Repository: knative/serving
Pull request #10720 (2021-02-09 01:35:46)

Optimize the execution path around logging
- pass the logger to the functions, no need to traverse the context and
  it's not used for anything else anyway.
- instrument the `adjustPercentage` function, since those are rare
  occasions, but they have a chance of being disruptive of cause bugs.

/assign @tcnghia 

knative-prow-robot: [APPROVALNOTIFIER] This PR is **APPROVED**

This pull-request has been approved by: *<a href="https://github.com/knative/serving/pull/10720#" title="Author self-approved">vagababov</a>*

The full list of commands accepted by this bot can be found [here](https://go.k8s.io/bot-commands?repo=knative%2Fserving).

The pull request process is described [here](https://git.k8s.io/community/contributors/guide/owners.md#the-code-review-process)

<details >
Needs approval from an approver in each of these files:

- ~~[pkg/reconciler/route/OWNERS](https://github.com/knative/serving/blob/master/pkg/reconciler/route/OWNERS)~~ [vagababov]

Approvers can indicate their approval by writing `/approve` in a comment
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</details>
<!-- META={"approvers":[]} -->
codecov[bot]: # [Codecov](https://codecov.io/gh/knative/serving/pull/10720?src=pr&el=h1) Report
> Merging [#10720](https://codecov.io/gh/knative/serving/pull/10720?src=pr&el=desc) (086b230) into [master](https://codecov.io/gh/knative/serving/commit/6449fb8ac027fa5a896ec0386825322d9c4a892d?el=desc) (6449fb8) will **increase** coverage by `0.00%`.
> The diff coverage is `100.00%`.

[![Impacted file tree graph](https://codecov.io/gh/knative/serving/pull/10720/graphs/tree.svg?width=650&height=150&src=pr&token=MPpDfAj4Ui)](https://codecov.io/gh/knative/serving/pull/10720?src=pr&el=tree)

```diff
@@           Coverage Diff           @@
##           master   #10720   +/-   ##
=======================================
  Coverage   88.16%   88.16%           
=======================================
  Files         186      186           
  Lines        8903     8907    +4     
=======================================
+ Hits         7849     7853    +4     
  Misses        814      814           
  Partials      240      240           
```


| [Impacted Files](https://codecov.io/gh/knative/serving/pull/10720?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [pkg/reconciler/route/traffic/rollout.go](https://codecov.io/gh/knative/serving/pull/10720/diff?src=pr&el=tree#diff-cGtnL3JlY29uY2lsZXIvcm91dGUvdHJhZmZpYy9yb2xsb3V0Lmdv) | `100.00% <100.00%> (ø)` | |
| [pkg/reconciler/autoscaling/kpa/scaler.go](https://codecov.io/gh/knative/serving/pull/10720/diff?src=pr&el=tree#diff-cGtnL3JlY29uY2lsZXIvYXV0b3NjYWxpbmcva3BhL3NjYWxlci5nbw==) | `88.73% <0.00%> (-1.41%)` | :arrow_down: |
| [pkg/reconciler/configuration/configuration.go](https://codecov.io/gh/knative/serving/pull/10720/diff?src=pr&el=tree#diff-cGtnL3JlY29uY2lsZXIvY29uZmlndXJhdGlvbi9jb25maWd1cmF0aW9uLmdv) | `88.28% <0.00%> (+1.56%)` | :arrow_up: |

------

[Continue to review full report at Codecov](https://codecov.io/gh/knative/serving/pull/10720?src=pr&el=continue).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/knative/serving/pull/10720?src=pr&el=footer). Last update [6449fb8...92594fa](https://codecov.io/gh/knative/serving/pull/10720?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).

vagababov: For #9766

Patch:
diff --git a/go.mod b/go.mod
index d1949c6cd..5a4b095c0 100644
--- a/go.mod
+++ b/go.mod
@@ -25,13 +25,13 @@ require (
 	github.com/gorilla/websocket v1.4.2
 	github.com/hashicorp/golang-lru v0.5.4
 	github.com/kelseyhightower/envconfig v1.4.0
-	github.com/prometheus/client_golang v1.8.0
+	github.com/prometheus/client_golang v1.9.0
 	github.com/prometheus/client_model v0.2.0
 	github.com/sirupsen/logrus v1.7.0 // indirect
 	github.com/tsenart/vegeta/v12 v12.8.4
-	go.opencensus.io v0.22.5
+	go.opencensus.io v0.22.6
 	go.uber.org/atomic v1.7.0
-	go.uber.org/automaxprocs v1.3.0
+	go.uber.org/automaxprocs v1.4.0
 	go.uber.org/goleak v1.1.10
 	go.uber.org/zap v1.16.0
 	golang.org/x/crypto v0.0.0-20201221181555-eec23a3978ad // indirect
@@ -43,7 +43,7 @@ require (
 	golang.org/x/tools v0.1.0 // indirect
 	gonum.org/v1/netlib v0.0.0-20190331212654-76723241ea4e // indirect
 	google.golang.org/api v0.36.0
-	google.golang.org/grpc v1.34.0
+	google.golang.org/grpc v1.35.0
 	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
 	k8s.io/api v0.19.7
 	k8s.io/apimachinery v0.19.7
@@ -54,7 +54,7 @@ require (
 	k8s.io/utils v0.0.0-20210111153108-fddb29f9d009 // indirect
 	knative.dev/caching v0.0.0-20210204170711-77321844ace3
 	knative.dev/hack v0.0.0-20210203173706-8368e1f6eacf
-	knative.dev/networking v0.0.0-20210208003533-45b7ed13aeaa
-	knative.dev/pkg v0.0.0-20210208131226-4b2ae073fa06
+	knative.dev/networking v0.0.0-20210208175252-ab1235ed8672
+	knative.dev/pkg v0.0.0-20210208175252-a02dcff9ee26
 	sigs.k8s.io/yaml v1.2.0
 )
diff --git a/go.sum b/go.sum
index 9015f9025..8f928841c 100644
--- a/go.sum
+++ b/go.sum
@@ -39,6 +39,8 @@ contrib.go.opencensus.io/exporter/prometheus v0.2.1-0.20200609204449-6bcf6f8577f
 contrib.go.opencensus.io/exporter/prometheus v0.2.1-0.20200609204449-6bcf6f8577f0/go.mod h1:MjHoxkI7Ny27toPeFkRbXbzVjzIGkwOAptrAy8Mxtm8=
 contrib.go.opencensus.io/exporter/stackdriver v0.13.4 h1:ksUxwH3OD5sxkjzEqGxNTl+Xjsmu3BnC/300MhSVTSc=
 contrib.go.opencensus.io/exporter/stackdriver v0.13.4/go.mod h1:aXENhDJ1Y4lIg4EUaVTwzvYETVNZk10Pu26tevFKLUc=
+contrib.go.opencensus.io/exporter/stackdriver v0.13.5 h1:TNaexHK16gPUoc7uzELKOU7JULqccn1NDuqUxmxSqfo=
+contrib.go.opencensus.io/exporter/stackdriver v0.13.5/go.mod h1:aXENhDJ1Y4lIg4EUaVTwzvYETVNZk10Pu26tevFKLUc=
 contrib.go.opencensus.io/exporter/zipkin v0.1.2 h1:YqE293IZrKtqPnpwDPH/lOqTWD/s3Iwabycam74JV3g=
 contrib.go.opencensus.io/exporter/zipkin v0.1.2/go.mod h1:mP5xM3rrgOjpn79MM8fZbj3gsxcuytSqtH0dxSWW1RE=
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
@@ -163,6 +165,7 @@ github.com/clbanning/x2j v0.0.0-20191024224557-825249438eec/go.mod h1:jMjuTZXRI4
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
 github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
 github.com/cncf/udpa/go v0.0.0-20200629203442-efcf912fb354/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
+github.com/cncf/udpa/go v0.0.0-20201120205902-5459f2c99403/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
 github.com/cockroachdb/datadriven v0.0.0-20190809214429-80d97fb3cbaa/go.mod h1:zn76sxSg3SzpJ0PPJaLDCu+Bu0Lg3sKTORVIj19EIF8=
 github.com/codahale/hdrhistogram v0.0.0-20161010025455-3a0bb77429bd/go.mod h1:sE/e/2PUdi/liOCUjSTXgM1o87ZssimdTWN964YiIeI=
 github.com/containerd/containerd v1.3.0/go.mod h1:bC6axHOhabU15QhwfG7w5PipXdVtMXFTttgp+kVtyUA=
@@ -224,6 +227,7 @@ github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymF
 github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
 github.com/envoyproxy/go-control-plane v0.9.7/go.mod h1:cwu0lG7PUMfa9snN8LXBig5ynNVH9qI8YYLbd1fK2po=
+github.com/envoyproxy/go-control-plane v0.9.9-0.20201210154907-fd9021fe5dad/go.mod h1:cXg6YxExXjJnVBQHBLXeUAgxn2UodCpnH306RInaBQk=
 github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
 github.com/evanphx/json-patch v4.5.0+incompatible/go.mod h1:50XU6AFN0ol/bzJsmQLiYLvXMP4fmwYFNcr97nuDLSk=
 github.com/evanphx/json-patch v4.9.0+incompatible h1:kLcOMZeuLAJvL2BPWLMIj5oaZQobrkAqrL+WFZwQses=
@@ -379,6 +383,7 @@ github.com/google/go-cmp v0.4.1/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
 github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.1/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/go-cmp v0.5.3/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.4 h1:L8R9j+yAqZuZjsqh/z+F1NCffTKKLShY6zXTItVIZ8M=
 github.com/google/go-cmp v0.5.4/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-containerregistry v0.4.1-0.20210128200529-19c2b639fab1 h1:o2ykCuuhHeUwtzNg89pH2hi+821aqjLWkaREVR3ziTQ=
@@ -413,6 +418,8 @@ github.com/google/uuid v1.0.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+
 github.com/google/uuid v1.1.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/google/uuid v1.1.2 h1:EVhdT+1Kseyi1/pUmXKaFxYsDNy9RQYkMWRH68J/W7Y=
 github.com/google/uuid v1.1.2/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/google/uuid v1.2.0 h1:qJYtXnJRWmpe7m/3XlyhrsLrEURqHRM2kxzoxXqyUDs=
+github.com/google/uuid v1.2.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/googleapis/gax-go/v2 v2.0.4/go.mod h1:0Wqv26UfaUD9n4G6kQubkQ+KchISgw+vpHVxEJEs9eg=
 github.com/googleapis/gax-go/v2 v2.0.5 h1:sjZBwGj9Jlw33ImPtvFviGYvseOtDM7hkSKB7+Tv3SM=
 github.com/googleapis/gax-go/v2 v2.0.5/go.mod h1:DWXyrwAJ9X0FpwwEdw+IPEYBICEFu5mhpdKc/us6bOk=
@@ -643,6 +650,8 @@ github.com/prometheus/client_golang v1.3.0/go.mod h1:hJaj2vgQTGQmVCsAACORcieXFeD
 github.com/prometheus/client_golang v1.7.1/go.mod h1:PY5Wy2awLA44sXw4AOSfFBetzPP4j5+D6mVACh+pe2M=
 github.com/prometheus/client_golang v1.8.0 h1:zvJNkoCFAnYFNC24FV8nW4JdRJ3GIFcLbg65lL/JDcw=
 github.com/prometheus/client_golang v1.8.0/go.mod h1:O9VU6huf47PktckDQfMTX0Y8tY0/7TSWwj+ITvv0TnM=
+github.com/prometheus/client_golang v1.9.0 h1:Rrch9mh17XcxvEu9D9DEpb4isxjGBtcevQjKvxPRQIU=
+github.com/prometheus/client_golang v1.9.0/go.mod h1:FqZLKOZnGdFAhOK4nqGHa7D66IdsO+O441Eve7ptJDU=
 github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910/go.mod h1:MbSGuTsp3dbXC40dX6PRTWyKYBIrTGTE9sqQNg2J8bo=
 github.com/prometheus/client_model v0.0.0-20190115171406-56726106282f/go.mod h1:MbSGuTsp3dbXC40dX6PRTWyKYBIrTGTE9sqQNg2J8bo=
 github.com/prometheus/client_model v0.0.0-20190129233127-fd36f4220a90/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
@@ -680,7 +689,7 @@ github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFR
 github.com/rogpeppe/go-internal v1.3.2/go.mod h1:xXDCJY+GAPziupqXw64V24skbSoqbTEfhy4qGm1nDQc=
 github.com/rogpeppe/go-internal v1.5.2 h1:qLvObTrvO/XRCqmkKxUlOBc48bI3efyDuAZe25QiF0w=
 github.com/rogpeppe/go-internal v1.5.2/go.mod h1:xXDCJY+GAPziupqXw64V24skbSoqbTEfhy4qGm1nDQc=
-github.com/rs/dnscache v0.0.0-20190621150935-06bb5526f76b/go.mod h1:qe5TWALJ8/a1Lqznoc5BDHpYX/8HU60Hm2AwRmqzxqA=
+github.com/rs/dnscache v0.0.0-20210201191234-295bba877686/go.mod h1:qe5TWALJ8/a1Lqznoc5BDHpYX/8HU60Hm2AwRmqzxqA=
 github.com/rubiojr/go-vhd v0.0.0-20200706105327-02e210299021/go.mod h1:DM5xW0nvfNNm2uytzsvhI3OnX8uzaRAg8UX/CnDqbto=
 github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
 github.com/ryanuber/columnize v0.0.0-20160712163229-9b3edd62028f/go.mod h1:sm1tb6uqfes/u+d4ooFouqFdy9/2g9QGwK3SQygK0Ts=
@@ -772,6 +781,8 @@ go.opencensus.io v0.22.4-0.20200608061201-1901b56b9515/go.mod h1:yxeiOL68Rb0Xd1d
 go.opencensus.io v0.22.4/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
 go.opencensus.io v0.22.5 h1:dntmOdLpSpHlVqbW5Eay97DelsZHe+55D+xC6i0dDS0=
 go.opencensus.io v0.22.5/go.mod h1:5pWMHQbX5EPX2/62yrJeAkowc+lfs/XD7Uxpq3pI6kk=
+go.opencensus.io v0.22.6 h1:BdkrbWrzDlV9dnbzoP7sfN+dHheJ4J9JOaYxcUDL+ok=
+go.opencensus.io v0.22.6/go.mod h1:XItmlyltB5F7CS4xOC1DcqMoFqwtC6OG2xF7mCv7P7E=
 go.uber.org/atomic v1.3.2/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
 go.uber.org/atomic v1.4.0/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
 go.uber.org/atomic v1.5.0/go.mod h1:sABNBOSYdrvTF6hTgEIbc7YasKWGhgEQZyfxyTvoXHQ=
@@ -780,6 +791,8 @@ go.uber.org/atomic v1.7.0 h1:ADUqmZGgLDDfbSL9ZmPxKTybcoEYHgpYfELNoN+7hsw=
 go.uber.org/atomic v1.7.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc=
 go.uber.org/automaxprocs v1.3.0 h1:II28aZoGdaglS5vVNnspf28lnZpXScxtIozx1lAjdb0=
 go.uber.org/automaxprocs v1.3.0/go.mod h1:9CWT6lKIep8U41DDaPiH6eFscnTyjfTANNQNx6LrIcA=
+go.uber.org/automaxprocs v1.4.0 h1:CpDZl6aOlLhReez+8S3eEotD7Jx0Os++lemPlMULQP0=
+go.uber.org/automaxprocs v1.4.0/go.mod h1:/mTEdr7LvHhs0v7mjdxDreTz1OG5zdZGqgOnhWiR/+Q=
 go.uber.org/goleak v1.1.10 h1:z+mqJhf6ss6BSfSM671tgKyZBFPTTJM+HLxnhPC3wu0=
 go.uber.org/goleak v1.1.10/go.mod h1:8a7PlsEVH3e/a/GLqe5IIrQx6GzcnRmZEufDUTk4A7A=
 go.uber.org/multierr v1.1.0/go.mod h1:wR5kodmAFQ0UK8QlbwjlSNy0Z68gJhDJUG5sjR94q/0=
@@ -976,6 +989,7 @@ golang.org/x/sys v0.0.0-20201112073958-5cba982894dd/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201201145000-ef89a241ccb3 h1:kzM6+9dur93BcC2kVlYl34cHU+TYZLanmpSJHVMmL64=
 golang.org/x/sys v0.0.0-20201201145000-ef89a241ccb3/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20201214210602-f9fddec55a1e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210119212857-b64e53b001e4 h1:myAQVi0cGEoqQVR5POX+8RR2mrocKqNN1hmeMqhX27k=
 golang.org/x/sys v0.0.0-20210119212857-b64e53b001e4/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c h1:VwygUrnw9jn88c4u8GD3rZQbqrP/tgas88tPUbBxQrk=
@@ -1071,6 +1085,7 @@ golang.org/x/tools v0.0.0-20201110124207-079ba7bd75cd/go.mod h1:emZCQorbCU4vsT4f
 golang.org/x/tools v0.0.0-20201201161351-ac6f37ff4c2a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/tools v0.0.0-20201211185031-d93e913c1a58 h1:1Bs6RVeBFtLZ8Yi1Hk07DiOqzvwLD/4hln4iahvFlag=
 golang.org/x/tools v0.0.0-20201211185031-d93e913c1a58/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
+golang.org/x/tools v0.0.0-20210105154028-b0ab187a4818/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/tools v0.0.0-20210106214847-113979e3529a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/tools v0.1.0 h1:po9/4sTYwZU9lPhi1tOrb4hCv3qrhiQ77LZfGa2OjwY=
 golang.org/x/tools v0.1.0/go.mod h1:xkSsbof2nBLbhDlRMhhhyNLN/zl3eTqcnHD5viDpcZ0=
@@ -1160,6 +1175,8 @@ google.golang.org/genproto v0.0.0-20201109203340-2640f1f9cdfb/go.mod h1:FWY/as6D
 google.golang.org/genproto v0.0.0-20201201144952-b05cb90ed32e/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20201211151036-40ec1c210f7a h1:GnJAhasbD8HiT8DZMvsEx3QLVy/X0icq/MGr0MqRJ2M=
 google.golang.org/genproto v0.0.0-20201211151036-40ec1c210f7a/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20201214200347-8c77b98c765d h1:HV9Z9qMhQEsdlvxNFELgQ11RkMzO3CMkjEySjCtuLes=
+google.golang.org/genproto v0.0.0-20201214200347-8c77b98c765d/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/grpc v1.17.0/go.mod h1:6QZJwpn2B+Zp71q/5VxRsJ6NXXVCE5NRUHRo+f3cWCs=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.20.0/go.mod h1:chYK+tFQF0nDUGJgXMSgLCQk3phJEuONr2DCgLDdAQM=
@@ -1181,6 +1198,8 @@ google.golang.org/grpc v1.31.1/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM
 google.golang.org/grpc v1.33.2/go.mod h1:JMHMWHQWaTccqQQlmk3MJZS+GWXOdAesneDmEnv2fbc=
 google.golang.org/grpc v1.34.0 h1:raiipEjMOIC/TO2AvyTxP25XFdLxNIBwzDh3FM3XztI=
 google.golang.org/grpc v1.34.0/go.mod h1:WotjhfgOW/POjDeRt8vscBtXq+2VjORFy659qA51WJ8=
+google.golang.org/grpc v1.35.0 h1:TwIQcH3es+MojMVojxxfQ3l3OF2KzlRxML2xZq0kRo8=
+google.golang.org/grpc v1.35.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
@@ -1297,12 +1316,12 @@ knative.dev/hack v0.0.0-20210120165453-8d623a0af457 h1:jEBITgx/lQydGncM0uetpv/Zq
 knative.dev/hack v0.0.0-20210120165453-8d623a0af457/go.mod h1:PHt8x8yX5Z9pPquBEfIj0X66f8iWkWfR0S/sarACJrI=
 knative.dev/hack v0.0.0-20210203173706-8368e1f6eacf h1:u4cY4jr2LYvhoz/1HBWEPsMiLkm0HMdDTfmmw1RE8zE=
 knative.dev/hack v0.0.0-20210203173706-8368e1f6eacf/go.mod h1:PHt8x8yX5Z9pPquBEfIj0X66f8iWkWfR0S/sarACJrI=
-knative.dev/networking v0.0.0-20210208003533-45b7ed13aeaa h1:618cv8suiExQsAkFIgZNf6vfSqpGHI0y09aGokNWEzA=
-knative.dev/networking v0.0.0-20210208003533-45b7ed13aeaa/go.mod h1:Dl70Ul8xiCleoXGA2unSbfDvJN2oUfZXqVYsE6zl/rM=
+knative.dev/networking v0.0.0-20210208175252-ab1235ed8672 h1:4+tS4k0279XQwRky2XPp5ELhZbvskXBazEtl1VvLgkw=
+knative.dev/networking v0.0.0-20210208175252-ab1235ed8672/go.mod h1:XC1mKUyd7t+UKJ7coKbGqEF0XDtEv+90KiG0Vo7TBtk=
 knative.dev/pkg v0.0.0-20210203171706-6045ed499615 h1:Ee0n+axzrQXWkJfGl91B5RRmB25R1plTfC7MDw3NxUU=
 knative.dev/pkg v0.0.0-20210203171706-6045ed499615/go.mod h1:X4NPrCo8NK3hbDVan9Vm7mf5io3ZoINakAdrpSXVB08=
-knative.dev/pkg v0.0.0-20210208131226-4b2ae073fa06 h1:u2mHDtIEB2WkXXgCj5yg2VuNP/W0XNRliaOJqJGrLeM=
-knative.dev/pkg v0.0.0-20210208131226-4b2ae073fa06/go.mod h1:72bhCSsMqNteAB/T7gZN6w/bnMz+GwGE92+RUmhjzF8=
+knative.dev/pkg v0.0.0-20210208175252-a02dcff9ee26 h1:PkJB1M77wYBI1UF5vp8y4fRnYQDu1IkRWswp6CgRRSo=
+knative.dev/pkg v0.0.0-20210208175252-a02dcff9ee26/go.mod h1:TJSdebQOWX5N2bszohOYVi0H1QtXbtlYLuMghAFBMhY=
 modernc.org/cc v1.0.0/go.mod h1:1Sk4//wdnYJiUIxnW8ddKpaOJCF37yAdqYnkxUpaYxw=
 modernc.org/golex v1.0.0/go.mod h1:b/QX9oBD/LhixY6NDh+IdGv17hgB+51fET1i2kPSmvk=
 modernc.org/mathutil v1.0.0/go.mod h1:wU0vUrJsVWBZ4P6e7xtFJEhFSNsfRLJ8H458uRjg03k=
diff --git a/pkg/reconciler/route/traffic/rollout.go b/pkg/reconciler/route/traffic/rollout.go
index a275241a3..3a19a2ae6 100644
--- a/pkg/reconciler/route/traffic/rollout.go
+++ b/pkg/reconciler/route/traffic/rollout.go
@@ -27,6 +27,7 @@ import (
 	"sort"
 	"time"
 
+	"go.uber.org/zap"
 	"knative.dev/pkg/logging"
 )
 
@@ -226,7 +227,7 @@ func (cur *Rollout) Step(ctx context.Context, prev *Rollout, nowTS int64) (*Roll
 				// altogether.
 				switch p := ccfgs[i].Percent; {
 				case p > 1:
-					sc := stepConfig(ctx, ccfgs[i], pcfgs[j], nowTS)
+					sc := stepConfig(ccfgs[i], pcfgs[j], nowTS, logger)
 					ret = append(ret, sc)
 					// Keep the minimum value if it is not 0.
 					if nst := sc.StepParams.NextStepTime; nst > 0 && nst < returnTS {
@@ -270,14 +271,21 @@ func (cur *Rollout) Step(ctx context.Context, prev *Rollout, nowTS int64) (*Roll
 // If new percentage is larger than the previous, the last revision gets
 // the difference, if it is decreasing then we start removing traffic from
 // the older revisions.
-func adjustPercentage(goal int, cr *ConfigurationRollout) {
+func adjustPercentage(goal int, cr *ConfigurationRollout, logger *zap.SugaredLogger) {
+	// Usually changing traffic target %, especially during rollout is a rare
+	// occurrence, so log all 3 meaningful cases.
 	switch diff := goal - cr.Percent; {
 	case goal == 0:
+		logger.Infof("Traffic for config %s got assigned 0%%", cr.ConfigurationName)
 		cr.Revisions = nil // No traffic, no rollout.
 	case diff > 0:
+		logger.Infof("Traffic for config %s increased by %d%%, assigning the difference to the latest revision",
+			cr.ConfigurationName)
 		cr.Revisions[len(cr.Revisions)-1].Percent += diff
 	case diff < 0:
 		diff = -diff // To make logic more natural.
+		logger.Infof("Traffic for config %s decreased by %d%%, removing the difference from the oldest revision(s)",
+			cr.ConfigurationName)
 		i := 0
 		for diff > 0 && i < len(cr.Revisions) {
 			if cr.Revisions[i].Percent > diff {
@@ -287,9 +295,10 @@ func adjustPercentage(goal int, cr *ConfigurationRollout) {
 			diff -= cr.Revisions[i].Percent
 			i++
 		}
+		// Remove the revisions that got cut to 0%.
 		cr.Revisions = cr.Revisions[i:]
 	default: // diff = 0
-		// noop
+		// noop; no log; this is the normal operation.
 	}
 }
 
@@ -353,8 +362,7 @@ func stepRevisions(goal *ConfigurationRollout, nowTS int64) {
 
 // stepConfig takes previous and goal configuration shapes and returns a new
 // config rollout, after computing the percetage allocations.
-func stepConfig(ctx context.Context, goal, prev *ConfigurationRollout, nowTS int64) *ConfigurationRollout {
-	logger := logging.FromContext(ctx)
+func stepConfig(goal, prev *ConfigurationRollout, nowTS int64, logger *zap.SugaredLogger) *ConfigurationRollout {
 	pc := len(prev.Revisions)
 	ret := &ConfigurationRollout{
 		ConfigurationName: goal.ConfigurationName,
@@ -367,7 +375,7 @@ func stepConfig(ctx context.Context, goal, prev *ConfigurationRollout, nowTS int
 	}
 
 	if len(prev.Revisions) > 0 {
-		adjustPercentage(goal.Percent, prev)
+		adjustPercentage(goal.Percent, prev, logger)
 	}
 	// goal will always have just one revision in the list – the current desired revision.
 	// If it matches the last revision of the previous rollout state (or there were no revisions)
diff --git a/vendor/contrib.go.opencensus.io/exporter/stackdriver/resource.go b/vendor/contrib.go.opencensus.io/exporter/stackdriver/resource.go
index e32c4dab7..50331d294 100644
--- a/vendor/contrib.go.opencensus.io/exporter/stackdriver/resource.go
+++ b/vendor/contrib.go.opencensus.io/exporter/stackdriver/resource.go
@@ -41,6 +41,11 @@ const (
 	knativeConfigurationName = "configuration_name"
 	knativeNamespaceName     = "namespace_name"
 
+	knativeBrokerType  = "knative_broker"
+	knativeBrokerName  = "broker_name"
+	knativeTriggerType = "knative_trigger"
+	knativeTriggerName = "trigger_name"
+
 	appEngineInstanceType = "gae_instance"
 
 	appEngineService  = "appengine.service.id"
@@ -133,6 +138,23 @@ var knativeRevisionResourceMap = map[string]string{
 	knativeNamespaceName:     knativeNamespaceName,
 }
 
+var knativeBrokerResourceMap = map[string]string{
+	"project_id":         stackdriverProjectID,
+	"location":           resourcekeys.CloudKeyZone,
+	"cluster_name":       resourcekeys.K8SKeyClusterName,
+	knativeNamespaceName: knativeNamespaceName,
+	knativeBrokerName:    knativeBrokerName,
+}
+
+var knativeTriggerResourceMap = map[string]string{
+	"project_id":         stackdriverProjectID,
+	"location":           resourcekeys.CloudKeyZone,
+	"cluster_name":       resourcekeys.K8SKeyClusterName,
+	knativeNamespaceName: knativeNamespaceName,
+	knativeBrokerName:    knativeBrokerName,
+	knativeTriggerName:   knativeTriggerName,
+}
+
 // getAutodetectedLabels returns all the labels from the Monitored Resource detected
 // from the environment by calling monitoredresource.Autodetect. If a "zone" label is detected,
 // a "location" label is added with the same value to account for differences between
@@ -213,6 +235,12 @@ func DefaultMapResource(res *resource.Resource) *monitoredrespb.MonitoredResourc
 	case res.Type == knativeResType:
 		result.Type = res.Type
 		match = knativeRevisionResourceMap
+	case res.Type == knativeBrokerType:
+		result.Type = knativeBrokerType
+		match = knativeBrokerResourceMap
+	case res.Type == knativeTriggerType:
+		result.Type = knativeTriggerType
+		match = knativeTriggerResourceMap
 	}
 
 	var missing bool
diff --git a/vendor/contrib.go.opencensus.io/exporter/stackdriver/stackdriver.go b/vendor/contrib.go.opencensus.io/exporter/stackdriver/stackdriver.go
index 1e253f9dd..1f838ba33 100644
--- a/vendor/contrib.go.opencensus.io/exporter/stackdriver/stackdriver.go
+++ b/vendor/contrib.go.opencensus.io/exporter/stackdriver/stackdriver.go
@@ -67,6 +67,7 @@ import (
 	"go.opencensus.io/trace"
 	"golang.org/x/oauth2/google"
 	"google.golang.org/api/option"
+	metricpb "google.golang.org/genproto/googleapis/api/metric"
 	monitoredrespb "google.golang.org/genproto/googleapis/api/monitoredres"
 
 	commonpb "github.com/census-instrumentation/opencensus-proto/gen-go/agent/common/v1"
@@ -469,6 +470,15 @@ func (e *Exporter) Flush() {
 	e.traceExporter.Flush()
 }
 
+// ViewToMetricDescriptor converts an OpenCensus view to a MetricDescriptor.
+//
+// This is useful for cases when you want to use your Go code as source of
+// truth of metric descriptors. You can extract or define views in a central
+// place, then call this method to generate MetricDescriptors.
+func (e *Exporter) ViewToMetricDescriptor(ctx context.Context, v *view.View) (*metricpb.MetricDescriptor, error) {
+	return e.statsExporter.viewToMetricDescriptor(ctx, v)
+}
+
 func (o Options) handleError(err error) {
 	if o.OnError != nil {
 		o.OnError(err)
diff --git a/vendor/github.com/google/uuid/hash.go b/vendor/github.com/google/uuid/hash.go
index b17461631..b404f4bec 100644
--- a/vendor/github.com/google/uuid/hash.go
+++ b/vendor/github.com/google/uuid/hash.go
@@ -26,8 +26,8 @@ var (
 // NewMD5 and NewSHA1.
 func NewHash(h hash.Hash, space UUID, data []byte, version int) UUID {
 	h.Reset()
-	h.Write(space[:])
-	h.Write(data)
+	h.Write(space[:]) //nolint:errcheck
+	h.Write(data)     //nolint:errcheck
 	s := h.Sum(nil)
 	var uuid UUID
 	copy(uuid[:], s)
diff --git a/vendor/github.com/google/uuid/sql.go b/vendor/github.com/google/uuid/sql.go
index f326b54db..2e02ec06c 100644
--- a/vendor/github.com/google/uuid/sql.go
+++ b/vendor/github.com/google/uuid/sql.go
@@ -9,7 +9,7 @@ import (
 	"fmt"
 )
 
-// Scan implements sql.Scanner so UUIDs can be read from databases transparently
+// Scan implements sql.Scanner so UUIDs can be read from databases transparently.
 // Currently, database types that map to string and []byte are supported. Please
 // consult database-specific driver documentation for matching types.
 func (uuid *UUID) Scan(src interface{}) error {
diff --git a/vendor/github.com/google/uuid/uuid.go b/vendor/github.com/google/uuid/uuid.go
index 524404cc5..60d26bb50 100644
--- a/vendor/github.com/google/uuid/uuid.go
+++ b/vendor/github.com/google/uuid/uuid.go
@@ -35,6 +35,12 @@ const (
 
 var rander = rand.Reader // random function
 
+type invalidLengthError struct{ len int }
+
+func (err invalidLengthError) Error() string {
+	return fmt.Sprintf("invalid UUID length: %d", err.len)
+}
+
 // Parse decodes s into a UUID or returns an error.  Both the standard UUID
 // forms of xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx and
 // urn:uuid:xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx are decoded as well as the
@@ -68,7 +74,7 @@ func Parse(s string) (UUID, error) {
 		}
 		return uuid, nil
 	default:
-		return uuid, fmt.Errorf("invalid UUID length: %d", len(s))
+		return uuid, invalidLengthError{len(s)}
 	}
 	// s is now at least 36 bytes long
 	// it must be of the form  xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
@@ -112,7 +118,7 @@ func ParseBytes(b []byte) (UUID, error) {
 		}
 		return uuid, nil
 	default:
-		return uuid, fmt.Errorf("invalid UUID length: %d", len(b))
+		return uuid, invalidLengthError{len(b)}
 	}
 	// s is now at least 36 bytes long
 	// it must be of the form  xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
diff --git a/vendor/github.com/google/uuid/version4.go b/vendor/github.com/google/uuid/version4.go
index c110465db..86160fbd0 100644
--- a/vendor/github.com/google/uuid/version4.go
+++ b/vendor/github.com/google/uuid/version4.go
@@ -14,6 +14,14 @@ func New() UUID {
 	return Must(NewRandom())
 }
 
+// NewString creates a new random UUID and returns it as a string or panics.
+// NewString is equivalent to the expression
+//
+//    uuid.New().String()
+func NewString() string {
+	return Must(NewRandom()).String()
+}
+
 // NewRandom returns a Random (Version 4) UUID.
 //
 // The strength of the UUIDs is based on the strength of the crypto/rand
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/process_collector.go b/vendor/github.com/prometheus/client_golang/prometheus/process_collector.go
index 9b8097942..c46702d60 100644
--- a/vendor/github.com/prometheus/client_golang/prometheus/process_collector.go
+++ b/vendor/github.com/prometheus/client_golang/prometheus/process_collector.go
@@ -15,7 +15,11 @@ package prometheus
 
 import (
 	"errors"
+	"fmt"
+	"io/ioutil"
 	"os"
+	"strconv"
+	"strings"
 )
 
 type processCollector struct {
@@ -149,3 +153,20 @@ func (c *processCollector) reportError(ch chan<- Metric, desc *Desc, err error)
 	}
 	ch <- NewInvalidMetric(desc, err)
 }
+
+// NewPidFileFn returns a function that retrieves a pid from the specified file.
+// It is meant to be used for the PidFn field in ProcessCollectorOpts.
+func NewPidFileFn(pidFilePath string) func() (int, error) {
+	return func() (int, error) {
+		content, err := ioutil.ReadFile(pidFilePath)
+		if err != nil {
+			return 0, fmt.Errorf("can't read pid file %q: %+v", pidFilePath, err)
+		}
+		pid, err := strconv.Atoi(strings.TrimSpace(string(content)))
+		if err != nil {
+			return 0, fmt.Errorf("can't parse pid file %q: %+v", pidFilePath, err)
+		}
+
+		return pid, nil
+	}
+}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/http.go b/vendor/github.com/prometheus/client_golang/prometheus/promhttp/http.go
index 5e1c4546c..d86d0cf4b 100644
--- a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/http.go
+++ b/vendor/github.com/prometheus/client_golang/prometheus/promhttp/http.go
@@ -99,7 +99,7 @@ func HandlerFor(reg prometheus.Gatherer, opts HandlerOpts) http.Handler {
 		inFlightSem = make(chan struct{}, opts.MaxRequestsInFlight)
 	}
 	if opts.Registry != nil {
-		// Initialize all possibilites that can occur below.
+		// Initialize all possibilities that can occur below.
 		errCnt.WithLabelValues("gathering")
 		errCnt.WithLabelValues("encoding")
 		if err := opts.Registry.Register(errCnt); err != nil {
@@ -303,8 +303,12 @@ type Logger interface {
 // HandlerOpts specifies options how to serve metrics via an http.Handler. The
 // zero value of HandlerOpts is a reasonable default.
 type HandlerOpts struct {
-	// ErrorLog specifies an optional logger for errors collecting and
-	// serving metrics. If nil, errors are not logged at all.
+	// ErrorLog specifies an optional Logger for errors collecting and
+	// serving metrics. If nil, errors are not logged at all. Note that the
+	// type of a reported error is often prometheus.MultiError, which
+	// formats into a multi-line error string. If you want to avoid the
+	// latter, create a Logger implementation that detects a
+	// prometheus.MultiError and formats the contained errors into one line.
 	ErrorLog Logger
 	// ErrorHandling defines how errors are handled. Note that errors are
 	// logged regardless of the configured ErrorHandling provided ErrorLog
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/instrument_server.go b/vendor/github.com/prometheus/client_golang/prometheus/promhttp/instrument_server.go
index 9db243805..ab037db86 100644
--- a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/instrument_server.go
+++ b/vendor/github.com/prometheus/client_golang/prometheus/promhttp/instrument_server.go
@@ -43,14 +43,14 @@ func InstrumentHandlerInFlight(g prometheus.Gauge, next http.Handler) http.Handl
 
 // InstrumentHandlerDuration is a middleware that wraps the provided
 // http.Handler to observe the request duration with the provided ObserverVec.
-// The ObserverVec must have zero, one, or two non-const non-curried labels. For
-// those, the only allowed label names are "code" and "method". The function
-// panics otherwise. The Observe method of the Observer in the ObserverVec is
-// called with the request duration in seconds. Partitioning happens by HTTP
-// status code and/or HTTP method if the respective instance label names are
-// present in the ObserverVec. For unpartitioned observations, use an
-// ObserverVec with zero labels. Note that partitioning of Histograms is
-// expensive and should be used judiciously.
+// The ObserverVec must have valid metric and label names and must have zero,
+// one, or two non-const non-curried labels. For those, the only allowed label
+// names are "code" and "method". The function panics otherwise. The Observe
+// method of the Observer in the ObserverVec is called with the request duration
+// in seconds. Partitioning happens by HTTP status code and/or HTTP method if
+// the respective instance label names are present in the ObserverVec. For
+// unpartitioned observations, use an ObserverVec with zero labels. Note that
+// partitioning of Histograms is expensive and should be used judiciously.
 //
 // If the wrapped Handler does not set a status code, a status code of 200 is assumed.
 //
@@ -79,12 +79,13 @@ func InstrumentHandlerDuration(obs prometheus.ObserverVec, next http.Handler) ht
 }
 
 // InstrumentHandlerCounter is a middleware that wraps the provided http.Handler
-// to observe the request result with the provided CounterVec.  The CounterVec
-// must have zero, one, or two non-const non-curried labels. For those, the only
-// allowed label names are "code" and "method". The function panics
-// otherwise. Partitioning of the CounterVec happens by HTTP status code and/or
-// HTTP method if the respective instance label names are present in the
-// CounterVec. For unpartitioned counting, use a CounterVec with zero labels.
+// to observe the request result with the provided CounterVec. The CounterVec
+// must have valid metric and label names and must have zero, one, or two
+// non-const non-curried labels. For those, the only allowed label names are
+// "code" and "method". The function panics otherwise. Partitioning of the
+// CounterVec happens by HTTP status code and/or HTTP method if the respective
+// instance label names are present in the CounterVec. For unpartitioned
+// counting, use a CounterVec with zero labels.
 //
 // If the wrapped Handler does not set a status code, a status code of 200 is assumed.
 //
@@ -110,14 +111,15 @@ func InstrumentHandlerCounter(counter *prometheus.CounterVec, next http.Handler)
 
 // InstrumentHandlerTimeToWriteHeader is a middleware that wraps the provided
 // http.Handler to observe with the provided ObserverVec the request duration
-// until the response headers are written. The ObserverVec must have zero, one,
-// or two non-const non-curried labels. For those, the only allowed label names
-// are "code" and "method". The function panics otherwise. The Observe method of
-// the Observer in the ObserverVec is called with the request duration in
-// seconds. Partitioning happens by HTTP status code and/or HTTP method if the
-// respective instance label names are present in the ObserverVec. For
-// unpartitioned observations, use an ObserverVec with zero labels. Note that
-// partitioning of Histograms is expensive and should be used judiciously.
+// until the response headers are written. The ObserverVec must have valid
+// metric and label names and must have zero, one, or two non-const non-curried
+// labels. For those, the only allowed label names are "code" and "method". The
+// function panics otherwise. The Observe method of the Observer in the
+// ObserverVec is called with the request duration in seconds. Partitioning
+// happens by HTTP status code and/or HTTP method if the respective instance
+// label names are present in the ObserverVec. For unpartitioned observations,
+// use an ObserverVec with zero labels. Note that partitioning of Histograms is
+// expensive and should be used judiciously.
 //
 // If the wrapped Handler panics before calling WriteHeader, no value is
 // reported.
@@ -139,15 +141,15 @@ func InstrumentHandlerTimeToWriteHeader(obs prometheus.ObserverVec, next http.Ha
 }
 
 // InstrumentHandlerRequestSize is a middleware that wraps the provided
-// http.Handler to observe the request size with the provided ObserverVec.  The
-// ObserverVec must have zero, one, or two non-const non-curried labels. For
-// those, the only allowed label names are "code" and "method". The function
-// panics otherwise. The Observe method of the Observer in the ObserverVec is
-// called with the request size in bytes. Partitioning happens by HTTP status
-// code and/or HTTP method if the respective instance label names are present in
-// the ObserverVec. For unpartitioned observations, use an ObserverVec with zero
-// labels. Note that partitioning of Histograms is expensive and should be used
-// judiciously.
+// http.Handler to observe the request size with the provided ObserverVec. The
+// ObserverVec must have valid metric and label names and must have zero, one,
+// or two non-const non-curried labels. For those, the only allowed label names
+// are "code" and "method". The function panics otherwise. The Observe method of
+// the Observer in the ObserverVec is called with the request size in
+// bytes. Partitioning happens by HTTP status code and/or HTTP method if the
+// respective instance label names are present in the ObserverVec. For
+// unpartitioned observations, use an ObserverVec with zero labels. Note that
+// partitioning of Histograms is expensive and should be used judiciously.
 //
 // If the wrapped Handler does not set a status code, a status code of 200 is assumed.
 //
@@ -174,15 +176,15 @@ func InstrumentHandlerRequestSize(obs prometheus.ObserverVec, next http.Handler)
 }
 
 // InstrumentHandlerResponseSize is a middleware that wraps the provided
-// http.Handler to observe the response size with the provided ObserverVec.  The
-// ObserverVec must have zero, one, or two non-const non-curried labels. For
-// those, the only allowed label names are "code" and "method". The function
-// panics otherwise. The Observe method of the Observer in the ObserverVec is
-// called with the response size in bytes. Partitioning happens by HTTP status
-// code and/or HTTP method if the respective instance label names are present in
-// the ObserverVec. For unpartitioned observations, use an ObserverVec with zero
-// labels. Note that partitioning of Histograms is expensive and should be used
-// judiciously.
+// http.Handler to observe the response size with the provided ObserverVec. The
+// ObserverVec must have valid metric and label names and must have zero, one,
+// or two non-const non-curried labels. For those, the only allowed label names
+// are "code" and "method". The function panics otherwise. The Observe method of
+// the Observer in the ObserverVec is called with the response size in
+// bytes. Partitioning happens by HTTP status code and/or HTTP method if the
+// respective instance label names are present in the ObserverVec. For
+// unpartitioned observations, use an ObserverVec with zero labels. Note that
+// partitioning of Histograms is expensive and should be used judiciously.
 //
 // If the wrapped Handler does not set a status code, a status code of 200 is assumed.
 //
@@ -198,6 +200,11 @@ func InstrumentHandlerResponseSize(obs prometheus.ObserverVec, next http.Handler
 	})
 }
 
+// checkLabels returns whether the provided Collector has a non-const,
+// non-curried label named "code" and/or "method". It panics if the provided
+// Collector does not have a Desc or has more than one Desc or its Desc is
+// invalid. It also panics if the Collector has any non-const, non-curried
+// labels that are not named "code" or "method".
 func checkLabels(c prometheus.Collector) (code bool, method bool) {
 	// TODO(beorn7): Remove this hacky way to check for instance labels
 	// once Descriptors can have their dimensionality queried.
@@ -225,6 +232,10 @@ func checkLabels(c prometheus.Collector) (code bool, method bool) {
 
 	close(descc)
 
+	// Make sure the Collector has a valid Desc by registering it with a
+	// temporary registry.
+	prometheus.NewRegistry().MustRegister(c)
+
 	// Create a ConstMetric with the Desc. Since we don't know how many
 	// variable labels there are, try for as long as it needs.
 	for err := errors.New("dummy"); err != nil; lvs = append(lvs, magicString) {
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/registry.go b/vendor/github.com/prometheus/client_golang/prometheus/registry.go
index ba94405af..48f5ef9d7 100644
--- a/vendor/github.com/prometheus/client_golang/prometheus/registry.go
+++ b/vendor/github.com/prometheus/client_golang/prometheus/registry.go
@@ -215,6 +215,8 @@ func (err AlreadyRegisteredError) Error() string {
 // by a Gatherer to report multiple errors during MetricFamily gathering.
 type MultiError []error
 
+// Error formats the contained errors as a bullet point list, preceded by the
+// total number of errors. Note that this results in a multi-line string.
 func (errs MultiError) Error() string {
 	if len(errs) == 0 {
 		return ""
diff --git a/vendor/go.opencensus.io/.travis.yml b/vendor/go.opencensus.io/.travis.yml
deleted file mode 100644
index bd6b66ee8..000000000
--- a/vendor/go.opencensus.io/.travis.yml
+++ /dev/null
@@ -1,17 +0,0 @@
-language: go
-
-go_import_path: go.opencensus.io
-
-go:
-  - 1.11.x
-
-env:
-  global:
-    GO111MODULE=on
-
-before_script:
-  - make install-tools
-
-script:
-  - make travis-ci
-  - go run internal/check/version.go # TODO move this to makefile
diff --git a/vendor/go.opencensus.io/go.mod b/vendor/go.opencensus.io/go.mod
index 297071562..95b2522a7 100644
--- a/vendor/go.opencensus.io/go.mod
+++ b/vendor/go.opencensus.io/go.mod
@@ -1,15 +1,12 @@
 module go.opencensus.io
 
 require (
-	github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6
-	github.com/golang/protobuf v1.3.1
-	github.com/google/go-cmp v0.3.0
-	github.com/stretchr/testify v1.4.0
-	golang.org/x/net v0.0.0-20190620200207-3b0461eec859
-	golang.org/x/sys v0.0.0-20190502145724-3ef323f4f1fd // indirect
-	golang.org/x/text v0.3.3 // indirect
-	google.golang.org/genproto v0.0.0-20190425155659-357c62f0e4bb // indirect
-	google.golang.org/grpc v1.20.1
+	github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e
+	github.com/golang/protobuf v1.4.3
+	github.com/google/go-cmp v0.5.3
+	github.com/stretchr/testify v1.6.1
+	golang.org/x/net v0.0.0-20201110031124-69a78807bb2b
+	google.golang.org/grpc v1.33.2
 )
 
 go 1.13
diff --git a/vendor/go.opencensus.io/go.sum b/vendor/go.opencensus.io/go.sum
index 01c02972c..c97cd1b55 100644
--- a/vendor/go.opencensus.io/go.sum
+++ b/vendor/go.opencensus.io/go.sum
@@ -1,25 +1,47 @@
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
+github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
 github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
+github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
+github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
+github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b h1:VKtxabqXZkF25pY9ekfRL6a582T4P37/31XEstQ5p58=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
-github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6 h1:ZgQEtGgCBiWRM39fZuwSd1LwSqqSW0hOdXCYYDX0R3I=
-github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
+github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e h1:1r7pUrabqp18hOBcwBwiTsbnFeTZHV9eER/QT5JVZxY=
+github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
 github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
 github.com/golang/protobuf v1.2.0 h1:P3YflyNX/ehuJFLhxviNdFxQPkGK5cDcApsge1SqnvM=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
-github.com/golang/protobuf v1.3.1 h1:YF8+flBXS5eO826T4nzqPrxfhQThhXl0YzfuUPu4SBg=
-github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/golang/protobuf v1.4.0-rc.1/go.mod h1:ceaxUfeHdC40wWswd/P6IGgMaK3YpKi5j83Wpe3EHw8=
+github.com/golang/protobuf v1.4.0-rc.1.0.20200221234624-67d41d38c208/go.mod h1:xKAWHe0F5eneWXFV3EuXVDTCmh+JuBKY0li0aMyXATA=
+github.com/golang/protobuf v1.4.0-rc.2/go.mod h1:LlEzMj4AhA7rCAGe4KMBDvJI+AwstrUpVNzEA03Pprs=
+github.com/golang/protobuf v1.4.0-rc.4.0.20200313231945-b860323f09d0/go.mod h1:WU3c8KckQ9AFe+yFwt9sWVRKCVIyN9cPHBJSNnbL67w=
+github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvqG2KuDX0=
+github.com/golang/protobuf v1.4.1/go.mod h1:U8fpvMrcmy5pZrNK1lt4xCsGvpyWQ/VVv6QDs8UjoX8=
+github.com/golang/protobuf v1.4.3 h1:JjCZWpVbqXDqFVmTfYWEVTMIYrL/NPdPSCHPJ0T/raM=
+github.com/golang/protobuf v1.4.3/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
+github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
 github.com/google/go-cmp v0.3.0 h1:crn/baboCvb5fXaQ0IJ1SGTsTVrWpDsCWC8EGETZijY=
 github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
+github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
+github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/go-cmp v0.5.3 h1:x95R7cp+rSeeqAMI2knLtQ0DKlaBhv2NrtrOvafPHRo=
+github.com/google/go-cmp v0.5.3/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/uuid v1.1.2/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
-github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
+github.com/stretchr/testify v1.6.1 h1:hDPOHmpOpP40lSULcqw7IrRb/u7w6RpDC9399XyoNd0=
+github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
 golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU=
@@ -30,24 +52,25 @@ golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73r
 golang.org/x/net v0.0.0-20190213061140-3a22650c66bd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190311183353-d8887717615a h1:oWX7TPOiFAMXLq8o0ikBYfCJVlRHBcsciT5bXOrH628=
 golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
-golang.org/x/net v0.0.0-20190620200207-3b0461eec859 h1:R/3boaszxrf1GEUWTVDzSKVwLmSJpwZ1yqXm8j0v2QI=
-golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/net v0.0.0-20201110031124-69a78807bb2b h1:uwuIcX0g4Yl1NC5XAz37xsr2lTtcqevgzYNVt49waME=
+golang.org/x/net v0.0.0-20201110031124-69a78807bb2b/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f h1:wMNYb4v58l5UBM7MYRLPG6ZhfOqbKu7X5eyFl8ZhKvA=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f h1:Bl/8QSvNqXvPGPGXa2z5xUTmV7VDcZyvRZ+QQXkXTZQ=
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20190227155943-e225da77a7e6 h1:bjcUS9ztw9kFmmIxJInhon/0Is3p+EHBKNgquIzo1OI=
-golang.org/x/sync v0.0.0-20190227155943-e225da77a7e6/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a h1:1BGLXjeY4akVXGgbC9HugT3Jv3hCI0z56oJR5vAMgBU=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20190502145724-3ef323f4f1fd h1:r7DufRZuZbWB7j439YfAzP8RPDa9unLkpwQKUYbIMPI=
-golang.org/x/sys v0.0.0-20190502145724-3ef323f4f1fd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f h1:+Nyd8tzPX9R7BWHguqsrbFdRx3WQ/1ib8I44HXV5yTA=
+golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/text v0.3.2 h1:tW2bmiBqwgJj/UpqtC8EpXEZVYOwU0yG4iWbprSVAcs=
-golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
+golang.org/x/text v0.3.3 h1:cokOdA+Jmi5PJGXLlLllQSgYigAEfHXJAERHVMaCc2k=
+golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
@@ -55,20 +78,39 @@ golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3
 golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
 golang.org/x/tools v0.0.0-20190311212946-11955173bddd h1:/e+gpKk9r3dJobndpTytxS2gOy6m5uvpg+ISQoEcusQ=
 golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
+golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
 google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
 google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8 h1:Nw54tB0rB7hY/N0NQvRW8DG4Yk3Q6T9cu9RcFQDu1tc=
 google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
-google.golang.org/genproto v0.0.0-20190425155659-357c62f0e4bb h1:i1Ppqkc3WQXikh8bXiwHqAN5Rv3/qDCcRk0/Otx73BY=
-google.golang.org/genproto v0.0.0-20190425155659-357c62f0e4bb/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
+google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
+google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013 h1:+kGHl1aib/qcwaRi1CbqBZ1rk19r85MNUf8HaBghugY=
+google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo=
 google.golang.org/grpc v1.19.0 h1:cfg4PD8YEdSFnm7qLV4++93WcmhH2nIUhMjhdCvl3j8=
 google.golang.org/grpc v1.19.0 h1:cfg4PD8YEdSFnm7qLV4++93WcmhH2nIUhMjhdCvl3j8=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
-google.golang.org/grpc v1.20.1 h1:Hz2g2wirWK7H0qIIhGIqRGTuMwTE8HEKFnDZZ7lm9NU=
-google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
+google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
+google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY=
+google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
+google.golang.org/grpc v1.33.2 h1:EQyQC3sa8M+p6Ulc8yy9SWSS2GVwyRc83gAbG8lrl4o=
+google.golang.org/grpc v1.33.2/go.mod h1:JMHMWHQWaTccqQQlmk3MJZS+GWXOdAesneDmEnv2fbc=
+google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
+google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
+google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
+google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miEFZTKqfCUM6K7xSMQL9OKL/b6hQv+e19PK+JZNE=
+google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
+google.golang.org/protobuf v1.22.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
+google.golang.org/protobuf v1.23.0 h1:4MY060fB1DLGMB/7MBTLnwQUY6+F09GEiz6SsrNqyzM=
+google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
+google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
+google.golang.org/protobuf v1.25.0 h1:Ejskq+SyPohKW+1uil0JJMtmHCgJPJ/qWTxr8qp+R4c=
+google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
-gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
+honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
diff --git a/vendor/go.opencensus.io/metric/metricexport/reader.go b/vendor/go.opencensus.io/metric/metricexport/reader.go
index b920bacd8..8a09d0f00 100644
--- a/vendor/go.opencensus.io/metric/metricexport/reader.go
+++ b/vendor/go.opencensus.io/metric/metricexport/reader.go
@@ -130,7 +130,7 @@ func (ir *IntervalReader) Start() error {
 		reportingInterval = ir.ReportingInterval
 	}
 
-	if ir.done != nil {
+	if ir.quit != nil {
 		return errAlreadyStarted
 	}
 	ir.timer = time.NewTicker(reportingInterval)
@@ -172,6 +172,19 @@ func (ir *IntervalReader) Stop() {
 	ir.quit = nil
 }
 
+// Flush flushes the metrics if IntervalReader is stopped, otherwise no-op.
+func (ir *IntervalReader) Flush() {
+	ir.mu.Lock()
+	defer ir.mu.Unlock()
+
+	// No-op if IntervalReader is not stopped
+	if ir.quit != nil {
+		return
+	}
+
+	ir.reader.ReadAndExport(ir.exporter)
+}
+
 // ReadAndExport reads metrics from all producer registered with
 // producer manager and then exports them using provided exporter.
 func (r *Reader) ReadAndExport(exporter Exporter) {
diff --git a/vendor/go.opencensus.io/trace/basetypes.go b/vendor/go.opencensus.io/trace/basetypes.go
index 0c54492a2..c8e26ed63 100644
--- a/vendor/go.opencensus.io/trace/basetypes.go
+++ b/vendor/go.opencensus.io/trace/basetypes.go
@@ -49,6 +49,16 @@ type Attribute struct {
 	value interface{}
 }
 
+// Key returns the attribute's key
+func (a *Attribute) Key() string {
+	return a.key
+}
+
+// Value returns the attribute's value
+func (a *Attribute) Value() interface{} {
+	return a.value
+}
+
 // BoolAttribute returns a bool-valued attribute.
 func BoolAttribute(key string, value bool) Attribute {
 	return Attribute{key: key, value: value}
diff --git a/vendor/go.opencensus.io/trace/spanstore.go b/vendor/go.opencensus.io/trace/spanstore.go
index c442d9902..e601f76f2 100644
--- a/vendor/go.opencensus.io/trace/spanstore.go
+++ b/vendor/go.opencensus.io/trace/spanstore.go
@@ -48,8 +48,10 @@ func (i internalOnly) ReportActiveSpans(name string) []*SpanData {
 	var out []*SpanData
 	s.mu.Lock()
 	defer s.mu.Unlock()
-	for span := range s.active {
-		out = append(out, span.makeSpanData())
+	for activeSpan := range s.active {
+		if s, ok := activeSpan.(*span); ok {
+			out = append(out, s.makeSpanData())
+		}
 	}
 	return out
 }
@@ -185,7 +187,7 @@ func (i internalOnly) ReportSpansByLatency(name string, minLatency, maxLatency t
 // bucketed by latency.
 type spanStore struct {
 	mu                     sync.Mutex // protects everything below.
-	active                 map[*Span]struct{}
+	active                 map[SpanInterface]struct{}
 	errors                 map[int32]*bucket
 	latency                []bucket
 	maxSpansPerErrorBucket int
@@ -194,7 +196,7 @@ type spanStore struct {
 // newSpanStore creates a span store.
 func newSpanStore(name string, latencyBucketSize int, errorBucketSize int) *spanStore {
 	s := &spanStore{
-		active:                 make(map[*Span]struct{}),
+		active:                 make(map[SpanInterface]struct{}),
 		latency:                make([]bucket, len(defaultLatencies)+1),
 		maxSpansPerErrorBucket: errorBucketSize,
 	}
@@ -271,7 +273,7 @@ func (s *spanStore) resize(latencyBucketSize int, errorBucketSize int) {
 }
 
 // add adds a span to the active bucket of the spanStore.
-func (s *spanStore) add(span *Span) {
+func (s *spanStore) add(span SpanInterface) {
 	s.mu.Lock()
 	s.active[span] = struct{}{}
 	s.mu.Unlock()
@@ -279,7 +281,7 @@ func (s *spanStore) add(span *Span) {
 
 // finished removes a span from the active set, and adds a corresponding
 // SpanData to a latency or error bucket.
-func (s *spanStore) finished(span *Span, sd *SpanData) {
+func (s *spanStore) finished(span SpanInterface, sd *SpanData) {
 	latency := sd.EndTime.Sub(sd.StartTime)
 	if latency < 0 {
 		latency = 0
diff --git a/vendor/go.opencensus.io/trace/trace.go b/vendor/go.opencensus.io/trace/trace.go
index daf895596..861df9d39 100644
--- a/vendor/go.opencensus.io/trace/trace.go
+++ b/vendor/go.opencensus.io/trace/trace.go
@@ -28,12 +28,16 @@ import (
 	"go.opencensus.io/trace/tracestate"
 )
 
+type tracer struct{}
+
+var _ Tracer = &tracer{}
+
 // Span represents a span of a trace.  It has an associated SpanContext, and
 // stores data accumulated while the span is active.
 //
 // Ideally users should interact with Spans by calling the functions in this
 // package that take a Context parameter.
-type Span struct {
+type span struct {
 	// data contains information recorded about the span.
 	//
 	// It will be non-nil if we are exporting the span or recording events for it.
@@ -66,7 +70,7 @@ type Span struct {
 // IsRecordingEvents returns true if events are being recorded for this span.
 // Use this check to avoid computing expensive annotations when they will never
 // be used.
-func (s *Span) IsRecordingEvents() bool {
+func (s *span) IsRecordingEvents() bool {
 	if s == nil {
 		return false
 	}
@@ -109,13 +113,13 @@ type SpanContext struct {
 type contextKey struct{}
 
 // FromContext returns the Span stored in a context, or nil if there isn't one.
-func FromContext(ctx context.Context) *Span {
+func (t *tracer) FromContext(ctx context.Context) *Span {
 	s, _ := ctx.Value(contextKey{}).(*Span)
 	return s
 }
 
 // NewContext returns a new context with the given Span attached.
-func NewContext(parent context.Context, s *Span) context.Context {
+func (t *tracer) NewContext(parent context.Context, s *Span) context.Context {
 	return context.WithValue(parent, contextKey{}, s)
 }
 
@@ -166,12 +170,14 @@ func WithSampler(sampler Sampler) StartOption {
 //
 // Returned context contains the newly created span. You can use it to
 // propagate the returned span in process.
-func StartSpan(ctx context.Context, name string, o ...StartOption) (context.Context, *Span) {
+func (t *tracer) StartSpan(ctx context.Context, name string, o ...StartOption) (context.Context, *Span) {
 	var opts StartOptions
 	var parent SpanContext
-	if p := FromContext(ctx); p != nil {
-		p.addChild()
-		parent = p.spanContext
+	if p := t.FromContext(ctx); p != nil {
+		if ps, ok := p.internal.(*span); ok {
+			ps.addChild()
+		}
+		parent = p.SpanContext()
 	}
 	for _, op := range o {
 		op(&opts)
@@ -180,7 +186,8 @@ func StartSpan(ctx context.Context, name string, o ...StartOption) (context.Cont
 
 	ctx, end := startExecutionTracerTask(ctx, name)
 	span.executionTracerTaskEnd = end
-	return NewContext(ctx, span), span
+	extSpan := NewSpan(span)
+	return t.NewContext(ctx, extSpan), extSpan
 }
 
 // StartSpanWithRemoteParent starts a new child span of the span from the given parent.
@@ -190,7 +197,7 @@ func StartSpan(ctx context.Context, name string, o ...StartOption) (context.Cont
 //
 // Returned context contains the newly created span. You can use it to
 // propagate the returned span in process.
-func StartSpanWithRemoteParent(ctx context.Context, name string, parent SpanContext, o ...StartOption) (context.Context, *Span) {
+func (t *tracer) StartSpanWithRemoteParent(ctx context.Context, name string, parent SpanContext, o ...StartOption) (context.Context, *Span) {
 	var opts StartOptions
 	for _, op := range o {
 		op(&opts)
@@ -198,12 +205,13 @@ func StartSpanWithRemoteParent(ctx context.Context, name string, parent SpanCont
 	span := startSpanInternal(name, parent != SpanContext{}, parent, true, opts)
 	ctx, end := startExecutionTracerTask(ctx, name)
 	span.executionTracerTaskEnd = end
-	return NewContext(ctx, span), span
+	extSpan := NewSpan(span)
+	return t.NewContext(ctx, extSpan), extSpan
 }
 
-func startSpanInternal(name string, hasParent bool, parent SpanContext, remoteParent bool, o StartOptions) *Span {
-	span := &Span{}
-	span.spanContext = parent
+func startSpanInternal(name string, hasParent bool, parent SpanContext, remoteParent bool, o StartOptions) *span {
+	s := &span{}
+	s.spanContext = parent
 
 	cfg := config.Load().(*Config)
 	if gen, ok := cfg.IDGenerator.(*defaultIDGenerator); ok {
@@ -212,9 +220,9 @@ func startSpanInternal(name string, hasParent bool, parent SpanContext, remotePa
 	}
 
 	if !hasParent {
-		span.spanContext.TraceID = cfg.IDGenerator.NewTraceID()
+		s.spanContext.TraceID = cfg.IDGenerator.NewTraceID()
 	}
-	span.spanContext.SpanID = cfg.IDGenerator.NewSpanID()
+	s.spanContext.SpanID = cfg.IDGenerator.NewSpanID()
 	sampler := cfg.DefaultSampler
 
 	if !hasParent || remoteParent || o.Sampler != nil {
@@ -226,47 +234,47 @@ func startSpanInternal(name string, hasParent bool, parent SpanContext, remotePa
 		if o.Sampler != nil {
 			sampler = o.Sampler
 		}
-		span.spanContext.setIsSampled(sampler(SamplingParameters{
+		s.spanContext.setIsSampled(sampler(SamplingParameters{
 			ParentContext:   parent,
-			TraceID:         span.spanContext.TraceID,
-			SpanID:          span.spanContext.SpanID,
+			TraceID:         s.spanContext.TraceID,
+			SpanID:          s.spanContext.SpanID,
 			Name:            name,
 			HasRemoteParent: remoteParent}).Sample)
 	}
 
-	if !internal.LocalSpanStoreEnabled && !span.spanContext.IsSampled() {
-		return span
+	if !internal.LocalSpanStoreEnabled && !s.spanContext.IsSampled() {
+		return s
 	}
 
-	span.data = &SpanData{
-		SpanContext:     span.spanContext,
+	s.data = &SpanData{
+		SpanContext:     s.spanContext,
 		StartTime:       time.Now(),
 		SpanKind:        o.SpanKind,
 		Name:            name,
 		HasRemoteParent: remoteParent,
 	}
-	span.lruAttributes = newLruMap(cfg.MaxAttributesPerSpan)
-	span.annotations = newEvictedQueue(cfg.MaxAnnotationEventsPerSpan)
-	span.messageEvents = newEvictedQueue(cfg.MaxMessageEventsPerSpan)
-	span.links = newEvictedQueue(cfg.MaxLinksPerSpan)
+	s.lruAttributes = newLruMap(cfg.MaxAttributesPerSpan)
+	s.annotations = newEvictedQueue(cfg.MaxAnnotationEventsPerSpan)
+	s.messageEvents = newEvictedQueue(cfg.MaxMessageEventsPerSpan)
+	s.links = newEvictedQueue(cfg.MaxLinksPerSpan)
 
 	if hasParent {
-		span.data.ParentSpanID = parent.SpanID
+		s.data.ParentSpanID = parent.SpanID
 	}
 	if internal.LocalSpanStoreEnabled {
 		var ss *spanStore
 		ss = spanStoreForNameCreateIfNew(name)
 		if ss != nil {
-			span.spanStore = ss
-			ss.add(span)
+			s.spanStore = ss
+			ss.add(s)
 		}
 	}
 
-	return span
+	return s
 }
 
 // End ends the span.
-func (s *Span) End() {
+func (s *span) End() {
 	if s == nil {
 		return
 	}
@@ -296,7 +304,7 @@ func (s *Span) End() {
 
 // makeSpanData produces a SpanData representing the current state of the Span.
 // It requires that s.data is non-nil.
-func (s *Span) makeSpanData() *SpanData {
+func (s *span) makeSpanData() *SpanData {
 	var sd SpanData
 	s.mu.Lock()
 	sd = *s.data
@@ -321,7 +329,7 @@ func (s *Span) makeSpanData() *SpanData {
 }
 
 // SpanContext returns the SpanContext of the span.
-func (s *Span) SpanContext() SpanContext {
+func (s *span) SpanContext() SpanContext {
 	if s == nil {
 		return SpanContext{}
 	}
@@ -329,7 +337,7 @@ func (s *Span) SpanContext() SpanContext {
 }
 
 // SetName sets the name of the span, if it is recording events.
-func (s *Span) SetName(name string) {
+func (s *span) SetName(name string) {
 	if !s.IsRecordingEvents() {
 		return
 	}
@@ -339,7 +347,7 @@ func (s *Span) SetName(name string) {
 }
 
 // SetStatus sets the status of the span, if it is recording events.
-func (s *Span) SetStatus(status Status) {
+func (s *span) SetStatus(status Status) {
 	if !s.IsRecordingEvents() {
 		return
 	}
@@ -348,7 +356,7 @@ func (s *Span) SetStatus(status Status) {
 	s.mu.Unlock()
 }
 
-func (s *Span) interfaceArrayToLinksArray() []Link {
+func (s *span) interfaceArrayToLinksArray() []Link {
 	linksArr := make([]Link, 0, len(s.links.queue))
 	for _, value := range s.links.queue {
 		linksArr = append(linksArr, value.(Link))
@@ -356,7 +364,7 @@ func (s *Span) interfaceArrayToLinksArray() []Link {
 	return linksArr
 }
 
-func (s *Span) interfaceArrayToMessageEventArray() []MessageEvent {
+func (s *span) interfaceArrayToMessageEventArray() []MessageEvent {
 	messageEventArr := make([]MessageEvent, 0, len(s.messageEvents.queue))
 	for _, value := range s.messageEvents.queue {
 		messageEventArr = append(messageEventArr, value.(MessageEvent))
@@ -364,7 +372,7 @@ func (s *Span) interfaceArrayToMessageEventArray() []MessageEvent {
 	return messageEventArr
 }
 
-func (s *Span) interfaceArrayToAnnotationArray() []Annotation {
+func (s *span) interfaceArrayToAnnotationArray() []Annotation {
 	annotationArr := make([]Annotation, 0, len(s.annotations.queue))
 	for _, value := range s.annotations.queue {
 		annotationArr = append(annotationArr, value.(Annotation))
@@ -372,7 +380,7 @@ func (s *Span) interfaceArrayToAnnotationArray() []Annotation {
 	return annotationArr
 }
 
-func (s *Span) lruAttributesToAttributeMap() map[string]interface{} {
+func (s *span) lruAttributesToAttributeMap() map[string]interface{} {
 	attributes := make(map[string]interface{}, s.lruAttributes.len())
 	for _, key := range s.lruAttributes.keys() {
 		value, ok := s.lruAttributes.get(key)
@@ -384,13 +392,13 @@ func (s *Span) lruAttributesToAttributeMap() map[string]interface{} {
 	return attributes
 }
 
-func (s *Span) copyToCappedAttributes(attributes []Attribute) {
+func (s *span) copyToCappedAttributes(attributes []Attribute) {
 	for _, a := range attributes {
 		s.lruAttributes.add(a.key, a.value)
 	}
 }
 
-func (s *Span) addChild() {
+func (s *span) addChild() {
 	if !s.IsRecordingEvents() {
 		return
 	}
@@ -402,7 +410,7 @@ func (s *Span) addChild() {
 // AddAttributes sets attributes in the span.
 //
 // Existing attributes whose keys appear in the attributes parameter are overwritten.
-func (s *Span) AddAttributes(attributes ...Attribute) {
+func (s *span) AddAttributes(attributes ...Attribute) {
 	if !s.IsRecordingEvents() {
 		return
 	}
@@ -411,49 +419,27 @@ func (s *Span) AddAttributes(attributes ...Attribute) {
 	s.mu.Unlock()
 }
 
-// copyAttributes copies a slice of Attributes into a map.
-func copyAttributes(m map[string]interface{}, attributes []Attribute) {
-	for _, a := range attributes {
-		m[a.key] = a.value
-	}
-}
-
-func (s *Span) lazyPrintfInternal(attributes []Attribute, format string, a ...interface{}) {
+func (s *span) printStringInternal(attributes []Attribute, str string) {
 	now := time.Now()
-	msg := fmt.Sprintf(format, a...)
-	var m map[string]interface{}
-	s.mu.Lock()
+	var am map[string]interface{}
 	if len(attributes) != 0 {
-		m = make(map[string]interface{}, len(attributes))
-		copyAttributes(m, attributes)
+		am = make(map[string]interface{}, len(attributes))
+		for _, attr := range attributes {
+			am[attr.key] = attr.value
+		}
 	}
-	s.annotations.add(Annotation{
-		Time:       now,
-		Message:    msg,
-		Attributes: m,
-	})
-	s.mu.Unlock()
-}
-
-func (s *Span) printStringInternal(attributes []Attribute, str string) {
-	now := time.Now()
-	var a map[string]interface{}
 	s.mu.Lock()
-	if len(attributes) != 0 {
-		a = make(map[string]interface{}, len(attributes))
-		copyAttributes(a, attributes)
-	}
 	s.annotations.add(Annotation{
 		Time:       now,
 		Message:    str,
-		Attributes: a,
+		Attributes: am,
 	})
 	s.mu.Unlock()
 }
 
 // Annotate adds an annotation with attributes.
 // Attributes can be nil.
-func (s *Span) Annotate(attributes []Attribute, str string) {
+func (s *span) Annotate(attributes []Attribute, str string) {
 	if !s.IsRecordingEvents() {
 		return
 	}
@@ -461,11 +447,11 @@ func (s *Span) Annotate(attributes []Attribute, str string) {
 }
 
 // Annotatef adds an annotation with attributes.
-func (s *Span) Annotatef(attributes []Attribute, format string, a ...interface{}) {
+func (s *span) Annotatef(attributes []Attribute, format string, a ...interface{}) {
 	if !s.IsRecordingEvents() {
 		return
 	}
-	s.lazyPrintfInternal(attributes, format, a...)
+	s.printStringInternal(attributes, fmt.Sprintf(format, a...))
 }
 
 // AddMessageSendEvent adds a message send event to the span.
@@ -474,7 +460,7 @@ func (s *Span) Annotatef(attributes []Attribute, format string, a ...interface{}
 // unique in this span and the same between the send event and the receive
 // event (this allows to identify a message between the sender and receiver).
 // For example, this could be a sequence id.
-func (s *Span) AddMessageSendEvent(messageID, uncompressedByteSize, compressedByteSize int64) {
+func (s *span) AddMessageSendEvent(messageID, uncompressedByteSize, compressedByteSize int64) {
 	if !s.IsRecordingEvents() {
 		return
 	}
@@ -496,7 +482,7 @@ func (s *Span) AddMessageSendEvent(messageID, uncompressedByteSize, compressedBy
 // unique in this span and the same between the send event and the receive
 // event (this allows to identify a message between the sender and receiver).
 // For example, this could be a sequence id.
-func (s *Span) AddMessageReceiveEvent(messageID, uncompressedByteSize, compressedByteSize int64) {
+func (s *span) AddMessageReceiveEvent(messageID, uncompressedByteSize, compressedByteSize int64) {
 	if !s.IsRecordingEvents() {
 		return
 	}
@@ -513,7 +499,7 @@ func (s *Span) AddMessageReceiveEvent(messageID, uncompressedByteSize, compresse
 }
 
 // AddLink adds a link to the span.
-func (s *Span) AddLink(l Link) {
+func (s *span) AddLink(l Link) {
 	if !s.IsRecordingEvents() {
 		return
 	}
@@ -522,7 +508,7 @@ func (s *Span) AddLink(l Link) {
 	s.mu.Unlock()
 }
 
-func (s *Span) String() string {
+func (s *span) String() string {
 	if s == nil {
 		return "<nil>"
 	}
diff --git a/vendor/go.opencensus.io/trace/trace_api.go b/vendor/go.opencensus.io/trace/trace_api.go
new file mode 100644
index 000000000..9e2c3a999
--- /dev/null
+++ b/vendor/go.opencensus.io/trace/trace_api.go
@@ -0,0 +1,265 @@
+// Copyright 2020, OpenCensus Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package trace
+
+import (
+	"context"
+)
+
+// DefaultTracer is the tracer used when package-level exported functions are invoked.
+var DefaultTracer Tracer = &tracer{}
+
+// Tracer can start spans and access context functions.
+type Tracer interface {
+
+	// StartSpan starts a new child span of the current span in the context. If
+	// there is no span in the context, creates a new trace and span.
+	//
+	// Returned context contains the newly created span. You can use it to
+	// propagate the returned span in process.
+	StartSpan(ctx context.Context, name string, o ...StartOption) (context.Context, *Span)
+
+	// StartSpanWithRemoteParent starts a new child span of the span from the given parent.
+	//
+	// If the incoming context contains a parent, it ignores. StartSpanWithRemoteParent is
+	// preferred for cases where the parent is propagated via an incoming request.
+	//
+	// Returned context contains the newly created span. You can use it to
+	// propagate the returned span in process.
+	StartSpanWithRemoteParent(ctx context.Context, name string, parent SpanContext, o ...StartOption) (context.Context, *Span)
+
+	// FromContext returns the Span stored in a context, or nil if there isn't one.
+	FromContext(ctx context.Context) *Span
+
+	// NewContext returns a new context with the given Span attached.
+	NewContext(parent context.Context, s *Span) context.Context
+}
+
+// StartSpan starts a new child span of the current span in the context. If
+// there is no span in the context, creates a new trace and span.
+//
+// Returned context contains the newly created span. You can use it to
+// propagate the returned span in process.
+func StartSpan(ctx context.Context, name string, o ...StartOption) (context.Context, *Span) {
+	return DefaultTracer.StartSpan(ctx, name, o...)
+}
+
+// StartSpanWithRemoteParent starts a new child span of the span from the given parent.
+//
+// If the incoming context contains a parent, it ignores. StartSpanWithRemoteParent is
+// preferred for cases where the parent is propagated via an incoming request.
+//
+// Returned context contains the newly created span. You can use it to
+// propagate the returned span in process.
+func StartSpanWithRemoteParent(ctx context.Context, name string, parent SpanContext, o ...StartOption) (context.Context, *Span) {
+	return DefaultTracer.StartSpanWithRemoteParent(ctx, name, parent, o...)
+}
+
+// FromContext returns the Span stored in a context, or a Span that is not
+// recording events if there isn't one.
+func FromContext(ctx context.Context) *Span {
+	return DefaultTracer.FromContext(ctx)
+}
+
+// NewContext returns a new context with the given Span attached.
+func NewContext(parent context.Context, s *Span) context.Context {
+	return DefaultTracer.NewContext(parent, s)
+}
+
+// SpanInterface represents a span of a trace.  It has an associated SpanContext, and
+// stores data accumulated while the span is active.
+//
+// Ideally users should interact with Spans by calling the functions in this
+// package that take a Context parameter.
+type SpanInterface interface {
+
+	// IsRecordingEvents returns true if events are being recorded for this span.
+	// Use this check to avoid computing expensive annotations when they will never
+	// be used.
+	IsRecordingEvents() bool
+
+	// End ends the span.
+	End()
+
+	// SpanContext returns the SpanContext of the span.
+	SpanContext() SpanContext
+
+	// SetName sets the name of the span, if it is recording events.
+	SetName(name string)
+
+	// SetStatus sets the status of the span, if it is recording events.
+	SetStatus(status Status)
+
+	// AddAttributes sets attributes in the span.
+	//
+	// Existing attributes whose keys appear in the attributes parameter are overwritten.
+	AddAttributes(attributes ...Attribute)
+
+	// Annotate adds an annotation with attributes.
+	// Attributes can be nil.
+	Annotate(attributes []Attribute, str string)
+
+	// Annotatef adds an annotation with attributes.
+	Annotatef(attributes []Attribute, format string, a ...interface{})
+
+	// AddMessageSendEvent adds a message send event to the span.
+	//
+	// messageID is an identifier for the message, which is recommended to be
+	// unique in this span and the same between the send event and the receive
+	// event (this allows to identify a message between the sender and receiver).
+	// For example, this could be a sequence id.
+	AddMessageSendEvent(messageID, uncompressedByteSize, compressedByteSize int64)
+
+	// AddMessageReceiveEvent adds a message receive event to the span.
+	//
+	// messageID is an identifier for the message, which is recommended to be
+	// unique in this span and the same between the send event and the receive
+	// event (this allows to identify a message between the sender and receiver).
+	// For example, this could be a sequence id.
+	AddMessageReceiveEvent(messageID, uncompressedByteSize, compressedByteSize int64)
+
+	// AddLink adds a link to the span.
+	AddLink(l Link)
+
+	// String prints a string representation of a span.
+	String() string
+}
+
+// NewSpan is a convenience function for creating a *Span out of a *span
+func NewSpan(s SpanInterface) *Span {
+	return &Span{internal: s}
+}
+
+// Span is a struct wrapper around the SpanInt interface, which allows correctly handling
+// nil spans, while also allowing the SpanInterface implementation to be swapped out.
+type Span struct {
+	internal SpanInterface
+}
+
+// Internal returns the underlying implementation of the Span
+func (s *Span) Internal() SpanInterface {
+	return s.internal
+}
+
+// IsRecordingEvents returns true if events are being recorded for this span.
+// Use this check to avoid computing expensive annotations when they will never
+// be used.
+func (s *Span) IsRecordingEvents() bool {
+	if s == nil {
+		return false
+	}
+	return s.internal.IsRecordingEvents()
+}
+
+// End ends the span.
+func (s *Span) End() {
+	if s == nil {
+		return
+	}
+	s.internal.End()
+}
+
+// SpanContext returns the SpanContext of the span.
+func (s *Span) SpanContext() SpanContext {
+	if s == nil {
+		return SpanContext{}
+	}
+	return s.internal.SpanContext()
+}
+
+// SetName sets the name of the span, if it is recording events.
+func (s *Span) SetName(name string) {
+	if !s.IsRecordingEvents() {
+		return
+	}
+	s.internal.SetName(name)
+}
+
+// SetStatus sets the status of the span, if it is recording events.
+func (s *Span) SetStatus(status Status) {
+	if !s.IsRecordingEvents() {
+		return
+	}
+	s.internal.SetStatus(status)
+}
+
+// AddAttributes sets attributes in the span.
+//
+// Existing attributes whose keys appear in the attributes parameter are overwritten.
+func (s *Span) AddAttributes(attributes ...Attribute) {
+	if !s.IsRecordingEvents() {
+		return
+	}
+	s.internal.AddAttributes(attributes...)
+}
+
+// Annotate adds an annotation with attributes.
+// Attributes can be nil.
+func (s *Span) Annotate(attributes []Attribute, str string) {
+	if !s.IsRecordingEvents() {
+		return
+	}
+	s.internal.Annotate(attributes, str)
+}
+
+// Annotatef adds an annotation with attributes.
+func (s *Span) Annotatef(attributes []Attribute, format string, a ...interface{}) {
+	if !s.IsRecordingEvents() {
+		return
+	}
+	s.internal.Annotatef(attributes, format, a...)
+}
+
+// AddMessageSendEvent adds a message send event to the span.
+//
+// messageID is an identifier for the message, which is recommended to be
+// unique in this span and the same between the send event and the receive
+// event (this allows to identify a message between the sender and receiver).
+// For example, this could be a sequence id.
+func (s *Span) AddMessageSendEvent(messageID, uncompressedByteSize, compressedByteSize int64) {
+	if !s.IsRecordingEvents() {
+		return
+	}
+	s.internal.AddMessageSendEvent(messageID, uncompressedByteSize, compressedByteSize)
+}
+
+// AddMessageReceiveEvent adds a message receive event to the span.
+//
+// messageID is an identifier for the message, which is recommended to be
+// unique in this span and the same between the send event and the receive
+// event (this allows to identify a message between the sender and receiver).
+// For example, this could be a sequence id.
+func (s *Span) AddMessageReceiveEvent(messageID, uncompressedByteSize, compressedByteSize int64) {
+	if !s.IsRecordingEvents() {
+		return
+	}
+	s.internal.AddMessageReceiveEvent(messageID, uncompressedByteSize, compressedByteSize)
+}
+
+// AddLink adds a link to the span.
+func (s *Span) AddLink(l Link) {
+	if !s.IsRecordingEvents() {
+		return
+	}
+	s.internal.AddLink(l)
+}
+
+// String prints a string representation of a span.
+func (s *Span) String() string {
+	if s == nil {
+		return "<nil>"
+	}
+	return s.internal.String()
+}
diff --git a/vendor/go.uber.org/automaxprocs/internal/cgroups/subsys.go b/vendor/go.uber.org/automaxprocs/internal/cgroups/subsys.go
index 6dc1b6453..103e86f3c 100644
--- a/vendor/go.uber.org/automaxprocs/internal/cgroups/subsys.go
+++ b/vendor/go.uber.org/automaxprocs/internal/cgroups/subsys.go
@@ -52,7 +52,7 @@ type CGroupSubsys struct {
 // NewCGroupSubsysFromLine returns a new *CGroupSubsys by parsing a string in
 // the format of `/proc/$PID/cgroup`
 func NewCGroupSubsysFromLine(line string) (*CGroupSubsys, error) {
-	fields := strings.Split(line, _cgroupSep)
+	fields := strings.SplitN(line, _cgroupSep, _csFieldCount)
 
 	if len(fields) != _csFieldCount {
 		return nil, cgroupSubsysFormatInvalidError{line}
diff --git a/vendor/go.uber.org/automaxprocs/internal/runtime/runtime.go b/vendor/go.uber.org/automaxprocs/internal/runtime/runtime.go
index a0b078147..3a7515649 100644
--- a/vendor/go.uber.org/automaxprocs/internal/runtime/runtime.go
+++ b/vendor/go.uber.org/automaxprocs/internal/runtime/runtime.go
@@ -28,6 +28,6 @@ const (
 	CPUQuotaUndefined CPUQuotaStatus = iota
 	// CPUQuotaUsed is returned when a valid CPU quota can be used
 	CPUQuotaUsed
-	// CPUQuotaMinUsed is return when CPU quota is larger than the min value
+	// CPUQuotaMinUsed is return when CPU quota is smaller than the min value
 	CPUQuotaMinUsed
 )
diff --git a/vendor/go.uber.org/automaxprocs/maxprocs/version.go b/vendor/go.uber.org/automaxprocs/maxprocs/version.go
index 0161a67cd..d9ad8f4cf 100644
--- a/vendor/go.uber.org/automaxprocs/maxprocs/version.go
+++ b/vendor/go.uber.org/automaxprocs/maxprocs/version.go
@@ -21,4 +21,4 @@
 package maxprocs
 
 // Version is the current package version.
-const Version = "1.3.0"
+const Version = "1.4.0"
diff --git a/vendor/google.golang.org/grpc/Makefile b/vendor/google.golang.org/grpc/Makefile
index 3f661a787..1f0722f16 100644
--- a/vendor/google.golang.org/grpc/Makefile
+++ b/vendor/google.golang.org/grpc/Makefile
@@ -1,13 +1,13 @@
 all: vet test testrace
 
-build: deps
+build:
 	go build google.golang.org/grpc/...
 
 clean:
 	go clean -i google.golang.org/grpc/...
 
 deps:
-	go get -d -v google.golang.org/grpc/...
+	GO111MODULE=on go get -d -v google.golang.org/grpc/...
 
 proto:
 	@ if ! which protoc > /dev/null; then \
@@ -16,30 +16,18 @@ proto:
 	fi
 	go generate google.golang.org/grpc/...
 
-test: testdeps
+test:
 	go test -cpu 1,4 -timeout 7m google.golang.org/grpc/...
 
-testsubmodule: testdeps
+testsubmodule:
 	cd security/advancedtls && go test -cpu 1,4 -timeout 7m google.golang.org/grpc/security/advancedtls/...
 	cd security/authorization && go test -cpu 1,4 -timeout 7m google.golang.org/grpc/security/authorization/...
 
-testappengine: testappenginedeps
-	goapp test -cpu 1,4 -timeout 7m google.golang.org/grpc/...
-
-testappenginedeps:
-	goapp get -d -v -t -tags 'appengine appenginevm' google.golang.org/grpc/...
-
-testdeps:
-	go get -d -v -t google.golang.org/grpc/...
-
-testrace: testdeps
+testrace:
 	go test -race -cpu 1,4 -timeout 7m google.golang.org/grpc/...
 
-updatedeps:
-	go get -d -v -u -f google.golang.org/grpc/...
-
-updatetestdeps:
-	go get -d -v -t -u -f google.golang.org/grpc/...
+testdeps:
+	GO111MODULE=on go get -d -v -t google.golang.org/grpc/...
 
 vet: vetdeps
 	./vet.sh
@@ -51,14 +39,10 @@ vetdeps:
 	all \
 	build \
 	clean \
-	deps \
 	proto \
 	test \
 	testappengine \
 	testappenginedeps \
-	testdeps \
 	testrace \
-	updatedeps \
-	updatetestdeps \
 	vet \
 	vetdeps
diff --git a/vendor/google.golang.org/grpc/SECURITY.md b/vendor/google.golang.org/grpc/SECURITY.md
new file mode 100644
index 000000000..be6e10870
--- /dev/null
+++ b/vendor/google.golang.org/grpc/SECURITY.md
@@ -0,0 +1,3 @@
+# Security Policy
+
+For information on gRPC Security Policy and reporting potentional security issues, please see [gRPC CVE Process](https://github.com/grpc/proposal/blob/master/P4-grpc-cve-process.md).
diff --git a/vendor/google.golang.org/grpc/balancer/base/balancer.go b/vendor/google.golang.org/grpc/balancer/base/balancer.go
index 32d782f1c..e0d34288c 100644
--- a/vendor/google.golang.org/grpc/balancer/base/balancer.go
+++ b/vendor/google.golang.org/grpc/balancer/base/balancer.go
@@ -64,7 +64,7 @@ type baseBalancer struct {
 	csEvltr *balancer.ConnectivityStateEvaluator
 	state   connectivity.State
 
-	subConns map[resolver.Address]balancer.SubConn
+	subConns map[resolver.Address]balancer.SubConn // `attributes` is stripped from the keys of this map (the addresses)
 	scStates map[balancer.SubConn]connectivity.State
 	picker   balancer.Picker
 	config   Config
@@ -101,17 +101,41 @@ func (b *baseBalancer) UpdateClientConnState(s balancer.ClientConnState) error {
 	// addrsSet is the set converted from addrs, it's used for quick lookup of an address.
 	addrsSet := make(map[resolver.Address]struct{})
 	for _, a := range s.ResolverState.Addresses {
-		addrsSet[a] = struct{}{}
-		if _, ok := b.subConns[a]; !ok {
+		// Strip attributes from addresses before using them as map keys. So
+		// that when two addresses only differ in attributes pointers (but with
+		// the same attribute content), they are considered the same address.
+		//
+		// Note that this doesn't handle the case where the attribute content is
+		// different. So if users want to set different attributes to create
+		// duplicate connections to the same backend, it doesn't work. This is
+		// fine for now, because duplicate is done by setting Metadata today.
+		//
+		// TODO: read attributes to handle duplicate connections.
+		aNoAttrs := a
+		aNoAttrs.Attributes = nil
+		addrsSet[aNoAttrs] = struct{}{}
+		if sc, ok := b.subConns[aNoAttrs]; !ok {
 			// a is a new address (not existing in b.subConns).
+			//
+			// When creating SubConn, the original address with attributes is
+			// passed through. So that connection configurations in attributes
+			// (like creds) will be used.
 			sc, err := b.cc.NewSubConn([]resolver.Address{a}, balancer.NewSubConnOptions{HealthCheckEnabled: b.config.HealthCheck})
 			if err != nil {
 				logger.Warningf("base.baseBalancer: failed to create new SubConn: %v", err)
 				continue
 			}
-			b.subConns[a] = sc
+			b.subConns[aNoAttrs] = sc
 			b.scStates[sc] = connectivity.Idle
 			sc.Connect()
+		} else {
+			// Always update the subconn's address in case the attributes
+			// changed.
+			//
+			// The SubConn does a reflect.DeepEqual of the new and old
+			// addresses. So this is a noop if the current address is the same
+			// as the old one (including attributes).
+			sc.UpdateAddresses([]resolver.Address{a})
 		}
 	}
 	for a, sc := range b.subConns {
diff --git a/vendor/google.golang.org/grpc/balancer/grpclb/grpc_lb_v1/load_balancer_grpc.pb.go b/vendor/google.golang.org/grpc/balancer/grpclb/grpc_lb_v1/load_balancer_grpc.pb.go
index a0061631d..41e7274a0 100644
--- a/vendor/google.golang.org/grpc/balancer/grpclb/grpc_lb_v1/load_balancer_grpc.pb.go
+++ b/vendor/google.golang.org/grpc/balancer/grpclb/grpc_lb_v1/load_balancer_grpc.pb.go
@@ -30,7 +30,7 @@ func NewLoadBalancerClient(cc grpc.ClientConnInterface) LoadBalancerClient {
 }
 
 func (c *loadBalancerClient) BalanceLoad(ctx context.Context, opts ...grpc.CallOption) (LoadBalancer_BalanceLoadClient, error) {
-	stream, err := c.cc.NewStream(ctx, &_LoadBalancer_serviceDesc.Streams[0], "/grpc.lb.v1.LoadBalancer/BalanceLoad", opts...)
+	stream, err := c.cc.NewStream(ctx, &LoadBalancer_ServiceDesc.Streams[0], "/grpc.lb.v1.LoadBalancer/BalanceLoad", opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -84,7 +84,7 @@ type UnsafeLoadBalancerServer interface {
 }
 
 func RegisterLoadBalancerServer(s grpc.ServiceRegistrar, srv LoadBalancerServer) {
-	s.RegisterService(&_LoadBalancer_serviceDesc, srv)
+	s.RegisterService(&LoadBalancer_ServiceDesc, srv)
 }
 
 func _LoadBalancer_BalanceLoad_Handler(srv interface{}, stream grpc.ServerStream) error {
@@ -113,7 +113,10 @@ func (x *loadBalancerBalanceLoadServer) Recv() (*LoadBalanceRequest, error) {
 	return m, nil
 }
 
-var _LoadBalancer_serviceDesc = grpc.ServiceDesc{
+// LoadBalancer_ServiceDesc is the grpc.ServiceDesc for LoadBalancer service.
+// It's only intended for direct use with grpc.RegisterService,
+// and not to be introspected or modified (even as a copy)
+var LoadBalancer_ServiceDesc = grpc.ServiceDesc{
 	ServiceName: "grpc.lb.v1.LoadBalancer",
 	HandlerType: (*LoadBalancerServer)(nil),
 	Methods:     []grpc.MethodDesc{},
diff --git a/vendor/google.golang.org/grpc/balancer/grpclb/grpclb_remote_balancer.go b/vendor/google.golang.org/grpc/balancer/grpclb/grpclb_remote_balancer.go
index 8fdda0903..08d326ab4 100644
--- a/vendor/google.golang.org/grpc/balancer/grpclb/grpclb_remote_balancer.go
+++ b/vendor/google.golang.org/grpc/balancer/grpclb/grpclb_remote_balancer.go
@@ -35,6 +35,7 @@ import (
 	"google.golang.org/grpc/connectivity"
 	"google.golang.org/grpc/internal/backoff"
 	"google.golang.org/grpc/internal/channelz"
+	imetadata "google.golang.org/grpc/internal/metadata"
 	"google.golang.org/grpc/keepalive"
 	"google.golang.org/grpc/metadata"
 	"google.golang.org/grpc/resolver"
@@ -76,10 +77,7 @@ func (lb *lbBalancer) processServerList(l *lbpb.ServerList) {
 			// net.SplitHostPort() will return too many colons error.
 			ipStr = fmt.Sprintf("[%s]", ipStr)
 		}
-		addr := resolver.Address{
-			Addr:     fmt.Sprintf("%s:%d", ipStr, s.Port),
-			Metadata: &md,
-		}
+		addr := imetadata.Set(resolver.Address{Addr: fmt.Sprintf("%s:%d", ipStr, s.Port)}, md)
 		if logger.V(2) {
 			logger.Infof("lbBalancer: server list entry[%d]: ipStr:|%s|, port:|%d|, load balancer token:|%v|",
 				i, ipStr, s.Port, s.LoadBalanceToken)
@@ -163,19 +161,19 @@ func (lb *lbBalancer) refreshSubConns(backendAddrs []resolver.Address, fallback
 	addrsSet := make(map[resolver.Address]struct{})
 	// Create new SubConns.
 	for _, addr := range backendAddrs {
-		addrWithoutMD := addr
-		addrWithoutMD.Metadata = nil
-		addrsSet[addrWithoutMD] = struct{}{}
-		lb.backendAddrsWithoutMetadata = append(lb.backendAddrsWithoutMetadata, addrWithoutMD)
+		addrWithoutAttrs := addr
+		addrWithoutAttrs.Attributes = nil
+		addrsSet[addrWithoutAttrs] = struct{}{}
+		lb.backendAddrsWithoutMetadata = append(lb.backendAddrsWithoutMetadata, addrWithoutAttrs)
 
-		if _, ok := lb.subConns[addrWithoutMD]; !ok {
+		if _, ok := lb.subConns[addrWithoutAttrs]; !ok {
 			// Use addrWithMD to create the SubConn.
 			sc, err := lb.cc.NewSubConn([]resolver.Address{addr}, opts)
 			if err != nil {
 				logger.Warningf("grpclb: failed to create new SubConn: %v", err)
 				continue
 			}
-			lb.subConns[addrWithoutMD] = sc // Use the addr without MD as key for the map.
+			lb.subConns[addrWithoutAttrs] = sc // Use the addr without MD as key for the map.
 			if _, ok := lb.scStates[sc]; !ok {
 				// Only set state of new sc to IDLE. The state could already be
 				// READY for cached SubConns.
diff --git a/vendor/google.golang.org/grpc/balancer/grpclb/grpclb_util.go b/vendor/google.golang.org/grpc/balancer/grpclb/grpclb_util.go
index 636725e54..373f04b98 100644
--- a/vendor/google.golang.org/grpc/balancer/grpclb/grpclb_util.go
+++ b/vendor/google.golang.org/grpc/balancer/grpclb/grpclb_util.go
@@ -124,16 +124,16 @@ func (ccc *lbCacheClientConn) NewSubConn(addrs []resolver.Address, opts balancer
 	if len(addrs) != 1 {
 		return nil, fmt.Errorf("grpclb calling NewSubConn with addrs of length %v", len(addrs))
 	}
-	addrWithoutMD := addrs[0]
-	addrWithoutMD.Metadata = nil
+	addrWithoutAttrs := addrs[0]
+	addrWithoutAttrs.Attributes = nil
 
 	ccc.mu.Lock()
 	defer ccc.mu.Unlock()
-	if entry, ok := ccc.subConnCache[addrWithoutMD]; ok {
+	if entry, ok := ccc.subConnCache[addrWithoutAttrs]; ok {
 		// If entry is in subConnCache, the SubConn was being deleted.
 		// cancel function will never be nil.
 		entry.cancel()
-		delete(ccc.subConnCache, addrWithoutMD)
+		delete(ccc.subConnCache, addrWithoutAttrs)
 		return entry.sc, nil
 	}
 
@@ -142,7 +142,7 @@ func (ccc *lbCacheClientConn) NewSubConn(addrs []resolver.Address, opts balancer
 		return nil, err
 	}
 
-	ccc.subConnToAddr[scNew] = addrWithoutMD
+	ccc.subConnToAddr[scNew] = addrWithoutAttrs
 	return scNew, nil
 }
 
diff --git a/vendor/google.golang.org/grpc/clientconn.go b/vendor/google.golang.org/grpc/clientconn.go
index b35ba94f2..77a08fd33 100644
--- a/vendor/google.golang.org/grpc/clientconn.go
+++ b/vendor/google.golang.org/grpc/clientconn.go
@@ -109,11 +109,11 @@ type defaultConfigSelector struct {
 	sc *ServiceConfig
 }
 
-func (dcs *defaultConfigSelector) SelectConfig(rpcInfo iresolver.RPCInfo) *iresolver.RPCConfig {
+func (dcs *defaultConfigSelector) SelectConfig(rpcInfo iresolver.RPCInfo) (*iresolver.RPCConfig, error) {
 	return &iresolver.RPCConfig{
 		Context:      rpcInfo.Context,
 		MethodConfig: getMethodConfig(dcs.sc, rpcInfo.Method),
-	}
+	}, nil
 }
 
 // DialContext creates a client connection to the given target. By default, it's
@@ -270,7 +270,7 @@ func DialContext(ctx context.Context, target string, opts ...DialOption) (conn *
 		cc.authority = creds.Info().ServerName
 	} else if cc.dopts.insecure && cc.dopts.authority != "" {
 		cc.authority = cc.dopts.authority
-	} else if strings.HasPrefix(cc.target, "unix:") {
+	} else if strings.HasPrefix(cc.target, "unix:") || strings.HasPrefix(cc.target, "unix-abstract:") {
 		cc.authority = "localhost"
 	} else if strings.HasPrefix(cc.parsedTarget.Endpoint, ":") {
 		cc.authority = "localhost" + cc.parsedTarget.Endpoint
diff --git a/vendor/google.golang.org/grpc/credentials/alts/internal/proto/grpc_gcp/handshaker_grpc.pb.go b/vendor/google.golang.org/grpc/credentials/alts/internal/proto/grpc_gcp/handshaker_grpc.pb.go
index 6dd415854..75bbf87dd 100644
--- a/vendor/google.golang.org/grpc/credentials/alts/internal/proto/grpc_gcp/handshaker_grpc.pb.go
+++ b/vendor/google.golang.org/grpc/credentials/alts/internal/proto/grpc_gcp/handshaker_grpc.pb.go
@@ -35,7 +35,7 @@ func NewHandshakerServiceClient(cc grpc.ClientConnInterface) HandshakerServiceCl
 }
 
 func (c *handshakerServiceClient) DoHandshake(ctx context.Context, opts ...grpc.CallOption) (HandshakerService_DoHandshakeClient, error) {
-	stream, err := c.cc.NewStream(ctx, &_HandshakerService_serviceDesc.Streams[0], "/grpc.gcp.HandshakerService/DoHandshake", opts...)
+	stream, err := c.cc.NewStream(ctx, &HandshakerService_ServiceDesc.Streams[0], "/grpc.gcp.HandshakerService/DoHandshake", opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -96,7 +96,7 @@ type UnsafeHandshakerServiceServer interface {
 }
 
 func RegisterHandshakerServiceServer(s grpc.ServiceRegistrar, srv HandshakerServiceServer) {
-	s.RegisterService(&_HandshakerService_serviceDesc, srv)
+	s.RegisterService(&HandshakerService_ServiceDesc, srv)
 }
 
 func _HandshakerService_DoHandshake_Handler(srv interface{}, stream grpc.ServerStream) error {
@@ -125,7 +125,10 @@ func (x *handshakerServiceDoHandshakeServer) Recv() (*HandshakerReq, error) {
 	return m, nil
 }
 
-var _HandshakerService_serviceDesc = grpc.ServiceDesc{
+// HandshakerService_ServiceDesc is the grpc.ServiceDesc for HandshakerService service.
+// It's only intended for direct use with grpc.RegisterService,
+// and not to be introspected or modified (even as a copy)
+var HandshakerService_ServiceDesc = grpc.ServiceDesc{
 	ServiceName: "grpc.gcp.HandshakerService",
 	HandlerType: (*HandshakerServiceServer)(nil),
 	Methods:     []grpc.MethodDesc{},
diff --git a/vendor/google.golang.org/grpc/go.mod b/vendor/google.golang.org/grpc/go.mod
index 6feb697bb..cab74e557 100644
--- a/vendor/google.golang.org/grpc/go.mod
+++ b/vendor/google.golang.org/grpc/go.mod
@@ -3,8 +3,8 @@ module google.golang.org/grpc
 go 1.11
 
 require (
-	github.com/cncf/udpa/go v0.0.0-20200629203442-efcf912fb354
-	github.com/envoyproxy/go-control-plane v0.9.7
+	github.com/cncf/udpa/go v0.0.0-20201120205902-5459f2c99403
+	github.com/envoyproxy/go-control-plane v0.9.9-0.20201210154907-fd9021fe5dad
 	github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b
 	github.com/golang/protobuf v1.4.2
 	github.com/google/go-cmp v0.5.0
diff --git a/vendor/google.golang.org/grpc/go.sum b/vendor/google.golang.org/grpc/go.sum
index 293f54903..77ee70b44 100644
--- a/vendor/google.golang.org/grpc/go.sum
+++ b/vendor/google.golang.org/grpc/go.sum
@@ -6,13 +6,14 @@ github.com/census-instrumentation/opencensus-proto v0.2.1 h1:glEXhBS5PSLLv4IXzLA
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/client9/misspell v0.3.4 h1:ta993UF76GwbvJcIo3Y68y/M3WxlpEHPWIGDkJYwzJI=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
-github.com/cncf/udpa/go v0.0.0-20200629203442-efcf912fb354 h1:9kRtNpqLHbZVO/NNxhHp2ymxFxsHOe3x2efJGn//Tas=
-github.com/cncf/udpa/go v0.0.0-20200629203442-efcf912fb354/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
+github.com/cncf/udpa/go v0.0.0-20201120205902-5459f2c99403 h1:cqQfy1jclcSy/FwLjemeg3SR1yaINm74aQyupQ0Bl8M=
+github.com/cncf/udpa/go v0.0.0-20201120205902-5459f2c99403/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
+github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
-github.com/envoyproxy/go-control-plane v0.9.7 h1:EARl0OvqMoxq/UMgMSCLnXzkaXbxzskluEBlMQCJPms=
-github.com/envoyproxy/go-control-plane v0.9.7/go.mod h1:cwu0lG7PUMfa9snN8LXBig5ynNVH9qI8YYLbd1fK2po=
+github.com/envoyproxy/go-control-plane v0.9.9-0.20201210154907-fd9021fe5dad h1:EmNYJhPYy0pOFjCx2PrgtaBXmee0iUX9hLlxE1xHOJE=
+github.com/envoyproxy/go-control-plane v0.9.9-0.20201210154907-fd9021fe5dad/go.mod h1:cXg6YxExXjJnVBQHBLXeUAgxn2UodCpnH306RInaBQk=
 github.com/envoyproxy/protoc-gen-validate v0.1.0 h1:EQciDnbrYxy13PgWoY8AqoxGiPrpgBZ1R8UNe3ddc+A=
 github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b h1:VKtxabqXZkF25pY9ekfRL6a582T4P37/31XEstQ5p58=
@@ -36,10 +37,13 @@ github.com/google/go-cmp v0.5.0 h1:/QaMHBdZ26BB3SSst0Iwl10Epc+xhTquomWX0oZEB6w=
 github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/uuid v1.1.2 h1:EVhdT+1Kseyi1/pUmXKaFxYsDNy9RQYkMWRH68J/W7Y=
 github.com/google/uuid v1.1.2/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.5.1 h1:nOGnQDM7FYENwehXlg/kFVnos3rEvtKTjRvOWSzb6H4=
 github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2 h1:VklqNMn3ovrHsnt90PveolxSbWFaJdECFbxSq0Mqo2M=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
@@ -87,7 +91,9 @@ google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2
 google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
 google.golang.org/protobuf v1.25.0 h1:Ejskq+SyPohKW+1uil0JJMtmHCgJPJ/qWTxr8qp+R4c=
 google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
diff --git a/vendor/google.golang.org/grpc/internal/grpcutil/target.go b/vendor/google.golang.org/grpc/internal/grpcutil/target.go
index 3e1b22f5a..8833021da 100644
--- a/vendor/google.golang.org/grpc/internal/grpcutil/target.go
+++ b/vendor/google.golang.org/grpc/internal/grpcutil/target.go
@@ -41,16 +41,37 @@ func split2(s, sep string) (string, string, bool) {
 // not parse "unix:[path]" cases. This should be true in cases where a custom
 // dialer is present, to prevent a behavior change.
 //
-// If target is not a valid scheme://authority/endpoint, it returns {Endpoint:
-// target}.
+// If target is not a valid scheme://authority/endpoint as specified in
+// https://github.com/grpc/grpc/blob/master/doc/naming.md,
+// it returns {Endpoint: target}.
 func ParseTarget(target string, skipUnixColonParsing bool) (ret resolver.Target) {
 	var ok bool
+	if strings.HasPrefix(target, "unix-abstract:") {
+		if strings.HasPrefix(target, "unix-abstract://") {
+			// Maybe, with Authority specified, try to parse it
+			var remain string
+			ret.Scheme, remain, _ = split2(target, "://")
+			ret.Authority, ret.Endpoint, ok = split2(remain, "/")
+			if !ok {
+				// No Authority, add the "//" back
+				ret.Endpoint = "//" + remain
+			} else {
+				// Found Authority, add the "/" back
+				ret.Endpoint = "/" + ret.Endpoint
+			}
+		} else {
+			// Without Authority specified, split target on ":"
+			ret.Scheme, ret.Endpoint, _ = split2(target, ":")
+		}
+		return ret
+	}
 	ret.Scheme, ret.Endpoint, ok = split2(target, "://")
 	if !ok {
 		if strings.HasPrefix(target, "unix:") && !skipUnixColonParsing {
-			// Handle the "unix:[path]" case, because splitting on :// only
-			// handles the "unix://[/absolute/path]" case. Only handle if the
-			// dialer is nil, to avoid a behavior change with custom dialers.
+			// Handle the "unix:[local/path]" and "unix:[/absolute/path]" cases,
+			// because splitting on :// only handles the
+			// "unix://[/absolute/path]" case. Only handle if the dialer is nil,
+			// to avoid a behavior change with custom dialers.
 			return resolver.Target{Scheme: "unix", Endpoint: target[len("unix:"):]}
 		}
 		return resolver.Target{Endpoint: target}
@@ -61,7 +82,7 @@ func ParseTarget(target string, skipUnixColonParsing bool) (ret resolver.Target)
 	}
 	if ret.Scheme == "unix" {
 		// Add the "/" back in the unix case, so the unix resolver receives the
-		// actual endpoint.
+		// actual endpoint in the "unix://[/absolute/path]" case.
 		ret.Endpoint = "/" + ret.Endpoint
 	}
 	return ret
diff --git a/vendor/google.golang.org/grpc/internal/internal.go b/vendor/google.golang.org/grpc/internal/internal.go
index f83d66259..1e2834c70 100644
--- a/vendor/google.golang.org/grpc/internal/internal.go
+++ b/vendor/google.golang.org/grpc/internal/internal.go
@@ -60,7 +60,11 @@ var (
 	// GetXDSHandshakeInfoForTesting returns a pointer to the xds.HandshakeInfo
 	// stored in the passed in attributes. This is set by
 	// credentials/xds/xds.go.
-	GetXDSHandshakeInfoForTesting interface{} // func (attr *attributes.Attributes) *xds.HandshakeInfo
+	GetXDSHandshakeInfoForTesting interface{} // func (*attributes.Attributes) *xds.HandshakeInfo
+	// GetServerCredentials returns the transport credentials configured on a
+	// gRPC server. An xDS-enabled server needs to know what type of credentials
+	// is configured on the underlying gRPC server. This is set by server.go.
+	GetServerCredentials interface{} // func (*grpc.Server) credentials.TransportCredentials
 )
 
 // HealthChecker defines the signature of the client-side LB channel health checking function.
diff --git a/vendor/google.golang.org/grpc/internal/metadata/metadata.go b/vendor/google.golang.org/grpc/internal/metadata/metadata.go
new file mode 100644
index 000000000..302262613
--- /dev/null
+++ b/vendor/google.golang.org/grpc/internal/metadata/metadata.go
@@ -0,0 +1,50 @@
+/*
+ *
+ * Copyright 2020 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+// Package metadata contains functions to set and get metadata from addresses.
+//
+// This package is experimental.
+package metadata
+
+import (
+	"google.golang.org/grpc/metadata"
+	"google.golang.org/grpc/resolver"
+)
+
+type mdKeyType string
+
+const mdKey = mdKeyType("grpc.internal.address.metadata")
+
+// Get returns the metadata of addr.
+func Get(addr resolver.Address) metadata.MD {
+	attrs := addr.Attributes
+	if attrs == nil {
+		return nil
+	}
+	md, _ := attrs.Value(mdKey).(metadata.MD)
+	return md
+}
+
+// Set sets (overrides) the metadata in addr.
+//
+// When a SubConn is created with this address, the RPCs sent on it will all
+// have this metadata.
+func Set(addr resolver.Address, md metadata.MD) resolver.Address {
+	addr.Attributes = addr.Attributes.WithValues(mdKey, md)
+	return addr
+}
diff --git a/vendor/google.golang.org/grpc/internal/resolver/config_selector.go b/vendor/google.golang.org/grpc/internal/resolver/config_selector.go
index 5ef9262e5..e69900400 100644
--- a/vendor/google.golang.org/grpc/internal/resolver/config_selector.go
+++ b/vendor/google.golang.org/grpc/internal/resolver/config_selector.go
@@ -29,8 +29,10 @@ import (
 
 // ConfigSelector controls what configuration to use for every RPC.
 type ConfigSelector interface {
-	// Selects the configuration for the RPC.
-	SelectConfig(RPCInfo) *RPCConfig
+	// Selects the configuration for the RPC, or terminates it using the error.
+	// This error will be converted by the gRPC library to a status error with
+	// code UNKNOWN if it is not returned as a status error.
+	SelectConfig(RPCInfo) (*RPCConfig, error)
 }
 
 // RPCInfo contains RPC information needed by a ConfigSelector.
@@ -86,7 +88,7 @@ func (scs *SafeConfigSelector) UpdateConfigSelector(cs ConfigSelector) {
 }
 
 // SelectConfig defers to the current ConfigSelector in scs.
-func (scs *SafeConfigSelector) SelectConfig(r RPCInfo) *RPCConfig {
+func (scs *SafeConfigSelector) SelectConfig(r RPCInfo) (*RPCConfig, error) {
 	scs.mu.RLock()
 	defer scs.mu.RUnlock()
 	return scs.cs.SelectConfig(r)
diff --git a/vendor/google.golang.org/grpc/internal/resolver/unix/unix.go b/vendor/google.golang.org/grpc/internal/resolver/unix/unix.go
index d046e5061..0d5a811dd 100644
--- a/vendor/google.golang.org/grpc/internal/resolver/unix/unix.go
+++ b/vendor/google.golang.org/grpc/internal/resolver/unix/unix.go
@@ -20,21 +20,34 @@
 package unix
 
 import (
+	"fmt"
+
 	"google.golang.org/grpc/internal/transport/networktype"
 	"google.golang.org/grpc/resolver"
 )
 
-const scheme = "unix"
+const unixScheme = "unix"
+const unixAbstractScheme = "unix-abstract"
 
-type builder struct{}
+type builder struct {
+	scheme string
+}
 
-func (*builder) Build(target resolver.Target, cc resolver.ClientConn, _ resolver.BuildOptions) (resolver.Resolver, error) {
-	cc.UpdateState(resolver.State{Addresses: []resolver.Address{networktype.Set(resolver.Address{Addr: target.Endpoint}, "unix")}})
+func (b *builder) Build(target resolver.Target, cc resolver.ClientConn, _ resolver.BuildOptions) (resolver.Resolver, error) {
+	if target.Authority != "" {
+		return nil, fmt.Errorf("invalid (non-empty) authority: %v", target.Authority)
+	}
+	addr := resolver.Address{Addr: target.Endpoint}
+	if b.scheme == unixAbstractScheme {
+		// prepend "\x00" to address for unix-abstract
+		addr.Addr = "\x00" + addr.Addr
+	}
+	cc.UpdateState(resolver.State{Addresses: []resolver.Address{networktype.Set(addr, "unix")}})
 	return &nopResolver{}, nil
 }
 
-func (*builder) Scheme() string {
-	return scheme
+func (b *builder) Scheme() string {
+	return b.scheme
 }
 
 type nopResolver struct {
@@ -45,5 +58,6 @@ func (*nopResolver) ResolveNow(resolver.ResolveNowOptions) {}
 func (*nopResolver) Close() {}
 
 func init() {
-	resolver.Register(&builder{})
+	resolver.Register(&builder{scheme: unixScheme})
+	resolver.Register(&builder{scheme: unixAbstractScheme})
 }
diff --git a/vendor/google.golang.org/grpc/internal/syscall/syscall_linux.go b/vendor/google.golang.org/grpc/internal/syscall/syscall_linux.go
index 2fdcb76e6..4b2964f2a 100644
--- a/vendor/google.golang.org/grpc/internal/syscall/syscall_linux.go
+++ b/vendor/google.golang.org/grpc/internal/syscall/syscall_linux.go
@@ -44,25 +44,23 @@ func GetCPUTime() int64 {
 }
 
 // Rusage is an alias for syscall.Rusage under linux environment.
-type Rusage syscall.Rusage
+type Rusage = syscall.Rusage
 
 // GetRusage returns the resource usage of current process.
-func GetRusage() (rusage *Rusage) {
-	rusage = new(Rusage)
-	syscall.Getrusage(syscall.RUSAGE_SELF, (*syscall.Rusage)(rusage))
-	return
+func GetRusage() *Rusage {
+	rusage := new(Rusage)
+	syscall.Getrusage(syscall.RUSAGE_SELF, rusage)
+	return rusage
 }
 
 // CPUTimeDiff returns the differences of user CPU time and system CPU time used
 // between two Rusage structs.
 func CPUTimeDiff(first *Rusage, latest *Rusage) (float64, float64) {
-	f := (*syscall.Rusage)(first)
-	l := (*syscall.Rusage)(latest)
 	var (
-		utimeDiffs  = l.Utime.Sec - f.Utime.Sec
-		utimeDiffus = l.Utime.Usec - f.Utime.Usec
-		stimeDiffs  = l.Stime.Sec - f.Stime.Sec
-		stimeDiffus = l.Stime.Usec - f.Stime.Usec
+		utimeDiffs  = latest.Utime.Sec - first.Utime.Sec
+		utimeDiffus = latest.Utime.Usec - first.Utime.Usec
+		stimeDiffs  = latest.Stime.Sec - first.Stime.Sec
+		stimeDiffus = latest.Stime.Usec - first.Stime.Usec
 	)
 
 	uTimeElapsed := float64(utimeDiffs) + float64(utimeDiffus)*1.0e-6
diff --git a/vendor/google.golang.org/grpc/internal/syscall/syscall_nonlinux.go b/vendor/google.golang.org/grpc/internal/syscall/syscall_nonlinux.go
index adae60d65..7913ef1db 100644
--- a/vendor/google.golang.org/grpc/internal/syscall/syscall_nonlinux.go
+++ b/vendor/google.golang.org/grpc/internal/syscall/syscall_nonlinux.go
@@ -50,7 +50,7 @@ func GetCPUTime() int64 {
 type Rusage struct{}
 
 // GetRusage is a no-op function under non-linux or appengine environment.
-func GetRusage() (rusage *Rusage) {
+func GetRusage() *Rusage {
 	log()
 	return nil
 }
diff --git a/vendor/google.golang.org/grpc/internal/transport/http2_client.go b/vendor/google.golang.org/grpc/internal/transport/http2_client.go
index fef365c0d..8902b7f90 100644
--- a/vendor/google.golang.org/grpc/internal/transport/http2_client.go
+++ b/vendor/google.golang.org/grpc/internal/transport/http2_client.go
@@ -33,6 +33,7 @@ import (
 	"golang.org/x/net/http2"
 	"golang.org/x/net/http2/hpack"
 	"google.golang.org/grpc/internal/grpcutil"
+	imetadata "google.golang.org/grpc/internal/metadata"
 	"google.golang.org/grpc/internal/transport/networktype"
 
 	"google.golang.org/grpc/codes"
@@ -60,7 +61,7 @@ type http2Client struct {
 	cancel     context.CancelFunc
 	ctxDone    <-chan struct{} // Cache the ctx.Done() chan.
 	userAgent  string
-	md         interface{}
+	md         metadata.MD
 	conn       net.Conn // underlying communication channel
 	loopy      *loopyWriter
 	remoteAddr net.Addr
@@ -139,17 +140,26 @@ type http2Client struct {
 }
 
 func dial(ctx context.Context, fn func(context.Context, string) (net.Conn, error), addr resolver.Address, useProxy bool, grpcUA string) (net.Conn, error) {
+	address := addr.Addr
+	networkType, ok := networktype.Get(addr)
 	if fn != nil {
-		return fn(ctx, addr.Addr)
+		if networkType == "unix" && !strings.HasPrefix(address, "\x00") {
+			// For backward compatibility, if the user dialed "unix:///path",
+			// the passthrough resolver would be used and the user's custom
+			// dialer would see "unix:///path". Since the unix resolver is used
+			// and the address is now "/path", prepend "unix://" so the user's
+			// custom dialer sees the same address.
+			return fn(ctx, "unix://"+address)
+		}
+		return fn(ctx, address)
 	}
-	networkType := "tcp"
-	if n, ok := networktype.Get(addr); ok {
-		networkType = n
+	if !ok {
+		networkType, address = parseDialTarget(address)
 	}
 	if networkType == "tcp" && useProxy {
-		return proxyDial(ctx, addr.Addr, grpcUA)
+		return proxyDial(ctx, address, grpcUA)
 	}
-	return (&net.Dialer{}).DialContext(ctx, networkType, addr.Addr)
+	return (&net.Dialer{}).DialContext(ctx, networkType, address)
 }
 
 func isTemporary(err error) bool {
@@ -268,7 +278,6 @@ func newHTTP2Client(connectCtx, ctx context.Context, addr resolver.Address, opts
 		ctxDone:               ctx.Done(), // Cache Done chan.
 		cancel:                cancel,
 		userAgent:             opts.UserAgent,
-		md:                    addr.Metadata,
 		conn:                  conn,
 		remoteAddr:            conn.RemoteAddr(),
 		localAddr:             conn.LocalAddr(),
@@ -296,6 +305,12 @@ func newHTTP2Client(connectCtx, ctx context.Context, addr resolver.Address, opts
 		keepaliveEnabled:      keepaliveEnabled,
 		bufferPool:            newBufferPool(),
 	}
+
+	if md, ok := addr.Metadata.(*metadata.MD); ok {
+		t.md = *md
+	} else if md := imetadata.Get(addr); md != nil {
+		t.md = md
+	}
 	t.controlBuf = newControlBuffer(t.ctxDone)
 	if opts.InitialWindowSize >= defaultWindowSize {
 		t.initialWindowSize = opts.InitialWindowSize
@@ -512,14 +527,12 @@ func (t *http2Client) createHeaderFields(ctx context.Context, callHdr *CallHdr)
 			}
 		}
 	}
-	if md, ok := t.md.(*metadata.MD); ok {
-		for k, vv := range *md {
-			if isReservedHeader(k) {
-				continue
-			}
-			for _, v := range vv {
-				headerFields = append(headerFields, hpack.HeaderField{Name: k, Value: encodeMetadataHeader(k, v)})
-			}
+	for k, vv := range t.md {
+		if isReservedHeader(k) {
+			continue
+		}
+		for _, v := range vv {
+			headerFields = append(headerFields, hpack.HeaderField{Name: k, Value: encodeMetadataHeader(k, v)})
 		}
 	}
 	return headerFields, nil
diff --git a/vendor/google.golang.org/grpc/internal/transport/http_util.go b/vendor/google.golang.org/grpc/internal/transport/http_util.go
index 4d15afbf7..7e41d1183 100644
--- a/vendor/google.golang.org/grpc/internal/transport/http_util.go
+++ b/vendor/google.golang.org/grpc/internal/transport/http_util.go
@@ -27,6 +27,7 @@ import (
 	"math"
 	"net"
 	"net/http"
+	"net/url"
 	"strconv"
 	"strings"
 	"time"
@@ -598,3 +599,31 @@ func newFramer(conn net.Conn, writeBufferSize, readBufferSize int, maxHeaderList
 	f.fr.ReadMetaHeaders = hpack.NewDecoder(http2InitHeaderTableSize, nil)
 	return f
 }
+
+// parseDialTarget returns the network and address to pass to dialer.
+func parseDialTarget(target string) (string, string) {
+	net := "tcp"
+	m1 := strings.Index(target, ":")
+	m2 := strings.Index(target, ":/")
+	// handle unix:addr which will fail with url.Parse
+	if m1 >= 0 && m2 < 0 {
+		if n := target[0:m1]; n == "unix" {
+			return n, target[m1+1:]
+		}
+	}
+	if m2 >= 0 {
+		t, err := url.Parse(target)
+		if err != nil {
+			return net, target
+		}
+		scheme := t.Scheme
+		addr := t.Path
+		if scheme == "unix" {
+			if addr == "" {
+				addr = t.Host
+			}
+			return scheme, addr
+		}
+	}
+	return net, target
+}
diff --git a/vendor/google.golang.org/grpc/regenerate.sh b/vendor/google.golang.org/grpc/regenerate.sh
index 3443ad975..ed52187df 100644
--- a/vendor/google.golang.org/grpc/regenerate.sh
+++ b/vendor/google.golang.org/grpc/regenerate.sh
@@ -45,19 +45,6 @@ mkdir -p ${WORKDIR}/googleapis/google/rpc
 echo "curl https://raw.githubusercontent.com/googleapis/googleapis/master/google/rpc/code.proto"
 curl --silent https://raw.githubusercontent.com/googleapis/googleapis/master/google/rpc/code.proto > ${WORKDIR}/googleapis/google/rpc/code.proto
 
-# Pull in the following repos to build the MeshCA config proto.
-ENVOY_API_REPOS=(
-  "https://github.com/envoyproxy/data-plane-api"
-  "https://github.com/cncf/udpa"
-  "https://github.com/envoyproxy/protoc-gen-validate"
-)
-for repo in ${ENVOY_API_REPOS[@]}; do
-  dirname=$(basename ${repo})
-  mkdir -p ${WORKDIR}/${dirname}
-  echo "git clone ${repo}"
-  git clone --quiet ${repo} ${WORKDIR}/${dirname}
-done
-
 # Pull in the MeshCA service proto.
 mkdir -p ${WORKDIR}/istio/istio/google/security/meshca/v1
 echo "curl https://raw.githubusercontent.com/istio/istio/master/security/proto/providers/google/meshca.proto"
@@ -84,15 +71,15 @@ SOURCES=(
   ${WORKDIR}/grpc-proto/grpc/lookup/v1/rls.proto
   ${WORKDIR}/grpc-proto/grpc/lookup/v1/rls_config.proto
   ${WORKDIR}/grpc-proto/grpc/service_config/service_config.proto
-  ${WORKDIR}/grpc-proto/grpc/tls/provider/meshca/experimental/config.proto
+  ${WORKDIR}/grpc-proto/grpc/testing/*.proto
+  ${WORKDIR}/grpc-proto/grpc/core/*.proto
   ${WORKDIR}/istio/istio/google/security/meshca/v1/meshca.proto
 )
 
 # These options of the form 'Mfoo.proto=bar' instruct the codegen to use an
 # import path of 'bar' in the generated code when 'foo.proto' is imported in
 # one of the sources.
-OPTS=Mgrpc/service_config/service_config.proto=/internal/proto/grpc_service_config,\
-Menvoy/config/core/v3/config_source.proto=github.com/envoyproxy/go-control-plane/envoy/config/core/v3
+OPTS=Mgrpc/service_config/service_config.proto=/internal/proto/grpc_service_config,Mgrpc/core/stats.proto=google.golang.org/grpc/interop/grpc_testing/core
 
 for src in ${SOURCES[@]}; do
   echo "protoc ${src}"
@@ -100,9 +87,6 @@ for src in ${SOURCES[@]}; do
     -I"." \
     -I${WORKDIR}/grpc-proto \
     -I${WORKDIR}/googleapis \
-    -I${WORKDIR}/data-plane-api \
-    -I${WORKDIR}/udpa \
-    -I${WORKDIR}/protoc-gen-validate \
     -I${WORKDIR}/istio \
     ${src}
 done
@@ -113,9 +97,6 @@ for src in ${LEGACY_SOURCES[@]}; do
     -I"." \
     -I${WORKDIR}/grpc-proto \
     -I${WORKDIR}/googleapis \
-    -I${WORKDIR}/data-plane-api \
-    -I${WORKDIR}/udpa \
-    -I${WORKDIR}/protoc-gen-validate \
     -I${WORKDIR}/istio \
     ${src}
 done
@@ -132,6 +113,10 @@ rm ${WORKDIR}/out/google.golang.org/grpc/reflection/grpc_testingv3/*.pb.go
 # grpc/service_config/service_config.proto does not have a go_package option.
 mv ${WORKDIR}/out/grpc/service_config/service_config.pb.go internal/proto/grpc_service_config
 
+# grpc/testing does not have a go_package option.
+mv ${WORKDIR}/out/grpc/testing/*.pb.go interop/grpc_testing/
+mv ${WORKDIR}/out/grpc/core/*.pb.go interop/grpc_testing/core/
+
 # istio/google/security/meshca/v1/meshca.proto does not have a go_package option.
 mkdir -p ${WORKDIR}/out/google.golang.org/grpc/credentials/tls/certprovider/meshca/internal/v1/
 mv ${WORKDIR}/out/istio/google/security/meshca/v1/* ${WORKDIR}/out/google.golang.org/grpc/credentials/tls/certprovider/meshca/internal/v1/
diff --git a/vendor/google.golang.org/grpc/server.go b/vendor/google.golang.org/grpc/server.go
index 968eb598e..7a2aa28a1 100644
--- a/vendor/google.golang.org/grpc/server.go
+++ b/vendor/google.golang.org/grpc/server.go
@@ -40,6 +40,7 @@ import (
 	"google.golang.org/grpc/encoding"
 	"google.golang.org/grpc/encoding/proto"
 	"google.golang.org/grpc/grpclog"
+	"google.golang.org/grpc/internal"
 	"google.golang.org/grpc/internal/binarylog"
 	"google.golang.org/grpc/internal/channelz"
 	"google.golang.org/grpc/internal/grpcrand"
@@ -58,6 +59,12 @@ const (
 	defaultServerMaxSendMessageSize    = math.MaxInt32
 )
 
+func init() {
+	internal.GetServerCredentials = func(srv *Server) credentials.TransportCredentials {
+		return srv.opts.creds
+	}
+}
+
 var statusOK = status.New(codes.OK, "")
 var logger = grpclog.Component("core")
 
diff --git a/vendor/google.golang.org/grpc/stream.go b/vendor/google.golang.org/grpc/stream.go
index 8d4694a33..eda1248d6 100644
--- a/vendor/google.golang.org/grpc/stream.go
+++ b/vendor/google.golang.org/grpc/stream.go
@@ -175,7 +175,10 @@ func newClientStream(ctx context.Context, desc *StreamDesc, cc *ClientConn, meth
 
 	var mc serviceconfig.MethodConfig
 	var onCommit func()
-	rpcConfig := cc.safeConfigSelector.SelectConfig(iresolver.RPCInfo{Context: ctx, Method: method})
+	rpcConfig, err := cc.safeConfigSelector.SelectConfig(iresolver.RPCInfo{Context: ctx, Method: method})
+	if err != nil {
+		return nil, status.Convert(err).Err()
+	}
 	if rpcConfig != nil {
 		if rpcConfig.Context != nil {
 			ctx = rpcConfig.Context
diff --git a/vendor/google.golang.org/grpc/version.go b/vendor/google.golang.org/grpc/version.go
index 01f41739d..685b91c70 100644
--- a/vendor/google.golang.org/grpc/version.go
+++ b/vendor/google.golang.org/grpc/version.go
@@ -19,4 +19,4 @@
 package grpc
 
 // Version is the current grpc version.
-const Version = "1.34.0"
+const Version = "1.35.0"
diff --git a/vendor/knative.dev/pkg/controller/controller.go b/vendor/knative.dev/pkg/controller/controller.go
index 26030626e..27fe75e40 100644
--- a/vendor/knative.dev/pkg/controller/controller.go
+++ b/vendor/knative.dev/pkg/controller/controller.go
@@ -514,7 +514,7 @@ func (c *Impl) processNextWorkItem() bool {
 
 	// Embed the key into the logger and attach that to the context we pass
 	// to the Reconciler.
-	logger := c.logger.With(zap.String(logkey.TraceID, uuid.New().String()), zap.String(logkey.Key, keyStr))
+	logger := c.logger.With(zap.String(logkey.TraceID, uuid.NewString()), zap.String(logkey.Key, keyStr))
 	ctx := logging.WithLogger(context.Background(), logger)
 
 	// Run Reconcile, passing it the namespace/name string of the
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 4eb33efaf..7da6e1f5e 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -7,7 +7,7 @@ cloud.google.com/go/trace/apiv2
 contrib.go.opencensus.io/exporter/ocagent
 # contrib.go.opencensus.io/exporter/prometheus v0.2.1-0.20200609204449-6bcf6f8577f0
 contrib.go.opencensus.io/exporter/prometheus
-# contrib.go.opencensus.io/exporter/stackdriver v0.13.4
+# contrib.go.opencensus.io/exporter/stackdriver v0.13.5
 contrib.go.opencensus.io/exporter/stackdriver
 contrib.go.opencensus.io/exporter/stackdriver/monitoredresource
 contrib.go.opencensus.io/exporter/stackdriver/monitoredresource/aws
@@ -220,7 +220,7 @@ github.com/google/mako/internal/go/common
 github.com/google/mako/internal/quickstore_microservice/proto/quickstore_go_proto
 github.com/google/mako/proto/quickstore/quickstore_go_proto
 github.com/google/mako/spec/proto/mako_go_proto
-# github.com/google/uuid v1.1.2
+# github.com/google/uuid v1.2.0
 github.com/google/uuid
 # github.com/googleapis/gax-go/v2 v2.0.5
 github.com/googleapis/gax-go/v2
@@ -280,7 +280,7 @@ github.com/openzipkin/zipkin-go/reporter/http
 github.com/openzipkin/zipkin-go/reporter/recorder
 # github.com/pkg/errors v0.9.1
 github.com/pkg/errors
-# github.com/prometheus/client_golang v1.8.0
+# github.com/prometheus/client_golang v1.9.0
 ## explicit
 github.com/prometheus/client_golang/prometheus
 github.com/prometheus/client_golang/prometheus/internal
@@ -321,7 +321,7 @@ github.com/vdemeester/k8s-pkg-credentialprovider/aws
 github.com/vdemeester/k8s-pkg-credentialprovider/azure
 github.com/vdemeester/k8s-pkg-credentialprovider/gcp
 github.com/vdemeester/k8s-pkg-credentialprovider/secrets
-# go.opencensus.io v0.22.5
+# go.opencensus.io v0.22.6
 ## explicit
 go.opencensus.io
 go.opencensus.io/internal
@@ -346,7 +346,7 @@ go.opencensus.io/trace/tracestate
 # go.uber.org/atomic v1.7.0
 ## explicit
 go.uber.org/atomic
-# go.uber.org/automaxprocs v1.3.0
+# go.uber.org/automaxprocs v1.4.0
 ## explicit
 go.uber.org/automaxprocs/internal/cgroups
 go.uber.org/automaxprocs/internal/runtime
@@ -484,7 +484,7 @@ google.golang.org/appengine/internal/socket
 google.golang.org/appengine/internal/urlfetch
 google.golang.org/appengine/socket
 google.golang.org/appengine/urlfetch
-# google.golang.org/genproto v0.0.0-20201211151036-40ec1c210f7a
+# google.golang.org/genproto v0.0.0-20201214200347-8c77b98c765d
 google.golang.org/genproto/googleapis/api
 google.golang.org/genproto/googleapis/api/annotations
 google.golang.org/genproto/googleapis/api/distribution
@@ -498,7 +498,7 @@ google.golang.org/genproto/googleapis/monitoring/v3
 google.golang.org/genproto/googleapis/rpc/status
 google.golang.org/genproto/googleapis/type/calendarperiod
 google.golang.org/genproto/protobuf/field_mask
-# google.golang.org/grpc v1.34.0
+# google.golang.org/grpc v1.35.0
 ## explicit
 google.golang.org/grpc
 google.golang.org/grpc/attributes
@@ -537,6 +537,7 @@ google.golang.org/grpc/internal/grpclog
 google.golang.org/grpc/internal/grpcrand
 google.golang.org/grpc/internal/grpcsync
 google.golang.org/grpc/internal/grpcutil
+google.golang.org/grpc/internal/metadata
 google.golang.org/grpc/internal/resolver
 google.golang.org/grpc/internal/resolver/dns
 google.golang.org/grpc/internal/resolver/passthrough
@@ -1021,7 +1022,7 @@ knative.dev/caching/pkg/client/listers/caching/v1alpha1
 ## explicit
 knative.dev/hack
 knative.dev/hack/shell
-# knative.dev/networking v0.0.0-20210208003533-45b7ed13aeaa
+# knative.dev/networking v0.0.0-20210208175252-ab1235ed8672
 ## explicit
 knative.dev/networking/config
 knative.dev/networking/pkg
@@ -1056,7 +1057,7 @@ knative.dev/networking/test/conformance/ingress
 knative.dev/networking/test/defaultsystem
 knative.dev/networking/test/test_images/grpc-ping/proto
 knative.dev/networking/test/types
-# knative.dev/pkg v0.0.0-20210208131226-4b2ae073fa06
+# knative.dev/pkg v0.0.0-20210208175252-a02dcff9ee26
 ## explicit
 knative.dev/pkg/apiextensions/storageversion
 knative.dev/pkg/apiextensions/storageversion/cmd/migrate


Test patch:
diff --git a/pkg/reconciler/route/traffic/rollout_test.go b/pkg/reconciler/route/traffic/rollout_test.go
index 6a83205a2..64490b9d0 100644
--- a/pkg/reconciler/route/traffic/rollout_test.go
+++ b/pkg/reconciler/route/traffic/rollout_test.go
@@ -990,9 +990,9 @@ func TestStep(t *testing.T) {
 		},
 	}}
 
-	ctx := TestContextWithLogger(t)
 	for _, tc := range tests {
 		t.Run(tc.name, func(t *testing.T) {
+			ctx := TestContextWithLogger(t)
 			got, gotNS := tc.cur.Step(ctx, tc.prev, now)
 			if want := tc.want; !cmp.Equal(got, want, cmpopts.EquateEmpty()) {
 				t.Errorf("Wrong rolled rollout, diff(-want,+got):\n%s", cmp.Diff(want, got))
@@ -1249,7 +1249,8 @@ func TestAdjustPercentage(t *testing.T) {
 	}}
 	for _, tc := range tests {
 		t.Run(tc.name, func(t *testing.T) {
-			adjustPercentage(tc.goal, tc.prev)
+			logger := TestLogger(t)
+			adjustPercentage(tc.goal, tc.prev, logger)
 			if got, want := tc.prev.Revisions, tc.want; !cmp.Equal(got, want, cmpopts.EquateEmpty()) {
 				t.Errorf("Rollout Mistmatch(-want,+got):\n%s", cmp.Diff(want, got))
 			}
diff --git a/third_party/contour-latest/contour.yaml b/third_party/contour-latest/contour.yaml
index 23f2537fa..8e089f970 100644
--- a/third_party/contour-latest/contour.yaml
+++ b/third_party/contour-latest/contour.yaml
@@ -1641,7 +1641,7 @@ spec:
     spec:
       containers:
         - name: contour
-          image: gcr.io/knative-nightly/github.com/projectcontour/contour/cmd/contour@sha256:7bf07109c510de0674025a19eee8250f9752b580450086b70ff3b37772079983
+          image: gcr.io/knative-nightly/github.com/projectcontour/contour/cmd/contour@sha256:b3702010f94ed8c63bbaae1049442bde6254134a9858009e2d141186100132c6
           imagePullPolicy: Always
           command:
             - contour
@@ -1868,7 +1868,7 @@ spec:
             - --contour-key-file=/certs/tls.key
             - --config-path=/config/contour.yaml
           command: ["contour"]
-          image: gcr.io/knative-nightly/github.com/projectcontour/contour/cmd/contour@sha256:7bf07109c510de0674025a19eee8250f9752b580450086b70ff3b37772079983
+          image: gcr.io/knative-nightly/github.com/projectcontour/contour/cmd/contour@sha256:b3702010f94ed8c63bbaae1049442bde6254134a9858009e2d141186100132c6
           imagePullPolicy: IfNotPresent
           name: contour
           ports:
@@ -1957,7 +1957,7 @@ spec:
           args:
             - envoy
             - shutdown-manager
-          image: gcr.io/knative-nightly/github.com/projectcontour/contour/cmd/contour@sha256:7bf07109c510de0674025a19eee8250f9752b580450086b70ff3b37772079983
+          image: gcr.io/knative-nightly/github.com/projectcontour/contour/cmd/contour@sha256:b3702010f94ed8c63bbaae1049442bde6254134a9858009e2d141186100132c6
           imagePullPolicy: IfNotPresent
           lifecycle:
             preStop:
@@ -2036,7 +2036,7 @@ spec:
             - --envoy-key-file=/certs/tls.key
           command:
             - contour
-          image: gcr.io/knative-nightly/github.com/projectcontour/contour/cmd/contour@sha256:7bf07109c510de0674025a19eee8250f9752b580450086b70ff3b37772079983
+          image: gcr.io/knative-nightly/github.com/projectcontour/contour/cmd/contour@sha256:b3702010f94ed8c63bbaae1049442bde6254134a9858009e2d141186100132c6
           imagePullPolicy: IfNotPresent
           name: envoy-initconfig
           volumeMounts:
@@ -2261,7 +2261,7 @@ spec:
     spec:
       containers:
         - name: contour
-          image: gcr.io/knative-nightly/github.com/projectcontour/contour/cmd/contour@sha256:7bf07109c510de0674025a19eee8250f9752b580450086b70ff3b37772079983
+          image: gcr.io/knative-nightly/github.com/projectcontour/contour/cmd/contour@sha256:b3702010f94ed8c63bbaae1049442bde6254134a9858009e2d141186100132c6
           imagePullPolicy: Always
           command:
             - contour
@@ -2381,7 +2381,7 @@ spec:
             - --contour-key-file=/certs/tls.key
             - --config-path=/config/contour.yaml
           command: ["contour"]
-          image: gcr.io/knative-nightly/github.com/projectcontour/contour/cmd/contour@sha256:7bf07109c510de0674025a19eee8250f9752b580450086b70ff3b37772079983
+          image: gcr.io/knative-nightly/github.com/projectcontour/contour/cmd/contour@sha256:b3702010f94ed8c63bbaae1049442bde6254134a9858009e2d141186100132c6
           imagePullPolicy: IfNotPresent
           name: contour
           ports:
@@ -2470,7 +2470,7 @@ spec:
           args:
             - envoy
             - shutdown-manager
-          image: gcr.io/knative-nightly/github.com/projectcontour/contour/cmd/contour@sha256:7bf07109c510de0674025a19eee8250f9752b580450086b70ff3b37772079983
+          image: gcr.io/knative-nightly/github.com/projectcontour/contour/cmd/contour@sha256:b3702010f94ed8c63bbaae1049442bde6254134a9858009e2d141186100132c6
           imagePullPolicy: IfNotPresent
           lifecycle:
             preStop:
@@ -2549,7 +2549,7 @@ spec:
             - --envoy-key-file=/certs/tls.key
           command:
             - contour
-          image: gcr.io/knative-nightly/github.com/projectcontour/contour/cmd/contour@sha256:7bf07109c510de0674025a19eee8250f9752b580450086b70ff3b37772079983
+          image: gcr.io/knative-nightly/github.com/projectcontour/contour/cmd/contour@sha256:b3702010f94ed8c63bbaae1049442bde6254134a9858009e2d141186100132c6
           imagePullPolicy: IfNotPresent
           name: envoy-initconfig
           volumeMounts:
diff --git a/third_party/contour-latest/net-contour.yaml b/third_party/contour-latest/net-contour.yaml
index 05e3de127..a3619fd24 100644
--- a/third_party/contour-latest/net-contour.yaml
+++ b/third_party/contour-latest/net-contour.yaml
@@ -33,7 +33,7 @@ metadata:
   namespace: knative-serving
   labels:
     networking.knative.dev/ingress-provider: contour
-    serving.knative.dev/release: "v20210203-a3a8d469"
+    serving.knative.dev/release: "v20210208-0e8faff1"
 data:
   _example: |
     ################################
@@ -103,7 +103,7 @@ spec:
         - name: controller
           # This is the Go import path for the binary that is containerized
           # and substituted here.
-          image: gcr.io/knative-nightly/knative.dev/net-contour/cmd/controller@sha256:e36e83a43bd564225c4ddcdfe1c1035d80515e0648bb7d96cedb454fd43ea85f
+          image: gcr.io/knative-nightly/knative.dev/net-contour/cmd/controller@sha256:6b696d5ddc509c159303726deaae1043b2c922c4b38b185b3b02ae8559bcab1c
           resources:
             requests:
               cpu: 40m