Chapter 14. Using a sink binding with Service Mesh You can use a sink binding with Service Mesh. 14.1. Configuring a sink binding with Service Mesh This procedure describes how to configure a sink binding with Service Mesh. Prerequisites You have set up integration of Service Mesh and Serverless. Procedure Create a Service object in a namespace that is member of the ServiceMeshMemberRoll : Example event-display-service.yaml configuration file apiVersion: serving.knative.dev/v1 kind: Service metadata: name: event-display namespace: <namespace> 1 spec: template: metadata: annotations: sidecar.istio.io/inject: "true" 2 sidecar.istio.io/rewriteAppHTTPProbers: "true" spec: containers: - image: quay.io/openshift-knative/knative-eventing-sources-event-display:latest 1 A namespace that is a member of the ServiceMeshMemberRoll . 2 This annotation injects Service Mesh sidecars into the Knative service pods. Apply the Service object: USD oc apply -f event-display-service.yaml Create a SinkBinding object: Example heartbeat-sinkbinding.yaml configuration file apiVersion: sources.knative.dev/v1alpha1 kind: SinkBinding metadata: name: bind-heartbeat namespace: <namespace> 1 spec: subject: apiVersion: batch/v1 kind: Job 2 selector: matchLabels: app: heartbeat-cron sink: ref: apiVersion: serving.knative.dev/v1 kind: Service name: event-display 1 A namespace that is part of the ServiceMeshMemberRoll . 2 Bind any Job with the label app: heartbeat-cron to the event sink. Apply the SinkBinding object: USD oc apply -f heartbeat-sinkbinding.yaml Create a CronJob object: Example heartbeat-cronjob.yaml configuration file apiVersion: batch/v1 kind: CronJob metadata: name: heartbeat-cron namespace: <namespace> 1 spec: # Run every minute schedule: "* * * * *" jobTemplate: metadata: labels: app: heartbeat-cron bindings.knative.dev/include: "true" spec: template: metadata: annotations: sidecar.istio.io/inject: "true" 2 sidecar.istio.io/rewriteAppHTTPProbers: "true" spec: restartPolicy: Never containers: - name: single-heartbeat image: quay.io/openshift-knative/heartbeats:latest args: - --period=1 env: - name: ONE_SHOT value: "true" - name: POD_NAME valueFrom: fieldRef: fieldPath: metadata.name - name: POD_NAMESPACE valueFrom: fieldRef: fieldPath: metadata.namespace 1 A namespace that is part of the ServiceMeshMemberRoll . 2 Inject Service Mesh sidecars into the CronJob pods. Apply the CronJob object: USD oc apply -f heartbeat-cronjob.yaml Optional: Verify that the events were sent to the Knative event sink by looking at the message dumper function logs: Example command USD oc logs USD(oc get pod -o name | grep event-display) -c user-container Example output ☁\ufe0f cloudevents.Event Validation: valid Context Attributes, specversion: 1.0 type: dev.knative.eventing.samples.heartbeat source: https://knative.dev/eventing-contrib/cmd/heartbeats/#event-test/mypod id: 2b72d7bf-c38f-4a98-a433-608fbcdd2596 time: 2019-10-18T15:23:20.809775386Z contenttype: application/json Extensions, beats: true heart: yes the: 42 Data, { "id": 1, "label": "" }

Commands:
apiVersion: serving.knative.dev/v1 kind: Service metadata: name: event-display namespace: <namespace> 1 spec: template: metadata: annotations: sidecar.istio.io/inject: "true" 2 sidecar.istio.io/rewriteAppHTTPProbers: "true" spec: containers: - image: quay.io/openshift-knative/knative-eventing-sources-event-display:latest
oc apply -f event-display-service.yaml
apiVersion: sources.knative.dev/v1alpha1 kind: SinkBinding metadata: name: bind-heartbeat namespace: <namespace> 1 spec: subject: apiVersion: batch/v1 kind: Job 2 selector: matchLabels: app: heartbeat-cron sink: ref: apiVersion: serving.knative.dev/v1 kind: Service name: event-display
oc apply -f heartbeat-sinkbinding.yaml
apiVersion: batch/v1 kind: CronJob metadata: name: heartbeat-cron namespace: <namespace> 1 spec: # Run every minute schedule: "* * * * *" jobTemplate: metadata: labels: app: heartbeat-cron bindings.knative.dev/include: "true" spec: template: metadata: annotations: sidecar.istio.io/inject: "true" 2 sidecar.istio.io/rewriteAppHTTPProbers: "true" spec: restartPolicy: Never containers: - name: single-heartbeat image: quay.io/openshift-knative/heartbeats:latest args: - --period=1 env: - name: ONE_SHOT value: "true" - name: POD_NAME valueFrom: fieldRef: fieldPath: metadata.name - name: POD_NAMESPACE valueFrom: fieldRef: fieldPath: metadata.namespace
oc apply -f heartbeat-cronjob.yaml
oc logs USD(oc get pod -o name | grep event-display) -c user-container
☁\ufe0f cloudevents.Event Validation: valid Context Attributes, specversion: 1.0 type: dev.knative.eventing.samples.heartbeat source: https://knative.dev/eventing-contrib/cmd/heartbeats/#event-test/mypod id: 2b72d7bf-c38f-4a98-a433-608fbcdd2596 time: 2019-10-18T15:23:20.809775386Z contenttype: application/json Extensions, beats: true heart: yes the: 42 Data, { "id": 1, "label": "" }