Repository: Azure/WALinuxAgent (python)

Issue:
Host plugin fallback should be sticky
If we detect the connection to storage is not available, we should keep this state and continue using the host plugin. 

Pull request description:
NSG improvements
- ensure use of host plugin channel is sticky
- additional logging
- unit test updates
- fixes #630 

/cc @brendandixon @jinhyunr 

Patch:
diff --git a/azurelinuxagent/common/osutil/factory.py b/azurelinuxagent/common/osutil/factory.py
index acd7f6ed..eee9f97a 100644
--- a/azurelinuxagent/common/osutil/factory.py
+++ b/azurelinuxagent/common/osutil/factory.py
@@ -76,6 +76,9 @@ def get_osutil(distro_name=DISTRO_NAME,
         else:
             return RedhatOSUtil()
 
+    elif distro_name == "euleros":
+        return RedhatOSUtil()
+
     elif distro_name == "freebsd":
         return FreeBSDOSUtil()
 
diff --git a/azurelinuxagent/common/protocol/hostplugin.py b/azurelinuxagent/common/protocol/hostplugin.py
index f4ece298..d76326d4 100644
--- a/azurelinuxagent/common/protocol/hostplugin.py
+++ b/azurelinuxagent/common/protocol/hostplugin.py
@@ -38,6 +38,8 @@ MAXIMUM_PAGEBLOB_PAGE_SIZE = 4 * 1024 * 1024  # Max page size: 4MB
 
 
 class HostPluginProtocol(object):
+    _is_default_channel = False
+
     def __init__(self, endpoint, container_id, role_config_name):
         if endpoint is None:
             raise ProtocolError("HostGAPlugin: Endpoint not provided")
@@ -50,6 +52,14 @@ class HostPluginProtocol(object):
         self.role_config_name = role_config_name
         self.manifest_uri = None
 
+    @staticmethod
+    def is_default_channel():
+        return HostPluginProtocol._is_default_channel
+
+    @staticmethod
+    def set_default_channel(is_default):
+        HostPluginProtocol._is_default_channel = is_default
+
     def ensure_initialized(self):
         if not self.is_initialized:
             self.api_versions = self.get_api_versions()
@@ -74,7 +84,7 @@ class HostPluginProtocol(object):
             if response.status != httpclient.OK:
                 logger.error(
                     "HostGAPlugin: Failed Get API versions: {0}".format(
-                        self._read_response_error(response)))
+                        self.read_response_error(response)))
             else:
                 return_val = ustr(remove_bom(response.read()), encoding='utf-8')
 
@@ -165,7 +175,7 @@ class HostPluginProtocol(object):
 
         except Exception as e:
             logger.error("HostGAPlugin: Exception Put VM status: {0}", e)
-    
+
     def _put_block_blob_status(self, sas_url, status_blob):
         url = URI_FORMAT_PUT_VM_STATUS.format(self.endpoint, HOST_PLUGIN_PORT)
 
@@ -178,7 +188,7 @@ class HostPluginProtocol(object):
 
         if response.status != httpclient.OK:
             raise HttpError("HostGAPlugin: Put BlockBlob failed: {0}".format(
-                self._read_response_error(response)))
+                self.read_response_error(response)))
         else:
             logger.verbose("HostGAPlugin: Put BlockBlob status succeeded")
 
@@ -200,7 +210,7 @@ class HostPluginProtocol(object):
         if response.status != httpclient.OK:
             raise HttpError(
                 "HostGAPlugin: Failed PageBlob clean-up: {0}".format(
-                    self._read_response_error(response)))
+                    self.read_response_error(response)))
         else:
             logger.verbose("HostGAPlugin: PageBlob clean-up succeeded")
         
@@ -231,7 +241,7 @@ class HostPluginProtocol(object):
                 raise HttpError(
                     "HostGAPlugin Error: Put PageBlob bytes [{0},{1}]: " \
                     "{2}".format(
-                        start, end, self._read_response_error(response)))
+                        start, end, self.read_response_error(response)))
 
             # Advance to the next page (if any)
             start = end
@@ -266,9 +276,12 @@ class HostPluginProtocol(object):
             return s.decode('utf-8')
         return s
     
-    def _read_response_error(self, response):
+    @staticmethod
+    def read_response_error(response):
+        if response is None:
+            return ''
         body = remove_bom(response.read())
-        if PY_VERSION_MAJOR < 3:
+        if PY_VERSION_MAJOR < 3 and body is not None:
             body = ustr(body, encoding='utf-8')
         return "{0}, {1}, {2}".format(
             response.status,
diff --git a/azurelinuxagent/common/protocol/wire.py b/azurelinuxagent/common/protocol/wire.py
index db343909..051dfa1b 100644
--- a/azurelinuxagent/common/protocol/wire.py
+++ b/azurelinuxagent/common/protocol/wire.py
@@ -370,11 +370,14 @@ class StatusBlob(object):
 
     __storage_version__ = "2014-02-14"
 
+    def prepare(self, blob_type):
+        logger.verbose("Prepare status blob")
+        self.data = self.to_json()
+        self.type = blob_type
+
     def upload(self, url):
         # TODO upload extension only if content has changed
-        logger.verbose("Upload status blob")
         upload_successful = False
-        self.data = self.to_json()
         self.type = self.get_blob_type(url)
         try:
             if self.type == "BlockBlob":
@@ -635,9 +638,14 @@ class WireClient(object):
     def fetch_manifest(self, version_uris):
         logger.verbose("Fetch manifest")
         for version in version_uris:
-            response = self.fetch(version.uri)
+            response = None
+            if not HostPluginProtocol.is_default_channel():
+                response = self.fetch(version.uri)
             if not response:
-                logger.verbose("Manifest could not be downloaded, falling back to host plugin")
+                if HostPluginProtocol.is_default_channel():
+                    logger.verbose("Using host plugin as default channel")
+                else:
+                    logger.verbose("Manifest could not be downloaded, falling back to host plugin")
                 host = self.get_host_plugin()
                 uri, headers = host.get_artifact_request(version.uri)
                 response = self.fetch(uri, headers)
@@ -649,6 +657,9 @@ class WireClient(object):
                 else:
                     host.manifest_uri = version.uri
                     logger.verbose("Manifest downloaded successfully from host plugin")
+                    if not HostPluginProtocol.is_default_channel():
+                        logger.info("Setting host plugin as default channel")
+                        HostPluginProtocol.set_default_channel(True)
             if response:
                 return response
         raise ProtocolError("Failed to fetch manifest from all sources")
@@ -664,12 +675,11 @@ class WireClient(object):
             if resp.status == httpclient.OK:
                 return_value = self.decode_config(resp.read())
             else:
-                logger.warn("Could not fetch {0} [{1}: {2}]",
+                logger.warn("Could not fetch {0} [{1}]",
                             uri,
-                            resp.status,
-                            resp.reason)
+                            HostPluginProtocol.read_response_error(resp))
         except (HttpError, ProtocolError) as e:
-            logger.verbose("Fetch failed from [{0}]", uri)
+            logger.verbose("Fetch failed from [{0}]: {1}", uri, e)
         return return_value
 
     def update_hosting_env(self, goal_state):
@@ -840,10 +850,12 @@ class WireClient(object):
         if ext_conf.status_upload_blob is not None:
             uploaded = False
             try:
-                uploaded = self.status_blob.upload(ext_conf.status_upload_blob)
-                self.report_blob_type(self.status_blob.type,
-                                      ext_conf.status_upload_blob_type)
-            except (HttpError, ProtocolError) as e:
+                self.status_blob.prepare(ext_conf.status_upload_blob_type)
+                if not HostPluginProtocol.is_default_channel():
+                    uploaded = self.status_blob.upload(ext_conf.status_upload_blob)
+                    self.report_blob_type(self.status_blob.type,
+                                          ext_conf.status_upload_blob_type)
+            except (HttpError, ProtocolError):
                 # errors have already been logged
                 pass
             if not uploaded:
@@ -851,6 +863,9 @@ class WireClient(object):
                 host.put_vm_status(self.status_blob,
                                    ext_conf.status_upload_blob,
                                    ext_conf.status_upload_blob_type)
+                if not HostPluginProtocol.is_default_channel():
+                    logger.info("Setting host plugin as default channel")
+                    HostPluginProtocol.set_default_channel(True)
 
     """
     Emit an event to determine if the type in the extension config
diff --git a/azurelinuxagent/common/utils/restutil.py b/azurelinuxagent/common/utils/restutil.py
index 71973705..49d2d68f 100644
--- a/azurelinuxagent/common/utils/restutil.py
+++ b/azurelinuxagent/common/utils/restutil.py
@@ -28,7 +28,7 @@ from azurelinuxagent.common.future import httpclient, urlparse
 REST api util functions
 """
 
-RETRY_WAITING_INTERVAL = 10
+RETRY_WAITING_INTERVAL = 3
 secure_warning = True
 
 
diff --git a/azurelinuxagent/common/version.py b/azurelinuxagent/common/version.py
index 0e3818aa..8ee2c18f 100644
--- a/azurelinuxagent/common/version.py
+++ b/azurelinuxagent/common/version.py
@@ -76,6 +76,9 @@ def get_distro():
         osinfo[2] = "oracle"
         osinfo[3] = "Oracle Linux"
 
+    if os.path.exists("/etc/euleros-release"):
+        osinfo[0] = "euleros"
+
     # The platform.py lib has issue with detecting BIG-IP linux distribution.
     # Merge the following patch provided by F5.
     if os.path.exists("/shared/vadc"):
diff --git a/azurelinuxagent/daemon/resourcedisk/default.py b/azurelinuxagent/daemon/resourcedisk/default.py
index 21de38f0..2b116fb1 100644
--- a/azurelinuxagent/daemon/resourcedisk/default.py
+++ b/azurelinuxagent/daemon/resourcedisk/default.py
@@ -85,6 +85,11 @@ class ResourceDiskHandler(object):
         except ResourceDiskError as e:
             logger.error("Failed to enable swap {0}", e)
 
+    def reread_partition_table(self, device):
+        if shellutil.run("sfdisk -R {0}".format(device), chk_err=False):
+            shellutil.run("blockdev --rereadpt {0}".format(device),
+                          chk_err=False)
+
     def mount_resource_disk(self, mount_point):
         device = self.osutil.device_for_ide_port(1)
         if device is None:
@@ -138,12 +143,13 @@ class ResourceDiskHandler(object):
                 shellutil.run(mkfs_string)
         else:
             logger.info("GPT not detected, determining filesystem")
-            ret = self.change_partition_type(suppress_message=True, option_str="{0} 1".format(device))
+            ret = self.change_partition_type(suppress_message=True, option_str="{0} 1 -n".format(device))
             ptype = ret[1].strip()
             if ptype == "7" and self.fs != "ntfs":
                 logger.info("The partition is formatted with ntfs, updating "
                             "partition type to 83")
                 self.change_partition_type(suppress_message=False, option_str="{0} 1 83".format(device))
+                self.reread_partition_table(device)
                 logger.info("Format partition [{0}]", mkfs_string)
                 shellutil.run(mkfs_string)
             else:
@@ -166,8 +172,8 @@ class ResourceDiskHandler(object):
 
         logger.info("Mount resource disk [{0}]", mount_string)
         ret, output = shellutil.run_get_output(mount_string, chk_err=False)
-        # if the exit code is 32, then the resource disk is already mounted
-        if ret == 32:
+        # if the exit code is 32, then the resource disk can be already mounted
+        if ret == 32 and output.find("is already mounted") != -1:
             logger.warn("Could not mount resource disk: {0}", output)
         elif ret != 0:
             # Some kernels seem to issue an async partition re-read after a
@@ -178,9 +184,7 @@ class ResourceDiskHandler(object):
             logger.warn("Failed to mount resource disk. "
                         "Retry mounting after re-reading partition info.")
 
-            if shellutil.run("sfdisk -R {0}".format(device), chk_err=False):
-                shellutil.run("blockdev --rereadpt {0}".format(device),
-                              chk_err=False)
+            self.reread_partition_table(device)
 
             ret, output = shellutil.run_get_output(mount_string)
             if ret:
diff --git a/azurelinuxagent/ga/update.py b/azurelinuxagent/ga/update.py
index 59bc70c5..a5cbfdbf 100644
--- a/azurelinuxagent/ga/update.py
+++ b/azurelinuxagent/ga/update.py
@@ -40,6 +40,7 @@ from azurelinuxagent.common.exception import UpdateError, ProtocolError
 from azurelinuxagent.common.future import ustr
 from azurelinuxagent.common.osutil import get_osutil
 from azurelinuxagent.common.protocol import get_protocol_util
+from azurelinuxagent.common.protocol.hostplugin import HostPluginProtocol
 from azurelinuxagent.common.utils.flexible_version import FlexibleVersion
 from azurelinuxagent.common.version import AGENT_NAME, AGENT_VERSION, AGENT_LONG_VERSION, \
                                             AGENT_DIR_GLOB, AGENT_PKG_GLOB, \
@@ -49,7 +50,6 @@ from azurelinuxagent.common.version import AGENT_NAME, AGENT_VERSION, AGENT_LONG
 
 from azurelinuxagent.ga.exthandlers import HandlerManifest
 
-
 AGENT_ERROR_FILE = "error.json" # File name for agent error record
 AGENT_MANIFEST_FILE = "HandlerManifest.json"
 
@@ -698,18 +698,26 @@ class GuestAgent(object):
 
     def _download(self):
         for uri in self.pkg.uris:
-            if self._fetch(uri.uri):
+            if not HostPluginProtocol.is_default_channel() and self._fetch(uri.uri):
                 break
-            else:
-                if self.host is not None and self.host.ensure_initialized():
+            elif self.host is not None and self.host.ensure_initialized():
+                if not HostPluginProtocol.is_default_channel():
                     logger.warn("Download unsuccessful, falling back to host plugin")
-                    uri, headers = self.host.get_artifact_request(uri.uri, self.host.manifest_uri)
-                    if uri is not None \
-                            and headers is not None \
-                            and self._fetch(uri, headers=headers):
-                        break
                 else:
-                    logger.warn("Download unsuccessful, host plugin not available")
+                    logger.verbose("Using host plugin as default channel")
+
+                uri, headers = self.host.get_artifact_request(uri.uri, self.host.manifest_uri)
+                if uri is not None \
+                        and headers is not None \
+                        and self._fetch(uri, headers=headers):
+                    if not HostPluginProtocol.is_default_channel():
+                        logger.verbose("Setting host plugin as default channel")
+                        HostPluginProtocol.set_default_channel(True)
+                    break
+                else:
+                    logger.warn("Host plugin download unsuccessful")
+            else:
+                logger.error("No download channels available")
 
         if not os.path.isfile(self.get_agent_pkg_path()):
             msg = u"Unable to download Agent {0} from any URI".format(self.name)
@@ -732,6 +740,9 @@ class GuestAgent(object):
                                     bytearray(package),
                                     asbin=True)
                 logger.info(u"Agent {0} downloaded from {1}", self.name, uri)
+            else:
+                logger.verbose("Fetch was unsuccessful [{0}]",
+                               HostPluginProtocol.read_response_error(resp))
         except restutil.HttpError as http_error:
             logger.verbose(u"Agent {0} download from {1} failed [{2}]",
                            self.name,
diff --git a/azurelinuxagent/pa/rdma/centos.py b/azurelinuxagent/pa/rdma/centos.py
index 214f9ead..942d225f 100644
--- a/azurelinuxagent/pa/rdma/centos.py
+++ b/azurelinuxagent/pa/rdma/centos.py
@@ -82,7 +82,7 @@ class CentOSRDMAHandler(RDMAHandler):
         # Example match (pkg name, -, followed by 3 segments, fw_version and -):
         # - pkg=microsoft-hyper-v-rdma-4.1.0.142-20160323.x86_64
         # - fw_version=142
-        pattern = '{0}-\d\.\d\.\d\.({1})-'.format(
+        pattern = '{0}-(\d+\.){3,}({1})-'.format(
             self.rdma_user_mode_package_name, fw_version)
         return re.match(pattern, pkg)
 
@@ -156,7 +156,7 @@ class CentOSRDMAHandler(RDMAHandler):
 
         # Install kernel mode driver (kmod-microsoft-hyper-v-rdma-*)
         kmod_pkg = self.get_file_by_pattern(
-            pkgs, "%s-\d\.\d\.\d\.+(%s)-\d{8}\.x86_64.rpm" % (self.rdma_kernel_mode_package_name, fw_version))
+            pkgs, "%s-(\d+\.){3,}(%s)-\d{8}\.x86_64.rpm" % (self.rdma_kernel_mode_package_name, fw_version))
         if not kmod_pkg:
             raise Exception("RDMA kernel mode package not found")
         kmod_pkg_path = os.path.join(pkg_dir, kmod_pkg)
@@ -165,7 +165,7 @@ class CentOSRDMAHandler(RDMAHandler):
 
         # Install user mode driver (microsoft-hyper-v-rdma-*)
         umod_pkg = self.get_file_by_pattern(
-            pkgs, "%s-\d\.\d\.\d\.+(%s)-\d{8}\.x86_64.rpm" % (self.rdma_user_mode_package_name, fw_version))
+            pkgs, "%s-(\d+\.){3,}(%s)-\d{8}\.x86_64.rpm" % (self.rdma_user_mode_package_name, fw_version))
         if not umod_pkg:
             raise Exception("RDMA user mode package not found")
         umod_pkg_path = os.path.join(pkg_dir, umod_pkg)
diff --git a/bin/waagent2.0 b/bin/waagent2.0
index 80af1c73..1a72ba73 100644
--- a/bin/waagent2.0
+++ b/bin/waagent2.0
@@ -1093,6 +1093,18 @@ class centosDistro(redhatDistro):
     def __init__(self):
         super(centosDistro,self).__init__()
 
+############################################################    
+#   eulerosDistro
+############################################################    
+
+class eulerosDistro(redhatDistro):
+    """
+    EulerOS Distro concrete class
+    Put EulerOS specific behavior here...
+    """
+    def __init__(self):
+        super(eulerosDistro,self).__init__()
+
 ############################################################    
 #	oracleDistro
 ############################################################    
@@ -6016,6 +6028,8 @@ def DistInfo(fullname=0):
     if 'linux_distribution' in dir(platform):
         distinfo = list(platform.linux_distribution(full_distribution_name=fullname))
         distinfo[0] = distinfo[0].strip() # remove trailing whitespace in distro name
+        if os.path.exists("/etc/euleros-release"):
+            distinfo[0] = "euleros"
         return distinfo
     else:
         return platform.dist()
diff --git a/config/66-azure-storage.rules b/config/66-azure-storage.rules
index ab306288..5b2b799f 100644
--- a/config/66-azure-storage.rules
+++ b/config/66-azure-storage.rules
@@ -1,12 +1,22 @@
-ACTION!="add|change", GOTO="azure_end"
-SUBSYSTEM!="block", GOTO="azure_end"
-ATTRS{ID_VENDOR}!="Msft", GOTO="azure_end"
-ATTRS{ID_MODEL}!="Virtual_Disk", GOTO="azure_end"
+ACTION=="add|change", SUBSYSTEM=="block", ENV{ID_VENDOR}=="Msft", ENV{ID_MODEL}=="Virtual_Disk", GOTO="azure_disk"
+GOTO="azure_end"
 
+LABEL="azure_disk"
 # Root has a GUID of 0000 as the second value
 # The resource/resource has GUID of 0001 as the second value
 ATTRS{device_id}=="?00000000-0000-*", ENV{fabric_name}="root", GOTO="azure_names"
 ATTRS{device_id}=="?00000000-0001-*", ENV{fabric_name}="resource", GOTO="azure_names"
+# Wellknown SCSI controllers
+ATTRS{device_id}=="{f8b3781a-1e82-4818-a1c3-63d806ec15bb}", ENV{fabric_scsi_controller}="scsi0", GOTO="azure_datadisk"
+ATTRS{device_id}=="{f8b3781b-1e82-4818-a1c3-63d806ec15bb}", ENV{fabric_scsi_controller}="scsi1", GOTO="azure_datadisk"
+ATTRS{device_id}=="{f8b3781c-1e82-4818-a1c3-63d806ec15bb}", ENV{fabric_scsi_controller}="scsi2", GOTO="azure_datadisk"
+ATTRS{device_id}=="{f8b3781d-1e82-4818-a1c3-63d806ec15bb}", ENV{fabric_scsi_controller}="scsi3", GOTO="azure_datadisk"
+GOTO="azure_end"
+
+# Retrieve LUN number for datadisks
+LABEL="azure_datadisk"
+ENV{DEVTYPE}=="partition", PROGRAM="/bin/sh -c 'readlink /sys/class/block/%k/../device|cut -d: -f4'", ENV{fabric_name}="$env{fabric_scsi_controller}/lun$result", GOTO="azure_names"
+PROGRAM="/bin/sh -c 'readlink /sys/class/block/%k/device|cut -d: -f4'", ENV{fabric_name}="$env{fabric_scsi_controller}/lun$result", GOTO="azure_names"
 GOTO="azure_end"
 
 # Create the symlinks
@@ -15,4 +25,3 @@ ENV{DEVTYPE}=="disk", SYMLINK+="disk/azure/$env{fabric_name}"
 ENV{DEVTYPE}=="partition", SYMLINK+="disk/azure/$env{fabric_name}-part%n"
 
 LABEL="azure_end"
-


Test patch:
diff --git a/tests/protocol/test_hostplugin.py b/tests/protocol/test_hostplugin.py
index 078af706..8ebb468c 100644
--- a/tests/protocol/test_hostplugin.py
+++ b/tests/protocol/test_hostplugin.py
@@ -113,21 +113,24 @@ class TestHostPlugin(AgentTestCase):
 
     def test_fallback(self):
         """
-        Validate fallback to upload status using HostGAPlugin is happening when status reporting via
-        default method is unsuccessful
+        Validate fallback to upload status using HostGAPlugin is happening when
+        status reporting via default method is unsuccessful
         """
         test_goal_state = wire.GoalState(WireProtocolData(DATA_FILE).goal_state)
-
+        status = restapi.VMStatus(status="Ready", message="Guest Agent is running")
         with patch.object(wire.HostPluginProtocol, "put_vm_status") as patch_put:
             with patch.object(wire.StatusBlob, "upload", return_value=False) as patch_upload:
                 wire_protocol_client = wire.WireProtocol(wireserver_url).client
                 wire_protocol_client.get_goal_state = Mock(return_value=test_goal_state)
                 wire_protocol_client.ext_conf = wire.ExtensionsConfig(None)
                 wire_protocol_client.ext_conf.status_upload_blob = sas_url
+                wire_protocol_client.status_blob.set_vm_status(status)
                 wire_protocol_client.upload_status_blob()
                 self.assertTrue(patch_put.call_count == 1,
                                 "Fallback was not engaged")
                 self.assertTrue(patch_put.call_args[0][1] == sas_url)
+                self.assertTrue(wire.HostPluginProtocol.is_default_channel())
+                wire.HostPluginProtocol.set_default_channel(False)
 
     def test_validate_http_request(self):
         """Validate correct set of data is sent to HostGAPlugin when reporting VM status"""
@@ -161,19 +164,19 @@ class TestHostPlugin(AgentTestCase):
 
     def test_no_fallback(self):
         """
-        Validate fallback to upload status using HostGAPlugin is not happening when status reporting via
-        default method is successful
+        Validate fallback to upload status using HostGAPlugin is not happening
+        when status reporting via default method is successful
         """
-        with patch.object(wire.HostPluginProtocol,
-                          "put_vm_status") as patch_put:
+        vmstatus = restapi.VMStatus(message="Ready", status="Ready")
+        with patch.object(wire.HostPluginProtocol, "put_vm_status") as patch_put:
             with patch.object(wire.StatusBlob, "upload") as patch_upload:
                 patch_upload.return_value = True
                 wire_protocol_client = wire.WireProtocol(wireserver_url).client
                 wire_protocol_client.ext_conf = wire.ExtensionsConfig(None)
                 wire_protocol_client.ext_conf.status_upload_blob = sas_url
+                wire_protocol_client.status_blob.vm_status = vmstatus
                 wire_protocol_client.upload_status_blob()
-                self.assertTrue(patch_put.call_count == 0,
-                                "Fallback was engaged")
+                self.assertTrue(patch_put.call_count == 0, "Fallback was engaged")
 
     def test_validate_block_blob(self):
         """Validate correct set of data is sent to HostGAPlugin when reporting VM status"""
diff --git a/tests/protocol/test_wire.py b/tests/protocol/test_wire.py
index e083678b..e36fc652 100644
--- a/tests/protocol/test_wire.py
+++ b/tests/protocol/test_wire.py
@@ -148,13 +148,15 @@ class TestWireProtocolGetters(AgentTestCase):
                                      host_uri)
 
     def test_upload_status_blob_default(self, *args):
+        vmstatus = VMStatus(message="Ready", status="Ready")
         wire_protocol_client = WireProtocol(wireserver_url).client
         wire_protocol_client.ext_conf = ExtensionsConfig(None)
         wire_protocol_client.ext_conf.status_upload_blob = testurl
+        wire_protocol_client.status_blob.vm_status = vmstatus
 
         with patch.object(WireClient, "get_goal_state") as patch_get_goal_state:
             with patch.object(HostPluginProtocol, "put_vm_status") as patch_host_ga_plugin_upload:
-                with patch.object(StatusBlob, "upload", return_value = True) as patch_default_upload:
+                with patch.object(StatusBlob, "upload", return_value=True) as patch_default_upload:
                     wire_protocol_client.upload_status_blob()
 
                     patch_default_upload.assert_called_once_with(testurl)
@@ -162,20 +164,24 @@ class TestWireProtocolGetters(AgentTestCase):
                     patch_host_ga_plugin_upload.assert_not_called()
 
     def test_upload_status_blob_host_ga_plugin(self, *args):
+        vmstatus = VMStatus(message="Ready", status="Ready")
         wire_protocol_client = WireProtocol(wireserver_url).client
         wire_protocol_client.ext_conf = ExtensionsConfig(None)
         wire_protocol_client.ext_conf.status_upload_blob = testurl
         wire_protocol_client.ext_conf.status_upload_blob_type = testtype
+        wire_protocol_client.status_blob.vm_status = vmstatus
         goal_state = GoalState(WireProtocolData(DATA_FILE).goal_state)
 
         with patch.object(HostPluginProtocol, "put_vm_status") as patch_host_ga_plugin_upload:
             with patch.object(StatusBlob, "upload", return_value=False) as patch_default_upload:
-                wire_protocol_client.get_goal_state = Mock(return_value = goal_state)
+                wire_protocol_client.get_goal_state = Mock(return_value=goal_state)
                 wire_protocol_client.upload_status_blob()
 
                 patch_default_upload.assert_called_once_with(testurl)
                 wire_protocol_client.get_goal_state.assert_called_once()
                 patch_host_ga_plugin_upload.assert_called_once_with(wire_protocol_client.status_blob, testurl, testtype)
+                self.assertTrue(HostPluginProtocol.is_default_channel())
+                HostPluginProtocol.set_default_channel(False)
 
     def test_get_in_vm_artifacts_profile_blob_not_available(self, *args):
         wire_protocol_client = WireProtocol(wireserver_url).client