[ci] Use correct branch when downloading artifact. (#2292)

Author: liushilongbuaa

.azure-pipelines/build-docker-sonic-vs-template.yml

@@ -39,7 +39,7 @@ jobs:
       pipeline: 9
       artifact: ${{ parameters.swss_common_artifact_name }}
       runVersion: 'latestFromBranch'
-      runBranch: 'refs/heads/master'
+      runBranch: 'refs/heads/$(BUILD_BRANCH)'
     displayName: "Download sonic swss common deb packages"
   - task: DownloadPipelineArtifact@2
     inputs:
@@ -48,7 +48,7 @@ jobs:
       pipeline: 12
       artifact: ${{ parameters.sairedis_artifact_name }}
       runVersion: 'latestFromBranch'
-      runBranch: 'refs/heads/master'
+      runBranch: 'refs/heads/$(BUILD_BRANCH)'
     displayName: "Download sonic sairedis deb packages"
   - task: DownloadPipelineArtifact@2
     inputs:
@@ -61,13 +61,12 @@ jobs:
       pipeline: 1
       artifact: sonic-buildimage.vs
       runVersion: 'latestFromBranch'
-      runBranch: 'refs/heads/master'
+      runBranch: 'refs/heads/$(BUILD_BRANCH)'
     displayName: "Download sonic buildimage"
   - script: |
       echo $(Build.DefinitionName).$(Build.BuildNumber)
 
       docker load < ../target/docker-sonic-vs.gz
-
       mkdir -p .azure-pipelines/docker-sonic-vs/debs
 
       cp -v ../*.deb .azure-pipelines/docker-sonic-vs/debs

.azure-pipelines/build-template.yml

@@ -54,7 +54,7 @@ jobs:
   pool:
     ${{ if ne(parameters.pool, 'default') }}:
       name: ${{ parameters.pool }}
-    ${{ if eq(parameters.pool, 'default') }}:
+    ${{ else }}:
       vmImage: 'ubuntu-20.04'
 
   container:
@@ -82,7 +82,7 @@ jobs:
       pipeline: 9
       artifact: ${{ parameters.swss_common_artifact_name }}
       runVersion: 'latestFromBranch'
-      runBranch: 'refs/heads/master'
+      runBranch: 'refs/heads/$(BUILD_BRANCH)'
       path: '$(Build.SourcesDirectory)/${{ parameters.swss_common_artifact_name }}'
     displayName: "Download sonic swss common deb packages"
   - task: DownloadPipelineArtifact@2
@@ -92,7 +92,7 @@ jobs:
       pipeline: 12
       artifact: ${{ parameters.sairedis_artifact_name }}
       runVersion: 'latestFromBranch'
-      runBranch: 'refs/heads/master'
+      runBranch: 'refs/heads/$(BUILD_BRANCH)'
       path: '$(Build.SourcesDirectory)/${{ parameters.sairedis_artifact_name }}'
     displayName: "Download sonic sairedis deb packages"
   - task: DownloadPipelineArtifact@2
@@ -104,7 +104,7 @@ jobs:
       pipeline: ${{ parameters.buildimage_pipeline }}
       artifact: ${{ parameters.buildimage_artifact_name }}
       runVersion: 'latestFromBranch'
-      runBranch: 'refs/heads/master'
+      runBranch: 'refs/heads/$(BUILD_BRANCH)'
       path: '$(Build.SourcesDirectory)/${{ parameters.buildimage_artifact_name }}'
     displayName: "Download sonic buildimage deb packages"
   - script: |

.azure-pipelines/test-docker-sonic-vs-template.yml

@@ -40,7 +40,7 @@ jobs:
       pipeline: 9
       artifact: sonic-swss-common.amd64.ubuntu20_04
       runVersion: 'latestFromBranch'
-      runBranch: 'refs/heads/master'
+      runBranch: 'refs/heads/$(BUILD_BRANCH)'
     displayName: "Download sonic swss common deb packages"
 
   - script: |

azure-pipelines.yml

@@ -27,6 +27,13 @@ schedules:
     - 201???
   always: true
 
+variables:
+  - name: BUILD_BRANCH
+    ${{ if eq(variables['Build.Reason'], 'PullRequest') }}:
+      value: $(System.PullRequest.TargetBranch)
+    ${{ else }}:
+      value: $(Build.SourceBranchName)
+
 stages:
 - stage: Build