Add checking new commit on the 'bump version' and 'deploy' stage

Signed-off-by: Jeonghyuk Park <[email protected]>

Author: chrisparkibm

Jenkinsfile

@@ -75,6 +75,12 @@ def MASTER_BRANCH = "master"
  */
 def GIT_REVISION_LOOKUP = 'git log -n 1 --pretty=format:%h'
 
+/**
+ * Variables to check any new commit since the previous successful commit
+ */
+def GIT_COMMIT = "null"
+def GIT_PREVIOUS_SUCCESSFUL_COMMIT = "null"
+
 /**
  * This is the product name used by the build machine to store information about
  * the builds
@@ -130,8 +136,13 @@ pipeline {
         stage("Clean workspace and checkout source") {
             steps {
                 timeout(time: 5, unit: 'MINUTES') {
-                    cleanWs()
-                    checkout scm
+                    script {
+                        cleanWs()
+                        scmInfo = checkout scm
+
+                        GIT_COMMIT = scmInfo.GIT_COMMIT
+                        GIT_PREVIOUS_SUCCESSFUL_COMMIT = scmInfo.GIT_PREVIOUS_SUCCESSFUL_COMMIT
+                    }
                 }
             }
         } 
@@ -542,6 +553,9 @@ pipeline {
                     expression {
                         return BRANCH_NAME == MASTER_BRANCH
                     }
+                    expression {
+                        return GIT_COMMIT != GIT_PREVIOUS_SUCCESSFUL_COMMIT
+                    }
                 }
             }
             steps {
@@ -591,7 +605,10 @@ pipeline {
                         return PIPELINE_CONTROL.deploy
                     }
                     expression {
-                       return BRANCH_NAME == MASTER_BRANCH
+                        return BRANCH_NAME == MASTER_BRANCH
+                    }
+                    expression {
+                        return GIT_COMMIT != GIT_PREVIOUS_SUCCESSFUL_COMMIT
                     }
                 }
             }
@@ -622,7 +639,6 @@ pipeline {
                 }
             }
         }
-        
     }
     post {
         unsuccessful {