Staging for version increment automation (opensearch-project#1932)

* Version increment automation

Signed-off-by: pgodithi <pgodithi@amazon.com>

.github/workflows/ci.yml

@@ -125,6 +125,14 @@ jobs:
 
     - run: ./gradlew clean assemble -Dbuild.version_qualifier=${{ env.TEST_QUALIFIER }} && test -s ./build/distributions/opensearch-security-${{ env.SECURITY_PLUGIN_VERSION_ONLY_NUMBER }}-${{ env.TEST_QUALIFIER }}-SNAPSHOT.zip
 
+    - run:  |
+        ## EXISTING_OS_VERSION outputs the major version, example as 2
+        EXISTING_OS_VERSION=$(./gradlew properties | grep opensearch.version | cut -d':' -f2- | awk '{$1=$1};1' | cut -d '-' -f1 | cut -d '.' -f1)
+        ## INCREMENT_OS_VERSION in an increment of 1, example if EXISTING_OS_VERSION is 2, INCREMENT_OS_VERSION is 3
+        INCREMENT_OS_VERSION=$((++EXISTING_OS_VERSION)) 
+        ./gradlew clean updateVersion -DnewVersion=$INCREMENT_OS_VERSION.0.0-SNAPSHOT
+        test `./gradlew properties | grep opensearch.version | cut -d':' -f2- | awk '{$1=$1};1'` = $INCREMENT_OS_VERSION.0.0-SNAPSHOT
+
     - name: List files in the build directory if there was an error
       run: ls -al ./build/distributions/
       if: failure()

build.gradle

@@ -516,3 +516,20 @@ afterEvaluate {
         tasks = ['build', 'buildRpm', 'buildDeb']
     }
 }
+
+// updateVersion: Task to auto increment to the next development iteration
+task updateVersion {
+    onlyIf { System.getProperty('newVersion') }
+    doLast {
+        ext.newVersion = System.getProperty('newVersion')
+        println "Setting version to ${newVersion}."
+        // String tokenization to support -SNAPSHOT
+        ant.replaceregexp(match: opensearch_version.tokenize('-')[0], replace: newVersion.tokenize('-')[0], flags:'g', byline:true) {
+            fileset(dir: projectDir) {
+                // Include the required files that needs to be updated with new Version
+                include(name: "bwc-test/build.gradle")
+            }
+        }
+        ant.replaceregexp(file:'build.gradle', match: '"opensearch.version", "\\d.*"', replace: '"opensearch.version", "' + newVersion.tokenize('-')[0] + '-SNAPSHOT"', flags:'g', byline:true)
+    }
+}