Switch to async promotion

Due to timeouts while distributing release artifacts,
this commit uses the async mode for distribution.

Before syncing to maven central, we need to check if all the artifacts
have been published to Bintray. This is done by hitting the Bintray API
till we get the version or until a timeout is reached.

Closes gh-12292

ci/pipeline.yml

@@ -347,12 +347,14 @@ jobs:
       ARTIFACTORY_SERVER: ((artifactory-server))
       ARTIFACTORY_USERNAME: ((artifactory-username))
       ARTIFACTORY_PASSWORD: ((artifactory-password))
+      BINTRAY_SUBJECT: ((bintray-subject))
+      BINTRAY_REPO: ((bintray-repo))
 - name: sync-to-maven-central
   serial: true
   plan:
   - get: spring-boot-ci-image
   - get: git-repo
-    trigger: false
+    trigger: true
   - get: artifactory-repo
     trigger: false
     passed: [promote-release]

ci/scripts/promote.sh

@@ -39,10 +39,30 @@ if [[ $RELEASE_TYPE = "RELEASE" ]]; then
 		--max-time 2700 \
 		-u ${ARTIFACTORY_USERNAME}:${ARTIFACTORY_PASSWORD} \
 		-H "Content-type:application/json" \
-		-d "{\"sourceRepos\": [\"libs-release-local\"], \"targetRepo\" : \"spring-distributions\"}" \
+		-d "{\"sourceRepos\": [\"libs-release-local\"], \"targetRepo\" : \"spring-distributions\", \"async\":\"true\"}" \
 		-f \
 		-X \
-		POST "${ARTIFACTORY_SERVER}/api/build/distribute/${buildName}/${buildNumber}" > /dev/null || { echo "Failed to publish" >&2; exit 1; }
+		POST "${ARTIFACTORY_SERVER}/api/build/distribute/${buildName}/${buildNumber}" > /dev/null || { echo "Failed to distribute" >&2; exit 1; }
+
+	echo "Waiting for artifacts to be published"
+	ARTIFACTS_PUBLISHED=false
+	WAIT_TIME=5
+	COUNTER=0
+	while [ $ARTIFACTS_PUBLISHED == "false" ] && [ $COUNTER -lt 24 ]; do
+		 result=$(curl https://api.bintray.com/packages/${BINTRAY_SUBJECT}/${BINTRAY_REPO}/$groupId )
+		 versions=$( echo $result | jq -r '.versions' )
+		 exists=$(echo $versions | grep $version)
+		 if [ $? -eq 0 ]; then
+			ARTIFACTS_PUBLISHED=true
+		 fi
+		 COUNTER=$(( $COUNTER + 1))
+		 echo $COUNTER
+		 sleep WAIT_TIME
+	done
+	if [ $ARTIFACTS_PUBLISHED == "false" ]; then
+		echo "Failed to publish"
+		exit 1
+	fi
 fi