Automate release process for example-hostname

buildscripts/kokoro/linux_artifacts.cfg

@@ -6,6 +6,7 @@ timeout_mins: 60
 
 action {
   define_artifacts {
-    regex: ["**/mvn-artifacts/**"]
+    regex: "github/grpc-java/mvn-artifacts/**"
+    regex: "github/grpc-java/artifacts/**"
   }
 }

buildscripts/kokoro/macos.cfg

@@ -15,6 +15,6 @@ env_vars {
 # We always build mvn artifacts.
 action {
   define_artifacts {
-    regex: ["**/mvn-artifacts/**"]
+    regex: "github/grpc-java/mvn-artifacts/**"
   }
 }

buildscripts/kokoro/unix.sh

@@ -88,8 +88,16 @@ if [[ -z "${ALL_ARTIFACTS:-}" ]]; then
   ./gradlew grpc-compiler:build grpc-compiler:publish $GRADLE_FLAGS \
     -Dorg.gradle.parallel=false -PrepositoryDir=$LOCAL_MVN_TEMP
 else
-  ./gradlew publish $GRADLE_FLAGS \
+  ./gradlew publish :grpc-core:versionFile $GRADLE_FLAGS \
     -Dorg.gradle.parallel=false -PrepositoryDir=$LOCAL_MVN_TEMP
+  pushd examples/example-hostname
+  ../gradlew jibBuildTar $GRADLE_FLAGS
+  popd
+
+  readonly OTHER_ARTIFACT_DIR="${OTHER_ARTIFACT_DIR:-$GRPC_JAVA_DIR/artifacts}"
+  mkdir -p "$OTHER_ARTIFACT_DIR"
+  cp core/build/version "$OTHER_ARTIFACT_DIR"/
+  cp examples/example-hostname/build/example-hostname.* "$OTHER_ARTIFACT_DIR"/
 fi
 
 readonly MVN_ARTIFACT_DIR="${MVN_ARTIFACT_DIR:-$GRPC_JAVA_DIR/mvn-artifacts}"

buildscripts/kokoro/upload_artifacts.sh

@@ -12,6 +12,7 @@ find "$KOKORO_GFILE_DIR"
 
 # The output from all the jobs are coalesced into a single dir
 LOCAL_MVN_ARTIFACTS="$KOKORO_GFILE_DIR"/github/grpc-java/mvn-artifacts/
+LOCAL_OTHER_ARTIFACTS="$KOKORO_GFILE_DIR"/github/grpc-java/artifacts/
 
 # verify that files from all 3 grouped jobs are present.
 # platform independent artifacts, from linux job:
@@ -45,6 +46,9 @@ mkdir -p ~/java_signing/
 gsutil cp -r gs://grpc-testing-secrets/java_signing/ ~/
 gpg --batch  --import ~/java_signing/grpc-java-team-sonatype.asc
 
+gsutil cat gs://grpc-testing-secrets/dockerhub_credentials/grpcpackages.password \
+  | docker login --username grpcpackages --password-stdin
+
 # gpg commands changed between v1 and v2 are different.
 gpg --version
 
@@ -65,5 +69,19 @@ if gpg --version | grep 'gpg (GnuPG) 2.'; then
     --detach-sign -a {} \;
 fi
 
+# Just the numbers; does not include leading 'v'
+VERSION="$(cat $LOCAL_OTHER_ARTIFACTS/version)"
+EXAMPLE_HOSTNAME_ID="$(cat "$LOCAL_OTHER_ARTIFACTS/example-hostname.id")"
+docker load --input "$LOCAL_OTHER_ARTIFACTS/example-hostname.tar"
+LATEST_VERSION="$((echo "v$VERSION"; git ls-remote -t https://github.com/grpc/grpc-java.git | cut -f 2 | sed s#refs/tags/##) | sort -V | tail -n 1)"
+
+
 STAGING_REPO=a93898609ef848
 "$GRPC_JAVA_DIR"/buildscripts/sonatype-upload.sh "$STAGING_REPO" "$LOCAL_MVN_ARTIFACTS"
+
+docker tag "$EXAMPLE_HOSTNAME_ID" "grpc/java-example-hostname:${VERSION}"
+docker push "grpc/java-example-hostname:${VERSION}"
+if [[ "$VERSION" = "$LATEST_VERSION" ]]; then
+  docker tag "$EXAMPLE_HOSTNAME_ID" grpc/java-example-hostname:latest
+  docker push grpc/java-example-hostname:latest
+fi

buildscripts/kokoro/windows.cfg

@@ -7,6 +7,7 @@ timeout_mins: 45
 # We always build mvn artifacts.
 action {
   define_artifacts {
-    regex: ["**/build/test-results/**/*.xml", "**/mvn-artifacts/**"]
+    regex: "**/build/test-results/**/*.xml"
+    regex: "github/grpc-java/mvn-artifacts/**"
   }
 }

core/build.gradle

@@ -56,3 +56,9 @@ plugins.withId("java") {
         options.errorprone.check("UnnecessaryAnonymousClass", CheckSeverity.OFF)
     }
 }
+
+task versionFile() {
+    doLast {
+        new File(buildDir, "version").write("${project.version}\n")
+    }
+}

examples/example-hostname/build.gradle

@@ -3,6 +3,7 @@ plugins {
     id 'java'
 
     id "com.google.protobuf" version "0.8.10"
+    id 'com.google.cloud.tools.jib' version '2.1.0' // For releasing to Docker Hub
 }
 
 repositories {
@@ -52,3 +53,13 @@ protobuf {
 
 applicationName = 'hostname-server'
 mainClassName = 'io.grpc.examples.hostname.HostnameServer'
+
+// For releasing to Docker Hub
+jib {
+  container.ports = ['50051']
+  outputPaths {
+    tar = 'build/example-hostname.tar'
+    digest = 'build/example-hostname.digest'
+    imageId = 'build/example-hostname.id'
+  }
+}