Add release process to CI

Closes gh-15

Author: philwebb

ci/images/github-release-notes-generator-ci-image/Dockerfile

@@ -1,7 +1,7 @@
 FROM ubuntu:bionic-20181018
 
 RUN apt-get update
-RUN apt-get install --no-install-recommends -y ca-certificates net-tools libxml2-utils git curl
+RUN apt-get install --no-install-recommends -y ca-certificates net-tools libxml2-utils git curl jq
 RUN rm -rf /var/lib/apt/lists/*
 
 ENV JAVA_HOME /opt/openjdk

ci/pipeline.yml

@@ -26,6 +26,12 @@ resources:
     repository: springio/github-release-notes-generator
     username: ((docker-hub-username))
     password: ((docker-hub-password))
+- name: github-release
+  type: github-release
+  source:
+    owner: spring-io
+    repository: github-release-notes-generator
+    access_token: ((github-release-notes-access-token))
 jobs:
 - name: build-github-release-notes-generator-ci-image
   plan:
@@ -48,10 +54,39 @@ jobs:
       build_args:
         root: git-repo
         jar:  built-artifact/github-release-notes-generator.jar
+- name: release
+  plan:
+  - get: git-repo
+    passed: [build]
+    trigger: false
+  - task: release
+    file: git-repo/ci/tasks/release.yml
+    params:
+      GITHUB_USERNAME: ((github-username))
+      GITHUB_TOKEN: ((github-release-notes-access-token))
+  - put: git-repo
+    params:
+      repository: release-git-repo
+  - put: github-release-notes-generator-image
+    params:
+      build: .
+      dockerfile: git-repo/Dockerfile
+      tag: built-artifact/version
+      build_args:
+        root: git-repo
+        jar:  built-artifact/github-release-notes-generator.jar
+  - put: github-release
+    params:
+      name: built-artifact/version
+      tag: built-artifact/version
+      body: built-artifact/release-notes.md
+      globs:
+      - built-artifact/github-release-notes-generator.jar
 groups:
 - name: "Code"
   jobs:
   - build
+  - release
 - name: "CI Images"
   jobs:
   - build-github-release-notes-generator-ci-image

ci/scripts/release.sh

@@ -0,0 +1,35 @@
+#!/bin/bash
+set -e
+
+source $(dirname $0)/common.sh
+
+git clone git-repo release-git-repo
+
+pushd release-git-repo > /dev/null
+
+snapshotVersion=$( get_revision_from_pom )
+releaseVersion=$( strip_snapshot_suffix "$snapshotVersion" )
+nextVersion=$( bump_version_number "$snapshotVersion" )
+
+echo "Releasing $releaseVersion (next version will be $nextVersion)"
+set_revision_to_pom "$releaseVersion"
+git config user.name "Spring Buildmaster" > /dev/null
+git config user.email "[email protected]" > /dev/null
+git add pom.xml > /dev/null
+git commit -m"Release v$releaseVersion" > /dev/null
+git tag -a "v$releaseVersion" -m"Release v$releaseVersion" > /dev/null
+build
+
+echo "Setting next development version (v$nextVersion)"
+git reset --hard HEAD^ > /dev/null
+set_revision_to_pom "$nextVersion"
+git add pom.xml > /dev/null
+git commit -m"Next development version (v$nextVersion)" > /dev/null
+
+popd > /dev/null
+
+milestone_number=$( curl -s "https://api.github.com/repos/spring-io/github-release-notes-generator/milestones" -u ${GITHUB_USERNAME}:${GITHUB_TOKEN} | jq -r --arg MILESTONE "${releaseVersion}" '.[]  | select(.title == $MILESTONE) | .number' )
+
+echo $releaseVersion > built-artifact/version
+cp release-git-repo/target/github-release-notes-generator.jar built-artifact/
+java -jar release-git-repo/target/github-release-notes-generator.jar  --releasenotes.github.organization=spring-io --releasenotes.github.repository=github-release-notes-generator $milestone_number built-artifact/release-notes.md

ci/tasks/release.yml

@@ -0,0 +1,19 @@
+---
+platform: linux
+image_resource:
+  type: docker-image
+  source:
+    repository: springci/github-release-notes-generator-ci-image
+    tag: master
+inputs:
+- name: git-repo
+outputs:
+- name: release-git-repo
+- name: built-artifact
+params:
+  GITHUB_USERNAME:
+  GITHUB_TOKEN:
+caches:
+- path: maven
+run:
+  path: git-repo/ci/scripts/release.sh