double16/pet-store heroku deploy examples

build.gradle

task emptyPom {
    outputs.file('build/pom.xml')
    doLast {
        new File('build/pom.xml') << """
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>pet.store</groupId>
  <artifactId>placeholder</artifactId>
  <packaging>jar</packaging>
  <version>1.0</version>
  <name>Pet Store</name>
  <build>
    <finalName>placeholder</finalName>
  </build>
</project>
"""
    }
}

task herokuSources(type: Tar, dependsOn: [emptyPom, bootRepackage]) {
    description = "Package built application into Heroku sources for faster deployment"
    group = "distribution"
    appendix = "heroku"
    compression = Compression.GZIP
    from jar.archivePath
    from 'Procfile'
    from 'system.properties'
    from 'build/pom.xml'
}

// Documentation at https://devcenter.heroku.com/articles/build-and-release-using-the-api
task deployToHeroku(dependsOn: herokuSources) {
    description = 'Deploy the application to Heroku via the Platform API REST services'
    group = "distribution"
    doLast {
        RESTClient heroku = new RESTClient("https://api.heroku.com/apps/${System.getenv("HEROKU_APP_NAME")}/")
        heroku.headers['Authorization'] = "Bearer ${System.getenv('HEROKU_AUTH_TOKEN')}"
        heroku.headers['Accept'] = 'application/vnd.heroku+json; version=3'

        // upload sources
        def sources = heroku.post(path: 'sources')
        def put_url = sources.data.source_blob.put_url
        def get_url = sources.data.source_blob.get_url

        // upload sources, Heroku/AWS is very picky about the headers sent, so we need to use this way. For example, Content-Type must not be present
        logger.info("Uploading ${herokuSources.archivePath} to ${put_url}")
        def res = new DefaultHttpClient().execute(new HttpPut(URI: new URI(put_url), entity: new FileEntity(herokuSources.archivePath)))
        if (res.statusLine.statusCode > 399) {
            throw new IOException(res.statusLine.reasonPhrase)
        }

        // start the build
        logger.info("Building ${get_url}")
        heroku.post(path: 'builds', requestContentType: 'application/json',
            body: ['source_blob': ['url':get_url, 'version': "git rev-parse HEAD".execute().text.trim() ]]
        )
    }
    onlyIf { System.getenv('HEROKU_AUTH_TOKEN') && System.getenv('HEROKU_APP_NAME') }
}

heroku-build.gradle

heroku.post(path: 'builds', requestContentType: 'application/json',
  body: ['source_blob': ['url':get_url, 'version': "git rev-parse HEAD".execute().text.trim() ]]
)

heroku-sources.gradle

def sources = heroku.post(path: 'sources')
def put_url = sources.data.source_blob.put_url
def get_url = sources.data.source_blob.get_url

heroku-upload.gradle

def res = new DefaultHttpClient().execute(new HttpPut(URI: new URI(put_url), entity: new FileEntity(herokuSources.archivePath)))
if (res.statusLine.statusCode > 399) {
  throw new IOException(res.statusLine.reasonPhrase)
}

Procfile

web: java -Dgrails.env=prod -Dserver.port=${PORT:-8080} -Dserver.host=0.0.0.0 ${JAVA_OPTS} -jar pet-store*.jar

restclient.gradle

RESTClient heroku = new RESTClient("https://api.heroku.com/apps/${System.getenv("HEROKU_APP_NAME")}/")
heroku.headers['Authorization'] = "Bearer ${System.getenv('HEROKU_AUTH_TOKEN')}"
heroku.headers['Accept'] = 'application/vnd.heroku+json; version=3'

system.properties

java.runtime.version=1.8