Confused about process to publish snapshots to BinTray - gradle

Question

I want to investigate publishing Hibernate ORM jars to Bintray. However one requirement we have is to be able to publish snapshots, which I see Bintray now supports through this OJO repository. However, I am quite confused about how this is supposed to work after reading the documentation.
First, the documentation mentions that I should be able to request publishing to JCenter and at the same time be able to request to be able to publish snapshots. However, I see no such options: https://bintray.com/hibernate/artifacts/hibernate-orm
Secondly, after I get the account on OJO set up, what, if anything, do I need to do special with the Bintray/Gradle plugin?

Answer 1

After many trial and errors I've ended up with the following setup.
We use 2 different plugins for publishing:
snapshots and release publishing (using com.jfrog.artifactory) and
bintray-related activities (using com.jfrog.bintray) in gradle (in the project p6spy).
Relevant parts from the build.gradle file follow, please note the specifics of the project :
plugins {
...
// to publish !SNAPSHOTs to bintray and sync it to maven-central
// ./gradlew bintrayUpload
id 'com.jfrog.bintray' version '1.7.3'
// to publish SNAPSHOTs and !SNAPSHOTs to oss.jfrog.org
// ./gradlew artifactoryPublish
id 'com.jfrog.artifactory' version '4.5.2'
}
publishing {
publications {
maven(MavenPublication) {
from components.java
groupId project.group
artifactId project.archivesBaseName
version project.version
...
pom {
packaging 'jar'
withXml {
asNode().children().last() + {
def builder = delegate
// maven central publishing mandatories
builder.name project.name
builder.description description
builder.url 'https://github.com/p6spy/p6spy'
builder.licenses {
builder.license {
builder.name 'The Apache Software License, Version 2.0'
builder.url 'http://www.apache.org/licenses/LICENSE-2.0.txt'
builder.distribution 'repo'
}
}
builder.scm {
builder.url 'http://github.com/p6spy/p6spy'
builder.connection 'scm:git:git://github.com/p6spy/p6spy.git'
builder.developerConnection 'scm:git:ssh://github.com:p6spy/p6spy.git'
}
builder.developers {
builder.developer {
builder.name 'Quinton McCombs'
builder.email 'quinton.mccombs#gmail.com'
}
builder.developer {
builder.name 'Peter Butkovic'
builder.email 'butkovic#gmail.com'
}
builder.developer {
builder.name 'Felix Barnsteiner'
builder.email 'felix.barnsteiner#isys-software.de'
}
}
// maven central publishing optionals
builder.issueManagement {
builder.system 'github'
builder.url 'https://github.com/p6spy/p6spy/issues'
}
builder.ciManagement {
builder.system 'Travis CI'
builder.url 'https://travis-ci.org/p6spy/p6spy'
}
}
}
}
}
}
}
// to publish SNAPSHOTs to http://oss.jfrog.org/oss-snapshot-local/
// and !SNAPSHOTs to http://oss.jfrog.org/oss-release-local/
artifactory {
contextUrl = 'https://oss.jfrog.org'
resolve {
repository {
repoKey = 'libs-release'
}
}
publish {
repository {
// The Artifactory repository key to publish to
// when using oss.jfrog.org the credentials are from Bintray.
if (project.version.endsWith("-SNAPSHOT")) {
repoKey = 'oss-snapshot-local'
} else {
repoKey = 'oss-release-local'
}
username = System.getenv('BINTRAY_USER')
password = System.getenv('BINTRAY_API_KEY')
}
defaults {
publications 'maven'
properties = [ 'bintray.repo': 'p6spy/maven', 'bintray.package': 'p6spy:p6spy', 'bintray.version': project.version.toString() ]
}
}
}
// to publish to bintray and later sync to maven-central
bintray {
user = System.getenv('BINTRAY_USER')
key = System.getenv('BINTRAY_API_KEY')
publications = ['maven']
// dryRun = true
// publish = true
pkg {
repo = 'maven'
name = 'p6spy:p6spy'
userOrg = group
desc = description
websiteUrl = 'https://github.com/p6spy/p6spy'
issueTrackerUrl = 'https://github.com/p6spy/p6spy/issues'
vcsUrl = 'https://github.com/p6spy/p6spy.git'
licenses = ['Apache-2.0']
publicDownloadNumbers = true
githubRepo = 'p6spy/p6spy'
githubReleaseNotesFile = 'docs/releasenotes.md'
version {
released = new Date()
name = project.version
vcsTag = "p6spy-${project.version}"
// Optional configuration for Maven Central sync of the version
mavenCentralSync {
sync = true //[Default: true] Determines whether to sync the version to Maven Central.
close = '1' //Optional property. By default the staging repository is closed and artifacts are released to Maven Central. You can optionally turn this behaviour off (by puting 0 as value) and release the version manually.
user = System.getenv('SONATYPE_USERNAME') //OSS user token: mandatory
password = System.getenv('SONATYPE_PASSWORD') //OSS user password: mandatory
}
}
}
}
UPDATE
Published:
snapshots are in: http://oss.jfrog.org/oss-snapshot-local/p6spy/p6spy/ (I just followed official docs: https://www.jfrog.com/confluence/display/RTF/Deploying+Snapshots+to+oss.jfrog.org)
releases end up in: http://oss.jfrog.org/oss-release-local/p6spy/p6spy/ and are later auto-synced to maven central: http://repo1.maven.org/maven2/p6spy/p6spy/