Gradle Plugins for Corda and Cordapps
The projects at this level of the project are gradle plugins for cordapps and are published to Maven Local with the rest of the Corda libraries.
From the beginning of development for Corda 4.0 these plugins have been split from the main Corda repository. Any changes to gradle plugins pre-4.0 should be on a release branch within the Corda repo. Any changes after 3.0 belong in this repository.
Version number
To modify the version number edit the root build.gradle
.
Until v4.0
, the version number was tracking the Corda version number it was built for. Eg; Corda 4.0
was built as 4.0.x
. This was broken from v4.3
onwards (Corda 4.3 and plugins 5.0). The major version number will change when there is a breaking change, for example when the minimum (major) version of Gradle changes.
Corda 5 requires Corda Gradle Plugins 6.x.
Getting started
You will need JVM 8 installed and on the path to run and install these plugins. However, some plugins may also require a Java 11 toolchain for testing purposes.
Installing locally
To install locally for testing a new build against Corda you can run the following from the project root;
./gradlew install
Release process
The version number of the "bleeding edge" in master
is always a -SNAPSHOT
version. To create a new release, a maintainer must create a new branch off the latest commit in this release, remove the -SNAPSHOT
from the version number, create a tag and then run the publish to artifactory task for the created tag in Jenkins. The version number in master
is then advanced to the next -SNAPSHOT
number.
Using the plugins.
These plugins are published to R3's Artifactory. More recently, they are also published to Gradle's own plugins repository and can be imported into your projects using Gradle's plugins
DSL.
The plugins themselves fall into two categories: those intended for developing CorDapps, and those which are primarily used to build Corda itself.
Plugins for CorDapp development.
-
net.corda.plugins.cordapp-cpk
This plugin generates CPK-format CorDapps that are compatible with Corda 5, and supercedes Corda's originalcordapp
plugin. It will package your CorDapp classes into an OSGi bundle (a jar whose manifest contains OSGi metadata), and then package that bundle together with its dependencies into a.cpk
archive. Dependencies which are added to Gradle'scordaProvided
,cordaRuntimeOnly
andcordapp
configurations are excluded from the.cpk
file. Both the OSGi bundle and the CPK archive are signed. The plugin also provides acordapp
Gradle extension so that you can configure your CorDapp's metadata.Requires Gradle 6.6
-
net.corda.plugins.cordapp
This plugin packages your CorDapp classes into a single jar file, along with the contents of all of the jar's dependent jars. Dependencies which are added to Gradle'scordaCompile
,cordaRuntime
andcordapp
configurations are excluded from this packaging. The final jar is then signed. It also provides acordapp
Gradle extension so that you can configure your CorDapp's metadata. This metadata is currently optional, but you are strongly advised to provide it.Requires Gradle 5.6
-
net.corda.plugins.cordformation
This plugin providesCordform
,Dockerform
andDockerImage
Gradle tasks for creating test deployments of multiple Corda nodes and their CorDapps. It also invokes the Network Bootstrapper over the deployment for you, and provides you with arunnodes
script to boot it all up afterwards.Requires Gradle 5.1
-
net.corda.plugins.quasar-utils
This plugin configures a Gradle module to use Quasar. Specifically:- It allows you to specify the Maven group and version of the
quasar-core-osgi
artifacts to use. - Adds the
quasar-core-osgi
artifact, along with all of its transitive dependencies, to Gradle'scordaRuntimeOnly
configuration. - Adds the
quasar-core-osgi
artifact to Gradle'scordaProvided
configuration without any of its transitive dependencies. - Applies the
quasar-core-osgi
Java agent to all of the module'sJavaExec
tasks. - Applies the
quasar-core-osgi
Java agent to all of the module'sTest
tasks. - Provides a
quasar
Gradle extension so that you can configure which packages the Quasar Java agent should not instrument at runtime.
Requires Gradle 6.6
- It allows you to specify the Maven group and version of the
Internal Corda plugins.
These plugins are unlikely to be useful to CorDapp developers outside of R3.
-
net.corda.plugins.api-scanner
This plugin scans thepublic
andprotected
classes inside a Gradle module's "primary" jar artifact and writes a summary of theirpublic
andprotected
methods and fields into an output file. The "primary" jar is assumed by default to be the one without anarchiveClassifier
, although this is configurable. Its goal is to alert Corda developers to accidental breaks in our public ABI for those Corda modules we have declared to be "stable", and is used by the Continuous Integration builds.Requires Gradle 5.6
-
net.corda.plugins.jar-filter
This plugin allows us to delete certain annotated classes, methods and fields from the compiled byte-code inside a jar file. It can also rewrite Kotlin classes'@kotlin.Metadata
annotations to make them consistent again with their revised byte-code. It is currently used in Corda'score-deterministic
andserialization-deterministic
modules, and has been successfully tested with Kotlin 1.2.x - 1.4.32.Requires Gradle 6.8
-
net.corda.plugins.publish-utils
Here be Dragons! This plugin helps configure Gradle'smaven-publish
plugin to publish Corda modules to Bintray and to R3's Artifactory. However, its workings probably shouldn't be allowed and they should most definitely never be copied. Unfortunately, it is heavily constrained by how JFrog's Bintray and Artifactory plugins themselves work, and so we're currently stuck with it "as is". It is useful though - just shut your eyes and hold your nose.Requires Gradle 6.6