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Gradle Conjure

Gradle Conjure is a build tool which allows defining and generating code for Conjure APIs in Java projects.

Overview

gradle-conjure is a set of Gradle plugins which allow you to define and consume Conjure-defined APIs easily.

• com.palantir.conjure allows API authors to easily define APIs and generate bindings for Java, TypeScript and Python.
• com.palantir.conjure-publish allows API authors to publish a Conjure definition as a single self-contained file.
• com.palantir.conjure-local allows API consumers to locally generate bindings for Conjure API definitions.

com.palantir.conjure

To see how to add gradle-conjure to an existing project, please see our getting started guide.

Tasks

• compileConjure - Generates code for your API definitions in src/main/conjure/**/*.yml
• compileConjureObjects - Generates Java POJOs from your Conjure definitions.
• compileConjureTypeScript - Generates TypeScript files and a package.json from your Conjure definitions.
• compileIr - Converts your Conjure YML files into a single portable JSON file in IR format.
• compileTypeScript - Runs npm tsc to compile generated TypeScript files into JavaScript files.
• publishTypeScript - Runs npm publish to publish a TypeScript package generated from your Conjure definitions.

Extension

com.palantir.conjure also exposes a conjure extension, which allows you to configure the behaviour of each supported generator. You configure the generator by specifying properties in a corresponding named closure. These properties are converted into command line options or flags and passed on to the generator CLI.

The supported closures are:

• java - Configuration for Conjure-Java
• typescript - Configuration for Conjure-TypeScript
• python - Configuration for Conjure-Python

The following is example usage of the extension.

conjure {
    typescript {
        version = "0.0.0"
    }

    java {
        retrofitCompletableFutures = true
    }
}

Service dependencies

To help consumers correlate generated Conjure API artifacts with a real server that implements this API, the com.palantir.conjure plugin supports embedding optional 'service dependencies' in generated artifacts. (Requires gradle-conjure 4.6.2+.)

This information can be defined using the serviceDependencies extension on your API project. You must specify the 'group' and 'name' of the server that implements this API, along with a minimum, maximum and recommended version for the server.

apply plugin: 'com.palantir.conjure'

serviceDependencies {
    serviceDependency {
        productGroup = 'com.palantir.group'
        productName = 'foo'
        minimumVersion = "${project.version}"
        maximumVersion = "${project.version.tokenize('.')[0]}.x.x"
        recommendedVersion = "${project.version}"
    }
}

For conjure-typescript, this information is passed as an extra flag, --productDependencies=your-project/build/service-dependencies.json, which is used to embed information in the resultant package.json.

For conjure-java, this information is directly embedded into the Jar for the -jersey and -retrofit projects. It is stored as a manifest property, Sls-Recommended-Product-Dependencies, which can be detected by sls-packaging.

com.palantir.conjure-publish

To enable publishing of your API definition for external consumption, add the com.palantir.conjure-publish which applies com.palantir.conjure and also creates a new "conjure" publication.

com.palantir.conjure-local

Tasks

• generateConjure - Generates code for all Conjure dependencies
• generateTypeScript - Generates TypeScript bindings for all Conjure dependencies
• generatePython - Generates Python bindings for all Conjure dependencies
• generate<language> - Task rule which will generates <language> bindings for all Conjure dependencies, where <language> is the name of the generator to be used

Configurations

• conjure - Configuration for adding Conjure API dependencies
• conjureGenerators - Configuration for adding generator dependencies

Using the conjure extension you can depend upon multiple Conjure APIs at once

dependencies {
    conjure 'com.company.product:some-api:1.0.0'
    conjure 'com.company.other.product:other-api:1.0.0'
}

Using the conjureGenerators extension allows you to use use any Conjure generator which conforms to RFC 002

 dependencies {
     conjure 'com.company.product:some-api:1.0.0'
     conjure 'com.company.other.product:other-api:1.0.0'

+    conjureGenerators 'com.palantir.conjure.postman:conjure-postman:0.1.0'
 }

For each generator specified referenced by the configuration you must also add a project with the corresponding name

 include 'conjure-api'
+include 'conjure-api:postman'

com.palantir.conjure-java-local

com.palantir.conjure-java-local helps to generate Java code from the conjure definition other services publish.

apply plugin: 'com.palantir.conjure-java-local'

conjure {
    java {
        addFlag 'objects'
        addFlag 'strictObjects'
        // addFlag 'undertow' as an implementer
        // addFlag 'dialogue' as a consumer
    }
}

dependencies {
    conjure 'com.company.product:[email protected]'
}

subprojects {
    dependencies {
        // api 'com.palantir.conjure.java:conjure-undertow-lib' as an implementer
        // implementation 'com.palantir.dialogue:dialogue-target' as a consumer
    }
}

Contributing

See the CONTRIBUTING.md document.