Revapi

Table of Contents

Summary
Building
Usage
- Standalone
- Maven
- Gradle
- Embedding
Extending Revapi
Getting in touch

Revapi is a tool for API analysis and change tracking.

Summary

While Revapi is designed to be extensible and in theory should support API checks in other languages than Java (not just programming languages but anything that can be decomposed to a tree structure) the only extension in existence today is the Java API checker.

The main distinguishing features of the Java API checker include:

large number of API checks
- categorized by their influence on source, binary and "semantic" compatibility
support for computing the API "surface" by tracking usages of types across the checked library and also its dependencies (ability to report type "leakage" from deps)
powerful filtering of elements to check and reclassification of found problems
ability to filter by annotation presence
Maven plugin automatically includes dependencies in the check

Other features:

ability to judge the severity of changes based on semver rules (see here)
automatic updates of pom.xml or release.properties versions according to semver rules (see here)
pluggable reporting (standard output, maven site generation, FreeMarker templates, JSON, …)

Building

This is a maven project, so to build you simply:

mvn install

Usage

Revapi can be invoked in a couple of ways. It can be used as a standalone program, as a maven plugin or it can also be embedded in your application and used as a library.

Standalone

Download the standalone distribution zip and

unzip revapi-XXX-standalone.zip
cd revapi-XXX-standalone
./revapi.sh

Read the usage info and go.

Maven

<build>
    <plugins>
        <plugin>
            <groupId>org.revapi</groupId>
            <artifactId>revapi-maven-plugin</artifactId>
            <version>...</version>
            <dependencies>
                <dependency>
                    <groupId>org.revapi</groupId>
                    <artifactId>revapi-java</artifactId>
                    <version>...</version>
                </dependency>
                <dependency>
                    <groupId>com.acme</groupId>
                    <artifactId>my-extension</artifactId>
                    <version>...</version>
                </dependency>
                ...
            </dependencies>
            <configuration>
                ...
            </configuration>
            <executions>
                <execution>
                    <id>api-check</id>
                    <goals><goal>check</goal></goals>
                    ...
                </execution>
                ...
            </executions>
        </plugin>
        ...
    </plugins>
    ...
</build>

Gradle

The Gradle plugin available for Revapi at https://plugins.gradle.org/plugin/org.revapi.revapi-gradle-plugin and it is maintained under https://github.com/revapi/gradle-revapi

buildscript {
  repositories {
    maven {
      url = uri("https://plugins.gradle.org/m2/")
    }
  }
  dependencies {
    classpath("org.revapi:gradle-revapi:x.y.z")
  }
}

apply(plugin = "org.revapi.revapi-gradle-plugin")

Embedding

Revapi revapi = Revapi.builder().withAllExtensionsFromThreadContextClassLoader().build();

AnalysisContext analysisContext = AnalysisContext.builder()
    .withOldAPI(API.of(...))
    .withNewAPI(API.of(...))
    .withConfigurationFromJSON("json").build();

revapi.analyze(analysisContext);

Extending Revapi

See the site for more info.

Getting in touch

Mastodon: @[email protected]
Twitter: @revapi_org
Matrix: #revapiorg:matrix.org
Mailing list: [email protected]
Issues: https://github.com/revapi/revapi/issues
Code: https://github.com/revapi/

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Revapi

Summary

Building

Usage

Standalone

Maven

Gradle

Embedding

Extending Revapi

Getting in touch

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