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https://github.com/shrinkwrap/resolver

ShrinkWrap Resolvers
https://github.com/shrinkwrap/resolver

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ShrinkWrap Resolvers

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README 

        
# Shrinkwrap Resolvers



## Introduction to ShrinkWrap Resolvers



ShrinkWrap Resolvers is a Java API designed to simplify the process of obtaining artifacts from a repository system. It simplifies the retrieval of third-party libraries and dependent modules, allowing developers to easily incorporate them into their projects.



The project primarily focuses on supporting Maven-based repository structures, enabling developers to specify coordinates that uniquely identify an artifact in the repository. It also provides basic support for Gradle-based projects.



## Requirements



## Build:



- **JDK**: Version 8 or newer.

- **Maven**: Version 3.6.3 or newer.



## Use:



- **JDK**: Version 8 or newer.

- **Maven**: Version 3.3.9 or newer.

- **Gradle**: Version 3 or newer.



## Adding ShrinkWrap Resolvers to Your Project



To include ShrinkWrap Resolvers in your project, you can add a dependency on the `shrinkwrap-resolver-depchain` module in your Maven `pom.xml`:



```xml



    

      org.jboss.shrinkwrap.resolver

      shrinkwrap-resolver-depchain

      ${version.shrinkwrap.resolvers}

      test

      pom

    



```



If you are using Arquillian BOM prior to version 1.1.0.Final, ensure that you import ShrinkWrap Resolvers BOM preceding Arquillian BOM to get version 2.0.x.



## Resolving Dependencies



To initiate the resolution of dependencies, utilize the `org.jboss.shrinkwrap.resolver.api.maven.Maven` class. Below are typical scenarios for its usage.

### Resolution of Artifacts by Maven Coordinates



Maven coordinates follow `groupId:artifactId:[packagingType:[classifier]]:version` format. You can use these coordinates to resolve a file, where `G` is the group ID, `A` is the artifact ID, `P` is the packaging type, `C` is the classifier, and `V` is the version.



#### Resolve a file using Maven coordinates with transitive dependencies:

```java

File[] files = Maven.resolver().resolve("G:A:V").withTransitivity().asFile();

```



#### Resolve a single file without transitive dependencies:

```java

File file = Maven.resolver().resolve("G:A:V").withoutTransitivity().asSingleFile();

```



#### Resolve multiple artifacts:

```java

File[] files = Maven.resolver().resolve("G1:A1:V1", "G2:A2:V2").withTransitivity().asFile();

```



#### Specifying Packaging and Classifier



```java

File file = Maven.resolver().resolve("G:A:war:V").withTransitivity().asFile();

File fileWithClassifier = Maven.resolver().resolve("G:A:test-jar:tests:V").withTransitivity().asFile();

```



#### Returning Resolved Artifacts



ShrinkWrap Resolvers provides various options to retrieve resolved artifacts. You can obtain them as files, streams, URLs, or specific archive types like JavaArchive, WebArchive, or EnterpriseArchive. For example:

```java

// Get the resolved artifact as a URL

URL[] urls = Maven.resolver().resolve("G:A:V").withTransitivity().as(URL.class);

// Get the resolved artifact as a JAR

JavaArchive[] jars = Maven.resolver().resolve("G:A:V").withTransitivity().as(JavaArchive.class);

// Get the resolved artifact as a WAR

WebArchive war = Maven.resolver().resolve("G:A:war:V").withTransitivity().asSingle(WebArchive.class);



```



#### Working with Artifact Metadata

```java

MavenResolvedArtifact artifact = Maven.resolver().resolve("G:A:war:V").withoutTransitivity()

  .asSingle(MavenResolvedArtifact.class);

MavenCoordinate coordinates = artifact.getCoordinate();

MavenArtifactInfo[] dependencies = artifact.getDependencies();

String version = artifact.getResolvedVersion();

ScopeType scope = artifact.getScope();

// You can still retrieve resolved artifact from MavenResolvedArtifact

File file = artifact.asFile();

```



#### Working with artifact coordinates

```java

MavenCoordinate[] coordinates = Maven.resolver().resolve("G:A:V")

   .withTransitivity().as(MavenCoordinate.class);

```



#### Resolution of artifacts as collection

```java

List files = Maven.resolver().resolve("G:A:V")

    .withTransitivity().asList(File.class);

```



#### Exclude specific dependencies while resolving an artifact

```java

File file = Maven.resolver().addDependencies(

    MavenDependencies.createDependency("G:A:V", ScopeType.COMPILE, false,

      MavenDependencies.createExclusion("G:B"))).resolve().withTransitivity().asFile();

```



#### Control Resolution Results with Strategy

```java

File file = Maven.resolver().resolve("G:A:V").using(new RejectDependenciesStrategy(false, "G:B")).asFile();

```



### ShrinkWrap Resolver Strategies



In ShrinkWrap Resolver, strategies allow you to modify the dependency graph and change the default behavior for resolving transitive dependencies.



By default, Maven and ShrinkWrap Resolver do not resolve dependencies in provided and test scope, and skip optional dependencies.



#### Available Strategies:



- **AcceptAllStrategy** (same as TransitiveStrategy):

  Accepts all dependencies of artifacts.



- **AcceptScopesStrategy**:

  Accepts only dependencies with defined scope types.



- **CombinedStrategy**:

  Combines multiple strategies with a logical AND operation.



- **NonTransitiveStrategy**:

  Rejects all transitive dependencies; only directly specified dependencies are accepted.



- **RejectDependenciesStrategy**:

  Rejects dependencies defined by G:A. By default, it is transitive, meaning all dependencies originating at G:A are removed. To change this behavior to reject defined dependencies but keep their descendants, use `RejectDependenciesStrategy(false, "G:A")`.



- **TransitiveStrategy** (same as AcceptAllStrategy):

  Accepts all dependencies of artifacts.



#### Control Sources of Resolution



ShrinkWrap Resolvers allows you to specify artifact resolution sources. By default, it uses the classpath (Maven Reactor) and Maven Central repository.



```java

// Disable classpath resolution

Maven.configureResolver().withClassPathResolution(false).resolve("G:A:V").withTransitivity().asFile();

// Disable using Maven Central repository

Maven.configureResolver().withMavenCentralRepo(false).resolve("G:A:V").withTransitivity().asFile();

// Enable offline mode to use only local cache, avoiding remote repositories

Maven.configureResolver().workOffline().resolve("G:A:V").withTransitivity().asFile();

// Ignore the origin of artifacts present in the local repository

Maven.configureResolver().useLegacyLocalRepo(true).resolve("G:A:V").withTransitivity().asFile();

```



#### Specify settings.xml

```java

Maven.configureResolver().fromFile("/path/to/settings.xml")

  .resolve("G:A:V").withTransitivity().asFile();



Maven.configureResolver().fromClassloaderResource("path/to/settings.xml")

  .resolve("G:A:V").withTransitivity().asFile();

```



**Warning:** ShrinkWrap Resolvers doesn't consume settings.xml specified on the command line or in the IDE. It reads settings.xml files at standard locations: `~/.m2/settings.xml` and `$M2_HOME/conf/settings.xml`, unless overridden in the API or via System property.



#### Define Maven repositories manually



```java

Maven.configureResolver().withRemoteRepo("my-repository-id", "url://to/my/repository", "layout")

  .resolve("G:A:V").withTransitivity().asFile();



Maven.configureResolver().withRemoteRepo(MavenRemoteRepositories.createRemoteRepository("my-repository-id", "url://to/my/repository", "layout"))

  .resolve("G:A:V").withTransitivity().asFile();

```



**Note:** If a repository with the same ID is configured in either settings.xml or pom.xml, it will be ignored.



### Resolution of Artifacts from POM Files



In Maven projects, dependencies are specified in the pom.xml file. ShrinkWrap Resolvers follow the DRY principle by loading this metadata automatically. It creates an effective POM model using your pom.xml, parent hierarchy, and Super POM, allowing you to resolve artifacts with the included metadata from local, classpath, and remote repositories.



#### Load dependencies from the POM:

  ```java

  Maven.resolver().loadPomFromFile("/path/to/pom.xml").resolve("G:A").withTransitivity().asFile();

  ```



#### Load dependencies with non-JAR packaging or classifier:

  ```java

  Maven.resolver().loadPomFromClassLoaderResource("/path/to/pom.xml").resolve("G:A:P:?").withTransitivity().asFile();

  ```



#### Import and resolve dependencies based on specific scopes:

  ```java

  Maven.resolver().loadPomFromFile("/path/to/pom.xml").importDependencies(ScopeType.TEST, ScopeType.PROVIDED).resolve().withTransitivity().asFile();

  Maven.resolver().loadPomFromFile("/path/to/pom.xml").importRuntimeDependencies().resolve().withTransitivity().asFile();

  ```



#### Activate profiles:

By default, ShrinkWrap Resolvers activates profiles based on property value, file presence, active by default profiles, operating system and JDK.

  ```java

  Maven.resolver().loadPomFromFile("/path/to/pom.xml", "activate-profile-1", "!disable-profile-2").importRuntimeAndTestDependencies().resolve().withTransitivity().asFile();

  ```



### Version Range Resolution

The ShrinkWrap Resolver API allows for resolution of available versions info from a requested range. The [Maven documentation](http://maven.apache.org/enforcer/enforcer-rules/versionRanges.html) specifies the version range syntax.

```java

final MavenVersionRangeResult versionRangeResult = Maven.resolver().resolveVersionRange("G:A:[1.0.0]");

```



### System properties



ShrinkWrap Resolvers allows you to override any programmatic configuration via System properties.



- `org.apache.maven.user-settings`: Path to user settings.xml file, which takes priority in merging over global settings if both are provided.



- `org.apache.maven.global-settings`: Path to global settings.xml file, merged with user settings if provided, with user settings taking priority.



- `settings.security`: Path to settings-security.xml, that contains encrypted master password for password protected Maven repositories.



- `org.apache.maven.offline`: Flag to indicate offline mode.



- `org.apache.maven.flattened-pom-path`: Path to the flattened variant of the regular pom.xml file. Default value is .flattened-pom.xml.



- `maven.repo.local`: Path to local repository with cached artifacts. Overrides value defined in any of the settings.xml files.



- `maven.legacyLocalRepo`: Flag whether to ignore origin tracking for artifacts present in local repository.



## Embedded Maven



Embedded Maven allows direct invocation of Maven builds from Java code, offering functionalities such as downloading and using desired Maven binaries, an uncluttered API for simple or complex builds, additional methods for build control (e.g., ignoring failures), and easy access to build outputs and artifacts.



### Downloading Maven Binaries



```java

// Downloads and uses the specified Maven version, cached in $HOME/.arquillian/resolver/maven/

EmbeddedMaven.forProject("path/to/pom.xml").useMaven3Version(String version);

// Uses Maven distribution from the specified URL. 

// If useCache is false, it downloads to ${project.directory}/target/resolver-maven/downloaded.

EmbeddedMaven.forProject("path/to/pom.xml").useDistribution(URL mavenDistribution, boolean useCache);

// Uses Maven installation located on the given path

EmbeddedMaven.forProject("path/to/pom.xml").useInstallation(File mavenHome);

// Uses local Maven installation available on your $PATH

EmbeddedMaven.forProject("path/to/pom.xml").useLocalInstallation();

// Uses the default Maven version, see DistributionStage#DEFAULT_MAVEN_VERSION

EmbeddedMaven.forProject("path/to/pom.xml").useDefaultDistribution();

```



### Additional Features



Embedded Maven provides features like skipping tests, ignoring failures, logging Maven build invocation commands, and accessing built projects and their artifacts.



```java

// Skips tests. Defaults to true.

EmbeddedMaven.forProject("path/to/pom.xml").skipTests(boolean skipTests);

// Sets logging level to DEBUG

EmbeddedMaven.forProject("path/to/pom.xml").setDebugLoggerLevel();

// Sets your own logger implementation. Use also to set other logger levels.

EmbeddedMaven.forProject("path/to/pom.xml").setLogger(InvokerLogger invokerLogger);

// Ignores Maven build failures. Instance of BuiltProject with non-zero value in mavenBuildExitCode is returned.

EmbeddedMaven.forProject("path/to/pom.xml").ignoreFailure().build();

```



### BuiltProject

BuiltProject is a Java class that represents a built project. An instance of this class is returned by the method build() when the Maven build is completed.



#### Examples



Package the project and get the default archive:

```java

Archive defaultArchive = EmbeddedMaven.forProject("path/to/pom.xml").setGoals("package").build().getDefaultBuiltArchive();

```



Get built project using goals and active profile:

```java

BuiltProject builtProject = EmbeddedMaven

        .forProject("path/to/pom.xml")

        .setGoals("clean", "package")

        .setProfiles("production")

        .build();

```



Get default archive or all archives in the build directory:

```java

Archive archive = builtProject.getDefaultBuiltArchive();

List javaArchives = builtProject.getArchives(JavaArchive.class);

```



Using Maven 3.1.0 to build a project with goal `install`, property `wildfly=true`, suppressing build output, and ignoring all failures:

```java

BuiltProject builtProject = EmbeddedMaven

    .forProject("path/to/pom.xml")

    .useMaven3Version("3.1.0")

    .setGoals("install")

    .addProperty("wildfly", "true")

    .setQuiet()

    .ignoreFailure()

    .build();

```



### Daemon Build



For running Maven builds in the background, Embedded Maven offers daemon build functionality, enabling asynchronous execution of builds and waiting until specific output lines are matched before proceeding.



```java

EmbeddedMaven.forProject("path/to/pom.xml").setGoals("spring-boot:run").useAsDaemon().build();

```



## Experimental Features



### Debugging



Obtain internal details of ShrinkWrap Resolver sessions for debugging purposes by casting the resolver object to MavenWorkingSessionContainer and retrieving the session.

  ```java

  MavenResolverSystem resolver = Maven.resolver();

  MavenWorkingSession session = ((MavenWorkingSessionContainer) resolver).getMavenWorkingSession();

  ```



### Logging



Configure Java Util Logging for increased verbosity, including logging interactions with Maven Repositories, by providing a `logging.properties` file and specifying its path with `-Djava.util.logging.config.file=/path/to/logging.properties`.



### ShrinkWrap Resolver Maven Plugin



Propagate settings specified on the command line into test execution using the `shrinkwrap-resolver-maven-plugin` in the `` section of your `pom.xml`. 

```java

Maven.configureResolverViaPlugin().resolve("G:A").withTransitivity().asFile();

```



### Maven Importer



Maven Importer automates archive construction using your project's pom.xml. With minimal effort, it compiles sources, creates MANIFEST.MF, and retrieves dependencies.



```java

ShrinkWrap.create(MavenImporter.class)

  .loadPomFromFile("/path/to/pom.xml").importBuildOutput().as(WebArchive.class);



ShrinkWrap.create(MavenImporter.class)

  .loadPomFromFile("/path/to/pom.xml", "activate-profile-1", "!disable-profile-2")

  .importBuildOutput().as(WebArchive.class);



ShrinkWrap.create(MavenImporter.class).configureFromFile("/path/to/settings.xml")

  .loadPomFromFile("/path/to/pom.xml").importBuildOutput().as(JavaArchive.class);

```

### Gradle



Gradle Resolver and Gradle Importer are only experimental features, and therefore, the support for it is limited.



#### Gradle Resolver



Resolve dependencies defined in build.gradle files.



```java

final List extends Archive> archives = Gradle.resolver()

              .forProjectDirectory(".")

              .importCompileAndRuntime()

              .resolve()

              .asList(JavaArchive.class);

```



#### Gradle Importer



Import build outputs from Gradle projects



```java

ShrinkWrap.create(EmbeddedGradleImporter.class)

  .forThisProjectDirectory().importBuildOutput().as(WebArchive.class);



ShrinkWrap.create(EmbeddedGradleImporter.class)

  .forProjectDirectory("/path/to/dir").importBuildOutput("/path/to/result/war").as(WebArchive.class);



ShrinkWrap.create(EmbeddedGradleImporter.class)

  .forProjectDirectory("/path/to/dir").forTasks("task1","task2").withArguments("arg1","arg2")

  .importBuildOutput().as(WebArchive.class);

```



Gradle Importer full usage example can be found at [https://github.com/mmatloka/arquillian-gradle-sample](https://github.com/mmatloka/arquillian-gradle-sample).



### Issues and Improvements



If you encounter any issues or have suggestions for improving ShrinkWrap Resolver, please report them on our issue tracker at [SHRINKRES](https://issues.redhat.com/projects/SHRINKRES/issues) project.