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package com.sun.istack.maven;
import org.apache.maven.artifact.repository.ArtifactRepository;
import org.apache.maven.plugin.AbstractMojo;
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.plugins.annotations.LifecyclePhase;
import org.apache.maven.plugins.annotations.Mojo;
import org.eclipse.aether.RepositorySystemSession;
import org.eclipse.aether.artifact.Artifact;
import org.eclipse.aether.artifact.DefaultArtifact;
import org.eclipse.aether.impl.ArtifactResolver;
import org.eclipse.aether.repository.RemoteRepository;
import org.eclipse.aether.resolution.ArtifactRequest;
import org.eclipse.aether.resolution.ArtifactResolutionException;
import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
/**
* Goal which compiles META-INF/services files from various dependencies
*
* @author japod
*
* Goal: metainf-services
*
* Phase: generate-sources
*/
@Mojo(name = "metainf-services", defaultPhase = LifecyclePhase.GENERATE_SOURCES)
public class MetainfServicesCompilerMojo extends AbstractMojo {
/**
* Collection of ArtifactItems to take the META-INF/services from. (ArtifactItem contains groupId,
* artifactId, version)
*
* parameter
* required
* @since 1.0
*/
private List artifactItems;
/**
* Collection of files from META-INF/services to compile
*
* parameter
* required
* @since 1.0
*/
private List providers;
/**
* Destination for the generated service registry files
*
* parameter
* required
* @since 1.0
*/
private File destDir;
/**
* component role="org.apache.maven.artifact.resolver.ArtifactResolver"
* required
* readonly
*/
protected ArtifactResolver artifactResolver;
/**
* parameter expression="${project.remoteArtifactRepositories}"
* readonly
* required
*/
protected List remoteRepositories;
/**
* The current repository/network configuration of Maven.
*
* @parameter default-value="${repositorySystemSession}"
* @readonly
*/
private RepositorySystemSession repoSession;
/**
* parameter expression="${localRepository}"
* readonly
* required
*/
protected ArtifactRepository localRepository;
@Override
public void execute() throws MojoExecutionException {
getLog().info("About to compile META-INF/services files");
getLog().info("Artifact Items = " + artifactItems);
getLog().info("SPIs = " + providers);
getLog().info("dest dir = " + destDir);
File msDir = new File(destDir, "META-INF/services");
boolean created =msDir.mkdirs();
if (!created) {
Logger.getLogger(MetainfServicesCompilerMojo.class.getName()).log(Level.FINE, "Cannot create directory: {0}", msDir);
}
for (String spi : providers) {
PrintWriter registryWriter = null;
try {
File spiRegistry = new File(msDir, spi);
if (spiRegistry.exists()) {
boolean deleted = spiRegistry.delete();
if (!deleted) {
Logger.getLogger(MetainfServicesCompilerMojo.class.getName()).log(Level.FINE, "Cannot delete file: {0}", spiRegistry);
}
}
created = spiRegistry.createNewFile();
if (!created) {
Logger.getLogger(MetainfServicesCompilerMojo.class.getName()).log(Level.FINE, "Cannot create file: {0}", spiRegistry);
}
registryWriter = new PrintWriter(spiRegistry);
ZipFile zipFile = null;
try {
BufferedReader reader = null;
InputStreamReader isReader = null;
for (ArtifactItem ai : artifactItems) {
Artifact artifact;
artifact = new DefaultArtifact(ai.getGroupId(), ai.getArtifactId(), null, ai.getVersion());
// artifact = artifactFactory.createExtensionArtifact(ai.getGroupId(), ai.getArtifactId(), VersionRange.createFromVersion(ai.getVersion()));
ArtifactRequest request = new ArtifactRequest();
request.setArtifact( artifact );
request.setRepositories(remoteRepositories);
artifactResolver.resolveArtifact(repoSession, request);
zipFile = new ZipFile(artifact.getFile());
final ZipEntry servicesEntry = zipFile.getEntry("META-INF/services/" + spi);
if (servicesEntry != null) {
try {
final InputStream inputStream = zipFile.getInputStream(servicesEntry);
isReader = new InputStreamReader(inputStream);
reader = new BufferedReader(isReader);
while (reader.ready()) {
registryWriter.println(reader.readLine());
}
} finally {
if (reader != null) {
reader.close();
}
if (isReader != null) {
isReader.close();
}
}
}
}
} catch (ArtifactResolutionException ex) {
Logger.getLogger(MetainfServicesCompilerMojo.class.getName()).log(Level.SEVERE, null, ex);
throw new MojoExecutionException("Can not resolve artifact!", ex);
} finally {
if (zipFile != null) {
zipFile.close();
}
}
} catch (IOException ex) {
throw new MojoExecutionException("Can not create spi registry file!", ex);
} finally {
if (registryWriter != null) {
registryWriter.close();
}
}
}
}
}
