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org.eclipse.aether.internal.impl.DefaultMetadataResolver Maven / Gradle / Ivy
/*******************************************************************************
* Copyright (c) 2010, 2014 Sonatype, Inc.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Sonatype, Inc. - initial API and implementation
*******************************************************************************/
package org.eclipse.aether.internal.impl;
import java.io.File;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.Executor;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
import javax.inject.Inject;
import javax.inject.Named;
import org.eclipse.aether.RepositoryEvent;
import org.eclipse.aether.RepositoryEvent.EventType;
import org.eclipse.aether.RepositorySystemSession;
import org.eclipse.aether.RequestTrace;
import org.eclipse.aether.SyncContext;
import org.eclipse.aether.impl.MetadataResolver;
import org.eclipse.aether.impl.OfflineController;
import org.eclipse.aether.impl.RemoteRepositoryManager;
import org.eclipse.aether.impl.RepositoryConnectorProvider;
import org.eclipse.aether.impl.RepositoryEventDispatcher;
import org.eclipse.aether.impl.SyncContextFactory;
import org.eclipse.aether.impl.UpdateCheck;
import org.eclipse.aether.impl.UpdateCheckManager;
import org.eclipse.aether.metadata.Metadata;
import org.eclipse.aether.repository.ArtifactRepository;
import org.eclipse.aether.repository.LocalMetadataRegistration;
import org.eclipse.aether.repository.LocalMetadataRequest;
import org.eclipse.aether.repository.LocalMetadataResult;
import org.eclipse.aether.repository.LocalRepository;
import org.eclipse.aether.repository.LocalRepositoryManager;
import org.eclipse.aether.repository.RemoteRepository;
import org.eclipse.aether.repository.RepositoryPolicy;
import org.eclipse.aether.resolution.MetadataRequest;
import org.eclipse.aether.resolution.MetadataResult;
import org.eclipse.aether.spi.connector.MetadataDownload;
import org.eclipse.aether.spi.connector.RepositoryConnector;
import org.eclipse.aether.spi.locator.Service;
import org.eclipse.aether.spi.locator.ServiceLocator;
import org.eclipse.aether.spi.log.Logger;
import org.eclipse.aether.spi.log.LoggerFactory;
import org.eclipse.aether.spi.log.NullLoggerFactory;
import org.eclipse.aether.transfer.MetadataNotFoundException;
import org.eclipse.aether.transfer.MetadataTransferException;
import org.eclipse.aether.transfer.NoRepositoryConnectorException;
import org.eclipse.aether.transfer.RepositoryOfflineException;
import org.eclipse.aether.util.ConfigUtils;
import org.eclipse.aether.util.concurrency.RunnableErrorForwarder;
import org.eclipse.aether.util.concurrency.WorkerThreadFactory;
/**
*/
@Named
public class DefaultMetadataResolver
implements MetadataResolver, Service
{
private static final String CONFIG_PROP_THREADS = "aether.metadataResolver.threads";
private Logger logger = NullLoggerFactory.LOGGER;
private RepositoryEventDispatcher repositoryEventDispatcher;
private UpdateCheckManager updateCheckManager;
private RepositoryConnectorProvider repositoryConnectorProvider;
private RemoteRepositoryManager remoteRepositoryManager;
private SyncContextFactory syncContextFactory;
private OfflineController offlineController;
public DefaultMetadataResolver()
{
// enables default constructor
}
@Inject
DefaultMetadataResolver( RepositoryEventDispatcher repositoryEventDispatcher,
UpdateCheckManager updateCheckManager,
RepositoryConnectorProvider repositoryConnectorProvider,
RemoteRepositoryManager remoteRepositoryManager, SyncContextFactory syncContextFactory,
OfflineController offlineController, LoggerFactory loggerFactory )
{
setRepositoryEventDispatcher( repositoryEventDispatcher );
setUpdateCheckManager( updateCheckManager );
setRepositoryConnectorProvider( repositoryConnectorProvider );
setRemoteRepositoryManager( remoteRepositoryManager );
setSyncContextFactory( syncContextFactory );
setOfflineController( offlineController );
setLoggerFactory( loggerFactory );
}
public void initService( ServiceLocator locator )
{
setLoggerFactory( locator.getService( LoggerFactory.class ) );
setRepositoryEventDispatcher( locator.getService( RepositoryEventDispatcher.class ) );
setUpdateCheckManager( locator.getService( UpdateCheckManager.class ) );
setRepositoryConnectorProvider( locator.getService( RepositoryConnectorProvider.class ) );
setRemoteRepositoryManager( locator.getService( RemoteRepositoryManager.class ) );
setSyncContextFactory( locator.getService( SyncContextFactory.class ) );
setOfflineController( locator.getService( OfflineController.class ) );
}
public DefaultMetadataResolver setLoggerFactory( LoggerFactory loggerFactory )
{
this.logger = NullLoggerFactory.getSafeLogger( loggerFactory, getClass() );
return this;
}
public DefaultMetadataResolver setRepositoryEventDispatcher( RepositoryEventDispatcher repositoryEventDispatcher )
{
if ( repositoryEventDispatcher == null )
{
throw new IllegalArgumentException( "repository event dispatcher has not been specified" );
}
this.repositoryEventDispatcher = repositoryEventDispatcher;
return this;
}
public DefaultMetadataResolver setUpdateCheckManager( UpdateCheckManager updateCheckManager )
{
if ( updateCheckManager == null )
{
throw new IllegalArgumentException( "update check manager has not been specified" );
}
this.updateCheckManager = updateCheckManager;
return this;
}
public DefaultMetadataResolver setRepositoryConnectorProvider( RepositoryConnectorProvider repositoryConnectorProvider )
{
if ( repositoryConnectorProvider == null )
{
throw new IllegalArgumentException( "repository connector provider has not been specified" );
}
this.repositoryConnectorProvider = repositoryConnectorProvider;
return this;
}
public DefaultMetadataResolver setRemoteRepositoryManager( RemoteRepositoryManager remoteRepositoryManager )
{
if ( remoteRepositoryManager == null )
{
throw new IllegalArgumentException( "remote repository manager has not been specified" );
}
this.remoteRepositoryManager = remoteRepositoryManager;
return this;
}
public DefaultMetadataResolver setSyncContextFactory( SyncContextFactory syncContextFactory )
{
if ( syncContextFactory == null )
{
throw new IllegalArgumentException( "sync context factory has not been specified" );
}
this.syncContextFactory = syncContextFactory;
return this;
}
public DefaultMetadataResolver setOfflineController( OfflineController offlineController )
{
if ( offlineController == null )
{
throw new IllegalArgumentException( "offline controller has not been specified" );
}
this.offlineController = offlineController;
return this;
}
public List resolveMetadata( RepositorySystemSession session,
Collection requests )
{
SyncContext syncContext = syncContextFactory.newInstance( session, false );
try
{
Collection metadata = new ArrayList( requests.size() );
for ( MetadataRequest request : requests )
{
metadata.add( request.getMetadata() );
}
syncContext.acquire( null, metadata );
return resolve( session, requests );
}
finally
{
syncContext.close();
}
}
private List resolve( RepositorySystemSession session,
Collection requests )
{
List results = new ArrayList( requests.size() );
List tasks = new ArrayList( requests.size() );
Map localLastUpdates = new HashMap();
for ( MetadataRequest request : requests )
{
RequestTrace trace = RequestTrace.newChild( request.getTrace(), request );
MetadataResult result = new MetadataResult( request );
results.add( result );
Metadata metadata = request.getMetadata();
RemoteRepository repository = request.getRepository();
if ( repository == null )
{
LocalRepository localRepo = session.getLocalRepositoryManager().getRepository();
metadataResolving( session, trace, metadata, localRepo );
File localFile = getLocalFile( session, metadata );
if ( localFile != null )
{
metadata = metadata.setFile( localFile );
result.setMetadata( metadata );
}
else
{
result.setException( new MetadataNotFoundException( metadata, localRepo ) );
}
metadataResolved( session, trace, metadata, localRepo, result.getException() );
continue;
}
List repositories = getEnabledSourceRepositories( repository, metadata.getNature() );
if ( repositories.isEmpty() )
{
continue;
}
metadataResolving( session, trace, metadata, repository );
LocalRepositoryManager lrm = session.getLocalRepositoryManager();
LocalMetadataRequest localRequest =
new LocalMetadataRequest( metadata, repository, request.getRequestContext() );
LocalMetadataResult lrmResult = lrm.find( session, localRequest );
File metadataFile = lrmResult.getFile();
try
{
Utils.checkOffline( session, offlineController, repository );
}
catch ( RepositoryOfflineException e )
{
if ( metadataFile != null )
{
metadata = metadata.setFile( metadataFile );
result.setMetadata( metadata );
}
else
{
String msg =
"Cannot access " + repository.getId() + " (" + repository.getUrl()
+ ") in offline mode and the metadata " + metadata
+ " has not been downloaded from it before";
result.setException( new MetadataNotFoundException( metadata, repository, msg, e ) );
}
metadataResolved( session, trace, metadata, repository, result.getException() );
continue;
}
Long localLastUpdate = null;
if ( request.isFavorLocalRepository() )
{
File localFile = getLocalFile( session, metadata );
localLastUpdate = localLastUpdates.get( localFile );
if ( localLastUpdate == null )
{
localLastUpdate = localFile != null ? localFile.lastModified() : 0;
localLastUpdates.put( localFile, localLastUpdate );
}
}
List> checks =
new ArrayList>();
Exception exception = null;
for ( RemoteRepository repo : repositories )
{
UpdateCheck check =
new UpdateCheck();
check.setLocalLastUpdated( ( localLastUpdate != null ) ? localLastUpdate : 0 );
check.setItem( metadata );
// use 'main' installation file for the check (-> use requested repository)
File checkFile =
new File(
session.getLocalRepository().getBasedir(),
session.getLocalRepositoryManager().getPathForRemoteMetadata( metadata, repository,
request.getRequestContext() ) );
check.setFile( checkFile );
check.setRepository( repository );
check.setAuthoritativeRepository( repo );
check.setPolicy( getPolicy( session, repo, metadata.getNature() ).getUpdatePolicy() );
if ( lrmResult.isStale() )
{
checks.add( check );
}
else
{
updateCheckManager.checkMetadata( session, check );
if ( check.isRequired() )
{
checks.add( check );
}
else if ( exception == null )
{
exception = check.getException();
}
}
}
if ( !checks.isEmpty() )
{
RepositoryPolicy policy = getPolicy( session, repository, metadata.getNature() );
// install path may be different from lookup path
File installFile =
new File(
session.getLocalRepository().getBasedir(),
session.getLocalRepositoryManager().getPathForRemoteMetadata( metadata,
request.getRepository(),
request.getRequestContext() ) );
ResolveTask task =
new ResolveTask( session, trace, result, installFile, checks, policy.getChecksumPolicy() );
tasks.add( task );
}
else
{
result.setException( exception );
if ( metadataFile != null )
{
metadata = metadata.setFile( metadataFile );
result.setMetadata( metadata );
}
metadataResolved( session, trace, metadata, repository, result.getException() );
}
}
if ( !tasks.isEmpty() )
{
int threads = ConfigUtils.getInteger( session, 4, CONFIG_PROP_THREADS );
Executor executor = getExecutor( Math.min( tasks.size(), threads ) );
try
{
RunnableErrorForwarder errorForwarder = new RunnableErrorForwarder();
for ( ResolveTask task : tasks )
{
executor.execute( errorForwarder.wrap( task ) );
}
errorForwarder.await();
for ( ResolveTask task : tasks )
{
task.result.setException( task.exception );
}
}
finally
{
shutdown( executor );
}
for ( ResolveTask task : tasks )
{
Metadata metadata = task.request.getMetadata();
// re-lookup metadata for resolve
LocalMetadataRequest localRequest =
new LocalMetadataRequest( metadata, task.request.getRepository(), task.request.getRequestContext() );
File metadataFile = session.getLocalRepositoryManager().find( session, localRequest ).getFile();
if ( metadataFile != null )
{
metadata = metadata.setFile( metadataFile );
task.result.setMetadata( metadata );
}
if ( task.result.getException() == null )
{
task.result.setUpdated( true );
}
metadataResolved( session, task.trace, metadata, task.request.getRepository(),
task.result.getException() );
}
}
return results;
}
private File getLocalFile( RepositorySystemSession session, Metadata metadata )
{
LocalRepositoryManager lrm = session.getLocalRepositoryManager();
LocalMetadataResult localResult = lrm.find( session, new LocalMetadataRequest( metadata, null, null ) );
File localFile = localResult.getFile();
return localFile;
}
private List getEnabledSourceRepositories( RemoteRepository repository, Metadata.Nature nature )
{
List repositories = new ArrayList();
if ( repository.isRepositoryManager() )
{
for ( RemoteRepository repo : repository.getMirroredRepositories() )
{
if ( isEnabled( repo, nature ) )
{
repositories.add( repo );
}
}
}
else if ( isEnabled( repository, nature ) )
{
repositories.add( repository );
}
return repositories;
}
private boolean isEnabled( RemoteRepository repository, Metadata.Nature nature )
{
if ( !Metadata.Nature.SNAPSHOT.equals( nature ) && repository.getPolicy( false ).isEnabled() )
{
return true;
}
if ( !Metadata.Nature.RELEASE.equals( nature ) && repository.getPolicy( true ).isEnabled() )
{
return true;
}
return false;
}
private RepositoryPolicy getPolicy( RepositorySystemSession session, RemoteRepository repository,
Metadata.Nature nature )
{
boolean releases = !Metadata.Nature.SNAPSHOT.equals( nature );
boolean snapshots = !Metadata.Nature.RELEASE.equals( nature );
return remoteRepositoryManager.getPolicy( session, repository, releases, snapshots );
}
private void metadataResolving( RepositorySystemSession session, RequestTrace trace, Metadata metadata,
ArtifactRepository repository )
{
RepositoryEvent.Builder event = new RepositoryEvent.Builder( session, EventType.METADATA_RESOLVING );
event.setTrace( trace );
event.setMetadata( metadata );
event.setRepository( repository );
repositoryEventDispatcher.dispatch( event.build() );
}
private void metadataResolved( RepositorySystemSession session, RequestTrace trace, Metadata metadata,
ArtifactRepository repository, Exception exception )
{
RepositoryEvent.Builder event = new RepositoryEvent.Builder( session, EventType.METADATA_RESOLVED );
event.setTrace( trace );
event.setMetadata( metadata );
event.setRepository( repository );
event.setException( exception );
event.setFile( metadata.getFile() );
repositoryEventDispatcher.dispatch( event.build() );
}
private void metadataDownloading( RepositorySystemSession session, RequestTrace trace, Metadata metadata,
ArtifactRepository repository )
{
RepositoryEvent.Builder event = new RepositoryEvent.Builder( session, EventType.METADATA_DOWNLOADING );
event.setTrace( trace );
event.setMetadata( metadata );
event.setRepository( repository );
repositoryEventDispatcher.dispatch( event.build() );
}
private void metadataDownloaded( RepositorySystemSession session, RequestTrace trace, Metadata metadata,
ArtifactRepository repository, File file, Exception exception )
{
RepositoryEvent.Builder event = new RepositoryEvent.Builder( session, EventType.METADATA_DOWNLOADED );
event.setTrace( trace );
event.setMetadata( metadata );
event.setRepository( repository );
event.setException( exception );
event.setFile( file );
repositoryEventDispatcher.dispatch( event.build() );
}
private Executor getExecutor( int threads )
{
if ( threads <= 1 )
{
return new Executor()
{
public void execute( Runnable command )
{
command.run();
}
};
}
else
{
return new ThreadPoolExecutor( threads, threads, 3, TimeUnit.SECONDS, new LinkedBlockingQueue(),
new WorkerThreadFactory( null ) );
}
}
private void shutdown( Executor executor )
{
if ( executor instanceof ExecutorService )
{
( (ExecutorService) executor ).shutdown();
}
}
class ResolveTask
implements Runnable
{
final RepositorySystemSession session;
final RequestTrace trace;
final MetadataResult result;
final MetadataRequest request;
final File metadataFile;
final String policy;
final List> checks;
volatile MetadataTransferException exception;
public ResolveTask( RepositorySystemSession session, RequestTrace trace, MetadataResult result,
File metadataFile, List> checks,
String policy )
{
this.session = session;
this.trace = trace;
this.result = result;
this.request = result.getRequest();
this.metadataFile = metadataFile;
this.policy = policy;
this.checks = checks;
}
public void run()
{
Metadata metadata = request.getMetadata();
RemoteRepository requestRepository = request.getRepository();
metadataDownloading( session, trace, metadata, requestRepository );
try
{
List repositories = new ArrayList();
for ( UpdateCheck check : checks )
{
repositories.add( check.getAuthoritativeRepository() );
}
MetadataDownload download = new MetadataDownload();
download.setMetadata( metadata );
download.setRequestContext( request.getRequestContext() );
download.setFile( metadataFile );
download.setChecksumPolicy( policy );
download.setRepositories( repositories );
download.setListener( SafeTransferListener.wrap( session, logger ) );
download.setTrace( trace );
RepositoryConnector connector =
repositoryConnectorProvider.newRepositoryConnector( session, requestRepository );
try
{
connector.get( null, Arrays.asList( download ) );
}
finally
{
connector.close();
}
exception = download.getException();
if ( exception == null )
{
List contexts = Collections.singletonList( request.getRequestContext() );
LocalMetadataRegistration registration =
new LocalMetadataRegistration( metadata, requestRepository, contexts );
session.getLocalRepositoryManager().add( session, registration );
}
else if ( request.isDeleteLocalCopyIfMissing() && exception instanceof MetadataNotFoundException )
{
download.getFile().delete();
}
}
catch ( NoRepositoryConnectorException e )
{
exception = new MetadataTransferException( metadata, requestRepository, e );
}
/*
* NOTE: Touch after registration with local repo to ensure concurrent resolution is not rejected with
* "already updated" via session data when actual update to local repo is still pending.
*/
for ( UpdateCheck check : checks )
{
updateCheckManager.touchMetadata( session, check.setException( exception ) );
}
metadataDownloaded( session, trace, metadata, requestRepository, metadataFile, exception );
}
}
}
