Examples of org.sonatype.nexus.proxy.item.RepositoryItemUidLock.lock()

Class org.sonatype.nexus.proxy.item.RepositoryItemUidLock

Examples of org.sonatype.nexus.proxy.item.RepositoryItemUidLock.lock()

org.sonatype.nexus.proxy.item.RepositoryItemUidLock.lock()
Locks this UID for a given action. Will perform lock upgrade is needed (read -> write). Lock upgrade (ie. create action locking happens after read action already locked) happens, but does not happen atomically! Lock upgrade is actually release all (if any) read lock and then acquire write lock. Once you have exclusive lock, then only you can be sure for unique access.


    // NEXUS-814: we should not delete always
    if (!item.getItemContext().containsKey(SnapshotRemover.MORE_TS_SNAPSHOTS_EXISTS_FOR_GAV)) {
      final RepositoryItemUidLock uidLock = item.getRepositoryItemUid().getLock();


      uidLock.lock(Action.read);


      try {
        getNexusIndexer().deleteArtifactFromIndex(ac, context);
      }
      finally {

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    final RepositoryItemUid uid = createUid(P2Constants.METADATA_LOCK_PATH);
    final RepositoryItemUidLock lock = uid.getLock();


    try {
      // Lock the metadata do be sure that the artifacts are retrieved from consistent paths.
      lock.lock(Action.read);
      try {
        // NOTE - THIS CANNOT be a write action (create/delete/update) as that will force a write lock
        // thus serializing access to this p2 repo. Using a read action here, will block the file from
        // being deleted/updated while retrieving the remote item, and that is all we need.

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        // NOTE - THIS CANNOT be a write action (create/delete/update) as that will force a write lock
        // thus serializing access to this p2 repo. Using a read action here, will block the file from
        // being deleted/updated while retrieving the remote item, and that is all we need.


        // NXCM-2499 temporarily we do put access serialization back here, to avoid all the deadlocks.
        lock.lock(Action.create);
        return super.retrieveItem(fromTask, request);
      }
      finally {
        lock.unlock();
      }

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    // performance, but we avoiding potential deadlocks (this method was synchronized).
    final RepositoryItemUid uid = createUid(P2Constants.METADATA_LOCK_PATH);
    final RepositoryItemUidLock lock = uid.getLock();


    try {
      lock.lock(Action.create);
      if (!hasArtifactMappings) {
        return null;
      }


      if (remoteArtifactMappings == null) {

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  {
    StorageFileItem result = null;


    try {
      final RepositoryItemUidLock itemLock = item.getRepositoryItemUid().getLock();
      itemLock.lock(Action.create);
      try {
        repository.getLocalStorage().storeItem(repository, item);
        repository.removeFromNotFoundCache(item.getResourceStoreRequest());
        final ResourceStoreRequest request = new ResourceStoreRequest(item);
        result = (StorageFileItem) repository.getLocalStorage().retrieveItem(repository, request);

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        }
        finally {
          // release repo
          repoLock.unlock();
          // get back the lock we gave in
          itemLock.lock(Action.read);
        }
      }
      else if (P2Constants.ARTIFACTS_XML.equals(request.getRequestPath())
          || P2Constants.ARTIFACTS_JAR.equals(request.getRequestPath())) {
        try {

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  {
    final RepositoryItemUid uid = createUid(P2Constants.METADATA_LOCK_PATH);
    final RepositoryItemUidLock lock = uid.getLock();


    try {
      lock.lock(Action.read);
      return super.retrieveItem(fromTask, request);
    }
    finally {
      lock.unlock();
    }

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        }
        finally {
          // release repo
          repoLock.unlock();
          // get back the lock we gave in
          itemLock.lock(Action.read);
        }
      }


      // we explicitly do not serve any other metadata files
      throw new ItemNotFoundException(request, repository);

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  {
    final RepositoryItemUid uid = createUid(P2Constants.METADATA_LOCK_PATH);
    final RepositoryItemUidLock lock = uid.getLock();
    final boolean requestGroupLocalOnly = request.isRequestGroupLocalOnly();
    try {
      lock.lock(Action.read);
      request.setRequestGroupLocalOnly(true);
      return super.doRetrieveItem(request);
    }
    finally {
      request.setRequestGroupLocalOnly(requestGroupLocalOnly);

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  {
    final RepositoryItemUid uid = createUid(P2Constants.METADATA_LOCK_PATH);
    final RepositoryItemUidLock lock = uid.getLock();
    final boolean requestGroupLocalOnly = request.isRequestGroupLocalOnly();
    try {
      lock.lock(Action.read);
      request.setRequestGroupLocalOnly(true);
      return super.doListItems(request);
    }
    finally {
      request.setRequestGroupLocalOnly(requestGroupLocalOnly);

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