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.

    final RepositoryItemUidLock fromUidLock = fromUid.getLock();


    final RepositoryItemUidLock toUidLock = toUid.getLock();


    fromUidLock.lock(Action.read);
    toUidLock.lock(Action.create);


    try {
      StorageItem item = retrieveItem(fromTask, from);


      if (StorageFileItem.class.isAssignableFrom(item.getClass())) {

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    final RepositoryItemUid uid = createUid(request.getRequestPath());


    final RepositoryItemUidLock uidLock = uid.getLock();


    uidLock.lock(Action.delete);


    try {
      StorageItem item = null;
      try {
        // determine is the thing to be deleted a collection or not

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    // shared lock
    final RepositoryItemUid uploaderUid = createUid(item.getPath() + ".storeItem()");


    final RepositoryItemUidLock uidUploaderLock = uploaderUid.getLock();


    uidUploaderLock.lock(Action.create);


    final Action action = getResultingActionOnWrite(item.getResourceStoreRequest());


    try {
      // NEXUS-4550: we are shared-locking the actual UID (to not prevent downloaders while

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      // but we exclusive lock uploaders to serialize them!
      // And the LS has to take care of whatever stricter locking it has to use or not
      // Think: RDBMS LS or some trickier LS implementations for example
      final RepositoryItemUidLock uidLock = uid.getLock();


      uidLock.lock(Action.read);


      try {
        // store it
        getLocalStorage().storeItem(this, item);
      }

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  protected <R> R doReadProtected(final Callable<R> callable)
      throws IOException
  {
    final RepositoryItemUidLock lock = getRepositoryItemUid().getLock();
    lock.lock(Action.read);
    try {
      try {
        return callable.call();
      }
      catch (IOException e) {

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            "Caching item " + item.getRepositoryItemUid().toString() + " in local storage of repository.");
      }


      final RepositoryItemUidLock itemLock = item.getRepositoryItemUid().getLock();


      itemLock.lock(Action.create);


      final Action action;


      try {
        action = getResultingActionOnWrite(item.getResourceStoreRequest());

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    final RepositoryItemUid itemUid = createUid(request.getRequestPath());


    final RepositoryItemUidLock itemUidLock = itemUid.getLock();


    itemUidLock.lock(Action.read);


    try {
      if (!getRepositoryKind().isFacetAvailable(ProxyRepository.class)) {
        // we have no proxy facet, just get 'em!
        return super.doRetrieveItem(request);

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        // we are a proxy, and we either don't have local copy or is stale, we need to
        // go remote and potentially check for new version of file, but we still don't know
        // will we actually fetch it (since aging != remote file changed!)
        // BUT, from this point on, we want to _serialize_ access, so upgrade to CREATE lock


        itemUidLock.lock(Action.create);


        try {
          // check local copy again, we were maybe blocked for a download, and we need to
          // recheck local copy after we acquired exclusive lock
          if (!request.isRequestRemoteOnly()) {

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    final RepositoryItemUid itemUid = createUid(request.getRequestPath());


    final RepositoryItemUidLock itemUidLock = itemUid.getLock();


    // all this remote download happens in exclusive lock
    itemUidLock.lock(Action.create);


    try {
      List<String> remoteUrls = getRemoteUrls(request);


      List<RepositoryItemValidationEvent> events = new ArrayList<>();

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  private void addItemToIndex(Repository repository, StorageItem item, IndexingContext context)
      throws LocalStorageException, IOException
  {
    final RepositoryItemUidLock uidLock = item.getRepositoryItemUid().getLock();


    uidLock.lock(Action.read);


    try {


      ArtifactContext ac = null;

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