Examples of WaveletFederationListener

org.waveprotocol.wave.federation.WaveletFederationListener
The WaveletFederationListener is an interface that should be implemented by listeners, or services interested in receiving updates about wavelets. It is used to pass messages downstream with the intention of eventually reaching an interested party. This interface forms one half of the Federation Bus when paired with a WaveletFederationProvider. This should be implemented by both the Wavelet Server and the Federation Host. The Wavelet Server is interested in receiving updates from the Federation Remote, where they are pushed by authoritative servers. And, the Federation Host may serve updates pushed to it from the Wavelet Server. @author jochen@google.com (Jochen Bekmann)

Examples of org.waveprotocol.wave.federation.WaveletFederationListener

   * Listener for notifications coming from the Federation Remote. For now we accept updates
   * for wavelets on any domain.
   */
  @Override
  public WaveletFederationListener listenerForDomain(final String domain) {
    return new WaveletFederationListener() {
      @Override
      public void waveletDeltaUpdate(final WaveletName waveletName,
          List<ByteString> deltas, final WaveletUpdateCallback callback) {
        Preconditions.checkArgument(!deltas.isEmpty());

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Examples of org.waveprotocol.wave.federation.WaveletFederationListener

        callback.onFailure(FederationErrors.badRequest(
            "Couldn't decode wavelet name: " + waveletUpdate.attributeValue("wavelet-name")));
        continue;
      }


      WaveletFederationListener listener =
          updatesListenerFactory.listenerForDomain(waveletName.waveletId.getDomain());


      // Submit all applied deltas to the domain-focused listener.
      ImmutableList.Builder<ByteString> builder = ImmutableList.builder();
      for (Element appliedDeltaElement :
          XmppUtil.toSafeElementList(waveletUpdate.elements("applied-delta"))) {
        builder.add(Base64Util.decode(appliedDeltaElement.getText()));
      }
      ImmutableList<ByteString> deltas = builder.build();
      if (!deltas.isEmpty()) {
        callbackCount.incrementAndGet(); // Increment required callbacks.
        listener.waveletDeltaUpdate(waveletName, deltas, callback);
      }


      // Optionally submit any received last committed notice.
      Element commitNoticeElement = waveletUpdate.element("commit-notice");
      if (commitNoticeElement != null) {
        ProtocolHashedVersion version = ProtocolHashedVersion.newBuilder()
            .setHistoryHash(Base64Util.decode(commitNoticeElement.attributeValue("history-hash")))
            .setVersion(Long.parseLong(commitNoticeElement.attributeValue("version"))).build();
        callbackCount.incrementAndGet(); // Increment required callbacks.
        listener.waveletCommitUpdate(waveletName, version, callback);
      }
    }


    // Release sentinel so that 'expected' callbacks from the WS don't invoke
    // sending a receipt.

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Examples of org.waveprotocol.wave.federation.WaveletFederationListener

 */
public class NoOpFederationHost implements WaveletFederationListener.Factory {


  @Override
  public WaveletFederationListener listenerForDomain(String domain) {
    return new WaveletFederationListener() {
      @Override
      public void waveletDeltaUpdate(WaveletName waveletName, List<ByteString> deltas,
          WaveletUpdateCallback callback) {
        callback.onFailure(FederationErrors.badRequest("Federation is not enabled!"));
      }

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Examples of org.waveprotocol.wave.federation.WaveletFederationListener

 */
public class NoOpFederationHost implements WaveletFederationListener.Factory {


  @Override
  public WaveletFederationListener listenerForDomain(String domain) {
    return new WaveletFederationListener() {
      @Override
      public void waveletDeltaUpdate(WaveletName waveletName, List<ByteString> deltas,
          WaveletUpdateCallback callback) {
        callback.onFailure(FederationErrors.badRequest("Federation is not enabled!"));
      }

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Examples of org.waveprotocol.wave.federation.WaveletFederationListener

        callback.onFailure(FederationErrors.badRequest(
            "Couldn't decode wavelet name: " + waveletUpdate.attributeValue("wavelet-name")));
        continue;
      }


      WaveletFederationListener listener =
          updatesListenerFactory.listenerForDomain(waveletName.waveletId.getDomain());


      // Submit all applied deltas to the domain-focused listener.
      ImmutableList.Builder<ByteString> builder = ImmutableList.builder();
      for (Element appliedDeltaElement :
          XmppUtil.toSafeElementList(waveletUpdate.elements("applied-delta"))) {
        builder.add(Base64Util.decode(appliedDeltaElement.getText()));
      }
      ImmutableList<ByteString> deltas = builder.build();
      if (!deltas.isEmpty()) {
        callbackCount.incrementAndGet(); // Increment required callbacks.
        listener.waveletDeltaUpdate(waveletName, deltas, callback);
      }


      // Optionally submit any received last committed notice.
      Element commitNoticeElement = waveletUpdate.element("commit-notice");
      if (commitNoticeElement != null) {
        ProtocolHashedVersion version = ProtocolHashedVersion.newBuilder()
            .setHistoryHash(Base64Util.decode(commitNoticeElement.attributeValue("history-hash")))
            .setVersion(Long.parseLong(commitNoticeElement.attributeValue("version"))).build();
        callbackCount.incrementAndGet(); // Increment required callbacks.
        listener.waveletCommitUpdate(waveletName, version, callback);
      }
    }


    // Release sentinel so that 'expected' callbacks from the WS don't invoke
    // sending a receipt.

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Examples of org.waveprotocol.wave.federation.WaveletFederationListener

   * Listener for notifications coming from the Federation Remote. For now we accept updates
   * for wavelets on any domain.
   */
  @Override
  public WaveletFederationListener listenerForDomain(final String domain) {
    return new WaveletFederationListener() {
      @Override
      public void waveletDeltaUpdate(final WaveletName waveletName,
          List<ByteString> deltas, final WaveletUpdateCallback callback) {
        Preconditions.checkArgument(!deltas.isEmpty());

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