Examples with NameUtils.getStreamForReaderGroup io.pravega.shared.NameUtils.getStreamForReaderGroup used on opensource projects

Example 1 with NameUtils.getStreamForReaderGroup

use of io.pravega.shared.NameUtils.getStreamForReaderGroup in project pravega by pravega.

the class ReaderGroupManagerImpl method deleteReaderGroup.

@Override
public void deleteReaderGroup(String groupName) {
    UUID readerGroupId = null;
    ReaderGroupConfig syncConfig = null;
    try {
        @Cleanup StateSynchronizer<ReaderGroupState> synchronizer = clientFactory.createStateSynchronizer(NameUtils.getStreamForReaderGroup(groupName), new ReaderGroupStateUpdatesSerializer(), new ReaderGroupStateInitSerializer(), SynchronizerConfig.builder().build());
        synchronizer.fetchUpdates();
        syncConfig = synchronizer.getState().getConfig();
        readerGroupId = syncConfig.getReaderGroupId();
        if (ReaderGroupConfig.DEFAULT_UUID.equals(syncConfig.getReaderGroupId()) && ReaderGroupConfig.DEFAULT_GENERATION == syncConfig.getGeneration()) {
            // migrate RG case
            try {
                controller.getReaderGroupConfig(scope, groupName).thenCompose(conf -> controller.deleteReaderGroup(scope, groupName, conf.getReaderGroupId())).join();
            } catch (ReaderGroupNotFoundException ex) {
                controller.sealStream(scope, getStreamForReaderGroup(groupName)).thenCompose(b -> controller.deleteStream(scope, getStreamForReaderGroup(groupName))).exceptionally(e -> {
                    log.warn("Failed to delete ReaderGroup Stream {}", getStreamForReaderGroup(groupName), e);
                    throw Exceptions.sneakyThrow(e);
                }).join();
            }
            return;
        }
    } catch (InvalidStreamException ex) {
        log.warn("State-Synchronizer Stream for ReaderGroup {} was not found.", NameUtils.getScopedReaderGroupName(scope, groupName));
        // if the State Synchronizer Stream was deleted, but the RG still exists, get Id from Controller
        readerGroupId = getAndHandleExceptions(controller.getReaderGroupConfig(scope, groupName), RuntimeException::new).getReaderGroupId();
    }
    // normal delete
    getAndHandleExceptions(controller.deleteReaderGroup(scope, groupName, readerGroupId), RuntimeException::new);
}