Examples with Iterables.filter com.google.common.collect.Iterables.filter used on opensource projects

Example 1 with Iterables.filter

use of com.google.common.collect.Iterables.filter in project cassandra by apache.

the class HintsService method writeForAllReplicas.

/**
 * Write a hint for all replicas. Used to re-dispatch hints whose destination is either missing or no longer correct.
 */
void writeForAllReplicas(Hint hint) {
    String keyspaceName = hint.mutation.getKeyspaceName();
    Token token = hint.mutation.key().getToken();
    EndpointsForToken replicas = ReplicaLayout.forTokenWriteLiveAndDown(Keyspace.open(keyspaceName), token).all();
    // judicious use of streams: eagerly materializing probably cheaper
    // than performing filters / translations 2x extra via Iterables.filter/transform
    List<UUID> hostIds = replicas.stream().filter(replica -> StorageProxy.shouldHint(replica, false)).map(replica -> StorageService.instance.getHostIdForEndpoint(replica.endpoint())).collect(Collectors.toList());
    write(hostIds, hint);
}