Examples with ReplicaGetRequest com.couchbase.client.core.msg.kv.ReplicaGetRequest used on opensource projects

Example 1 with ReplicaGetRequest

use of com.couchbase.client.core.msg.kv.ReplicaGetRequest in project couchbase-jvm-clients by couchbase.

the class ReplicaHelper method getAllReplicasRequests.

/**
 * Helper method to assemble a stream of requests to the active and all replicas
 *
 * @param core the core to execute the request
 * @param collectionIdentifier the collection containing the document
 * @param documentId the ID of the document
 * @param clientContext (nullable) client context info
 * @param retryStrategy the retry strategy to use
 * @param timeout the timeout until we need to stop the get all replicas
 * @param parent the "get all/any replicas" request span
 * @return a stream of requests.
 */
public static CompletableFuture<Stream<GetRequest>> getAllReplicasRequests(final Core core, final CollectionIdentifier collectionIdentifier, final String documentId, final Map<String, Object> clientContext, final RetryStrategy retryStrategy, final Duration timeout, final RequestSpan parent) {
    notNullOrEmpty(documentId, "Id");
    final CoreContext coreContext = core.context();
    final CoreEnvironment environment = coreContext.environment();
    final BucketConfig config = core.clusterConfig().bucketConfig(collectionIdentifier.bucket());
    if (config instanceof CouchbaseBucketConfig) {
        int numReplicas = ((CouchbaseBucketConfig) config).numberOfReplicas();
        List<GetRequest> requests = new ArrayList<>(numReplicas + 1);
        RequestSpan span = environment.requestTracer().requestSpan(TracingIdentifiers.SPAN_REQUEST_KV_GET, parent);
        GetRequest activeRequest = new GetRequest(documentId, timeout, coreContext, collectionIdentifier, retryStrategy, span);
        activeRequest.context().clientContext(clientContext);
        requests.add(activeRequest);
        for (short replica = 1; replica <= numReplicas; replica++) {
            RequestSpan replicaSpan = environment.requestTracer().requestSpan(TracingIdentifiers.SPAN_REQUEST_KV_GET_REPLICA, parent);
            ReplicaGetRequest replicaRequest = new ReplicaGetRequest(documentId, timeout, coreContext, collectionIdentifier, retryStrategy, replica, replicaSpan);
            replicaRequest.context().clientContext(clientContext);
            requests.add(replicaRequest);
        }
        return CompletableFuture.completedFuture(requests.stream());
    } else if (config == null) {
        // no bucket config found, it might be in-flight being opened so we need to reschedule the operation until
        // the timeout fires!
        final Duration retryDelay = Duration.ofMillis(100);
        final CompletableFuture<Stream<GetRequest>> future = new CompletableFuture<>();
        coreContext.environment().timer().schedule(() -> {
            getAllReplicasRequests(core, collectionIdentifier, documentId, clientContext, retryStrategy, timeout.minus(retryDelay), parent).whenComplete((getRequestStream, throwable) -> {
                if (throwable != null) {
                    future.completeExceptionally(throwable);
                } else {
                    future.complete(getRequestStream);
                }
            });
        }, retryDelay);
        return future;
    } else {
        final CompletableFuture<Stream<GetRequest>> future = new CompletableFuture<>();
        future.completeExceptionally(CommonExceptions.getFromReplicaNotCouchbaseBucket());
        return future;
    }
}

Example 2 with ReplicaGetRequest

use of com.couchbase.client.core.msg.kv.ReplicaGetRequest in project couchbase-jvm-clients by couchbase.

the class ReplicaHelper method getAllReplicasReactive.

/**
 * @param clientContext (nullable)
 * @param parentSpan (nullable)
 */
public static Flux<GetReplicaResponse> getAllReplicasReactive(final Core core, final CollectionIdentifier collectionIdentifier, final String documentId, final Duration timeout, final RetryStrategy retryStrategy, Map<String, Object> clientContext, RequestSpan parentSpan) {
    notNullOrEmpty(documentId, "Id", () -> ReducedKeyValueErrorContext.create(documentId, collectionIdentifier));
    CoreEnvironment env = core.context().environment();
    RequestSpan getAllSpan = env.requestTracer().requestSpan(TracingIdentifiers.SPAN_GET_ALL_REPLICAS, parentSpan);
    getAllSpan.attribute(TracingIdentifiers.ATTR_SYSTEM, TracingIdentifiers.ATTR_SYSTEM_COUCHBASE);
    return Reactor.toMono(() -> getAllReplicasRequests(core, collectionIdentifier, documentId, clientContext, retryStrategy, timeout, getAllSpan)).flux().flatMap(Flux::fromStream).flatMap(request -> Reactor.wrap(request, get(core, request), true).onErrorResume(t -> {
        env.eventBus().publish(new IndividualReplicaGetFailedEvent(request.context()));
        // Swallow any errors from individual replicas
        return Mono.empty();
    }).map(response -> new GetReplicaResponse(response, request instanceof ReplicaGetRequest))).doFinally(signalType -> getAllSpan.end());
}

Example 3 with ReplicaGetRequest

use of com.couchbase.client.core.msg.kv.ReplicaGetRequest in project couchbase-jvm-clients by couchbase.

the class ReplicaHelper method getAllReplicasAsync.

/**
 * Reads from replicas or the active node based on the options and returns the results as a list
 * of futures that might complete or fail.
 *
 * @param clientContext (nullable)
 * @param parentSpan (nullable)
 * @param responseMapper converts the GetReplicaResponse to the client's native result type
 * @return a list of results from the active and the replica.
 */
public static <R> CompletableFuture<List<CompletableFuture<R>>> getAllReplicasAsync(final Core core, final CollectionIdentifier collectionIdentifier, final String documentId, final Duration timeout, final RetryStrategy retryStrategy, final Map<String, Object> clientContext, final RequestSpan parentSpan, final Function<GetReplicaResponse, R> responseMapper) {
    CoreEnvironment env = core.context().environment();
    RequestSpan getAllSpan = env.requestTracer().requestSpan(TracingIdentifiers.SPAN_GET_ALL_REPLICAS, parentSpan);
    getAllSpan.attribute(TracingIdentifiers.ATTR_SYSTEM, TracingIdentifiers.ATTR_SYSTEM_COUCHBASE);
    return getAllReplicasRequests(core, collectionIdentifier, documentId, clientContext, retryStrategy, timeout, getAllSpan).thenApply(stream -> stream.map(request -> get(core, request).thenApply(response -> new GetReplicaResponse(response, request instanceof ReplicaGetRequest)).thenApply(responseMapper)).collect(Collectors.toList())).whenComplete((completableFutures, throwable) -> {
        final AtomicInteger toComplete = new AtomicInteger(completableFutures.size());
        for (CompletableFuture<R> cf : completableFutures) {
            cf.whenComplete((a, b) -> {
                if (toComplete.decrementAndGet() == 0) {
                    getAllSpan.end();
                }
            });
        }
    });
}