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StatusRoute.java
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StatusRoute.java
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/*
* Copyright (c) 2017 Contributors to the Eclipse Foundation
*
* See the NOTICE file(s) distributed with this work for additional
* information regarding copyright ownership.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0
*
* SPDX-License-Identifier: EPL-2.0
*/
package org.eclipse.ditto.internal.utils.health.routes;
import static org.apache.pekko.http.javadsl.server.Directives.complete;
import static org.apache.pekko.http.javadsl.server.Directives.get;
import static org.apache.pekko.http.javadsl.server.Directives.path;
import static org.apache.pekko.http.javadsl.server.Directives.pathEndOrSingleSlash;
import static org.apache.pekko.http.javadsl.server.Directives.pathPrefix;
import static org.apache.pekko.http.javadsl.server.Directives.route;
import java.util.function.Supplier;
import org.eclipse.ditto.internal.utils.health.HealthRouteSupplier;
import org.eclipse.ditto.internal.utils.health.cluster.ClusterStatus;
import org.eclipse.ditto.internal.utils.health.status.Status;
import org.apache.pekko.actor.ActorRef;
import org.apache.pekko.actor.ActorSystem;
import org.apache.pekko.http.javadsl.model.ContentTypes;
import org.apache.pekko.http.javadsl.model.HttpResponse;
import org.apache.pekko.http.javadsl.model.StatusCodes;
import org.apache.pekko.http.javadsl.server.Route;
/**
* Builder for creating Pekko HTTP route for {@code /status}.
*/
public final class StatusRoute {
private static final String PATH_STATUS = "status";
private static final String PATH_HEALTH = "health";
private static final String PATH_CLUSTER = "cluster";
private final Supplier<ClusterStatus> clusterStateSupplier;
private final HealthRouteSupplier healthRouteSupplier;
/**
* Constructs the {@code /status} route builder.
*
* @param clusterStateSupplier the supplier to get the cluster state.
* @param healthCheckingActor the HealthCheckingActor to use.
* @param actorSystem the Pekko ActorSystem.
*/
public StatusRoute(final Supplier<ClusterStatus> clusterStateSupplier, final ActorRef healthCheckingActor,
final ActorSystem actorSystem) {
this.clusterStateSupplier = clusterStateSupplier;
this.healthRouteSupplier = new HealthRouteSupplier(healthCheckingActor, actorSystem.log());
}
/**
* Builds the {@code /status} route.
*
* @return the {@code /status} route.
*/
public Route buildStatusRoute() {
return pathPrefix(PATH_STATUS, () -> // /status/*
get(() -> // GET
route(
pathEndOrSingleSlash(() -> // /status
complete(
HttpResponse.create().withStatus(StatusCodes.OK)
.withEntity(ContentTypes.APPLICATION_JSON,
Status.provideStaticStatus().toString())
)
),
path(PATH_HEALTH, healthRouteSupplier), // /status/health
path(PATH_CLUSTER, () -> complete( // /status/cluster
HttpResponse.create().withStatus(StatusCodes.OK)
.withEntity(ContentTypes.APPLICATION_JSON,
clusterStateSupplier.get().toJson().toString()))
)
)
).orElse(complete(StatusCodes.METHOD_NOT_ALLOWED)));
}
}