HeroicResource.java

/*
 * Copyright (c) 2015 Spotify AB.
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package com.spotify.heroic.http;

import com.spotify.heroic.common.GroupMember;
import com.spotify.heroic.common.ServiceInfo;
import com.spotify.heroic.metadata.MetadataBackend;
import com.spotify.heroic.metadata.MetadataManager;
import com.spotify.heroic.metric.MetricBackend;
import com.spotify.heroic.metric.MetricManager;
import com.spotify.heroic.suggest.SuggestBackend;
import com.spotify.heroic.suggest.SuggestManager;

import javax.inject.Inject;
import javax.ws.rs.Consumes;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.Response.Status;
import java.util.ArrayList;
import java.util.List;

@Path("/")
@Produces(MediaType.APPLICATION_JSON)
@Consumes(MediaType.APPLICATION_JSON)
public class HeroicResource {
    private final MetricManager metrics;
    private final MetadataManager metadata;
    private final SuggestManager suggest;
    private final ServiceInfo service;

    @Inject
    public HeroicResource(
        final MetricManager metrics, final MetadataManager metadata, final SuggestManager suggest,
        final ServiceInfo service
    ) {
        this.metrics = metrics;
        this.metadata = metadata;
        this.suggest = suggest;
        this.service = service;
    }

    @GET
    public Response get() {
        return Response.status(Status.OK).entity(service).build();
    }

    @GET
    @Path("/backends")
    public Response getBackends() {
        final List<String> results = new ArrayList<>();

        for (final GroupMember<MetricBackend> b : metrics.groupSet().inspectAll()) {
            results.add(b.toString());
        }

        for (final GroupMember<MetadataBackend> b : metadata.groupSet().inspectAll()) {
            results.add(b.toString());
        }

        for (final GroupMember<SuggestBackend> b : suggest.groupSet().inspectAll()) {
            results.add(b.toString());
        }

        return Response.status(Response.Status.OK).entity(new DataResponse<>(results)).build();
    }
}