io.druid.server.http.CoordinatorDynamicConfigsResource.java Source code

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Here is the source code for io.druid.server.http.CoordinatorDynamicConfigsResource.java

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/*
 * Druid - a distributed column store.
 * Copyright 2012 - 2015 Metamarkets Group Inc.
 *
 * Licensed 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 io.druid.server.http;

import io.druid.audit.AuditInfo;
import io.druid.audit.AuditManager;
import io.druid.common.config.JacksonConfigManager;
import io.druid.server.coordinator.CoordinatorDynamicConfig;
import org.joda.time.Interval;

import javax.inject.Inject;
import javax.servlet.http.HttpServletRequest;
import javax.ws.rs.Consumes;
import javax.ws.rs.DefaultValue;
import javax.ws.rs.GET;
import javax.ws.rs.HeaderParam;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.QueryParam;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;

/**
 */
@Path("/druid/coordinator/v1/config")
public class CoordinatorDynamicConfigsResource {
    private final JacksonConfigManager manager;
    private final AuditManager auditManager;

    @Inject
    public CoordinatorDynamicConfigsResource(JacksonConfigManager manager, AuditManager auditManager) {
        this.manager = manager;
        this.auditManager = auditManager;
    }

    @GET
    @Produces(MediaType.APPLICATION_JSON)
    public Response getDynamicConfigs() {
        return Response.ok(manager.watch(CoordinatorDynamicConfig.CONFIG_KEY, CoordinatorDynamicConfig.class).get())
                .build();
    }

    // default value is used for backwards compatibility
    @POST
    @Consumes(MediaType.APPLICATION_JSON)
    public Response setDynamicConfigs(final CoordinatorDynamicConfig dynamicConfig,
            @HeaderParam(AuditManager.X_DRUID_AUTHOR) @DefaultValue("") final String author,
            @HeaderParam(AuditManager.X_DRUID_COMMENT) @DefaultValue("") final String comment,
            @Context HttpServletRequest req) {
        if (!manager.set(CoordinatorDynamicConfig.CONFIG_KEY, dynamicConfig,
                new AuditInfo(author, comment, req.getRemoteAddr()))) {
            return Response.status(Response.Status.BAD_REQUEST).build();
        }
        return Response.ok().build();
    }

    @GET
    @Path("/history")
    @Produces(MediaType.APPLICATION_JSON)
    public Response getDatasourceRuleHistory(@QueryParam("interval") final String interval) {
        Interval theInterval = interval == null ? null : new Interval(interval);
        return Response.ok(auditManager.fetchAuditHistory(CoordinatorDynamicConfig.CONFIG_KEY,
                CoordinatorDynamicConfig.CONFIG_KEY, theInterval)).build();
    }

}