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

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Here is the source code for io.druid.server.http.RulesResource.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 com.google.common.collect.ImmutableMap;
import com.google.inject.Inject;
import io.druid.audit.AuditInfo;
import io.druid.audit.AuditManager;
import io.druid.metadata.MetadataRuleManager;
import io.druid.server.coordinator.rules.Rule;
import org.joda.time.Interval;

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.PathParam;
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;
import java.util.List;

/**
 */
@Path("/druid/coordinator/v1/rules")
public class RulesResource {
    private final MetadataRuleManager databaseRuleManager;
    private final AuditManager auditManager;

    @Inject
    public RulesResource(MetadataRuleManager databaseRuleManager, AuditManager auditManager) {
        this.databaseRuleManager = databaseRuleManager;
        this.auditManager = auditManager;
    }

    @GET
    @Produces(MediaType.APPLICATION_JSON)
    public Response getRules() {
        return Response.ok(databaseRuleManager.getAllRules()).build();
    }

    @GET
    @Path("/{dataSourceName}")
    @Produces(MediaType.APPLICATION_JSON)
    public Response getDatasourceRules(@PathParam("dataSourceName") final String dataSourceName,
            @QueryParam("full") final String full) {
        if (full != null) {
            return Response.ok(databaseRuleManager.getRulesWithDefault(dataSourceName)).build();
        }
        return Response.ok(databaseRuleManager.getRules(dataSourceName)).build();
    }

    // default value is used for backwards compatibility
    @POST
    @Path("/{dataSourceName}")
    @Consumes(MediaType.APPLICATION_JSON)
    public Response setDatasourceRules(@PathParam("dataSourceName") final String dataSourceName,
            final List<Rule> rules, @HeaderParam(AuditManager.X_DRUID_AUTHOR) @DefaultValue("") final String author,
            @HeaderParam(AuditManager.X_DRUID_COMMENT) @DefaultValue("") final String comment,
            @Context HttpServletRequest req) {
        if (databaseRuleManager.overrideRule(dataSourceName, rules,
                new AuditInfo(author, comment, req.getRemoteAddr()))) {
            return Response.ok().build();
        }
        return Response.status(Response.Status.INTERNAL_SERVER_ERROR).build();
    }

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

    @GET
    @Path("/history")
    @Produces(MediaType.APPLICATION_JSON)
    public Response getDatasourceRuleHistory(@QueryParam("interval") final String interval) {
        try {
            Interval theInterval = interval == null ? null : new Interval(interval);
            return Response.ok(auditManager.fetchAuditHistory("rules", theInterval)).build();
        } catch (IllegalArgumentException e) {
            return Response.serverError().entity(ImmutableMap.<String, Object>of("error", e.getMessage())).build();
        }
    }

}