org.apache.drill.exec.server.rest.DrillRoot.java Source code

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Here is the source code for org.apache.drill.exec.server.rest.DrillRoot.java

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/**
 * 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 org.apache.drill.exec.server.rest;

import java.util.List;

import javax.inject.Inject;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.xml.bind.annotation.XmlRootElement;

import org.apache.drill.common.config.DrillConfig;
import org.apache.drill.exec.proto.CoordinationProtos;
import org.apache.drill.exec.work.WorkManager;
import org.glassfish.jersey.server.mvc.Viewable;

import com.fasterxml.jackson.annotation.JsonCreator;
import com.google.common.collect.Lists;

@Path("/")
public class DrillRoot {
    static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(DrillRoot.class);

    @Inject
    WorkManager work;

    @GET
    @Produces(MediaType.TEXT_HTML)
    public Viewable getStats() {
        return new Viewable("/rest/index.ftl", getStatsJSON());
    }

    @GET
    @Path("/stats.json")
    @Produces(MediaType.APPLICATION_JSON)
    public List<Stat> getStatsJSON() {
        List<Stat> stats = Lists.newLinkedList();
        stats.add(new Stat("Number of Drill Bits", work.getContext().getBits().size()));
        int number = 0;
        for (CoordinationProtos.DrillbitEndpoint bit : work.getContext().getBits()) {
            String initialized = bit.isInitialized() ? " initialized" : " not initialized";
            stats.add(new Stat("Bit #" + number, bit.getAddress() + initialized));
            ++number;
        }
        stats.add(new Stat("Data Port Address", work.getContext().getEndpoint().getAddress() + ":"
                + work.getContext().getEndpoint().getDataPort()));
        stats.add(new Stat("User Port Address", work.getContext().getEndpoint().getAddress() + ":"
                + work.getContext().getEndpoint().getUserPort()));
        stats.add(new Stat("Control Port Address", work.getContext().getEndpoint().getAddress() + ":"
                + work.getContext().getEndpoint().getControlPort()));
        stats.add(new Stat("Maximum Direct Memory", DrillConfig.getMaxDirectMemory()));

        return stats;
    }

    @XmlRootElement
    public class Stat {
        private String name;
        private Object value;

        @JsonCreator
        public Stat(String name, Object value) {
            this.name = name;
            this.value = value;
        }

        public String getName() {
            return name;
        }

        public Object getValue() {
            return value;
        }

    }
}