io.mandrel.metrics.MetricsSyncer.java Source code

Introduction

Here is the source code for io.mandrel.metrics.MetricsSyncer.java

Source

/*
 * Licensed to Mandrel under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Mandrel 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 io.mandrel.metrics;

import io.mandrel.cluster.discovery.DiscoveryClient;
import io.mandrel.cluster.instance.StateService;
import io.mandrel.transport.Clients;

import java.util.Map;

import lombok.extern.slf4j.Slf4j;

import org.apache.commons.collections.MapUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;

import com.google.common.collect.Maps;
import com.google.common.util.concurrent.Monitor;

@Slf4j
@Component
public class MetricsSyncer {

    @Autowired
    private Accumulators accumulators;
    @Autowired
    private Clients clients;
    @Autowired
    private DiscoveryClient discoveryClient;
    @Autowired
    private StateService stateService;

    private final Monitor monitor = new Monitor();

    @Scheduled(fixedRate = 10000)
    public void sync() {
        if (stateService.isStarted()) {
            if (monitor.tryEnter()) {
                try {
                    Map<String, Long> total = Maps.newHashMap();
                    total.putAll(accumulators.globalAccumulator().tick());
                    total.putAll(accumulators.nodeAccumulator().tick());
                    accumulators.spiderAccumulators().forEach((spiderId, acc) -> total.putAll(acc.tick()));

                    if (MapUtils.isNotEmpty(total)) {
                        try {
                            log.debug("Updating metrics");
                            clients.onRandomController().with(controller -> controller.updateMetrics(total));
                        } catch (Exception e) {
                            log.info("Can not update metrics {} due to", total, e);
                        }
                    }
                } finally {
                    monitor.leave();
                }
            }
        }
    }
}