com.brienwheeler.svc.monitor.telemetry.impl.GraphiteTelemetryInfoProcessor.java Source code

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Here is the source code for com.brienwheeler.svc.monitor.telemetry.impl.GraphiteTelemetryInfoProcessor.java

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/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2013 Brien L. Wheeler (brienwheeler@yahoo.com)
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package com.brienwheeler.svc.monitor.telemetry.impl;

import java.util.concurrent.atomic.AtomicReference;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.factory.annotation.Required;

import com.brienwheeler.lib.io.ReconnectingSocket;
import com.brienwheeler.lib.monitor.telemetry.TelemetryInfo;
import com.brienwheeler.lib.util.ValidationUtils;

public class GraphiteTelemetryInfoProcessor extends StoppableTelemetryInfoProcessorBase {
    private static final Log log = LogFactory.getLog(GraphiteTelemetryInfoProcessor.class);

    private String globalRedact = null;
    private String globalPrefix = null;
    private String hostname = "";
    private int port = 2003;
    private final AtomicReference<ReconnectingSocket> reconnectingSocket = new AtomicReference<ReconnectingSocket>();
    private final TelemetryNameFilter telemetryNameFilter = new TelemetryNameFilter();

    @Required
    public void setHostname(String hostname) {
        // allowed to be empty string to disable graphite integration
        ValidationUtils.assertNotNull(hostname, "hostname cannot be null");
        this.hostname = hostname.trim();
    }

    @Required
    public void setPort(int port) {
        ValidationUtils.assertTrue(port > 0, "port must be greater than 0");
        ValidationUtils.assertTrue(port < 65536, "port must be less than 65536");
        this.port = port;
    }

    public void setFilterRecords(String filterString) {
        telemetryNameFilter.setFilterRecords(filterString);
    }

    public void setGlobalPrefix(String globalPrefix) {
        if (globalPrefix == null || globalPrefix.trim().isEmpty())
            this.globalPrefix = null;
        else
            this.globalPrefix = globalPrefix.trim();
    }

    public void setGlobalRedact(String globalRedact) {
        if (globalRedact == null || globalRedact.trim().isEmpty())
            this.globalRedact = null;
        else
            this.globalRedact = globalRedact.trim();
    }

    @Override
    public void onStart() {
        if (!hostname.isEmpty()) {
            ReconnectingSocket reconnectingSocket = new ReconnectingSocket(hostname, port, log);
            reconnectingSocket.start();
            this.reconnectingSocket.set(reconnectingSocket);
        }
    }

    @Override
    public void onStop(long stopGracePeriod) {
        ReconnectingSocket socket = reconnectingSocket.getAndSet(null);
        if (socket != null)
            socket.stop();
    }

    @Override
    public void process(TelemetryInfo telemetryInfo) {
        ReconnectingSocket socket = reconnectingSocket.get();
        if (socket == null || !socket.isConnected())
            return;

        String name = telemetryInfo.getName();
        if (globalRedact != null) {
            name = name.replace(globalRedact, "");
        }
        if (globalPrefix != null) {
            name = (globalPrefix + ".") + name;
        }

        long createdAt = telemetryInfo.getCreatedAt() / 1000; // Graphite uses UNIX epoch

        StringBuffer data = new StringBuffer(256);
        for (String attrName : telemetryInfo.getAttributeNames()) {
            // we never care about NAME or CREATED_AT
            if (attrName.equals(TelemetryInfo.ATTR_NAME) || attrName.equals(TelemetryInfo.ATTR_CREATED_AT))
                continue;

            // allow a chance to filter out based on attrName too (FilteringTelemetryInfoProcessor
            // can only filter on telemetryInfo.name)
            String statisticName = name + "." + attrName;
            if (!telemetryNameFilter.process(statisticName))
                continue;

            Object attrValue = telemetryInfo.get(attrName);
            if (attrValue instanceof Double || attrValue instanceof Float || attrValue instanceof Integer
                    || attrValue instanceof Long) {
                data.setLength(0);
                data.append(statisticName);
                data.append(" ").append(attrValue.toString());
                data.append(" ").append(createdAt).append("\n");
                String dataStr = data.toString();
                socket.write(dataStr);
                log.debug(dataStr);
            }
        }
    }

}