Java tutorial
/** * The MIT License * Copyright 2010 JmxTrans team * * 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.googlecode.jmxtrans.model.output; import com.fasterxml.jackson.annotation.JsonCreator; import com.fasterxml.jackson.annotation.JsonProperty; import com.fasterxml.jackson.core.JsonEncoding; import com.fasterxml.jackson.core.JsonFactory; import com.fasterxml.jackson.core.JsonGenerator; import com.google.common.collect.ImmutableList; import com.googlecode.jmxtrans.model.Query; import com.googlecode.jmxtrans.model.Result; import com.googlecode.jmxtrans.model.Server; import com.googlecode.jmxtrans.model.ValidationException; import com.googlecode.jmxtrans.model.naming.KeyUtils; import lombok.EqualsAndHashCode; import lombok.ToString; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.io.IOException; import java.io.OutputStream; import java.net.Socket; import java.util.List; import java.util.Map; import java.util.concurrent.TimeUnit; import static com.googlecode.jmxtrans.util.NumberUtils.isNumeric; /** * <a href="http://sensuapp.org/docs/0.12/events">Sensu Event Data</a> * Format from <a href=https://github.com/SimpleFinance/chef-handler-sensu-event">chef-handler-sensu-event</a> * Class structure from LibratoWriter * <p/> * Settings: * <ul> * <li>"{@code host}": Sensu client host. Optional, default value: {@value #DEFAULT_SENSU_HOST}</li> * <li>"{@code handler}": Sensu handler. Optional, default value: {@value #DEFAULT_SENSU_HANDLER}</li> * </ul> * * @author <a href="mailto:jhmartin@toger.us">Jason Martin</a> */ @EqualsAndHashCode(exclude = "jsonFactory") @ToString public class SensuWriter extends BaseOutputWriter { private static final Logger logger = LoggerFactory.getLogger(SensuWriter.class); public static final String SETTING_HANDLER = "handler"; public static final String DEFAULT_SENSU_HOST = "localhost"; public static final String DEFAULT_SENSU_HANDLER = "graphite"; private final JsonFactory jsonFactory = new JsonFactory(); /** Sensu HTTP API URL */ private final String host; private final String handler; @JsonCreator public SensuWriter(@JsonProperty("typeNames") ImmutableList<String> typeNames, @JsonProperty("booleanAsNumber") boolean booleanAsNumber, @JsonProperty("debug") Boolean debugEnabled, @JsonProperty("host") String host, @JsonProperty("handler") String handler, @JsonProperty("settings") Map<String, Object> settings) { super(typeNames, booleanAsNumber, debugEnabled, settings); logger.warn("SensuWriter is deprecated. Please use SensuWriterFactory instead."); this.host = firstNonNull(host, (String) getSettings().get(HOST), DEFAULT_SENSU_HOST); this.handler = firstNonNull(handler, (String) getSettings().get(SETTING_HANDLER), DEFAULT_SENSU_HANDLER); } @Override public void validateSetup(Server server, Query query) throws ValidationException { logger.info("Start Sensu writer connected to '{}' with handler {}", host, handler); } @Override public void internalWrite(Server server, Query query, ImmutableList<Result> results) throws Exception { logger.debug("Export to '{}', metrics {}", host, query); writeToSensu(server, query, results); } private void serialize(Server server, Query query, List<Result> results, OutputStream outputStream) throws IOException { JsonGenerator g = jsonFactory.createGenerator(outputStream, JsonEncoding.UTF8); g.useDefaultPrettyPrinter(); g.writeStartObject(); g.writeStringField("name", "jmxtrans"); g.writeStringField("type", "metric"); g.writeStringField("handler", handler); StringBuilder jsonoutput = new StringBuilder(); List<String> typeNames = getTypeNames(); for (Result result : results) { for (Map.Entry<String, Object> values : result.getValues().entrySet()) { if (isNumeric(values.getValue())) { Object value = values.getValue(); jsonoutput.append(KeyUtils.getKeyString(server, query, result, values, typeNames, null)) .append(" ").append(value).append(" ") .append(TimeUnit.SECONDS.convert(result.getEpoch(), TimeUnit.MILLISECONDS)) .append(System.getProperty("line.separator")); } } } g.writeStringField("output", jsonoutput.toString()); g.writeEndObject(); g.flush(); g.close(); } private void writeToSensu(Server server, Query query, List<Result> results) { try (Socket socketConnection = new Socket(host, 3030)) { serialize(server, query, results, socketConnection.getOutputStream()); } catch (Exception e) { logger.warn("Failure to send result to Sensu server '{}'", host, e); } } public String getHost() { return host; } public String getHandler() { return handler; } }