/
MetricManager.java
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/
MetricManager.java
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/*
* Copyright 2014 Stackify
*
* 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 com.stackify.metric;
import java.util.concurrent.atomic.AtomicBoolean;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.stackify.api.common.ApiConfiguration;
import com.stackify.api.common.ApiConfigurations;
import com.stackify.api.common.AppIdentityService;
import com.stackify.api.common.EnvironmentDetails;
import com.stackify.metric.impl.MetricBackgroundService;
import com.stackify.metric.impl.MetricCollector;
import com.stackify.metric.impl.MetricMonitorService;
import com.stackify.metric.impl.MetricSender;
/**
* MetricManager
* @author Eric Martin
*/
public class MetricManager {
/**
* Logger
*/
private static final Logger LOGGER = LoggerFactory.getLogger(MetricManager.class);
/**
* True if the Metrics API has been initialized, false otherwise
*/
private static AtomicBoolean INITIALIZED = new AtomicBoolean(false);
/**
* API configuration
*/
private static ApiConfiguration CONFIG = null;
/**
* Metric collector
*/
private static MetricCollector COLLECTOR = new MetricCollector();
/**
* Background service for sending metrics to Stackify
*/
private static MetricBackgroundService BACKGROUND_SERVICE = null;
/**
* @return The metric collector
*/
public static MetricCollector getCollector() {
if (INITIALIZED.compareAndSet(false, true)) {
startup();
}
return COLLECTOR;
}
/**
* Manually configure the metrics api
* @param config API configuration
*/
public static synchronized void configure(final ApiConfiguration config) {
ApiConfiguration.Builder builder = ApiConfiguration.newBuilder();
builder.apiUrl(config.getApiUrl());
builder.apiKey(config.getApiKey());
builder.application(config.getApplication());
builder.environment(config.getEnvironment());
if (config.getEnvDetail() == null)
{
builder.envDetail(EnvironmentDetails.getEnvironmentDetail(config.getApplication(), config.getEnvironment()));
}
else
{
builder.envDetail(config.getEnvDetail());
}
CONFIG = builder.build();
}
/**
* Start up the background thread that is processing metrics
*/
private static synchronized void startup() {
try {
if (CONFIG == null) {
CONFIG = ApiConfigurations.fromProperties();
}
ObjectMapper objectMapper = new ObjectMapper();
AppIdentityService appIdentityService = new AppIdentityService(CONFIG, objectMapper, true);
MetricMonitorService monitorService = new MetricMonitorService(CONFIG, objectMapper, appIdentityService);
MetricSender sender = new MetricSender(CONFIG, objectMapper, monitorService);
BACKGROUND_SERVICE = new MetricBackgroundService(COLLECTOR, sender);
BACKGROUND_SERVICE.start();
} catch (Throwable t) {
LOGGER.error("Exception starting Stackify Metrics API service", t);
}
}
/**
* Shut down the background thread that is processing metrics
*/
public static synchronized void shutdown() {
if (BACKGROUND_SERVICE != null) {
try {
BACKGROUND_SERVICE.stop();
} catch (Throwable t) {
LOGGER.error("Exception stopping Stackify Metrics API service", t);
}
INITIALIZED.compareAndSet(true, false);
}
}
/**
* Hidden to prevent construction
*/
private MetricManager() {
}
}