Java tutorial
/** * Copyright 2014 AppDynamics, Inc. * * 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.appdynamics.monitors.nginx.statsExtractor; import org.json.JSONObject; import java.util.HashMap; import java.util.Map; import java.util.Set; public class CachesStatsExtractor implements StatsExtractor { @Override public Map<String, String> extractStats(JSONObject respJson) { JSONObject caches = respJson.getJSONObject("caches"); Map<String, String> cachesStats = getCachesStats(caches); return cachesStats; } private Map<String, String> getCachesStats(JSONObject caches) { Map<String, String> cachesStats = new HashMap<String, String>(); Set<String> cacheNames = caches.keySet(); for (String cacheName : cacheNames) { JSONObject cache = caches.getJSONObject(cacheName); long size = cache.getLong("size"); cachesStats.put("caches|" + cacheName + "|size", String.valueOf(size)); long max_size = cache.getLong("max_size"); cachesStats.put("caches|" + cacheName + "|max_size", String.valueOf(max_size)); boolean cold = cache.getBoolean("cold"); cachesStats.put("caches|" + cacheName + "|cold", String.valueOf(cold ? 0 : 1)); for (String s : new String[] { "hit", "stale", "updating", "revalidated" }) { JSONObject jsonObject = cache.getJSONObject(s); long responses = jsonObject.getLong("responses"); cachesStats.put("caches|" + cacheName + "|" + s + "|responses", String.valueOf(responses)); long bytes = jsonObject.getLong("bytes"); cachesStats.put("caches|" + cacheName + "|" + s + "|bytes", String.valueOf(bytes)); } for (String s : new String[] { "miss", "expired", "bypass" }) { JSONObject jsonObject = cache.getJSONObject(s); long responses = jsonObject.getLong("responses"); cachesStats.put("caches|" + cacheName + "|" + s + "|responses", String.valueOf(responses)); long bytes = jsonObject.getLong("bytes"); cachesStats.put("caches|" + cacheName + "|" + s + "|bytes", String.valueOf(bytes)); long responses_written = jsonObject.getLong("responses_written"); cachesStats.put("caches|" + cacheName + "|" + s + "|responses_written", String.valueOf(responses_written)); long bytes_written = jsonObject.getLong("bytes_written"); cachesStats.put("caches|" + cacheName + "|" + s + "|bytes_written", String.valueOf(bytes_written)); } } return cachesStats; } }