/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF 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 org.apache.ambari.view.slider.rest.client;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import org.apache.ambari.view.URLStreamProvider;
import org.apache.ambari.view.ViewContext;
import org.apache.ambari.view.slider.MetricsHolder;
import org.apache.ambari.view.slider.SliderAppType;
import org.apache.ambari.view.slider.SliderAppTypeComponent;
import org.apache.ambari.view.slider.TemporalInfo;
import org.apache.ambari.view.slider.SliderAppsViewController;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class SliderAppMasterClient extends BaseHttpClient {
private static final Logger logger = LoggerFactory
.getLogger(SliderAppMasterClient.class);
public SliderAppMasterClient(String url, ViewContext viewContext) {
super(url, viewContext);
}
public SliderAppMasterData getAppMasterData() {
try {
String html = doGet("");
if (html != null) {
int from = html.lastIndexOf("<ul>");
int to = html.lastIndexOf("</ul>");
if (from < to && from > -1) {
SliderAppMasterData data = new SliderAppMasterData();
String content = html.substring(from, to);
content = content.replaceAll("<[^>]*>", "\r\n");
String[] splits = content.split("\r\n");
for (int i = 0; i < splits.length; i++) {
String split = splits[i].trim();
if ("classpath:org.apache.slider.registry".equals(split)) {
data.registryUrl = splits[i + 1].trim();
} else if ("classpath:org.apache.http.UI".equals(split)) {
data.uiUrl = splits[i + 1].trim();
} else if ("classpath:org.apache.slider.management".equals(split)) {
data.managementUrl = splits[i + 1].trim();
} else if ("classpath:org.apache.slider.publisher".equals(split)) {
data.publisherUrl = splits[i + 1].trim();
}
}
return data;
}
}
} catch (IOException e) {
logger.warn("Unable to determine Ambari clusters", e);
throw new RuntimeException(e.getMessage(), e);
}
return null;
}
public Map<String, String> getQuickLinks(String providerUrl) {
Map<String, String> quickLinks = new HashMap<String, String>();
try {
if (providerUrl == null || providerUrl.trim().length() < 1) {
return quickLinks;
}
JsonElement json = super.doGetJson(providerUrl, "/slider/quicklinks");
if (json != null && json.getAsJsonObject() != null
&& json.getAsJsonObject().has("entries")) {
JsonObject jsonObject = json.getAsJsonObject().get("entries")
.getAsJsonObject();
for (Entry<String, JsonElement> entry : jsonObject.entrySet()) {
if ("org.apache.slider.jmx".equals(entry.getKey())) {
quickLinks.put("JMX", entry.getValue().getAsString());
} else if ("org.apache.slider.monitor".equals(entry.getKey())) {
quickLinks.put("UI", entry.getValue().getAsString());
} else if ("org.apache.slider.metrics.ui".equals(entry.getKey())) {
quickLinks.put("Metrics UI", entry.getValue().getAsString());
} else if ("org.apache.slider.metrics".equals(entry.getKey())) {
quickLinks.put(SliderAppsViewController.METRICS_API_NAME, entry.getValue().getAsString());
} else {
quickLinks.put(entry.getKey(), entry.getValue().getAsString());
}
}
}
} catch (IOException e) {
logger.warn("Unable to determine quicklinks from " + providerUrl, e);
}
return quickLinks;
}
public Map<String, Map<String, String>> getConfigs(String providerUrl) {
Map<String, Map<String, String>> configsMap = new HashMap<String, Map<String, String>>();
try {
if (providerUrl == null || providerUrl.trim().length() < 1) {
return configsMap;
}
JsonElement json = super.doGetJson(providerUrl, "/slider");
if (json != null) {
JsonObject configsJson = json.getAsJsonObject().get("configurations")
.getAsJsonObject();
for (Entry<String, JsonElement> entry : configsJson.entrySet()) {
if ("complete-config".equals(entry.getKey())
|| "quicklinks".equals(entry.getKey())) {
continue;
}
JsonElement entryJson = super.doGetJson(providerUrl, "/slider/"
+ entry.getKey());
if (entryJson != null) {
JsonObject configsObj = entryJson.getAsJsonObject().get("entries")
.getAsJsonObject();
if (configsObj != null) {
Map<String, String> configs = new HashMap<String, String>();
for (Entry<String, JsonElement> e : configsObj.entrySet()) {
configs.put(e.getKey(), e.getValue().getAsString());
}
configsMap.put(entry.getKey(), configs);
}
}
}
}
} catch (IOException e) {
logger.warn("Unable to determine quicklinks from " + providerUrl, e);
}
return configsMap;
}
public Map<String, Number[][]> getMetrics(String appName,
String metricsUrl,
Set<String> metricsRequested,
TemporalInfo temporalInfo,
ViewContext context,
SliderAppType appType,
MetricsHolder metricsHolder) {
Map<String, Number[][]> retVal = new HashMap<String, Number[][]>();
if (appType == null || metricsHolder == null
|| metricsHolder.getTimelineMetrics() == null) {
logger.info("AppType must be provided and it must contain "
+ "timeline_metrics.json to extract jmx properties");
return retVal;
}
Map<String, Number[][]> receivedMetrics = null;
List<String> components = new ArrayList<String>();
for (SliderAppTypeComponent appTypeComponent : appType.getTypeComponents()) {
components.add(appTypeComponent.getName());
}
Map<String, Map<String, Map<String, Metric>>> metrics = metricsHolder
.getTimelineMetrics();
Map<String, Metric> relevantMetrics = getRelevantMetrics(metrics, components);
Set<String> metricsToRead = new HashSet<String>();
Map<String, String> reverseNameLookup = new HashMap<String, String>();
for (String key : relevantMetrics.keySet()) {
if (metricsRequested.contains(key)) {
String metricName = relevantMetrics.get(key).getMetric();
metricsToRead.add(metricName);
reverseNameLookup.put(metricName, key);
}
}
if (metricsToRead.size() != 0) {
try {
String specWithParams = SliderAppMetricsHelper.getUrlWithParams(
appName, metricsUrl, metricsToRead, temporalInfo);
logger.info("Using spec: " + specWithParams);
if (specWithParams != null) {
String spec = null;
String params = null;
String[] tokens = specWithParams.split("\\?", 2);
try {
spec = tokens[0];
params = tokens[1];
} catch (ArrayIndexOutOfBoundsException e) {
logger.info(e.toString());
}
receivedMetrics = SliderAppMetricsHelper.getMetrics(context, spec,
params);
}
} catch (Exception e) {
logger.warn("Unable to retrieve metrics. " + e.getMessage());
}
}
if (receivedMetrics != null) {
for (Map.Entry<String, Number[][]> metric : receivedMetrics.entrySet()) {
if (reverseNameLookup.containsKey(metric.getKey())) {
retVal.put(reverseNameLookup.get(metric.getKey()), metric.getValue());
}
}
}
return retVal;
}
/**
* Provides only the interesting JMX metric names and values.
*
* @param jmxUrl
*
* @return
*/
public Map<String, String> getJmx(String jmxUrl,
ViewContext context,
SliderAppType appType,
MetricsHolder metricsHolder) {
Map<String, String> jmxProperties = new HashMap<String, String>();
if (appType == null || metricsHolder == null || metricsHolder.getJmxMetrics() == null) {
logger
.info("AppType must be provided and it must contain jmx_metrics.json to extract jmx properties");
return jmxProperties;
}
List<String> components = new ArrayList<String>();
for (SliderAppTypeComponent appTypeComponent : appType.getTypeComponents()) {
components.add(appTypeComponent.getName());
}
Map<String, Map<String, Map<String, Metric>>> metrics = metricsHolder.getJmxMetrics();
Map<String, Metric> relevantMetrics = getRelevantMetrics(metrics, components);
if (relevantMetrics.size() == 0) {
logger.info("No metrics found for components defined in the app.");
return jmxProperties;
}
SliderAppJmxHelper.JMXTypes jmxType = SliderAppJmxHelper.jmxTypeExpected(relevantMetrics);
if (jmxType == null) {
logger
.info("jmx_metrics.json is malformed. It may have mixed metric key types of unsupported metric key types.");
return jmxProperties;
}
try {
URLStreamProvider streamProvider = context.getURLStreamProvider();
InputStream jmxStream = null;
Map<String, String> headers = new HashMap<String, String>();
try {
jmxStream = streamProvider.readFrom(jmxUrl, "GET", (String)null, headers);
} catch (IOException e) {
logger.error(String.format(
"Unable to access JMX endpoint at %s. Error %s", jmxUrl,
e.getMessage()));
}
if (jmxStream != null) {
switch (jmxType) {
case JMX_BEAN:
SliderAppJmxHelper.extractMetricsFromJmxBean(jmxStream, jmxUrl,
jmxProperties, relevantMetrics);
break;
case JSON:
SliderAppJmxHelper.extractMetricsFromJmxJson(jmxStream, jmxUrl,
jmxProperties, relevantMetrics);
break;
case XML:
SliderAppJmxHelper.extractMetricsFromJmxXML(jmxStream, jmxUrl,
jmxProperties, relevantMetrics);
break;
default:
logger.info("Unsupported jmx type.");
}
}
} catch (Exception e) {
logger.info("Failed to extract jmx metrics. " + e.getMessage());
}
return jmxProperties;
}
private Map<String, Metric> getRelevantMetrics(
Map<String, Map<String, Map<String, Metric>>> metrics, List<String> comps) {
Map<String, Metric> relevantMetrics = new HashMap<String, Metric>();
for (String comp : comps) {
for (Map<String, Map<String, Metric>> m : metrics.values()) {
if (m.containsKey(comp)) {
relevantMetrics.putAll(m.get(comp));
}
}
}
return relevantMetrics;
}
public static class SliderAppMasterData {
public String registryUrl;
public String uiUrl;
public String managementUrl;
public String publisherUrl;
}
public static class SliderAppContainerData {
public String hostName;
public String containerId;
}
}