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| <pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> *<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> *<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * See the License for the specific language governing permissions and<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * limitations under the License.<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> */<a name="line.17"></a> |
| <span class="sourceLineNo">018</span>package org.apache.hadoop.hbase.util;<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import java.io.Closeable;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import java.io.IOException;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.io.OutputStreamWriter;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.io.PrintWriter;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.lang.management.ManagementFactory;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import java.lang.reflect.Array;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import java.nio.charset.StandardCharsets;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import java.util.Iterator;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import java.util.Set;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import java.util.regex.Pattern;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import javax.management.AttributeNotFoundException;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import javax.management.InstanceNotFoundException;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import javax.management.IntrospectionException;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import javax.management.MBeanAttributeInfo;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import javax.management.MBeanException;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import javax.management.MBeanInfo;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import javax.management.MBeanServer;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import javax.management.MalformedObjectNameException;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>import javax.management.ObjectName;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span>import javax.management.ReflectionException;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span>import javax.management.RuntimeErrorException;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span>import javax.management.RuntimeMBeanException;<a name="line.41"></a> |
| <span class="sourceLineNo">042</span>import javax.management.openmbean.CompositeData;<a name="line.42"></a> |
| <span class="sourceLineNo">043</span>import javax.management.openmbean.CompositeType;<a name="line.43"></a> |
| <span class="sourceLineNo">044</span>import javax.management.openmbean.TabularData;<a name="line.44"></a> |
| <span class="sourceLineNo">045</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.45"></a> |
| <span class="sourceLineNo">046</span>import org.slf4j.Logger;<a name="line.46"></a> |
| <span class="sourceLineNo">047</span>import org.slf4j.LoggerFactory;<a name="line.47"></a> |
| <span class="sourceLineNo">048</span><a name="line.48"></a> |
| <span class="sourceLineNo">049</span>import org.apache.hbase.thirdparty.com.google.gson.Gson;<a name="line.49"></a> |
| <span class="sourceLineNo">050</span>import org.apache.hbase.thirdparty.com.google.gson.stream.JsonWriter;<a name="line.50"></a> |
| <span class="sourceLineNo">051</span><a name="line.51"></a> |
| <span class="sourceLineNo">052</span>/**<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> * Utility for doing JSON and MBeans.<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> */<a name="line.54"></a> |
| <span class="sourceLineNo">055</span>@InterfaceAudience.Private<a name="line.55"></a> |
| <span class="sourceLineNo">056</span>public class JSONBean {<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> private static final String COMMA = ",";<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> private static final String ASTERICK = "*";<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> private static final Logger LOG = LoggerFactory.getLogger(JSONBean.class);<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> private static final Gson GSON = GsonUtil.createGsonWithDisableHtmlEscaping().create();<a name="line.60"></a> |
| <span class="sourceLineNo">061</span><a name="line.61"></a> |
| <span class="sourceLineNo">062</span> /**<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> * Use dumping out mbeans as JSON.<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> */<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> public interface Writer extends Closeable {<a name="line.65"></a> |
| <span class="sourceLineNo">066</span><a name="line.66"></a> |
| <span class="sourceLineNo">067</span> void write(String key, String value) throws IOException;<a name="line.67"></a> |
| <span class="sourceLineNo">068</span><a name="line.68"></a> |
| <span class="sourceLineNo">069</span> default int write(MBeanServer mBeanServer, ObjectName qry, String attribute,<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> boolean description) throws IOException {<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> return write(mBeanServer, qry, attribute, description, null);<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> }<a name="line.72"></a> |
| <span class="sourceLineNo">073</span><a name="line.73"></a> |
| <span class="sourceLineNo">074</span> int write(MBeanServer mBeanServer, ObjectName qry, String attribute, boolean description,<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> ObjectName excluded) throws IOException;<a name="line.75"></a> |
| <span class="sourceLineNo">076</span><a name="line.76"></a> |
| <span class="sourceLineNo">077</span> void flush() throws IOException;<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> }<a name="line.78"></a> |
| <span class="sourceLineNo">079</span><a name="line.79"></a> |
| <span class="sourceLineNo">080</span> /**<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> * Notice that, closing the return {@link Writer} will not close the {@code writer} passed in, you<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> * still need to close the {@code writer} by yourself.<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> * <p/><a name="line.83"></a> |
| <span class="sourceLineNo">084</span> * This is because that, we can only finish the json after you call {@link Writer#close()}. So if<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> * we just close the {@code writer}, you can write nothing after finished the json.<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> */<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> public Writer open(final PrintWriter writer) throws IOException {<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> JsonWriter jsonWriter = GSON.newJsonWriter(new java.io.Writer() {<a name="line.88"></a> |
| <span class="sourceLineNo">089</span><a name="line.89"></a> |
| <span class="sourceLineNo">090</span> @Override<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> public void write(char[] cbuf, int off, int len) throws IOException {<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> writer.write(cbuf, off, len);<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> }<a name="line.93"></a> |
| <span class="sourceLineNo">094</span><a name="line.94"></a> |
| <span class="sourceLineNo">095</span> @Override<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> public void flush() throws IOException {<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> writer.flush();<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> }<a name="line.98"></a> |
| <span class="sourceLineNo">099</span><a name="line.99"></a> |
| <span class="sourceLineNo">100</span> @Override<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> public void close() throws IOException {<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> // do nothing<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> }<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> });<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> jsonWriter.setIndent(" ");<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> jsonWriter.beginObject();<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> return new Writer() {<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> @Override<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> public void flush() throws IOException {<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> jsonWriter.flush();<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> }<a name="line.111"></a> |
| <span class="sourceLineNo">112</span><a name="line.112"></a> |
| <span class="sourceLineNo">113</span> @Override<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> public void close() throws IOException {<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> jsonWriter.endObject();<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> jsonWriter.close();<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> }<a name="line.117"></a> |
| <span class="sourceLineNo">118</span><a name="line.118"></a> |
| <span class="sourceLineNo">119</span> @Override<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> public void write(String key, String value) throws IOException {<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> jsonWriter.name(key).value(value);<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> }<a name="line.122"></a> |
| <span class="sourceLineNo">123</span><a name="line.123"></a> |
| <span class="sourceLineNo">124</span> @Override<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> public int write(MBeanServer mBeanServer, ObjectName qry, String attribute,<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> boolean description, ObjectName excluded) throws IOException {<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> return JSONBean.write(jsonWriter, mBeanServer, qry, attribute, description, excluded);<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> }<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> };<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> }<a name="line.130"></a> |
| <span class="sourceLineNo">131</span><a name="line.131"></a> |
| <span class="sourceLineNo">132</span> /** Returns Return non-zero if failed to find bean. 0 */<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> private static int write(JsonWriter writer, MBeanServer mBeanServer, ObjectName qry,<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> String attribute, boolean description, ObjectName excluded) throws IOException {<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> LOG.debug("Listing beans for {}", qry);<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> Set<ObjectName> names = mBeanServer.queryNames(qry, null);<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> writer.name("beans").beginArray();<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> Iterator<ObjectName> it = names.iterator();<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> Pattern[] matchingPattern = null;<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> while (it.hasNext()) {<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> ObjectName oname = it.next();<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> if (excluded != null && excluded.apply(oname)) {<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> continue;<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> }<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> MBeanInfo minfo;<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> String code = "";<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> String descriptionStr = null;<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> Object attributeinfo = null;<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> try {<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> minfo = mBeanServer.getMBeanInfo(oname);<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> code = minfo.getClassName();<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> if (description) {<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> descriptionStr = minfo.getDescription();<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> }<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> String prs = "";<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> try {<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> if ("org.apache.commons.modeler.BaseModelMBean".equals(code)) {<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> prs = "modelerType";<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> code = (String) mBeanServer.getAttribute(oname, prs);<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> }<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> if (attribute != null) {<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> String[] patternAttr = null;<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> if (attribute.contains(ASTERICK)) {<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> if (attribute.contains(COMMA)) {<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> patternAttr = attribute.split(COMMA);<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> } else {<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> patternAttr = new String[1];<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> patternAttr[0] = attribute;<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> }<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> matchingPattern = new Pattern[patternAttr.length];<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> for (int i = 0; i < patternAttr.length; i++) {<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> matchingPattern[i] = Pattern.compile(patternAttr[i]);<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> }<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> // nullify the attribute<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> attribute = null;<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> } else {<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> prs = attribute;<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> attributeinfo = mBeanServer.getAttribute(oname, prs);<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> }<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> }<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> } catch (RuntimeMBeanException e) {<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> // UnsupportedOperationExceptions happen in the normal course of business,<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> // so no need to log them as errors all the time.<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> if (e.getCause() instanceof UnsupportedOperationException) {<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> if (LOG.isTraceEnabled()) {<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> LOG.trace("Getting attribute " + prs + " of " + oname + " threw " + e);<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> }<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> } else {<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> LOG.error("Getting attribute " + prs + " of " + oname + " threw an exception", e);<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> }<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> return 0;<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> } catch (AttributeNotFoundException e) {<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> // If the modelerType attribute was not found, the class name is used<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> // instead.<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> LOG.error("getting attribute " + prs + " of " + oname + " threw an exception", e);<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> } catch (MBeanException e) {<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> // The code inside the attribute getter threw an exception so log it,<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> // and fall back on the class name<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> LOG.error("getting attribute " + prs + " of " + oname + " threw an exception", e);<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> } catch (RuntimeException e) {<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> // For some reason even with an MBeanException available to them<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> // Runtime exceptionscan still find their way through, so treat them<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> // the same as MBeanException<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> LOG.error("getting attribute " + prs + " of " + oname + " threw an exception", e);<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> } catch (ReflectionException e) {<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> // This happens when the code inside the JMX bean (setter?? from the<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> // java docs) threw an exception, so log it and fall back on the<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> // class name<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> LOG.error("getting attribute " + prs + " of " + oname + " threw an exception", e);<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> }<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> } catch (InstanceNotFoundException e) {<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> // Ignored for some reason the bean was not found so don't output it<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> continue;<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> } catch (IntrospectionException e) {<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> // This is an internal error, something odd happened with reflection so<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> // log it and don't output the bean.<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> LOG.error("Problem while trying to process JMX query: " + qry + " with MBean " + oname, e);<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> continue;<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> } catch (ReflectionException e) {<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> // This happens when the code inside the JMX bean threw an exception, so<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> // log it and don't output the bean.<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> LOG.error("Problem while trying to process JMX query: " + qry + " with MBean " + oname, e);<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> continue;<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> }<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> writer.beginObject();<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> writer.name("name").value(oname.toString());<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> if (description && descriptionStr != null && descriptionStr.length() > 0) {<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> writer.name("description").value(descriptionStr);<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> }<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> writer.name("modelerType").value(code);<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> if (attribute != null && attributeinfo == null) {<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> writer.name("result").value("ERROR");<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> writer.name("message").value("No attribute with name " + attribute + " was found.");<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> writer.endObject();<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> writer.endArray();<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> writer.close();<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> return -1;<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> }<a name="line.238"></a> |
| <span class="sourceLineNo">239</span><a name="line.239"></a> |
| <span class="sourceLineNo">240</span> if (attribute != null) {<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> writeAttribute(writer, attribute, descriptionStr, attributeinfo);<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> } else {<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> MBeanAttributeInfo[] attrs = minfo.getAttributes();<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> for (int i = 0; i < attrs.length; i++) {<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> writeAttribute(writer, mBeanServer, oname, description, matchingPattern, attrs[i]);<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> }<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> }<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> writer.endObject();<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> }<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> writer.endArray();<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> return 0;<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> }<a name="line.252"></a> |
| <span class="sourceLineNo">253</span><a name="line.253"></a> |
| <span class="sourceLineNo">254</span> private static void writeAttribute(JsonWriter writer, MBeanServer mBeanServer, ObjectName oname,<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> boolean description, Pattern pattern[], MBeanAttributeInfo attr) throws IOException {<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> if (!attr.isReadable()) {<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> return;<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> }<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> String attName = attr.getName();<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> if ("modelerType".equals(attName)) {<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> return;<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> }<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> if (attName.indexOf("=") >= 0 || attName.indexOf(" ") >= 0) {<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> return;<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> }<a name="line.265"></a> |
| <span class="sourceLineNo">266</span><a name="line.266"></a> |
| <span class="sourceLineNo">267</span> if (pattern != null) {<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> boolean matchFound = false;<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> for (Pattern compile : pattern) {<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> // check if we have any match<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> if (compile.matcher(attName).find()) {<a name="line.271"></a> |
| <span class="sourceLineNo">272</span> matchFound = true;<a name="line.272"></a> |
| <span class="sourceLineNo">273</span> break;<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> }<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> }<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> if (!matchFound) {<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> return;<a name="line.277"></a> |
| <span class="sourceLineNo">278</span> }<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> }<a name="line.279"></a> |
| <span class="sourceLineNo">280</span><a name="line.280"></a> |
| <span class="sourceLineNo">281</span> String descriptionStr = description ? attr.getDescription() : null;<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> Object value = null;<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> try {<a name="line.283"></a> |
| <span class="sourceLineNo">284</span> value = mBeanServer.getAttribute(oname, attName);<a name="line.284"></a> |
| <span class="sourceLineNo">285</span> } catch (RuntimeMBeanException e) {<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> // UnsupportedOperationExceptions happen in the normal course of business,<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> // so no need to log them as errors all the time.<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> if (e.getCause() instanceof UnsupportedOperationException) {<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> if (LOG.isTraceEnabled()) {<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> LOG.trace("Getting attribute " + attName + " of " + oname + " threw " + e);<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> }<a name="line.291"></a> |
| <span class="sourceLineNo">292</span> } else {<a name="line.292"></a> |
| <span class="sourceLineNo">293</span> LOG.error("getting attribute " + attName + " of " + oname + " threw an exception", e);<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> }<a name="line.294"></a> |
| <span class="sourceLineNo">295</span> return;<a name="line.295"></a> |
| <span class="sourceLineNo">296</span> } catch (RuntimeErrorException e) {<a name="line.296"></a> |
| <span class="sourceLineNo">297</span> // RuntimeErrorException happens when an unexpected failure occurs in getAttribute<a name="line.297"></a> |
| <span class="sourceLineNo">298</span> // for example https://issues.apache.org/jira/browse/DAEMON-120<a name="line.298"></a> |
| <span class="sourceLineNo">299</span> LOG.debug("getting attribute " + attName + " of " + oname + " threw an exception", e);<a name="line.299"></a> |
| <span class="sourceLineNo">300</span> return;<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> } catch (AttributeNotFoundException e) {<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> // Ignored the attribute was not found, which should never happen because the bean<a name="line.302"></a> |
| <span class="sourceLineNo">303</span> // just told us that it has this attribute, but if this happens just don't output<a name="line.303"></a> |
| <span class="sourceLineNo">304</span> // the attribute.<a name="line.304"></a> |
| <span class="sourceLineNo">305</span> return;<a name="line.305"></a> |
| <span class="sourceLineNo">306</span> } catch (MBeanException e) {<a name="line.306"></a> |
| <span class="sourceLineNo">307</span> // The code inside the attribute getter threw an exception so log it, and<a name="line.307"></a> |
| <span class="sourceLineNo">308</span> // skip outputting the attribute<a name="line.308"></a> |
| <span class="sourceLineNo">309</span> LOG.error("getting attribute " + attName + " of " + oname + " threw an exception", e);<a name="line.309"></a> |
| <span class="sourceLineNo">310</span> return;<a name="line.310"></a> |
| <span class="sourceLineNo">311</span> } catch (RuntimeException e) {<a name="line.311"></a> |
| <span class="sourceLineNo">312</span> // For some reason even with an MBeanException available to them Runtime exceptions<a name="line.312"></a> |
| <span class="sourceLineNo">313</span> // can still find their way through, so treat them the same as MBeanException<a name="line.313"></a> |
| <span class="sourceLineNo">314</span> LOG.error("getting attribute " + attName + " of " + oname + " threw an exception", e);<a name="line.314"></a> |
| <span class="sourceLineNo">315</span> return;<a name="line.315"></a> |
| <span class="sourceLineNo">316</span> } catch (ReflectionException e) {<a name="line.316"></a> |
| <span class="sourceLineNo">317</span> // This happens when the code inside the JMX bean (setter?? from the java docs)<a name="line.317"></a> |
| <span class="sourceLineNo">318</span> // threw an exception, so log it and skip outputting the attribute<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> LOG.error("getting attribute " + attName + " of " + oname + " threw an exception", e);<a name="line.319"></a> |
| <span class="sourceLineNo">320</span> return;<a name="line.320"></a> |
| <span class="sourceLineNo">321</span> } catch (InstanceNotFoundException e) {<a name="line.321"></a> |
| <span class="sourceLineNo">322</span> // Ignored the mbean itself was not found, which should never happen because we<a name="line.322"></a> |
| <span class="sourceLineNo">323</span> // just accessed it (perhaps something unregistered in-between) but if this<a name="line.323"></a> |
| <span class="sourceLineNo">324</span> // happens just don't output the attribute.<a name="line.324"></a> |
| <span class="sourceLineNo">325</span> return;<a name="line.325"></a> |
| <span class="sourceLineNo">326</span> }<a name="line.326"></a> |
| <span class="sourceLineNo">327</span><a name="line.327"></a> |
| <span class="sourceLineNo">328</span> writeAttribute(writer, attName, descriptionStr, value);<a name="line.328"></a> |
| <span class="sourceLineNo">329</span> }<a name="line.329"></a> |
| <span class="sourceLineNo">330</span><a name="line.330"></a> |
| <span class="sourceLineNo">331</span> private static void writeAttribute(JsonWriter writer, String attName, String descriptionStr,<a name="line.331"></a> |
| <span class="sourceLineNo">332</span> Object value) throws IOException {<a name="line.332"></a> |
| <span class="sourceLineNo">333</span> if (descriptionStr != null && descriptionStr.length() > 0 && !attName.equals(descriptionStr)) {<a name="line.333"></a> |
| <span class="sourceLineNo">334</span> writer.name(attName);<a name="line.334"></a> |
| <span class="sourceLineNo">335</span> writer.beginObject();<a name="line.335"></a> |
| <span class="sourceLineNo">336</span> writer.name("description").value(descriptionStr);<a name="line.336"></a> |
| <span class="sourceLineNo">337</span> writer.name("value");<a name="line.337"></a> |
| <span class="sourceLineNo">338</span> writeObject(writer, value);<a name="line.338"></a> |
| <span class="sourceLineNo">339</span> writer.endObject();<a name="line.339"></a> |
| <span class="sourceLineNo">340</span> } else {<a name="line.340"></a> |
| <span class="sourceLineNo">341</span> writer.name(attName);<a name="line.341"></a> |
| <span class="sourceLineNo">342</span> writeObject(writer, value);<a name="line.342"></a> |
| <span class="sourceLineNo">343</span> }<a name="line.343"></a> |
| <span class="sourceLineNo">344</span> }<a name="line.344"></a> |
| <span class="sourceLineNo">345</span><a name="line.345"></a> |
| <span class="sourceLineNo">346</span> private static void writeObject(JsonWriter writer, Object value) throws IOException {<a name="line.346"></a> |
| <span class="sourceLineNo">347</span> if (value == null) {<a name="line.347"></a> |
| <span class="sourceLineNo">348</span> writer.nullValue();<a name="line.348"></a> |
| <span class="sourceLineNo">349</span> } else {<a name="line.349"></a> |
| <span class="sourceLineNo">350</span> Class<?> c = value.getClass();<a name="line.350"></a> |
| <span class="sourceLineNo">351</span> if (c.isArray()) {<a name="line.351"></a> |
| <span class="sourceLineNo">352</span> writer.beginArray();<a name="line.352"></a> |
| <span class="sourceLineNo">353</span> int len = Array.getLength(value);<a name="line.353"></a> |
| <span class="sourceLineNo">354</span> for (int j = 0; j < len; j++) {<a name="line.354"></a> |
| <span class="sourceLineNo">355</span> Object item = Array.get(value, j);<a name="line.355"></a> |
| <span class="sourceLineNo">356</span> writeObject(writer, item);<a name="line.356"></a> |
| <span class="sourceLineNo">357</span> }<a name="line.357"></a> |
| <span class="sourceLineNo">358</span> writer.endArray();<a name="line.358"></a> |
| <span class="sourceLineNo">359</span> } else if (value instanceof Number) {<a name="line.359"></a> |
| <span class="sourceLineNo">360</span> Number n = (Number) value;<a name="line.360"></a> |
| <span class="sourceLineNo">361</span> if (Double.isFinite(n.doubleValue())) {<a name="line.361"></a> |
| <span class="sourceLineNo">362</span> writer.value(n);<a name="line.362"></a> |
| <span class="sourceLineNo">363</span> } else {<a name="line.363"></a> |
| <span class="sourceLineNo">364</span> writer.value(n.toString());<a name="line.364"></a> |
| <span class="sourceLineNo">365</span> }<a name="line.365"></a> |
| <span class="sourceLineNo">366</span> } else if (value instanceof Boolean) {<a name="line.366"></a> |
| <span class="sourceLineNo">367</span> Boolean b = (Boolean) value;<a name="line.367"></a> |
| <span class="sourceLineNo">368</span> writer.value(b);<a name="line.368"></a> |
| <span class="sourceLineNo">369</span> } else if (value instanceof CompositeData) {<a name="line.369"></a> |
| <span class="sourceLineNo">370</span> CompositeData cds = (CompositeData) value;<a name="line.370"></a> |
| <span class="sourceLineNo">371</span> CompositeType comp = cds.getCompositeType();<a name="line.371"></a> |
| <span class="sourceLineNo">372</span> Set<String> keys = comp.keySet();<a name="line.372"></a> |
| <span class="sourceLineNo">373</span> writer.beginObject();<a name="line.373"></a> |
| <span class="sourceLineNo">374</span> for (String key : keys) {<a name="line.374"></a> |
| <span class="sourceLineNo">375</span> writeAttribute(writer, key, null, cds.get(key));<a name="line.375"></a> |
| <span class="sourceLineNo">376</span> }<a name="line.376"></a> |
| <span class="sourceLineNo">377</span> writer.endObject();<a name="line.377"></a> |
| <span class="sourceLineNo">378</span> } else if (value instanceof TabularData) {<a name="line.378"></a> |
| <span class="sourceLineNo">379</span> TabularData tds = (TabularData) value;<a name="line.379"></a> |
| <span class="sourceLineNo">380</span> writer.beginArray();<a name="line.380"></a> |
| <span class="sourceLineNo">381</span> for (Object entry : tds.values()) {<a name="line.381"></a> |
| <span class="sourceLineNo">382</span> writeObject(writer, entry);<a name="line.382"></a> |
| <span class="sourceLineNo">383</span> }<a name="line.383"></a> |
| <span class="sourceLineNo">384</span> writer.endArray();<a name="line.384"></a> |
| <span class="sourceLineNo">385</span> } else {<a name="line.385"></a> |
| <span class="sourceLineNo">386</span> writer.value(value.toString());<a name="line.386"></a> |
| <span class="sourceLineNo">387</span> }<a name="line.387"></a> |
| <span class="sourceLineNo">388</span> }<a name="line.388"></a> |
| <span class="sourceLineNo">389</span> }<a name="line.389"></a> |
| <span class="sourceLineNo">390</span><a name="line.390"></a> |
| <span class="sourceLineNo">391</span> /**<a name="line.391"></a> |
| <span class="sourceLineNo">392</span> * Dump out all registered mbeans as json on System.out.<a name="line.392"></a> |
| <span class="sourceLineNo">393</span> */<a name="line.393"></a> |
| <span class="sourceLineNo">394</span> public static void dumpAllBeans() throws IOException, MalformedObjectNameException {<a name="line.394"></a> |
| <span class="sourceLineNo">395</span> try (PrintWriter writer =<a name="line.395"></a> |
| <span class="sourceLineNo">396</span> new PrintWriter(new OutputStreamWriter(System.out, StandardCharsets.UTF_8))) {<a name="line.396"></a> |
| <span class="sourceLineNo">397</span> JSONBean dumper = new JSONBean();<a name="line.397"></a> |
| <span class="sourceLineNo">398</span> try (JSONBean.Writer jsonBeanWriter = dumper.open(writer)) {<a name="line.398"></a> |
| <span class="sourceLineNo">399</span> MBeanServer mbeanServer = ManagementFactory.getPlatformMBeanServer();<a name="line.399"></a> |
| <span class="sourceLineNo">400</span> jsonBeanWriter.write(mbeanServer, new ObjectName("*:*"), null, false);<a name="line.400"></a> |
| <span class="sourceLineNo">401</span> }<a name="line.401"></a> |
| <span class="sourceLineNo">402</span> }<a name="line.402"></a> |
| <span class="sourceLineNo">403</span> }<a name="line.403"></a> |
| <span class="sourceLineNo">404</span>}<a name="line.404"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |
