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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 or more<a name="line.2"></a>
<span class="sourceLineNo">003</span> * contributor license agreements. See the NOTICE file distributed with<a name="line.3"></a>
<span class="sourceLineNo">004</span> * this work for additional information regarding copyright ownership.<a name="line.4"></a>
<span class="sourceLineNo">005</span> * The ASF licenses this file to You under the Apache license, Version 2.0<a name="line.5"></a>
<span class="sourceLineNo">006</span> * (the "License"); you may not use this file except in compliance with<a name="line.6"></a>
<span class="sourceLineNo">007</span> * the License. You may obtain a copy of the License at<a name="line.7"></a>
<span class="sourceLineNo">008</span> *<a name="line.8"></a>
<span class="sourceLineNo">009</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.9"></a>
<span class="sourceLineNo">010</span> *<a name="line.10"></a>
<span class="sourceLineNo">011</span> * Unless required by applicable law or agreed to in writing, software<a name="line.11"></a>
<span class="sourceLineNo">012</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.12"></a>
<span class="sourceLineNo">013</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.13"></a>
<span class="sourceLineNo">014</span> * See the license for the specific language governing permissions and<a name="line.14"></a>
<span class="sourceLineNo">015</span> * limitations under the license.<a name="line.15"></a>
<span class="sourceLineNo">016</span> */<a name="line.16"></a>
<span class="sourceLineNo">017</span>package org.apache.logging.log4j.flume.appender;<a name="line.17"></a>
<span class="sourceLineNo">018</span><a name="line.18"></a>
<span class="sourceLineNo">019</span>import java.util.HashMap;<a name="line.19"></a>
<span class="sourceLineNo">020</span>import java.util.Locale;<a name="line.20"></a>
<span class="sourceLineNo">021</span>import java.util.Map;<a name="line.21"></a>
<span class="sourceLineNo">022</span>import java.util.concurrent.TimeUnit;<a name="line.22"></a>
<span class="sourceLineNo">023</span><a name="line.23"></a>
<span class="sourceLineNo">024</span>import org.apache.flume.Event;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import org.apache.flume.EventDeliveryException;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import org.apache.flume.agent.embedded.EmbeddedAgent;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import org.apache.logging.log4j.LoggingException;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import org.apache.logging.log4j.core.appender.ManagerFactory;<a name="line.28"></a>
<span class="sourceLineNo">029</span>import org.apache.logging.log4j.core.config.ConfigurationException;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import org.apache.logging.log4j.core.config.Property;<a name="line.30"></a>
<span class="sourceLineNo">031</span>import org.apache.logging.log4j.core.util.NameUtil;<a name="line.31"></a>
<span class="sourceLineNo">032</span>import org.apache.logging.log4j.util.PropertiesUtil;<a name="line.32"></a>
<span class="sourceLineNo">033</span>import org.apache.logging.log4j.util.Strings;<a name="line.33"></a>
<span class="sourceLineNo">034</span><a name="line.34"></a>
<span class="sourceLineNo">035</span>/**<a name="line.35"></a>
<span class="sourceLineNo">036</span> *<a name="line.36"></a>
<span class="sourceLineNo">037</span> */<a name="line.37"></a>
<span class="sourceLineNo">038</span>public class FlumeEmbeddedManager extends AbstractFlumeManager {<a name="line.38"></a>
<span class="sourceLineNo">039</span><a name="line.39"></a>
<span class="sourceLineNo">040</span> private static final String FILE_SEP = PropertiesUtil.getProperties().getStringProperty("file.separator");<a name="line.40"></a>
<span class="sourceLineNo">041</span><a name="line.41"></a>
<span class="sourceLineNo">042</span> private static final String IN_MEMORY = "InMemory";<a name="line.42"></a>
<span class="sourceLineNo">043</span><a name="line.43"></a>
<span class="sourceLineNo">044</span> private static FlumeManagerFactory factory = new FlumeManagerFactory();<a name="line.44"></a>
<span class="sourceLineNo">045</span><a name="line.45"></a>
<span class="sourceLineNo">046</span> private final EmbeddedAgent agent;<a name="line.46"></a>
<span class="sourceLineNo">047</span><a name="line.47"></a>
<span class="sourceLineNo">048</span> private final String shortName;<a name="line.48"></a>
<span class="sourceLineNo">049</span><a name="line.49"></a>
<span class="sourceLineNo">050</span><a name="line.50"></a>
<span class="sourceLineNo">051</span> /**<a name="line.51"></a>
<span class="sourceLineNo">052</span> * Constructor<a name="line.52"></a>
<span class="sourceLineNo">053</span> * @param name The unique name of this manager.<a name="line.53"></a>
<span class="sourceLineNo">054</span> * @param shortName The short version of the agent name.<a name="line.54"></a>
<span class="sourceLineNo">055</span> * @param agent The embedded agent.<a name="line.55"></a>
<span class="sourceLineNo">056</span> */<a name="line.56"></a>
<span class="sourceLineNo">057</span> protected FlumeEmbeddedManager(final String name, final String shortName, final EmbeddedAgent agent) {<a name="line.57"></a>
<span class="sourceLineNo">058</span> super(name);<a name="line.58"></a>
<span class="sourceLineNo">059</span> this.agent = agent;<a name="line.59"></a>
<span class="sourceLineNo">060</span> this.shortName = shortName;<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> /**<a name="line.63"></a>
<span class="sourceLineNo">064</span> * Returns a FlumeEmbeddedManager.<a name="line.64"></a>
<span class="sourceLineNo">065</span> * @param name The name of the manager.<a name="line.65"></a>
<span class="sourceLineNo">066</span> * @param agents The agents to use.<a name="line.66"></a>
<span class="sourceLineNo">067</span> * @param properties Properties for the embedded manager.<a name="line.67"></a>
<span class="sourceLineNo">068</span> * @param batchSize The number of events to include in a batch.<a name="line.68"></a>
<span class="sourceLineNo">069</span> * @param dataDir The directory where the Flume FileChannel should write to.<a name="line.69"></a>
<span class="sourceLineNo">070</span> * @return A FlumeAvroManager.<a name="line.70"></a>
<span class="sourceLineNo">071</span> */<a name="line.71"></a>
<span class="sourceLineNo">072</span> public static FlumeEmbeddedManager getManager(final String name, final Agent[] agents, final Property[] properties,<a name="line.72"></a>
<span class="sourceLineNo">073</span> int batchSize, final String dataDir) {<a name="line.73"></a>
<span class="sourceLineNo">074</span><a name="line.74"></a>
<span class="sourceLineNo">075</span> if (batchSize &lt;= 0) {<a name="line.75"></a>
<span class="sourceLineNo">076</span> batchSize = 1;<a name="line.76"></a>
<span class="sourceLineNo">077</span> }<a name="line.77"></a>
<span class="sourceLineNo">078</span><a name="line.78"></a>
<span class="sourceLineNo">079</span> if ((agents == null || agents.length == 0) &amp;&amp; (properties == null || properties.length == 0)) {<a name="line.79"></a>
<span class="sourceLineNo">080</span> throw new IllegalArgumentException("Either an Agent or properties are required");<a name="line.80"></a>
<span class="sourceLineNo">081</span> } else if (agents != null &amp;&amp; agents.length &gt; 0 &amp;&amp; properties != null &amp;&amp; properties.length &gt; 0) {<a name="line.81"></a>
<span class="sourceLineNo">082</span> throw new IllegalArgumentException("Cannot configure both Agents and Properties.");<a name="line.82"></a>
<span class="sourceLineNo">083</span> }<a name="line.83"></a>
<span class="sourceLineNo">084</span><a name="line.84"></a>
<span class="sourceLineNo">085</span> final StringBuilder sb = new StringBuilder();<a name="line.85"></a>
<span class="sourceLineNo">086</span> boolean first = true;<a name="line.86"></a>
<span class="sourceLineNo">087</span><a name="line.87"></a>
<span class="sourceLineNo">088</span> if (agents != null &amp;&amp; agents.length &gt; 0) {<a name="line.88"></a>
<span class="sourceLineNo">089</span> sb.append(name).append('[');<a name="line.89"></a>
<span class="sourceLineNo">090</span> for (final Agent agent : agents) {<a name="line.90"></a>
<span class="sourceLineNo">091</span> if (!first) {<a name="line.91"></a>
<span class="sourceLineNo">092</span> sb.append('_');<a name="line.92"></a>
<span class="sourceLineNo">093</span> }<a name="line.93"></a>
<span class="sourceLineNo">094</span> sb.append(agent.getHost()).append('-').append(agent.getPort());<a name="line.94"></a>
<span class="sourceLineNo">095</span> first = false;<a name="line.95"></a>
<span class="sourceLineNo">096</span> }<a name="line.96"></a>
<span class="sourceLineNo">097</span> sb.append(']');<a name="line.97"></a>
<span class="sourceLineNo">098</span> } else {<a name="line.98"></a>
<span class="sourceLineNo">099</span> String sep = Strings.EMPTY;<a name="line.99"></a>
<span class="sourceLineNo">100</span> sb.append(name).append('-');<a name="line.100"></a>
<span class="sourceLineNo">101</span> final StringBuilder props = new StringBuilder();<a name="line.101"></a>
<span class="sourceLineNo">102</span> for (final Property prop : properties) {<a name="line.102"></a>
<span class="sourceLineNo">103</span> props.append(sep);<a name="line.103"></a>
<span class="sourceLineNo">104</span> props.append(prop.getName()).append('=').append(prop.getValue());<a name="line.104"></a>
<span class="sourceLineNo">105</span> sep = "_";<a name="line.105"></a>
<span class="sourceLineNo">106</span> }<a name="line.106"></a>
<span class="sourceLineNo">107</span> sb.append(NameUtil.md5(props.toString()));<a name="line.107"></a>
<span class="sourceLineNo">108</span> }<a name="line.108"></a>
<span class="sourceLineNo">109</span> return getManager(sb.toString(), factory,<a name="line.109"></a>
<span class="sourceLineNo">110</span> new FactoryData(name, agents, properties, batchSize, dataDir));<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 send(final Event event) {<a name="line.114"></a>
<span class="sourceLineNo">115</span> try {<a name="line.115"></a>
<span class="sourceLineNo">116</span> agent.put(event);<a name="line.116"></a>
<span class="sourceLineNo">117</span> } catch (final EventDeliveryException ex) {<a name="line.117"></a>
<span class="sourceLineNo">118</span> throw new LoggingException("Unable to deliver event to Flume Appender " + shortName, ex);<a name="line.118"></a>
<span class="sourceLineNo">119</span> }<a name="line.119"></a>
<span class="sourceLineNo">120</span> }<a name="line.120"></a>
<span class="sourceLineNo">121</span><a name="line.121"></a>
<span class="sourceLineNo">122</span> @Override<a name="line.122"></a>
<span class="sourceLineNo">123</span> protected boolean releaseSub(final long timeout, final TimeUnit timeUnit) {<a name="line.123"></a>
<span class="sourceLineNo">124</span> agent.stop();<a name="line.124"></a>
<span class="sourceLineNo">125</span> return true;<a name="line.125"></a>
<span class="sourceLineNo">126</span> }<a name="line.126"></a>
<span class="sourceLineNo">127</span><a name="line.127"></a>
<span class="sourceLineNo">128</span> /**<a name="line.128"></a>
<span class="sourceLineNo">129</span> * Factory data.<a name="line.129"></a>
<span class="sourceLineNo">130</span> */<a name="line.130"></a>
<span class="sourceLineNo">131</span> private static class FactoryData {<a name="line.131"></a>
<span class="sourceLineNo">132</span> private final Agent[] agents;<a name="line.132"></a>
<span class="sourceLineNo">133</span> private final Property[] properties;<a name="line.133"></a>
<span class="sourceLineNo">134</span> private final int batchSize;<a name="line.134"></a>
<span class="sourceLineNo">135</span> private final String dataDir;<a name="line.135"></a>
<span class="sourceLineNo">136</span> private final String name;<a name="line.136"></a>
<span class="sourceLineNo">137</span><a name="line.137"></a>
<span class="sourceLineNo">138</span> /**<a name="line.138"></a>
<span class="sourceLineNo">139</span> * Constructor.<a name="line.139"></a>
<span class="sourceLineNo">140</span> * @param name The name of the Appender.<a name="line.140"></a>
<span class="sourceLineNo">141</span> * @param agents The agents.<a name="line.141"></a>
<span class="sourceLineNo">142</span> * @param properties The Flume configuration properties.<a name="line.142"></a>
<span class="sourceLineNo">143</span> * @param batchSize The number of events to include in a batch.<a name="line.143"></a>
<span class="sourceLineNo">144</span> * @param dataDir The directory where Flume should write to.<a name="line.144"></a>
<span class="sourceLineNo">145</span> */<a name="line.145"></a>
<span class="sourceLineNo">146</span> public FactoryData(final String name, final Agent[] agents, final Property[] properties, final int batchSize,<a name="line.146"></a>
<span class="sourceLineNo">147</span> final String dataDir) {<a name="line.147"></a>
<span class="sourceLineNo">148</span> this.name = name;<a name="line.148"></a>
<span class="sourceLineNo">149</span> this.agents = agents;<a name="line.149"></a>
<span class="sourceLineNo">150</span> this.batchSize = batchSize;<a name="line.150"></a>
<span class="sourceLineNo">151</span> this.properties = properties;<a name="line.151"></a>
<span class="sourceLineNo">152</span> this.dataDir = dataDir;<a name="line.152"></a>
<span class="sourceLineNo">153</span> }<a name="line.153"></a>
<span class="sourceLineNo">154</span> }<a name="line.154"></a>
<span class="sourceLineNo">155</span><a name="line.155"></a>
<span class="sourceLineNo">156</span> /**<a name="line.156"></a>
<span class="sourceLineNo">157</span> * Avro Manager Factory.<a name="line.157"></a>
<span class="sourceLineNo">158</span> */<a name="line.158"></a>
<span class="sourceLineNo">159</span> private static class FlumeManagerFactory implements ManagerFactory&lt;FlumeEmbeddedManager, FactoryData&gt; {<a name="line.159"></a>
<span class="sourceLineNo">160</span><a name="line.160"></a>
<span class="sourceLineNo">161</span> /**<a name="line.161"></a>
<span class="sourceLineNo">162</span> * Create the FlumeAvroManager.<a name="line.162"></a>
<span class="sourceLineNo">163</span> * @param name The name of the entity to manage.<a name="line.163"></a>
<span class="sourceLineNo">164</span> * @param data The data required to create the entity.<a name="line.164"></a>
<span class="sourceLineNo">165</span> * @return The FlumeAvroManager.<a name="line.165"></a>
<span class="sourceLineNo">166</span> */<a name="line.166"></a>
<span class="sourceLineNo">167</span> @Override<a name="line.167"></a>
<span class="sourceLineNo">168</span> public FlumeEmbeddedManager createManager(final String name, final FactoryData data) {<a name="line.168"></a>
<span class="sourceLineNo">169</span> try {<a name="line.169"></a>
<span class="sourceLineNo">170</span> final Map&lt;String, String&gt; props = createProperties(data.name, data.agents, data.properties,<a name="line.170"></a>
<span class="sourceLineNo">171</span> data.batchSize, data.dataDir);<a name="line.171"></a>
<span class="sourceLineNo">172</span> final EmbeddedAgent agent = new EmbeddedAgent(name);<a name="line.172"></a>
<span class="sourceLineNo">173</span> agent.configure(props);<a name="line.173"></a>
<span class="sourceLineNo">174</span> agent.start();<a name="line.174"></a>
<span class="sourceLineNo">175</span> LOGGER.debug("Created Agent " + name);<a name="line.175"></a>
<span class="sourceLineNo">176</span> return new FlumeEmbeddedManager(name, data.name, agent);<a name="line.176"></a>
<span class="sourceLineNo">177</span> } catch (final Exception ex) {<a name="line.177"></a>
<span class="sourceLineNo">178</span> LOGGER.error("Could not create FlumeEmbeddedManager", ex);<a name="line.178"></a>
<span class="sourceLineNo">179</span> }<a name="line.179"></a>
<span class="sourceLineNo">180</span> return null;<a name="line.180"></a>
<span class="sourceLineNo">181</span> }<a name="line.181"></a>
<span class="sourceLineNo">182</span><a name="line.182"></a>
<span class="sourceLineNo">183</span> private Map&lt;String, String&gt; createProperties(final String name, final Agent[] agents,<a name="line.183"></a>
<span class="sourceLineNo">184</span> final Property[] properties, final int batchSize, String dataDir) {<a name="line.184"></a>
<span class="sourceLineNo">185</span> final Map&lt;String, String&gt; props = new HashMap&lt;&gt;();<a name="line.185"></a>
<span class="sourceLineNo">186</span><a name="line.186"></a>
<span class="sourceLineNo">187</span> if ((agents == null || agents.length == 0) &amp;&amp; (properties == null || properties.length == 0)) {<a name="line.187"></a>
<span class="sourceLineNo">188</span> LOGGER.error("No Flume configuration provided");<a name="line.188"></a>
<span class="sourceLineNo">189</span> throw new ConfigurationException("No Flume configuration provided");<a name="line.189"></a>
<span class="sourceLineNo">190</span> }<a name="line.190"></a>
<span class="sourceLineNo">191</span><a name="line.191"></a>
<span class="sourceLineNo">192</span> if (agents != null &amp;&amp; agents.length &gt; 0 &amp;&amp; properties != null &amp;&amp; properties.length &gt; 0) {<a name="line.192"></a>
<span class="sourceLineNo">193</span> LOGGER.error("Agents and Flume configuration cannot both be specified");<a name="line.193"></a>
<span class="sourceLineNo">194</span> throw new ConfigurationException("Agents and Flume configuration cannot both be specified");<a name="line.194"></a>
<span class="sourceLineNo">195</span> }<a name="line.195"></a>
<span class="sourceLineNo">196</span><a name="line.196"></a>
<span class="sourceLineNo">197</span> if (agents != null &amp;&amp; agents.length &gt; 0) {<a name="line.197"></a>
<span class="sourceLineNo">198</span><a name="line.198"></a>
<span class="sourceLineNo">199</span> if (Strings.isNotEmpty(dataDir)) {<a name="line.199"></a>
<span class="sourceLineNo">200</span> if (dataDir.equals(IN_MEMORY)) {<a name="line.200"></a>
<span class="sourceLineNo">201</span> props.put("channel.type", "memory");<a name="line.201"></a>
<span class="sourceLineNo">202</span> } else {<a name="line.202"></a>
<span class="sourceLineNo">203</span> props.put("channel.type", "file");<a name="line.203"></a>
<span class="sourceLineNo">204</span><a name="line.204"></a>
<span class="sourceLineNo">205</span> if (!dataDir.endsWith(FILE_SEP)) {<a name="line.205"></a>
<span class="sourceLineNo">206</span> dataDir = dataDir + FILE_SEP;<a name="line.206"></a>
<span class="sourceLineNo">207</span> }<a name="line.207"></a>
<span class="sourceLineNo">208</span><a name="line.208"></a>
<span class="sourceLineNo">209</span> props.put("channel.checkpointDir", dataDir + "checkpoint");<a name="line.209"></a>
<span class="sourceLineNo">210</span> props.put("channel.dataDirs", dataDir + "data");<a name="line.210"></a>
<span class="sourceLineNo">211</span> }<a name="line.211"></a>
<span class="sourceLineNo">212</span><a name="line.212"></a>
<span class="sourceLineNo">213</span> } else {<a name="line.213"></a>
<span class="sourceLineNo">214</span> props.put("channel.type", "file");<a name="line.214"></a>
<span class="sourceLineNo">215</span> }<a name="line.215"></a>
<span class="sourceLineNo">216</span><a name="line.216"></a>
<span class="sourceLineNo">217</span> final StringBuilder sb = new StringBuilder();<a name="line.217"></a>
<span class="sourceLineNo">218</span> String leading = Strings.EMPTY;<a name="line.218"></a>
<span class="sourceLineNo">219</span> final int priority = agents.length;<a name="line.219"></a>
<span class="sourceLineNo">220</span> for (int i = 0; i &lt; priority; ++i) {<a name="line.220"></a>
<span class="sourceLineNo">221</span> sb.append(leading).append("agent").append(i);<a name="line.221"></a>
<span class="sourceLineNo">222</span> leading = " ";<a name="line.222"></a>
<span class="sourceLineNo">223</span> final String prefix = "agent" + i;<a name="line.223"></a>
<span class="sourceLineNo">224</span> props.put(prefix + ".type", "avro");<a name="line.224"></a>
<span class="sourceLineNo">225</span> props.put(prefix + ".hostname", agents[i].getHost());<a name="line.225"></a>
<span class="sourceLineNo">226</span> props.put(prefix + ".port", Integer.toString(agents[i].getPort()));<a name="line.226"></a>
<span class="sourceLineNo">227</span> props.put(prefix + ".batch-size", Integer.toString(batchSize));<a name="line.227"></a>
<span class="sourceLineNo">228</span> props.put("processor.priority." + prefix, Integer.toString(agents.length - i));<a name="line.228"></a>
<span class="sourceLineNo">229</span> }<a name="line.229"></a>
<span class="sourceLineNo">230</span> props.put("sinks", sb.toString());<a name="line.230"></a>
<span class="sourceLineNo">231</span> props.put("processor.type", "failover");<a name="line.231"></a>
<span class="sourceLineNo">232</span> } else {<a name="line.232"></a>
<span class="sourceLineNo">233</span> String[] sinks = null;<a name="line.233"></a>
<span class="sourceLineNo">234</span><a name="line.234"></a>
<span class="sourceLineNo">235</span> for (final Property property : properties) {<a name="line.235"></a>
<span class="sourceLineNo">236</span> final String key = property.getName();<a name="line.236"></a>
<span class="sourceLineNo">237</span><a name="line.237"></a>
<span class="sourceLineNo">238</span> if (Strings.isEmpty(key)) {<a name="line.238"></a>
<span class="sourceLineNo">239</span> final String msg = "A property name must be provided";<a name="line.239"></a>
<span class="sourceLineNo">240</span> LOGGER.error(msg);<a name="line.240"></a>
<span class="sourceLineNo">241</span> throw new ConfigurationException(msg);<a name="line.241"></a>
<span class="sourceLineNo">242</span> }<a name="line.242"></a>
<span class="sourceLineNo">243</span><a name="line.243"></a>
<span class="sourceLineNo">244</span> final String upperKey = key.toUpperCase(Locale.ENGLISH);<a name="line.244"></a>
<span class="sourceLineNo">245</span><a name="line.245"></a>
<span class="sourceLineNo">246</span> if (upperKey.startsWith(name.toUpperCase(Locale.ENGLISH))) {<a name="line.246"></a>
<span class="sourceLineNo">247</span> final String msg =<a name="line.247"></a>
<span class="sourceLineNo">248</span> "Specification of the agent name is not allowed in Flume Appender configuration: " + key;<a name="line.248"></a>
<span class="sourceLineNo">249</span> LOGGER.error(msg);<a name="line.249"></a>
<span class="sourceLineNo">250</span> throw new ConfigurationException(msg);<a name="line.250"></a>
<span class="sourceLineNo">251</span> }<a name="line.251"></a>
<span class="sourceLineNo">252</span><a name="line.252"></a>
<span class="sourceLineNo">253</span> final String value = property.getValue();<a name="line.253"></a>
<span class="sourceLineNo">254</span> if (Strings.isEmpty(value)) {<a name="line.254"></a>
<span class="sourceLineNo">255</span> final String msg = "A value for property " + key + " must be provided";<a name="line.255"></a>
<span class="sourceLineNo">256</span> LOGGER.error(msg);<a name="line.256"></a>
<span class="sourceLineNo">257</span> throw new ConfigurationException(msg);<a name="line.257"></a>
<span class="sourceLineNo">258</span> }<a name="line.258"></a>
<span class="sourceLineNo">259</span><a name="line.259"></a>
<span class="sourceLineNo">260</span> if (upperKey.equals("SINKS")) {<a name="line.260"></a>
<span class="sourceLineNo">261</span> sinks = value.trim().split(" ");<a name="line.261"></a>
<span class="sourceLineNo">262</span> }<a name="line.262"></a>
<span class="sourceLineNo">263</span><a name="line.263"></a>
<span class="sourceLineNo">264</span> props.put(key, value);<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 (sinks == null || sinks.length == 0) {<a name="line.267"></a>
<span class="sourceLineNo">268</span> final String msg = "At least one Sink must be specified";<a name="line.268"></a>
<span class="sourceLineNo">269</span> LOGGER.error(msg);<a name="line.269"></a>
<span class="sourceLineNo">270</span> throw new ConfigurationException(msg);<a name="line.270"></a>
<span class="sourceLineNo">271</span> }<a name="line.271"></a>
<span class="sourceLineNo">272</span> }<a name="line.272"></a>
<span class="sourceLineNo">273</span> return props;<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> }<a name="line.276"></a>
<span class="sourceLineNo">277</span><a name="line.277"></a>
<span class="sourceLineNo">278</span>}<a name="line.278"></a>
</pre>
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