http://git-wip-us.apache.org/repos/asf/hbase-site/blob/f55ebeaa/devapidocs/src-html/org/apache/hadoop/hbase/ipc/SimpleRpcServer.Listener.Reader.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/ipc/SimpleRpcServer.Listener.Reader.html b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/SimpleRpcServer.Listener.Reader.html index 7f61b54..35e8890 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/ipc/SimpleRpcServer.Listener.Reader.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/SimpleRpcServer.Listener.Reader.html @@ -23,1363 +23,690 @@ <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><a name="line.18"></a> -<span class="sourceLineNo">019</span>package org.apache.hadoop.hbase.ipc;<a name="line.19"></a> -<span class="sourceLineNo">020</span><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.InputStream;<a name="line.22"></a> -<span class="sourceLineNo">023</span>import java.net.BindException;<a name="line.23"></a> -<span class="sourceLineNo">024</span>import java.net.InetAddress;<a name="line.24"></a> -<span class="sourceLineNo">025</span>import java.net.InetSocketAddress;<a name="line.25"></a> -<span class="sourceLineNo">026</span>import java.net.ServerSocket;<a name="line.26"></a> -<span class="sourceLineNo">027</span>import java.net.Socket;<a name="line.27"></a> -<span class="sourceLineNo">028</span>import java.net.SocketException;<a name="line.28"></a> -<span class="sourceLineNo">029</span>import java.net.UnknownHostException;<a name="line.29"></a> -<span class="sourceLineNo">030</span>import java.nio.ByteBuffer;<a name="line.30"></a> -<span class="sourceLineNo">031</span>import java.nio.channels.CancelledKeyException;<a name="line.31"></a> -<span class="sourceLineNo">032</span>import java.nio.channels.ClosedChannelException;<a name="line.32"></a> -<span class="sourceLineNo">033</span>import java.nio.channels.GatheringByteChannel;<a name="line.33"></a> -<span class="sourceLineNo">034</span>import java.nio.channels.ReadableByteChannel;<a name="line.34"></a> -<span class="sourceLineNo">035</span>import java.nio.channels.SelectionKey;<a name="line.35"></a> -<span class="sourceLineNo">036</span>import java.nio.channels.Selector;<a name="line.36"></a> -<span class="sourceLineNo">037</span>import java.nio.channels.ServerSocketChannel;<a name="line.37"></a> -<span class="sourceLineNo">038</span>import java.nio.channels.SocketChannel;<a name="line.38"></a> -<span class="sourceLineNo">039</span>import java.util.ArrayList;<a name="line.39"></a> -<span class="sourceLineNo">040</span>import java.util.Arrays;<a name="line.40"></a> -<span class="sourceLineNo">041</span>import java.util.Collections;<a name="line.41"></a> -<span class="sourceLineNo">042</span>import java.util.Iterator;<a name="line.42"></a> -<span class="sourceLineNo">043</span>import java.util.List;<a name="line.43"></a> -<span class="sourceLineNo">044</span>import java.util.Set;<a name="line.44"></a> -<span class="sourceLineNo">045</span>import java.util.Timer;<a name="line.45"></a> -<span class="sourceLineNo">046</span>import java.util.TimerTask;<a name="line.46"></a> -<span class="sourceLineNo">047</span>import java.util.concurrent.ConcurrentHashMap;<a name="line.47"></a> -<span class="sourceLineNo">048</span>import java.util.concurrent.ConcurrentLinkedDeque;<a name="line.48"></a> -<span class="sourceLineNo">049</span>import java.util.concurrent.ExecutorService;<a name="line.49"></a> -<span class="sourceLineNo">050</span>import java.util.concurrent.Executors;<a name="line.50"></a> -<span class="sourceLineNo">051</span>import java.util.concurrent.LinkedBlockingQueue;<a name="line.51"></a> -<span class="sourceLineNo">052</span>import java.util.concurrent.atomic.AtomicInteger;<a name="line.52"></a> -<span class="sourceLineNo">053</span>import java.util.concurrent.atomic.LongAdder;<a name="line.53"></a> -<span class="sourceLineNo">054</span>import java.util.concurrent.locks.Lock;<a name="line.54"></a> -<span class="sourceLineNo">055</span>import java.util.concurrent.locks.ReentrantLock;<a name="line.55"></a> -<span class="sourceLineNo">056</span><a name="line.56"></a> -<span class="sourceLineNo">057</span>import org.apache.hadoop.conf.Configuration;<a name="line.57"></a> -<span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.CellScanner;<a name="line.58"></a> -<span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.DoNotRetryIOException;<a name="line.59"></a> -<span class="sourceLineNo">060</span>import org.apache.hadoop.hbase.HBaseIOException;<a name="line.60"></a> -<span class="sourceLineNo">061</span>import org.apache.hadoop.hbase.HConstants;<a name="line.61"></a> -<span class="sourceLineNo">062</span>import org.apache.hadoop.hbase.Server;<a name="line.62"></a> -<span class="sourceLineNo">063</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.63"></a> -<span class="sourceLineNo">064</span>import org.apache.hadoop.hbase.classification.InterfaceStability;<a name="line.64"></a> -<span class="sourceLineNo">065</span>import org.apache.hadoop.hbase.client.VersionInfoUtil;<a name="line.65"></a> -<span class="sourceLineNo">066</span>import org.apache.hadoop.hbase.exceptions.RequestTooBigException;<a name="line.66"></a> -<span class="sourceLineNo">067</span>import org.apache.hadoop.hbase.monitoring.MonitoredRPCHandler;<a name="line.67"></a> -<span class="sourceLineNo">068</span>import org.apache.hadoop.hbase.nio.ByteBuff;<a name="line.68"></a> -<span class="sourceLineNo">069</span>import org.apache.hadoop.hbase.nio.SingleByteBuff;<a name="line.69"></a> -<span class="sourceLineNo">070</span>import org.apache.hadoop.hbase.security.AccessDeniedException;<a name="line.70"></a> -<span class="sourceLineNo">071</span>import org.apache.hadoop.hbase.security.AuthMethod;<a name="line.71"></a> -<span class="sourceLineNo">072</span>import org.apache.hadoop.hbase.security.HBasePolicyProvider;<a name="line.72"></a> -<span class="sourceLineNo">073</span>import org.apache.hadoop.hbase.security.SaslStatus;<a name="line.73"></a> -<span class="sourceLineNo">074</span>import org.apache.hadoop.hbase.security.SaslUtil;<a name="line.74"></a> -<span class="sourceLineNo">075</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.BlockingService;<a name="line.75"></a> -<span class="sourceLineNo">076</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.CodedInputStream;<a name="line.76"></a> -<span class="sourceLineNo">077</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.MethodDescriptor;<a name="line.77"></a> -<span class="sourceLineNo">078</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.Message;<a name="line.78"></a> -<span class="sourceLineNo">079</span>import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.79"></a> -<span class="sourceLineNo">080</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos.RequestHeader;<a name="line.80"></a> -<span class="sourceLineNo">081</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.81"></a> -<span class="sourceLineNo">082</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.82"></a> -<span class="sourceLineNo">083</span>import org.apache.hadoop.hbase.util.Threads;<a name="line.83"></a> -<span class="sourceLineNo">084</span>import org.apache.hadoop.io.IOUtils;<a name="line.84"></a> -<span class="sourceLineNo">085</span>import org.apache.hadoop.io.IntWritable;<a name="line.85"></a> -<span class="sourceLineNo">086</span>import org.apache.hadoop.security.authorize.ServiceAuthorizationManager;<a name="line.86"></a> -<span class="sourceLineNo">087</span>import org.apache.hadoop.util.StringUtils;<a name="line.87"></a> -<span class="sourceLineNo">088</span>import org.apache.htrace.TraceInfo;<a name="line.88"></a> -<span class="sourceLineNo">089</span><a name="line.89"></a> -<span class="sourceLineNo">090</span>import com.google.common.util.concurrent.ThreadFactoryBuilder;<a name="line.90"></a> +<span class="sourceLineNo">018</span>package org.apache.hadoop.hbase.ipc;<a name="line.18"></a> +<span class="sourceLineNo">019</span><a name="line.19"></a> +<span class="sourceLineNo">020</span>import java.io.IOException;<a name="line.20"></a> +<span class="sourceLineNo">021</span>import java.net.BindException;<a name="line.21"></a> +<span class="sourceLineNo">022</span>import java.net.InetSocketAddress;<a name="line.22"></a> +<span class="sourceLineNo">023</span>import java.net.ServerSocket;<a name="line.23"></a> +<span class="sourceLineNo">024</span>import java.net.SocketException;<a name="line.24"></a> +<span class="sourceLineNo">025</span>import java.net.UnknownHostException;<a name="line.25"></a> +<span class="sourceLineNo">026</span>import java.nio.channels.CancelledKeyException;<a name="line.26"></a> +<span class="sourceLineNo">027</span>import java.nio.channels.GatheringByteChannel;<a name="line.27"></a> +<span class="sourceLineNo">028</span>import java.nio.channels.SelectionKey;<a name="line.28"></a> +<span class="sourceLineNo">029</span>import java.nio.channels.Selector;<a name="line.29"></a> +<span class="sourceLineNo">030</span>import java.nio.channels.ServerSocketChannel;<a name="line.30"></a> +<span class="sourceLineNo">031</span>import java.nio.channels.SocketChannel;<a name="line.31"></a> +<span class="sourceLineNo">032</span>import java.util.Collections;<a name="line.32"></a> +<span class="sourceLineNo">033</span>import java.util.Iterator;<a name="line.33"></a> +<span class="sourceLineNo">034</span>import java.util.List;<a name="line.34"></a> +<span class="sourceLineNo">035</span>import java.util.Set;<a name="line.35"></a> +<span class="sourceLineNo">036</span>import java.util.Timer;<a name="line.36"></a> +<span class="sourceLineNo">037</span>import java.util.TimerTask;<a name="line.37"></a> +<span class="sourceLineNo">038</span>import java.util.concurrent.ConcurrentHashMap;<a name="line.38"></a> +<span class="sourceLineNo">039</span>import java.util.concurrent.ExecutorService;<a name="line.39"></a> +<span class="sourceLineNo">040</span>import java.util.concurrent.Executors;<a name="line.40"></a> +<span class="sourceLineNo">041</span>import java.util.concurrent.LinkedBlockingQueue;<a name="line.41"></a> +<span class="sourceLineNo">042</span>import java.util.concurrent.atomic.AtomicInteger;<a name="line.42"></a> +<span class="sourceLineNo">043</span><a name="line.43"></a> +<span class="sourceLineNo">044</span>import org.apache.hadoop.conf.Configuration;<a name="line.44"></a> +<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.CellScanner;<a name="line.45"></a> +<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.HConstants;<a name="line.46"></a> +<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.Server;<a name="line.47"></a> +<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.48"></a> +<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.classification.InterfaceStability;<a name="line.49"></a> +<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.monitoring.MonitoredRPCHandler;<a name="line.50"></a> +<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.security.HBasePolicyProvider;<a name="line.51"></a> +<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.BlockingService;<a name="line.52"></a> +<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.MethodDescriptor;<a name="line.53"></a> +<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.Message;<a name="line.54"></a> +<span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.55"></a> +<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.util.Threads;<a name="line.56"></a> +<span class="sourceLineNo">057</span>import org.apache.hadoop.io.IOUtils;<a name="line.57"></a> +<span class="sourceLineNo">058</span>import org.apache.hadoop.security.authorize.ServiceAuthorizationManager;<a name="line.58"></a> +<span class="sourceLineNo">059</span><a name="line.59"></a> +<span class="sourceLineNo">060</span>import com.google.common.util.concurrent.ThreadFactoryBuilder;<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> * The RPC server with native java NIO implementation deriving from Hadoop to<a name="line.63"></a> +<span class="sourceLineNo">064</span> * host protobuf described Services. It's the original one before HBASE-17262,<a name="line.64"></a> +<span class="sourceLineNo">065</span> * and the default RPC server for now.<a name="line.65"></a> +<span class="sourceLineNo">066</span> *<a name="line.66"></a> +<span class="sourceLineNo">067</span> * An RpcServer instance has a Listener that hosts the socket. Listener has fixed number<a name="line.67"></a> +<span class="sourceLineNo">068</span> * of Readers in an ExecutorPool, 10 by default. The Listener does an accept and then<a name="line.68"></a> +<span class="sourceLineNo">069</span> * round robin a Reader is chosen to do the read. The reader is registered on Selector. Read does<a name="line.69"></a> +<span class="sourceLineNo">070</span> * total read off the channel and the parse from which it makes a Call. The call is wrapped in a<a name="line.70"></a> +<span class="sourceLineNo">071</span> * CallRunner and passed to the scheduler to be run. Reader goes back to see if more to be done<a name="line.71"></a> +<span class="sourceLineNo">072</span> * and loops till done.<a name="line.72"></a> +<span class="sourceLineNo">073</span> *<a name="line.73"></a> +<span class="sourceLineNo">074</span> * <p>Scheduler can be variously implemented but default simple scheduler has handlers to which it<a name="line.74"></a> +<span class="sourceLineNo">075</span> * has given the queues into which calls (i.e. CallRunner instances) are inserted. Handlers run<a name="line.75"></a> +<span class="sourceLineNo">076</span> * taking from the queue. They run the CallRunner#run method on each item gotten from queue<a name="line.76"></a> +<span class="sourceLineNo">077</span> * and keep taking while the server is up.<a name="line.77"></a> +<span class="sourceLineNo">078</span> *<a name="line.78"></a> +<span class="sourceLineNo">079</span> * CallRunner#run executes the call. When done, asks the included Call to put itself on new<a name="line.79"></a> +<span class="sourceLineNo">080</span> * queue for Responder to pull from and return result to client.<a name="line.80"></a> +<span class="sourceLineNo">081</span> *<a name="line.81"></a> +<span class="sourceLineNo">082</span> * @see BlockingRpcClient<a name="line.82"></a> +<span class="sourceLineNo">083</span> */<a name="line.83"></a> +<span class="sourceLineNo">084</span>@InterfaceAudience.Private<a name="line.84"></a> +<span class="sourceLineNo">085</span>@InterfaceStability.Evolving<a name="line.85"></a> +<span class="sourceLineNo">086</span>public class SimpleRpcServer extends RpcServer {<a name="line.86"></a> +<span class="sourceLineNo">087</span><a name="line.87"></a> +<span class="sourceLineNo">088</span> protected int port; // port we listen on<a name="line.88"></a> +<span class="sourceLineNo">089</span> protected InetSocketAddress address; // inet address we listen on<a name="line.89"></a> +<span class="sourceLineNo">090</span> private int readThreads; // number of read threads<a name="line.90"></a> <span class="sourceLineNo">091</span><a name="line.91"></a> -<span class="sourceLineNo">092</span>/**<a name="line.92"></a> -<span class="sourceLineNo">093</span> * The RPC server with native java NIO implementation deriving from Hadoop to<a name="line.93"></a> -<span class="sourceLineNo">094</span> * host protobuf described Services. It's the original one before HBASE-17262,<a name="line.94"></a> -<span class="sourceLineNo">095</span> * and the default RPC server for now.<a name="line.95"></a> -<span class="sourceLineNo">096</span> *<a name="line.96"></a> -<span class="sourceLineNo">097</span> * An RpcServer instance has a Listener that hosts the socket. Listener has fixed number<a name="line.97"></a> -<span class="sourceLineNo">098</span> * of Readers in an ExecutorPool, 10 by default. The Listener does an accept and then<a name="line.98"></a> -<span class="sourceLineNo">099</span> * round robin a Reader is chosen to do the read. The reader is registered on Selector. Read does<a name="line.99"></a> -<span class="sourceLineNo">100</span> * total read off the channel and the parse from which it makes a Call. The call is wrapped in a<a name="line.100"></a> -<span class="sourceLineNo">101</span> * CallRunner and passed to the scheduler to be run. Reader goes back to see if more to be done<a name="line.101"></a> -<span class="sourceLineNo">102</span> * and loops till done.<a name="line.102"></a> -<span class="sourceLineNo">103</span> *<a name="line.103"></a> -<span class="sourceLineNo">104</span> * <p>Scheduler can be variously implemented but default simple scheduler has handlers to which it<a name="line.104"></a> -<span class="sourceLineNo">105</span> * has given the queues into which calls (i.e. CallRunner instances) are inserted. Handlers run<a name="line.105"></a> -<span class="sourceLineNo">106</span> * taking from the queue. They run the CallRunner#run method on each item gotten from queue<a name="line.106"></a> -<span class="sourceLineNo">107</span> * and keep taking while the server is up.<a name="line.107"></a> -<span class="sourceLineNo">108</span> *<a name="line.108"></a> -<span class="sourceLineNo">109</span> * CallRunner#run executes the call. When done, asks the included Call to put itself on new<a name="line.109"></a> -<span class="sourceLineNo">110</span> * queue for Responder to pull from and return result to client.<a name="line.110"></a> -<span class="sourceLineNo">111</span> *<a name="line.111"></a> -<span class="sourceLineNo">112</span> * @see BlockingRpcClient<a name="line.112"></a> -<span class="sourceLineNo">113</span> */<a name="line.113"></a> -<span class="sourceLineNo">114</span>@InterfaceAudience.Private<a name="line.114"></a> -<span class="sourceLineNo">115</span>@InterfaceStability.Evolving<a name="line.115"></a> -<span class="sourceLineNo">116</span>public class SimpleRpcServer extends RpcServer {<a name="line.116"></a> -<span class="sourceLineNo">117</span><a name="line.117"></a> -<span class="sourceLineNo">118</span> protected int port; // port we listen on<a name="line.118"></a> -<span class="sourceLineNo">119</span> protected InetSocketAddress address; // inet address we listen on<a name="line.119"></a> -<span class="sourceLineNo">120</span> private int readThreads; // number of read threads<a name="line.120"></a> -<span class="sourceLineNo">121</span><a name="line.121"></a> -<span class="sourceLineNo">122</span> protected int socketSendBufferSize;<a name="line.122"></a> -<span class="sourceLineNo">123</span> protected final long purgeTimeout; // in milliseconds<a name="line.123"></a> -<span class="sourceLineNo">124</span><a name="line.124"></a> -<span class="sourceLineNo">125</span> // maintains the set of client connections and handles idle timeouts<a name="line.125"></a> -<span class="sourceLineNo">126</span> private ConnectionManager connectionManager;<a name="line.126"></a> -<span class="sourceLineNo">127</span> private Listener listener = null;<a name="line.127"></a> -<span class="sourceLineNo">128</span> protected Responder responder = null;<a name="line.128"></a> -<span class="sourceLineNo">129</span><a name="line.129"></a> -<span class="sourceLineNo">130</span> /** Listens on the socket. Creates jobs for the handler threads*/<a name="line.130"></a> -<span class="sourceLineNo">131</span> private class Listener extends Thread {<a name="line.131"></a> -<span class="sourceLineNo">132</span><a name="line.132"></a> -<span class="sourceLineNo">133</span> private ServerSocketChannel acceptChannel = null; //the accept channel<a name="line.133"></a> -<span class="sourceLineNo">134</span> private Selector selector = null; //the selector that we use for the server<a name="line.134"></a> -<span class="sourceLineNo">135</span> private Reader[] readers = null;<a name="line.135"></a> -<span class="sourceLineNo">136</span> private int currentReader = 0;<a name="line.136"></a> -<span class="sourceLineNo">137</span> private final int readerPendingConnectionQueueLength;<a name="line.137"></a> -<span class="sourceLineNo">138</span><a name="line.138"></a> -<span class="sourceLineNo">139</span> private ExecutorService readPool;<a name="line.139"></a> -<span class="sourceLineNo">140</span><a name="line.140"></a> -<span class="sourceLineNo">141</span> public Listener(final String name) throws IOException {<a name="line.141"></a> -<span class="sourceLineNo">142</span> super(name);<a name="line.142"></a> -<span class="sourceLineNo">143</span> // The backlog of requests that we will have the serversocket carry.<a name="line.143"></a> -<span class="sourceLineNo">144</span> int backlogLength = conf.getInt("hbase.ipc.server.listen.queue.size", 128);<a name="line.144"></a> -<span class="sourceLineNo">145</span> readerPendingConnectionQueueLength =<a name="line.145"></a> -<span class="sourceLineNo">146</span> conf.getInt("hbase.ipc.server.read.connection-queue.size", 100);<a name="line.146"></a> -<span class="sourceLineNo">147</span> // Create a new server socket and set to non blocking mode<a name="line.147"></a> -<span class="sourceLineNo">148</span> acceptChannel = ServerSocketChannel.open();<a name="line.148"></a> -<span class="sourceLineNo">149</span> acceptChannel.configureBlocking(false);<a name="line.149"></a> -<span class="sourceLineNo">150</span><a name="line.150"></a> -<span class="sourceLineNo">151</span> // Bind the server socket to the binding addrees (can be different from the default interface)<a name="line.151"></a> -<span class="sourceLineNo">152</span> bind(acceptChannel.socket(), bindAddress, backlogLength);<a name="line.152"></a> -<span class="sourceLineNo">153</span> port = acceptChannel.socket().getLocalPort(); //Could be an ephemeral port<a name="line.153"></a> -<span class="sourceLineNo">154</span> address = (InetSocketAddress)acceptChannel.socket().getLocalSocketAddress();<a name="line.154"></a> -<span class="sourceLineNo">155</span> // create a selector;<a name="line.155"></a> -<span class="sourceLineNo">156</span> selector = Selector.open();<a name="line.156"></a> -<span class="sourceLineNo">157</span><a name="line.157"></a> -<span class="sourceLineNo">158</span> readers = new Reader[readThreads];<a name="line.158"></a> -<span class="sourceLineNo">159</span> // Why this executor thing? Why not like hadoop just start up all the threads? I suppose it<a name="line.159"></a> -<span class="sourceLineNo">160</span> // has an advantage in that it is easy to shutdown the pool.<a name="line.160"></a> -<span class="sourceLineNo">161</span> readPool = Executors.newFixedThreadPool(readThreads,<a name="line.161"></a> -<span class="sourceLineNo">162</span> new ThreadFactoryBuilder().setNameFormat(<a name="line.162"></a> -<span class="sourceLineNo">163</span> "RpcServer.reader=%d,bindAddress=" + bindAddress.getHostName() +<a name="line.163"></a> -<span class="sourceLineNo">164</span> ",port=" + port).setDaemon(true)<a name="line.164"></a> -<span class="sourceLineNo">165</span> .setUncaughtExceptionHandler(Threads.LOGGING_EXCEPTION_HANDLER).build());<a name="line.165"></a> -<span class="sourceLineNo">166</span> for (int i = 0; i < readThreads; ++i) {<a name="line.166"></a> -<span class="sourceLineNo">167</span> Reader reader = new Reader();<a name="line.167"></a> -<span class="sourceLineNo">168</span> readers[i] = reader;<a name="line.168"></a> -<span class="sourceLineNo">169</span> readPool.execute(reader);<a name="line.169"></a> +<span class="sourceLineNo">092</span> protected int socketSendBufferSize;<a name="line.92"></a> +<span class="sourceLineNo">093</span> protected final long purgeTimeout; // in milliseconds<a name="line.93"></a> +<span class="sourceLineNo">094</span><a name="line.94"></a> +<span class="sourceLineNo">095</span> // maintains the set of client connections and handles idle timeouts<a name="line.95"></a> +<span class="sourceLineNo">096</span> private ConnectionManager connectionManager;<a name="line.96"></a> +<span class="sourceLineNo">097</span> private Listener listener = null;<a name="line.97"></a> +<span class="sourceLineNo">098</span> protected SimpleRpcServerResponder responder = null;<a name="line.98"></a> +<span class="sourceLineNo">099</span><a name="line.99"></a> +<span class="sourceLineNo">100</span> /** Listens on the socket. Creates jobs for the handler threads*/<a name="line.100"></a> +<span class="sourceLineNo">101</span> private class Listener extends Thread {<a name="line.101"></a> +<span class="sourceLineNo">102</span><a name="line.102"></a> +<span class="sourceLineNo">103</span> private ServerSocketChannel acceptChannel = null; //the accept channel<a name="line.103"></a> +<span class="sourceLineNo">104</span> private Selector selector = null; //the selector that we use for the server<a name="line.104"></a> +<span class="sourceLineNo">105</span> private Reader[] readers = null;<a name="line.105"></a> +<span class="sourceLineNo">106</span> private int currentReader = 0;<a name="line.106"></a> +<span class="sourceLineNo">107</span> private final int readerPendingConnectionQueueLength;<a name="line.107"></a> +<span class="sourceLineNo">108</span><a name="line.108"></a> +<span class="sourceLineNo">109</span> private ExecutorService readPool;<a name="line.109"></a> +<span class="sourceLineNo">110</span><a name="line.110"></a> +<span class="sourceLineNo">111</span> public Listener(final String name) throws IOException {<a name="line.111"></a> +<span class="sourceLineNo">112</span> super(name);<a name="line.112"></a> +<span class="sourceLineNo">113</span> // The backlog of requests that we will have the serversocket carry.<a name="line.113"></a> +<span class="sourceLineNo">114</span> int backlogLength = conf.getInt("hbase.ipc.server.listen.queue.size", 128);<a name="line.114"></a> +<span class="sourceLineNo">115</span> readerPendingConnectionQueueLength =<a name="line.115"></a> +<span class="sourceLineNo">116</span> conf.getInt("hbase.ipc.server.read.connection-queue.size", 100);<a name="line.116"></a> +<span class="sourceLineNo">117</span> // Create a new server socket and set to non blocking mode<a name="line.117"></a> +<span class="sourceLineNo">118</span> acceptChannel = ServerSocketChannel.open();<a name="line.118"></a> +<span class="sourceLineNo">119</span> acceptChannel.configureBlocking(false);<a name="line.119"></a> +<span class="sourceLineNo">120</span><a name="line.120"></a> +<span class="sourceLineNo">121</span> // Bind the server socket to the binding addrees (can be different from the default interface)<a name="line.121"></a> +<span class="sourceLineNo">122</span> bind(acceptChannel.socket(), bindAddress, backlogLength);<a name="line.122"></a> +<span class="sourceLineNo">123</span> port = acceptChannel.socket().getLocalPort(); //Could be an ephemeral port<a name="line.123"></a> +<span class="sourceLineNo">124</span> address = (InetSocketAddress)acceptChannel.socket().getLocalSocketAddress();<a name="line.124"></a> +<span class="sourceLineNo">125</span> // create a selector;<a name="line.125"></a> +<span class="sourceLineNo">126</span> selector = Selector.open();<a name="line.126"></a> +<span class="sourceLineNo">127</span><a name="line.127"></a> +<span class="sourceLineNo">128</span> readers = new Reader[readThreads];<a name="line.128"></a> +<span class="sourceLineNo">129</span> // Why this executor thing? Why not like hadoop just start up all the threads? I suppose it<a name="line.129"></a> +<span class="sourceLineNo">130</span> // has an advantage in that it is easy to shutdown the pool.<a name="line.130"></a> +<span class="sourceLineNo">131</span> readPool = Executors.newFixedThreadPool(readThreads,<a name="line.131"></a> +<span class="sourceLineNo">132</span> new ThreadFactoryBuilder().setNameFormat(<a name="line.132"></a> +<span class="sourceLineNo">133</span> "RpcServer.reader=%d,bindAddress=" + bindAddress.getHostName() +<a name="line.133"></a> +<span class="sourceLineNo">134</span> ",port=" + port).setDaemon(true)<a name="line.134"></a> +<span class="sourceLineNo">135</span> .setUncaughtExceptionHandler(Threads.LOGGING_EXCEPTION_HANDLER).build());<a name="line.135"></a> +<span class="sourceLineNo">136</span> for (int i = 0; i < readThreads; ++i) {<a name="line.136"></a> +<span class="sourceLineNo">137</span> Reader reader = new Reader();<a name="line.137"></a> +<span class="sourceLineNo">138</span> readers[i] = reader;<a name="line.138"></a> +<span class="sourceLineNo">139</span> readPool.execute(reader);<a name="line.139"></a> +<span class="sourceLineNo">140</span> }<a name="line.140"></a> +<span class="sourceLineNo">141</span> LOG.info(getName() + ": started " + readThreads + " reader(s) listening on port=" + port);<a name="line.141"></a> +<span class="sourceLineNo">142</span><a name="line.142"></a> +<span class="sourceLineNo">143</span> // Register accepts on the server socket with the selector.<a name="line.143"></a> +<span class="sourceLineNo">144</span> acceptChannel.register(selector, SelectionKey.OP_ACCEPT);<a name="line.144"></a> +<span class="sourceLineNo">145</span> this.setName("RpcServer.listener,port=" + port);<a name="line.145"></a> +<span class="sourceLineNo">146</span> this.setDaemon(true);<a name="line.146"></a> +<span class="sourceLineNo">147</span> }<a name="line.147"></a> +<span class="sourceLineNo">148</span><a name="line.148"></a> +<span class="sourceLineNo">149</span><a name="line.149"></a> +<span class="sourceLineNo">150</span> private class Reader implements Runnable {<a name="line.150"></a> +<span class="sourceLineNo">151</span> final private LinkedBlockingQueue<SimpleServerRpcConnection> pendingConnections;<a name="line.151"></a> +<span class="sourceLineNo">152</span> private final Selector readSelector;<a name="line.152"></a> +<span class="sourceLineNo">153</span><a name="line.153"></a> +<span class="sourceLineNo">154</span> Reader() throws IOException {<a name="line.154"></a> +<span class="sourceLineNo">155</span> this.pendingConnections = new LinkedBlockingQueue<>(readerPendingConnectionQueueLength);<a name="line.155"></a> +<span class="sourceLineNo">156</span> this.readSelector = Selector.open();<a name="line.156"></a> +<span class="sourceLineNo">157</span> }<a name="line.157"></a> +<span class="sourceLineNo">158</span><a name="line.158"></a> +<span class="sourceLineNo">159</span> @Override<a name="line.159"></a> +<span class="sourceLineNo">160</span> public void run() {<a name="line.160"></a> +<span class="sourceLineNo">161</span> try {<a name="line.161"></a> +<span class="sourceLineNo">162</span> doRunLoop();<a name="line.162"></a> +<span class="sourceLineNo">163</span> } finally {<a name="line.163"></a> +<span class="sourceLineNo">164</span> try {<a name="line.164"></a> +<span class="sourceLineNo">165</span> readSelector.close();<a name="line.165"></a> +<span class="sourceLineNo">166</span> } catch (IOException ioe) {<a name="line.166"></a> +<span class="sourceLineNo">167</span> LOG.error(getName() + ": error closing read selector in " + getName(), ioe);<a name="line.167"></a> +<span class="sourceLineNo">168</span> }<a name="line.168"></a> +<span class="sourceLineNo">169</span> }<a name="line.169"></a> <span class="sourceLineNo">170</span> }<a name="line.170"></a> -<span class="sourceLineNo">171</span> LOG.info(getName() + ": started " + readThreads + " reader(s) listening on port=" + port);<a name="line.171"></a> -<span class="sourceLineNo">172</span><a name="line.172"></a> -<span class="sourceLineNo">173</span> // Register accepts on the server socket with the selector.<a name="line.173"></a> -<span class="sourceLineNo">174</span> acceptChannel.register(selector, SelectionKey.OP_ACCEPT);<a name="line.174"></a> -<span class="sourceLineNo">175</span> this.setName("RpcServer.listener,port=" + port);<a name="line.175"></a> -<span class="sourceLineNo">176</span> this.setDaemon(true);<a name="line.176"></a> -<span class="sourceLineNo">177</span> }<a name="line.177"></a> -<span class="sourceLineNo">178</span><a name="line.178"></a> -<span class="sourceLineNo">179</span><a name="line.179"></a> -<span class="sourceLineNo">180</span> private class Reader implements Runnable {<a name="line.180"></a> -<span class="sourceLineNo">181</span> final private LinkedBlockingQueue<Connection> pendingConnections;<a name="line.181"></a> -<span class="sourceLineNo">182</span> private final Selector readSelector;<a name="line.182"></a> -<span class="sourceLineNo">183</span><a name="line.183"></a> -<span class="sourceLineNo">184</span> Reader() throws IOException {<a name="line.184"></a> -<span class="sourceLineNo">185</span> this.pendingConnections = new LinkedBlockingQueue<>(readerPendingConnectionQueueLength);<a name="line.185"></a> -<span class="sourceLineNo">186</span> this.readSelector = Selector.open();<a name="line.186"></a> -<span class="sourceLineNo">187</span> }<a name="line.187"></a> -<span class="sourceLineNo">188</span><a name="line.188"></a> -<span class="sourceLineNo">189</span> @Override<a name="line.189"></a> -<span class="sourceLineNo">190</span> public void run() {<a name="line.190"></a> -<span class="sourceLineNo">191</span> try {<a name="line.191"></a> -<span class="sourceLineNo">192</span> doRunLoop();<a name="line.192"></a> -<span class="sourceLineNo">193</span> } finally {<a name="line.193"></a> -<span class="sourceLineNo">194</span> try {<a name="line.194"></a> -<span class="sourceLineNo">195</span> readSelector.close();<a name="line.195"></a> -<span class="sourceLineNo">196</span> } catch (IOException ioe) {<a name="line.196"></a> -<span class="sourceLineNo">197</span> LOG.error(getName() + ": error closing read selector in " + getName(), ioe);<a name="line.197"></a> -<span class="sourceLineNo">198</span> }<a name="line.198"></a> -<span class="sourceLineNo">199</span> }<a name="line.199"></a> -<span class="sourceLineNo">200</span> }<a name="line.200"></a> -<span class="sourceLineNo">201</span><a name="line.201"></a> -<span class="sourceLineNo">202</span> private synchronized void doRunLoop() {<a name="line.202"></a> -<span class="sourceLineNo">203</span> while (running) {<a name="line.203"></a> -<span class="sourceLineNo">204</span> try {<a name="line.204"></a> -<span class="sourceLineNo">205</span> // Consume as many connections as currently queued to avoid<a name="line.205"></a> -<span class="sourceLineNo">206</span> // unbridled acceptance of connections that starves the select<a name="line.206"></a> -<span class="sourceLineNo">207</span> int size = pendingConnections.size();<a name="line.207"></a> -<span class="sourceLineNo">208</span> for (int i=size; i>0; i--) {<a name="line.208"></a> -<span class="sourceLineNo">209</span> Connection conn = pendingConnections.take();<a name="line.209"></a> -<span class="sourceLineNo">210</span> conn.channel.register(readSelector, SelectionKey.OP_READ, conn);<a name="line.210"></a> -<span class="sourceLineNo">211</span> }<a name="line.211"></a> -<span class="sourceLineNo">212</span> readSelector.select();<a name="line.212"></a> -<span class="sourceLineNo">213</span> Iterator<SelectionKey> iter = readSelector.selectedKeys().iterator();<a name="line.213"></a> -<span class="sourceLineNo">214</span> while (iter.hasNext()) {<a name="line.214"></a> -<span class="sourceLineNo">215</span> SelectionKey key = iter.next();<a name="line.215"></a> -<span class="sourceLineNo">216</span> iter.remove();<a name="line.216"></a> -<span class="sourceLineNo">217</span> if (key.isValid()) {<a name="line.217"></a> -<span class="sourceLineNo">218</span> if (key.isReadable()) {<a name="line.218"></a> -<span class="sourceLineNo">219</span> doRead(key);<a name="line.219"></a> -<span class="sourceLineNo">220</span> }<a name="line.220"></a> -<span class="sourceLineNo">221</span> }<a name="line.221"></a> -<span class="sourceLineNo">222</span> key = null;<a name="line.222"></a> -<span class="sourceLineNo">223</span> }<a name="line.223"></a> -<span class="sourceLineNo">224</span> } catch (InterruptedException e) {<a name="line.224"></a> -<span class="sourceLineNo">225</span> if (running) { // unexpected -- log it<a name="line.225"></a> -<span class="sourceLineNo">226</span> LOG.info(Thread.currentThread().getName() + " unexpectedly interrupted", e);<a name="line.226"></a> -<span class="sourceLineNo">227</span> }<a name="line.227"></a> -<span class="sourceLineNo">228</span> } catch (CancelledKeyException e) {<a name="line.228"></a> -<span class="sourceLineNo">229</span> LOG.error(getName() + ": CancelledKeyException in Reader", e);<a name="line.229"></a> -<span class="sourceLineNo">230</span> } catch (IOException ex) {<a name="line.230"></a> -<span class="sourceLineNo">231</span> LOG.info(getName() + ": IOException in Reader", ex);<a name="line.231"></a> -<span class="sourceLineNo">232</span> }<a name="line.232"></a> -<span class="sourceLineNo">233</span> }<a name="line.233"></a> -<span class="sourceLineNo">234</span> }<a name="line.234"></a> -<span class="sourceLineNo">235</span><a name="line.235"></a> -<span class="sourceLineNo">236</span> /**<a name="line.236"></a> -<span class="sourceLineNo">237</span> * Updating the readSelector while it's being used is not thread-safe,<a name="line.237"></a> -<span class="sourceLineNo">238</span> * so the connection must be queued. The reader will drain the queue<a name="line.238"></a> -<span class="sourceLineNo">239</span> * and update its readSelector before performing the next select<a name="line.239"></a> -<span class="sourceLineNo">240</span> */<a name="line.240"></a> -<span class="sourceLineNo">241</span> public void addConnection(Connection conn) throws IOException {<a name="line.241"></a> -<span class="sourceLineNo">242</span> pendingConnections.add(conn);<a name="line.242"></a> -<span class="sourceLineNo">243</span> readSelector.wakeup();<a name="line.243"></a> -<span class="sourceLineNo">244</span> }<a name="line.244"></a> -<span class="sourceLineNo">245</span> }<a name="line.245"></a> -<span class="sourceLineNo">246</span><a name="line.246"></a> -<span class="sourceLineNo">247</span> @Override<a name="line.247"></a> -<span class="sourceLineNo">248</span> @edu.umd.cs.findbugs.annotations.SuppressWarnings(value="IS2_INCONSISTENT_SYNC",<a name="line.248"></a> -<span class="sourceLineNo">249</span> justification="selector access is not synchronized; seems fine but concerned changing " +<a name="line.249"></a> -<span class="sourceLineNo">250</span> "it will have per impact")<a name="line.250"></a> -<span class="sourceLineNo">251</span> public void run() {<a name="line.251"></a> -<span class="sourceLineNo">252</span> LOG.info(getName() + ": starting");<a name="line.252"></a> -<span class="sourceLineNo">253</span> connectionManager.startIdleScan();<a name="line.253"></a> -<span class="sourceLineNo">254</span> while (running) {<a name="line.254"></a> -<span class="sourceLineNo">255</span> SelectionKey key = null;<a name="line.255"></a> -<span class="sourceLineNo">256</span> try {<a name="line.256"></a> -<span class="sourceLineNo">257</span> selector.select(); // FindBugs IS2_INCONSISTENT_SYNC<a name="line.257"></a> -<span class="sourceLineNo">258</span> Iterator<SelectionKey> iter = selector.selectedKeys().iterator();<a name="line.258"></a> -<span class="sourceLineNo">259</span> while (iter.hasNext()) {<a name="line.259"></a> -<span class="sourceLineNo">260</span> key = iter.next();<a name="line.260"></a> -<span class="sourceLineNo">261</span> iter.remove();<a name="line.261"></a> -<span class="sourceLineNo">262</span> try {<a name="line.262"></a> -<span class="sourceLineNo">263</span> if (key.isValid()) {<a name="line.263"></a> -<span class="sourceLineNo">264</span> if (key.isAcceptable())<a name="line.264"></a> -<span class="sourceLineNo">265</span> doAccept(key);<a name="line.265"></a> -<span class="sourceLineNo">266</span> }<a name="line.266"></a> -<span class="sourceLineNo">267</span> } catch (IOException ignored) {<a name="line.267"></a> -<span class="sourceLineNo">268</span> if (LOG.isTraceEnabled()) LOG.trace("ignored", ignored);<a name="line.268"></a> -<span class="sourceLineNo">269</span> }<a name="line.269"></a> -<span class="sourceLineNo">270</span> key = null;<a name="line.270"></a> -<span class="sourceLineNo">271</span> }<a name="line.271"></a> -<span class="sourceLineNo">272</span> } catch (OutOfMemoryError e) {<a name="line.272"></a> -<span class="sourceLineNo">273</span> if (errorHandler != null) {<a name="line.273"></a> -<span class="sourceLineNo">274</span> if (errorHandler.checkOOME(e)) {<a name="line.274"></a> -<span class="sourceLineNo">275</span> LOG.info(getName() + ": exiting on OutOfMemoryError");<a name="line.275"></a> -<span class="sourceLineNo">276</span> closeCurrentConnection(key, e);<a name="line.276"></a> -<span class="sourceLineNo">277</span> connectionManager.closeIdle(true);<a name="line.277"></a> -<span class="sourceLineNo">278</span> return;<a name="line.278"></a> -<span class="sourceLineNo">279</span> }<a name="line.279"></a> -<span class="sourceLineNo">280</span> } else {<a name="line.280"></a> -<span class="sourceLineNo">281</span> // we can run out of memory if we have too many threads<a name="line.281"></a> -<span class="sourceLineNo">282</span> // log the event and sleep for a minute and give<a name="line.282"></a> -<span class="sourceLineNo">283</span> // some thread(s) a chance to finish<a name="line.283"></a> -<span class="sourceLineNo">284</span> LOG.warn(getName() + ": OutOfMemoryError in server select", e);<a name="line.284"></a> -<span class="sourceLineNo">285</span> closeCurrentConnection(key, e);<a name="line.285"></a> -<span class="sourceLineNo">286</span> connectionManager.closeIdle(true);<a name="line.286"></a> -<span class="sourceLineNo">287</span> try {<a name="line.287"></a> -<span class="sourceLineNo">288</span> Thread.sleep(60000);<a name="line.288"></a> -<span class="sourceLineNo">289</span> } catch (InterruptedException ex) {<a name="line.289"></a> -<span class="sourceLineNo">290</span> LOG.debug("Interrupted while sleeping");<a name="line.290"></a> -<span class="sourceLineNo">291</span> }<a name="line.291"></a> -<span class="sourceLineNo">292</span> }<a name="line.292"></a> -<span class="sourceLineNo">293</span> } catch (Exception e) {<a name="line.293"></a> -<span class="sourceLineNo">294</span> closeCurrentConnection(key, e);<a name="line.294"></a> -<span class="sourceLineNo">295</span> }<a name="line.295"></a> -<span class="sourceLineNo">296</span> }<a name="line.296"></a> -<span class="sourceLineNo">297</span> LOG.info(getName() + ": stopping");<a name="line.297"></a> -<span class="sourceLineNo">298</span> synchronized (this) {<a name="line.298"></a> -<span class="sourceLineNo">299</span> try {<a name="line.299"></a> -<span class="sourceLineNo">300</span> acceptChannel.close();<a name="line.300"></a> -<span class="sourceLineNo">301</span> selector.close();<a name="line.301"></a> -<span class="sourceLineNo">302</span> } catch (IOException ignored) {<a name="line.302"></a> -<span class="sourceLineNo">303</span> if (LOG.isTraceEnabled()) LOG.trace("ignored", ignored);<a name="line.303"></a> -<span class="sourceLineNo">304</span> }<a name="line.304"></a> -<span class="sourceLineNo">305</span><a name="line.305"></a> -<span class="sourceLineNo">306</span> selector= null;<a name="line.306"></a> -<span class="sourceLineNo">307</span> acceptChannel= null;<a name="line.307"></a> -<span class="sourceLineNo">308</span><a name="line.308"></a> -<span class="sourceLineNo">309</span> // close all connections<a name="line.309"></a> -<span class="sourceLineNo">310</span> connectionManager.stopIdleScan();<a name="line.310"></a> -<span class="sourceLineNo">311</span> connectionManager.closeAll();<a name="line.311"></a> -<span class="sourceLineNo">312</span> }<a name="line.312"></a> -<span class="sourceLineNo">313</span> }<a name="line.313"></a> -<span class="sourceLineNo">314</span><a name="line.314"></a> -<span class="sourceLineNo">315</span> private void closeCurrentConnection(SelectionKey key, Throwable e) {<a name="line.315"></a> -<span class="sourceLineNo">316</span> if (key != null) {<a name="line.316"></a> -<span class="sourceLineNo">317</span> Connection c = (Connection)key.attachment();<a name="line.317"></a> -<span class="sourceLineNo">318</span> if (c != null) {<a name="line.318"></a> -<span class="sourceLineNo">319</span> closeConnection(c);<a name="line.319"></a> -<span class="sourceLineNo">320</span> key.attach(null);<a name="line.320"></a> -<span class="sourceLineNo">321</span> }<a name="line.321"></a> -<span class="sourceLineNo">322</span> }<a name="line.322"></a> -<span class="sourceLineNo">323</span> }<a name="line.323"></a> -<span class="sourceLineNo">324</span><a name="line.324"></a> -<span class="sourceLineNo">325</span> InetSocketAddress getAddress() {<a name="line.325"></a> -<span class="sourceLineNo">326</span> return address;<a name="line.326"></a> -<span class="sourceLineNo">327</span> }<a name="line.327"></a> -<span class="sourceLineNo">328</span><a name="line.328"></a> -<span class="sourceLineNo">329</span> void doAccept(SelectionKey key) throws InterruptedException, IOException, OutOfMemoryError {<a name="line.329"></a> -<span class="sourceLineNo">330</span> ServerSocketChannel server = (ServerSocketChannel) key.channel();<a name="line.330"></a> -<span class="sourceLineNo">331</span> SocketChannel channel;<a name="line.331"></a> -<span class="sourceLineNo">332</span> while ((channel = server.accept()) != null) {<a name="line.332"></a> -<span class="sourceLineNo">333</span> channel.configureBlocking(false);<a name="line.333"></a> -<span class="sourceLineNo">334</span> channel.socket().setTcpNoDelay(tcpNoDelay);<a name="line.334"></a> -<span class="sourceLineNo">335</span> channel.socket().setKeepAlive(tcpKeepAlive);<a name="line.335"></a> -<span class="sourceLineNo">336</span> Reader reader = getReader();<a name="line.336"></a> -<span class="sourceLineNo">337</span> Connection c = connectionManager.register(channel);<a name="line.337"></a> -<span class="sourceLineNo">338</span> // If the connectionManager can't take it, close the connection.<a name="line.338"></a> -<span class="sourceLineNo">339</span> if (c == null) {<a name="line.339"></a> -<span class="sourceLineNo">340</span> if (channel.isOpen()) {<a name="line.340"></a> -<span class="sourceLineNo">341</span> IOUtils.cleanup(null, channel);<a name="line.341"></a> -<span class="sourceLineNo">342</span> }<a name="line.342"></a> -<span class="sourceLineNo">343</span> continue;<a name="line.343"></a> -<span class="sourceLineNo">344</span> }<a name="line.344"></a> -<span class="sourceLineNo">345</span> key.attach(c); // so closeCurrentConnection can get the object<a name="line.345"></a> -<span class="sourceLineNo">346</span> reader.addConnection(c);<a name="line.346"></a> -<span class="sourceLineNo">347</span> }<a name="line.347"></a> -<span class="sourceLineNo">348</span> }<a name="line.348"></a> -<span class="sourceLineNo">349</span><a name="line.349"></a> -<span class="sourceLineNo">350</span> void doRead(SelectionKey key) throws InterruptedException {<a name="line.350"></a> -<span class="sourceLineNo">351</span> int count;<a name="line.351"></a> -<span class="sourceLineNo">352</span> Connection c = (Connection) key.attachment();<a name="line.352"></a> -<span class="sourceLineNo">353</span> if (c == null) {<a name="line.353"></a> -<span class="sourceLineNo">354</span> return;<a name="line.354"></a> -<span class="sourceLineNo">355</span> }<a name="line.355"></a> -<span class="sourceLineNo">356</span> c.setLastContact(System.currentTimeMillis());<a name="line.356"></a> -<span class="sourceLineNo">357</span> try {<a name="line.357"></a> -<span class="sourceLineNo">358</span> count = c.readAndProcess();<a name="line.358"></a> -<span class="sourceLineNo">359</span> } catch (InterruptedException ieo) {<a name="line.359"></a> -<span class="sourceLineNo">360</span> LOG.info(Thread.currentThread().getName() + ": readAndProcess caught InterruptedException", ieo);<a name="line.360"></a> -<span class="sourceLineNo">361</span> throw ieo;<a name="line.361"></a> -<span class="sourceLineNo">362</span> } catch (Exception e) {<a name="line.362"></a> -<span class="sourceLineNo">363</span> if (LOG.isDebugEnabled()) {<a name="line.363"></a> -<span class="sourceLineNo">364</span> LOG.debug(getName() + ": Caught exception while reading:", e);<a name="line.364"></a> -<span class="sourceLineNo">365</span> }<a name="line.365"></a> -<span class="sourceLineNo">366</span> count = -1; //so that the (count < 0) block is executed<a name="line.366"></a> -<span class="sourceLineNo">367</span> }<a name="line.367"></a> -<span class="sourceLineNo">368</span> if (count < 0) {<a name="line.368"></a> -<span class="sourceLineNo">369</span> closeConnection(c);<a name="line.369"></a> -<span class="sourceLineNo">370</span> c = null;<a name="line.370"></a> -<span class="sourceLineNo">371</span> } else {<a name="line.371"></a> -<span class="sourceLineNo">372</span> c.setLastContact(System.currentTimeMillis());<a name="line.372"></a> -<span class="sourceLineNo">373</span> }<a name="line.373"></a> -<span class="sourceLineNo">374</span> }<a name="line.374"></a> -<span class="sourceLineNo">375</span><a name="line.375"></a> -<span class="sourceLineNo">376</span> synchronized void doStop() {<a name="line.376"></a> -<span class="sourceLineNo">377</span> if (selector != null) {<a name="line.377"></a> -<span class="sourceLineNo">378</span> selector.wakeup();<a name="line.378"></a> -<span class="sourceLineNo">379</span> Thread.yield();<a name="line.379"></a> -<span class="sourceLineNo">380</span> }<a name="line.380"></a> -<span class="sourceLineNo">381</span> if (acceptChannel != null) {<a name="line.381"></a> -<span class="sourceLineNo">382</span> try {<a name="line.382"></a> -<span class="sourceLineNo">383</span> acceptChannel.socket().close();<a name="line.383"></a> -<span class="sourceLineNo">384</span> } catch (IOException e) {<a name="line.384"></a> -<span class="sourceLineNo">385</span> LOG.info(getName() + ": exception in closing listener socket. " + e);<a name="line.385"></a> -<span class="sourceLineNo">386</span> }<a name="line.386"></a> -<span class="sourceLineNo">387</span> }<a name="line.387"></a> -<span class="sourceLineNo">388</span> readPool.shutdownNow();<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> // The method that will return the next reader to work with<a name="line.391"></a> -<span class="sourceLineNo">392</span> // Simplistic implementation of round robin for now<a name="line.392"></a> -<span class="sourceLineNo">393</span> Reader getReader() {<a name="line.393"></a> -<span class="sourceLineNo">394</span> currentReader = (currentReader + 1) % readers.length;<a name="line.394"></a> -<span class="sourceLineNo">395</span> return readers[currentReader];<a name="line.395"></a> -<span class="sourceLineNo">396</span> }<a name="line.396"></a> -<span class="sourceLineNo">397</span> }<a name="line.397"></a> +<span class="sourceLineNo">171</span><a name="line.171"></a> +<span class="sourceLineNo">172</span> private synchronized void doRunLoop() {<a name="line.172"></a> +<span class="sourceLineNo">173</span> while (running) {<a name="line.173"></a> +<span class="sourceLineNo">174</span> try {<a name="line.174"></a> +<span class="sourceLineNo">175</span> // Consume as many connections as currently queued to avoid<a name="line.175"></a> +<span class="sourceLineNo">176</span> // unbridled acceptance of connections that starves the select<a name="line.176"></a> +<span class="sourceLineNo">177</span> int size = pendingConnections.size();<a name="line.177"></a> +<span class="sourceLineNo">178</span> for (int i=size; i>0; i--) {<a name="line.178"></a> +<span class="sourceLineNo">179</span> SimpleServerRpcConnection conn = pendingConnections.take();<a name="line.179"></a> +<span class="sourceLineNo">180</span> conn.channel.register(readSelector, SelectionKey.OP_READ, conn);<a name="line.180"></a> +<span class="sourceLineNo">181</span> }<a name="line.181"></a> +<span class="sourceLineNo">182</span> readSelector.select();<a name="line.182"></a> +<span class="sourceLineNo">183</span> Iterator<SelectionKey> iter = readSelector.selectedKeys().iterator();<a name="line.183"></a> +<span class="sourceLineNo">184</span> while (iter.hasNext()) {<a name="line.184"></a> +<span class="sourceLineNo">185</span> SelectionKey key = iter.next();<a name="line.185"></a> +<span class="sourceLineNo">186</span> iter.remove();<a name="line.186"></a> +<span class="sourceLineNo">187</span> if (key.isValid()) {<a name="line.187"></a> +<span class="sourceLineNo">188</span> if (key.isReadable()) {<a name="line.188"></a> +<span class="sourceLineNo">189</span> doRead(key);<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> key = null;<a name="line.192"></a> +<span class="sourceLineNo">193</span> }<a name="line.193"></a> +<span class="sourceLineNo">194</span> } catch (InterruptedException e) {<a name="line.194"></a> +<span class="sourceLineNo">195</span> if (running) { // unexpected -- log it<a name="line.195"></a> +<span class="sourceLineNo">196</span> LOG.info(Thread.currentThread().getName() + " unexpectedly interrupted", e);<a name="line.196"></a> +<span class="sourceLineNo">197</span> }<a name="line.197"></a> +<span class="sourceLineNo">198</span> } catch (CancelledKeyException e) {<a name="line.198"></a> +<span class="sourceLineNo">199</span> LOG.error(getName() + ": CancelledKeyException in Reader", e);<a name="line.199"></a> +<span class="sourceLineNo">200</span> } catch (IOException ex) {<a name="line.200"></a> +<span class="sourceLineNo">201</span> LOG.info(getName() + ": IOException in Reader", ex);<a name="line.201"></a> +<span class="sourceLineNo">202</span> }<a name="line.202"></a> +<span class="sourceLineNo">203</span> }<a name="line.203"></a> +<span class="sourceLineNo">204</span> }<a name="line.204"></a> +<span class="sourceLineNo">205</span><a name="line.205"></a> +<span class="sourceLineNo">206</span> /**<a name="line.206"></a> +<span class="sourceLineNo">207</span> * Updating the readSelector while it's being used is not thread-safe,<a name="line.207"></a> +<span class="sourceLineNo">208</span> * so the connection must be queued. The reader will drain the queue<a name="line.208"></a> +<span class="sourceLineNo">209</span> * and update its readSelector before performing the next select<a name="line.209"></a> +<span class="sourceLineNo">210</span> */<a name="line.210"></a> +<span class="sourceLineNo">211</span> public void addConnection(SimpleServerRpcConnection conn) throws IOException {<a name="line.211"></a> +<span class="sourceLineNo">212</span> pendingConnections.add(conn);<a name="line.212"></a> +<span class="sourceLineNo">213</span> readSelector.wakeup();<a name="line.213"></a> +<span class="sourceLineNo">214</span> }<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> @Override<a name="line.217"></a> +<span class="sourceLineNo">218</span> @edu.umd.cs.findbugs.annotations.SuppressWarnings(value="IS2_INCONSISTENT_SYNC",<a name="line.218"></a> +<span class="sourceLineNo">219</span> justification="selector access is not synchronized; seems fine but concerned changing " +<a name="line.219"></a> +<span class="sourceLineNo">220</span> "it will have per impact")<a name="line.220"></a> +<span class="sourceLineNo">221</span> public void run() {<a name="line.221"></a> +<span class="sourceLineNo">222</span> LOG.info(getName() + ": starting");<a name="line.222"></a> +<span class="sourceLineNo">223</span> connectionManager.startIdleScan();<a name="line.223"></a> +<span class="sourceLineNo">224</span> while (running) {<a name="line.224"></a> +<span class="sourceLineNo">225</span> SelectionKey key = null;<a name="line.225"></a> +<span class="sourceLineNo">226</span> try {<a name="line.226"></a> +<span class="sourceLineNo">227</span> selector.select(); // FindBugs IS2_INCONSISTENT_SYNC<a name="line.227"></a> +<span class="sourceLineNo">228</span> Iterator<SelectionKey> iter = selector.selectedKeys().iterator();<a name="line.228"></a> +<span class="sourceLineNo">229</span> while (iter.hasNext()) {<a name="line.229"></a> +<span class="sourceLineNo">230</span> key = iter.next();<a name="line.230"></a> +<span class="sourceLineNo">231</span> iter.remove();<a name="line.231"></a> +<span class="sourceLineNo">232</span> try {<a name="line.232"></a> +<span class="sourceLineNo">233</span> if (key.isValid()) {<a name="line.233"></a> +<span class="sourceLineNo">234</span> if (key.isAcceptable())<a name="line.234"></a> +<span class="sourceLineNo">235</span> doAccept(key);<a name="line.235"></a> +<span class="sourceLineNo">236</span> }<a name="line.236"></a> +<span class="sourceLineNo">237</span> } catch (IOException ignored) {<a name="line.237"></a> +<span class="sourceLineNo">238</span> if (LOG.isTraceEnabled()) LOG.trace("ignored", ignored);<a name="line.238"></a> +<span class="sourceLineNo">239</span> }<a name="line.239"></a> +<span class="sourceLineNo">240</span> key = null;<a name="line.240"></a> +<span class="sourceLineNo">241</span> }<a name="line.241"></a> +<span class="sourceLineNo">242</span> } catch (OutOfMemoryError e) {<a name="line.242"></a> +<span class="sourceLineNo">243</span> if (errorHandler != null) {<a name="line.243"></a> +<span class="sourceLineNo">244</span> if (errorHandler.checkOOME(e)) {<a name="line.244"></a> +<span class="sourceLineNo">245</span> LOG.info(getName() + ": exiting on OutOfMemoryError");<a name="line.245"></a> +<span class="sourceLineNo">246</span> closeCurrentConnection(key, e);<a name="line.246"></a> +<span class="sourceLineNo">247</span> connectionManager.closeIdle(true);<a name="line.247"></a> +<span class="sourceLineNo">248</span> return;<a name="line.248"></a> +<span class="sourceLineNo">249</span> }<a name="line.249"></a> +<span class="sourceLineNo">250</span> } else {<a name="line.250"></a> +<span class="sourceLineNo">251</span> // we can run out of memory if we have too many threads<a name="line.251"></a> +<span class="sourceLineNo">252</span> // log the event and sleep for a minute and give<a name="line.252"></a> +<span class="sourceLineNo">253</span> // some thread(s) a chance to finish<a name="line.253"></a> +<span class="sourceLineNo">254</span> LOG.warn(getName() + ": OutOfMemoryError in server select", e);<a name="line.254"></a> +<span class="sourceLineNo">255</span> closeCurrentConnection(key, e);<a name="line.255"></a> +<span class="sourceLineNo">256</span> connectionManager.closeIdle(true);<a name="line.256"></a> +<span class="sourceLineNo">257</span> try {<a name="line.257"></a> +<span class="sourceLineNo">258</span> Thread.sleep(60000);<a name="line.258"></a> +<span class="sourceLineNo">259</span> } catch (InterruptedException ex) {<a name="line.259"></a> +<span class="sourceLineNo">260</span> LOG.debug("Interrupted while sleeping");<a name="line.260"></a> +<span class="sourceLineNo">261</span> }<a name="line.261"></a> +<span class="sourceLineNo">262</span> }<a name="line.262"></a> +<span class="sourceLineNo">263</span> } catch (Exception e) {<a name="line.263"></a> +<span class="sourceLineNo">264</span> closeCurrentConnection(key, e);<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> LOG.info(getName() + ": stopping");<a name="line.267"></a> +<span class="sourceLineNo">268</span> synchronized (this) {<a name="line.268"></a> +<span class="sourceLineNo">269</span> try {<a name="line.269"></a> +<span class="sourceLineNo">270</span> acceptChannel.close();<a name="line.270"></a> +<span class="sourceLineNo">271</span> selector.close();<a name="line.271"></a> +<span class="sourceLineNo">272</span> } catch (IOException ignored) {<a name="line.272"></a> +<span class="sourceLineNo">273</span> if (LOG.isTraceEnabled()) LOG.trace("ignored", ignored);<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> selector= null;<a name="line.276"></a> +<span class="sourceLineNo">277</span> acceptChannel= null;<a name="line.277"></a> +<span class="sourceLineNo">278</span><a name="line.278"></a> +<span class="sourceLineNo">279</span> // close all connections<a name="line.279"></a> +<span class="sourceLineNo">280</span> connectionManager.stopIdleScan();<a name="line.280"></a> +<span class="sourceLineNo">281</span> connectionManager.closeAll();<a name="line.281"></a> +<span class="sourceLineNo">282</span> }<a name="line.282"></a> +<span class="sourceLineNo">283</span> }<a name="line.283"></a> +<span class="sourceLineNo">284</span><a name="line.284"></a> +<span class="sourceLineNo">285</span> private void closeCurrentConnection(SelectionKey key, Throwable e) {<a name="line.285"></a> +<span class="sourceLineNo">286</span> if (key != null) {<a name="line.286"></a> +<span class="sourceLineNo">287</span> SimpleServerRpcConnection c = (SimpleServerRpcConnection)key.attachment();<a name="line.287"></a> +<span class="sourceLineNo">288</span> if (c != null) {<a name="line.288"></a> +<span class="sourceLineNo">289</span> closeConnection(c);<a name="line.289"></a> +<span class="sourceLineNo">290</span> key.attach(null);<a name="line.290"></a> +<span class="sourceLineNo">291</span> }<a name="line.291"></a> +<span class="sourceLineNo">292</span> }<a name="line.292"></a> +<span class="sourceLineNo">293</span> }<a name="line.293"></a> +<span class="sourceLineNo">294</span><a name="line.294"></a> +<span class="sourceLineNo">295</span> InetSocketAddress getAddress() {<a name="line.295"></a> +<span class="sourceLineNo">296</span> return address;<a name="line.296"></a> +<span class="sourceLineNo">297</span> }<a name="line.297"></a> +<span class="sourceLineNo">298</span><a name="line.298"></a> +<span class="sourceLineNo">299</span> void doAccept(SelectionKey key) throws InterruptedException, IOException, OutOfMemoryError {<a name="line.299"></a> +<span class="sourceLineNo">300</span> ServerSocketChannel server = (ServerSocketChannel) key.channel();<a name="line.300"></a> +<span class="sourceLineNo">301</span> SocketChannel channel;<a name="line.301"></a> +<span class="sourceLineNo">302</span> while ((channel = server.accept()) != null) {<a name="line.302"></a> +<span class="sourceLineNo">303</span> channel.configureBlocking(false);<a name="line.303"></a> +<span class="sourceLineNo">304</span> channel.socket().setTcpNoDelay(tcpNoDelay);<a name="line.304"></a> +<span class="sourceLineNo">305</span> channel.socket().setKeepAlive(tcpKeepAlive);<a name="line.305"></a> +<span class="sourceLineNo">306</span> Reader reader = getReader();<a name="line.306"></a> +<span class="sourceLineNo">307</span> SimpleServerRpcConnection c = connectionManager.register(channel);<a name="line.307"></a> +<span class="sourceLineNo">308</span> // If the connectionManager can't take it, close the connection.<a name="line.308"></a> +<span class="sourceLineNo">309</span> if (c == null) {<a name="line.309"></a> +<span class="sourceLineNo">310</span> if (channel.isOpen()) {<a name="line.310"></a> +<span class="sourceLineNo">311</span> IOUtils.cleanup(null, channel);<a name="line.311"></a> +<span class="sourceLineNo">312</span> }<a name="line.312"></a> +<span class="sourceLineNo">313</span> continue;<a name="line.313"></a> +<span class="sourceLineNo">314</span> }<a name="line.314"></a> +<span class="sourceLineNo">315</span> key.attach(c); // so closeCurrentConnection can get the object<a name="line.315"></a> +<span class="sourceLineNo">316</span> reader.addConnection(c);<a name="line.316"></a> +<span class="sourceLineNo">317</span> }<a name="line.317"></a> +<span class="sourceLineNo">318</span> }<a name="line.318"></a> +<span class="sourceLineNo">319</span><a name="line.319"></a> +<span class="sourceLineNo">320</span> void doRead(SelectionKey key) throws InterruptedException {<a name="line.320"></a> +<span class="sourceLineNo">321</span> int count;<a name="line.321"></a> +<span class="sourceLineNo">322</span> SimpleServerRpcConnection c = (SimpleServerRpcConnection) key.attachment();<a name="line.322"></a> +<span class="sourceLineNo">323</span> if (c == null) {<a name="line.323"></a> +<span class="sourceLineNo">324</span> return;<a name="line.324"></a> +<span class="sourceLineNo">325</span> }<a name="line.325"></a> +<span class="sourceLineNo">326</span> c.setLastContact(System.currentTimeMillis());<a name="line.326"></a> +<span class="sourceLineNo">327</span> try {<a name="line.327"></a> +<span class="sourceLineNo">328</span> count = c.readAndProcess();<a name="line.328"></a> +<span class="sourceLineNo">329</span> } catch (InterruptedException ieo) {<a name="line.329"></a> +<span class="sourceLineNo">330</span> LOG.info(Thread.currentThread().getName() + ": readAndProcess caught InterruptedException", ieo);<a name="line.330"></a> +<span class="sourceLineNo">331</span> throw ieo;<a name="line.331"></a> +<span class="sourceLineNo">332</span> } catch (Exception e) {<a name="line.332"></a> +<span class="sourceLineNo">333</span> if (LOG.isDebugEnabled()) {<a name="line.333"></a> +<span class="sourceLineNo">334</span> LOG.debug(getName() + ": Caught exception while reading:", e);<a name="line.334"></a> +<span class="sourceLineNo">335</span> }<a name="line.335"></a> +<span class="sourceLineNo">336</span> count = -1; //so that the (count < 0) block is executed<a name="line.336"></a> +<span class="sourceLineNo">337</span> }<a name="line.337"></a> +<span class="sourceLineNo">338</span> if (count < 0) {<a name="line.338"></a> +<span class="sourceLineNo">339</span> closeConnection(c);<a name="line.339"></a> +<span class="sourceLineNo">340</span> c = null;<a name="line.340"></a> +<span class="sourceLineNo">341</span> } else {<a name="line.341"></a> +<span class="sourceLineNo">342</span> c.setLastContact(System.currentTimeMillis());<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> synchronized void doStop() {<a name="line.346"></a> +<span class="sourceLineNo">347</span> if (selector != null) {<a name="line.347"></a> +<span class="sourceLineNo">348</span> selector.wakeup();<a name="line.348"></a> +<span class="sourceLineNo">349</span> Thread.yield();<a name="line.349"></a> +<span class="sourceLineNo">350</span> }<a name="line.350"></a> +<span class="sourceLineNo">351</span> if (acceptChannel != null) {<a name="line.351"></a> +<span class="sourceLineNo">352</span> try {<a name="line.352"></a> +<span class="sourceLineNo">353</span> acceptChannel.socket().close();<a name="line.353"></a> +<span class="sourceLineNo">354</span> } catch (IOException e) {<a name="line.354"></a> +<span class="sourceLineNo">355</span> LOG.info(getName() + ": exception in closing listener socket. " + e);<a name="line.355"></a> +<span class="sourceLineNo">356</span> }<a name="line.356"></a> +<span class="sourceLineNo">357</span> }<a name="line.357"></a> +<span class="sourceLineNo">358</span> readPool.shutdownNow();<a name="line.358"></a> +<span class="sourceLineNo">359</span> }<a name="line.359"></a> +<span class="sourceLineNo">360</span><a name="line.360"></a> +<span class="sourceLineNo">361</span> // The method that will return the next reader to work with<a name="line.361"></a> +<span class="sourceLineNo">362</span> // Simplistic implementation of round robin for now<a name="line.362"></a> +<span class="sourceLineNo">363</span> Reader getReader() {<a name="line.363"></a> +<span class="sourceLineNo">364</span> currentReader = (currentReader + 1) % readers.length;<a name="line.364"></a> +<span class="sourceLineNo">365</span> return readers[currentReader];<a name="line.365"></a> +<span class="sourceLineNo">366</span> }<a name="line.366"></a> +<span class="sourceLineNo">367</span> }<a name="line.367"></a> +<span class="sourceLineNo">368</span><a name="line.368"></a> +<span class="sourceLineNo">369</span> /**<a name="line.369"></a> +<span class="sourceLineNo">370</span> * Constructs a server listening on the named port and address.<a name="line.370"></a> +<span class="sourceLineNo">371</span> * @param server hosting instance of {@link Server}. We will do authentications if an<a name="line.371"></a> +<span class="sourceLineNo">372</span> * instance else pass null for no authentication check.<a name="line.372"></a> +<span class="sourceLineNo">373</span> * @param name Used keying this rpc servers' metrics and for naming the Listener thread.<a name="line.373"></a> +<span class="sourceLineNo">374</span> * @param services A list of services.<a name="line.374"></a> +<span class="sourceLineNo">375</span> * @param bindAddress Where to listen<a name="line.375"></a> +<span class="sourceLineNo">376</span> * @param conf<a name="line.376"></a> +<span class="sourceLineNo">377</span> * @param scheduler<a name="line.377"></a> +<span class="sourceLineNo">378</span> */<a name="line.378"></a> +<span class="sourceLineNo">379</span> public SimpleRpcServer(final Server server, final String name,<a name="line.379"></a> +<span class="sourceLineNo">380</span> final List<BlockingServiceAndInterface> services,<a name="line.380"></a> +<span class="sourceLineNo">381</span> final InetSocketAddress bindAddress, Configuration conf,<a name="line.381"></a> +<span class="sourceLineNo">382</span> RpcScheduler scheduler)<a name="line.382"></a> +<span class="sourceLineNo">383</span> throws IOException {<a name="line.383"></a> +<span class="sourceLineNo">384</span> super(server, name, services, bindAddress, conf, scheduler);<a name="line.384"></a> +<span class="sourceLineNo">385</span> this.socketSendBufferSize = 0;<a name="line.385"></a> +<span class="sourceLineNo">386</span> this.readThreads = conf.getInt("hbase.ipc.server.read.threadpool.size", 10);<a name="line.386"></a> +<span class="sourceLineNo">387</span> this.purgeTimeout = conf.getLong("hbase.ipc.client.call.purge.timeout",<a name="line.387"></a> +<span class="sourceLineNo">388</span> 2 * HConstants.DEFAULT_HBASE_RPC_TIMEOUT);<a name="line.388"></a> +<span class="sourceLineNo">389</span><a name="line.389"></a> +<span class="sourceLineNo">390</span> // Start the listener here and let it bind to the port<a name="line.390"></a> +<span class="sourceLineNo">391</span> listener = new Listener(name);<a name="line.391"></a> +<span class="sourceLineNo">392</span> this.port = listener.getAddress().getPort();<a name="line.392"></a> +<span class="sourceLineNo">393</span><a name="line.393"></a> +<span class="sourceLineNo">394</span> // Create the responder here<a name="line.394"></a> +<span class="sourceLineNo">395</span> responder = new SimpleRpcServerResponder(this);<a name="line.395"></a> +<span class="sourceLineNo">396</span> connectionManager = new ConnectionManager();<a name="line.396"></a> +<span class="sourceLineNo">397</span> initReconfigurable(conf);<a name="line.397"></a> <span class="sourceLineNo">398</span><a name="line.398"></a> -<span class="sourceLineNo">399</span> // Sends responses of RPC back to clients.<a name="line.399"></a> -<span class="sourceLineNo">400</span> protected class Responder extends Thread {<a name="line.400"></a> -<span class="sourceLineNo">401</span> private final Selector writeSelector;<a name="line.401"></a> -<span class="sourceLineNo">402</span> private final Set<Connection> writingCons =<a name="line.402"></a> -<span class="sourceLineNo">403</span> Collections.newSetFromMap(new ConcurrentHashMap<Connection, Boolean>());<a name="line.403"></a> -<span class="sourceLineNo">404</span><a name="line.404"></a> -<span class="sourceLineNo">405</span> Responder() throws IOException {<a name="line.405"></a> -<span class="sourceLineNo">406</span> this.setName("RpcServer.responder");<a name="line.406"></a> -<span class="sourceLineNo">407</span> this.setDaemon(true);<a name="line.407"></a> -<span class="sourceLineNo">408</span> this.setUncaughtExceptionHandler(Threads.LOGGING_EXCEPTION_HANDLER);<a name="line.408"></a> -<span class="sourceLineNo">409</span> writeSelector = Selector.open(); // create a selector<a name="line.409"></a> -<span class="sourceLineNo">410</span> }<a name="line.410"></a> -<span class="sourceLineNo">411</span><a name="line.411"></a> -<span class="sourceLineNo">412</span> @Override<a name="line.412"></a> -<span class="sourceLineNo">413</span> public void run() {<a name="line.413"></a> -<span class="sourceLineNo">414</span> LOG.debug(getName() + ": starting");<a name="line.414"></a> -<span class="sourceLineNo">415</span> try {<a name="line.415"></a> -<span class="sourceLineNo">416</span> doRunLoop();<a name="line.416"></a> -<span class="sourceLineNo">417</span> } finally {<a name="line.417"></a> -<span class="sourceLineNo">418</span> LOG.info(getName() + ": stopping");<a name="line.418"></a> -<span class="sourceLineNo">419</span> try {<a name="line.419"></a> -<span class="sourceLineNo">420</span> writeSelector.close();<a name="line.420"></a> -<span class="sourceLineNo">421</span> } catch (IOException ioe) {<a name="line.421"></a> -<span class="sourceLineNo">422</span> LOG.error(getName() + ": couldn't close write selector", ioe);<a name="line.422"></a> -<span class="sourceLineNo">423</span> }<a name="line.423"></a> -<span class="sourceLineNo">424</span> }<a name="line.424"></a> -<span class="sourceLineNo">425</span> }<a name="line.425"></a> -<span class="sourceLineNo">426</span><a name="line.426"></a> -<span class="sourceLineNo">427</span> /**<a name="line.427"></a> -<span class="sourceLineNo">428</span> * Take the list of the connections that want to write, and register them<a name="line.428"></a> -<span class="sourceLineNo">429</span> * in the selector.<a name="line.429"></a> -<span class="sourceLineNo">430</span> */<a name="line.430"></a> -<span class="sourceLineNo">431</span> private void registerWrites() {<a name="line.431"></a> -<span class="sourceLineNo">432</span> Iterator<Connection> it = writingCons.iterator();<a name="line.432"></a> -<span class="sourceLineNo">433</span> while (it.hasNext()) {<a name="line.433"></a> -<span class="sourceLineNo">434</span> Connection c = it.next();<a name="line.434"></a> -<span class="sourceLineNo">435</span> it.remove();<a name="line.435"></a> -<span class="sourceLineNo">436</span> SelectionKey sk = c.channel.keyFor(writeSelector);<a name="line.436"></a> -<span class="sourceLineNo">437</span> try {<a name="line.437"></a> -<span class="sourceLineNo">438</span> if (sk == null) {<a name="line.438"></a> -<span class="sourceLineNo">439</span> try {<a name="line.439"></a> -<span class="sourceLineNo">440</span> c.channel.register(writeSelector, SelectionKey.OP_WRITE, c);<a name="line.440"></a> -<span class="sourceLineNo">441</span> } catch (ClosedChannelException e) {<a name="line.441"></a> -<span class="sourceLineNo">442</span> // ignore: the client went away.<a name="line.442"></a> -<span class="sourceLineNo">443</span> if (LOG.isTraceEnabled()) LOG.trace("ignored", e);<a name="line.443"></a> -<span class="sourceLineNo">444</span> }<a name="line.444"></a> -<span class="sourceLineNo">445</span> } else {<a name="line.445"></a> -<span class="sourceLineNo">446</span> sk.interestOps(SelectionKey.OP_WRITE);<a name="line.446"></a> -<span class="sourceLineNo">447</span> }<a name="line.447"></a> -<span class="sourceLineNo">448</span> } catch (CancelledKeyException e) {<a name="line.448"></a> -<span class="sourceLineNo">449</span> // ignore: the client went away.<a name="line.449"></a> -<span class="sourceLineNo">450</span> if (LOG.isTraceEnabled()) LOG.trace("ignored", e);<a name="line.450"></a> -<span class="sourceLineNo">451</span> }<a name="line.451"></a> -<span class="sourceLineNo">452</span> }<a name="line.452"></a> -<span class="sourceLineNo">453</span> }<a name="line.453"></a> -<span class="sourceLineNo">454</span><a name="line.454"></a> -<span class="sourceLineNo">455</span> /**<a name="line.455"></a> -<span class="sourceLineNo">456</span> * Add a connection to the list that want to write,<a name="line.456"></a> -<span class="sourceLineNo">457</span> */<a name="line.457"></a> -<span class="sourceLineNo">458</span> public void registerForWrite(Connection c) {<a name="line.458"></a> -<span class="sourceLineNo">459</span> if (writingCons.add(c)) {<a name="line.459"></a> -<span class="sourceLineNo">460</span> writeSelector.wakeup();<a name="line.460"></a> -<span class="sourceLineNo">461</span> }<a name="line.461"></a> +<span class="sourceLineNo">399</span> this.scheduler.init(new RpcSchedulerContext(this));<a name="line.399"></a> +<span class="sourceLineNo">400</span> }<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> * Subclasses of HBaseServer can override this to provide their own<a name="line.403"></a> +<span class="sourceLineNo">404</span> * Connection implementations.<a name="line.404"></a> +<span class="sourceLineNo">405</span> */<a name="line.405"></a> +<span class="sourceLineNo">406</span> protected SimpleServerRpcConnection getConnection(SocketChannel channel, long time) {<a name="line.406"></a> +<span class="sourceLineNo">407</span> return new SimpleServerRpcConnection(this, channel, time);<a name="line.407"></a> +<span class="sourceLineNo">408</span> }<a name="line.408"></a> +<span class="sourceLineNo">409</span><a name="line.409"></a> +<span class="sourceLineNo">410</span> protected void closeConnection(SimpleServerRpcConnection connection) {<a name="line.410"></a> +<span class="sourceLineNo">411</span> connectionManager.close(connection);<a name="line.411"></a> +<span class="sourceLineNo">412</span> }<a name="line.412"></a> +<span class="sourceLineNo">413</span><a name="line.413"></a> +<span class="sourceLineNo">414</span> /** Sets the socket buffer size used for responding to RPCs.<a name="line.414"></a> +<span class="sourceLineNo">415</span> * @param size send size<a name="line.415"></a> +<span class="sourceLineNo">416</span> */<a name="line.416"></a> +<span class="sourceLineNo">417</span> @Override<a name="line.417"></a> +<span class="sourceLineNo">418</span> public void setSocketSendBufSize(int size) { this.socketSendBufferSize = size; }<a name="line.418"></a> +<span class="sourceLineNo">419</span><a name="line.419"></a> +<span class="sourceLineNo">420</span> /** Starts the service. Must be called before any calls will be handled. */<a name="line.420"></a> +<span class="sourceLineNo">421</span> @Override<a name="line.421"></a> +<span class="sourceLineNo">422</span> public synchronized void start() {<a name="line.422"></a> +<span class="sourceLineNo">423</span> if (started) return;<a name="line.423"></a> +<span class="sourceLineNo">424</span> authTokenSecretMgr = createSecretManager();<a name="line.424"></a> +<span class="sourceLineNo">425</span> if (authTokenSecretMgr != null) {<a name="line.425"></a> +<span class="sourceLineNo">426</span> setSecretManager(authTokenSecretMgr);<a name="line.426"></a> +<span class="sourceLineNo">427</span> authTokenSecretMgr.start();<a name="line.427"></a> +<span class="sourceLineNo">428</span> }<a name="line.428"></a> +<span class="sourceLineNo">429</span> this.authManager = new ServiceAuthorizationManager();<a name="line.429"></a> +<span class="sourceLineNo">430</span> HBasePolicyProvider.init(conf, authManager);<a name="line.430"></a> +<span class="sourceLineNo">431</span> responder.start();<a name="line.431"></a> +<span class="sourceLineNo">432</span> listener.start();<a name="line.432"></a> +<span class="sourceLineNo">433</span> scheduler.start();<a name="line.433"></a> +<span class="sourceLineNo">434</span> started = true;<a name="line.434"></a> +<span class="sourceLineNo">435</span> }<a name="line.435"></a> +<span class="sourceLineNo">436</span><a name="line.436"></a> +<span class="sourceLineNo">437</span> /** Stops the service. No new calls will be handled after this is called. */<a name="line.437"></a> +<span class="sourceLineNo">438</span> @Override<a name="line.438"></a> +<span class="sourceLineNo">439</span> public synchronized void stop() {<a name="line.439"></a> +<span class="sourceLineNo">440</span> LOG.info("Stopping server on " + port);<a name="line.440"></a> +<span class="sourceLineNo">441</span> running = false;<a name="line.441"></a> +<span class="sourceLineNo">442</span> if (authTokenSecretMgr != null) {<a name="line.442"></a> +<span class="sourceLineNo">443</span> authTokenSecretMgr.stop();<a name="line.443"></a> +<span class="sourceLineNo">444</span> authTokenSecretMgr = null;<a name="line.444"></a> +<span class="sourceLineNo">445</span> }<a name="line.445"></a> +<span class="sourceLineNo">446</span> listener.interrupt();<a name="line.446"></a> +<span class="sourceLineNo">447</span> listener.doStop();<a name="line.447"></a> +<span class="sourceLineNo">448</span> responder.interrupt();<a name="line.448"></a> +<span class="sourceLineNo">449</span> scheduler.stop();<a name="line.449"></a> +<span class="sourceLineNo">450</span> notifyAll();<a name="line.450"></a> +<span class="sourceLineNo">451</span> }<a name="line.451"></a> +<span class="sourceLineNo">452</span><a name="line.452"></a> +<span class="sourceLineNo">453</span> /** Wait for the server to be stopped.<a name="line.453"></a> +<span class="sourceLineNo">454</span> * Does not wait for all subthreads to finish.<a name="line.454"></a> +<span class="sourceLineNo">455</span> * See {@link #stop()}.<a name="line.455"></a> +<span class="sourceLineNo">456</span> * @throws InterruptedException e<a name="line.456"></a> +<span class="sourceLineNo">457</span> */<a name="line.457"></a> +<span class="sourceLineNo">458</span> @Override<a name="line.458"></a> +<span class="sourceLineNo">459</span> public synchronized void join() throws InterruptedException {<a name="line.459"></a> +<span class="sourceLineNo">460</span> while (running) {<a name="line.460"></a> +<span class="sourceLineNo">461</span> wait();<a name="line.461"></a> <span class="sourceLineNo">462</span> }<a name="line.462"></a> -<span class="sourceLineNo">463</span><a name="line.463"></a> -<span class="sourceLineNo">464</span> private void doRunLoop() {<a name="line.464"></a> -<span class="sourceLineNo">465</span> long lastPurgeTime = 0; // last check for old calls.<a name="line.465"></a> -<span class="sourceLineNo">466</span> while (running) {<a name="line.466"></a> -<span class="sourceLineNo">467</span> try {<a name="line.467"></a> -<span class="sourceLineNo">468</span> registerWrites();<a name="line.468"></a> -<span class="sourceLineNo">469</span> int keyCt = writeSelector.select(purgeTimeout);<a name="line.469"></a> -<span class="sourceLineNo">470</span> if (keyCt == 0) {<a name="line.470"></a> -<span class="sourceLineNo">471</span> continue;<a name="line.471"></a> -<span class="sourceLineNo">472</span> }<a name="line.472"></a> -<span class="sourceLineNo">473</span><a name="line.473"></a> -<span class="sourceLineNo">474</span> Set<SelectionKey> keys = writeSelector.selectedKeys();<a name="line.474"></a> -<span class="sourceLineNo">475</span> Iterator<SelectionKey> iter = keys.iterator();<a name="line.475"></a> -<span clas
<TRUNCATED>