http://git-wip-us.apache.org/repos/asf/hbase-site/blob/f55ebeaa/devapidocs/src-html/org/apache/hadoop/hbase/ipc/SimpleRpcServer.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/ipc/SimpleRpcServer.html b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/SimpleRpcServer.html index 7f61b54..35e8890 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/ipc/SimpleRpcServer.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/SimpleRpcServer.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 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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> 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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 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+<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 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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> 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<TRUNCATED>
