pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / src / java / org / apache / lucene / store / LockVerifyServer.java

diff --git a/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/store/LockVerifyServer.java b/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/store/LockVerifyServer.java
new file mode 100644 (file)
index 0000000..acd0259
--- /dev/null
+++ b/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/store/LockVerifyServer.java
@@ -0,0 +1,96 @@
+package org.apache.lucene.store;
+
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import java.net.ServerSocket;
+import java.net.Socket;
+import java.io.OutputStream;
+import java.io.InputStream;
+import java.io.IOException;
+
+/**
+ * Simple standalone server that must be running when you
+ * use {@link VerifyingLockFactory}.  This server simply
+ * verifies at most one process holds the lock at a time.
+ * Run without any args to see usage.
+ *
+ * @see VerifyingLockFactory
+ * @see LockStressTest
+ */
+
+public class LockVerifyServer {
+
+  private static String getTime(long startTime) {
+    return "[" + ((System.currentTimeMillis()-startTime)/1000) + "s] ";
+  }
+
+  public static void main(String[] args) throws IOException {
+
+    if (args.length != 1) {
+      System.out.println("\nUsage: java org.apache.lucene.store.LockVerifyServer port\n");
+      System.exit(1);
+    }
+
+    final int port = Integer.parseInt(args[0]);
+
+    ServerSocket s = new ServerSocket(port);
+    s.setReuseAddress(true);
+    System.out.println("\nReady on port " + port + "...");
+
+    int lockedID = 0;
+    long startTime = System.currentTimeMillis();
+
+    while(true) {
+      Socket cs = s.accept();
+      OutputStream out = cs.getOutputStream();
+      InputStream in = cs.getInputStream();
+
+      int id = in.read();
+      int command = in.read();
+
+      boolean err = false;
+
+      if (command == 1) {
+        // Locked
+        if (lockedID != 0) {
+          err = true;
+          System.out.println(getTime(startTime) + " ERROR: id " + id + " got lock, but " + lockedID + " already holds the lock");
+        }
+        lockedID = id;
+      } else if (command == 0) {
+        if (lockedID != id) {
+          err = true;
+          System.out.println(getTime(startTime) + " ERROR: id " + id + " released the lock, but " + lockedID + " is the one holding the lock");
+        }
+        lockedID = 0;
+      } else
+        throw new RuntimeException("unrecognized command " + command);
+
+      System.out.print(".");
+
+      if (err)
+        out.write(1);
+      else
+        out.write(0);
+
+      out.close();
+      in.close();
+      cs.close();
+    }
+  }
+}