1 files changed, 131 insertions, 0 deletions
diff --git a/sandbox/old/contrib/runtime-standalone/smoketest/src/test/java/org/apache/tuscany/sca/runtime/standalone/smoketest/ProcessDrainer.java b/sandbox/old/contrib/runtime-standalone/smoketest/src/test/java/org/apache/tuscany/sca/runtime/standalone/smoketest/ProcessDrainer.java
new file mode 100644
index 0000000000..31e697bb23
--- /dev/null
+++ b/sandbox/old/contrib/runtime-standalone/smoketest/src/test/java/org/apache/tuscany/sca/runtime/standalone/smoketest/ProcessDrainer.java
@@ -0,0 +1,131 @@
+/*
+ * 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.    
+ */
+package org.apache.tuscany.sca.runtime.standalone.smoketest;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * Stream drainer used for draining the out and err streams of an external 
+ * process to avoid buffer overflow and deadlock.
+ * 
+ * @version $Revision$ $Date$
+ *
+ */
+public class ProcessDrainer {
+    
+    // Default time out in seconds
+    private static final int DEFAULT_TIMEOUT = 60;
+    
+    // Process whose streams are being drained
+    private Process process;
+    
+    // Timeout to wait for the extrenal process to whutdown
+    private int timeout = DEFAULT_TIMEOUT;
+    
+    // Executor that is scheduling the draining
+    private ExecutorService executor = Executors.newFixedThreadPool(2);
+    
+    /*
+     * Initializes the process to drained.
+     */
+    private ProcessDrainer(Process process) {
+        this.process = process;
+    }
+    
+    /*
+     * Initializes the process to drained.
+     */
+    private ProcessDrainer(Process process, int timeout) {
+        this.process = process;
+        this.timeout = timeout;
+    }
+    
+    /**
+     * Creates a new instance of the stream drainer for the processed.
+     * @param process Process to be drained.
+     * @return An instance of the stream drainer.
+     */
+    public static ProcessDrainer newInstance(Process process) {
+        return new ProcessDrainer(process);
+    }
+    
+    /**
+     * Creates a new instance of the stream drainer for the processed.
+     * @param process Process to be drained.
+     * @param timeout Timeout before which teh drainer stops.
+     * @return An instance of the stream drainer.
+     */
+    public static ProcessDrainer newInstance(Process process, int timeout) {
+        return new ProcessDrainer(process, timeout);
+    }
+    
+    /**
+     * Starts draining the stream.
+     */
+    public void drain() {
+        
+        executor.execute(new StreamDrainer(process.getErrorStream()));
+        executor.execute(new StreamDrainer(process.getInputStream()));
+        
+        executor.shutdown();
+        try {
+            executor.awaitTermination(timeout, TimeUnit.SECONDS);
+        } catch (InterruptedException ex) {
+            return;
+        }
+        
+    }
+    
+    /*
+     * Scheduled stream drainer.
+     */
+    private class StreamDrainer implements Runnable {
+        
+        // Stream to be drained
+        private final InputStream inputStream;
+        
+        /*
+         * Initializes the stream to drained.
+         */
+        private StreamDrainer(InputStream inputStream) {
+            this.inputStream = inputStream;
+        }
+        
+        /*
+         * Starts draing the stream.
+         */
+        public void run() {
+            try {
+                int count = 0;
+                byte[] buffer = new byte[4096];
+                count = inputStream.read(buffer);
+                while (count != -1) {
+                    count = inputStream.read(buffer);
+                }
+            } catch (IOException ex) {
+            }
+        }
+        
+    }
+
+}