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From ol...@apache.org
Subject svn commit: r1366853 - in /cxf/sandbox/dkulp_async_clients/http-hc/src/main/java/org/apache/cxf/transport/http/asyncclient: SharedInputBuffer.java SharedOutputBuffer.java
Date Sun, 29 Jul 2012 14:25:46 GMT
Author: olegk
Date: Sun Jul 29 14:25:45 2012
New Revision: 1366853

URL: http://svn.apache.org/viewvc?rev=1366853&view=rev
Log:
Added shared i/o buffer classes (copied from HC core with some minor changes)

Added:
    cxf/sandbox/dkulp_async_clients/http-hc/src/main/java/org/apache/cxf/transport/http/asyncclient/SharedInputBuffer.java
  (with props)
    cxf/sandbox/dkulp_async_clients/http-hc/src/main/java/org/apache/cxf/transport/http/asyncclient/SharedOutputBuffer.java
  (with props)

Added: cxf/sandbox/dkulp_async_clients/http-hc/src/main/java/org/apache/cxf/transport/http/asyncclient/SharedInputBuffer.java
URL: http://svn.apache.org/viewvc/cxf/sandbox/dkulp_async_clients/http-hc/src/main/java/org/apache/cxf/transport/http/asyncclient/SharedInputBuffer.java?rev=1366853&view=auto
==============================================================================
--- cxf/sandbox/dkulp_async_clients/http-hc/src/main/java/org/apache/cxf/transport/http/asyncclient/SharedInputBuffer.java
(added)
+++ cxf/sandbox/dkulp_async_clients/http-hc/src/main/java/org/apache/cxf/transport/http/asyncclient/SharedInputBuffer.java
Sun Jul 29 14:25:45 2012
@@ -0,0 +1,268 @@
+/**
+ * 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.cxf.transport.http.asyncclient;
+
+import java.io.IOException;
+import java.io.InterruptedIOException;
+import java.util.concurrent.locks.Condition;
+import java.util.concurrent.locks.ReentrantLock;
+
+import org.apache.http.annotation.ThreadSafe;
+import org.apache.http.nio.ContentDecoder;
+import org.apache.http.nio.IOControl;
+import org.apache.http.nio.util.ByteBufferAllocator;
+import org.apache.http.nio.util.ExpandableBuffer;
+
+/**
+ * Content buffer that can be shared by multiple threads, usually the I/O dispatch of 
+ * an I/O reactor and a worker thread.
+ * <p/>
+ * The I/O dispatch thread is expect to transfer data from {@link ContentDecoder} to the
buffer
+ *   by calling {@link #consumeContent(ContentDecoder)}.
+ * <p/>
+ * The worker thread is expected to read the data from the buffer by calling
+ *   {@link #read()} or {@link #read(byte[], int, int)} methods.
+ * <p/>
+ * In case of an abnormal situation or when no longer needed the buffer must be shut down
+ * using {@link #shutdown()} method.
+ */
+@ThreadSafe
+public class SharedInputBuffer extends ExpandableBuffer {
+
+    private final ReentrantLock lock;
+    private final Condition condition;
+
+    private volatile IOControl ioctrl;
+    private volatile boolean shutdown;
+    private volatile boolean endOfStream;
+
+    public SharedInputBuffer(int buffersize, final ByteBufferAllocator allocator) {
+        super(buffersize, allocator);
+        this.lock = new ReentrantLock();
+        this.condition = this.lock.newCondition();
+    }
+
+    public void reset() {
+        if (this.shutdown) {
+            return;
+        }
+        this.lock.lock();
+        try {
+            clear();
+            this.endOfStream = false;
+        } finally {
+            this.lock.unlock();
+        }
+    }
+
+    public int consumeContent(final ContentDecoder decoder) throws IOException {
+        if (this.shutdown) {
+            return -1;
+        }
+        this.lock.lock();
+        try {
+            setInputMode();
+            int totalRead = 0;
+            int bytesRead;
+            while ((bytesRead = decoder.read(this.buffer)) > 0) {
+                totalRead += bytesRead;
+            }
+            if (bytesRead == -1 || decoder.isCompleted()) {
+                this.endOfStream = true;
+            }
+            if (!this.buffer.hasRemaining() && this.ioctrl != null) {
+                this.ioctrl.suspendInput();
+            }
+            this.condition.signalAll();
+
+            if (totalRead > 0) {
+                return totalRead;
+            } else {
+                if (this.endOfStream) {
+                    return -1;
+                } else {
+                    return 0;
+                }
+            }
+        } finally {
+            this.lock.unlock();
+        }
+    }
+
+    public void setIOControl(final IOControl ioc) {
+        this.lock.lock();
+        try {
+            this.ioctrl = ioc;
+        } finally {
+            this.lock.unlock();
+        }
+    }
+
+    @Override
+    public boolean hasData() {
+        this.lock.lock();
+        try {
+            return super.hasData();
+        } finally {
+            this.lock.unlock();
+        }
+    }
+
+    @Override
+    public int available() {
+        this.lock.lock();
+        try {
+            return super.available();
+        } finally {
+            this.lock.unlock();
+        }
+    }
+
+    @Override
+    public int capacity() {
+        this.lock.lock();
+        try {
+            return super.capacity();
+        } finally {
+            this.lock.unlock();
+        }
+    }
+
+    @Override
+    public int length() {
+        this.lock.lock();
+        try {
+            return super.length();
+        } finally {
+            this.lock.unlock();
+        }
+    }
+
+    protected void waitForData() throws IOException {
+        this.lock.lock();
+        try {
+            try {
+                while (!super.hasData() && !this.endOfStream) {
+                    if (this.shutdown) {
+                        throw new InterruptedIOException("Input operation aborted");
+                    }
+                    if (this.ioctrl != null) {
+                        this.ioctrl.requestInput();
+                    }
+                    this.condition.await();
+                }
+            } catch (InterruptedException ex) {
+                throw new IOException("Interrupted while waiting for more data");
+            }
+        } finally {
+            this.lock.unlock();
+        }
+    }
+
+    public void close() {
+        if (this.shutdown) {
+            return;
+        }
+        this.endOfStream = true;
+        this.lock.lock();
+        try {
+            this.condition.signalAll();
+        } finally {
+            this.lock.unlock();
+        }
+    }
+
+    public void shutdown() {
+        if (this.shutdown) {
+            return;
+        }
+        this.shutdown = true;
+        this.lock.lock();
+        try {
+            this.condition.signalAll();
+        } finally {
+            this.lock.unlock();
+        }
+    }
+
+    protected boolean isShutdown() {
+        return this.shutdown;
+    }
+
+    protected boolean isEndOfStream() {
+        return this.shutdown || (!hasData() && this.endOfStream);
+    }
+
+    public int read() throws IOException {
+        if (this.shutdown) {
+            return -1;
+        }
+        this.lock.lock();
+        try {
+            if (!hasData()) {
+                waitForData();
+            }
+            if (isEndOfStream()) {
+                return -1;
+            }
+            return this.buffer.get() & 0xff;
+        } finally {
+            this.lock.unlock();
+        }
+    }
+
+    public int read(final byte[] b, int off, int len) throws IOException {
+        if (this.shutdown) {
+            return -1;
+        }
+        if (b == null) {
+            return 0;
+        }
+        this.lock.lock();
+        try {
+            if (!hasData()) {
+                waitForData();
+            }
+            if (isEndOfStream()) {
+                return -1;
+            }
+            setOutputMode();
+            int chunk = len;
+            if (chunk > this.buffer.remaining()) {
+                chunk = this.buffer.remaining();
+            }
+            this.buffer.get(b, off, chunk);
+            return chunk;
+        } finally {
+            this.lock.unlock();
+        }
+    }
+
+    public int read(final byte[] b) throws IOException {
+        if (this.shutdown) {
+            return -1;
+        }
+        if (b == null) {
+            return 0;
+        }
+        return read(b, 0, b.length);
+    }
+
+}

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Propchange: cxf/sandbox/dkulp_async_clients/http-hc/src/main/java/org/apache/cxf/transport/http/asyncclient/SharedInputBuffer.java
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    svn:keywords = Date Revision

Propchange: cxf/sandbox/dkulp_async_clients/http-hc/src/main/java/org/apache/cxf/transport/http/asyncclient/SharedInputBuffer.java
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Added: cxf/sandbox/dkulp_async_clients/http-hc/src/main/java/org/apache/cxf/transport/http/asyncclient/SharedOutputBuffer.java
URL: http://svn.apache.org/viewvc/cxf/sandbox/dkulp_async_clients/http-hc/src/main/java/org/apache/cxf/transport/http/asyncclient/SharedOutputBuffer.java?rev=1366853&view=auto
==============================================================================
--- cxf/sandbox/dkulp_async_clients/http-hc/src/main/java/org/apache/cxf/transport/http/asyncclient/SharedOutputBuffer.java
(added)
+++ cxf/sandbox/dkulp_async_clients/http-hc/src/main/java/org/apache/cxf/transport/http/asyncclient/SharedOutputBuffer.java
Sun Jul 29 14:25:45 2012
@@ -0,0 +1,262 @@
+/**
+ * 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.cxf.transport.http.asyncclient;
+
+import java.io.IOException;
+import java.io.InterruptedIOException;
+import java.util.concurrent.locks.Condition;
+import java.util.concurrent.locks.ReentrantLock;
+
+import org.apache.http.annotation.ThreadSafe;
+import org.apache.http.nio.ContentEncoder;
+import org.apache.http.nio.IOControl;
+import org.apache.http.nio.util.ByteBufferAllocator;
+import org.apache.http.nio.util.ExpandableBuffer;
+
+/**
+ * Content buffer that can be shared by multiple threads, usually the I/O dispatch of 
+ * an I/O reactor and a worker thread.
+ * <p/>
+ * The I/O dispatch thread is expected to transfer data from the buffer to
+ *   {@link ContentEncoder} by calling {@link #produceContent(ContentEncoder)}.
+ * <p/>
+ * The worker thread is expected to write data to the buffer by calling
+ * {@link #write(int)}, {@link #write(byte[], int, int)} or {@link #writeCompleted()}
+ * <p/>
+ * In case of an abnormal situation or when no longer needed the buffer must be
+ * shut down using {@link #shutdown()} method.
+ */
+@ThreadSafe
+public class SharedOutputBuffer extends ExpandableBuffer {
+
+    private final ReentrantLock lock;
+    private final Condition condition;
+
+    private volatile IOControl ioctrl;
+    private volatile boolean shutdown;
+    private volatile boolean endOfStream;
+
+    public SharedOutputBuffer(int buffersize, final ByteBufferAllocator allocator) {
+        super(buffersize, allocator);
+        this.lock = new ReentrantLock();
+        this.condition = this.lock.newCondition();
+    }
+
+    public void reset() {
+        if (this.shutdown) {
+            return;
+        }
+        this.lock.lock();
+        try {
+            clear();
+            this.endOfStream = false;
+        } finally {
+            this.lock.unlock();
+        }
+    }
+
+    @Override
+    public boolean hasData() {
+        this.lock.lock();
+        try {
+            return super.hasData();
+        } finally {
+            this.lock.unlock();
+        }
+    }
+
+    @Override
+    public int available() {
+        this.lock.lock();
+        try {
+            return super.available();
+        } finally {
+            this.lock.unlock();
+        }
+    }
+
+    @Override
+    public int capacity() {
+        this.lock.lock();
+        try {
+            return super.capacity();
+        } finally {
+            this.lock.unlock();
+        }
+    }
+
+    @Override
+    public int length() {
+        this.lock.lock();
+        try {
+            return super.length();
+        } finally {
+            this.lock.unlock();
+        }
+    }
+
+    public void setIOControl(final IOControl ioc) {
+        this.lock.lock();
+        try {
+            this.ioctrl = ioc;
+        } finally {
+            this.lock.unlock();
+        }
+    }
+
+    public int produceContent(final ContentEncoder encoder) throws IOException {
+        if (this.shutdown) {
+            return -1;
+        }
+        this.lock.lock();
+        try {
+            setOutputMode();
+            int bytesWritten = 0;
+            if (super.hasData()) {
+                bytesWritten = encoder.write(this.buffer);
+                if (encoder.isCompleted()) {
+                    this.endOfStream = true;
+                }
+            }
+            if (!super.hasData()) {
+                // No more buffered content
+                // If at the end of the stream, terminate
+                if (this.endOfStream && !encoder.isCompleted()) {
+                    encoder.complete();
+                }
+                if (!this.endOfStream && this.ioctrl != null) {
+                    // suspend output events
+                    this.ioctrl.suspendOutput();
+                }
+            }
+            this.condition.signalAll();
+            return bytesWritten;
+        } finally {
+            this.lock.unlock();
+        }
+    }
+
+    public void close() {
+        shutdown();
+    }
+
+    public void shutdown() {
+        if (this.shutdown) {
+            return;
+        }
+        this.shutdown = true;
+        this.lock.lock();
+        try {
+            this.condition.signalAll();
+        } finally {
+            this.lock.unlock();
+        }
+    }
+
+    public void write(final byte[] b, int off, int len) throws IOException {
+        if (b == null) {
+            return;
+        }
+        this.lock.lock();
+        try {
+            if (this.shutdown || this.endOfStream) {
+                throw new IllegalStateException("Buffer already closed for writing");
+            }
+            setInputMode();
+            int remaining = len;
+            while (remaining > 0) {
+                if (!this.buffer.hasRemaining()) {
+                    flushContent();
+                    setInputMode();
+                }
+                int chunk = Math.min(remaining, this.buffer.remaining());
+                this.buffer.put(b, off, chunk);
+                remaining -= chunk;
+                off += chunk;
+            }
+        } finally {
+            this.lock.unlock();
+        }
+    }
+
+    public void write(final byte[] b) throws IOException {
+        if (b == null) {
+            return;
+        }
+        write(b, 0, b.length);
+    }
+
+    public void write(int b) throws IOException {
+        this.lock.lock();
+        try {
+            if (this.shutdown || this.endOfStream) {
+                throw new IllegalStateException("Buffer already closed for writing");
+            }
+            setInputMode();
+            if (!this.buffer.hasRemaining()) {
+                flushContent();
+                setInputMode();
+            }
+            this.buffer.put((byte)b);
+        } finally {
+            this.lock.unlock();
+        }
+    }
+
+    public void flush() throws IOException {
+    }
+
+    private void flushContent() throws IOException {
+        this.lock.lock();
+        try {
+            try {
+                while (super.hasData()) {
+                    if (this.shutdown) {
+                        throw new InterruptedIOException("Output operation aborted");
+                    }
+                    if (this.ioctrl != null) {
+                        this.ioctrl.requestOutput();
+                    }
+                    this.condition.await();
+                }
+            } catch (InterruptedException ex) {
+                throw new IOException("Interrupted while flushing the content buffer");
+            }
+        } finally {
+            this.lock.unlock();
+        }
+    }
+
+    public void writeCompleted() throws IOException {
+        this.lock.lock();
+        try {
+            if (this.endOfStream) {
+                return;
+            }
+            this.endOfStream = true;
+            if (this.ioctrl != null) {
+                this.ioctrl.requestOutput();
+            }
+        } finally {
+            this.lock.unlock();
+        }
+    }
+
+}

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    svn:keywords = Date Revision

Propchange: cxf/sandbox/dkulp_async_clients/http-hc/src/main/java/org/apache/cxf/transport/http/asyncclient/SharedOutputBuffer.java
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