From 2b8cab1e2478547398ad9c2fe68e025c180cac54 Mon Sep 17 00:00:00 2001
From: Max Romanov <max.romanov@nginx.com>
Date: Thu, 5 Sep 2019 15:27:32 +0300
Subject: Java: introducing websocket support.

---
 .../pojo/PojoMessageHandlerWholeBinary.java        | 131 +++++++++++++++++++++
 1 file changed, 131 insertions(+)
 create mode 100644 src/java/nginx/unit/websocket/pojo/PojoMessageHandlerWholeBinary.java

(limited to 'src/java/nginx/unit/websocket/pojo/PojoMessageHandlerWholeBinary.java')

diff --git a/src/java/nginx/unit/websocket/pojo/PojoMessageHandlerWholeBinary.java b/src/java/nginx/unit/websocket/pojo/PojoMessageHandlerWholeBinary.java
new file mode 100644
index 00000000..07ff0648
--- /dev/null
+++ b/src/java/nginx/unit/websocket/pojo/PojoMessageHandlerWholeBinary.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 nginx.unit.websocket.pojo;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.lang.reflect.Method;
+import java.nio.ByteBuffer;
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.websocket.DecodeException;
+import javax.websocket.Decoder;
+import javax.websocket.Decoder.Binary;
+import javax.websocket.Decoder.BinaryStream;
+import javax.websocket.EndpointConfig;
+import javax.websocket.Session;
+
+import org.apache.tomcat.util.res.StringManager;
+
+/**
+ * ByteBuffer specific concrete implementation for handling whole messages.
+ */
+public class PojoMessageHandlerWholeBinary
+        extends PojoMessageHandlerWholeBase<ByteBuffer> {
+
+    private static final StringManager sm =
+            StringManager.getManager(PojoMessageHandlerWholeBinary.class);
+
+    private final List<Decoder> decoders = new ArrayList<>();
+
+    private final boolean isForInputStream;
+
+    public PojoMessageHandlerWholeBinary(Object pojo, Method method,
+            Session session, EndpointConfig config,
+            List<Class<? extends Decoder>> decoderClazzes, Object[] params,
+            int indexPayload, boolean convert, int indexSession,
+            boolean isForInputStream, long maxMessageSize) {
+        super(pojo, method, session, params, indexPayload, convert,
+                indexSession, maxMessageSize);
+
+        // Update binary text size handled by session
+        if (maxMessageSize > -1 && maxMessageSize > session.getMaxBinaryMessageBufferSize()) {
+            if (maxMessageSize > Integer.MAX_VALUE) {
+                throw new IllegalArgumentException(sm.getString(
+                        "pojoMessageHandlerWhole.maxBufferSize"));
+            }
+            session.setMaxBinaryMessageBufferSize((int) maxMessageSize);
+        }
+
+        try {
+            if (decoderClazzes != null) {
+                for (Class<? extends Decoder> decoderClazz : decoderClazzes) {
+                    if (Binary.class.isAssignableFrom(decoderClazz)) {
+                        Binary<?> decoder = (Binary<?>) decoderClazz.getConstructor().newInstance();
+                        decoder.init(config);
+                        decoders.add(decoder);
+                    } else if (BinaryStream.class.isAssignableFrom(
+                            decoderClazz)) {
+                        BinaryStream<?> decoder = (BinaryStream<?>)
+                                decoderClazz.getConstructor().newInstance();
+                        decoder.init(config);
+                        decoders.add(decoder);
+                    } else {
+                        // Text decoder - ignore it
+                    }
+                }
+            }
+        } catch (ReflectiveOperationException e) {
+            throw new IllegalArgumentException(e);
+        }
+        this.isForInputStream = isForInputStream;
+    }
+
+
+    @Override
+    protected Object decode(ByteBuffer message) throws DecodeException {
+        for (Decoder decoder : decoders) {
+            if (decoder instanceof Binary) {
+                if (((Binary<?>) decoder).willDecode(message)) {
+                    return ((Binary<?>) decoder).decode(message);
+                }
+            } else {
+                byte[] array = new byte[message.limit() - message.position()];
+                message.get(array);
+                ByteArrayInputStream bais = new ByteArrayInputStream(array);
+                try {
+                    return ((BinaryStream<?>) decoder).decode(bais);
+                } catch (IOException ioe) {
+                    throw new DecodeException(message, sm.getString(
+                            "pojoMessageHandlerWhole.decodeIoFail"), ioe);
+                }
+            }
+        }
+        return null;
+    }
+
+
+    @Override
+    protected Object convert(ByteBuffer message) {
+        byte[] array = new byte[message.remaining()];
+        message.get(array);
+        if (isForInputStream) {
+            return new ByteArrayInputStream(array);
+        } else {
+            return array;
+        }
+    }
+
+
+    @Override
+    protected void onClose() {
+        for (Decoder decoder : decoders) {
+            decoder.destroy();
+        }
+    }
+}
-- 
cgit