diff options
Diffstat (limited to 'java/broker/src/main/java/org/apache/qpid/qmf/QMFCommandDecoder.java')
-rw-r--r-- | java/broker/src/main/java/org/apache/qpid/qmf/QMFCommandDecoder.java | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/java/broker/src/main/java/org/apache/qpid/qmf/QMFCommandDecoder.java b/java/broker/src/main/java/org/apache/qpid/qmf/QMFCommandDecoder.java new file mode 100644 index 0000000000..ac036dfa19 --- /dev/null +++ b/java/broker/src/main/java/org/apache/qpid/qmf/QMFCommandDecoder.java @@ -0,0 +1,98 @@ +/* + * + * 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.qpid.qmf; + +import org.apache.qpid.transport.codec.BBDecoder; + +import java.nio.ByteBuffer; + +public class QMFCommandDecoder +{ + private BBDecoder _decoder; + + + private static final QMFOperation[] OP_CODES = new QMFOperation[256]; + private final QMFService _qmfService; + + static + { + for(QMFOperation op : QMFOperation.values()) + { + OP_CODES[op.getOpcode()] = op; + } + } + + public QMFCommandDecoder(final QMFService qmfService, ByteBuffer buf) + { + _qmfService = qmfService; + _decoder = new BBDecoder(); + _decoder.init(buf); + } + + public QMFCommand decode() + { + if(_decoder.hasRemaining()) + { + QMFCommandHeader header = readQMFHeader(); + + switch(header.getOperation()) + { + case BROKER_REQUEST: + return new QMFBrokerRequestCommand(header, _decoder); + case PACKAGE_QUERY: + return new QMFPackageQueryCommand(header, _decoder); + case CLASS_QUERY: + return new QMFClassQueryCommand(header, _decoder); + case SCHEMA_REQUEST: + return new QMFSchemaRequestCommand(header, _decoder); + case METHOD_REQUEST: + return new QMFMethodRequestCommand(header, _decoder, _qmfService); + case GET_QUERY: + return new QMFGetQueryCommand(header, _decoder); + default: + System.out.println("Unknown command"); + + } + + return null; + } + else + { + return null; + } + } + + private QMFCommandHeader readQMFHeader() + { + if(_decoder.readInt8() == (byte) 'A' + && _decoder.readInt8() == (byte) 'M') + { + byte version = _decoder.readInt8(); + short opCode = _decoder.readUint8(); + int seq = _decoder.readInt32(); + + return new QMFCommandHeader(version, seq, OP_CODES[opCode]); + + } + return null; + } +} |