activemq-protobuf/src/main/java/org/apache/activemq/protobuf/BaseMessage.java - activemq-protobuf - Git at Google

 /**
  * 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.activemq.protobuf;

 import static org.apache.activemq.protobuf.WireInfo.WIRETYPE_END_GROUP;
 import static org.apache.activemq.protobuf.WireInfo.WIRETYPE_LENGTH_DELIMITED;
 import static org.apache.activemq.protobuf.WireInfo.WIRETYPE_START_GROUP;
 import static org.apache.activemq.protobuf.WireInfo.makeTag;

 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;

 import com.google.protobuf.ByteString;
 import com.google.protobuf.CodedInputStream;
 import com.google.protobuf.CodedOutputStream;
 import com.google.protobuf.InvalidProtocolBufferException;

 abstract public class BaseMessage<T> implements Message<T> {

     protected int memoizedSerializedSize = -1;

     abstract public T clone() throws CloneNotSupportedException;

     ///////////////////////////////////////////////////////////////////
     // Write related helpers.
     ///////////////////////////////////////////////////////////////////

     public void writeFramed(CodedOutputStream output) throws IOException {
         output.writeRawVarint32(serializedSizeUnframed());
         writeUnframed(output);
     }

     public byte[] toUnframedByteArray() {
         try {
             byte[] result = new byte[serializedSizeUnframed()];
             CodedOutputStream output = CodedOutputStream.newInstance(result);
             writeUnframed(output);
             output.checkNoSpaceLeft();
             return result;
         } catch (IOException e) {
             throw new RuntimeException("Serializing to a byte array threw an IOException " + "(should never happen).", e);
         }
     }


 	public byte[] toFramedByteArray() {
         try {
             byte[] result = new byte[serializedSizeFramed()];
             CodedOutputStream output = CodedOutputStream.newInstance(result);
             writeFramed(output);
             output.checkNoSpaceLeft();
             return result;
         } catch (IOException e) {
             throw new RuntimeException("Serializing to a byte array threw an IOException " + "(should never happen).", e);
         }
 	}

 	public void writeFramed(OutputStream output) throws IOException {
         CodedOutputStream codedOutput = CodedOutputStream.newInstance(output);
         writeFramed(codedOutput);
         codedOutput.flush();
 	}

     public void writeUnframed(OutputStream output) throws IOException {
         CodedOutputStream codedOutput = CodedOutputStream.newInstance(output);
         writeUnframed(codedOutput);
         codedOutput.flush();
     }

     public int serializedSizeFramed() {
         int t = serializedSizeUnframed();
         return CodedOutputStream.computeRawVarint32Size(t) + t;

     }

     ///////////////////////////////////////////////////////////////////
     // Read related helpers.
     ///////////////////////////////////////////////////////////////////

     public T mergeFramed(CodedInputStream input) throws IOException {
         int length = input.readRawVarint32();
         int oldLimit = input.pushLimit(length);
         T rc=  mergeUnframed(input);
         input.checkLastTagWas(0);
         input.popLimit(oldLimit);
         return rc;
     }

     public T mergeUnframed(ByteString data) throws InvalidProtocolBufferException {
         try {
             CodedInputStream input = data.newCodedInput();
             mergeUnframed(input);
             input.checkLastTagWas(0);
             return (T)this;
         } catch (InvalidProtocolBufferException e) {
             throw e;
         } catch (IOException e) {
             throw new RuntimeException("Reading from a ByteString threw an IOException (should " + "never happen).", e);
         }
     }

     public T mergeFramed(ByteString data) throws InvalidProtocolBufferException {
         try {
             CodedInputStream input = data.newCodedInput();
             mergeFramed(input);
             input.checkLastTagWas(0);
             return (T)this;
         } catch (InvalidProtocolBufferException e) {
             throw e;
         } catch (IOException e) {
             throw new RuntimeException("Reading from a ByteString threw an IOException (should " + "never happen).", e);
         }
     }

     public T mergeUnframed(byte[] data) throws InvalidProtocolBufferException {
         try {
             CodedInputStream input = CodedInputStream.newInstance(data);
             mergeUnframed(input);
             input.checkLastTagWas(0);
             return (T)this;
         } catch (InvalidProtocolBufferException e) {
             throw e;
         } catch (IOException e) {
             throw new RuntimeException("Reading from a byte array threw an IOException (should " + "never happen).", e);
         }
     }

     public T mergeFramed(byte[] data) throws InvalidProtocolBufferException {
         try {
             CodedInputStream input = CodedInputStream.newInstance(data);
             mergeFramed(input);
             input.checkLastTagWas(0);
             return (T)this;
         } catch (InvalidProtocolBufferException e) {
             throw e;
         } catch (IOException e) {
             throw new RuntimeException("Reading from a byte array threw an IOException (should " + "never happen).", e);
         }
     }

     public T mergeUnframed(InputStream input) throws IOException {
         CodedInputStream codedInput = CodedInputStream.newInstance(input);
         mergeUnframed(codedInput);
         return (T)this;
     }

     public T mergeFramed(InputStream input) throws IOException {
 		int length = readRawVarint32(input);
 		byte []data = new byte[length];
 		int pos = 0;
 		while( pos < length ) {
 			int r = input.read(data, pos, length-pos);
 			if( r < 0 ) {
 				throw new InvalidProtocolBufferException("Input stream ended before a full message frame could be read.");
 			}
 			pos+=r;
 		}
 		return mergeUnframed(data);
     }

     ///////////////////////////////////////////////////////////////////
     // Internal implementation methods.
     ///////////////////////////////////////////////////////////////////
     static protected <T> void addAll(Iterable<T> values, Collection<? super T> list) {
         if (values instanceof Collection) {
             @SuppressWarnings("unsafe")
             Collection<T> collection = (Collection<T>)values;
             list.addAll(collection);
         } else {
             for (T value : values) {
                 list.add(value);
             }
         }
     }

     static protected void writeGroup(CodedOutputStream output, int tag, BaseMessage message) throws IOException {
         output.writeTag(tag, WIRETYPE_START_GROUP);
         message.writeUnframed(output);
         output.writeTag(tag, WIRETYPE_END_GROUP);
     }

     static protected <T extends BaseMessage> T readGroup(CodedInputStream input, int tag, T group) throws IOException {
         group.mergeUnframed(input);
         input.checkLastTagWas(makeTag(tag, WIRETYPE_END_GROUP));
         return group;
     }

     static protected int computeGroupSize(int tag, BaseMessage message) {
         return CodedOutputStream.computeTagSize(tag) * 2 + message.serializedSizeUnframed();
     }


     static protected void writeMessage(CodedOutputStream output, int tag, BaseMessage message) throws IOException {
         output.writeTag(tag, WIRETYPE_LENGTH_DELIMITED);
         message.writeFramed(output);
     }

     static protected int computeMessageSize(int tag, BaseMessage message) {
         return CodedOutputStream.computeTagSize(tag) + message.serializedSizeFramed();
     }

     protected List<String> prefix(List<String> missingFields, String prefix) {
         ArrayList<String> rc = new ArrayList<String>(missingFields.size());
         for (String v : missingFields) {
             rc.add(prefix+v);
         }
         return rc;
     }


     /**
      * Read a raw Varint from the stream.  If larger than 32 bits, discard the
      * upper bits.
      */
     static protected int readRawVarint32(InputStream is) throws IOException {
       byte tmp = readRawByte(is);
       if (tmp >= 0) {
         return tmp;
       }
       int result = tmp & 0x7f;
       if ((tmp = readRawByte(is)) >= 0) {
         result |= tmp << 7;
       } else {
         result |= (tmp & 0x7f) << 7;
         if ((tmp = readRawByte(is)) >= 0) {
           result |= tmp << 14;
         } else {
           result |= (tmp & 0x7f) << 14;
           if ((tmp = readRawByte(is)) >= 0) {
             result |= tmp << 21;
           } else {
             result |= (tmp & 0x7f) << 21;
             result |= (tmp = readRawByte(is)) << 28;
             if (tmp < 0) {
               // Discard upper 32 bits.
               for (int i = 0; i < 5; i++) {
                 if (readRawByte(is) >= 0) return result;
               }
               throw new InvalidProtocolBufferException(
               "CodedInputStream encountered a malformed varint.");
             }
           }
         }
       }
       return result;
     }

     static protected byte readRawByte(InputStream is) throws IOException {
     	int rc = is.read();
     	if( rc == -1 ) {
 	        throw new InvalidProtocolBufferException(
 	        	      "While parsing a protocol message, the input ended unexpectedly " +
 	        	      "in the middle of a field.  This could mean either than the " +
 	        	      "input has been truncated or that an embedded message " +
 	        	      "misreported its own length.");
     	}
     	return (byte) rc;
     }
 }
	/**
	* 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.activemq.protobuf;

	import static org.apache.activemq.protobuf.WireInfo.WIRETYPE_END_GROUP;
	import static org.apache.activemq.protobuf.WireInfo.WIRETYPE_LENGTH_DELIMITED;
	import static org.apache.activemq.protobuf.WireInfo.WIRETYPE_START_GROUP;
	import static org.apache.activemq.protobuf.WireInfo.makeTag;

	import java.io.IOException;
	import java.io.InputStream;
	import java.io.OutputStream;
	import java.util.ArrayList;
	import java.util.Collection;
	import java.util.List;

	import com.google.protobuf.ByteString;
	import com.google.protobuf.CodedInputStream;
	import com.google.protobuf.CodedOutputStream;
	import com.google.protobuf.InvalidProtocolBufferException;

	abstract public class BaseMessage<T> implements Message<T> {

	protected int memoizedSerializedSize = -1;

	abstract public T clone() throws CloneNotSupportedException;

	///////////////////////////////////////////////////////////////////
	// Write related helpers.
	///////////////////////////////////////////////////////////////////

	public void writeFramed(CodedOutputStream output) throws IOException {
	output.writeRawVarint32(serializedSizeUnframed());
	writeUnframed(output);
	}

	public byte[] toUnframedByteArray() {
	try {
	byte[] result = new byte[serializedSizeUnframed()];
	CodedOutputStream output = CodedOutputStream.newInstance(result);
	writeUnframed(output);
	output.checkNoSpaceLeft();
	return result;
	} catch (IOException e) {
	throw new RuntimeException("Serializing to a byte array threw an IOException " + "(should never happen).", e);
	}
	}


	public byte[] toFramedByteArray() {
	try {
	byte[] result = new byte[serializedSizeFramed()];
	CodedOutputStream output = CodedOutputStream.newInstance(result);
	writeFramed(output);
	output.checkNoSpaceLeft();
	return result;
	} catch (IOException e) {
	throw new RuntimeException("Serializing to a byte array threw an IOException " + "(should never happen).", e);
	}
	}

	public void writeFramed(OutputStream output) throws IOException {
	CodedOutputStream codedOutput = CodedOutputStream.newInstance(output);
	writeFramed(codedOutput);
	codedOutput.flush();
	}

	public void writeUnframed(OutputStream output) throws IOException {
	CodedOutputStream codedOutput = CodedOutputStream.newInstance(output);
	writeUnframed(codedOutput);
	codedOutput.flush();
	}

	public int serializedSizeFramed() {
	int t = serializedSizeUnframed();
	return CodedOutputStream.computeRawVarint32Size(t) + t;

	}

	///////////////////////////////////////////////////////////////////
	// Read related helpers.
	///////////////////////////////////////////////////////////////////

	public T mergeFramed(CodedInputStream input) throws IOException {
	int length = input.readRawVarint32();
	int oldLimit = input.pushLimit(length);
	T rc= mergeUnframed(input);
	input.checkLastTagWas(0);
	input.popLimit(oldLimit);
	return rc;
	}

	public T mergeUnframed(ByteString data) throws InvalidProtocolBufferException {
	try {
	CodedInputStream input = data.newCodedInput();
	mergeUnframed(input);
	input.checkLastTagWas(0);
	return (T)this;
	} catch (InvalidProtocolBufferException e) {
	throw e;
	} catch (IOException e) {
	throw new RuntimeException("Reading from a ByteString threw an IOException (should " + "never happen).", e);
	}
	}

	public T mergeFramed(ByteString data) throws InvalidProtocolBufferException {
	try {
	CodedInputStream input = data.newCodedInput();
	mergeFramed(input);
	input.checkLastTagWas(0);
	return (T)this;
	} catch (InvalidProtocolBufferException e) {
	throw e;
	} catch (IOException e) {
	throw new RuntimeException("Reading from a ByteString threw an IOException (should " + "never happen).", e);
	}
	}

	public T mergeUnframed(byte[] data) throws InvalidProtocolBufferException {
	try {
	CodedInputStream input = CodedInputStream.newInstance(data);
	mergeUnframed(input);
	input.checkLastTagWas(0);
	return (T)this;
	} catch (InvalidProtocolBufferException e) {
	throw e;
	} catch (IOException e) {
	throw new RuntimeException("Reading from a byte array threw an IOException (should " + "never happen).", e);
	}
	}

	public T mergeFramed(byte[] data) throws InvalidProtocolBufferException {
	try {
	CodedInputStream input = CodedInputStream.newInstance(data);
	mergeFramed(input);
	input.checkLastTagWas(0);
	return (T)this;
	} catch (InvalidProtocolBufferException e) {
	throw e;
	} catch (IOException e) {
	throw new RuntimeException("Reading from a byte array threw an IOException (should " + "never happen).", e);
	}
	}

	public T mergeUnframed(InputStream input) throws IOException {
	CodedInputStream codedInput = CodedInputStream.newInstance(input);
	mergeUnframed(codedInput);
	return (T)this;
	}

	public T mergeFramed(InputStream input) throws IOException {
	int length = readRawVarint32(input);
	byte []data = new byte[length];
	int pos = 0;
	while( pos < length ) {
	int r = input.read(data, pos, length-pos);
	if( r < 0 ) {
	throw new InvalidProtocolBufferException("Input stream ended before a full message frame could be read.");
	}
	pos+=r;
	}
	return mergeUnframed(data);
	}

	///////////////////////////////////////////////////////////////////
	// Internal implementation methods.
	///////////////////////////////////////////////////////////////////
	static protected <T> void addAll(Iterable<T> values, Collection<? super T> list) {
	if (values instanceof Collection) {
	@SuppressWarnings("unsafe")
	Collection<T> collection = (Collection<T>)values;
	list.addAll(collection);
	} else {
	for (T value : values) {
	list.add(value);
	}
	}
	}

	static protected void writeGroup(CodedOutputStream output, int tag, BaseMessage message) throws IOException {
	output.writeTag(tag, WIRETYPE_START_GROUP);
	message.writeUnframed(output);
	output.writeTag(tag, WIRETYPE_END_GROUP);
	}

	static protected <T extends BaseMessage> T readGroup(CodedInputStream input, int tag, T group) throws IOException {
	group.mergeUnframed(input);
	input.checkLastTagWas(makeTag(tag, WIRETYPE_END_GROUP));
	return group;
	}

	static protected int computeGroupSize(int tag, BaseMessage message) {
	return CodedOutputStream.computeTagSize(tag) * 2 + message.serializedSizeUnframed();
	}


	static protected void writeMessage(CodedOutputStream output, int tag, BaseMessage message) throws IOException {
	output.writeTag(tag, WIRETYPE_LENGTH_DELIMITED);
	message.writeFramed(output);
	}

	static protected int computeMessageSize(int tag, BaseMessage message) {
	return CodedOutputStream.computeTagSize(tag) + message.serializedSizeFramed();
	}

	protected List<String> prefix(List<String> missingFields, String prefix) {
	ArrayList<String> rc = new ArrayList<String>(missingFields.size());
	for (String v : missingFields) {
	rc.add(prefix+v);
	}
	return rc;
	}


	/**
	* Read a raw Varint from the stream. If larger than 32 bits, discard the
	* upper bits.
	*/
	static protected int readRawVarint32(InputStream is) throws IOException {
	byte tmp = readRawByte(is);
	if (tmp >= 0) {
	return tmp;
	}
	int result = tmp & 0x7f;
	if ((tmp = readRawByte(is)) >= 0) {
	result \|= tmp << 7;
	} else {
	result \|= (tmp & 0x7f) << 7;
	if ((tmp = readRawByte(is)) >= 0) {
	result \|= tmp << 14;
	} else {
	result \|= (tmp & 0x7f) << 14;
	if ((tmp = readRawByte(is)) >= 0) {
	result \|= tmp << 21;
	} else {
	result \|= (tmp & 0x7f) << 21;
	result \|= (tmp = readRawByte(is)) << 28;
	if (tmp < 0) {
	// Discard upper 32 bits.
	for (int i = 0; i < 5; i++) {
	if (readRawByte(is) >= 0) return result;
	}
	throw new InvalidProtocolBufferException(
	"CodedInputStream encountered a malformed varint.");
	}
	}
	}
	}
	return result;
	}

	static protected byte readRawByte(InputStream is) throws IOException {
	int rc = is.read();
	if( rc == -1 ) {
	throw new InvalidProtocolBufferException(
	"While parsing a protocol message, the input ended unexpectedly " +
	"in the middle of a field. This could mean either than the " +
	"input has been truncated or that an embedded message " +
	"misreported its own length.");
	}
	return (byte) rc;
	}
	}