Style fixes and optimizations

3 files changed, 12 insertions, 54 deletions

diff --git a/src/org/traccar/protocol/GranitFrameDecoder.java b/src/org/traccar/protocol/GranitFrameDecoder.java
deleted file mode 100644
index ad6ddc99d..000000000
--- a/src/org/traccar/protocol/GranitFrameDecoder.java
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * Copyright 2016 Anton Tananaev (anton.tananaev@gmail.com)
- *
- * Licensed 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.traccar.protocol;
-
-import org.jboss.netty.buffer.ChannelBuffer;
-import org.jboss.netty.channel.Channel;
-import org.jboss.netty.channel.ChannelHandlerContext;
-import org.jboss.netty.handler.codec.frame.FrameDecoder;
-import org.traccar.helper.StringFinder;
-
-public class GranitFrameDecoder extends FrameDecoder {
-
-    @Override
-    protected Object decode(
-            ChannelHandlerContext ctx, Channel channel, ChannelBuffer buf) throws Exception {
-
-        int index = buf.indexOf(buf.readerIndex(), buf.writerIndex(), new StringFinder("\r\n"));
-        if (index != -1) {
-            ChannelBuffer frame = buf.readBytes(index - buf.readerIndex());
-            buf.skipBytes(2);
-            return frame;
-        }
-
-        return null;
-    }
-
-}
diff --git a/src/org/traccar/protocol/GranitProtocol.java b/src/org/traccar/protocol/GranitProtocol.java
index fb9d10809..07357b786 100644
--- a/src/org/traccar/protocol/GranitProtocol.java
+++ b/src/org/traccar/protocol/GranitProtocol.java
@@ -17,6 +17,7 @@ package org.traccar.protocol;
 
 import org.jboss.netty.bootstrap.ServerBootstrap;
 import org.jboss.netty.channel.ChannelPipeline;
+import org.jboss.netty.handler.codec.frame.LineBasedFrameDecoder;
 import org.traccar.BaseProtocol;
 import org.traccar.TrackerServer;
 import org.traccar.model.Command;
@@ -39,7 +40,7 @@ public class GranitProtocol extends BaseProtocol {
         TrackerServer server = new TrackerServer(new ServerBootstrap(), this.getName()) {
             @Override
             protected void addSpecificHandlers(ChannelPipeline pipeline) {
-                pipeline.addLast("frameDecoder", new GranitFrameDecoder());
+                pipeline.addLast("frameDecoder", new LineBasedFrameDecoder(1024, true, false));
                 pipeline.addLast("objectEncoder", new GranitProtocolEncoder());
                 pipeline.addLast("objectDecoder", new GranitProtocolDecoder(GranitProtocol.this));
             }
diff --git a/src/org/traccar/protocol/GranitProtocolDecoder.java b/src/org/traccar/protocol/GranitProtocolDecoder.java
index 16229dc18..6f334d3c5 100644
--- a/src/org/traccar/protocol/GranitProtocolDecoder.java
+++ b/src/org/traccar/protocol/GranitProtocolDecoder.java
@@ -39,11 +39,11 @@ public class GranitProtocolDecoder extends BaseProtocolDecoder {
     }
 
     public static void appendChecksum(ChannelBuffer buffer, int length) {
-        buffer.writeByte(0x2a); // asterisk
+        buffer.writeByte('*');
         int checksum = Checksum.xor(buffer.toByteBuffer(0, length)) & 0xFF;
         String checksumString = String.format("%02X", checksum);
         buffer.writeBytes(checksumString.getBytes(StandardCharsets.US_ASCII));
-        buffer.writeByte(0x0D); buffer.writeByte(0x0A);
+        buffer.writeByte('\r'); buffer.writeByte('\n');
     }
 
     private static void sendResponseCurrent(Channel channel, int deviceId, long time) {
@@ -132,12 +132,10 @@ public class GranitProtocolDecoder extends BaseProtocolDecoder {
     protected Object decode(Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
 
         ChannelBuffer buf = (ChannelBuffer) msg;
-
-        if (hasDeviceId() &&  buf.toString(StandardCharsets.US_ASCII).contains("OK")
-                || buf.toString(StandardCharsets.US_ASCII).startsWith("ERROR")
-                || buf.toString(StandardCharsets.US_ASCII).startsWith("+PR")
-                || buf.toString(StandardCharsets.US_ASCII).startsWith("+IDNT")
-                || buf.toString(StandardCharsets.US_ASCII).startsWith("+BBMD")) {
+        String bufString = buf.toString(StandardCharsets.US_ASCII);
+        if (hasDeviceId() &&  bufString.contains("OK") || bufString.startsWith("ERROR")
+                || bufString.startsWith("+PR") || bufString.startsWith("+IDNT")
+                || bufString.startsWith("+BBMD")) {
             Position position = new Position();
             position.setProtocol(getProtocolName());
             position.setDeviceId(getDeviceId());
@@ -145,7 +143,7 @@ public class GranitProtocolDecoder extends BaseProtocolDecoder {
             position.setTime(new Date());
             getLastLocation(position, new Date());
             position.setValid(false);
-            position.set(Position.KEY_RESULT, buf.toString(StandardCharsets.US_ASCII));
+            position.set(Position.KEY_RESULT, bufString);
 
             return position;
         }
@@ -153,10 +151,9 @@ public class GranitProtocolDecoder extends BaseProtocolDecoder {
         if (buf.readableBytes() < HEADER_LENGTH) {
             return null;
         }
+        buf.skipBytes(HEADER_LENGTH);
 
-        String header = buf.readBytes(HEADER_LENGTH).toString(StandardCharsets.US_ASCII);
-
-        if (header.equals("+RRCB~")) {
+        if (bufString.startsWith("+RRCB~")) {
             buf.skipBytes(2); //binary length 26
             int deviceId = buf.readUnsignedShort();
             if (!identify(String.valueOf(deviceId), channel, remoteAddress)) {
@@ -175,7 +172,7 @@ public class GranitProtocolDecoder extends BaseProtocolDecoder {
             decodeStructure(buf, position);
             return position;
 
-        } else if (header.equals("+DDAT~")) {
+        } else if (bufString.startsWith("+DDAT~")) {
             buf.skipBytes(2); //binary length
             int deviceId = buf.readUnsignedShort();
             if (!identify(String.valueOf(deviceId), channel, remoteAddress)) {