From efb5ad9f5fe48a77b6cd14e7bd2b25e3b13ecb1f Mon Sep 17 00:00:00 2001
From: Simon Rettberg
Date: Tue, 3 Jun 2014 16:44:56 +0200
Subject: Initial commit

---
 .../openslx/taskmanager/network/RequestParser.java | 66 ++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 daemon/src/main/java/org/openslx/taskmanager/network/RequestParser.java

(limited to 'daemon/src/main/java/org/openslx/taskmanager/network/RequestParser.java')

diff --git a/daemon/src/main/java/org/openslx/taskmanager/network/RequestParser.java b/daemon/src/main/java/org/openslx/taskmanager/network/RequestParser.java
new file mode 100644
index 0000000..d2cfb21
--- /dev/null
+++ b/daemon/src/main/java/org/openslx/taskmanager/network/RequestParser.java
@@ -0,0 +1,66 @@
+package org.openslx.taskmanager.network;
+
+import java.nio.charset.StandardCharsets;
+
+import org.apache.log4j.Logger;
+import org.openslx.taskmanager.api.TaskStatus;
+import org.openslx.taskmanager.main.Taskmanager;
+
+import com.google.gson.Gson;
+
+public class RequestParser
+{
+	private static final Logger log = Logger.getLogger( RequestParser.class );
+
+	/**
+	 * Our very own gson instance (for serializing replies)
+	 */
+	private static final Gson sendGson = new Gson();
+
+	/**
+	 * Handle the given unparsed request.
+	 * 
+	 * @param source source of the request, where the reply will be send to (if any)
+	 * @param payload Packet data received from network, already converted to a string
+	 */
+	public static byte[] handle( String payload )
+	{
+		String[] parts = payload.split( " *, *", 3 );
+		// Message format is "<message id>, <command>, <command payload/argument>"
+		if ( parts.length != 3 ) {
+			log.debug( "Could not split message" );
+			return null;
+		}
+		// Look at parts[1], if it's "status" it's a request for the task
+		// with the ID given in parts[2]
+		if ( parts[1].equals( "status" ) ) {
+			TaskStatus status = Taskmanager.getTaskStatus( parts[2] );
+			return serialize( parts[0], status );
+		}
+		// Now check if parts[1] is "release"
+		if ( parts[1].equals( "release" ) ) {
+			Taskmanager.releaseTask( parts[2] );
+			return null;
+		}
+		// Anything else in parts[0] will be treated as a fresh task invocation, so let's
+		// pass it on to the task manager.
+		TaskStatus status = Taskmanager.submitTask( parts[1], parts[2] );
+		return serialize( parts[0], status );
+	}
+
+	private static byte[] serialize( String messageId, TaskStatus status )
+	{
+		String data;
+		try {
+			synchronized ( sendGson ) {
+				data = sendGson.toJson( status );
+			}
+		} catch ( Throwable e ) {
+			log.warn( "Could not serialize reply with TaskStatus " + status.getStatusObjectClassName() );
+			log.warn( e.toString() );
+			return null;
+		}
+		return ( messageId + ',' + data ).getBytes( StandardCharsets.UTF_8 );
+	}
+
+}
-- 
cgit v1.2.3-55-g7522