1 files changed, 108 insertions, 0 deletions
diff --git a/target_explorer/plugins/org.eclipse.tcf.te.filesystem.core/src/org/eclipse/tcf/te/tcf/filesystem/core/model/ModelManager.java b/target_explorer/plugins/org.eclipse.tcf.te.filesystem.core/src/org/eclipse/tcf/te/tcf/filesystem/core/model/ModelManager.java
new file mode 100644
index 000000000..cc0a5056e
--- /dev/null
+++ b/target_explorer/plugins/org.eclipse.tcf.te.filesystem.core/src/org/eclipse/tcf/te/tcf/filesystem/core/model/ModelManager.java
@@ -0,0 +1,108 @@
+/*******************************************************************************
+ * Copyright (c) 2014 Wind River Systems, Inc. and others. All rights reserved.
+ * This program and the accompanying materials are made available under the terms
+ * of the Eclipse Public License v1.0 which accompanies this distribution, and is
+ * available at http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ * Wind River Systems - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.tcf.te.tcf.filesystem.core.model;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.concurrent.atomic.AtomicReference;
+
+import org.eclipse.core.runtime.Assert;
+import org.eclipse.tcf.protocol.Protocol;
+import org.eclipse.tcf.te.tcf.filesystem.core.interfaces.runtime.IRuntimeModel;
+import org.eclipse.tcf.te.tcf.locator.interfaces.nodes.IPeerNode;
+
+/**
+ * Filesystem service model manager implementation.
+ */
+public class ModelManager {
+	// Reference to the runtime models
+	/* default */ static final Map<String, IRuntimeModel> runtimeModels = new HashMap<String, IRuntimeModel>();
+
+	/**
+	 * Returns the runtime model instance for the given peer model
+	 * <p>
+	 * If not yet initialized, a new runtime model will be initialized before returning.
+	 *
+	 * @param peerNode The peer model instance. Must not be <code>null</code>.
+	 * @return The runtime model.
+	 */
+	public static IRuntimeModel getRuntimeModel(final IPeerNode peerNode) {
+		Assert.isNotNull(peerNode);
+
+		// The result reference holder
+		final AtomicReference<IRuntimeModel> runtimeModel = new AtomicReference<IRuntimeModel>();
+
+		// Create the runnable to execute
+		Runnable runnable = new Runnable() {
+			@Override
+            public void run() {
+				Assert.isTrue(Protocol.isDispatchThread());
+
+				// Get the peer id
+				String id = peerNode.getPeerId();
+				// Lookup the runtime model instance
+				IRuntimeModel candidate = runtimeModels.get(id);
+				// Initialize a new runtime model instance if necessary
+				if (candidate == null) {
+					candidate = initializeRuntimeModel(peerNode);
+					if (candidate != null) runtimeModels.put(id, candidate);
+				}
+				// Store to the result reference holder
+				runtimeModel.set(candidate);
+			}
+		};
+
+		// Execute the runnable
+		if (Protocol.isDispatchThread()) runnable.run();
+		else Protocol.invokeAndWait(runnable);
+
+		return runtimeModel.get();
+	}
+
+	/**
+	 * Initialize the runtime model.
+	 * <p>
+	 * Must be called within the TCF dispatch thread.
+	 *
+	 * @param peerNode The peer model instance. Must not be <code>null</code>.
+	 * @return The runtime model.
+	 */
+	protected static IRuntimeModel initializeRuntimeModel(IPeerNode peerNode) {
+		Assert.isTrue(Protocol.isDispatchThread());
+		IRuntimeModel runtimeModel = new RuntimeModel(peerNode);
+		return runtimeModel;
+	}
+
+	/**
+	 * Dispose the runtime model.
+	 *
+	 * @param peerNode The peer model instance. Must not be <code>null</code>.
+	 */
+	public static void disposeRuntimeModel(final IPeerNode peerNode) {
+		Assert.isNotNull(peerNode);
+
+		Runnable runnable = new Runnable() {
+			@Override
+            public void run() {
+				Assert.isTrue(Protocol.isDispatchThread());
+
+				// Get the peer id
+				String id = peerNode.getPeerId();
+				// Lookup the runtime model instance
+				IRuntimeModel candidate = runtimeModels.remove(id);
+				// Dispose it
+				if (candidate != null) candidate.dispose();
+			}
+		};
+
+		if (Protocol.isDispatchThread()) runnable.run();
+		else Protocol.invokeAndWait(runnable);
+	}
+}