diff --git a/src/main/java/org/gcube/common/workspacetaskexecutor/CheckableTask.java b/src/main/java/org/gcube/common/workspacetaskexecutor/CheckableTask.java
new file mode 100644
index 0000000..8d306a9
--- /dev/null
+++ b/src/main/java/org/gcube/common/workspacetaskexecutor/CheckableTask.java
@@ -0,0 +1,29 @@
+/*
+ *
+ */
+package org.gcube.common.workspacetaskexecutor;
+
+import org.gcube.common.workspacetaskexecutor.shared.ItemNotExecutable;
+
+
+/**
+ * The Interface DoCheckTask.
+ *
+ * @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it
+ * Apr 26, 2018
+ * @param <T> the generic type
+ */
+public interface CheckableTask<T> {
+
+
+	/**
+	 * Check item executable.
+	 *
+	 * @param itemId the item id
+	 * @return the t
+	 * @throws ItemNotExecutable the item not executable
+	 * @throws Exception the exception
+	 */
+	T checkItemExecutable(String itemId) throws ItemNotExecutable, Exception;
+
+}
diff --git a/src/main/java/org/gcube/common/workspacetaskexecutor/ConfigurableTask.java b/src/main/java/org/gcube/common/workspacetaskexecutor/ConfigurableTask.java
new file mode 100644
index 0000000..4b62e88
--- /dev/null
+++ b/src/main/java/org/gcube/common/workspacetaskexecutor/ConfigurableTask.java
@@ -0,0 +1,40 @@
+/**
+ *
+ */
+package org.gcube.common.workspacetaskexecutor;
+
+import org.gcube.common.workspacetaskexecutor.shared.ItemNotExecutable;
+import org.gcube.common.workspacetaskexecutor.shared.TaskConfiguration;
+
+
+/**
+ * The Interface ConfigurableTask.
+ *
+ * @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it
+ * Apr 26, 2018
+ */
+public interface ConfigurableTask {
+
+
+
+	/**
+	 * Removes the task config.
+	 *
+	 * @param config the config
+	 * @return the boolean
+	 * @throws ItemNotExecutable the item not executable
+	 * @throws Exception the exception
+	 */
+	Boolean removeTaskConfig(TaskConfiguration config) throws ItemNotExecutable, Exception;
+
+
+	/**
+	 * Adds the task config.
+	 *
+	 * @param config the config
+	 * @return the boolean
+	 * @throws ItemNotExecutable the item not executable
+	 * @throws Exception the exception
+	 */
+	Boolean addTaskConfig(TaskConfiguration config) throws ItemNotExecutable, Exception;
+}
diff --git a/src/main/java/org/gcube/common/workspacetaskexecutor/ExecutableTask.java b/src/main/java/org/gcube/common/workspacetaskexecutor/ExecutableTask.java
new file mode 100644
index 0000000..710be39
--- /dev/null
+++ b/src/main/java/org/gcube/common/workspacetaskexecutor/ExecutableTask.java
@@ -0,0 +1,57 @@
+package org.gcube.common.workspacetaskexecutor;
+
+import org.gcube.common.workspacetaskexecutor.shared.ItemNotExecutable;
+
+
+/**
+ * The Interface DoExcecutorTask.
+ *
+ * @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it
+ * Apr 26, 2018
+ * @param <O> the generic type
+ */
+public interface ExecutableTask<O> {
+
+
+	/**
+	 * Do run.
+	 *
+	 * @param itemId the item id
+	 * @return the o
+	 * @throws ItemNotExecutable the item not executable
+	 * @throws Exception the exception
+	 */
+	O doRun(String itemId) throws ItemNotExecutable, Exception;
+
+	/**
+	 * Stop run.
+	 *
+	 * @param itemId the item id
+	 * @return the boolean
+	 * @throws ItemNotExecutable the item not executable
+	 * @throws Exception the exception
+	 */
+	Boolean stopRun(String itemId) throws ItemNotExecutable, Exception;
+
+
+	/**
+	 * Monitor run status.
+	 *
+	 * @param itemId the item id
+	 * @return the o
+	 * @throws ItemNotExecutable the item not executable
+	 * @throws Exception the exception
+	 */
+	O monitorRunStatus(String itemId) throws ItemNotExecutable, Exception;
+
+
+	/**
+	 * Register callback for id.
+	 *
+	 * @param itemId the item id
+	 * @throws Exception the exception
+	 */
+	void registerCallbackForId(String itemId) throws Exception;
+
+
+}
diff --git a/src/main/java/org/gcube/common/workspacetaskexecutor/WorkspaceTaskExecutor.gwt.xml b/src/main/java/org/gcube/common/workspacetaskexecutor/WorkspaceTaskExecutor.gwt.xml
new file mode 100644
index 0000000..410bc37
--- /dev/null
+++ b/src/main/java/org/gcube/common/workspacetaskexecutor/WorkspaceTaskExecutor.gwt.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module rename-to='workspacetaskexecutor'>
+	<!-- Inherit the core Web Toolkit stuff. -->
+	<inherits name='com.google.gwt.user.User' />
+
+	<!-- Specify the paths for translatable code -->
+	<source path='client' />
+	<source path='shared' />
+
+</module>
diff --git a/src/main/java/org/gcube/common/workspacetaskexecutor/shared/ItemNotExecutable.java b/src/main/java/org/gcube/common/workspacetaskexecutor/shared/ItemNotExecutable.java
new file mode 100644
index 0000000..e777a7e
--- /dev/null
+++ b/src/main/java/org/gcube/common/workspacetaskexecutor/shared/ItemNotExecutable.java
@@ -0,0 +1,32 @@
+package org.gcube.common.workspacetaskexecutor.shared;
+
+
+// TODO: Auto-generated Javadoc
+/**
+ * The Class ItemNotSynched.
+ *
+ * @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it
+ * Feb 8, 2018
+ */
+public class ItemNotExecutable extends Exception {
+
+	/** The Constant serialVersionUID. */
+	private static final long serialVersionUID = 3965350221961538838L;
+	
+	/**
+	 * Instantiates a new item not synched.
+	 */
+	public ItemNotExecutable() {
+		super();
+	}
+
+	/**
+	 * Instantiates a new item not synched.
+	 *
+	 * @param arg0 the arg 0
+	 */
+	public ItemNotExecutable(String arg0) {
+		super(arg0);
+	}
+
+}
diff --git a/src/main/java/org/gcube/common/workspacetaskexecutor/shared/TaskConfiguration.java b/src/main/java/org/gcube/common/workspacetaskexecutor/shared/TaskConfiguration.java
new file mode 100644
index 0000000..96b38c6
--- /dev/null
+++ b/src/main/java/org/gcube/common/workspacetaskexecutor/shared/TaskConfiguration.java
@@ -0,0 +1,47 @@
+/**
+ *
+ */
+package org.gcube.common.workspacetaskexecutor.shared;
+
+import java.util.Map;
+
+/**
+ * The Interface DoTaskConfiguration.
+ *
+ * @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it
+ * Apr 26, 2018
+ */
+public interface TaskConfiguration {
+
+
+	/**
+	 * Gets the task id.
+	 *
+	 * @return the task id
+	 */
+	String getTaskId();
+
+
+	/**
+	 * Gets the item id.
+	 *
+	 * @return the item id
+	 */
+	String getItemId();
+
+	/**
+	 * Gets the task description.
+	 *
+	 * @return the task description
+	 */
+	String getTaskDescription();
+
+	/**
+	 * Gets the map parameters.
+	 *
+	 * @return the map parameters
+	 */
+	Map<String, String> getMapParameters();
+
+
+}
diff --git a/src/main/java/org/gcube/common/workspacetaskexecutor/shared/WorkspaceFolderLocked.java b/src/main/java/org/gcube/common/workspacetaskexecutor/shared/WorkspaceFolderLocked.java
new file mode 100644
index 0000000..3aa9848
--- /dev/null
+++ b/src/main/java/org/gcube/common/workspacetaskexecutor/shared/WorkspaceFolderLocked.java
@@ -0,0 +1,45 @@
+package org.gcube.common.workspacetaskexecutor.shared;
+
+
+
+/**
+ * The Class WorkspaceFolderLocked.
+ *
+ * @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it
+ * Mar 13, 2018
+ */
+public class WorkspaceFolderLocked extends Exception {
+
+	/**
+	 *
+	 */
+	private static final long serialVersionUID = -778037901117579435L;
+	private String folderId;
+
+	/**
+	 * Instantiates a new item not synched.
+	 */
+	public WorkspaceFolderLocked() {
+		super();
+	}
+
+	/**
+	 * Instantiates a new item not synched.
+	 *
+	 * @param arg0 the arg 0
+	 */
+	public WorkspaceFolderLocked(String folderId, String arg0) {
+		super(arg0);
+		this.folderId = folderId;
+	}
+
+
+	/**
+	 * @return the folderId
+	 */
+	public String getFolderId() {
+
+		return folderId;
+	}
+
+}