Adding health stat message listeners

Project: http://git-wip-us.apache.org/repos/asf/incubator-stratos/repo
Commit: http://git-wip-us.apache.org/repos/asf/incubator-stratos/commit/b4df4706
Tree: http://git-wip-us.apache.org/repos/asf/incubator-stratos/tree/b4df4706
Diff: http://git-wip-us.apache.org/repos/asf/incubator-stratos/diff/b4df4706

Branch: refs/heads/master
Commit: b4df4706284802c3045f8b4d41077832177eaddf
Parents: a22a867
Author: Lahiru Sandaruwan <[email protected]>
Authored: Fri Dec 20 17:03:11 2013 +0530
Committer: Udara Liyanage <[email protected]>
Committed: Fri Dec 20 20:25:37 2013 -0500

----------------------------------------------------------------------
 .../stat/AverageLoadAverageEventListener.java   | 28 ++++++++++++
 .../AverageMemoryConsumptionEventListener.java  | 28 ++++++++++++
 .../AverageRequestsInFlightEventListener.java   | 28 ++++++++++++
 .../GradientOfLoadAverageEventListener.java     | 28 ++++++++++++
 ...radientOfMemoryConsumptionEventListener.java | 28 ++++++++++++
 ...GradientOfRequestsInFlightEventListener.java | 28 ++++++++++++
 .../MemberAverageLoadAverageEventListener.java  | 29 ++++++++++++
 ...erAverageMemoryConsumptionEventListener.java | 28 ++++++++++++
 .../health/stat/MemberFaultEventListener.java   | 28 ++++++++++++
 ...emberGradientOfLoadAverageEventListener.java | 48 ++++++++++++++++++++
 ...radientOfMemoryConsumptionEventListener.java | 28 ++++++++++++
 ...ondDerivativeOfLoadAverageEventListener.java | 28 ++++++++++++
 ...ivativeOfMemoryConsumptionEventListener.java | 28 ++++++++++++
 ...ondDerivativeOfLoadAverageEventListener.java | 28 ++++++++++++
 ...ivativeOfMemoryConsumptionEventListener.java | 28 ++++++++++++
 ...rivativeOfRequestsInFlightEventListener.java | 28 ++++++++++++
 16 files changed, 469 insertions(+)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/incubator-stratos/blob/b4df4706/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/AverageLoadAverageEventListener.java
----------------------------------------------------------------------
diff --git 
a/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/AverageLoadAverageEventListener.java
 
b/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/AverageLoadAverageEventListener.java
new file mode 100644
index 0000000..c65ee0b
--- /dev/null
+++ 
b/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/AverageLoadAverageEventListener.java
@@ -0,0 +1,28 @@
+/*
+ * 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.stratos.messaging.listener.health.stat;
+
+import org.apache.stratos.messaging.event.Event;
+
+/**
+ *  Average of Load average event listener
+ */
+public class AverageLoadAverageEventListener extends Event {
+}

http://git-wip-us.apache.org/repos/asf/incubator-stratos/blob/b4df4706/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/AverageMemoryConsumptionEventListener.java
----------------------------------------------------------------------
diff --git 
a/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/AverageMemoryConsumptionEventListener.java
 
b/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/AverageMemoryConsumptionEventListener.java
new file mode 100644
index 0000000..b5d904e
--- /dev/null
+++ 
b/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/AverageMemoryConsumptionEventListener.java
@@ -0,0 +1,28 @@
+/*
+ * 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.stratos.messaging.listener.health.stat;
+
+import org.apache.stratos.messaging.event.Event;
+
+/**
+ * Memory consumption  event listener
+ */
+public class AverageMemoryConsumptionEventListener extends Event {
+}

http://git-wip-us.apache.org/repos/asf/incubator-stratos/blob/b4df4706/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/AverageRequestsInFlightEventListener.java
----------------------------------------------------------------------
diff --git 
a/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/AverageRequestsInFlightEventListener.java
 
b/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/AverageRequestsInFlightEventListener.java
new file mode 100644
index 0000000..e707d70
--- /dev/null
+++ 
b/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/AverageRequestsInFlightEventListener.java
@@ -0,0 +1,28 @@
+/*
+ * 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.stratos.messaging.listener.health.stat;
+
+import org.apache.stratos.messaging.event.Event;
+
+/**
+ *  Average of requests in flight  event listener
+ */
+public class AverageRequestsInFlightEventListener extends Event {
+}

http://git-wip-us.apache.org/repos/asf/incubator-stratos/blob/b4df4706/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/GradientOfLoadAverageEventListener.java
----------------------------------------------------------------------
diff --git 
a/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/GradientOfLoadAverageEventListener.java
 
b/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/GradientOfLoadAverageEventListener.java
new file mode 100644
index 0000000..de21abd
--- /dev/null
+++ 
b/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/GradientOfLoadAverageEventListener.java
@@ -0,0 +1,28 @@
+/*
+ * 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.stratos.messaging.listener.health.stat;
+
+import org.apache.stratos.messaging.event.Event;
+
+/**
+ * Gradient of Load average event listener
+ */
+public class GradientOfLoadAverageEventListener extends Event {
+}

http://git-wip-us.apache.org/repos/asf/incubator-stratos/blob/b4df4706/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/GradientOfMemoryConsumptionEventListener.java
----------------------------------------------------------------------
diff --git 
a/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/GradientOfMemoryConsumptionEventListener.java
 
b/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/GradientOfMemoryConsumptionEventListener.java
new file mode 100644
index 0000000..9bc0305
--- /dev/null
+++ 
b/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/GradientOfMemoryConsumptionEventListener.java
@@ -0,0 +1,28 @@
+/*
+ * 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.stratos.messaging.listener.health.stat;
+
+import org.apache.stratos.messaging.event.Event;
+
+/**
+ * Memory consumption  event listener
+ */
+public class GradientOfMemoryConsumptionEventListener extends Event {
+}

http://git-wip-us.apache.org/repos/asf/incubator-stratos/blob/b4df4706/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/GradientOfRequestsInFlightEventListener.java
----------------------------------------------------------------------
diff --git 
a/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/GradientOfRequestsInFlightEventListener.java
 
b/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/GradientOfRequestsInFlightEventListener.java
new file mode 100644
index 0000000..c4824a5
--- /dev/null
+++ 
b/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/GradientOfRequestsInFlightEventListener.java
@@ -0,0 +1,28 @@
+/*
+ * 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.stratos.messaging.listener.health.stat;
+
+import org.apache.stratos.messaging.event.Event;
+
+/**
+ * Gradient of requests in flight event listener
+ */
+public class GradientOfRequestsInFlightEventListener extends Event {
+}

http://git-wip-us.apache.org/repos/asf/incubator-stratos/blob/b4df4706/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/MemberAverageLoadAverageEventListener.java
----------------------------------------------------------------------
diff --git 
a/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/MemberAverageLoadAverageEventListener.java
 
b/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/MemberAverageLoadAverageEventListener.java
new file mode 100644
index 0000000..8f10aa5
--- /dev/null
+++ 
b/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/MemberAverageLoadAverageEventListener.java
@@ -0,0 +1,29 @@
+/*
+ * 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.stratos.messaging.listener.health.stat;
+
+import org.apache.stratos.messaging.event.Event;
+
+/**
+ *  Average of Load average event listener
+ */
+public class MemberAverageLoadAverageEventListener extends Event {
+
+}

http://git-wip-us.apache.org/repos/asf/incubator-stratos/blob/b4df4706/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/MemberAverageMemoryConsumptionEventListener.java
----------------------------------------------------------------------
diff --git 
a/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/MemberAverageMemoryConsumptionEventListener.java
 
b/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/MemberAverageMemoryConsumptionEventListener.java
new file mode 100644
index 0000000..68580c3
--- /dev/null
+++ 
b/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/MemberAverageMemoryConsumptionEventListener.java
@@ -0,0 +1,28 @@
+/*
+ * 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.stratos.messaging.listener.health.stat;
+
+import org.apache.stratos.messaging.event.Event;
+
+/**
+ *  Average of memory consumption event listener
+ */
+public class MemberAverageMemoryConsumptionEventListener extends Event {
+}

http://git-wip-us.apache.org/repos/asf/incubator-stratos/blob/b4df4706/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/MemberFaultEventListener.java
----------------------------------------------------------------------
diff --git 
a/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/MemberFaultEventListener.java
 
b/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/MemberFaultEventListener.java
new file mode 100644
index 0000000..d8fc9f4
--- /dev/null
+++ 
b/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/MemberFaultEventListener.java
@@ -0,0 +1,28 @@
+/*
+ * 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.stratos.messaging.listener.health.stat;
+
+import org.apache.stratos.messaging.event.Event;
+
+/**
+ *  Member fault event listener
+ */
+public class MemberFaultEventListener extends Event {
+}

http://git-wip-us.apache.org/repos/asf/incubator-stratos/blob/b4df4706/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/MemberGradientOfLoadAverageEventListener.java
----------------------------------------------------------------------
diff --git 
a/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/MemberGradientOfLoadAverageEventListener.java
 
b/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/MemberGradientOfLoadAverageEventListener.java
new file mode 100644
index 0000000..46b8891
--- /dev/null
+++ 
b/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/MemberGradientOfLoadAverageEventListener.java
@@ -0,0 +1,48 @@
+/*
+ * 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.stratos.messaging.listener.health.stat;
+
+import org.apache.stratos.messaging.event.Event;
+
+/**
+ * Gradient of Load average event listener
+ */
+public class MemberGradientOfLoadAverageEventListener extends Event {
+
+    private String memberId;
+    private float value;
+
+
+    public String getMemberId() {
+        return memberId;
+    }
+
+    public void setMemberId(String memberId) {
+        this.memberId = memberId;
+    }
+
+    public float getValue() {
+        return value;
+    }
+
+    public void setValue(float value) {
+        this.value = value;
+    }
+}

http://git-wip-us.apache.org/repos/asf/incubator-stratos/blob/b4df4706/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/MemberGradientOfMemoryConsumptionEventListener.java
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diff --git 
a/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/MemberGradientOfMemoryConsumptionEventListener.java
 
b/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/MemberGradientOfMemoryConsumptionEventListener.java
new file mode 100644
index 0000000..7d67fe7
--- /dev/null
+++ 
b/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/MemberGradientOfMemoryConsumptionEventListener.java
@@ -0,0 +1,28 @@
+/*
+ * 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.stratos.messaging.listener.health.stat;
+
+import org.apache.stratos.messaging.event.Event;
+
+/**
+ * Gradient of  memory consumption event listener
+ */
+public class MemberGradientOfMemoryConsumptionEventListener extends Event {
+}

http://git-wip-us.apache.org/repos/asf/incubator-stratos/blob/b4df4706/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/MemberSecondDerivativeOfLoadAverageEventListener.java
----------------------------------------------------------------------
diff --git 
a/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/MemberSecondDerivativeOfLoadAverageEventListener.java
 
b/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/MemberSecondDerivativeOfLoadAverageEventListener.java
new file mode 100644
index 0000000..ec2b4b7
--- /dev/null
+++ 
b/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/MemberSecondDerivativeOfLoadAverageEventListener.java
@@ -0,0 +1,28 @@
+/*
+ * 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.stratos.messaging.listener.health.stat;
+
+import org.apache.stratos.messaging.event.Event;
+
+/**
+ * Second derivative of Load average event listener
+ */
+public class MemberSecondDerivativeOfLoadAverageEventListener extends Event {
+}

http://git-wip-us.apache.org/repos/asf/incubator-stratos/blob/b4df4706/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/MemberSecondDerivativeOfMemoryConsumptionEventListener.java
----------------------------------------------------------------------
diff --git 
a/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/MemberSecondDerivativeOfMemoryConsumptionEventListener.java
 
b/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/MemberSecondDerivativeOfMemoryConsumptionEventListener.java
new file mode 100644
index 0000000..d854e52
--- /dev/null
+++ 
b/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/MemberSecondDerivativeOfMemoryConsumptionEventListener.java
@@ -0,0 +1,28 @@
+/*
+ * 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.stratos.messaging.listener.health.stat;
+
+import org.apache.stratos.messaging.event.Event;
+
+/**
+ *  Second derivative of memory consumption event listener
+ */
+public class MemberSecondDerivativeOfMemoryConsumptionEventListener extends 
Event {
+}

http://git-wip-us.apache.org/repos/asf/incubator-stratos/blob/b4df4706/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/SecondDerivativeOfLoadAverageEventListener.java
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diff --git 
a/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/SecondDerivativeOfLoadAverageEventListener.java
 
b/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/SecondDerivativeOfLoadAverageEventListener.java
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b/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/SecondDerivativeOfLoadAverageEventListener.java
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+/*
+ * 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.stratos.messaging.listener.health.stat;
+
+import org.apache.stratos.messaging.event.Event;
+
+/**
+ *  Second derivative of Load average event listener
+ */
+public class SecondDerivativeOfLoadAverageEventListener extends Event {
+}

http://git-wip-us.apache.org/repos/asf/incubator-stratos/blob/b4df4706/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/SecondDerivativeOfMemoryConsumptionEventListener.java
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diff --git 
a/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/SecondDerivativeOfMemoryConsumptionEventListener.java
 
b/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/SecondDerivativeOfMemoryConsumptionEventListener.java
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b/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/SecondDerivativeOfMemoryConsumptionEventListener.java
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+/*
+ * 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.stratos.messaging.listener.health.stat;
+
+import org.apache.stratos.messaging.event.Event;
+
+/**
+ *  Second derivative of memory consumption event listener  event listener
+ */
+public class SecondDerivativeOfMemoryConsumptionEventListener extends Event {
+}

http://git-wip-us.apache.org/repos/asf/incubator-stratos/blob/b4df4706/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/SecondDerivativeOfRequestsInFlightEventListener.java
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diff --git 
a/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/SecondDerivativeOfRequestsInFlightEventListener.java
 
b/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/SecondDerivativeOfRequestsInFlightEventListener.java
new file mode 100644
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b/components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/listener/health/stat/SecondDerivativeOfRequestsInFlightEventListener.java
@@ -0,0 +1,28 @@
+/*
+ * 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.stratos.messaging.listener.health.stat;
+
+import org.apache.stratos.messaging.event.Event;
+
+/**
+ *  Second derivative of requests in flight event listener
+ */
+public class SecondDerivativeOfRequestsInFlightEventListener extends Event {
+}

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