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Posted to dev@stratos.apache.org by Pranavan135 <gi...@git.apache.org> on 2015/07/05 17:43:41 UTC
[GitHub] stratos pull request: GSoC - Curve Fitting
GitHub user Pranavan135 opened a pull request:
https://github.com/apache/stratos/pull/382
GSoC - Curve Fitting
Do not merge. Tentative PR to get feedbacks for my work.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/Pranavan135/stratos CurveFittingGSoC
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/stratos/pull/382.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #382
----
commit 38e3e44854c94844035b2d4f1776504ecb953df8
Author: Pranavan <23...@gmail.com>
Date: 2015-06-08T11:46:01Z
First Commit
commit 4bd3e3f3be177283584a7b8ff5105d01108ce636
Author: Pranavan <23...@gmail.com>
Date: 2015-06-08T11:54:27Z
Methods added inside RuleTasksDelegator
commit ed69ca0331826b6e3eb8db1795358f812a30e7a9
Author: Pranavan <23...@gmail.com>
Date: 2015-06-10T12:44:11Z
Merge remote-tracking branch 'upstream/master' into CurveFittingGSoC
commit 37ce622ce81049eaf16968996c11fcf58156c003
Author: Pranavan <23...@gmail.com>
Date: 2015-06-10T13:09:15Z
Dependency added for Apache common math lib
commit d138c29cccc59a2e20552dec6bcf89d6273172a0
Author: Pranavan <23...@gmail.com>
Date: 2015-06-10T13:30:20Z
Revert "Dependency added for Apache common math lib"
This reverts commit 37ce622ce81049eaf16968996c11fcf58156c003.
commit eaefa66188d8d9353389077f75d2a1870b8b89bb
Author: Pranavan <23...@gmail.com>
Date: 2015-06-10T13:39:12Z
Dependency for Math libs and CurveFittingWindowProcessor added
commit e6b6d49df24eda46fae8f44ea3d16c1102c4ab17
Author: Pranavan <23...@gmail.com>
Date: 2015-06-10T13:43:38Z
Unwanted Log files deleted
commit 67ab5fbc4c6d07ff7c5c50407a9a0a0faf349da3
Author: Pranavan <23...@gmail.com>
Date: 2015-06-11T05:35:58Z
Merge remote-tracking branch 'upstream/master' into CurveFittingGSoC
commit d0c93d0002f18e544f564ac85892a48ac159cfd7
Author: Pranavan <23...@gmail.com>
Date: 2015-06-11T05:38:07Z
Window processor added
commit 0b4bc27c45682eb1da295acfd0ba0cc6af16c196
Author: Pranavan <23...@gmail.com>
Date: 2015-06-11T05:49:48Z
Prediction value calculation method added
commit 5be5828023b8dd3cdc6848e672cf46b5e0edd5d7
Author: Pranavan <23...@gmail.com>
Date: 2015-06-11T11:28:44Z
Merge remote-tracking branch 'upstream/master' into CurveFittingGSoC
commit 16bb7a8507f7dabee33698e1133c9d72e97fcbe6
Author: Pranavan <23...@gmail.com>
Date: 2015-06-11T14:50:52Z
Overrided methods implemented inside CurveFinderWindowProcessor
commit 9633f8288b2533f8aa739f44904aff7224943ca7
Author: Pranavan <23...@gmail.com>
Date: 2015-06-12T03:12:54Z
RulesTaskDelegator
commit 5fa2e658cd003a15b048c134b376fecd527a843f
Author: Pranavan <23...@gmail.com>
Date: 2015-06-12T03:13:07Z
Merge remote-tracking branch 'upstream/master' into CurveFittingGSoC
commit 3a1f134f33dc9ffdf51288d2242bf17029bc7ac1
Author: Pranavan <23...@gmail.com>
Date: 2015-06-13T02:43:58Z
Merge remote-tracking branch 'upstream/master' into CurveFittingGSoC
commit aec73d3bece1550af4206bfd79998b91ced0c1b0
Author: Pranavan <23...@gmail.com>
Date: 2015-06-13T02:44:54Z
Changes
commit c0426f7a86eb2c71687aa4448264475e6a95a514
Author: Pranavan <23...@gmail.com>
Date: 2015-06-14T06:07:11Z
CurveFitting n pairs =====> second order polynomial
commit 5a5811f6a731cf17e0c7002854c9465da237f410
Author: Pranavan <23...@gmail.com>
Date: 2015-06-14T06:13:10Z
Unwanted Log files deleted
commit 736ac3dc2292a53933b0bb0bb7cfa34db7244d5c
Author: Pranavan <23...@gmail.com>
Date: 2015-06-14T17:02:50Z
EMA started
commit 6989b694d39a8d6e5961638406ea5ad2e824b8d6
Author: Pranavan <23...@gmail.com>
Date: 2015-06-14T17:05:16Z
Merge remote-tracking branch 'upstream/master' into CurveFittingGSoC
commit e7dd0be96d64d64c168d1b45db566dc201b4e0c3
Author: Pranavan <23...@gmail.com>
Date: 2015-06-16T13:20:15Z
Merge remote-tracking branch 'upstream/master' into CurveFittingGSoC
commit 2be488e01fdc5bb1481dd65c8f1959fb1d9a09c1
Author: Pranavan <23...@gmail.com>
Date: 2015-06-18T15:59:06Z
Merge remote-tracking branch 'upstream/master' into CurveFittingGSoC
commit 242e4a30b2c6b7881ebbb985a4544b277c646a66
Author: Pranavan <23...@gmail.com>
Date: 2015-06-18T17:45:39Z
Curvefinder siddhi extension added for in flight events
commit db0ee5d13693cb8f0b7de9059bee3887b5932c09
Author: Pranavan <23...@gmail.com>
Date: 2015-06-18T17:49:35Z
Formatted
commit fda60c21259cee660807e74e91f98183c9c9af1a
Author: Pranavan <23...@gmail.com>
Date: 2015-06-21T05:00:41Z
Artifacts for CEP extension added
commit 2cbb276927f05792eb8955d7f0593fea73c4b721
Author: Pranavan <23...@gmail.com>
Date: 2015-06-21T05:09:38Z
Merge remote-tracking branch 'upstream/master' into CurveFittingGSoC
commit 57b19b4702e34f56cc09d8e82ef5745a9692cd9a
Author: Pranavan <23...@gmail.com>
Date: 2015-06-21T06:25:32Z
Stream Manager Updated
commit 62657f8e02080550ed0cbb425f35462acefc0875
Author: Pranavan <23...@gmail.com>
Date: 2015-06-22T11:38:47Z
Merge remote-tracking branch 'upstream/master' into CurveFittingGSoC
commit 5d7a2d31fa483cc60e6e03702d168f0b58d877b8
Author: Pranavan <23...@gmail.com>
Date: 2015-06-22T13:26:52Z
entry added to siddhi.extension
commit 8d7a74417560ddfb8e54a823166c97f0307da665
Author: Pranavan <23...@gmail.com>
Date: 2015-06-23T12:44:06Z
Unwanted Log files deleted
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[GitHub] stratos pull request: GSoC - Curve Fitting
Posted by lahirus <gi...@git.apache.org>.
Github user lahirus commented on a diff in the pull request:
https://github.com/apache/stratos/pull/382#discussion_r36847922
--- Diff: components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/message/processor/health/stat/CurveFinderOfLoadAverageMessageProcessor.java ---
@@ -0,0 +1,44 @@
+package org.apache.stratos.messaging.message.processor.health.stat;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.apache.stratos.messaging.event.health.stat.CurveFinderOfLoadAverageEvent;
+import org.apache.stratos.messaging.message.processor.MessageProcessor;
+import org.apache.stratos.messaging.util.MessagingUtil;
+
+/**
+ * Created by pranavan on 8/9/15.
+ */
+public class CurveFinderOfLoadAverageMessageProcessor extends MessageProcessor{
+ private static final Log log = LogFactory.getLog(CurveFinderOfLoadAverageMessageProcessor.class);
+ private MessageProcessor nextProcessor;
+
+ @Override
+ public void setNext(MessageProcessor nextProcessor) {
+ this.nextProcessor = nextProcessor;
+ }
+
+ @Override
+ public boolean process(String type, String message, Object object) {
+ if (CurveFinderOfLoadAverageEvent.class.getName().equals(type)) {
+
+ // Parse complete message and build event
+ CurveFinderOfLoadAverageEvent event = (CurveFinderOfLoadAverageEvent) MessagingUtil.jsonToObject
+ (message, CurveFinderOfLoadAverageEvent.class);
+
+ // Notify event listeners
+ notifyEventListeners(event);
+
+ if (log.isDebugEnabled()) {
+ log.debug(String.format("%s event processor notified listeners ... ", type));
+ }
+ return true;
+ } else {
+ if (nextProcessor != null) {
+ return nextProcessor.process(type, message, object);
+ } else {
+ throw new RuntimeException(String.format("Failed to process health stat message using available message processors: [type] %s [body] %s", type, message));
--- End diff --
Have custom exceptions, not the RuntimeException
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[GitHub] stratos pull request: GSoC - Curve Fitting
Posted by R-Rajkumar <gi...@git.apache.org>.
Github user R-Rajkumar commented on a diff in the pull request:
https://github.com/apache/stratos/pull/382#discussion_r35234677
--- Diff: extensions/cep/stratos-cep-extension/src/main/java/org/apache/stratos/cep/extension/CurveFinderWindowProcessor.java ---
@@ -0,0 +1,236 @@
+package org.apache.stratos.cep.extension;
+
+import org.apache.log4j.Logger;
+import org.wso2.siddhi.core.config.SiddhiContext;
+import org.wso2.siddhi.core.event.StreamEvent;
+import org.wso2.siddhi.core.event.in.InEvent;
+import org.wso2.siddhi.core.event.in.InListEvent;
+import org.wso2.siddhi.core.event.remove.RemoveEvent;
+import org.wso2.siddhi.core.event.remove.RemoveListEvent;
+import org.wso2.siddhi.core.persistence.ThreadBarrier;
+import org.wso2.siddhi.core.query.QueryPostProcessingElement;
+import org.wso2.siddhi.core.query.processor.window.RunnableWindowProcessor;
+import org.wso2.siddhi.core.query.processor.window.WindowProcessor;
+import org.wso2.siddhi.core.util.collection.queue.scheduler.ISchedulerSiddhiQueue;
+import org.wso2.siddhi.core.util.collection.queue.scheduler.SchedulerSiddhiQueue;
+import org.wso2.siddhi.core.util.collection.queue.scheduler.SchedulerSiddhiQueueGrid;
+import org.wso2.siddhi.query.api.definition.AbstractDefinition;
+import org.wso2.siddhi.query.api.definition.Attribute;
+import org.wso2.siddhi.query.api.definition.Attribute.Type;
+import org.wso2.siddhi.query.api.expression.Expression;
+import org.wso2.siddhi.query.api.expression.Variable;
+import org.wso2.siddhi.query.api.expression.constant.IntConstant;
+import org.wso2.siddhi.query.api.expression.constant.LongConstant;
+import org.wso2.siddhi.query.api.extension.annotation.SiddhiExtension;
+
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+import java.util.concurrent.RejectedExecutionException;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.TimeUnit;
+
+@SiddhiExtension(namespace = "stratos", function = "curveFitting")
+public class CurveFinderWindowProcessor extends WindowProcessor implements RunnableWindowProcessor{
+
+ static final Logger log = Logger.getLogger(CurveFinderWindowProcessor.class);
+ /**
+ * alpha is used as the smoothing constant in exponential moving average
+ */
+ public static final double ALPHA = 0.8000;
--- End diff --
make this ALPHA configurable.
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[GitHub] stratos pull request: GSoC - Curve Fitting
Posted by lahirus <gi...@git.apache.org>.
Github user lahirus commented on a diff in the pull request:
https://github.com/apache/stratos/pull/382#discussion_r35230388
--- Diff: components/org.apache.stratos.autoscaler/src/main/java/org/apache/stratos/autoscaler/rule/RuleTasksDelegator.java ---
@@ -357,6 +378,12 @@ public double getLoadAveragePredictedValue(ClusterInstanceContext clusterInstanc
}
}
+ public double getLoadAveragePredictedValue(){
--- End diff --
Minor fix. Format the code properly with spaces.
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[GitHub] stratos pull request: GSoC - Curve Fitting
Posted by Pranavan135 <gi...@git.apache.org>.
Github user Pranavan135 commented on a diff in the pull request:
https://github.com/apache/stratos/pull/382#discussion_r35286091
--- Diff: extensions/cep/stratos-cep-extension/src/main/java/org/apache/stratos/cep/extension/CurveFitter.java ---
@@ -0,0 +1,41 @@
+package org.apache.stratos.cep.extension;
+
+
+import org.apache.commons.math3.fitting.PolynomialCurveFitter;
+import org.apache.commons.math3.fitting.WeightedObservedPoints;
+import org.apache.log4j.Logger;
+
+public class CurveFitter {
+ private final Logger log = Logger.getLogger(CurveFitter.class);
+ private double[] timeStampValues;
+ private double[] dataValues;
+
+ public CurveFitter(double[] timeStampValues, double[] dataValues){
+ this.timeStampValues = timeStampValues;
+ this.dataValues = dataValues;
+ }
+
+
+ /**
+ *fit the XValues and dataValues into a second order polynomial
+ * @return the coefficient array of the polynomial
+ */
+ public double[] fit(){
+ WeightedObservedPoints weightedObservedPoints = new WeightedObservedPoints();
+
+ for(int i = 0 ; i < timeStampValues.length && i < dataValues.length ; i++){
+ weightedObservedPoints.add(timeStampValues[i], dataValues[i]);
+ }
+
+ /**
+ * create second degree polynomials from the observed points
+ */
+ final PolynomialCurveFitter polynomialCurveFitter = PolynomialCurveFitter.create(2);
+ final double[] coefficients = polynomialCurveFitter.fit(weightedObservedPoints.toList());
+
+ log.info("Coefficients a : " + coefficients[0] + " b : " + coefficients[1] + " c : " + coefficients[2]);
+
+ return coefficients;
+ }
+
+}
--- End diff --
License Header Added
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[GitHub] stratos pull request: GSoC - Curve Fitting
Posted by Pranavan135 <gi...@git.apache.org>.
Github user Pranavan135 closed the pull request at:
https://github.com/apache/stratos/pull/382
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[GitHub] stratos pull request: GSoC - Curve Fitting
Posted by lahirus <gi...@git.apache.org>.
Github user lahirus commented on a diff in the pull request:
https://github.com/apache/stratos/pull/382#discussion_r36823119
--- Diff: components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/event/health/stat/MemberCurveFinderOfLoadAverageEvent.java ---
@@ -0,0 +1,37 @@
+package org.apache.stratos.messaging.event.health.stat;
+
+import org.apache.stratos.messaging.event.Event;
+
+/**
--- End diff --
Remove author tag
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[GitHub] stratos pull request: GSoC - Curve Fitting
Posted by R-Rajkumar <gi...@git.apache.org>.
Github user R-Rajkumar commented on a diff in the pull request:
https://github.com/apache/stratos/pull/382#discussion_r35234774
--- Diff: extensions/cep/stratos-cep-extension/src/main/java/org/apache/stratos/cep/extension/ExponentialMovingAverage.java ---
@@ -0,0 +1,32 @@
+package org.apache.stratos.cep.extension;
+
+/**
+ * class to demonstrate how EMA works
+ */
+public class ExponentialMovingAverage {
+ public Double value;
+
+ /**
+ * smooth the value with respect to the previous value
+ * @param value
+ * @return
+ */
+ public double getAverage(double value){
+ if(this.value == null){
+ this.value = value;
+ return value;
+ }
+
+ /**
+ * calculating smoothed value
+ */
+ double newValue = CurveFinderWindowProcessor.ALPHA * value + (1.0 - CurveFinderWindowProcessor.ALPHA)*value;
+ this.value = newValue;
+
+ return newValue;
+ }
+
+ public Double getValue() {
+ return value;
+ }
+}
--- End diff --
add the licence header to this class
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---
[GitHub] stratos pull request: GSoC - Curve Fitting
Posted by Pranavan135 <gi...@git.apache.org>.
Github user Pranavan135 commented on a diff in the pull request:
https://github.com/apache/stratos/pull/382#discussion_r35286076
--- Diff: components/org.apache.stratos.autoscaler/src/main/java/org/apache/stratos/autoscaler/rule/RuleTasksDelegator.java ---
@@ -357,6 +378,12 @@ public double getLoadAveragePredictedValue(ClusterInstanceContext clusterInstanc
}
}
+ public double getLoadAveragePredictedValue(){
--- End diff --
Resolved
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---
[GitHub] stratos pull request: GSoC - Curve Fitting
Posted by Pranavan135 <gi...@git.apache.org>.
Github user Pranavan135 commented on a diff in the pull request:
https://github.com/apache/stratos/pull/382#discussion_r35286099
--- Diff: extensions/cep/stratos-cep-extension/src/main/java/org/apache/stratos/cep/extension/ExponentialMovingAverage.java ---
@@ -0,0 +1,32 @@
+package org.apache.stratos.cep.extension;
+
+/**
+ * class to demonstrate how EMA works
+ */
+public class ExponentialMovingAverage {
+ public Double value;
+
+ /**
+ * smooth the value with respect to the previous value
+ * @param value
+ * @return
+ */
+ public double getAverage(double value){
+ if(this.value == null){
+ this.value = value;
+ return value;
+ }
+
+ /**
+ * calculating smoothed value
+ */
+ double newValue = CurveFinderWindowProcessor.ALPHA * value + (1.0 - CurveFinderWindowProcessor.ALPHA)*value;
+ this.value = newValue;
+
+ return newValue;
+ }
+
+ public Double getValue() {
+ return value;
+ }
+}
--- End diff --
License Header Added
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[GitHub] stratos pull request: GSoC - Curve Fitting
Posted by R-Rajkumar <gi...@git.apache.org>.
Github user R-Rajkumar commented on a diff in the pull request:
https://github.com/apache/stratos/pull/382#discussion_r35234743
--- Diff: extensions/cep/stratos-cep-extension/src/main/java/org/apache/stratos/cep/extension/CurveFitter.java ---
@@ -0,0 +1,41 @@
+package org.apache.stratos.cep.extension;
+
+
+import org.apache.commons.math3.fitting.PolynomialCurveFitter;
+import org.apache.commons.math3.fitting.WeightedObservedPoints;
+import org.apache.log4j.Logger;
+
+public class CurveFitter {
+ private final Logger log = Logger.getLogger(CurveFitter.class);
+ private double[] timeStampValues;
+ private double[] dataValues;
+
+ public CurveFitter(double[] timeStampValues, double[] dataValues){
+ this.timeStampValues = timeStampValues;
+ this.dataValues = dataValues;
+ }
+
+
+ /**
+ *fit the XValues and dataValues into a second order polynomial
+ * @return the coefficient array of the polynomial
+ */
+ public double[] fit(){
+ WeightedObservedPoints weightedObservedPoints = new WeightedObservedPoints();
+
+ for(int i = 0 ; i < timeStampValues.length && i < dataValues.length ; i++){
+ weightedObservedPoints.add(timeStampValues[i], dataValues[i]);
+ }
+
+ /**
+ * create second degree polynomials from the observed points
+ */
+ final PolynomialCurveFitter polynomialCurveFitter = PolynomialCurveFitter.create(2);
+ final double[] coefficients = polynomialCurveFitter.fit(weightedObservedPoints.toList());
+
+ log.info("Coefficients a : " + coefficients[0] + " b : " + coefficients[1] + " c : " + coefficients[2]);
+
+ return coefficients;
+ }
+
+}
--- End diff --
add the licence header to this class
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[GitHub] stratos pull request: GSoC - Curve Fitting
Posted by lahirus <gi...@git.apache.org>.
Github user lahirus commented on a diff in the pull request:
https://github.com/apache/stratos/pull/382#discussion_r35230422
--- Diff: components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/event/health/stat/CurveFinderOfLoadAverageEvent.java ---
@@ -0,0 +1,54 @@
+/*
+ * 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.event.health.stat;
+
+import org.apache.stratos.messaging.event.Event;
+
+
+public class CurveFinderOfLoadAverageEvent extends Event{
--- End diff --
Minor formatting issue mentioned earlier.
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[GitHub] stratos pull request: GSoC - Curve Fitting
Posted by Pranavan135 <gi...@git.apache.org>.
Github user Pranavan135 commented on the pull request:
https://github.com/apache/stratos/pull/382#issuecomment-135147029
New PR created with updated changes. Closing this one.
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---
[GitHub] stratos pull request: GSoC - Curve Fitting
Posted by Pranavan135 <gi...@git.apache.org>.
Github user Pranavan135 commented on a diff in the pull request:
https://github.com/apache/stratos/pull/382#discussion_r35286080
--- Diff: components/org.apache.stratos.messaging/src/main/java/org/apache/stratos/messaging/event/health/stat/CurveFinderOfLoadAverageEvent.java ---
@@ -0,0 +1,54 @@
+/*
+ * 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.event.health.stat;
+
+import org.apache.stratos.messaging.event.Event;
+
+
+public class CurveFinderOfLoadAverageEvent extends Event{
--- End diff --
Resolved
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