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authorCNlucius <lukai1@huawei.com>2016-09-13 11:40:12 +0800
committerCNlucius <lukai1@huawei.com>2016-09-13 11:41:53 +0800
commitb731e2f1dd0972409b136aebc7b463dd72c9cfad (patch)
tree5107d7d80c19ad8076c2c97c2b5ef8d1cf3ab903 /framework/src/onos/apps/mlb
parentee93993458266114c29271a481ef9ce7ce621b2a (diff)
ONOSFW-171
O/S-SFC-ONOS scenario documentation Change-Id: I51ae1cf736ea24ab6680f8edca1b2bf5dd598365 Signed-off-by: CNlucius <lukai1@huawei.com>
Diffstat (limited to 'framework/src/onos/apps/mlb')
-rw-r--r--framework/src/onos/apps/mlb/pom.xml45
-rw-r--r--framework/src/onos/apps/mlb/src/main/java/org/onosproject/mlb/MastershipLoadBalancer.java165
-rw-r--r--framework/src/onos/apps/mlb/src/main/java/org/onosproject/mlb/package-info.java20
3 files changed, 0 insertions, 230 deletions
diff --git a/framework/src/onos/apps/mlb/pom.xml b/framework/src/onos/apps/mlb/pom.xml
deleted file mode 100644
index a6548209..00000000
--- a/framework/src/onos/apps/mlb/pom.xml
+++ /dev/null
@@ -1,45 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!--
- ~ Copyright 2015 Open Networking Laboratory
- ~
- ~ Licensed 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.
- -->
-<project xmlns="http://maven.apache.org/POM/4.0.0"
- xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
- xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
- <modelVersion>4.0.0</modelVersion>
-
- <parent>
- <groupId>org.onosproject</groupId>
- <artifactId>onos-apps</artifactId>
- <version>1.4.0-rc1</version>
- <relativePath>../pom.xml</relativePath>
- </parent>
-
- <artifactId>onos-app-mlb</artifactId>
- <packaging>bundle</packaging>
-
- <description>Balances mastership among nodes</description>
-
- <properties>
- <onos.app.name>org.onosproject.mlb</onos.app.name>
- </properties>
-
- <dependencies>
- <dependency>
- <groupId>org.osgi</groupId>
- <artifactId>org.osgi.compendium</artifactId>
- </dependency>
- </dependencies>
-
-</project>
diff --git a/framework/src/onos/apps/mlb/src/main/java/org/onosproject/mlb/MastershipLoadBalancer.java b/framework/src/onos/apps/mlb/src/main/java/org/onosproject/mlb/MastershipLoadBalancer.java
deleted file mode 100644
index bcf4e2ef..00000000
--- a/framework/src/onos/apps/mlb/src/main/java/org/onosproject/mlb/MastershipLoadBalancer.java
+++ /dev/null
@@ -1,165 +0,0 @@
-/*
- * Copyright 2015 Open Networking Laboratory
- *
- * Licensed 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.onosproject.mlb;
-
-import com.google.common.util.concurrent.ListenableScheduledFuture;
-import com.google.common.util.concurrent.ListeningScheduledExecutorService;
-import com.google.common.util.concurrent.MoreExecutors;
-import org.apache.felix.scr.annotations.Activate;
-import org.apache.felix.scr.annotations.Component;
-import org.apache.felix.scr.annotations.Deactivate;
-import org.apache.felix.scr.annotations.Reference;
-import org.apache.felix.scr.annotations.ReferenceCardinality;
-import org.onosproject.cluster.ClusterService;
-import org.onosproject.cluster.LeadershipEvent;
-import org.onosproject.cluster.LeadershipEventListener;
-import org.onosproject.cluster.LeadershipService;
-import org.onosproject.cluster.NodeId;
-import org.onosproject.mastership.MastershipAdminService;
-import org.onosproject.mastership.MastershipEvent;
-import org.onosproject.mastership.MastershipListener;
-import org.onosproject.mastership.MastershipService;
-import org.slf4j.Logger;
-
-import java.util.concurrent.Executors;
-import java.util.concurrent.Future;
-import java.util.concurrent.TimeUnit;
-import java.util.concurrent.atomic.AtomicBoolean;
-import java.util.concurrent.atomic.AtomicReference;
-
-import static org.slf4j.LoggerFactory.getLogger;
-
-/**
- * An app to perform automatic load balancing in response to events. Load balancing events are triggered by any
- * change in mastership and are limited to a frequency of one every 30 seconds, all load balancing is run on an outside
- * thread executor that must only have one thread due to issues that can occur is multiple balancing events occur in
- * parallel.
- */
-@Component(immediate = true)
-public class MastershipLoadBalancer {
-
- private final Logger log = getLogger(getClass());
-
- private static final String REBALANCE_MASTERSHIP = "rebalance/mastership";
-
- private NodeId localId;
-
- private AtomicBoolean isLeader = new AtomicBoolean(false);
-
- private AtomicReference<Future> nextTask = new AtomicReference<>();
-
- @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
- protected MastershipService mastershipService;
-
- @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
- protected MastershipAdminService mastershipAdminService;
-
- @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
- protected LeadershipService leadershipService;
-
- @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
- protected ClusterService clusterService;
-
- private InnerLeadershipListener leadershipListener = new InnerLeadershipListener();
-
- /* This listener is used to trigger balancing for any mastership event which will include switches changing state
- between active and inactive states as well as the same variety of event occurring with ONOS nodes. Must
- use a listenable executor to ensure events are triggered with no frequency greater than once every 30 seconds.
- */
- private InnerMastershipListener mastershipListener = new InnerMastershipListener();
-
- //Ensures that all executions do not interfere with one another (single thread)
- private ListeningScheduledExecutorService executorService = MoreExecutors.
- listeningDecorator(Executors.newSingleThreadScheduledExecutor());
-
- @Activate
- public void activate() {
- mastershipService.addListener(mastershipListener);
- localId = clusterService.getLocalNode().id();
- leadershipService.addListener(leadershipListener);
- leadershipService.runForLeadership(REBALANCE_MASTERSHIP);
- log.info("Started");
- }
-
- @Deactivate
- public void deactivate() {
- mastershipService.removeListener(mastershipListener);
- leadershipService.withdraw(REBALANCE_MASTERSHIP);
- leadershipService.removeListener(leadershipListener);
- cancelBalance();
- executorService.shutdown();
- log.info("Stopped");
- }
-
- private synchronized void processLeadershipChange(NodeId newLeader) {
- if (newLeader == null) {
- return;
- }
- boolean currLeader = newLeader.equals(localId);
- if (isLeader.getAndSet(currLeader) != currLeader) {
- if (currLeader) {
- scheduleBalance();
- } else {
- cancelBalance();
- }
- }
- }
-
- private void scheduleBalance() {
- if (isLeader.get() && nextTask.get() == null) {
-
- ListenableScheduledFuture task = executorService.schedule(mastershipAdminService::balanceRoles, 30,
- TimeUnit.SECONDS);
- task.addListener(() -> {
- log.info("Completed balance roles");
- nextTask.set(null);
- }, MoreExecutors.directExecutor()
- );
- if (!nextTask.compareAndSet(null, task)) {
- task.cancel(false);
- }
- }
- }
-
- private void cancelBalance() {
- Future task = nextTask.getAndSet(null);
- if (task != null) {
- task.cancel(false);
- }
- }
-
- private class InnerMastershipListener implements MastershipListener {
-
- @Override
- public void event(MastershipEvent event) {
- //Sets flag at execution to indicate there is currently a scheduled rebalancing, reverts upon completion
- scheduleBalance();
- }
- }
-
- private class InnerLeadershipListener implements LeadershipEventListener {
- @Override
- public boolean isRelevant(LeadershipEvent event) {
- return REBALANCE_MASTERSHIP.equals(event.subject().topic());
- }
-
- @Override
- public void event(LeadershipEvent event) {
- processLeadershipChange(event.subject().leader());
- }
- }
-} \ No newline at end of file
diff --git a/framework/src/onos/apps/mlb/src/main/java/org/onosproject/mlb/package-info.java b/framework/src/onos/apps/mlb/src/main/java/org/onosproject/mlb/package-info.java
deleted file mode 100644
index a7d83757..00000000
--- a/framework/src/onos/apps/mlb/src/main/java/org/onosproject/mlb/package-info.java
+++ /dev/null
@@ -1,20 +0,0 @@
-/*
- * Copyright 2015 Open Networking Laboratory
- *
- * Licensed 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.
- */
-
-/**
- * Mastership load balancer.
- */
-package org.onosproject.mlb;