chesnokoff commented on code in PR #355: URL: https://github.com/apache/ignite-extensions/pull/355#discussion_r3570417268
########## modules/auto-activation-ext/src/main/java/opt/apache/ignite/activation/AutoActivationPluginProvider.java: ########## @@ -0,0 +1,159 @@ +/* + * 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 opt.apache.ignite.activation; + +import java.io.Serializable; +import java.util.Collection; +import java.util.UUID; +import org.apache.ignite.Ignite; +import org.apache.ignite.IgniteCluster; +import org.apache.ignite.IgniteLogger; +import org.apache.ignite.cluster.ClusterNode; +import org.apache.ignite.cluster.ClusterState; +import org.apache.ignite.lang.IgnitePredicate; +import org.apache.ignite.plugin.CachePluginContext; +import org.apache.ignite.plugin.CachePluginProvider; +import org.apache.ignite.plugin.ExtensionRegistry; +import org.apache.ignite.plugin.IgnitePlugin; +import org.apache.ignite.plugin.PluginConfiguration; +import org.apache.ignite.plugin.PluginContext; +import org.apache.ignite.plugin.PluginProvider; +import org.apache.ignite.plugin.PluginValidationException; + +/** + * Activate cluster when specified condition meet + */ +public class AutoActivationPluginProvider implements PluginProvider<PluginConfiguration> { + /** */ + private final IgnitePredicate<Collection<ClusterNode>> condition; + + /** */ + private IgniteLogger logger; + + /** */ + private Ignite grid; + + /** + * @param condition Auto activation condition. + */ + public AutoActivationPluginProvider(IgnitePredicate<Collection<ClusterNode>> condition) { + if (condition == null) + throw new IllegalArgumentException("Auto activation condition must be set"); + + this.condition = condition; + } + + /** {@inheritDoc} */ + @Override public String name() { + return "Auto Activation Plugin"; + } + + /** {@inheritDoc} */ + @Override public <T extends IgnitePlugin> T plugin() { + return (T)new IgnitePlugin() { + // No-op. + }; + } + + /** {@inheritDoc} */ + @Override public String version() { + return "1.0"; + } + + /** {@inheritDoc} */ + @Override public String copyright() { + return ""; + } + + /** {@inheritDoc} */ + @Override public void initExtensions(PluginContext pc, ExtensionRegistry er) { + logger = pc.log(this.getClass()); + grid = pc.grid(); + } + + /** {@inheritDoc} */ + @Override public <T> T createComponent(PluginContext pc, Class<T> type) { + return null; + } + + /** {@inheritDoc} */ + @Override public CachePluginProvider createCacheProvider(CachePluginContext cpc) { + return null; + } + + /** {@inheritDoc} */ + @Override public void start(PluginContext pc) { + // No-op. + } + + /** {@inheritDoc} */ + @Override public void stop(boolean bln) { + // No-op. + } + + /** {@inheritDoc} */ + @Override public void onIgniteStart() { + + IgniteCluster cluster = grid.cluster(); + + if (cluster.state() == ClusterState.ACTIVE) { + if (logger.isInfoEnabled()) + logger.info("Auto activation skipped - cluster already activated"); + + return; + } + + if (cluster.currentBaselineTopology() != null) { + if (logger.isInfoEnabled()) + logger.info("Auto activation skipped - baseline is not empty"); + + return; + } + + if (condition.apply(cluster.nodes())) { Review Comment: Also add test for scenario with client nodes -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
