| /* |
| * 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.ignite.snippets; |
| |
| import org.apache.ignite.Ignite; |
| import org.apache.ignite.IgniteCheckedException; |
| import org.apache.ignite.IgniteCluster; |
| import org.apache.ignite.IgniteCompute; |
| import org.apache.ignite.Ignition; |
| import org.apache.ignite.cluster.ClusterGroup; |
| import org.apache.ignite.cluster.ClusterState; |
| import org.junit.jupiter.api.Test; |
| |
| public class ClusterAPI { |
| |
| @Test |
| void activate() { |
| //tag::activate[] |
| Ignite ignite = Ignition.start(); |
| |
| ignite.cluster().state(ClusterState.ACTIVE); |
| //end::activate[] |
| ignite.close(); |
| } |
| |
| @Test |
| void changeClusterState() { |
| //tag::change-state[] |
| Ignite ignite = Ignition.start(); |
| |
| ignite.cluster().state(ClusterState.ACTIVE_READ_ONLY); |
| //end::change-state[] |
| ignite.close(); |
| } |
| |
| void changeClusterTag() throws IgniteCheckedException { |
| //tag::cluster-tag[] |
| Ignite ignite = Ignition.start(); |
| |
| // get the cluster id |
| java.util.UUID clusterId = ignite.cluster().id(); |
| |
| // change the cluster tag |
| ignite.cluster().tag("new_tag"); |
| |
| //end::cluster-tag[] |
| ignite.close(); |
| } |
| |
| @Test |
| void enableAutoadjustment() { |
| //tag::enable-autoadjustment[] |
| |
| Ignite ignite = Ignition.start(); |
| |
| ignite.cluster().baselineAutoAdjustEnabled(true); |
| |
| ignite.cluster().baselineAutoAdjustTimeout(30000); |
| |
| //end::enable-autoadjustment[] |
| |
| //tag::disable-autoadjustment[] |
| ignite.cluster().baselineAutoAdjustEnabled(false); |
| //end::disable-autoadjustment[] |
| ignite.close(); |
| } |
| |
| @Test |
| void remoteNodes() { |
| // tag::remote-nodes[] |
| Ignite ignite = Ignition.ignite(); |
| |
| IgniteCluster cluster = ignite.cluster(); |
| |
| // Get compute instance which will only execute |
| // over remote nodes, i.e. all the nodes except for this one. |
| IgniteCompute compute = ignite.compute(cluster.forRemotes()); |
| |
| // Broadcast to all remote nodes and print the ID of the node |
| // on which this closure is executing. |
| compute.broadcast( |
| () -> System.out.println("Hello Node: " + ignite.cluster().localNode().id())); |
| // end::remote-nodes[] |
| } |
| |
| @Test |
| void example(Ignite ignite) { |
| // tag::group-examples[] |
| IgniteCluster cluster = ignite.cluster(); |
| |
| // All nodes on which the cache with name "myCache" is deployed, |
| // either in client or server mode. |
| ClusterGroup cacheGroup = cluster.forCacheNodes("myCache"); |
| |
| // All data nodes responsible for caching data for "myCache". |
| ClusterGroup dataGroup = cluster.forDataNodes("myCache"); |
| |
| // All client nodes that can access "myCache". |
| ClusterGroup clientGroup = cluster.forClientNodes("myCache"); |
| |
| // end::group-examples[] |
| } |
| |
| } |