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IGNITE-23406 Change semantic of cluster init REST call
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.../src/main/java/org/apache/ignite/internal/cluster/management/ClusterNodesJoinAwaiter.java
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| @@ -0,0 +1,138 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
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| package org.apache.ignite.internal.cluster.management; | ||
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| import static org.apache.ignite.internal.util.subscription.Publishers.combineLatest; | ||
| import static org.apache.ignite.internal.util.subscription.Publishers.filter; | ||
| import static org.apache.ignite.internal.util.subscription.Publishers.firstItem; | ||
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| import java.util.Collection; | ||
| import java.util.Set; | ||
| import java.util.UUID; | ||
| import java.util.concurrent.CompletableFuture; | ||
| import java.util.concurrent.Flow.Publisher; | ||
| import java.util.concurrent.Flow.Subscription; | ||
| import java.util.stream.Collectors; | ||
| import org.apache.ignite.internal.cluster.management.topology.LogicalTopology; | ||
| import org.apache.ignite.internal.cluster.management.topology.api.LogicalNode; | ||
| import org.apache.ignite.internal.cluster.management.topology.api.LogicalTopologyEventListener; | ||
| import org.apache.ignite.internal.cluster.management.topology.api.LogicalTopologySnapshot; | ||
| import org.apache.ignite.internal.network.ClusterService; | ||
| import org.apache.ignite.internal.network.TopologyEventHandler; | ||
| import org.apache.ignite.internal.network.TopologyService; | ||
| import org.apache.ignite.network.ClusterNode; | ||
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| public class ClusterNodesJoinAwaiter { | ||
| private final ClusterService clusterService; | ||
| private final LogicalTopology logicalTopology; | ||
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| public ClusterNodesJoinAwaiter(ClusterService clusterService, LogicalTopology logicalTopology) { | ||
| this.clusterService = clusterService; | ||
| this.logicalTopology = logicalTopology; | ||
| } | ||
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| public CompletableFuture<Void> awaitAllNodesToJoin() { | ||
| Publisher<Collection<ClusterNode>> physicalTopologyPublisher = physicalTopologyPublisher(clusterService.topologyService()); | ||
| Publisher<LogicalTopologySnapshot> logicalTopologyPublisher = logicalTopologyPublisher(logicalTopology); | ||
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| Publisher<Boolean> allNodesJoinedCluster = | ||
| combineLatest(physicalTopologyPublisher, logicalTopologyPublisher, (physical, logical) -> { | ||
| Set<UUID> physicalNodesSet = physical.stream().map(ClusterNode::id).collect(Collectors.toSet()); | ||
| Set<UUID> logicalNodesSet = logical.nodes().stream().map(ClusterNode::id).collect(Collectors.toSet()); | ||
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| physicalNodesSet.removeAll(logicalNodesSet); | ||
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| return physicalNodesSet.isEmpty(); | ||
| }); | ||
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| return firstItem(filter(allNodesJoinedCluster, it -> it == Boolean.TRUE)) | ||
| .thenApply(unused -> null); | ||
| } | ||
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| private static Publisher<Collection<ClusterNode>> physicalTopologyPublisher(TopologyService topologyService) { | ||
| return subscriber -> { | ||
| TopologyEventHandler eventHandler = new TopologyEventHandler() { | ||
| @Override | ||
| public void onAppeared(ClusterNode member) { | ||
| subscriber.onNext(topologyService.allMembers()); | ||
| } | ||
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| @Override | ||
| public void onDisappeared(ClusterNode member) { | ||
| subscriber.onNext(topologyService.allMembers()); | ||
| } | ||
| }; | ||
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| Subscription subscription = new Subscription() { | ||
| @Override | ||
| public void request(long n) { | ||
| // noop backpressure: our subscription is always hot, because it's based on a listener push semantics. | ||
| } | ||
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| @Override | ||
| public void cancel() { | ||
| topologyService.removeEventHandler(eventHandler); | ||
| } | ||
| }; | ||
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| subscriber.onSubscribe(subscription); | ||
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| topologyService.addEventHandler(eventHandler); | ||
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| subscriber.onNext(topologyService.allMembers()); | ||
| }; | ||
| } | ||
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| private static Publisher<LogicalTopologySnapshot> logicalTopologyPublisher(LogicalTopology logicalTopology) { | ||
| return subscriber -> { | ||
| LogicalTopologyEventListener eventListener = new LogicalTopologyEventListener() { | ||
| @Override | ||
| public void onNodeJoined(LogicalNode joinedNode, LogicalTopologySnapshot newTopology) { | ||
| subscriber.onNext(newTopology); | ||
| } | ||
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| @Override | ||
| public void onNodeLeft(LogicalNode leftNode, LogicalTopologySnapshot newTopology) { | ||
| subscriber.onNext(newTopology); | ||
| } | ||
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| @Override | ||
| public void onTopologyLeap(LogicalTopologySnapshot newTopology) { | ||
| subscriber.onNext(newTopology); | ||
| } | ||
| }; | ||
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| Subscription subscription = new Subscription() { | ||
| @Override | ||
| public void request(long n) { | ||
| // noop: our subscription is always hot, because it's based on a listener push semantics | ||
| } | ||
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| @Override | ||
| public void cancel() { | ||
| logicalTopology.removeEventListener(eventListener); | ||
| } | ||
| }; | ||
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| subscriber.onSubscribe(subscription); | ||
| logicalTopology.addEventListener(eventListener); | ||
| subscriber.onNext(logicalTopology.getLogicalTopology()); | ||
| }; | ||
| } | ||
| } |
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