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- /*
- * SonarQube
- * Copyright (C) 2009-2021 SonarSource SA
- * mailto:info AT sonarsource DOT com
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 3 of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
- package org.sonar.process.cluster.health;
-
- import com.google.common.collect.ImmutableSet;
- import java.util.HashMap;
- import java.util.Map;
- import java.util.Set;
- import java.util.UUID;
- import java.util.function.Predicate;
- import java.util.stream.Collectors;
- import org.slf4j.Logger;
- import org.slf4j.LoggerFactory;
- import org.sonar.process.cluster.hz.HazelcastMember;
- import org.sonar.process.cluster.hz.HazelcastObjects;
-
- import static java.util.Objects.requireNonNull;
-
- public class SharedHealthStateImpl implements SharedHealthState {
- private static final Logger LOG = LoggerFactory.getLogger(SharedHealthStateImpl.class);
- private static final int TIMEOUT_30_SECONDS = 30 * 1000;
-
- private final HazelcastMember hzMember;
-
- public SharedHealthStateImpl(HazelcastMember hzMember) {
- this.hzMember = hzMember;
- }
-
- public SharedHealthStateImpl() {
- this(null);
- }
-
- @Override
- public void writeMine(NodeHealth nodeHealth) {
- requireNonNull(nodeHealth, "nodeHealth can't be null");
-
- Map<UUID, TimestampedNodeHealth> sqHealthState = readReplicatedMap();
- if (LOG.isTraceEnabled()) {
- LOG.trace("Reading {} and adding {}", new HashMap<>(sqHealthState), nodeHealth);
- }
- sqHealthState.put(hzMember.getUuid(), new TimestampedNodeHealth(nodeHealth, hzMember.getClusterTime()));
- }
-
- @Override
- public void clearMine() {
- Map<UUID, TimestampedNodeHealth> sqHealthState = readReplicatedMap();
- UUID clientUUID = hzMember.getUuid();
- if (LOG.isTraceEnabled()) {
- LOG.trace("Reading {} and clearing for {}", new HashMap<>(sqHealthState), clientUUID);
- }
- sqHealthState.remove(clientUUID);
- }
-
- @Override
- public Set<NodeHealth> readAll() {
- long clusterTime = hzMember.getClusterTime();
- long timeout = clusterTime - TIMEOUT_30_SECONDS;
- Map<UUID, TimestampedNodeHealth> sqHealthState = readReplicatedMap();
- Set<UUID> hzMemberUUIDs = hzMember.getMemberUuids();
- Set<NodeHealth> existingNodeHealths = sqHealthState.entrySet().stream()
- .filter(outOfDate(timeout))
- .filter(ofNonExistentMember(hzMemberUUIDs))
- .map(entry -> entry.getValue().getNodeHealth())
- .collect(Collectors.toSet());
- if (LOG.isTraceEnabled()) {
- LOG.trace("Reading {} and keeping {}", new HashMap<>(sqHealthState), existingNodeHealths);
- }
- return ImmutableSet.copyOf(existingNodeHealths);
- }
-
- private static Predicate<Map.Entry<UUID, TimestampedNodeHealth>> outOfDate(long timeout) {
- return entry -> {
- boolean res = entry.getValue().getTimestamp() > timeout;
- if (!res) {
- LOG.trace("Ignoring NodeHealth of member {} because it is too old", entry.getKey());
- }
- return res;
- };
- }
-
- private static Predicate<Map.Entry<UUID, TimestampedNodeHealth>> ofNonExistentMember(Set<UUID> hzMemberUUIDs) {
- return entry -> {
- boolean res = hzMemberUUIDs.contains(entry.getKey());
- if (!res) {
- LOG.trace("Ignoring NodeHealth of member {} because it is not part of the cluster at the moment", entry.getKey());
- }
- return res;
- };
- }
-
- private Map<UUID, TimestampedNodeHealth> readReplicatedMap() {
- return hzMember.getReplicatedMap(HazelcastObjects.SQ_HEALTH_STATE);
- }
-
- }
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