diff options
Diffstat (limited to 'plugins/grToolkit/provider/src/main/java/org/onap/ccsdk/sli/plugins/grtoolkit/resolver/ThreeNodeHealthResolver.java')
| -rw-r--r-- | plugins/grToolkit/provider/src/main/java/org/onap/ccsdk/sli/plugins/grtoolkit/resolver/ThreeNodeHealthResolver.java | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/plugins/grToolkit/provider/src/main/java/org/onap/ccsdk/sli/plugins/grtoolkit/resolver/ThreeNodeHealthResolver.java b/plugins/grToolkit/provider/src/main/java/org/onap/ccsdk/sli/plugins/grtoolkit/resolver/ThreeNodeHealthResolver.java new file mode 100644 index 000000000..2180b2bf8 --- /dev/null +++ b/plugins/grToolkit/provider/src/main/java/org/onap/ccsdk/sli/plugins/grtoolkit/resolver/ThreeNodeHealthResolver.java @@ -0,0 +1,162 @@ +/*- + * ============LICENSE_START======================================================= + * openECOMP : SDN-C + * ================================================================================ + * Copyright (C) 2019 AT&T Intellectual Property. All rights + * reserved. + * ================================================================================ + * 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. + * ============LICENSE_END========================================================= + */ + +package org.onap.ccsdk.sli.plugins.grtoolkit.resolver; + +import org.onap.ccsdk.sli.core.dblib.DbLibService; +import org.onap.ccsdk.sli.plugins.grtoolkit.data.AdminHealth; +import org.onap.ccsdk.sli.plugins.grtoolkit.data.ClusterActor; +import org.onap.ccsdk.sli.plugins.grtoolkit.data.ClusterHealth; +import org.onap.ccsdk.sli.plugins.grtoolkit.data.DatabaseHealth; +import org.onap.ccsdk.sli.plugins.grtoolkit.data.FailoverStatus; +import org.onap.ccsdk.sli.plugins.grtoolkit.data.Health; +import org.onap.ccsdk.sli.plugins.grtoolkit.data.SiteHealth; + +import org.opendaylight.yang.gen.v1.org.onap.ccsdk.sli.plugins.gr.toolkit.rev180926.FailoverInput; + +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.util.Collections; +import java.util.List; +import java.util.Map; +import java.util.Properties; + +/** + * Implementation of {@code HealthResolver} for a three node controller + * architecture, where all nodes are located within the same data center or + * geographic region. The nodes are assumed to be in an Active/Active/Active + * voting configuration. + * + * @author Anthony Haddox + * @see HealthResolver + */ +public class ThreeNodeHealthResolver extends HealthResolver { + private final Logger log = LoggerFactory.getLogger(ThreeNodeHealthResolver.class); + + /** + * Constructs the health resolver used by the {@code GrToolkitProvider} to + * determine the health of the application components. + * + * @param map a HashMap containing all of the nodes in the akka cluster + * @param properties the properties passed ino the provider + * @param dbLib a reference to the {@code DbLibService} of the provider + * @see HealthResolver + * @see org.onap.ccsdk.sli.plugins.grtoolkit.GrToolkitProvider + */ + public ThreeNodeHealthResolver(Map<String, ClusterActor> map, Properties properties, DbLibService dbLib) { + super(map, properties, dbLib); + resolveSites(); + } + + /** + * Implementation of {@code getClusterHealth()}. Uses the + * {@code ShardResolver} to gather health information about the controller. + * If 2 of 3 members are healthy, the cluster is deemed healthy. + * + * @return an {@code ClusterHealth} object with health of the akka cluster + * @see org.onap.ccsdk.sli.plugins.grtoolkit.GrToolkitProvider + * @see HealthResolver + * @see ClusterHealth + * @see ShardResolver + */ + @Override + public ClusterHealth getClusterHealth() { + log.info("getClusterHealth(): Getting cluster health..."); + shardResolver.getControllerHealth(memberMap); + long healthyMembers = memberMap.values().stream().filter(member -> member.isUp() && ! member.isUnreachable()).count(); + return (healthyMembers > 1) ? new ClusterHealth().withHealth(Health.HEALTHY) : new ClusterHealth().withHealth(Health.FAULTY); + } + + /** + * Implementation of {@code getSiteHealth()}. Uses the results from + * {@code getAdminHealth}, {@code getDatabaseHealth}, and + * {@code getClusterHealth} to determine the health of the site. If all + * components are healthy, the site is healthy. + * + * @return a List of {@code SiteHealth} objects with health of the site + * @see org.onap.ccsdk.sli.plugins.grtoolkit.GrToolkitProvider + * @see HealthResolver + * @see SiteHealth + * @see ShardResolver + */ + @Override + public List<SiteHealth> getSiteHealth() { + log.info("getSiteHealth(): Getting site health..."); + AdminHealth adminHealth = getAdminHealth(); + DatabaseHealth databaseHealth = getDatabaseHealth(); + ClusterHealth clusterHealth = getClusterHealth(); + SiteHealth siteHealth = new SiteHealth() + .withAdminHealth(adminHealth) + .withDatabaseHealth(databaseHealth) + .withClusterHealth(clusterHealth) + .withRole("ACTIVE") + .withId(getSiteIdentifier()); + log.info("getSiteHealth(): Admin Health: {}", adminHealth.getHealth().toString()); + log.info("getSiteHealth(): Database Health: {}", databaseHealth.getHealth().toString()); + log.info("getSiteHealth(): Cluster Health: {}", clusterHealth.getHealth().toString()); + if(isHealthy(adminHealth.getHealth()) && isHealthy(databaseHealth.getHealth()) && isHealthy(clusterHealth.getHealth())) { + siteHealth.setHealth(Health.HEALTHY); + } + + return Collections.singletonList(siteHealth); + } + + /** + * Implementation of {@code tryFailover()}. No controller-level failover + * options are available in a three node architecture, so 400 Bad Request + * is returned, and no action is taken. + * + * @return an {@code SiteHealth} object with health of the site + * @see org.onap.ccsdk.sli.plugins.grtoolkit.GrToolkitProvider + * @see HealthResolver + * @see FailoverStatus + * @see FailoverInput + */ + @Override + public FailoverStatus tryFailover(FailoverInput input) { + log.info("tryFailover(): Failover not supported in the current configuration."); + return new FailoverStatus().withStatusCode(400).withMessage("Failover not supported in current configuration."); + } + + /** + * Implementation of {@code resolveSites()}. Calls + * {@code resolveSiteForMember()} to resolve which site a member belongs to. + * + * @see HealthResolver + */ + @Override + public void resolveSites() { + log.info("Map contains {} entries", memberMap.size()); + memberMap.forEach((key, value) -> resolveSiteForMember(value)); + } + + /** + * Resolves which site a member belongs to. Since this is a three node + * co-located architecture, it is defaulted to <i>Site 1</i>. + * + * @see HealthResolver + */ + private void resolveSiteForMember(ClusterActor actor) { + actor.setSite("Site 1"); + log.info("resolveSiteForMember(): {} belongs to {}", actor.getNode(), actor.getSite()); + } +} |