| /* |
| * Copyright 2018-present Open Networking Foundation |
| * |
| * 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. |
| */ |
| package org.onosproject.openstacktelemetry.impl; |
| |
| import com.google.common.collect.ImmutableSet; |
| import org.onlab.util.KryoNamespace; |
| import org.onosproject.core.ApplicationId; |
| import org.onosproject.core.CoreService; |
| import org.onosproject.openstacktelemetry.api.TelemetryConfigEvent; |
| import org.onosproject.openstacktelemetry.api.TelemetryConfigProvider; |
| import org.onosproject.openstacktelemetry.api.TelemetryConfigStore; |
| import org.onosproject.openstacktelemetry.api.TelemetryConfigStoreDelegate; |
| import org.onosproject.openstacktelemetry.api.config.TelemetryConfig; |
| import org.onosproject.openstacktelemetry.api.config.TelemetryConfig.ConfigType; |
| import org.onosproject.store.AbstractStore; |
| import org.onosproject.store.serializers.KryoNamespaces; |
| import org.onosproject.store.service.ConsistentMap; |
| import org.onosproject.store.service.MapEvent; |
| import org.onosproject.store.service.MapEventListener; |
| import org.onosproject.store.service.Serializer; |
| import org.onosproject.store.service.StorageService; |
| import org.onosproject.store.service.Versioned; |
| import org.osgi.service.component.annotations.Activate; |
| import org.osgi.service.component.annotations.Component; |
| import org.osgi.service.component.annotations.Deactivate; |
| import org.osgi.service.component.annotations.Reference; |
| import org.osgi.service.component.annotations.ReferenceCardinality; |
| import org.slf4j.Logger; |
| |
| import java.util.Set; |
| import java.util.concurrent.ExecutorService; |
| import java.util.stream.Collectors; |
| |
| import static com.google.common.base.Preconditions.checkArgument; |
| import static java.util.concurrent.Executors.newSingleThreadExecutor; |
| import static org.onlab.util.Tools.groupedThreads; |
| import static org.onosproject.openstacktelemetry.api.Constants.OPENSTACK_TELEMETRY_APP_ID; |
| import static org.onosproject.openstacktelemetry.api.TelemetryConfigEvent.Type.CONFIG_ADDED; |
| import static org.onosproject.openstacktelemetry.api.TelemetryConfigEvent.Type.CONFIG_DELETED; |
| import static org.onosproject.openstacktelemetry.api.TelemetryConfigEvent.Type.CONFIG_UPDATED; |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| /** |
| * Manages the inventory of telemetry configurations using a {@code ConsistentMap}. |
| */ |
| @Component(immediate = true, service = TelemetryConfigStore.class) |
| public class DistributedTelemetryConfigStore |
| extends AbstractStore<TelemetryConfigEvent, TelemetryConfigStoreDelegate> |
| implements TelemetryConfigStore { |
| |
| protected final Logger log = getLogger(getClass()); |
| |
| private static final String ERR_NOT_FOUND = " does not exist"; |
| private static final String ERR_DUPLICATE = " already exists"; |
| |
| private static final KryoNamespace SERIALIZER_TELEMETRY_CONFIG = |
| KryoNamespace.newBuilder() |
| .register(KryoNamespaces.API) |
| .register(TelemetryConfigProvider.class) |
| .register(DefaultTelemetryConfigProvider.class) |
| .register(TelemetryConfig.class) |
| .register(TelemetryConfig.ConfigType.class) |
| .register(DefaultTelemetryConfig.class) |
| .build(); |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected CoreService coreService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected StorageService storageService; |
| |
| private final ExecutorService eventExecutor = newSingleThreadExecutor( |
| groupedThreads(this.getClass().getSimpleName(), "event-handler", log)); |
| |
| private final MapEventListener<String, TelemetryConfig> |
| telemetryConfigMapListener = new TelemetryConfigMapListener(); |
| |
| private ConsistentMap<String, TelemetryConfig> telemetryConfigStore; |
| |
| @Activate |
| protected void activate() { |
| ApplicationId appId = coreService.registerApplication(OPENSTACK_TELEMETRY_APP_ID); |
| |
| telemetryConfigStore = storageService.<String, TelemetryConfig>consistentMapBuilder() |
| .withSerializer(Serializer.using(SERIALIZER_TELEMETRY_CONFIG)) |
| .withName("telemetry-config-store") |
| .withApplicationId(appId) |
| .build(); |
| telemetryConfigStore.addListener(telemetryConfigMapListener); |
| |
| log.info("Started"); |
| } |
| |
| @Deactivate |
| protected void deactivate() { |
| telemetryConfigStore.removeListener(telemetryConfigMapListener); |
| eventExecutor.shutdown(); |
| |
| log.info("Stopped"); |
| } |
| |
| @Override |
| public void createTelemetryConfig(TelemetryConfig config) { |
| telemetryConfigStore.compute(config.name(), (name, existing) -> { |
| final String error = config.name() + ERR_DUPLICATE; |
| checkArgument(existing == null, error); |
| return config; |
| }); |
| } |
| |
| @Override |
| public void updateTelemetryConfig(TelemetryConfig config) { |
| telemetryConfigStore.compute(config.name(), (name, existing) -> { |
| final String error = config.name() + ERR_NOT_FOUND; |
| checkArgument(existing != null, error); |
| return config; |
| }); |
| } |
| |
| @Override |
| public TelemetryConfig removeTelemetryConfig(String name) { |
| Versioned<TelemetryConfig> config = telemetryConfigStore.remove(name); |
| return config == null ? null : config.value(); |
| } |
| |
| @Override |
| public TelemetryConfig telemetryConfig(String name) { |
| return telemetryConfigStore.asJavaMap().get(name); |
| } |
| |
| @Override |
| public Set<TelemetryConfig> telemetryConfigs() { |
| return ImmutableSet.copyOf(telemetryConfigStore.asJavaMap().values()); |
| } |
| |
| @Override |
| public Set<TelemetryConfig> telemetryConfigsByType(ConfigType type) { |
| return ImmutableSet.copyOf(telemetryConfigStore.asJavaMap().values() |
| .stream().filter(c -> c.type() == type).collect(Collectors.toSet())); |
| } |
| |
| @Override |
| public void clear() { |
| telemetryConfigStore.clear(); |
| } |
| |
| private class TelemetryConfigMapListener |
| implements MapEventListener<String, TelemetryConfig> { |
| |
| @Override |
| public void event(MapEvent<String, TelemetryConfig> event) { |
| switch (event.type()) { |
| case INSERT: |
| eventExecutor.execute(() -> processTelemetryConfigMapInsertion(event)); |
| break; |
| case UPDATE: |
| eventExecutor.execute(() -> processTelemetryConfigMapUpdate(event)); |
| break; |
| case REMOVE: |
| eventExecutor.execute(() -> processTelemetryConfigMapRemoval(event)); |
| break; |
| default: |
| log.error("Unsupported telemetry config event type"); |
| break; |
| } |
| } |
| |
| private void processTelemetryConfigMapInsertion(MapEvent<String, |
| TelemetryConfig> event) { |
| log.debug("Telemetry config created"); |
| notifyDelegate(new TelemetryConfigEvent( |
| CONFIG_ADDED, event.newValue().value())); |
| } |
| |
| private void processTelemetryConfigMapUpdate(MapEvent<String, |
| TelemetryConfig> event) { |
| log.debug("Telemetry config updated"); |
| notifyDelegate(new TelemetryConfigEvent( |
| CONFIG_UPDATED, event.newValue().value())); |
| } |
| |
| private void processTelemetryConfigMapRemoval(MapEvent<String, |
| TelemetryConfig> event) { |
| log.debug("Telemetry config removed"); |
| notifyDelegate(new TelemetryConfigEvent( |
| CONFIG_DELETED, event.oldValue().value())); |
| } |
| } |
| } |