From 45ead28846e909d2675d2dc933d60d854a958c89 Mon Sep 17 00:00:00 2001 From: Joanna Jeremicz Date: Fri, 12 Mar 2021 18:03:30 +0100 Subject: Incoming events cache - do not load files, which are in progress - Implement singleton cache for events being processed - Add JUnit tests - Bump snapshot version 1.5.1 -> 1.5.2 Issue-ID: DCAEGEN2-2659 Signed-off-by: Joanna Jeremicz Change-Id: I79f32554a8c67d91d0d7b601bc8b060ff4984eab --- .../org/onap/dcaegen2/services/pmmapper/App.java | 21 +++++++ .../dcaegen2/services/pmmapper/model/Event.java | 2 +- .../pmmapper/utils/IncomingEventsCache.java | 68 ++++++++++++++++++++++ .../pmmapper/utils/IncomingEventsCacheTest.java | 63 ++++++++++++++++++++ 4 files changed, 153 insertions(+), 1 deletion(-) create mode 100644 src/main/java/org/onap/dcaegen2/services/pmmapper/utils/IncomingEventsCache.java create mode 100644 src/test/java/org/onap/dcaegen2/services/pmmapper/utils/IncomingEventsCacheTest.java (limited to 'src') diff --git a/src/main/java/org/onap/dcaegen2/services/pmmapper/App.java b/src/main/java/org/onap/dcaegen2/services/pmmapper/App.java index 4583df3..b020837 100644 --- a/src/main/java/org/onap/dcaegen2/services/pmmapper/App.java +++ b/src/main/java/org/onap/dcaegen2/services/pmmapper/App.java @@ -48,6 +48,7 @@ import org.onap.dcaegen2.services.pmmapper.healthcheck.HealthCheckHandler; import org.onap.dcaegen2.services.pmmapper.model.ServerResource; import org.onap.dcaegen2.services.pmmapper.ssl.SSLContextFactory; import org.onap.dcaegen2.services.pmmapper.utils.DataRouterUtils; +import org.onap.dcaegen2.services.pmmapper.utils.IncomingEventsCache; import org.onap.dcaegen2.services.pmmapper.utils.MeasConverter; import org.onap.dcaegen2.services.pmmapper.utils.MeasSplitter; import org.onap.dcaegen2.services.pmmapper.utils.XMLValidator; @@ -80,6 +81,7 @@ public class App { private static final int HTTPS_PORT = 8443; private static final int INITIAL_RECONFIGURATION_PERIOD = 60; private static final int RECONFIGURATION_PERIOD = 60; + private static final IncomingEventsCache eventsCache = IncomingEventsCache.INSTANCE; private static Path templates = Paths.get("/opt/app/pm-mapper/etc/templates/"); private static Path schemas = Paths.get("/opt/app/pm-mapper/etc/schemas/"); @@ -139,6 +141,8 @@ public class App { this.flux.onBackpressureDrop(App::handleBackPressure) .doOnNext(App::receiveRequest) + .filter(event -> !isCached(event.getPublishIdentity())) + .doOnNext(App::addToCache) .limitRate(processingConfig.getLimitRate()) .parallel(processingThreads) .runOn(Schedulers.newParallel("Thread", processingThreads), PREFETCH_ONE_PER_THREAD) @@ -204,6 +208,14 @@ public class App { } } + private boolean isCached(String id) { + boolean isPresent = eventsCache.contains(id); + if(isPresent) { + logger.unwrap().info("Skipping. This event is already waiting in cache to be processed: " + id); + } + return isPresent; + } + public static void main(String[] args) throws EnvironmentConfigException { FilesProcessingConfig processingConfig = new FilesProcessingConfig(new EnvironmentReader()); new App(templates, schemas, HTTP_PORT, HTTPS_PORT, new ConfigHandler(), processingConfig).start(); @@ -280,6 +292,7 @@ public class App { public static void sendEventProcessed(MapperConfig config, Event event) { try { DataRouterUtils.processEvent(config, event); + eventsCache.remove(event.getPublishIdentity()); } catch (ProcessEventException exception) { logger.unwrap().error("Process event failure", exception); } @@ -299,6 +312,14 @@ public class App { .unDispatch(); } + /** + * Adds received event to cache + * @param event to be cached. + */ + public static void addToCache(@NonNull Event event) { + eventsCache.add(event.getPublishIdentity()); + } + /** * Takes the exchange from an event, responds with a 200 and un-dispatches the exchange. * @param event to be received. diff --git a/src/main/java/org/onap/dcaegen2/services/pmmapper/model/Event.java b/src/main/java/org/onap/dcaegen2/services/pmmapper/model/Event.java index 57d9570..3bd4a37 100644 --- a/src/main/java/org/onap/dcaegen2/services/pmmapper/model/Event.java +++ b/src/main/java/org/onap/dcaegen2/services/pmmapper/model/Event.java @@ -1,6 +1,6 @@ /*- * ============LICENSE_START======================================================= - * Copyright (C) 2020 Nordix Foundation. + * Copyright (C) 2020 Nordix Foundation. * ================================================================================ * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. diff --git a/src/main/java/org/onap/dcaegen2/services/pmmapper/utils/IncomingEventsCache.java b/src/main/java/org/onap/dcaegen2/services/pmmapper/utils/IncomingEventsCache.java new file mode 100644 index 0000000..677a3c3 --- /dev/null +++ b/src/main/java/org/onap/dcaegen2/services/pmmapper/utils/IncomingEventsCache.java @@ -0,0 +1,68 @@ +/*- + * ============LICENSE_START======================================================= + * Copyright (C) 2021 Nokia. + * ================================================================================ + * 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. + * + * SPDX-License-Identifier: Apache-2.0 + * ============LICENSE_END========================================================= + */ + +package org.onap.dcaegen2.services.pmmapper.utils; + +import java.util.HashSet; +import java.util.Set; +import java.util.concurrent.ConcurrentHashMap; + +public enum IncomingEventsCache { + INSTANCE; + + private Set eventsIds = ConcurrentHashMap.newKeySet(); + + /** + * Gets thread safe, single instance of this enum + * @return the single instance of cache + */ + public IncomingEventsCache getInstance() { + return INSTANCE; + } + + /** + * Adds publishIdentity of an event to cache + * @param id to be added to cache + */ + public void add(String id) { + eventsIds.add(id); + } + + /** + * Remove publishIdentity of an event from cache + * @param id to be removed from cache + */ + public void remove(String id) { + eventsIds.remove(id); + } + + /** + * Checks if the cache contains a publishIdentity + * @param id to be found in cache + * @return true when the id exists, false otherwise + */ + public boolean contains(String id) { + return eventsIds.contains(id); + } + + Set getCachedEvents() { + return new HashSet<>(eventsIds); + } +} diff --git a/src/test/java/org/onap/dcaegen2/services/pmmapper/utils/IncomingEventsCacheTest.java b/src/test/java/org/onap/dcaegen2/services/pmmapper/utils/IncomingEventsCacheTest.java new file mode 100644 index 0000000..6a77e0f --- /dev/null +++ b/src/test/java/org/onap/dcaegen2/services/pmmapper/utils/IncomingEventsCacheTest.java @@ -0,0 +1,63 @@ +/*- + * ============LICENSE_START======================================================= + * Copyright (C) 2021 Nokia. + * ================================================================================ + * 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. + * + * SPDX-License-Identifier: Apache-2.0 + * ============LICENSE_END========================================================= + */ + +package org.onap.dcaegen2.services.pmmapper.utils; + +import org.junit.After; +import org.junit.Test; + +import static org.junit.jupiter.api.Assertions.assertEquals; +import static org.junit.jupiter.api.Assertions.assertTrue; + +public class IncomingEventsCacheTest { + + private static final String id1 = "123.dmaap-dr-node"; + private static final String id2 = "987.dmaap-dr-node"; + + @After + public void resetCache() { + IncomingEventsCache cache = IncomingEventsCache.INSTANCE; + for(String id: cache.getCachedEvents()) { + cache.remove(id); + } + } + + @Test + public void shouldContainEventAfterAddingItToCache() { + IncomingEventsCache eventsCache = IncomingEventsCache.INSTANCE; + eventsCache.add(id1); + assertEquals(1, IncomingEventsCache.INSTANCE.getCachedEvents().size()); + assertTrue(IncomingEventsCache.INSTANCE.getCachedEvents().contains(id1)); + } + + @Test + public void shouldRemoveEventFromCache() { + IncomingEventsCache eventsCache = IncomingEventsCache.INSTANCE; + + assertEquals(0, IncomingEventsCache.INSTANCE.getCachedEvents().size()); + eventsCache.add(id1); + eventsCache.add(id1); + eventsCache.add(id2); + assertEquals(2, IncomingEventsCache.INSTANCE.getCachedEvents().size()); + eventsCache.remove(id1); + assertEquals(1, IncomingEventsCache.INSTANCE.getCachedEvents().size()); + assertTrue(IncomingEventsCache.INSTANCE.getCachedEvents().contains(id2)); + } +} -- cgit 1.2.3-korg