diff options
Diffstat (limited to 'src/main/java/org/onap/dcae/commonFunction/DmaapPublishers.java')
-rw-r--r-- | src/main/java/org/onap/dcae/commonFunction/DmaapPublishers.java | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/src/main/java/org/onap/dcae/commonFunction/DmaapPublishers.java b/src/main/java/org/onap/dcae/commonFunction/DmaapPublishers.java new file mode 100644 index 00000000..c86a3742 --- /dev/null +++ b/src/main/java/org/onap/dcae/commonFunction/DmaapPublishers.java @@ -0,0 +1,96 @@ +/*- + * ============LICENSE_START======================================================= + * org.onap.dcaegen2.collectors.ves + * ================================================================================ + * Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved. + * Copyright (C) 2018 Nokia. 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.dcae.commonFunction; + +import com.att.nsa.cambria.client.CambriaBatchingPublisher; +import com.google.common.cache.CacheBuilder; +import com.google.common.cache.CacheLoader; +import com.google.common.cache.LoadingCache; +import com.google.common.cache.RemovalListener; +import com.google.common.cache.RemovalNotification; +import java.io.IOException; +import java.net.MalformedURLException; +import java.security.GeneralSecurityException; +import java.util.List; +import java.util.concurrent.TimeUnit; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +class DmaapPublishers { + + private static Logger log = LoggerFactory.getLogger(DmaapPublishers.class); + private final LoadingCache<String, CambriaBatchingPublisher> publishers; + + private DmaapPublishers( + LoadingCache<String, CambriaBatchingPublisher> publishers) { + this.publishers = publishers; + } + + static DmaapPublishers create() { + return create(new CambriaPublisherFactory()); + } + + static DmaapPublishers create(final CambriaPublisherFactory publisherFactory) { + final LoadingCache<String, CambriaBatchingPublisher> cache = CacheBuilder.<String, CambriaBatchingPublisher>newBuilder() +// .expireAfterAccess(10, TimeUnit.MINUTES) + .removalListener(new RemovalListener<String, CambriaBatchingPublisher>() { + @Override + public void onRemoval(RemovalNotification<String, CambriaBatchingPublisher> notification) { + if (notification.getValue() != null) { + onCacheItemInvalidated(notification.getValue()); + } + } + }) + .build(new CacheLoader<String, CambriaBatchingPublisher>() { + @Override + public CambriaBatchingPublisher load(String streamId) + throws MalformedURLException, GeneralSecurityException { + try { + return publisherFactory.createCambriaPublisher(streamId); + } catch (MalformedURLException | GeneralSecurityException e) { + log.error("CambriaClientBuilders connection reader exception : streamID - " + streamId + " " + + e.getMessage()); + throw e; + } + } + }); + return new DmaapPublishers(cache); + } + + public CambriaBatchingPublisher getByStreamId(String streamId) { + return publishers.getUnchecked(streamId); + } + + public void closeByStreamId(String streamId) { + publishers.invalidate(streamId); + } + + private static void onCacheItemInvalidated(CambriaBatchingPublisher pub) { + try { + final List<?> stuck = pub.close(20, TimeUnit.SECONDS); + if (!stuck.isEmpty()) { + log.error(stuck.size() + " messages unsent"); + } + } catch (InterruptedException | IOException e) { + log.error("Caught Exception on Close event: {}", e); + } + } +} |