summaryrefslogtreecommitdiffstats
path: root/sdnr/wt/common/src
diff options
context:
space:
mode:
Diffstat (limited to 'sdnr/wt/common/src')
-rw-r--r--sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/threading/GenericRunnableFactory.java32
-rw-r--r--sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/threading/GenericRunnableFactoryCallback.java27
-rw-r--r--sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/threading/KeyBasedThreadpool.java93
3 files changed, 152 insertions, 0 deletions
diff --git a/sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/threading/GenericRunnableFactory.java b/sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/threading/GenericRunnableFactory.java
new file mode 100644
index 000000000..c163facbb
--- /dev/null
+++ b/sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/threading/GenericRunnableFactory.java
@@ -0,0 +1,32 @@
+/*
+ * ============LICENSE_START=======================================================
+ * ONAP : ccsdk features
+ * ================================================================================
+ * Copyright (C) 2020 highstreet technologies GmbH 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.features.sdnr.wt.common.threading;
+
+public abstract class GenericRunnableFactory<T,S> {
+
+ public GenericRunnableFactory() {
+ }
+
+ public Runnable create(S arg, GenericRunnableFactoryCallback<T> callback) {
+ return null;
+ }
+}
diff --git a/sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/threading/GenericRunnableFactoryCallback.java b/sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/threading/GenericRunnableFactoryCallback.java
new file mode 100644
index 000000000..bd0ce1eec
--- /dev/null
+++ b/sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/threading/GenericRunnableFactoryCallback.java
@@ -0,0 +1,27 @@
+/*
+ * ============LICENSE_START=======================================================
+ * ONAP : ccsdk features
+ * ================================================================================
+ * Copyright (C) 2020 highstreet technologies GmbH 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.features.sdnr.wt.common.threading;
+
+public interface GenericRunnableFactoryCallback<T> {
+
+ void onFinish(T key);
+}
diff --git a/sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/threading/KeyBasedThreadpool.java b/sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/threading/KeyBasedThreadpool.java
new file mode 100644
index 000000000..f41a9038f
--- /dev/null
+++ b/sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/threading/KeyBasedThreadpool.java
@@ -0,0 +1,93 @@
+/*
+ * ============LICENSE_START=======================================================
+ * ONAP : ccsdk features
+ * ================================================================================
+ * Copyright (C) 2020 highstreet technologies GmbH 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.features.sdnr.wt.common.threading;
+
+import java.util.AbstractMap.SimpleEntry;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map.Entry;
+import java.util.Queue;
+import java.util.concurrent.ConcurrentLinkedQueue;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+
+/**
+ * Threadpool for running n instances per key T
+ *
+ * @author jack
+ *
+ * @param <T>
+ * @param <S>
+ */
+public class KeyBasedThreadpool<T, S> implements GenericRunnableFactoryCallback<T> {
+
+ private final Queue<Entry<T, S>> queue;
+ private final List<T> runningKeys;
+ private final int keyPoolSize;
+ private final GenericRunnableFactory<T, S> factory;
+ private final ExecutorService executor;
+
+ /**
+ *
+ * @param poolSize overall maximum amount of threads
+ * @param keyPoolSize amount of threads per key
+ * @param runner runnable to start
+ */
+ public KeyBasedThreadpool(int poolSize, int keyPoolSize, GenericRunnableFactory<T, S> factory) {
+ this.queue = new ConcurrentLinkedQueue<>();
+ this.keyPoolSize = keyPoolSize;
+ this.factory = factory;
+ this.executor = Executors.newFixedThreadPool(poolSize);
+ this.runningKeys = new ArrayList<>();
+ }
+
+ public void execute(T key, S arg) {
+ if (this.isKeyPoolSizeReached(key)) {
+ queue.add(new SimpleEntry<>(key, arg));
+ } else {
+ this.runningKeys.add(key);
+ this.executor.execute(this.factory.create(arg, this));
+ }
+
+ }
+
+ private void executeNext() {
+ Entry<T, S> entry = this.queue.peek();
+ if (!this.isKeyPoolSizeReached(entry.getKey())) {
+ this.queue.poll();
+ this.runningKeys.add(entry.getKey());
+ this.executor.execute(this.factory.create(entry.getValue(), this));
+ }
+ }
+
+ private boolean isKeyPoolSizeReached(T key) {
+ return this.runningKeys.stream().filter(e -> e == key).count() >= this.keyPoolSize;
+ }
+
+ @Override
+ public void onFinish(T key) {
+ this.runningKeys.remove(key);
+ this.executeNext();
+ }
+
+
+}