1 files changed, 101 insertions, 0 deletions
diff --git a/appc-dispatcher/appc-dispatcher-common/execution-queue-management-lib/src/main/java/org/onap/appc/executionqueue/helper/Util.java b/appc-dispatcher/appc-dispatcher-common/execution-queue-management-lib/src/main/java/org/onap/appc/executionqueue/helper/Util.java
new file mode 100644
index 000000000..58279e8a7
--- /dev/null
+++ b/appc-dispatcher/appc-dispatcher-common/execution-queue-management-lib/src/main/java/org/onap/appc/executionqueue/helper/Util.java
@@ -0,0 +1,101 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP : APPC
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Copyright (C) 2017 Amdocs
+ * =============================================================================
+ * 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.
+ * 
+ * ECOMP is a trademark and service mark of AT&T Intellectual Property.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.appc.executionqueue.helper;
+
+import com.att.eelf.configuration.EELFLogger;
+import com.att.eelf.configuration.EELFManager;
+import org.onap.appc.configuration.Configuration;
+import org.onap.appc.configuration.ConfigurationFactory;
+import org.onap.appc.executionqueue.impl.QueueManager;
+
+import java.util.concurrent.Executors;
+import java.util.concurrent.ThreadFactory;
+import java.util.concurrent.atomic.AtomicInteger;
+
+public class Util {
+
+    private final EELFLogger logger = EELFManager.getInstance().getLogger(Util.class);
+    private final int default_queue_size = 10;
+    private final int default_threadpool_size = 10;
+    private final String queue_size_key = "appc.dispatcher.executionqueue.backlog.size";
+    private final String threadpool_size_key = "appc.dispatcher.executionqueue.threadpool.size";
+
+    private Configuration configuration;
+
+    /**
+     * Initialization.
+     * <p>Used by blueprint.
+     */
+    public void init() {
+
+        configuration = ConfigurationFactory.getConfiguration();
+    }
+
+    public int getExecutionQueueSize() {
+        String sizeStr = configuration.getProperty(queue_size_key, String.valueOf(default_queue_size));
+
+        int size = default_queue_size;
+        try {
+            size = Integer.parseInt(sizeStr);
+        } catch (NumberFormatException e) {
+            logger.error("Error while parse key:" + queue_size_key + " got from configuration " + e.getMessage(), e);
+        }
+
+        return size;
+    }
+
+    public int getThreadPoolSize() {
+        String sizeStr = configuration.getProperty(threadpool_size_key, String.valueOf(default_threadpool_size));
+
+        int size = default_threadpool_size;
+        try {
+            size = Integer.parseInt(sizeStr);
+        } catch (NumberFormatException e) {
+            logger.error("Error while parse key:" + threadpool_size_key + " got from configuration "
+                + e.getMessage(), e);
+        }
+
+        return size;
+    }
+
+    public ThreadFactory getThreadFactory(final boolean isDaemon, final String threadNamePrefix) {
+        return new ThreadFactory() {
+            private final String THREAD_NAME_PATTERN = "%s-%d";
+            private final ThreadFactory factory = Executors.defaultThreadFactory();
+            private final AtomicInteger counter = new AtomicInteger();
+
+            public Thread newThread(Runnable r) {
+                Thread t = factory.newThread(r);
+                t.setDaemon(isDaemon);
+                if (threadNamePrefix != null && !threadNamePrefix.isEmpty()) {
+                    final String threadName = String.format(THREAD_NAME_PATTERN, threadNamePrefix, counter
+                        .incrementAndGet());
+                    t.setName(threadName);
+                }
+                return t;
+            }
+        };
+    }
+}