1 files changed, 60 insertions, 0 deletions
diff --git a/framework/src/onos/utils/misc/src/main/java/org/onlab/metrics/MetricsComponent.java b/framework/src/onos/utils/misc/src/main/java/org/onlab/metrics/MetricsComponent.java
new file mode 100644
index 00000000..cc8fe83c
--- /dev/null
+++ b/framework/src/onos/utils/misc/src/main/java/org/onlab/metrics/MetricsComponent.java
@@ -0,0 +1,60 @@
+/*
+ * Copyright 2014 Open Networking Laboratory
+ *
+ * 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.onlab.metrics;
+
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ConcurrentMap;
+
+/**
+ * Components to register for metrics.
+ */
+public class MetricsComponent implements MetricsComponentRegistry {
+    private final String name;
+
+    /**
+     * Registry to hold the Features defined in this Component.
+     */
+    private final ConcurrentMap<String, MetricsFeature> featuresRegistry =
+            new ConcurrentHashMap<>();
+
+    /**
+     * Constructs a component from a name.
+     *
+     * @param newName name of the component
+     */
+    MetricsComponent(final String newName) {
+        name = newName;
+    }
+
+    @Override
+    public String getName() {
+        return name;
+    }
+
+    @Override
+    public MetricsFeature registerFeature(final String featureName) {
+        MetricsFeature feature = featuresRegistry.get(featureName);
+        if (feature == null) {
+            final MetricsFeature createdFeature =
+                new MetricsFeature(featureName);
+            feature = featuresRegistry.putIfAbsent(featureName, createdFeature);
+            if (feature == null) {
+                feature = createdFeature;
+            }
+        }
+        return feature;
+    }
+}