Github user pravsingh commented on a diff in the pull request:
https://github.com/apache/zookeeper/pull/582#discussion_r205903511
--- Diff: src/java/main/org/apache/zookeeper/metrics/MetricsProvider.java
---
@@ -0,0 +1,64 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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.apache.zookeeper.metrics;
+
+import java.util.Properties;
+
+/**
+ * A MetricsProvider is a system which collects Metrics and publishes
current values to external facilities.
+ *
+ * The system will create an instance of the configured class using the
default constructor, which must be public.<br>
+ * After the instantiation of the provider, the system will call {@link
#configure(java.util.Map) } in order to provide configuration,
+ * and then when the system is ready to work it will call {@link #start()
}.
+ * <br>
+ * Providers can be used both on ZooKeeper servers and on ZooKeeper
clients.
+ */
+public interface MetricsProvider {
+
+ /**
+ * Configure the provider.
+ *
+ * @param configuration the configuration.
+ *
+ * @throws MetricsProviderLifeCycleException in case of invalid
configuration.
+ */
+ public void configure(Properties configuration) throws
MetricsProviderLifeCycleException;
--- End diff --
no public
---
