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/*-
* ============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.metricservice.metric;
import java.util.HashMap;
/**
*
* a measure of system parameter at the current moment. Each metric is identified by name.
* In general case, a metric just reflects its (almost) real-time value and is not responsible for maintaining its historical data.
* One that needs to build series of a metric values for statistical/analytic purposes should query the value and store it for further processing.
* Metrics can be of different types - counters, timers etc.
* The initial service implementation supports simple (flat) counters only.
*
*/
public interface Metric {
String name();
void reset();
MetricType type();
/**
* This API will be used to get all the running Metrics Output.
* @return HashMap <String,String> in which
* the First String(Key) will be the name of the KPI property
* and another String(Value of the Key) will be the Value of
* that property for that KPI
*/
HashMap<String,String> getMetricsOutput();
/**
* Return last modified date for KPI in string format
* @return - last modified date for KPI
*/
String getLastModified();
}
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