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/*
* 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 com.alibaba.metrics;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.SortedMap;
public interface IMetricManager {
/**
* Create a {@link Meter} metric in given group, and name.
* if not exist, an instance will be created.
*
* @param group the group of MetricRegistry
* @param name the name of the metric
* @return an instance of meter
*/
Meter getMeter(String group, MetricName name);
/**
* Create a {@link Counter} metric in given group, and name.
* if not exist, an instance will be created.
*
* @param group the group of MetricRegistry
* @param name the name of the metric
* @return an instance of counter
*/
Counter getCounter(String group, MetricName name);
/**
* Create a {@link Histogram} metric in given group, and name.
* if not exist, an instance will be created.
*
* @param group the group of MetricRegistry
* @param name the name of the metric
* @return an instance of histogram
*/
Histogram getHistogram(String group, MetricName name);
/**
* Create a {@link Histogram} metric in given group, name, and type
* if not exist, an instance will be created.
*
* @param group the group of MetricRegistry
* @param name the name of the metric
* @param type the type of the reservoir
* @return an instance of histogram
*/
Histogram getHistogram(String group, MetricName name, ReservoirType type);
/**
* Create a {@link Timer} metric in given group, and name.
* if not exist, an instance will be created.
*
* @param group the group of MetricRegistry
* @param name the name of the metric
* @return an instance of timer
*/
Timer getTimer(String group, MetricName name);
/**
* Create a {@link Timer} metric in given group, name, and type
* if not exist, an instance will be created.
*
* @param group the group of MetricRegistry
* @param name the name of the metric
* @param type the type of the reservoir
* @return an instance of timer
*/
Timer getTimer(String group, MetricName name, ReservoirType type);
/**
* Create a {@link Compass} metric in given group, and name.
* if not exist, an instance will be created.
*
* @param group the group of MetricRegistry
* @param name the name of the metric
* @return an instance of compass
*/
Compass getCompass(String group, MetricName name);
/**
* Create a {@link Compass} metric in given group, name, and type
* if not exist, an instance will be created.
*
* @param group the group of MetricRegistry
* @param name the name of the metric
* @param type the type of the reservoir
* @return an instance of compass
*/
Compass getCompass(String group, MetricName name, ReservoirType type);
/**
* Create a {@link FastCompass} metric in give group, name, and type
* if not exist, an instance will be created.
* @param group the group of MetricRegistry
* @param name the name of the metric
* @return an instance of {@link FastCompass}
*/
FastCompass getFastCompass(String group, MetricName name);
/**
* Create a {@link ClusterHistogram} metric in give group, name, and type
* if not exist, an instance will be created.
* @param group the group of MetricRegistry
* @param name the name of the metric
* @param buckets if the buckets is null, a default bucket will be created.
* @return an instance of {@link ClusterHistogram}
*/
ClusterHistogram getClusterHistogram(String group, MetricName name, long[] buckets);
/**
* Register a customized metric to specified group.
* @param group: the group name of MetricRegistry
* @param metric the metric to register
*/
void register(String group, MetricName name, Metric metric);
/**
* Get a list of group in current MetricManager
* @return a list of group name
*/
List listMetricGroups();
/**
* A global flag to complete disable the metrics feature
* @return true if it is enabled.
*/
boolean isEnabled();
/**
* A global flag to complete disable the metrics feature
*/
void setEnabled(boolean enabled);
/**
* list all metric names by group
* @return a map of metric name set, keyed by group name
*/
Map> listMetricNamesByGroup();
/**
* Get metric registry by group name,
* if not found, null will be returned
* @param group the group name to query
* @return the MetricRegistry that is correspondent to the group
*/
MetricRegistry getMetricRegistryByGroup(String group);
SortedMap getGauges(String group, MetricFilter filter);
SortedMap getCounters(String group, MetricFilter filter);
SortedMap getHistograms(String group, MetricFilter filter);
SortedMap getMeters(String group, MetricFilter filter);
SortedMap getTimers(String group, MetricFilter filter);
SortedMap getCompasses(String group, MetricFilter filter);
SortedMap getFastCompasses(String group, MetricFilter filter);
SortedMap getClusterHistogram(String group, MetricFilter filter);
/**
* A map of metric names to metrics.
*
* @return the metrics
*/
Map getMetrics(String group);
/**
* 返回不同Metric分类，各自保存好的map
*
* @param group
* @return
*/
Map, Map> getCategoryMetrics(String group);
/**
* 返回不同Metric分类，各自保存好的map
*
* @param group
* @param filter
* @return
*/
Map, Map> getCategoryMetrics(String group,
MetricFilter filter);
/**
* return all metrics
*
* @param filter
* @return
*/
Map, Map> getAllCategoryMetrics(MetricFilter filter);
/**
* 清空IMetricManager
*/
void clear();
}
