1 // Copyright 2019, OpenCensus Authors
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
7 // http://www.apache.org/licenses/LICENSE-2.0
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
15 package metricproducer
18 "go.opencensus.io/metric/metricdata"
21 // Producer is a source of metrics.
22 type Producer interface {
23 // Read should return the current values of all metrics supported by this
25 // The returned metrics should be unique for each combination of name and
27 Read() []*metricdata.Metric