/
filtermetric.go
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/
filtermetric.go
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// Copyright The OpenTelemetry Authors
//
// 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 filtermetric
import (
"go.opentelemetry.io/collector/consumer/pdata"
"go.opentelemetry.io/collector/internal/processor/filterset"
)
// Matcher matches metrics by metric properties against prespecified values for each property.
type Matcher struct {
nameFilters filterset.FilterSet
}
// NewMatcher constructs a metric Matcher that can be used to match metrics by metric properties.
// For each supported metric property, the Matcher accepts a set of prespecified values. An incoming metric
// matches on a property if the property matches at least one of the prespecified values.
// A metric only matches if every metric property configured on the Matcher is a match.
//
// The metric Matcher supports matching by the following metric properties:
// - Metric name
func NewMatcher(config *MatchProperties) (Matcher, error) {
nameFS, err := filterset.CreateFilterSet(config.MetricNames, &config.Config)
if err != nil {
return Matcher{}, err
}
return Matcher{
nameFilters: nameFS,
}, nil
}
// MatchMetric matches a metric using the metric properties configured on the Matcher.
// A metric only matches if every metric property configured on the Matcher is a match.
func (m *Matcher) MatchMetric(metric pdata.Metric) bool {
return m.nameFilters.Matches(metric.Name())
}