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tag_filter.go
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tag_filter.go
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// Copyright (c) 2019 The Jaeger Authors.
// Copyright (c) 2017 Uber Technologies, Inc.
//
// 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 dbmodel
import (
"github.com/jaegertracing/jaeger/model"
)
// TagFilter filters out any tags that should not be indexed.
type TagFilter interface {
FilterProcessTags(span *model.Span, processTags model.KeyValues) model.KeyValues
FilterTags(span *model.Span, tags model.KeyValues) model.KeyValues
FilterLogFields(span *model.Span, logFields model.KeyValues) model.KeyValues
}
// ChainedTagFilter applies multiple tag filters in serial fashion.
type ChainedTagFilter []TagFilter
// NewChainedTagFilter creates a TagFilter from the variadic list of passed TagFilter.
func NewChainedTagFilter(filters ...TagFilter) ChainedTagFilter {
return filters
}
// FilterProcessTags calls each FilterProcessTags.
func (tf ChainedTagFilter) FilterProcessTags(span *model.Span, processTags model.KeyValues) model.KeyValues {
for _, f := range tf {
processTags = f.FilterProcessTags(span, processTags)
}
return processTags
}
// FilterTags calls each FilterTags
func (tf ChainedTagFilter) FilterTags(span *model.Span, tags model.KeyValues) model.KeyValues {
for _, f := range tf {
tags = f.FilterTags(span, tags)
}
return tags
}
// FilterLogFields calls each FilterLogFields
func (tf ChainedTagFilter) FilterLogFields(span *model.Span, logFields model.KeyValues) model.KeyValues {
for _, f := range tf {
logFields = f.FilterProcessTags(span, logFields)
}
return logFields
}
// DefaultTagFilter returns a filter that retrieves all tags from span.Tags, span.Logs, and span.Process.
var DefaultTagFilter = tagFilterImpl{}
type tagFilterImpl struct{}
func (f tagFilterImpl) FilterProcessTags(span *model.Span, processTags model.KeyValues) model.KeyValues {
return processTags
}
func (f tagFilterImpl) FilterTags(span *model.Span, tags model.KeyValues) model.KeyValues {
return tags
}
func (f tagFilterImpl) FilterLogFields(span *model.Span, logFields model.KeyValues) model.KeyValues {
return logFields
}