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prune_tags.go
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prune_tags.go
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// Copyright 2023 The Kelemetry 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 tfstep
import (
"fmt"
"strings"
"github.com/jaegertracing/jaeger/model"
tfconfig "github.com/kubewharf/kelemetry/pkg/frontend/tf/config"
tftree "github.com/kubewharf/kelemetry/pkg/frontend/tf/tree"
"github.com/kubewharf/kelemetry/pkg/manager"
"github.com/kubewharf/kelemetry/pkg/util/zconstants"
)
func init() {
manager.Global.ProvideListImpl(
"tf-step/replace-name-visitor",
manager.Ptr(&tfconfig.VisitorStep[ReplaceNameVisitor]{}),
&manager.List[tfconfig.RegisteredStep]{},
)
manager.Global.ProvideListImpl(
"tf-step/prune-tags-visitor",
manager.Ptr(&tfconfig.VisitorStep[PruneTagsVisitor]{}),
&manager.List[tfconfig.RegisteredStep]{},
)
}
type ReplaceNameVisitor struct{}
func (ReplaceNameVisitor) Kind() string { return "ReplaceNameVisitor" }
func (visitor ReplaceNameVisitor) Enter(tree *tftree.SpanTree, span *model.Span) tftree.TreeVisitor {
for _, tag := range span.Tags {
if tag.Key == zconstants.SpanName {
span.OperationName = tag.VStr
break
}
}
return visitor
}
func (visitor ReplaceNameVisitor) Exit(tree *tftree.SpanTree, span *model.Span) {}
type PruneTagsVisitor struct{}
func (PruneTagsVisitor) Kind() string { return "PruneTagsVisitor" }
func (visitor PruneTagsVisitor) Enter(tree *tftree.SpanTree, span *model.Span) tftree.TreeVisitor {
span.Tags = removeZconstantKeys(span.Tags)
for i := range span.Logs {
log := &span.Logs[i]
log.Fields = removeZconstantKeys(log.Fields)
}
// add the timestamp to assist viewing time on list
if span == tree.Root {
span.OperationName = fmt.Sprintf(
"%s / %s..%s",
span.OperationName,
span.StartTime.Format("15:04:05"),
span.StartTime.Add(span.Duration).Format("15:04:05"),
)
}
return visitor
}
func (visitor PruneTagsVisitor) Exit(tree *tftree.SpanTree, span *model.Span) {}
func removeZconstantKeys(tags model.KeyValues) model.KeyValues {
newTags := model.KeyValues{}
for _, tag := range tags {
if !strings.HasPrefix(tag.Key, zconstants.Prefix) {
newTags = append(newTags, tag)
}
}
return newTags
}