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collectdtoinflux10.go
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collectdtoinflux10.go
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// Copyright 2015-2017 trivago GmbH
//
// 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 format
import (
"fmt"
"github.com/trivago/gollum/core"
"github.com/trivago/tgo/tio"
"github.com/trivago/tgo/tmath"
"strings"
)
// CollectdToInflux10 formatter
//
// This formatter transforms JSON data produced by collectd to InfluxDB 0.9.1 or
// later. Trailing and leading commas are removed from the Collectd message.
//
// Examples
//
// ExampleConsumer:
// Type: consumer.Console
// Streams: console
// Modulators:
// - formatter.CollectdToInflux10
type CollectdToInflux10 struct {
core.SimpleFormatter `gollumdoc:"embed_type"`
tagString *strings.Replacer
stringString *strings.Replacer
}
func init() {
core.TypeRegistry.Register(CollectdToInflux10{})
}
// Configure initializes this formatter with values from a plugin config.
func (format *CollectdToInflux10) Configure(conf core.PluginConfigReader) {
format.tagString = strings.NewReplacer(",", "\\,", " ", "\\ ")
format.stringString = strings.NewReplacer("\"", "\\\"")
}
func (format *CollectdToInflux10) escapeTag(value string) string {
return format.tagString.Replace(value)
}
func (format *CollectdToInflux10) escapeString(value string) string {
return format.stringString.Replace(value)
}
// ApplyFormatter update message payload
func (format *CollectdToInflux10) ApplyFormatter(msg *core.Message) error {
contentData := format.GetAppliedContent(msg)
collectdData, err := parseCollectdPacket(contentData)
if err != nil {
format.Logger.Error("Collectd parser error: ", err)
return err
}
// Manually convert to line protocol
influxData := tio.NewByteStream(len(contentData))
timestamp := int64(collectdData.Time * 1000)
fixedPart := fmt.Sprintf(
`%s,plugin_instance=%s,type=%s,type_instance=%s,host=%s`,
format.escapeTag(collectdData.Plugin),
format.escapeTag(collectdData.PluginInstance),
format.escapeTag(collectdData.PluginType),
format.escapeTag(collectdData.TypeInstance),
format.escapeTag(collectdData.Host))
setSize := tmath.Min3I(len(collectdData.Dstypes), len(collectdData.Dsnames), len(collectdData.Values))
for i := 0; i < setSize; i++ {
fmt.Fprintf(&influxData,
`%s,dstype=%s,dsname=%s value=%f %d\n`,
fixedPart,
format.escapeTag(collectdData.Dstypes[i]),
format.escapeTag(collectdData.Dsnames[i]),
collectdData.Values[i],
timestamp)
}
format.SetAppliedContent(msg, influxData.Bytes())
return nil
}