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collectdtoinflux08.go
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collectdtoinflux08.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"
)
// CollectdToInflux08 formatter
//
// This formatter transforms JSON data produced by collectd to InfluxDB 0.8.x.
// Trailing and leading commas are removed from the Collectd message.
//
// Examples
//
// ExampleConsumer:
// Type: consumer.Console
// Streams: console
// Modulators:
// - formatter.CollectdToInflux08
type CollectdToInflux08 struct {
core.SimpleFormatter `gollumdoc:"embed_type"`
}
func init() {
core.TypeRegistry.Register(CollectdToInflux08{})
}
// Configure initializes this formatter with values from a plugin config.
func (format *CollectdToInflux08) Configure(conf core.PluginConfigReader) {
}
func (format *CollectdToInflux08) createMetricName(plugin string, pluginInstance string, pluginType string, pluginTypeInstance string, host string) string {
if pluginInstance != "" {
pluginInstance = "-" + pluginInstance
}
if pluginTypeInstance != "" {
pluginTypeInstance = "-" + pluginTypeInstance
}
return fmt.Sprintf("%s.%s%s.%s%s", host, plugin, pluginInstance, pluginType, pluginTypeInstance)
}
// ApplyFormatter update message payload
func (format *CollectdToInflux08) 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 JSON lines
influxData := tio.NewByteStream(len(contentData))
name := format.createMetricName(collectdData.Plugin,
collectdData.PluginInstance,
collectdData.PluginType,
collectdData.TypeInstance,
collectdData.Host)
for _, value := range collectdData.Values {
fmt.Fprintf(&influxData, `{"name": "%s", "columns": ["time", "value"], "points":[[%d, %f]]},`, name, int32(collectdData.Time), value)
}
format.SetAppliedContent(msg, influxData.Bytes())
return nil
}