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data.go
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data.go
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// Licensed to Elasticsearch B.V. under one or more contributor
// license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright
// ownership. Elasticsearch B.V. licenses this file to you 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 node_stats
import (
"encoding/json"
"github.com/pkg/errors"
"github.com/elastic/beats/libbeat/common"
s "github.com/elastic/beats/libbeat/common/schema"
c "github.com/elastic/beats/libbeat/common/schema/mapstriface"
"github.com/elastic/beats/metricbeat/helper/elastic"
"github.com/elastic/beats/metricbeat/mb"
"github.com/elastic/beats/metricbeat/module/logstash"
)
var (
schema = s.Schema{
"id": c.Str("id"),
"host": c.Str("host"),
"version": c.Str("version"),
"events": c.Dict("events", s.Schema{
"in": c.Int("in"),
"out": c.Int("out"),
"filtered": c.Int("filtered"),
}),
}
)
func eventMapping(r mb.ReporterV2, content []byte) error {
event := mb.Event{}
event.RootFields = common.MapStr{}
event.RootFields.Put("service.name", logstash.ModuleName)
var data map[string]interface{}
err := json.Unmarshal(content, &data)
if err != nil {
return errors.Wrap(err, "failure parsing Logstash Node Stats API response")
}
fields, err := schema.Apply(data)
if err != nil {
return errors.Wrap(err, "failure applying node stats schema")
}
// Set service ID
serviceID, err := fields.GetValue("id")
if err != nil {
return elastic.MakeErrorForMissingField("id", elastic.Logstash)
}
event.RootFields.Put("service.id", serviceID)
fields.Delete("id")
// Set service hostname
host, err := fields.GetValue("host")
if err != nil {
return elastic.MakeErrorForMissingField("host", elastic.Logstash)
}
event.RootFields.Put("service.hostname", host)
fields.Delete("host")
// Set service version
version, err := fields.GetValue("version")
if err != nil {
return elastic.MakeErrorForMissingField("version", elastic.Logstash)
}
event.RootFields.Put("service.version", version)
fields.Delete("version")
event.MetricSetFields = fields
r.Event(event)
return nil
}