122 lines
2.8 KiB
Go
122 lines
2.8 KiB
Go
// 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 udp
|
|
|
|
import (
|
|
"sync"
|
|
"time"
|
|
|
|
"github.com/elastic/beats/filebeat/channel"
|
|
"github.com/elastic/beats/filebeat/harvester"
|
|
"github.com/elastic/beats/filebeat/input"
|
|
"github.com/elastic/beats/filebeat/inputsource"
|
|
"github.com/elastic/beats/filebeat/inputsource/udp"
|
|
"github.com/elastic/beats/filebeat/util"
|
|
"github.com/elastic/beats/libbeat/beat"
|
|
"github.com/elastic/beats/libbeat/common"
|
|
"github.com/elastic/beats/libbeat/logp"
|
|
)
|
|
|
|
func init() {
|
|
err := input.Register("udp", NewInput)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
}
|
|
|
|
// Input defines a udp input to receive event on a specific host:port.
|
|
type Input struct {
|
|
sync.Mutex
|
|
udp *udp.Server
|
|
started bool
|
|
outlet channel.Outleter
|
|
}
|
|
|
|
// NewInput creates a new udp input
|
|
func NewInput(
|
|
cfg *common.Config,
|
|
outlet channel.Connector,
|
|
context input.Context,
|
|
) (input.Input, error) {
|
|
|
|
out, err := outlet(cfg, context.DynamicFields)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
config := defaultConfig
|
|
if err = cfg.Unpack(&config); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
forwarder := harvester.NewForwarder(out)
|
|
callback := func(data []byte, metadata inputsource.NetworkMetadata) {
|
|
e := util.NewData()
|
|
e.Event = beat.Event{
|
|
Timestamp: time.Now(),
|
|
Meta: common.MapStr{
|
|
"truncated": metadata.Truncated,
|
|
},
|
|
Fields: common.MapStr{
|
|
"message": string(data),
|
|
"source": metadata.RemoteAddr.String(),
|
|
},
|
|
}
|
|
forwarder.Send(e)
|
|
}
|
|
|
|
udp := udp.New(&config.Config, callback)
|
|
|
|
return &Input{
|
|
outlet: out,
|
|
udp: udp,
|
|
started: false,
|
|
}, nil
|
|
}
|
|
|
|
// Run starts and start the UDP server and read events from the socket
|
|
func (p *Input) Run() {
|
|
p.Lock()
|
|
defer p.Unlock()
|
|
|
|
if !p.started {
|
|
logp.Info("Starting UDP input")
|
|
err := p.udp.Start()
|
|
if err != nil {
|
|
logp.Err("Error running harvester: %v", err)
|
|
}
|
|
p.started = true
|
|
}
|
|
}
|
|
|
|
// Stop stops the UDP input
|
|
func (p *Input) Stop() {
|
|
defer p.outlet.Close()
|
|
p.Lock()
|
|
defer p.Unlock()
|
|
|
|
logp.Info("Stopping UDP input")
|
|
p.udp.Stop()
|
|
p.started = false
|
|
}
|
|
|
|
// Wait suspends the UDP input
|
|
func (p *Input) Wait() {
|
|
p.Stop()
|
|
}
|