120 lines
2.8 KiB
Go
120 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 flows
|
|
|
|
import (
|
|
"time"
|
|
|
|
"github.com/elastic/beats/libbeat/beat"
|
|
"github.com/elastic/beats/libbeat/logp"
|
|
"github.com/elastic/beats/packetbeat/config"
|
|
)
|
|
|
|
type Flows struct {
|
|
worker *worker
|
|
table *flowMetaTable
|
|
counterReg *counterReg
|
|
}
|
|
|
|
// Reporter callback type, to report flow events to.
|
|
type Reporter func([]beat.Event)
|
|
|
|
var debugf = logp.MakeDebug("flows")
|
|
|
|
const (
|
|
defaultTimeout = 30 * time.Second
|
|
defaultPeriod = 10 * time.Second
|
|
)
|
|
|
|
func NewFlows(pub Reporter, config *config.Flows) (*Flows, error) {
|
|
duration := func(s string, d time.Duration) (time.Duration, error) {
|
|
if s == "" {
|
|
return d, nil
|
|
}
|
|
return time.ParseDuration(s)
|
|
}
|
|
|
|
timeout, err := duration(config.Timeout, defaultTimeout)
|
|
if err != nil {
|
|
logp.Err("failed to parse flow timeout: %v", err)
|
|
return nil, err
|
|
}
|
|
|
|
period, err := duration(config.Period, defaultPeriod)
|
|
if err != nil {
|
|
logp.Err("failed to parse period: %v", err)
|
|
return nil, err
|
|
}
|
|
|
|
table := &flowMetaTable{
|
|
table: make(map[flowIDMeta]*flowTable),
|
|
}
|
|
|
|
counter := &counterReg{}
|
|
|
|
worker, err := newFlowsWorker(pub, table, counter, timeout, period)
|
|
if err != nil {
|
|
logp.Err("failed to configure flows processing intervals: %v", err)
|
|
return nil, err
|
|
}
|
|
|
|
return &Flows{
|
|
table: table,
|
|
worker: worker,
|
|
counterReg: counter,
|
|
}, nil
|
|
}
|
|
|
|
func (f *Flows) Lock() {
|
|
debugf("lock flows")
|
|
f.table.Lock()
|
|
}
|
|
|
|
func (f *Flows) Unlock() {
|
|
debugf("unlock flows")
|
|
f.table.Unlock()
|
|
}
|
|
|
|
func (f *Flows) Get(id *FlowID) *Flow {
|
|
debugf("get flow")
|
|
if id.flow.stats == nil {
|
|
debugf("lookup flow: %v => %v", id.flowIDMeta, id.flowID)
|
|
id.flow = f.table.get(id, f.counterReg)
|
|
}
|
|
return &id.flow
|
|
}
|
|
|
|
func (f *Flows) Start() {
|
|
f.worker.Start()
|
|
}
|
|
|
|
func (f *Flows) Stop() {
|
|
f.worker.Stop()
|
|
}
|
|
|
|
func (f *Flows) NewInt(name string) (*Int, error) {
|
|
return f.counterReg.newInt(name)
|
|
}
|
|
|
|
func (f *Flows) NewUint(name string) (*Uint, error) {
|
|
return f.counterReg.newUint(name)
|
|
}
|
|
|
|
func (f *Flows) NewFloat(name string) (*Float, error) {
|
|
return f.counterReg.newFloat(name)
|
|
}
|