/
provider.go
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/
provider.go
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// Copyright (c) 2021 Terminus, Inc.
//
// 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 cloudcat
import (
"reflect"
"strings"
"time"
"github.com/pkg/errors"
"github.com/erda-project/erda-infra/base/logs"
"github.com/erda-project/erda-infra/base/servicehub"
writer "github.com/erda-project/erda-infra/pkg/parallel-writer"
"github.com/erda-project/erda-infra/providers/kafka"
"github.com/erda-project/erda/modules/extensions/cloud/aliyun/metrics/cloudcat/api"
g "github.com/erda-project/erda/modules/extensions/cloud/aliyun/metrics/cloudcat/globals"
"github.com/erda-project/erda/modules/extensions/cloud/aliyun/metrics/cloudcat/scheduler"
)
type define struct{}
func (d *define) Services() []string { return []string{"cloudcat"} }
func (d *define) Summary() string { return "cloudcat" }
func (d *define) Dependencies() []string {
return []string{"kafka-producer"}
}
func (d *define) Description() string { return d.Summary() }
func (d *define) Config() interface{} { return &g.Config{} }
func (d *define) Creator() servicehub.Creator {
return func() servicehub.Provider {
return &manager{}
}
}
type manager struct {
Cfg *g.Config
Logger logs.Logger
writer writer.Writer
metaOrgClusters []api.OrgInfo
schedulers []*scheduler.Scheduler
schedulerChangedSig chan int
done chan struct{}
ctx servicehub.Context
}
func (m *manager) Init(ctx servicehub.Context) error {
g.Log = m.Logger
g.Cfg = m.Cfg
g.Cfg.Products = strings.Split(m.Cfg.ProductsCfg, ",")
m.ctx = ctx
if err := m.setWriter(); err != nil {
return err
}
if err := m.initScheduler(); err != nil {
return err
}
return nil
}
// Start .
func (m *manager) Start() error {
m.start()
select {
case <-m.done:
return nil
}
}
func (m *manager) Close() error {
for i := 0; i < len(m.schedulers); i++ {
if m.schedulers[i].State == scheduler.RUNNING {
m.schedulers[i].Close()
}
}
close(m.done)
return nil
}
// watch for org or cluster change
func (m *manager) sync() {
timer := time.NewTicker(m.Cfg.AccountReload)
for {
select {
case <-m.done:
timer.Stop()
return
case <-timer.C:
}
g.Log.Infof("start reload account...")
meta, err := api.ListOrgInfos()
if err != nil {
g.Log.Errorf("list org cluster error: %s", err)
continue
}
same := reflect.DeepEqual(meta, m.metaOrgClusters)
if !same {
m.Close()
if err := m.setWriter(); err != nil {
g.Log.Errorf("set writer failed. err: %s", err)
continue
}
if err := m.initScheduler(); err != nil {
g.Log.Errorf("init failed, err %s", err)
continue
}
m.start()
}
}
}
func (m *manager) retryFailedScheduler() {
timer := time.NewTicker(g.Cfg.AccountReload)
for {
select {
case <-m.done:
timer.Stop()
return
case <-timer.C:
}
g.Log.Info("check & retry failure scheduler...")
// retry
allSuccess := true
for i := 0; i < len(m.schedulers); i++ {
if m.schedulers[i].State != scheduler.RUNNING {
allSuccess = false
if err := m.schedulers[i].Retry(); err == nil {
go func() {
m.schedulers[i].Start()
}()
go func() {
m.schedulers[i].Sync(m.schedulerChangedSig)
}()
} else {
g.Log.Errorf("retry scheduler=%s failed. err=%s", m.schedulers[i], err)
}
}
}
if allSuccess {
timer.Stop()
return
}
}
}
func (m *manager) setWriter() error {
kaf := m.ctx.Service("kafka-producer").(kafka.Interface)
w, err := kaf.NewProducer(&m.Cfg.Output)
if err != nil {
return errors.Errorf("fail to create kafka producer: %s", err)
}
m.writer = w
return nil
}
func (m *manager) start() {
for _, s := range m.schedulers {
if s.State == scheduler.RUNNING {
go func(ss *scheduler.Scheduler) { ss.Start() }(s)
go func(ss *scheduler.Scheduler) { ss.Sync(m.schedulerChangedSig) }(s)
}
}
go m.sync()
go m.monitor()
go m.retryFailedScheduler()
}
// watch for ith scheduler meta info change
func (m *manager) monitor() {
for {
select {
case <-m.done:
return
case idx := <-m.schedulerChangedSig:
g.Log.Infof("%dth scheduler <%s> MetaProjects info changed, start to recreate", idx, m.schedulers[idx])
olds := m.schedulers[idx]
if olds == nil {
break
}
olds.Close()
item := m.metaOrgClusters[idx]
news, err := scheduler.New(item, m.Cfg, m.writer)
m.schedulers[idx] = news
if err != nil {
g.Log.Errorf("create scheduler with <%s, %s>", item.OrgId, item.OrgName)
break
}
go func() { m.schedulers[idx].Start() }()
go func() { m.schedulers[idx].Sync(m.schedulerChangedSig) }()
g.Log.Infof("%dth scheduler <%s> MetaProjects info changed, recreate complete", idx, m.schedulers[idx])
}
}
}
func (m *manager) initScheduler() error {
m.done = make(chan struct{})
m.schedulerChangedSig = make(chan int)
meta, err := api.ListOrgInfos()
if err != nil {
g.Log.Infof("can not get org info: %s. will try again with %s interval", err, g.Cfg.AccountReload)
}
m.metaOrgClusters = meta
schedulers := make([]*scheduler.Scheduler, len(m.metaOrgClusters))
for i := 0; i < len(m.metaOrgClusters); i++ {
item := m.metaOrgClusters[i]
s, err := scheduler.New(item, m.Cfg, m.writer)
if err != nil {
g.Log.Errorf("create scheduler with <%s, %s> failed. err: %s", item.OrgId, item.OrgName, err)
} else {
g.Log.Infof("create scheduler with <%s, %s> successfully", item.OrgId, item.OrgName)
}
schedulers[i] = s
}
m.schedulers = schedulers
return nil
}
func init() {
servicehub.RegisterProvider("cloudcat", &define{})
}