forked from goodrain/rainbond
/
monitor.go
243 lines (209 loc) · 6.69 KB
/
monitor.go
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// Copyright (C) 2014-2018 Goodrain Co., Ltd.
// RAINBOND, Application Management Platform
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version. For any non-GPL usage of Rainbond,
// one or multiple Commercial Licenses authorized by Goodrain Co., Ltd.
// must be obtained first.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package monitor
import (
"context"
"time"
"github.com/Sirupsen/logrus"
v3 "github.com/coreos/etcd/clientv3"
"github.com/goodrain/rainbond/cmd/monitor/option"
discoverv1 "github.com/goodrain/rainbond/discover"
discoverv2 "github.com/goodrain/rainbond/discover.v2"
"github.com/goodrain/rainbond/discover/config"
"github.com/goodrain/rainbond/monitor/callback"
"github.com/goodrain/rainbond/monitor/prometheus"
"github.com/goodrain/rainbond/util/watch"
"github.com/tidwall/gjson"
)
//Monitor monitor
type Monitor struct {
config *option.Config
ctx context.Context
cancel context.CancelFunc
client *v3.Client
timeout time.Duration
manager *prometheus.Manager
discoverv1 discoverv1.Discover
discoverv2 discoverv2.Discover
}
//Start start
func (d *Monitor) Start() {
d.discoverv1.AddProject("prometheus", &callback.Prometheus{Prometheus: d.manager})
d.discoverv1.AddProject("event_log_event_http", &callback.EventLog{Prometheus: d.manager})
d.discoverv1.AddProject("acp_webcli", &callback.Webcli{Prometheus: d.manager})
d.discoverv1.AddProject("gateway", &callback.GatewayNode{Prometheus: d.manager})
d.discoverv2.AddProject("builder", &callback.Builder{Prometheus: d.manager})
d.discoverv2.AddProject("mq", &callback.Mq{Prometheus: d.manager})
d.discoverv2.AddProject("app_sync_runtime_server", &callback.Worker{Prometheus: d.manager})
// node and app runtime metrics needs to be monitored separately
go d.discoverNodes(&callback.Node{Prometheus: d.manager}, &callback.App{Prometheus: d.manager}, d.ctx.Done())
// monitor etcd members
go d.discoverEtcd(&callback.Etcd{Prometheus: d.manager}, d.ctx.Done())
// monitor Cadvisor
go d.discoverCadvisor(&callback.Cadvisor{Prometheus: d.manager, ListenPort: d.config.CadvisorListenPort}, d.ctx.Done())
}
func (d *Monitor) discoverNodes(node *callback.Node, app *callback.App, done <-chan struct{}) {
// start listen node modified
watcher := watch.New(d.client, "")
w, err := watcher.WatchList(d.ctx, "/rainbond/nodes", "")
if err != nil {
logrus.Error("failed to watch list for discover all nodes: ", err)
return
}
defer w.Stop()
for {
select {
case event, ok := <-w.ResultChan():
if !ok {
logrus.Warn("the events channel is closed.")
return
}
switch event.Type {
case watch.Added:
node.Add(&event)
isSlave := gjson.Get(event.GetValueString(), "labels.rainbond_node_rule_compute").String()
if isSlave == "true" {
app.Add(&event)
}
case watch.Modified:
node.Modify(&event)
isSlave := gjson.Get(event.GetValueString(), "labels.rainbond_node_rule_compute").String()
if isSlave == "true" {
app.Modify(&event)
}
case watch.Deleted:
node.Delete(&event)
isSlave := gjson.Get(event.GetValueString(), "labels.rainbond_node_rule_compute").String()
if isSlave == "true" {
app.Delete(&event)
}
case watch.Error:
logrus.Error("error when read a event from result chan for discover all nodes: ", event.Error)
}
case <-done:
logrus.Info("stop discover nodes because received stop signal.")
return
}
}
}
func (d *Monitor) discoverCadvisor(c *callback.Cadvisor, done <-chan struct{}) {
// start listen node modified
watcher := watch.New(d.client, "")
w, err := watcher.WatchList(d.ctx, "/rainbond/nodes", "")
if err != nil {
logrus.Error("failed to watch list for discover all nodes: ", err)
return
}
defer w.Stop()
for {
select {
case event, ok := <-w.ResultChan():
if !ok {
logrus.Warn("the events channel is closed.")
return
}
switch event.Type {
case watch.Added:
isSlave := gjson.Get(event.GetValueString(), "labels.rainbond_node_rule_compute").String()
if isSlave == "true" {
c.Add(&event)
}
case watch.Modified:
isSlave := gjson.Get(event.GetValueString(), "labels.rainbond_node_rule_compute").String()
if isSlave == "true" {
c.Modify(&event)
}
case watch.Deleted:
isSlave := gjson.Get(event.GetValueString(), "labels.rainbond_node_rule_compute").String()
if isSlave == "true" {
c.Delete(&event)
}
case watch.Error:
logrus.Error("error when read a event from result chan for discover all nodes: ", event.Error)
}
case <-done:
logrus.Info("stop discover nodes because received stop signal.")
return
}
}
}
func (d *Monitor) discoverEtcd(e *callback.Etcd, done <-chan struct{}) {
t := time.Tick(time.Minute)
for {
select {
case <-done:
logrus.Info("stop discover etcd because received stop signal.")
return
case <-t:
resp, err := d.client.MemberList(d.ctx)
if err != nil {
logrus.Error("Failed to list etcd members for discover etcd.")
continue
}
endpoints := make([]*config.Endpoint, 0, 5)
for _, member := range resp.Members {
if len(member.ClientURLs) > 1 {
url := member.ClientURLs[0]
end := &config.Endpoint{
URL: url,
}
endpoints = append(endpoints, end)
}
}
e.UpdateEndpoints(endpoints...)
}
}
}
func (d *Monitor) Stop() {
logrus.Info("Stopping all child process for monitor")
d.cancel()
d.discoverv1.Stop()
d.discoverv2.Stop()
d.client.Close()
}
func NewMonitor(opt *option.Config, p *prometheus.Manager) *Monitor {
ctx, cancel := context.WithCancel(context.Background())
defaultTimeout := time.Second * 3
cli, err := v3.New(v3.Config{
Endpoints: opt.EtcdEndpoints,
DialTimeout: defaultTimeout,
})
if err != nil {
logrus.Fatal(err)
}
dc1, err := discoverv1.GetDiscover(config.DiscoverConfig{
EtcdClusterEndpoints: opt.EtcdEndpoints,
})
if err != nil {
logrus.Fatal(err)
}
dc3, err := discoverv2.GetDiscover(config.DiscoverConfig{
EtcdClusterEndpoints: opt.EtcdEndpoints,
})
if err != nil {
logrus.Fatal(err)
}
d := &Monitor{
config: opt,
ctx: ctx,
cancel: cancel,
manager: p,
client: cli,
discoverv1: dc1,
discoverv2: dc3,
timeout: defaultTimeout,
}
return d
}