/
monitor_manager.go
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/
monitor_manager.go
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// RAINBOND, Application Management Platform
// Copyright (C) 2014-2017 Goodrain Co., Ltd.
// 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"
"net/http"
"github.com/Sirupsen/logrus"
"github.com/goodrain/rainbond/cmd/node/option"
"github.com/goodrain/rainbond/node/api"
"github.com/goodrain/rainbond/node/monitormessage"
"github.com/goodrain/rainbond/node/statsd"
etcdutil "github.com/goodrain/rainbond/util/etcd"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promhttp"
"github.com/prometheus/node_exporter/collector"
)
//Manager Manager
type Manager interface {
Start(errchan chan error) error
Stop() error
SetAPIRoute(apim *api.Manager) error
}
type manager struct {
statsdExporter *statsd.Exporter
statsdRegistry *prometheus.Registry
nodeExporterRestry *prometheus.Registry
meserver *monitormessage.UDPServer
}
func createNodeExporterRestry() (*prometheus.Registry, error) {
registry := prometheus.NewRegistry()
filters := []string{"cpu", "diskstats", "filesystem",
"ipvs", "loadavg", "meminfo", "netdev",
"netclass", "netdev", "netstat",
"uname", "mountstats", "nfs"}
nc, err := collector.NewNodeCollector(filters...)
if err != nil {
return nil, err
}
for n := range nc.Collectors {
logrus.Infof("node collector - %s", n)
}
err = registry.Register(nc)
if err != nil {
return nil, err
}
return registry, nil
}
//CreateManager CreateManager
func CreateManager(ctx context.Context, c *option.Conf) (Manager, error) {
//statsd exporter
statsdRegistry := prometheus.NewRegistry()
exporter := statsd.CreateExporter(c.StatsdConfig, statsdRegistry)
etcdClientArgs := &etcdutil.ClientArgs{
Endpoints: c.EtcdEndpoints,
CaFile: c.EtcdCaFile,
CertFile: c.EtcdCertFile,
KeyFile: c.EtcdKeyFile,
}
meserver := monitormessage.CreateUDPServer(ctx, "0.0.0.0", 6666, etcdClientArgs)
nodeExporterRestry, err := createNodeExporterRestry()
if err != nil {
return nil, err
}
manage := &manager{
statsdExporter: exporter,
statsdRegistry: statsdRegistry,
nodeExporterRestry: nodeExporterRestry,
meserver: meserver,
}
return manage, nil
}
func (m *manager) Start(errchan chan error) error {
if err := m.statsdExporter.Start(); err != nil {
logrus.Errorf("start statsd exporter server error,%s", err.Error())
return err
}
if err := m.meserver.Start(); err != nil {
return err
}
return nil
}
func (m *manager) Stop() error {
return nil
}
//ReloadStatsdMappConfig ReloadStatsdMappConfig
func (m *manager) ReloadStatsdMappConfig(w http.ResponseWriter, r *http.Request) {
if err := m.statsdExporter.ReloadConfig(); err != nil {
w.Write([]byte(err.Error()))
w.WriteHeader(500)
} else {
w.Write([]byte("Success reload"))
w.WriteHeader(200)
}
}
//HandleStatsd statsd handle
func (m *manager) HandleStatsd(w http.ResponseWriter, r *http.Request) {
gatherers := prometheus.Gatherers{
prometheus.DefaultGatherer,
m.statsdRegistry,
}
// Delegate http serving to Prometheus client library, which will call collector.Collect.
h := promhttp.HandlerFor(gatherers,
promhttp.HandlerOpts{
ErrorLog: logrus.StandardLogger(),
ErrorHandling: promhttp.ContinueOnError,
})
h.ServeHTTP(w, r)
}
//NodeExporter node exporter
func (m *manager) NodeExporter(w http.ResponseWriter, r *http.Request) {
gatherers := prometheus.Gatherers{
prometheus.DefaultGatherer,
m.nodeExporterRestry,
}
// Delegate http serving to Prometheus client library, which will call collector.Collect.
h := promhttp.HandlerFor(gatherers,
promhttp.HandlerOpts{
ErrorLog: logrus.StandardLogger(),
ErrorHandling: promhttp.ContinueOnError,
})
h.ServeHTTP(w, r)
}
//SetAPIRoute set api route rule
func (m *manager) SetAPIRoute(apim *api.Manager) error {
apim.GetRouter().Get("/app/metrics", m.HandleStatsd)
apim.GetRouter().Get("/-/statsdreload", m.ReloadStatsdMappConfig)
apim.GetRouter().Get("/node/metrics", m.NodeExporter)
return nil
}