Files
play-with-docker/pwd/pwd.go
Jonathan Leibiusky @xetorthio 7f17a7e21d Don't panic when docker client cannot be obtained.
Make close session faster by deleting instances in parallel.
2017-08-11 09:49:19 -03:00

129 lines
3.8 KiB
Go

package pwd
import (
"io"
"net"
"time"
"github.com/play-with-docker/play-with-docker/docker"
"github.com/play-with-docker/play-with-docker/event"
"github.com/play-with-docker/play-with-docker/provisioner"
"github.com/play-with-docker/play-with-docker/pwd/types"
"github.com/play-with-docker/play-with-docker/storage"
"github.com/prometheus/client_golang/prometheus"
"github.com/rs/xid"
"github.com/stretchr/testify/mock"
)
var (
sessionsGauge = prometheus.NewGauge(prometheus.GaugeOpts{
Name: "sessions",
Help: "Sessions",
})
clientsGauge = prometheus.NewGauge(prometheus.GaugeOpts{
Name: "clients",
Help: "Clients",
})
instancesGauge = prometheus.NewGauge(prometheus.GaugeOpts{
Name: "instances",
Help: "Instances",
})
latencyHistogramVec = prometheus.NewHistogramVec(prometheus.HistogramOpts{
Name: "pwd_action_duration_ms",
Help: "How long it took to process a specific action, in a specific host",
Buckets: []float64{300, 1200, 5000},
}, []string{"action"})
)
func observeAction(action string, start time.Time) {
latencyHistogramVec.WithLabelValues(action).Observe(float64(time.Since(start).Nanoseconds()) / 1000000)
}
func init() {
prometheus.MustRegister(sessionsGauge)
prometheus.MustRegister(clientsGauge)
prometheus.MustRegister(instancesGauge)
prometheus.MustRegister(latencyHistogramVec)
}
type pwd struct {
dockerFactory docker.FactoryApi
event event.EventApi
storage storage.StorageApi
generator IdGenerator
clientCount int32
windowsProvisioner provisioner.ProvisionerApi
dindProvisioner provisioner.ProvisionerApi
}
type IdGenerator interface {
NewId() string
}
type xidGenerator struct {
}
func (x xidGenerator) NewId() string {
return xid.New().String()
}
type mockGenerator struct {
mock.Mock
}
func (m *mockGenerator) NewId() string {
args := m.Called()
return args.String(0)
}
type PWDApi interface {
SessionNew(duration time.Duration, stack string, stackName, imageName string) (*types.Session, error)
SessionClose(session *types.Session) error
SessionGetSmallestViewPort(session *types.Session) types.ViewPort
SessionDeployStack(session *types.Session) error
SessionGet(id string) *types.Session
SessionSetup(session *types.Session, conf SessionSetupConf) error
InstanceNew(session *types.Session, conf types.InstanceConfig) (*types.Instance, error)
InstanceResizeTerminal(instance *types.Instance, cols, rows uint) error
InstanceGetTerminal(instance *types.Instance) (net.Conn, error)
InstanceUploadFromUrl(instance *types.Instance, fileName, dest, url string) error
InstanceUploadFromReader(instance *types.Instance, fileName, dest string, reader io.Reader) error
InstanceGet(session *types.Session, name string) *types.Instance
InstanceFindByIP(sessionId, ip string) *types.Instance
InstanceDelete(session *types.Session, instance *types.Instance) error
InstanceExec(instance *types.Instance, cmd []string) (int, error)
InstanceAllowedImages() []string
ClientNew(id string, session *types.Session) *types.Client
ClientResizeViewPort(client *types.Client, cols, rows uint)
ClientClose(client *types.Client)
ClientCount() int
}
func NewPWD(f docker.FactoryApi, e event.EventApi, s storage.StorageApi) *pwd {
return &pwd{dockerFactory: f, event: e, storage: s, generator: xidGenerator{}, windowsProvisioner: provisioner.NewWindowsASG(f, s), dindProvisioner: provisioner.NewDinD(f)}
}
func (p *pwd) getProvisioner(t string) (provisioner.ProvisionerApi, error) {
if t == "windows" {
return p.windowsProvisioner, nil
} else {
return p.dindProvisioner, nil
}
}
func (p *pwd) setGauges() {
s, _ := p.storage.SessionCount()
ses := float64(s)
i, _ := p.storage.InstanceCount()
ins := float64(i)
c := p.ClientCount()
cli := float64(c)
clientsGauge.Set(cli)
instancesGauge.Set(ins)
sessionsGauge.Set(ses)
}