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system_routes.go
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/
system_routes.go
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package system
import (
"encoding/json"
"net/http"
"time"
"github.com/Sirupsen/logrus"
"github.com/docker/docker/api"
"github.com/docker/docker/api/server/httputils"
"github.com/docker/docker/pkg/ioutils"
"github.com/docker/engine-api/types"
"github.com/docker/engine-api/types/events"
"github.com/docker/engine-api/types/filters"
timetypes "github.com/docker/engine-api/types/time"
"golang.org/x/net/context"
)
func optionsHandler(ctx context.Context, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
w.WriteHeader(http.StatusOK)
return nil
}
func pingHandler(ctx context.Context, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
_, err := w.Write([]byte{'O', 'K'})
return err
}
func (s *systemRouter) getInfo(ctx context.Context, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
info, err := s.backend.SystemInfo()
if err != nil {
return err
}
return httputils.WriteJSON(w, http.StatusOK, info)
}
func (s *systemRouter) getVersion(ctx context.Context, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
info := s.backend.SystemVersion()
info.APIVersion = api.DefaultVersion.String()
return httputils.WriteJSON(w, http.StatusOK, info)
}
func (s *systemRouter) getEvents(ctx context.Context, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := httputils.ParseForm(r); err != nil {
return err
}
since, sinceNano, err := timetypes.ParseTimestamps(r.Form.Get("since"), -1)
if err != nil {
return err
}
until, untilNano, err := timetypes.ParseTimestamps(r.Form.Get("until"), -1)
if err != nil {
return err
}
var timeout <-chan time.Time
if until > 0 || untilNano > 0 {
dur := time.Unix(until, untilNano).Sub(time.Now())
timeout = time.NewTimer(dur).C
}
ef, err := filters.FromParam(r.Form.Get("filters"))
if err != nil {
return err
}
w.Header().Set("Content-Type", "application/json")
output := ioutils.NewWriteFlusher(w)
defer output.Close()
output.Flush()
enc := json.NewEncoder(output)
buffered, l := s.backend.SubscribeToEvents(since, sinceNano, ef)
defer s.backend.UnsubscribeFromEvents(l)
for _, ev := range buffered {
if err := enc.Encode(ev); err != nil {
return err
}
}
var closeNotify <-chan bool
if closeNotifier, ok := w.(http.CloseNotifier); ok {
closeNotify = closeNotifier.CloseNotify()
}
for {
select {
case ev := <-l:
jev, ok := ev.(events.Message)
if !ok {
logrus.Warnf("unexpected event message: %q", ev)
continue
}
if err := enc.Encode(jev); err != nil {
return err
}
case <-timeout:
return nil
case <-closeNotify:
logrus.Debug("Client disconnected, stop sending events")
return nil
}
}
}
func (s *systemRouter) postAuth(ctx context.Context, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
var config *types.AuthConfig
err := json.NewDecoder(r.Body).Decode(&config)
r.Body.Close()
if err != nil {
return err
}
status, token, err := s.backend.AuthenticateToRegistry(ctx, config)
if err != nil {
return err
}
return httputils.WriteJSON(w, http.StatusOK, &types.AuthResponse{
Status: status,
IdentityToken: token,
})
}