github.com/uppal0016/docker_new@v0.0.0-20240123060250-1c98be13ac2c/api/server/router/system/system_routes.go (about)

     1  package system
     2  
     3  import (
     4  	"encoding/json"
     5  	"net/http"
     6  	"time"
     7  
     8  	"github.com/Sirupsen/logrus"
     9  	"github.com/docker/docker/api"
    10  	"github.com/docker/docker/api/server/httputils"
    11  	"github.com/docker/docker/pkg/ioutils"
    12  	"github.com/docker/engine-api/types"
    13  	"github.com/docker/engine-api/types/events"
    14  	"github.com/docker/engine-api/types/filters"
    15  	timetypes "github.com/docker/engine-api/types/time"
    16  	"golang.org/x/net/context"
    17  )
    18  
    19  func optionsHandler(ctx context.Context, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
    20  	w.WriteHeader(http.StatusOK)
    21  	return nil
    22  }
    23  
    24  func pingHandler(ctx context.Context, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
    25  	_, err := w.Write([]byte{'O', 'K'})
    26  	return err
    27  }
    28  
    29  func (s *systemRouter) getInfo(ctx context.Context, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
    30  	info, err := s.backend.SystemInfo()
    31  	if err != nil {
    32  		return err
    33  	}
    34  
    35  	return httputils.WriteJSON(w, http.StatusOK, info)
    36  }
    37  
    38  func (s *systemRouter) getVersion(ctx context.Context, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
    39  	info := s.backend.SystemVersion()
    40  	info.APIVersion = api.DefaultVersion.String()
    41  
    42  	return httputils.WriteJSON(w, http.StatusOK, info)
    43  }
    44  
    45  func (s *systemRouter) getEvents(ctx context.Context, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
    46  	if err := httputils.ParseForm(r); err != nil {
    47  		return err
    48  	}
    49  	since, sinceNano, err := timetypes.ParseTimestamps(r.Form.Get("since"), -1)
    50  	if err != nil {
    51  		return err
    52  	}
    53  	until, untilNano, err := timetypes.ParseTimestamps(r.Form.Get("until"), -1)
    54  	if err != nil {
    55  		return err
    56  	}
    57  
    58  	var timeout <-chan time.Time
    59  	if until > 0 || untilNano > 0 {
    60  		dur := time.Unix(until, untilNano).Sub(time.Now())
    61  		timeout = time.NewTimer(dur).C
    62  	}
    63  
    64  	ef, err := filters.FromParam(r.Form.Get("filters"))
    65  	if err != nil {
    66  		return err
    67  	}
    68  
    69  	w.Header().Set("Content-Type", "application/json")
    70  	output := ioutils.NewWriteFlusher(w)
    71  	defer output.Close()
    72  	output.Flush()
    73  
    74  	enc := json.NewEncoder(output)
    75  
    76  	buffered, l := s.backend.SubscribeToEvents(since, sinceNano, ef)
    77  	defer s.backend.UnsubscribeFromEvents(l)
    78  
    79  	for _, ev := range buffered {
    80  		if err := enc.Encode(ev); err != nil {
    81  			return err
    82  		}
    83  	}
    84  
    85  	for {
    86  		select {
    87  		case ev := <-l:
    88  			jev, ok := ev.(events.Message)
    89  			if !ok {
    90  				logrus.Warnf("unexpected event message: %q", ev)
    91  				continue
    92  			}
    93  			if err := enc.Encode(jev); err != nil {
    94  				return err
    95  			}
    96  		case <-timeout:
    97  			return nil
    98  		case <-ctx.Done():
    99  			logrus.Debug("Client context cancelled, stop sending events")
   100  			return nil
   101  		}
   102  	}
   103  }
   104  
   105  func (s *systemRouter) postAuth(ctx context.Context, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
   106  	var config *types.AuthConfig
   107  	err := json.NewDecoder(r.Body).Decode(&config)
   108  	r.Body.Close()
   109  	if err != nil {
   110  		return err
   111  	}
   112  	status, token, err := s.backend.AuthenticateToRegistry(ctx, config)
   113  	if err != nil {
   114  		return err
   115  	}
   116  	return httputils.WriteJSON(w, http.StatusOK, &types.AuthResponse{
   117  		Status:        status,
   118  		IdentityToken: token,
   119  	})
   120  }