mirror of
https://github.com/miniflux/v2.git
synced 2024-08-31 00:27:24 +02:00
84 lines
2.4 KiB
Go
84 lines
2.4 KiB
Go
// Copyright 2011 Google Inc. All rights reserved.
|
|
// Use of this source code is governed by the Apache 2.0
|
|
// license that can be found in the LICENSE file.
|
|
|
|
/*
|
|
Package channel implements the server side of App Engine's Channel API.
|
|
|
|
Create creates a new channel associated with the given clientID,
|
|
which must be unique to the client that will use the returned token.
|
|
|
|
token, err := channel.Create(c, "player1")
|
|
if err != nil {
|
|
// handle error
|
|
}
|
|
// return token to the client in an HTTP response
|
|
|
|
Send sends a message to the client over the channel identified by clientID.
|
|
|
|
channel.Send(c, "player1", "Game over!")
|
|
*/
|
|
package channel // import "google.golang.org/appengine/channel"
|
|
|
|
import (
|
|
"encoding/json"
|
|
|
|
"golang.org/x/net/context"
|
|
|
|
"google.golang.org/appengine"
|
|
"google.golang.org/appengine/internal"
|
|
basepb "google.golang.org/appengine/internal/base"
|
|
pb "google.golang.org/appengine/internal/channel"
|
|
)
|
|
|
|
// Create creates a channel and returns a token for use by the client.
|
|
// The clientID is an application-provided string used to identify the client.
|
|
func Create(c context.Context, clientID string) (token string, err error) {
|
|
req := &pb.CreateChannelRequest{
|
|
ApplicationKey: &clientID,
|
|
}
|
|
resp := &pb.CreateChannelResponse{}
|
|
err = internal.Call(c, service, "CreateChannel", req, resp)
|
|
token = resp.GetToken()
|
|
return token, remapError(err)
|
|
}
|
|
|
|
// Send sends a message on the channel associated with clientID.
|
|
func Send(c context.Context, clientID, message string) error {
|
|
req := &pb.SendMessageRequest{
|
|
ApplicationKey: &clientID,
|
|
Message: &message,
|
|
}
|
|
resp := &basepb.VoidProto{}
|
|
return remapError(internal.Call(c, service, "SendChannelMessage", req, resp))
|
|
}
|
|
|
|
// SendJSON is a helper function that sends a JSON-encoded value
|
|
// on the channel associated with clientID.
|
|
func SendJSON(c context.Context, clientID string, value interface{}) error {
|
|
m, err := json.Marshal(value)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return Send(c, clientID, string(m))
|
|
}
|
|
|
|
// remapError fixes any APIError referencing "xmpp" into one referencing "channel".
|
|
func remapError(err error) error {
|
|
if e, ok := err.(*internal.APIError); ok {
|
|
if e.Service == "xmpp" {
|
|
e.Service = "channel"
|
|
}
|
|
}
|
|
return err
|
|
}
|
|
|
|
var service = "xmpp" // prod
|
|
|
|
func init() {
|
|
if appengine.IsDevAppServer() {
|
|
service = "channel" // dev
|
|
}
|
|
internal.RegisterErrorCodeMap("channel", pb.ChannelServiceError_ErrorCode_name)
|
|
}
|