(ctx context.Context)
| 129 | } |
| 130 | |
| 131 | func (o *lazyCredsOpener) defaultConn(ctx context.Context) (*URLOpener, error) { |
| 132 | o.init.Do(func() { |
| 133 | var conn *grpc.ClientConn |
| 134 | var err error |
| 135 | if e := os.Getenv("PUBSUB_EMULATOR_HOST"); e != "" { |
| 136 | // Connect to the GCP pubsub emulator by overriding the default endpoint |
| 137 | // if the 'PUBSUB_EMULATOR_HOST' environment variable is set. |
| 138 | // Check https://cloud.google.com/pubsub/docs/emulator for more info. |
| 139 | endPoint = e |
| 140 | conn, err = dialEmulator(ctx, e) |
| 141 | if err != nil { |
| 142 | o.err = err |
| 143 | return |
| 144 | } |
| 145 | } else { |
| 146 | creds, err := gcp.DefaultCredentials(ctx) |
| 147 | if err != nil { |
| 148 | o.err = err |
| 149 | return |
| 150 | } |
| 151 | |
| 152 | conn, _, err = Dial(ctx, creds.TokenSource) |
| 153 | if err != nil { |
| 154 | o.err = err |
| 155 | return |
| 156 | } |
| 157 | } |
| 158 | o.opener = &URLOpener{Conn: conn} |
| 159 | }) |
| 160 | return o.opener, o.err |
| 161 | } |
| 162 | |
| 163 | func (o *lazyCredsOpener) OpenTopicURL(ctx context.Context, u *url.URL) (*pubsub.Topic, error) { |
| 164 | opener, err := o.defaultConn(ctx) |
no test coverage detected