// Returns a thread-compatible implementation of GCM interactions.
func NewCore() (*GcmCore, error) {
token, err := gce.NewAuthTokenProvider(GCMAuthScope)
if err != nil {
return nil, err
}
// Detect project.
project, err := metadata.ProjectID()
if err != nil {
return nil, err
}
core := &GcmCore{
token: token,
project: project,
exportedMetrics: make(map[string]metricDescriptor),
lastValue: gcstore.New(time.Hour),
}
// Wait for an initial token.
_, err = core.token.WaitForToken()
if err != nil {
return nil, err
}
if err := core.listMetrics(); err != nil {
return nil, err
}
return core, nil
}
// Returns an implementation of a Google Cloud Logging (GCL) sink.
func new() (sink_api.ExternalSink, error) {
token, err := gce.NewAuthTokenProvider(GCLAuthScope)
if err != nil {
return nil, err
}
// Detect project ID
projectId, err := metadata.ProjectID()
if err != nil {
return nil, err
}
glog.Infof("Project ID for GCL sink is: %q\r\n", projectId)
impl := &gclSink{
token: token,
projectId: projectId,
httpClient: &http.Client{},
}
return impl, nil
}