// NewClient creates a new PubSub client.
func NewClient(ctx context.Context, projectID string, opts ...cloud.ClientOption) (*Client, error) {
var o []cloud.ClientOption
// Environment variables for gcloud emulator:
// https://cloud.google.com/sdk/gcloud/reference/beta/emulators/pubsub/
if addr := os.Getenv("PUBSUB_EMULATOR_HOST"); addr != "" {
o = []cloud.ClientOption{
cloud.WithEndpoint("http://" + addr + "/"),
cloud.WithBaseHTTP(http.DefaultClient),
}
} else {
o = []cloud.ClientOption{
cloud.WithEndpoint(prodAddr),
cloud.WithScopes(raw.PubsubScope, raw.CloudPlatformScope),
cloud.WithUserAgent(userAgent),
}
}
o = append(o, opts...)
httpClient, endpoint, err := transport.NewHTTPClient(ctx, o...)
if err != nil {
return nil, fmt.Errorf("dialing: %v", err)
}
s, err := newPubSubService(httpClient, endpoint)
if err != nil {
return nil, fmt.Errorf("constructing pubsub client: %v", err)
}
c := &Client{
projectID: projectID,
s: s,
}
return c, nil
}
// NewClient returns a new log client, logging to the named log in the
// provided project.
//
// The exported fields on the returned client may be modified before
// the client is used for logging. Once log entries are in flight,
// the fields must not be modified.
func NewClient(ctx context.Context, projectID, logName string, opts ...cloud.ClientOption) (*Client, error) {
httpClient, endpoint, err := transport.NewHTTPClient(ctx, append([]cloud.ClientOption{
cloud.WithEndpoint(prodAddr),
cloud.WithScopes(Scope),
cloud.WithUserAgent(userAgent),
}, opts...)...)
if err != nil {
return nil, err
}
svc, err := api.New(httpClient)
if err != nil {
return nil, err
}
svc.BasePath = endpoint
c := &Client{
svc: svc,
logs: api.NewProjectsLogsEntriesService(svc),
logName: logName,
projID: projectID,
}
for i := range c.writer {
level := Level(i)
c.writer[level] = levelWriter{level, c}
c.logger[level] = log.New(c.writer[level], "", 0)
}
return c, nil
}
func newGoogleClient(ctx context.Context, bucket string) (*googleClient, error) {
client, err := storage.NewClient(
ctx,
cloud.WithTokenSource(google.ComputeTokenSource("")),
cloud.WithScopes(storage.ScopeFullControl),
)
if err != nil {
return nil, err
}
return &googleClient{ctx, client.Bucket(bucket)}, nil
}
// NewClient creates a new Client for a given dataset.
func NewClient(ctx context.Context, projectID string, opts ...cloud.ClientOption) (*Client, error) {
o := []cloud.ClientOption{
cloud.WithEndpoint(prodAddr),
cloud.WithScopes(ScopeDatastore, ScopeUserEmail),
cloud.WithUserAgent(userAgent),
}
o = append(o, opts...)
client, err := transport.NewProtoClient(ctx, o...)
if err != nil {
return nil, fmt.Errorf("dialing: %v", err)
}
return &Client{
client: client,
dataset: projectID,
}, nil
}
// NewClusterAdminClient creates a new ClusterAdminClient for a given project.
func NewClusterAdminClient(ctx context.Context, project string, opts ...cloud.ClientOption) (*ClusterAdminClient, error) {
o := []cloud.ClientOption{
cloud.WithEndpoint(clusterAdminAddr),
cloud.WithScopes(ClusterAdminScope),
}
o = append(o, opts...)
conn, err := cloud.DialGRPC(ctx, o...)
if err != nil {
return nil, fmt.Errorf("dialing: %v", err)
}
return &ClusterAdminClient{
conn: conn,
cClient: btcspb.NewBigtableClusterServiceClient(conn),
project: project,
}, nil
}
// DefaultClientOptions returns the default client options to use for the
// client's gRPC connection.
func DefaultClientOptions(endpoint, scope, userAgent string) ([]cloud.ClientOption, error) {
var o []cloud.ClientOption
// Check the environment variables for the bigtable emulator.
// Dial it directly and don't pass any credentials.
if addr := os.Getenv("BIGTABLE_EMULATOR_HOST"); addr != "" {
conn, err := grpc.Dial(addr, grpc.WithInsecure())
if err != nil {
return nil, fmt.Errorf("emulator grpc.Dial: %v", err)
}
o = []cloud.ClientOption{cloud.WithBaseGRPC(conn)}
} else {
o = []cloud.ClientOption{
cloud.WithEndpoint(endpoint),
cloud.WithScopes(scope),
cloud.WithUserAgent(userAgent),
}
}
return o, nil
}
// NewClient creates a new Google Cloud Storage client.
// The default scope is ScopeFullControl. To use a different scope, like ScopeReadOnly, use cloud.WithScopes.
func NewClient(ctx context.Context, opts ...cloud.ClientOption) (*Client, error) {
o := []cloud.ClientOption{
cloud.WithScopes(ScopeFullControl),
cloud.WithUserAgent(userAgent),
}
opts = append(o, opts...)
hc, _, err := transport.NewHTTPClient(ctx, opts...)
if err != nil {
return nil, fmt.Errorf("dialing: %v", err)
}
rawService, err := raw.New(hc)
if err != nil {
return nil, fmt.Errorf("storage client: %v", err)
}
return &Client{
hc: hc,
raw: rawService,
}, nil
}
// NewAdminClient creates a new AdminClient for a given project, zone and cluster.
func NewAdminClient(ctx context.Context, project, zone, cluster string, opts ...cloud.ClientOption) (*AdminClient, error) {
o := []cloud.ClientOption{
cloud.WithEndpoint(adminAddr),
cloud.WithScopes(AdminScope),
}
o = append(o, opts...)
conn, err := cloud.DialGRPC(ctx, o...)
if err != nil {
return nil, fmt.Errorf("dialing: %v", err)
}
return &AdminClient{
conn: conn,
tClient: bttspb.NewBigtableTableServiceClient(conn),
project: project,
zone: zone,
cluster: cluster,
}, nil
}
// NewClient creates a new Client for a given dataset.
// If the project ID is empty, it is derived from the DATASTORE_PROJECT_ID environment variable.
// If the DATASTORE_EMULATOR_HOST environment variable is set, client will use its value
// to connect to a locally-running datastore emulator.
func NewClient(ctx context.Context, projectID string, opts ...cloud.ClientOption) (*Client, error) {
var o []cloud.ClientOption
// Environment variables for gcd emulator:
// https://cloud.google.com/datastore/docs/tools/datastore-emulator
// If the emulator is available, dial it directly (and don't pass any credentials).
if addr := os.Getenv("DATASTORE_EMULATOR_HOST"); addr != "" {
conn, err := grpc.Dial(addr, grpc.WithInsecure())
if err != nil {
return nil, fmt.Errorf("grpc.Dial: %v", err)
}
o = []cloud.ClientOption{cloud.WithBaseGRPC(conn)}
} else {
o = []cloud.ClientOption{
cloud.WithEndpoint(prodAddr),
cloud.WithScopes(ScopeDatastore),
cloud.WithUserAgent(userAgent),
}
}
// Warn if we see the legacy emulator environment variables.
if os.Getenv("DATASTORE_HOST") != "" && os.Getenv("DATASTORE_EMULATOR_HOST") == "" {
log.Print("WARNING: legacy environment variable DATASTORE_HOST is ignored. Use DATASTORE_EMULATOR_HOST instead.")
}
if os.Getenv("DATASTORE_DATASET") != "" && os.Getenv("DATASTORE_PROJECT_ID") == "" {
log.Print("WARNING: legacy environment variable DATASTORE_DATASET is ignored. Use DATASTORE_PROJECT_ID instead.")
}
if projectID == "" {
projectID = os.Getenv("DATASTORE_PROJECT_ID")
}
if projectID == "" {
return nil, errors.New("datastore: missing project/dataset id")
}
o = append(o, opts...)
conn, err := transport.DialGRPC(ctx, o...)
if err != nil {
return nil, fmt.Errorf("dialing: %v", err)
}
return &Client{
conn: conn,
client: pb.NewDatastoreClient(conn),
dataset: projectID,
}, nil
}
// NewClient creates a new Client for a given project, zone and cluster.
func NewClient(ctx context.Context, project, zone, cluster string, opts ...cloud.ClientOption) (*Client, error) {
o := []cloud.ClientOption{
cloud.WithEndpoint(prodAddr),
cloud.WithScopes(Scope),
cloud.WithUserAgent(clientUserAgent),
}
o = append(o, opts...)
conn, err := transport.DialGRPC(ctx, o...)
if err != nil {
return nil, fmt.Errorf("dialing: %v", err)
}
return &Client{
conn: conn,
client: btspb.NewBigtableServiceClient(conn),
project: project,
zone: zone,
cluster: cluster,
}, nil
}
// NewClient create a new PubSub client.
func NewClient(ctx context.Context, projectID string, opts ...cloud.ClientOption) (*Client, error) {
o := []cloud.ClientOption{
cloud.WithEndpoint(prodAddr),
cloud.WithScopes(raw.PubsubScope, raw.CloudPlatformScope),
cloud.WithUserAgent(userAgent),
}
o = append(o, opts...)
httpClient, endpoint, err := transport.NewHTTPClient(ctx, o...)
if err != nil {
return nil, fmt.Errorf("dialing: %v", err)
}
s, err := newPubSubService(httpClient, endpoint)
c := &Client{
projectID: projectID,
s: s,
}
return c, nil
}
// NewClient constructs a new Client which can perform BigQuery operations.
// Operations performed via the client are billed to the specified GCP project.
func NewClient(ctx context.Context, projectID string, opts ...cloud.ClientOption) (*Client, error) {
o := []cloud.ClientOption{
cloud.WithEndpoint(prodAddr),
cloud.WithScopes(Scope),
cloud.WithUserAgent(userAgent),
}
o = append(o, opts...)
httpClient, endpoint, err := transport.NewHTTPClient(ctx, o...)
if err != nil {
return nil, fmt.Errorf("dialing: %v", err)
}
s, err := newBigqueryService(httpClient, endpoint)
if err != nil {
return nil, fmt.Errorf("constructing bigquery client: %v", err)
}
c := &Client{
service: s,
projectID: projectID,
}
return c, nil
}
// NewClient creates a new Google Stackdriver Trace client.
func NewClient(ctx context.Context, projectID string, opts ...cloud.ClientOption) (*Client, error) {
o := []cloud.ClientOption{
cloud.WithScopes(cloudPlatformScope),
cloud.WithUserAgent(userAgent),
}
o = append(o, opts...)
hc, basePath, err := transport.NewHTTPClient(ctx, o...)
if err != nil {
return nil, fmt.Errorf("creating HTTP client for Google Stackdriver Trace API: %v", err)
}
apiService, err := api.New(hc)
if err != nil {
return nil, fmt.Errorf("creating Google Stackdriver Trace API client: %v", err)
}
if basePath != "" {
// An option set a basepath, so override api.New's default.
apiService.BasePath = basePath
}
return &Client{
service: apiService,
projectID: projectID,
}, nil
}