option

Documentation

Overview

Package option contains options for Google API clients.

Index

• type ClientOption
  • func WithAPIKey(apiKey string) ClientOption
  • func WithCredentials(creds *google.Credentials) ClientOption
  • func WithCredentialsFile(filename string) ClientOption
  • func WithEndpoint(url string) ClientOption
  • func WithGRPCConn(conn *grpc.ClientConn) ClientOption
  • func WithGRPCConnectionPool(size int) ClientOption
  • func WithGRPCDialOption(opt grpc.DialOption) ClientOption
  • func WithHTTPClient(client *http.Client) ClientOption
  • func WithScopes(scope ...string) ClientOption
  • func WithServiceAccountFile(filename string) ClientOption
  • func WithTokenSource(s oauth2.TokenSource) ClientOption
  • func WithUserAgent(ua string) ClientOption
  • func WithoutAuthentication() ClientOption

Types

type ClientOption

type ClientOption interface {
	Apply(*internal.DialSettings)
}

A ClientOption is an option for a Google API client.

func WithAPIKey

func WithAPIKey(apiKey string) ClientOption

WithAPIKey returns a ClientOption that specifies an API key to be used as the basis for authentication.

API Keys can only be used for JSON-over-HTTP APIs, including those under the import path google.golang.org/api/....

func WithCredentials

func WithCredentials(creds *google.Credentials) ClientOption

func WithCredentialsFile

func WithCredentialsFile(filename string) ClientOption

WithCredentialsFile returns a ClientOption that authenticates API calls with the given service account or refresh token JSON credentials file.

func WithEndpoint

func WithEndpoint(url string) ClientOption

WithEndpoint returns a ClientOption that overrides the default endpoint to be used for a service.

func WithGRPCConn

func WithGRPCConn(conn *grpc.ClientConn) ClientOption

WithGRPCConn returns a ClientOption that specifies the gRPC client connection to use as the basis of communications. This option many only be used with services that support gRPC as their communication transport. When used, the WithGRPCConn option takes precedent over all other supplied options.

func WithGRPCConnectionPool

func WithGRPCConnectionPool(size int) ClientOption

WithGRPCConnectionPool returns a ClientOption that creates a pool of gRPC connections that requests will be balanced between. This is an EXPERIMENTAL API and may be changed or removed in the future.

func WithGRPCDialOption

func WithGRPCDialOption(opt grpc.DialOption) ClientOption

WithGRPCDialOption returns a ClientOption that appends a new grpc.DialOption to an underlying gRPC dial. It does not work with WithGRPCConn.

func WithHTTPClient

func WithHTTPClient(client *http.Client) ClientOption

WithHTTPClient returns a ClientOption that specifies the HTTP client to use as the basis of communications. This option may only be used with services that support HTTP as their communication transport. When used, the WithHTTPClient option takes precedent over all other supplied options.

func WithScopes

func WithScopes(scope ...string) ClientOption

WithScopes returns a ClientOption that overrides the default OAuth2 scopes to be used for a service.

func WithServiceAccountFile

func WithServiceAccountFile(filename string) ClientOption

WithServiceAccountFile returns a ClientOption that uses a Google service account credentials file to authenticate.

Deprecated: Use WithCredentialsFile instead.

func WithTokenSource

func WithTokenSource(s oauth2.TokenSource) ClientOption

WithTokenSource returns a ClientOption that specifies an OAuth2 token source to be used as the basis for authentication.

func WithUserAgent

func WithUserAgent(ua string) ClientOption

WithUserAgent returns a ClientOption that sets the User-Agent.

func WithoutAuthentication

func WithoutAuthentication() ClientOption

WithoutAuthentication returns a ClientOption that specifies that no authentication should be used. It is suitable only for testing and for accessing public resources, like public Google Cloud Storage buckets. It is an error to provide both WithoutAuthentication and any of WithAPIKey, WithTokenSource, WithCredentialsFile or WithServiceAccountFile.