/
custom_op_init.want
118 lines (99 loc) · 3.54 KB
/
custom_op_init.want
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// internalClient is an interface that defines the methods availaible from Awesome Foo API.
type internalClient interface {
Close() error
setGoogleClientInfo(...string)
Connection() *grpc.ClientConn
Zip(context.Context, *mypackagepb.Bar, ...gax.CallOption) (*Operation, error)
}
// Client is a client for interacting with Awesome Foo API.
// Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
//
// Foo service does stuff.
type Client struct {
// The internal transport-dependent client.
internalClient internalClient
// The call options for this service.
CallOptions *CallOptions
}
// Wrapper methods routed to the internal client.
// Close closes the connection to the API service. The user should invoke this when
// the client is no longer required.
func (c *Client) Close() error {
return c.internalClient.Close()
}
// setGoogleClientInfo sets the name and version of the application in
// the `x-goog-api-client` header passed on each request. Intended for
// use by Google-written clients.
func (c *Client) setGoogleClientInfo(keyval ...string) {
c.internalClient.setGoogleClientInfo(keyval...)
}
// Connection returns a connection to the API service.
//
// Deprecated.
func (c *Client) Connection() *grpc.ClientConn {
return c.internalClient.Connection()
}
// Zip does some stuff.
func (c *Client) Zip(ctx context.Context, req *mypackagepb.Bar, opts ...gax.CallOption) (*Operation, error) {
return c.internalClient.Zip(ctx, req, opts...)
}
// Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
type restClient struct {
// The http endpoint to connect to.
endpoint string
// The http client.
httpClient *http.Client
// operationClient is used to call the operation-specific management service.
operationClient *FooOperationClient
// The x-goog-* metadata to be sent with each request.
xGoogMetadata metadata.MD
}
// NewRESTClient creates a new foo rest client.
//
// Foo service does stuff.
func NewRESTClient(ctx context.Context, opts ...option.ClientOption) (*Client, error) {
clientOpts := append(defaultRESTClientOptions(), opts...)
httpClient, endpoint, err := httptransport.NewClient(ctx, clientOpts...)
if err != nil {
return nil, err
}
c := &restClient{
endpoint: endpoint,
httpClient: httpClient,
}
c.setGoogleClientInfo()
o := []option.ClientOption{
option.WithHTTPClient(httpClient),
option.WithEndpoint(endpoint),
}
opC, err := NewFooOperationRESTClient(ctx, o...)
if err != nil {
return nil, err
}
c.operationClient = opC
return &Client{internalClient: c, CallOptions: &CallOptions{}}, nil
}
// setGoogleClientInfo sets the name and version of the application in
// the `x-goog-api-client` header passed on each request. Intended for
// use by Google-written clients.
func (c *restClient) setGoogleClientInfo(keyval ...string) {
kv := append([]string{"gl-go", versionGo()}, keyval...)
kv = append(kv, "gapic", getVersionClient(), "gax", gax.Version, "rest", "UNKNOWN")
c.xGoogMetadata = metadata.Pairs("x-goog-api-client", gax.XGoogHeader(kv...))
}
// Close closes the connection to the API service. The user should invoke this when
// the client is no longer required.
func (c *restClient) Close() error {
// Replace httpClient with nil to force cleanup.
c.httpClient = nil
if err := c.operationClient.Close(); err != nil {
return err
}
return nil
}
// Connection returns a connection to the API service.
//
// Deprecated.
func (c *restClient) Connection() *grpc.ClientConn {
return nil
}