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// Copyright 2021 Google LLC
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// See the License for the specific language governing permissions and
// limitations under the License.
// Code generated by protoc-gen-go_gapic. DO NOT EDIT.
package servicedirectory
import (
gax ""
gtransport ""
servicedirectorypb ""
var newLookupClientHook clientHook
// LookupCallOptions contains the retry settings for each method of LookupClient.
type LookupCallOptions struct {
ResolveService []gax.CallOption
func defaultLookupClientOptions() []option.ClientOption {
return []option.ClientOption{
func defaultLookupCallOptions() *LookupCallOptions {
return &LookupCallOptions{
ResolveService: []gax.CallOption{
gax.WithRetry(func() gax.Retryer {
return gax.OnCodes([]codes.Code{
}, gax.Backoff{
Initial: 1000 * time.Millisecond,
Max: 60000 * time.Millisecond,
Multiplier: 1.30,
// LookupClient is a client for interacting with Service Directory API.
// Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
type LookupClient struct {
// Connection pool of gRPC connections to the service.
connPool gtransport.ConnPool
// flag to opt out of default deadlines via GOOGLE_API_GO_EXPERIMENTAL_DISABLE_DEFAULT_DEADLINE
disableDeadlines bool
// The gRPC API client.
lookupClient servicedirectorypb.LookupServiceClient
// The call options for this service.
CallOptions *LookupCallOptions
// The x-goog-* metadata to be sent with each request.
xGoogMetadata metadata.MD
// NewLookupClient creates a new lookup service client.
// Service Directory API for looking up service data at runtime.
func NewLookupClient(ctx context.Context, opts ...option.ClientOption) (*LookupClient, error) {
clientOpts := defaultLookupClientOptions()
if newLookupClientHook != nil {
hookOpts, err := newLookupClientHook(ctx, clientHookParams{})
if err != nil {
return nil, err
clientOpts = append(clientOpts, hookOpts...)
disableDeadlines, err := checkDisableDeadlines()
if err != nil {
return nil, err
connPool, err := gtransport.DialPool(ctx, append(clientOpts, opts...)...)
if err != nil {
return nil, err
c := &LookupClient{
connPool: connPool,
disableDeadlines: disableDeadlines,
CallOptions: defaultLookupCallOptions(),
lookupClient: servicedirectorypb.NewLookupServiceClient(connPool),
return c, nil
// Connection returns a connection to the API service.
// Deprecated.
func (c *LookupClient) Connection() *grpc.ClientConn {
return c.connPool.Conn()
// Close closes the connection to the API service. The user should invoke this when
// the client is no longer required.
func (c *LookupClient) Close() error {
return c.connPool.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 *LookupClient) setGoogleClientInfo(keyval ...string) {
kv := append([]string{"gl-go", versionGo()}, keyval...)
kv = append(kv, "gapic", versionClient, "gax", gax.Version, "grpc", grpc.Version)
c.xGoogMetadata = metadata.Pairs("x-goog-api-client", gax.XGoogHeader(kv...))
// ResolveService returns a service and its
// associated endpoints.
// Resolving a service is not considered an active developer method.
func (c *LookupClient) ResolveService(ctx context.Context, req *servicedirectorypb.ResolveServiceRequest, opts ...gax.CallOption) (*servicedirectorypb.ResolveServiceResponse, error) {
if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
cctx, cancel := context.WithTimeout(ctx, 15000*time.Millisecond)
defer cancel()
ctx = cctx
md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName())))
ctx = insertMetadata(ctx, c.xGoogMetadata, md)
opts = append(c.CallOptions.ResolveService[0:len(c.CallOptions.ResolveService):len(c.CallOptions.ResolveService)], opts...)
var resp *servicedirectorypb.ResolveServiceResponse
err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
var err error
resp, err = c.lookupClient.ResolveService(ctx, req, settings.GRPC...)
return err
}, opts...)
if err != nil {
return nil, err
return resp, nil