essentialcontacts/apiv1/essential_contacts_client.go - gocloud - Git at Google

 // 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
 //
 //     https://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // 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 essentialcontacts

 import (
 	"context"
 	"fmt"
 	"math"
 	"net/url"
 	"time"

 	gax "github.com/googleapis/gax-go/v2"
 	"google.golang.org/api/iterator"
 	"google.golang.org/api/option"
 	"google.golang.org/api/option/internaloption"
 	gtransport "google.golang.org/api/transport/grpc"
 	essentialcontactspb "google.golang.org/genproto/googleapis/cloud/essentialcontacts/v1"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/metadata"
 	"google.golang.org/protobuf/proto"
 )

 var newClientHook clientHook

 // CallOptions contains the retry settings for each method of Client.
 type CallOptions struct {
 	CreateContact   []gax.CallOption
 	UpdateContact   []gax.CallOption
 	ListContacts    []gax.CallOption
 	GetContact      []gax.CallOption
 	DeleteContact   []gax.CallOption
 	ComputeContacts []gax.CallOption
 	SendTestMessage []gax.CallOption
 }

 func defaultGRPCClientOptions() []option.ClientOption {
 	return []option.ClientOption{
 		internaloption.WithDefaultEndpoint("essentialcontacts.googleapis.com:443"),
 		internaloption.WithDefaultMTLSEndpoint("essentialcontacts.mtls.googleapis.com:443"),
 		internaloption.WithDefaultAudience("https://essentialcontacts.googleapis.com/"),
 		internaloption.WithDefaultScopes(DefaultAuthScopes()...),
 		internaloption.EnableJwtWithScope(),
 		option.WithGRPCDialOption(grpc.WithDisableServiceConfig()),
 		option.WithGRPCDialOption(grpc.WithDefaultCallOptions(
 			grpc.MaxCallRecvMsgSize(math.MaxInt32))),
 	}
 }

 func defaultCallOptions() *CallOptions {
 	return &CallOptions{
 		CreateContact: []gax.CallOption{},
 		UpdateContact: []gax.CallOption{},
 		ListContacts: []gax.CallOption{
 			gax.WithRetry(func() gax.Retryer {
 				return gax.OnCodes([]codes.Code{
 					codes.Unavailable,
 				}, gax.Backoff{
 					Initial:    1000 * time.Millisecond,
 					Max:        10000 * time.Millisecond,
 					Multiplier: 1.30,
 				})
 			}),
 		},
 		GetContact: []gax.CallOption{
 			gax.WithRetry(func() gax.Retryer {
 				return gax.OnCodes([]codes.Code{
 					codes.Unavailable,
 				}, gax.Backoff{
 					Initial:    1000 * time.Millisecond,
 					Max:        10000 * time.Millisecond,
 					Multiplier: 1.30,
 				})
 			}),
 		},
 		DeleteContact:   []gax.CallOption{},
 		ComputeContacts: []gax.CallOption{},
 		SendTestMessage: []gax.CallOption{},
 	}
 }

 // internalClient is an interface that defines the methods availaible from Essential Contacts API.
 type internalClient interface {
 	Close() error
 	setGoogleClientInfo(...string)
 	Connection() *grpc.ClientConn
 	CreateContact(context.Context, *essentialcontactspb.CreateContactRequest, ...gax.CallOption) (*essentialcontactspb.Contact, error)
 	UpdateContact(context.Context, *essentialcontactspb.UpdateContactRequest, ...gax.CallOption) (*essentialcontactspb.Contact, error)
 	ListContacts(context.Context, *essentialcontactspb.ListContactsRequest, ...gax.CallOption) *ContactIterator
 	GetContact(context.Context, *essentialcontactspb.GetContactRequest, ...gax.CallOption) (*essentialcontactspb.Contact, error)
 	DeleteContact(context.Context, *essentialcontactspb.DeleteContactRequest, ...gax.CallOption) error
 	ComputeContacts(context.Context, *essentialcontactspb.ComputeContactsRequest, ...gax.CallOption) *ContactIterator
 	SendTestMessage(context.Context, *essentialcontactspb.SendTestMessageRequest, ...gax.CallOption) error
 }

 // Client is a client for interacting with Essential Contacts API.
 // Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
 //
 // Manages contacts for important Google Cloud notifications.
 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()
 }

 // CreateContact adds a new contact for a resource.
 func (c *Client) CreateContact(ctx context.Context, req *essentialcontactspb.CreateContactRequest, opts ...gax.CallOption) (*essentialcontactspb.Contact, error) {
 	return c.internalClient.CreateContact(ctx, req, opts...)
 }

 // UpdateContact updates a contact.
 // Note: A contact’s email address cannot be changed.
 func (c *Client) UpdateContact(ctx context.Context, req *essentialcontactspb.UpdateContactRequest, opts ...gax.CallOption) (*essentialcontactspb.Contact, error) {
 	return c.internalClient.UpdateContact(ctx, req, opts...)
 }

 // ListContacts lists the contacts that have been set on a resource.
 func (c *Client) ListContacts(ctx context.Context, req *essentialcontactspb.ListContactsRequest, opts ...gax.CallOption) *ContactIterator {
 	return c.internalClient.ListContacts(ctx, req, opts...)
 }

 // GetContact gets a single contact.
 func (c *Client) GetContact(ctx context.Context, req *essentialcontactspb.GetContactRequest, opts ...gax.CallOption) (*essentialcontactspb.Contact, error) {
 	return c.internalClient.GetContact(ctx, req, opts...)
 }

 // DeleteContact deletes a contact.
 func (c *Client) DeleteContact(ctx context.Context, req *essentialcontactspb.DeleteContactRequest, opts ...gax.CallOption) error {
 	return c.internalClient.DeleteContact(ctx, req, opts...)
 }

 // ComputeContacts lists all contacts for the resource that are subscribed to the
 // specified notification categories, including contacts inherited from
 // any parent resources.
 func (c *Client) ComputeContacts(ctx context.Context, req *essentialcontactspb.ComputeContactsRequest, opts ...gax.CallOption) *ContactIterator {
 	return c.internalClient.ComputeContacts(ctx, req, opts...)
 }

 // SendTestMessage allows a contact admin to send a test message to contact to verify that it
 // has been configured correctly.
 func (c *Client) SendTestMessage(ctx context.Context, req *essentialcontactspb.SendTestMessageRequest, opts ...gax.CallOption) error {
 	return c.internalClient.SendTestMessage(ctx, req, opts...)
 }

 // gRPCClient is a client for interacting with Essential Contacts API over gRPC transport.
 //
 // Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
 type gRPCClient 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

 	// Points back to the CallOptions field of the containing Client
 	CallOptions **CallOptions

 	// The gRPC API client.
 	client essentialcontactspb.EssentialContactsServiceClient

 	// The x-goog-* metadata to be sent with each request.
 	xGoogMetadata metadata.MD
 }

 // NewClient creates a new essential contacts service client based on gRPC.
 // The returned client must be Closed when it is done being used to clean up its underlying connections.
 //
 // Manages contacts for important Google Cloud notifications.
 func NewClient(ctx context.Context, opts ...option.ClientOption) (*Client, error) {
 	clientOpts := defaultGRPCClientOptions()
 	if newClientHook != nil {
 		hookOpts, err := newClientHook(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
 	}
 	client := Client{CallOptions: defaultCallOptions()}

 	c := &gRPCClient{
 		connPool:         connPool,
 		disableDeadlines: disableDeadlines,
 		client:           essentialcontactspb.NewEssentialContactsServiceClient(connPool),
 		CallOptions:      &client.CallOptions,
 	}
 	c.setGoogleClientInfo()

 	client.internalClient = c

 	return &client, nil
 }

 // Connection returns a connection to the API service.
 //
 // Deprecated.
 func (c *gRPCClient) Connection() *grpc.ClientConn {
 	return c.connPool.Conn()
 }

 // 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 *gRPCClient) 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...))
 }

 // Close closes the connection to the API service. The user should invoke this when
 // the client is no longer required.
 func (c *gRPCClient) Close() error {
 	return c.connPool.Close()
 }

 func (c *gRPCClient) CreateContact(ctx context.Context, req *essentialcontactspb.CreateContactRequest, opts ...gax.CallOption) (*essentialcontactspb.Contact, error) {
 	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
 		cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
 		defer cancel()
 		ctx = cctx
 	}
 	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent())))
 	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
 	opts = append((*c.CallOptions).CreateContact[0:len((*c.CallOptions).CreateContact):len((*c.CallOptions).CreateContact)], opts...)
 	var resp *essentialcontactspb.Contact
 	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
 		var err error
 		resp, err = c.client.CreateContact(ctx, req, settings.GRPC...)
 		return err
 	}, opts...)
 	if err != nil {
 		return nil, err
 	}
 	return resp, nil
 }

 func (c *gRPCClient) UpdateContact(ctx context.Context, req *essentialcontactspb.UpdateContactRequest, opts ...gax.CallOption) (*essentialcontactspb.Contact, error) {
 	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
 		cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
 		defer cancel()
 		ctx = cctx
 	}
 	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "contact.name", url.QueryEscape(req.GetContact().GetName())))
 	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
 	opts = append((*c.CallOptions).UpdateContact[0:len((*c.CallOptions).UpdateContact):len((*c.CallOptions).UpdateContact)], opts...)
 	var resp *essentialcontactspb.Contact
 	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
 		var err error
 		resp, err = c.client.UpdateContact(ctx, req, settings.GRPC...)
 		return err
 	}, opts...)
 	if err != nil {
 		return nil, err
 	}
 	return resp, nil
 }

 func (c *gRPCClient) ListContacts(ctx context.Context, req *essentialcontactspb.ListContactsRequest, opts ...gax.CallOption) *ContactIterator {
 	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent())))
 	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
 	opts = append((*c.CallOptions).ListContacts[0:len((*c.CallOptions).ListContacts):len((*c.CallOptions).ListContacts)], opts...)
 	it := &ContactIterator{}
 	req = proto.Clone(req).(*essentialcontactspb.ListContactsRequest)
 	it.InternalFetch = func(pageSize int, pageToken string) ([]*essentialcontactspb.Contact, string, error) {
 		var resp *essentialcontactspb.ListContactsResponse
 		req.PageToken = pageToken
 		if pageSize > math.MaxInt32 {
 			req.PageSize = math.MaxInt32
 		} else {
 			req.PageSize = int32(pageSize)
 		}
 		err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
 			var err error
 			resp, err = c.client.ListContacts(ctx, req, settings.GRPC...)
 			return err
 		}, opts...)
 		if err != nil {
 			return nil, "", err
 		}

 		it.Response = resp
 		return resp.GetContacts(), resp.GetNextPageToken(), nil
 	}
 	fetch := func(pageSize int, pageToken string) (string, error) {
 		items, nextPageToken, err := it.InternalFetch(pageSize, pageToken)
 		if err != nil {
 			return "", err
 		}
 		it.items = append(it.items, items...)
 		return nextPageToken, nil
 	}
 	it.pageInfo, it.nextFunc = iterator.NewPageInfo(fetch, it.bufLen, it.takeBuf)
 	it.pageInfo.MaxSize = int(req.GetPageSize())
 	it.pageInfo.Token = req.GetPageToken()
 	return it
 }

 func (c *gRPCClient) GetContact(ctx context.Context, req *essentialcontactspb.GetContactRequest, opts ...gax.CallOption) (*essentialcontactspb.Contact, error) {
 	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
 		cctx, cancel := context.WithTimeout(ctx, 60000*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).GetContact[0:len((*c.CallOptions).GetContact):len((*c.CallOptions).GetContact)], opts...)
 	var resp *essentialcontactspb.Contact
 	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
 		var err error
 		resp, err = c.client.GetContact(ctx, req, settings.GRPC...)
 		return err
 	}, opts...)
 	if err != nil {
 		return nil, err
 	}
 	return resp, nil
 }

 func (c *gRPCClient) DeleteContact(ctx context.Context, req *essentialcontactspb.DeleteContactRequest, opts ...gax.CallOption) error {
 	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
 		cctx, cancel := context.WithTimeout(ctx, 60000*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).DeleteContact[0:len((*c.CallOptions).DeleteContact):len((*c.CallOptions).DeleteContact)], opts...)
 	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
 		var err error
 		_, err = c.client.DeleteContact(ctx, req, settings.GRPC...)
 		return err
 	}, opts...)
 	return err
 }

 func (c *gRPCClient) ComputeContacts(ctx context.Context, req *essentialcontactspb.ComputeContactsRequest, opts ...gax.CallOption) *ContactIterator {
 	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent())))
 	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
 	opts = append((*c.CallOptions).ComputeContacts[0:len((*c.CallOptions).ComputeContacts):len((*c.CallOptions).ComputeContacts)], opts...)
 	it := &ContactIterator{}
 	req = proto.Clone(req).(*essentialcontactspb.ComputeContactsRequest)
 	it.InternalFetch = func(pageSize int, pageToken string) ([]*essentialcontactspb.Contact, string, error) {
 		var resp *essentialcontactspb.ComputeContactsResponse
 		req.PageToken = pageToken
 		if pageSize > math.MaxInt32 {
 			req.PageSize = math.MaxInt32
 		} else {
 			req.PageSize = int32(pageSize)
 		}
 		err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
 			var err error
 			resp, err = c.client.ComputeContacts(ctx, req, settings.GRPC...)
 			return err
 		}, opts...)
 		if err != nil {
 			return nil, "", err
 		}

 		it.Response = resp
 		return resp.GetContacts(), resp.GetNextPageToken(), nil
 	}
 	fetch := func(pageSize int, pageToken string) (string, error) {
 		items, nextPageToken, err := it.InternalFetch(pageSize, pageToken)
 		if err != nil {
 			return "", err
 		}
 		it.items = append(it.items, items...)
 		return nextPageToken, nil
 	}
 	it.pageInfo, it.nextFunc = iterator.NewPageInfo(fetch, it.bufLen, it.takeBuf)
 	it.pageInfo.MaxSize = int(req.GetPageSize())
 	it.pageInfo.Token = req.GetPageToken()
 	return it
 }

 func (c *gRPCClient) SendTestMessage(ctx context.Context, req *essentialcontactspb.SendTestMessageRequest, opts ...gax.CallOption) error {
 	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
 		cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
 		defer cancel()
 		ctx = cctx
 	}
 	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "resource", url.QueryEscape(req.GetResource())))
 	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
 	opts = append((*c.CallOptions).SendTestMessage[0:len((*c.CallOptions).SendTestMessage):len((*c.CallOptions).SendTestMessage)], opts...)
 	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
 		var err error
 		_, err = c.client.SendTestMessage(ctx, req, settings.GRPC...)
 		return err
 	}, opts...)
 	return err
 }

 // ContactIterator manages a stream of *essentialcontactspb.Contact.
 type ContactIterator struct {
 	items    []*essentialcontactspb.Contact
 	pageInfo *iterator.PageInfo
 	nextFunc func() error

 	// Response is the raw response for the current page.
 	// It must be cast to the RPC response type.
 	// Calling Next() or InternalFetch() updates this value.
 	Response interface{}

 	// InternalFetch is for use by the Google Cloud Libraries only.
 	// It is not part of the stable interface of this package.
 	//
 	// InternalFetch returns results from a single call to the underlying RPC.
 	// The number of results is no greater than pageSize.
 	// If there are no more results, nextPageToken is empty and err is nil.
 	InternalFetch func(pageSize int, pageToken string) (results []*essentialcontactspb.Contact, nextPageToken string, err error)
 }

 // PageInfo supports pagination. See the google.golang.org/api/iterator package for details.
 func (it *ContactIterator) PageInfo() *iterator.PageInfo {
 	return it.pageInfo
 }

 // Next returns the next result. Its second return value is iterator.Done if there are no more
 // results. Once Next returns Done, all subsequent calls will return Done.
 func (it *ContactIterator) Next() (*essentialcontactspb.Contact, error) {
 	var item *essentialcontactspb.Contact
 	if err := it.nextFunc(); err != nil {
 		return item, err
 	}
 	item = it.items[0]
 	it.items = it.items[1:]
 	return item, nil
 }

 func (it *ContactIterator) bufLen() int {
 	return len(it.items)
 }

 func (it *ContactIterator) takeBuf() interface{} {
 	b := it.items
 	it.items = nil
 	return b
 }
	// 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
	//
	// https://www.apache.org/licenses/LICENSE-2.0
	//
	// Unless required by applicable law or agreed to in writing, software
	// distributed under the License is distributed on an "AS IS" BASIS,
	// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	// 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 essentialcontacts

	import (
	"context"
	"fmt"
	"math"
	"net/url"
	"time"

	gax "github.com/googleapis/gax-go/v2"
	"google.golang.org/api/iterator"
	"google.golang.org/api/option"
	"google.golang.org/api/option/internaloption"
	gtransport "google.golang.org/api/transport/grpc"
	essentialcontactspb "google.golang.org/genproto/googleapis/cloud/essentialcontacts/v1"
	"google.golang.org/grpc"
	"google.golang.org/grpc/codes"
	"google.golang.org/grpc/metadata"
	"google.golang.org/protobuf/proto"
	)

	var newClientHook clientHook

	// CallOptions contains the retry settings for each method of Client.
	type CallOptions struct {
	CreateContact []gax.CallOption
	UpdateContact []gax.CallOption
	ListContacts []gax.CallOption
	GetContact []gax.CallOption
	DeleteContact []gax.CallOption
	ComputeContacts []gax.CallOption
	SendTestMessage []gax.CallOption
	}

	func defaultGRPCClientOptions() []option.ClientOption {
	return []option.ClientOption{
	internaloption.WithDefaultEndpoint("essentialcontacts.googleapis.com:443"),
	internaloption.WithDefaultMTLSEndpoint("essentialcontacts.mtls.googleapis.com:443"),
	internaloption.WithDefaultAudience("https://essentialcontacts.googleapis.com/"),
	internaloption.WithDefaultScopes(DefaultAuthScopes()...),
	internaloption.EnableJwtWithScope(),
	option.WithGRPCDialOption(grpc.WithDisableServiceConfig()),
	option.WithGRPCDialOption(grpc.WithDefaultCallOptions(
	grpc.MaxCallRecvMsgSize(math.MaxInt32))),
	}
	}

	func defaultCallOptions() *CallOptions {
	return &CallOptions{
	CreateContact: []gax.CallOption{},
	UpdateContact: []gax.CallOption{},
	ListContacts: []gax.CallOption{
	gax.WithRetry(func() gax.Retryer {
	return gax.OnCodes([]codes.Code{
	codes.Unavailable,
	}, gax.Backoff{
	Initial: 1000 * time.Millisecond,
	Max: 10000 * time.Millisecond,
	Multiplier: 1.30,
	})
	}),
	},
	GetContact: []gax.CallOption{
	gax.WithRetry(func() gax.Retryer {
	return gax.OnCodes([]codes.Code{
	codes.Unavailable,
	}, gax.Backoff{
	Initial: 1000 * time.Millisecond,
	Max: 10000 * time.Millisecond,
	Multiplier: 1.30,
	})
	}),
	},
	DeleteContact: []gax.CallOption{},
	ComputeContacts: []gax.CallOption{},
	SendTestMessage: []gax.CallOption{},
	}
	}

	// internalClient is an interface that defines the methods availaible from Essential Contacts API.
	type internalClient interface {
	Close() error
	setGoogleClientInfo(...string)
	Connection() *grpc.ClientConn
	CreateContact(context.Context, essentialcontactspb.CreateContactRequest, ...gax.CallOption) (essentialcontactspb.Contact, error)
	UpdateContact(context.Context, essentialcontactspb.UpdateContactRequest, ...gax.CallOption) (essentialcontactspb.Contact, error)
	ListContacts(context.Context, essentialcontactspb.ListContactsRequest, ...gax.CallOption) ContactIterator
	GetContact(context.Context, essentialcontactspb.GetContactRequest, ...gax.CallOption) (essentialcontactspb.Contact, error)
	DeleteContact(context.Context, *essentialcontactspb.DeleteContactRequest, ...gax.CallOption) error
	ComputeContacts(context.Context, essentialcontactspb.ComputeContactsRequest, ...gax.CallOption) ContactIterator
	SendTestMessage(context.Context, *essentialcontactspb.SendTestMessageRequest, ...gax.CallOption) error
	}

	// Client is a client for interacting with Essential Contacts API.
	// Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
	//
	// Manages contacts for important Google Cloud notifications.
	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()
	}

	// CreateContact adds a new contact for a resource.
	func (c Client) CreateContact(ctx context.Context, req essentialcontactspb.CreateContactRequest, opts ...gax.CallOption) (*essentialcontactspb.Contact, error) {
	return c.internalClient.CreateContact(ctx, req, opts...)
	}

	// UpdateContact updates a contact.
	// Note: A contact’s email address cannot be changed.
	func (c Client) UpdateContact(ctx context.Context, req essentialcontactspb.UpdateContactRequest, opts ...gax.CallOption) (*essentialcontactspb.Contact, error) {
	return c.internalClient.UpdateContact(ctx, req, opts...)
	}

	// ListContacts lists the contacts that have been set on a resource.
	func (c Client) ListContacts(ctx context.Context, req essentialcontactspb.ListContactsRequest, opts ...gax.CallOption) *ContactIterator {
	return c.internalClient.ListContacts(ctx, req, opts...)
	}

	// GetContact gets a single contact.
	func (c Client) GetContact(ctx context.Context, req essentialcontactspb.GetContactRequest, opts ...gax.CallOption) (*essentialcontactspb.Contact, error) {
	return c.internalClient.GetContact(ctx, req, opts...)
	}

	// DeleteContact deletes a contact.
	func (c Client) DeleteContact(ctx context.Context, req essentialcontactspb.DeleteContactRequest, opts ...gax.CallOption) error {
	return c.internalClient.DeleteContact(ctx, req, opts...)
	}

	// ComputeContacts lists all contacts for the resource that are subscribed to the
	// specified notification categories, including contacts inherited from
	// any parent resources.
	func (c Client) ComputeContacts(ctx context.Context, req essentialcontactspb.ComputeContactsRequest, opts ...gax.CallOption) *ContactIterator {
	return c.internalClient.ComputeContacts(ctx, req, opts...)
	}

	// SendTestMessage allows a contact admin to send a test message to contact to verify that it
	// has been configured correctly.
	func (c Client) SendTestMessage(ctx context.Context, req essentialcontactspb.SendTestMessageRequest, opts ...gax.CallOption) error {
	return c.internalClient.SendTestMessage(ctx, req, opts...)
	}

	// gRPCClient is a client for interacting with Essential Contacts API over gRPC transport.
	//
	// Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
	type gRPCClient 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

	// Points back to the CallOptions field of the containing Client
	CallOptions **CallOptions

	// The gRPC API client.
	client essentialcontactspb.EssentialContactsServiceClient

	// The x-goog-* metadata to be sent with each request.
	xGoogMetadata metadata.MD
	}

	// NewClient creates a new essential contacts service client based on gRPC.
	// The returned client must be Closed when it is done being used to clean up its underlying connections.
	//
	// Manages contacts for important Google Cloud notifications.
	func NewClient(ctx context.Context, opts ...option.ClientOption) (*Client, error) {
	clientOpts := defaultGRPCClientOptions()
	if newClientHook != nil {
	hookOpts, err := newClientHook(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
	}
	client := Client{CallOptions: defaultCallOptions()}

	c := &gRPCClient{
	connPool: connPool,
	disableDeadlines: disableDeadlines,
	client: essentialcontactspb.NewEssentialContactsServiceClient(connPool),
	CallOptions: &client.CallOptions,
	}
	c.setGoogleClientInfo()

	client.internalClient = c

	return &client, nil
	}

	// Connection returns a connection to the API service.
	//
	// Deprecated.
	func (c gRPCClient) Connection() grpc.ClientConn {
	return c.connPool.Conn()
	}

	// 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 *gRPCClient) 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...))
	}

	// Close closes the connection to the API service. The user should invoke this when
	// the client is no longer required.
	func (c *gRPCClient) Close() error {
	return c.connPool.Close()
	}

	func (c gRPCClient) CreateContact(ctx context.Context, req essentialcontactspb.CreateContactRequest, opts ...gax.CallOption) (*essentialcontactspb.Contact, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
	cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
	defer cancel()
	ctx = cctx
	}
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((c.CallOptions).CreateContact[0:len((c.CallOptions).CreateContact):len((*c.CallOptions).CreateContact)], opts...)
	var resp *essentialcontactspb.Contact
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
	var err error
	resp, err = c.client.CreateContact(ctx, req, settings.GRPC...)
	return err
	}, opts...)
	if err != nil {
	return nil, err
	}
	return resp, nil
	}

	func (c gRPCClient) UpdateContact(ctx context.Context, req essentialcontactspb.UpdateContactRequest, opts ...gax.CallOption) (*essentialcontactspb.Contact, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
	cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
	defer cancel()
	ctx = cctx
	}
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "contact.name", url.QueryEscape(req.GetContact().GetName())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((c.CallOptions).UpdateContact[0:len((c.CallOptions).UpdateContact):len((*c.CallOptions).UpdateContact)], opts...)
	var resp *essentialcontactspb.Contact
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
	var err error
	resp, err = c.client.UpdateContact(ctx, req, settings.GRPC...)
	return err
	}, opts...)
	if err != nil {
	return nil, err
	}
	return resp, nil
	}

	func (c gRPCClient) ListContacts(ctx context.Context, req essentialcontactspb.ListContactsRequest, opts ...gax.CallOption) *ContactIterator {
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((c.CallOptions).ListContacts[0:len((c.CallOptions).ListContacts):len((*c.CallOptions).ListContacts)], opts...)
	it := &ContactIterator{}
	req = proto.Clone(req).(*essentialcontactspb.ListContactsRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*essentialcontactspb.Contact, string, error) {
	var resp *essentialcontactspb.ListContactsResponse
	req.PageToken = pageToken
	if pageSize > math.MaxInt32 {
	req.PageSize = math.MaxInt32
	} else {
	req.PageSize = int32(pageSize)
	}
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
	var err error
	resp, err = c.client.ListContacts(ctx, req, settings.GRPC...)
	return err
	}, opts...)
	if err != nil {
	return nil, "", err
	}

	it.Response = resp
	return resp.GetContacts(), resp.GetNextPageToken(), nil
	}
	fetch := func(pageSize int, pageToken string) (string, error) {
	items, nextPageToken, err := it.InternalFetch(pageSize, pageToken)
	if err != nil {
	return "", err
	}
	it.items = append(it.items, items...)
	return nextPageToken, nil
	}
	it.pageInfo, it.nextFunc = iterator.NewPageInfo(fetch, it.bufLen, it.takeBuf)
	it.pageInfo.MaxSize = int(req.GetPageSize())
	it.pageInfo.Token = req.GetPageToken()
	return it
	}

	func (c gRPCClient) GetContact(ctx context.Context, req essentialcontactspb.GetContactRequest, opts ...gax.CallOption) (*essentialcontactspb.Contact, error) {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
	cctx, cancel := context.WithTimeout(ctx, 60000*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).GetContact[0:len((c.CallOptions).GetContact):len((*c.CallOptions).GetContact)], opts...)
	var resp *essentialcontactspb.Contact
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
	var err error
	resp, err = c.client.GetContact(ctx, req, settings.GRPC...)
	return err
	}, opts...)
	if err != nil {
	return nil, err
	}
	return resp, nil
	}

	func (c gRPCClient) DeleteContact(ctx context.Context, req essentialcontactspb.DeleteContactRequest, opts ...gax.CallOption) error {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
	cctx, cancel := context.WithTimeout(ctx, 60000*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).DeleteContact[0:len((c.CallOptions).DeleteContact):len((*c.CallOptions).DeleteContact)], opts...)
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
	var err error
	_, err = c.client.DeleteContact(ctx, req, settings.GRPC...)
	return err
	}, opts...)
	return err
	}

	func (c gRPCClient) ComputeContacts(ctx context.Context, req essentialcontactspb.ComputeContactsRequest, opts ...gax.CallOption) *ContactIterator {
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((c.CallOptions).ComputeContacts[0:len((c.CallOptions).ComputeContacts):len((*c.CallOptions).ComputeContacts)], opts...)
	it := &ContactIterator{}
	req = proto.Clone(req).(*essentialcontactspb.ComputeContactsRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*essentialcontactspb.Contact, string, error) {
	var resp *essentialcontactspb.ComputeContactsResponse
	req.PageToken = pageToken
	if pageSize > math.MaxInt32 {
	req.PageSize = math.MaxInt32
	} else {
	req.PageSize = int32(pageSize)
	}
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
	var err error
	resp, err = c.client.ComputeContacts(ctx, req, settings.GRPC...)
	return err
	}, opts...)
	if err != nil {
	return nil, "", err
	}

	it.Response = resp
	return resp.GetContacts(), resp.GetNextPageToken(), nil
	}
	fetch := func(pageSize int, pageToken string) (string, error) {
	items, nextPageToken, err := it.InternalFetch(pageSize, pageToken)
	if err != nil {
	return "", err
	}
	it.items = append(it.items, items...)
	return nextPageToken, nil
	}
	it.pageInfo, it.nextFunc = iterator.NewPageInfo(fetch, it.bufLen, it.takeBuf)
	it.pageInfo.MaxSize = int(req.GetPageSize())
	it.pageInfo.Token = req.GetPageToken()
	return it
	}

	func (c gRPCClient) SendTestMessage(ctx context.Context, req essentialcontactspb.SendTestMessageRequest, opts ...gax.CallOption) error {
	if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
	cctx, cancel := context.WithTimeout(ctx, 60000*time.Millisecond)
	defer cancel()
	ctx = cctx
	}
	md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "resource", url.QueryEscape(req.GetResource())))
	ctx = insertMetadata(ctx, c.xGoogMetadata, md)
	opts = append((c.CallOptions).SendTestMessage[0:len((c.CallOptions).SendTestMessage):len((*c.CallOptions).SendTestMessage)], opts...)
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
	var err error
	_, err = c.client.SendTestMessage(ctx, req, settings.GRPC...)
	return err
	}, opts...)
	return err
	}

	// ContactIterator manages a stream of *essentialcontactspb.Contact.
	type ContactIterator struct {
	items []*essentialcontactspb.Contact
	pageInfo *iterator.PageInfo
	nextFunc func() error

	// Response is the raw response for the current page.
	// It must be cast to the RPC response type.
	// Calling Next() or InternalFetch() updates this value.
	Response interface{}

	// InternalFetch is for use by the Google Cloud Libraries only.
	// It is not part of the stable interface of this package.
	//
	// InternalFetch returns results from a single call to the underlying RPC.
	// The number of results is no greater than pageSize.
	// If there are no more results, nextPageToken is empty and err is nil.
	InternalFetch func(pageSize int, pageToken string) (results []*essentialcontactspb.Contact, nextPageToken string, err error)
	}

	// PageInfo supports pagination. See the google.golang.org/api/iterator package for details.
	func (it ContactIterator) PageInfo() iterator.PageInfo {
	return it.pageInfo
	}

	// Next returns the next result. Its second return value is iterator.Done if there are no more
	// results. Once Next returns Done, all subsequent calls will return Done.
	func (it ContactIterator) Next() (essentialcontactspb.Contact, error) {
	var item *essentialcontactspb.Contact
	if err := it.nextFunc(); err != nil {
	return item, err
	}
	item = it.items[0]
	it.items = it.items[1:]
	return item, nil
	}

	func (it *ContactIterator) bufLen() int {
	return len(it.items)
	}

	func (it *ContactIterator) takeBuf() interface{} {
	b := it.items
	it.items = nil
	return b
	}