// Copyright 2024 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 networkconnectivity

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

	iampb "cloud.google.com/go/iam/apiv1/iampb"
	"cloud.google.com/go/longrunning"
	lroauto "cloud.google.com/go/longrunning/autogen"
	longrunningpb "cloud.google.com/go/longrunning/autogen/longrunningpb"
	networkconnectivitypb "cloud.google.com/go/networkconnectivity/apiv1/networkconnectivitypb"
	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"
	locationpb "google.golang.org/genproto/googleapis/cloud/location"
	"google.golang.org/grpc"
	"google.golang.org/grpc/codes"
	"google.golang.org/protobuf/proto"
)

var newHubClientHook clientHook

// HubCallOptions contains the retry settings for each method of HubClient.
type HubCallOptions struct {
	ListHubs           []gax.CallOption
	GetHub             []gax.CallOption
	CreateHub          []gax.CallOption
	UpdateHub          []gax.CallOption
	DeleteHub          []gax.CallOption
	ListHubSpokes      []gax.CallOption
	ListSpokes         []gax.CallOption
	GetSpoke           []gax.CallOption
	CreateSpoke        []gax.CallOption
	UpdateSpoke        []gax.CallOption
	RejectHubSpoke     []gax.CallOption
	AcceptHubSpoke     []gax.CallOption
	DeleteSpoke        []gax.CallOption
	GetRouteTable      []gax.CallOption
	GetRoute           []gax.CallOption
	ListRoutes         []gax.CallOption
	ListRouteTables    []gax.CallOption
	GetGroup           []gax.CallOption
	ListGroups         []gax.CallOption
	GetLocation        []gax.CallOption
	ListLocations      []gax.CallOption
	GetIamPolicy       []gax.CallOption
	SetIamPolicy       []gax.CallOption
	TestIamPermissions []gax.CallOption
	CancelOperation    []gax.CallOption
	DeleteOperation    []gax.CallOption
	GetOperation       []gax.CallOption
	ListOperations     []gax.CallOption
}

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

func defaultHubCallOptions() *HubCallOptions {
	return &HubCallOptions{
		ListHubs: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
			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,
				})
			}),
		},
		GetHub: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
			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,
				})
			}),
		},
		CreateHub: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
		},
		UpdateHub: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
		},
		DeleteHub: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
		},
		ListHubSpokes: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
			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,
				})
			}),
		},
		ListSpokes: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
			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,
				})
			}),
		},
		GetSpoke: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
			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,
				})
			}),
		},
		CreateSpoke: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
		},
		UpdateSpoke: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
		},
		RejectHubSpoke: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
			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,
				})
			}),
		},
		AcceptHubSpoke: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
			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,
				})
			}),
		},
		DeleteSpoke: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
		},
		GetRouteTable: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
			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,
				})
			}),
		},
		GetRoute: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
			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,
				})
			}),
		},
		ListRoutes: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
			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,
				})
			}),
		},
		ListRouteTables: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
			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,
				})
			}),
		},
		GetGroup: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
			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,
				})
			}),
		},
		ListGroups: []gax.CallOption{
			gax.WithTimeout(60000 * time.Millisecond),
			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,
				})
			}),
		},
		GetLocation:        []gax.CallOption{},
		ListLocations:      []gax.CallOption{},
		GetIamPolicy:       []gax.CallOption{},
		SetIamPolicy:       []gax.CallOption{},
		TestIamPermissions: []gax.CallOption{},
		CancelOperation:    []gax.CallOption{},
		DeleteOperation:    []gax.CallOption{},
		GetOperation:       []gax.CallOption{},
		ListOperations:     []gax.CallOption{},
	}
}

// internalHubClient is an interface that defines the methods available from Network Connectivity API.
type internalHubClient interface {
	Close() error
	setGoogleClientInfo(...string)
	Connection() *grpc.ClientConn
	ListHubs(context.Context, *networkconnectivitypb.ListHubsRequest, ...gax.CallOption) *HubIterator
	GetHub(context.Context, *networkconnectivitypb.GetHubRequest, ...gax.CallOption) (*networkconnectivitypb.Hub, error)
	CreateHub(context.Context, *networkconnectivitypb.CreateHubRequest, ...gax.CallOption) (*CreateHubOperation, error)
	CreateHubOperation(name string) *CreateHubOperation
	UpdateHub(context.Context, *networkconnectivitypb.UpdateHubRequest, ...gax.CallOption) (*UpdateHubOperation, error)
	UpdateHubOperation(name string) *UpdateHubOperation
	DeleteHub(context.Context, *networkconnectivitypb.DeleteHubRequest, ...gax.CallOption) (*DeleteHubOperation, error)
	DeleteHubOperation(name string) *DeleteHubOperation
	ListHubSpokes(context.Context, *networkconnectivitypb.ListHubSpokesRequest, ...gax.CallOption) *SpokeIterator
	ListSpokes(context.Context, *networkconnectivitypb.ListSpokesRequest, ...gax.CallOption) *SpokeIterator
	GetSpoke(context.Context, *networkconnectivitypb.GetSpokeRequest, ...gax.CallOption) (*networkconnectivitypb.Spoke, error)
	CreateSpoke(context.Context, *networkconnectivitypb.CreateSpokeRequest, ...gax.CallOption) (*CreateSpokeOperation, error)
	CreateSpokeOperation(name string) *CreateSpokeOperation
	UpdateSpoke(context.Context, *networkconnectivitypb.UpdateSpokeRequest, ...gax.CallOption) (*UpdateSpokeOperation, error)
	UpdateSpokeOperation(name string) *UpdateSpokeOperation
	RejectHubSpoke(context.Context, *networkconnectivitypb.RejectHubSpokeRequest, ...gax.CallOption) (*RejectHubSpokeOperation, error)
	RejectHubSpokeOperation(name string) *RejectHubSpokeOperation
	AcceptHubSpoke(context.Context, *networkconnectivitypb.AcceptHubSpokeRequest, ...gax.CallOption) (*AcceptHubSpokeOperation, error)
	AcceptHubSpokeOperation(name string) *AcceptHubSpokeOperation
	DeleteSpoke(context.Context, *networkconnectivitypb.DeleteSpokeRequest, ...gax.CallOption) (*DeleteSpokeOperation, error)
	DeleteSpokeOperation(name string) *DeleteSpokeOperation
	GetRouteTable(context.Context, *networkconnectivitypb.GetRouteTableRequest, ...gax.CallOption) (*networkconnectivitypb.RouteTable, error)
	GetRoute(context.Context, *networkconnectivitypb.GetRouteRequest, ...gax.CallOption) (*networkconnectivitypb.Route, error)
	ListRoutes(context.Context, *networkconnectivitypb.ListRoutesRequest, ...gax.CallOption) *RouteIterator
	ListRouteTables(context.Context, *networkconnectivitypb.ListRouteTablesRequest, ...gax.CallOption) *RouteTableIterator
	GetGroup(context.Context, *networkconnectivitypb.GetGroupRequest, ...gax.CallOption) (*networkconnectivitypb.Group, error)
	ListGroups(context.Context, *networkconnectivitypb.ListGroupsRequest, ...gax.CallOption) *GroupIterator
	GetLocation(context.Context, *locationpb.GetLocationRequest, ...gax.CallOption) (*locationpb.Location, error)
	ListLocations(context.Context, *locationpb.ListLocationsRequest, ...gax.CallOption) *LocationIterator
	GetIamPolicy(context.Context, *iampb.GetIamPolicyRequest, ...gax.CallOption) (*iampb.Policy, error)
	SetIamPolicy(context.Context, *iampb.SetIamPolicyRequest, ...gax.CallOption) (*iampb.Policy, error)
	TestIamPermissions(context.Context, *iampb.TestIamPermissionsRequest, ...gax.CallOption) (*iampb.TestIamPermissionsResponse, error)
	CancelOperation(context.Context, *longrunningpb.CancelOperationRequest, ...gax.CallOption) error
	DeleteOperation(context.Context, *longrunningpb.DeleteOperationRequest, ...gax.CallOption) error
	GetOperation(context.Context, *longrunningpb.GetOperationRequest, ...gax.CallOption) (*longrunningpb.Operation, error)
	ListOperations(context.Context, *longrunningpb.ListOperationsRequest, ...gax.CallOption) *OperationIterator
}

// HubClient is a client for interacting with Network Connectivity API.
// Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
//
// Network Connectivity Center is a hub-and-spoke abstraction for network
// connectivity management in Google Cloud. It reduces operational complexity
// through a simple, centralized connectivity management model.
type HubClient struct {
	// The internal transport-dependent client.
	internalClient internalHubClient

	// The call options for this service.
	CallOptions *HubCallOptions

	// LROClient is used internally to handle long-running operations.
	// It is exposed so that its CallOptions can be modified if required.
	// Users should not Close this client.
	LROClient *lroauto.OperationsClient
}

// 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 *HubClient) 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 *HubClient) setGoogleClientInfo(keyval ...string) {
	c.internalClient.setGoogleClientInfo(keyval...)
}

// Connection returns a connection to the API service.
//
// Deprecated: Connections are now pooled so this method does not always
// return the same resource.
func (c *HubClient) Connection() *grpc.ClientConn {
	return c.internalClient.Connection()
}

// ListHubs lists the Network Connectivity Center hubs associated with a given project.
func (c *HubClient) ListHubs(ctx context.Context, req *networkconnectivitypb.ListHubsRequest, opts ...gax.CallOption) *HubIterator {
	return c.internalClient.ListHubs(ctx, req, opts...)
}

// GetHub gets details about a Network Connectivity Center hub.
func (c *HubClient) GetHub(ctx context.Context, req *networkconnectivitypb.GetHubRequest, opts ...gax.CallOption) (*networkconnectivitypb.Hub, error) {
	return c.internalClient.GetHub(ctx, req, opts...)
}

// CreateHub creates a new Network Connectivity Center hub in the specified project.
func (c *HubClient) CreateHub(ctx context.Context, req *networkconnectivitypb.CreateHubRequest, opts ...gax.CallOption) (*CreateHubOperation, error) {
	return c.internalClient.CreateHub(ctx, req, opts...)
}

// CreateHubOperation returns a new CreateHubOperation from a given name.
// The name must be that of a previously created CreateHubOperation, possibly from a different process.
func (c *HubClient) CreateHubOperation(name string) *CreateHubOperation {
	return c.internalClient.CreateHubOperation(name)
}

// UpdateHub updates the description and/or labels of a Network Connectivity Center
// hub.
func (c *HubClient) UpdateHub(ctx context.Context, req *networkconnectivitypb.UpdateHubRequest, opts ...gax.CallOption) (*UpdateHubOperation, error) {
	return c.internalClient.UpdateHub(ctx, req, opts...)
}

// UpdateHubOperation returns a new UpdateHubOperation from a given name.
// The name must be that of a previously created UpdateHubOperation, possibly from a different process.
func (c *HubClient) UpdateHubOperation(name string) *UpdateHubOperation {
	return c.internalClient.UpdateHubOperation(name)
}

// DeleteHub deletes a Network Connectivity Center hub.
func (c *HubClient) DeleteHub(ctx context.Context, req *networkconnectivitypb.DeleteHubRequest, opts ...gax.CallOption) (*DeleteHubOperation, error) {
	return c.internalClient.DeleteHub(ctx, req, opts...)
}

// DeleteHubOperation returns a new DeleteHubOperation from a given name.
// The name must be that of a previously created DeleteHubOperation, possibly from a different process.
func (c *HubClient) DeleteHubOperation(name string) *DeleteHubOperation {
	return c.internalClient.DeleteHubOperation(name)
}

// ListHubSpokes lists the Network Connectivity Center spokes associated with a
// specified hub and location. The list includes both spokes that are attached
// to the hub and spokes that have been proposed but not yet accepted.
func (c *HubClient) ListHubSpokes(ctx context.Context, req *networkconnectivitypb.ListHubSpokesRequest, opts ...gax.CallOption) *SpokeIterator {
	return c.internalClient.ListHubSpokes(ctx, req, opts...)
}

// ListSpokes lists the Network Connectivity Center spokes in a specified project and
// location.
func (c *HubClient) ListSpokes(ctx context.Context, req *networkconnectivitypb.ListSpokesRequest, opts ...gax.CallOption) *SpokeIterator {
	return c.internalClient.ListSpokes(ctx, req, opts...)
}

// GetSpoke gets details about a Network Connectivity Center spoke.
func (c *HubClient) GetSpoke(ctx context.Context, req *networkconnectivitypb.GetSpokeRequest, opts ...gax.CallOption) (*networkconnectivitypb.Spoke, error) {
	return c.internalClient.GetSpoke(ctx, req, opts...)
}

// CreateSpoke creates a Network Connectivity Center spoke.
func (c *HubClient) CreateSpoke(ctx context.Context, req *networkconnectivitypb.CreateSpokeRequest, opts ...gax.CallOption) (*CreateSpokeOperation, error) {
	return c.internalClient.CreateSpoke(ctx, req, opts...)
}

// CreateSpokeOperation returns a new CreateSpokeOperation from a given name.
// The name must be that of a previously created CreateSpokeOperation, possibly from a different process.
func (c *HubClient) CreateSpokeOperation(name string) *CreateSpokeOperation {
	return c.internalClient.CreateSpokeOperation(name)
}

// UpdateSpoke updates the parameters of a Network Connectivity Center spoke.
func (c *HubClient) UpdateSpoke(ctx context.Context, req *networkconnectivitypb.UpdateSpokeRequest, opts ...gax.CallOption) (*UpdateSpokeOperation, error) {
	return c.internalClient.UpdateSpoke(ctx, req, opts...)
}

// UpdateSpokeOperation returns a new UpdateSpokeOperation from a given name.
// The name must be that of a previously created UpdateSpokeOperation, possibly from a different process.
func (c *HubClient) UpdateSpokeOperation(name string) *UpdateSpokeOperation {
	return c.internalClient.UpdateSpokeOperation(name)
}

// RejectHubSpoke rejects a Network Connectivity Center spoke from being attached to a hub.
// If the spoke was previously in the ACTIVE state, it
// transitions to the INACTIVE state and is no longer able to
// connect to other spokes that are attached to the hub.
func (c *HubClient) RejectHubSpoke(ctx context.Context, req *networkconnectivitypb.RejectHubSpokeRequest, opts ...gax.CallOption) (*RejectHubSpokeOperation, error) {
	return c.internalClient.RejectHubSpoke(ctx, req, opts...)
}

// RejectHubSpokeOperation returns a new RejectHubSpokeOperation from a given name.
// The name must be that of a previously created RejectHubSpokeOperation, possibly from a different process.
func (c *HubClient) RejectHubSpokeOperation(name string) *RejectHubSpokeOperation {
	return c.internalClient.RejectHubSpokeOperation(name)
}

// AcceptHubSpoke accepts a proposal to attach a Network Connectivity Center spoke
// to a hub.
func (c *HubClient) AcceptHubSpoke(ctx context.Context, req *networkconnectivitypb.AcceptHubSpokeRequest, opts ...gax.CallOption) (*AcceptHubSpokeOperation, error) {
	return c.internalClient.AcceptHubSpoke(ctx, req, opts...)
}

// AcceptHubSpokeOperation returns a new AcceptHubSpokeOperation from a given name.
// The name must be that of a previously created AcceptHubSpokeOperation, possibly from a different process.
func (c *HubClient) AcceptHubSpokeOperation(name string) *AcceptHubSpokeOperation {
	return c.internalClient.AcceptHubSpokeOperation(name)
}

// DeleteSpoke deletes a Network Connectivity Center spoke.
func (c *HubClient) DeleteSpoke(ctx context.Context, req *networkconnectivitypb.DeleteSpokeRequest, opts ...gax.CallOption) (*DeleteSpokeOperation, error) {
	return c.internalClient.DeleteSpoke(ctx, req, opts...)
}

// DeleteSpokeOperation returns a new DeleteSpokeOperation from a given name.
// The name must be that of a previously created DeleteSpokeOperation, possibly from a different process.
func (c *HubClient) DeleteSpokeOperation(name string) *DeleteSpokeOperation {
	return c.internalClient.DeleteSpokeOperation(name)
}

// GetRouteTable gets details about a Network Connectivity Center route table.
func (c *HubClient) GetRouteTable(ctx context.Context, req *networkconnectivitypb.GetRouteTableRequest, opts ...gax.CallOption) (*networkconnectivitypb.RouteTable, error) {
	return c.internalClient.GetRouteTable(ctx, req, opts...)
}

// GetRoute gets details about the specified route.
func (c *HubClient) GetRoute(ctx context.Context, req *networkconnectivitypb.GetRouteRequest, opts ...gax.CallOption) (*networkconnectivitypb.Route, error) {
	return c.internalClient.GetRoute(ctx, req, opts...)
}

// ListRoutes lists routes in a given project.
func (c *HubClient) ListRoutes(ctx context.Context, req *networkconnectivitypb.ListRoutesRequest, opts ...gax.CallOption) *RouteIterator {
	return c.internalClient.ListRoutes(ctx, req, opts...)
}

// ListRouteTables lists route tables in a given project.
func (c *HubClient) ListRouteTables(ctx context.Context, req *networkconnectivitypb.ListRouteTablesRequest, opts ...gax.CallOption) *RouteTableIterator {
	return c.internalClient.ListRouteTables(ctx, req, opts...)
}

// GetGroup gets details about a Network Connectivity Center group.
func (c *HubClient) GetGroup(ctx context.Context, req *networkconnectivitypb.GetGroupRequest, opts ...gax.CallOption) (*networkconnectivitypb.Group, error) {
	return c.internalClient.GetGroup(ctx, req, opts...)
}

// ListGroups lists groups in a given hub.
func (c *HubClient) ListGroups(ctx context.Context, req *networkconnectivitypb.ListGroupsRequest, opts ...gax.CallOption) *GroupIterator {
	return c.internalClient.ListGroups(ctx, req, opts...)
}

// GetLocation gets information about a location.
func (c *HubClient) GetLocation(ctx context.Context, req *locationpb.GetLocationRequest, opts ...gax.CallOption) (*locationpb.Location, error) {
	return c.internalClient.GetLocation(ctx, req, opts...)
}

// ListLocations lists information about the supported locations for this service.
func (c *HubClient) ListLocations(ctx context.Context, req *locationpb.ListLocationsRequest, opts ...gax.CallOption) *LocationIterator {
	return c.internalClient.ListLocations(ctx, req, opts...)
}

// GetIamPolicy gets the access control policy for a resource. Returns an empty policy
// if the resource exists and does not have a policy set.
func (c *HubClient) GetIamPolicy(ctx context.Context, req *iampb.GetIamPolicyRequest, opts ...gax.CallOption) (*iampb.Policy, error) {
	return c.internalClient.GetIamPolicy(ctx, req, opts...)
}

// SetIamPolicy sets the access control policy on the specified resource. Replaces
// any existing policy.
//
// Can return NOT_FOUND, INVALID_ARGUMENT, and PERMISSION_DENIED
// errors.
func (c *HubClient) SetIamPolicy(ctx context.Context, req *iampb.SetIamPolicyRequest, opts ...gax.CallOption) (*iampb.Policy, error) {
	return c.internalClient.SetIamPolicy(ctx, req, opts...)
}

// TestIamPermissions returns permissions that a caller has on the specified resource. If the
// resource does not exist, this will return an empty set of
// permissions, not a NOT_FOUND error.
//
// Note: This operation is designed to be used for building
// permission-aware UIs and command-line tools, not for authorization
// checking. This operation may “fail open” without warning.
func (c *HubClient) TestIamPermissions(ctx context.Context, req *iampb.TestIamPermissionsRequest, opts ...gax.CallOption) (*iampb.TestIamPermissionsResponse, error) {
	return c.internalClient.TestIamPermissions(ctx, req, opts...)
}

// CancelOperation is a utility method from google.longrunning.Operations.
func (c *HubClient) CancelOperation(ctx context.Context, req *longrunningpb.CancelOperationRequest, opts ...gax.CallOption) error {
	return c.internalClient.CancelOperation(ctx, req, opts...)
}

// DeleteOperation is a utility method from google.longrunning.Operations.
func (c *HubClient) DeleteOperation(ctx context.Context, req *longrunningpb.DeleteOperationRequest, opts ...gax.CallOption) error {
	return c.internalClient.DeleteOperation(ctx, req, opts...)
}

// GetOperation is a utility method from google.longrunning.Operations.
func (c *HubClient) GetOperation(ctx context.Context, req *longrunningpb.GetOperationRequest, opts ...gax.CallOption) (*longrunningpb.Operation, error) {
	return c.internalClient.GetOperation(ctx, req, opts...)
}

// ListOperations is a utility method from google.longrunning.Operations.
func (c *HubClient) ListOperations(ctx context.Context, req *longrunningpb.ListOperationsRequest, opts ...gax.CallOption) *OperationIterator {
	return c.internalClient.ListOperations(ctx, req, opts...)
}

// hubGRPCClient is a client for interacting with Network Connectivity API over gRPC transport.
//
// Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
type hubGRPCClient struct {
	// Connection pool of gRPC connections to the service.
	connPool gtransport.ConnPool

	// Points back to the CallOptions field of the containing HubClient
	CallOptions **HubCallOptions

	// The gRPC API client.
	hubClient networkconnectivitypb.HubServiceClient

	// LROClient is used internally to handle long-running operations.
	// It is exposed so that its CallOptions can be modified if required.
	// Users should not Close this client.
	LROClient **lroauto.OperationsClient

	operationsClient longrunningpb.OperationsClient

	iamPolicyClient iampb.IAMPolicyClient

	locationsClient locationpb.LocationsClient

	// The x-goog-* metadata to be sent with each request.
	xGoogHeaders []string
}

// NewHubClient creates a new hub service client based on gRPC.
// The returned client must be Closed when it is done being used to clean up its underlying connections.
//
// Network Connectivity Center is a hub-and-spoke abstraction for network
// connectivity management in Google Cloud. It reduces operational complexity
// through a simple, centralized connectivity management model.
func NewHubClient(ctx context.Context, opts ...option.ClientOption) (*HubClient, error) {
	clientOpts := defaultHubGRPCClientOptions()
	if newHubClientHook != nil {
		hookOpts, err := newHubClientHook(ctx, clientHookParams{})
		if err != nil {
			return nil, err
		}
		clientOpts = append(clientOpts, hookOpts...)
	}

	connPool, err := gtransport.DialPool(ctx, append(clientOpts, opts...)...)
	if err != nil {
		return nil, err
	}
	client := HubClient{CallOptions: defaultHubCallOptions()}

	c := &hubGRPCClient{
		connPool:         connPool,
		hubClient:        networkconnectivitypb.NewHubServiceClient(connPool),
		CallOptions:      &client.CallOptions,
		operationsClient: longrunningpb.NewOperationsClient(connPool),
		iamPolicyClient:  iampb.NewIAMPolicyClient(connPool),
		locationsClient:  locationpb.NewLocationsClient(connPool),
	}
	c.setGoogleClientInfo()

	client.internalClient = c

	client.LROClient, err = lroauto.NewOperationsClient(ctx, gtransport.WithConnPool(connPool))
	if err != nil {
		// This error "should not happen", since we are just reusing old connection pool
		// and never actually need to dial.
		// If this does happen, we could leak connp. However, we cannot close conn:
		// If the user invoked the constructor with option.WithGRPCConn,
		// we would close a connection that's still in use.
		// TODO: investigate error conditions.
		return nil, err
	}
	c.LROClient = &client.LROClient
	return &client, nil
}

// Connection returns a connection to the API service.
//
// Deprecated: Connections are now pooled so this method does not always
// return the same resource.
func (c *hubGRPCClient) 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 *hubGRPCClient) setGoogleClientInfo(keyval ...string) {
	kv := append([]string{"gl-go", gax.GoVersion}, keyval...)
	kv = append(kv, "gapic", getVersionClient(), "gax", gax.Version, "grpc", grpc.Version)
	c.xGoogHeaders = []string{"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 *hubGRPCClient) Close() error {
	return c.connPool.Close()
}

func (c *hubGRPCClient) ListHubs(ctx context.Context, req *networkconnectivitypb.ListHubsRequest, opts ...gax.CallOption) *HubIterator {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).ListHubs[0:len((*c.CallOptions).ListHubs):len((*c.CallOptions).ListHubs)], opts...)
	it := &HubIterator{}
	req = proto.Clone(req).(*networkconnectivitypb.ListHubsRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*networkconnectivitypb.Hub, string, error) {
		resp := &networkconnectivitypb.ListHubsResponse{}
		if pageToken != "" {
			req.PageToken = pageToken
		}
		if pageSize > math.MaxInt32 {
			req.PageSize = math.MaxInt32
		} else if pageSize != 0 {
			req.PageSize = int32(pageSize)
		}
		err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
			var err error
			resp, err = c.hubClient.ListHubs(ctx, req, settings.GRPC...)
			return err
		}, opts...)
		if err != nil {
			return nil, "", err
		}

		it.Response = resp
		return resp.GetHubs(), 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 *hubGRPCClient) GetHub(ctx context.Context, req *networkconnectivitypb.GetHubRequest, opts ...gax.CallOption) (*networkconnectivitypb.Hub, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).GetHub[0:len((*c.CallOptions).GetHub):len((*c.CallOptions).GetHub)], opts...)
	var resp *networkconnectivitypb.Hub
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.hubClient.GetHub(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *hubGRPCClient) CreateHub(ctx context.Context, req *networkconnectivitypb.CreateHubRequest, opts ...gax.CallOption) (*CreateHubOperation, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).CreateHub[0:len((*c.CallOptions).CreateHub):len((*c.CallOptions).CreateHub)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.hubClient.CreateHub(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &CreateHubOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

func (c *hubGRPCClient) UpdateHub(ctx context.Context, req *networkconnectivitypb.UpdateHubRequest, opts ...gax.CallOption) (*UpdateHubOperation, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "hub.name", url.QueryEscape(req.GetHub().GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).UpdateHub[0:len((*c.CallOptions).UpdateHub):len((*c.CallOptions).UpdateHub)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.hubClient.UpdateHub(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &UpdateHubOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

func (c *hubGRPCClient) DeleteHub(ctx context.Context, req *networkconnectivitypb.DeleteHubRequest, opts ...gax.CallOption) (*DeleteHubOperation, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).DeleteHub[0:len((*c.CallOptions).DeleteHub):len((*c.CallOptions).DeleteHub)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.hubClient.DeleteHub(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &DeleteHubOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

func (c *hubGRPCClient) ListHubSpokes(ctx context.Context, req *networkconnectivitypb.ListHubSpokesRequest, opts ...gax.CallOption) *SpokeIterator {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).ListHubSpokes[0:len((*c.CallOptions).ListHubSpokes):len((*c.CallOptions).ListHubSpokes)], opts...)
	it := &SpokeIterator{}
	req = proto.Clone(req).(*networkconnectivitypb.ListHubSpokesRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*networkconnectivitypb.Spoke, string, error) {
		resp := &networkconnectivitypb.ListHubSpokesResponse{}
		if pageToken != "" {
			req.PageToken = pageToken
		}
		if pageSize > math.MaxInt32 {
			req.PageSize = math.MaxInt32
		} else if pageSize != 0 {
			req.PageSize = int32(pageSize)
		}
		err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
			var err error
			resp, err = c.hubClient.ListHubSpokes(ctx, req, settings.GRPC...)
			return err
		}, opts...)
		if err != nil {
			return nil, "", err
		}

		it.Response = resp
		return resp.GetSpokes(), 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 *hubGRPCClient) ListSpokes(ctx context.Context, req *networkconnectivitypb.ListSpokesRequest, opts ...gax.CallOption) *SpokeIterator {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).ListSpokes[0:len((*c.CallOptions).ListSpokes):len((*c.CallOptions).ListSpokes)], opts...)
	it := &SpokeIterator{}
	req = proto.Clone(req).(*networkconnectivitypb.ListSpokesRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*networkconnectivitypb.Spoke, string, error) {
		resp := &networkconnectivitypb.ListSpokesResponse{}
		if pageToken != "" {
			req.PageToken = pageToken
		}
		if pageSize > math.MaxInt32 {
			req.PageSize = math.MaxInt32
		} else if pageSize != 0 {
			req.PageSize = int32(pageSize)
		}
		err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
			var err error
			resp, err = c.hubClient.ListSpokes(ctx, req, settings.GRPC...)
			return err
		}, opts...)
		if err != nil {
			return nil, "", err
		}

		it.Response = resp
		return resp.GetSpokes(), 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 *hubGRPCClient) GetSpoke(ctx context.Context, req *networkconnectivitypb.GetSpokeRequest, opts ...gax.CallOption) (*networkconnectivitypb.Spoke, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).GetSpoke[0:len((*c.CallOptions).GetSpoke):len((*c.CallOptions).GetSpoke)], opts...)
	var resp *networkconnectivitypb.Spoke
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.hubClient.GetSpoke(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *hubGRPCClient) CreateSpoke(ctx context.Context, req *networkconnectivitypb.CreateSpokeRequest, opts ...gax.CallOption) (*CreateSpokeOperation, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).CreateSpoke[0:len((*c.CallOptions).CreateSpoke):len((*c.CallOptions).CreateSpoke)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.hubClient.CreateSpoke(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &CreateSpokeOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

func (c *hubGRPCClient) UpdateSpoke(ctx context.Context, req *networkconnectivitypb.UpdateSpokeRequest, opts ...gax.CallOption) (*UpdateSpokeOperation, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "spoke.name", url.QueryEscape(req.GetSpoke().GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).UpdateSpoke[0:len((*c.CallOptions).UpdateSpoke):len((*c.CallOptions).UpdateSpoke)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.hubClient.UpdateSpoke(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &UpdateSpokeOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

func (c *hubGRPCClient) RejectHubSpoke(ctx context.Context, req *networkconnectivitypb.RejectHubSpokeRequest, opts ...gax.CallOption) (*RejectHubSpokeOperation, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).RejectHubSpoke[0:len((*c.CallOptions).RejectHubSpoke):len((*c.CallOptions).RejectHubSpoke)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.hubClient.RejectHubSpoke(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &RejectHubSpokeOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

func (c *hubGRPCClient) AcceptHubSpoke(ctx context.Context, req *networkconnectivitypb.AcceptHubSpokeRequest, opts ...gax.CallOption) (*AcceptHubSpokeOperation, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).AcceptHubSpoke[0:len((*c.CallOptions).AcceptHubSpoke):len((*c.CallOptions).AcceptHubSpoke)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.hubClient.AcceptHubSpoke(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &AcceptHubSpokeOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

func (c *hubGRPCClient) DeleteSpoke(ctx context.Context, req *networkconnectivitypb.DeleteSpokeRequest, opts ...gax.CallOption) (*DeleteSpokeOperation, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).DeleteSpoke[0:len((*c.CallOptions).DeleteSpoke):len((*c.CallOptions).DeleteSpoke)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.hubClient.DeleteSpoke(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return &DeleteSpokeOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, resp),
	}, nil
}

func (c *hubGRPCClient) GetRouteTable(ctx context.Context, req *networkconnectivitypb.GetRouteTableRequest, opts ...gax.CallOption) (*networkconnectivitypb.RouteTable, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).GetRouteTable[0:len((*c.CallOptions).GetRouteTable):len((*c.CallOptions).GetRouteTable)], opts...)
	var resp *networkconnectivitypb.RouteTable
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.hubClient.GetRouteTable(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *hubGRPCClient) GetRoute(ctx context.Context, req *networkconnectivitypb.GetRouteRequest, opts ...gax.CallOption) (*networkconnectivitypb.Route, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).GetRoute[0:len((*c.CallOptions).GetRoute):len((*c.CallOptions).GetRoute)], opts...)
	var resp *networkconnectivitypb.Route
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.hubClient.GetRoute(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *hubGRPCClient) ListRoutes(ctx context.Context, req *networkconnectivitypb.ListRoutesRequest, opts ...gax.CallOption) *RouteIterator {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).ListRoutes[0:len((*c.CallOptions).ListRoutes):len((*c.CallOptions).ListRoutes)], opts...)
	it := &RouteIterator{}
	req = proto.Clone(req).(*networkconnectivitypb.ListRoutesRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*networkconnectivitypb.Route, string, error) {
		resp := &networkconnectivitypb.ListRoutesResponse{}
		if pageToken != "" {
			req.PageToken = pageToken
		}
		if pageSize > math.MaxInt32 {
			req.PageSize = math.MaxInt32
		} else if pageSize != 0 {
			req.PageSize = int32(pageSize)
		}
		err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
			var err error
			resp, err = c.hubClient.ListRoutes(ctx, req, settings.GRPC...)
			return err
		}, opts...)
		if err != nil {
			return nil, "", err
		}

		it.Response = resp
		return resp.GetRoutes(), 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 *hubGRPCClient) ListRouteTables(ctx context.Context, req *networkconnectivitypb.ListRouteTablesRequest, opts ...gax.CallOption) *RouteTableIterator {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).ListRouteTables[0:len((*c.CallOptions).ListRouteTables):len((*c.CallOptions).ListRouteTables)], opts...)
	it := &RouteTableIterator{}
	req = proto.Clone(req).(*networkconnectivitypb.ListRouteTablesRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*networkconnectivitypb.RouteTable, string, error) {
		resp := &networkconnectivitypb.ListRouteTablesResponse{}
		if pageToken != "" {
			req.PageToken = pageToken
		}
		if pageSize > math.MaxInt32 {
			req.PageSize = math.MaxInt32
		} else if pageSize != 0 {
			req.PageSize = int32(pageSize)
		}
		err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
			var err error
			resp, err = c.hubClient.ListRouteTables(ctx, req, settings.GRPC...)
			return err
		}, opts...)
		if err != nil {
			return nil, "", err
		}

		it.Response = resp
		return resp.GetRouteTables(), 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 *hubGRPCClient) GetGroup(ctx context.Context, req *networkconnectivitypb.GetGroupRequest, opts ...gax.CallOption) (*networkconnectivitypb.Group, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).GetGroup[0:len((*c.CallOptions).GetGroup):len((*c.CallOptions).GetGroup)], opts...)
	var resp *networkconnectivitypb.Group
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.hubClient.GetGroup(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *hubGRPCClient) ListGroups(ctx context.Context, req *networkconnectivitypb.ListGroupsRequest, opts ...gax.CallOption) *GroupIterator {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).ListGroups[0:len((*c.CallOptions).ListGroups):len((*c.CallOptions).ListGroups)], opts...)
	it := &GroupIterator{}
	req = proto.Clone(req).(*networkconnectivitypb.ListGroupsRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*networkconnectivitypb.Group, string, error) {
		resp := &networkconnectivitypb.ListGroupsResponse{}
		if pageToken != "" {
			req.PageToken = pageToken
		}
		if pageSize > math.MaxInt32 {
			req.PageSize = math.MaxInt32
		} else if pageSize != 0 {
			req.PageSize = int32(pageSize)
		}
		err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
			var err error
			resp, err = c.hubClient.ListGroups(ctx, req, settings.GRPC...)
			return err
		}, opts...)
		if err != nil {
			return nil, "", err
		}

		it.Response = resp
		return resp.GetGroups(), 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 *hubGRPCClient) GetLocation(ctx context.Context, req *locationpb.GetLocationRequest, opts ...gax.CallOption) (*locationpb.Location, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).GetLocation[0:len((*c.CallOptions).GetLocation):len((*c.CallOptions).GetLocation)], opts...)
	var resp *locationpb.Location
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.locationsClient.GetLocation(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *hubGRPCClient) ListLocations(ctx context.Context, req *locationpb.ListLocationsRequest, opts ...gax.CallOption) *LocationIterator {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).ListLocations[0:len((*c.CallOptions).ListLocations):len((*c.CallOptions).ListLocations)], opts...)
	it := &LocationIterator{}
	req = proto.Clone(req).(*locationpb.ListLocationsRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*locationpb.Location, string, error) {
		resp := &locationpb.ListLocationsResponse{}
		if pageToken != "" {
			req.PageToken = pageToken
		}
		if pageSize > math.MaxInt32 {
			req.PageSize = math.MaxInt32
		} else if pageSize != 0 {
			req.PageSize = int32(pageSize)
		}
		err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
			var err error
			resp, err = c.locationsClient.ListLocations(ctx, req, settings.GRPC...)
			return err
		}, opts...)
		if err != nil {
			return nil, "", err
		}

		it.Response = resp
		return resp.GetLocations(), 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 *hubGRPCClient) GetIamPolicy(ctx context.Context, req *iampb.GetIamPolicyRequest, opts ...gax.CallOption) (*iampb.Policy, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "resource", url.QueryEscape(req.GetResource()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).GetIamPolicy[0:len((*c.CallOptions).GetIamPolicy):len((*c.CallOptions).GetIamPolicy)], opts...)
	var resp *iampb.Policy
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.iamPolicyClient.GetIamPolicy(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *hubGRPCClient) SetIamPolicy(ctx context.Context, req *iampb.SetIamPolicyRequest, opts ...gax.CallOption) (*iampb.Policy, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "resource", url.QueryEscape(req.GetResource()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).SetIamPolicy[0:len((*c.CallOptions).SetIamPolicy):len((*c.CallOptions).SetIamPolicy)], opts...)
	var resp *iampb.Policy
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.iamPolicyClient.SetIamPolicy(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *hubGRPCClient) TestIamPermissions(ctx context.Context, req *iampb.TestIamPermissionsRequest, opts ...gax.CallOption) (*iampb.TestIamPermissionsResponse, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "resource", url.QueryEscape(req.GetResource()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).TestIamPermissions[0:len((*c.CallOptions).TestIamPermissions):len((*c.CallOptions).TestIamPermissions)], opts...)
	var resp *iampb.TestIamPermissionsResponse
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.iamPolicyClient.TestIamPermissions(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *hubGRPCClient) CancelOperation(ctx context.Context, req *longrunningpb.CancelOperationRequest, opts ...gax.CallOption) error {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).CancelOperation[0:len((*c.CallOptions).CancelOperation):len((*c.CallOptions).CancelOperation)], opts...)
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		_, err = c.operationsClient.CancelOperation(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	return err
}

func (c *hubGRPCClient) DeleteOperation(ctx context.Context, req *longrunningpb.DeleteOperationRequest, opts ...gax.CallOption) error {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).DeleteOperation[0:len((*c.CallOptions).DeleteOperation):len((*c.CallOptions).DeleteOperation)], opts...)
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		_, err = c.operationsClient.DeleteOperation(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	return err
}

func (c *hubGRPCClient) GetOperation(ctx context.Context, req *longrunningpb.GetOperationRequest, opts ...gax.CallOption) (*longrunningpb.Operation, error) {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).GetOperation[0:len((*c.CallOptions).GetOperation):len((*c.CallOptions).GetOperation)], opts...)
	var resp *longrunningpb.Operation
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
		var err error
		resp, err = c.operationsClient.GetOperation(ctx, req, settings.GRPC...)
		return err
	}, opts...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (c *hubGRPCClient) ListOperations(ctx context.Context, req *longrunningpb.ListOperationsRequest, opts ...gax.CallOption) *OperationIterator {
	hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))}

	hds = append(c.xGoogHeaders, hds...)
	ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
	opts = append((*c.CallOptions).ListOperations[0:len((*c.CallOptions).ListOperations):len((*c.CallOptions).ListOperations)], opts...)
	it := &OperationIterator{}
	req = proto.Clone(req).(*longrunningpb.ListOperationsRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*longrunningpb.Operation, string, error) {
		resp := &longrunningpb.ListOperationsResponse{}
		if pageToken != "" {
			req.PageToken = pageToken
		}
		if pageSize > math.MaxInt32 {
			req.PageSize = math.MaxInt32
		} else if pageSize != 0 {
			req.PageSize = int32(pageSize)
		}
		err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
			var err error
			resp, err = c.operationsClient.ListOperations(ctx, req, settings.GRPC...)
			return err
		}, opts...)
		if err != nil {
			return nil, "", err
		}

		it.Response = resp
		return resp.GetOperations(), 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
}

// AcceptHubSpokeOperation returns a new AcceptHubSpokeOperation from a given name.
// The name must be that of a previously created AcceptHubSpokeOperation, possibly from a different process.
func (c *hubGRPCClient) AcceptHubSpokeOperation(name string) *AcceptHubSpokeOperation {
	return &AcceptHubSpokeOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, &longrunningpb.Operation{Name: name}),
	}
}

// CreateHubOperation returns a new CreateHubOperation from a given name.
// The name must be that of a previously created CreateHubOperation, possibly from a different process.
func (c *hubGRPCClient) CreateHubOperation(name string) *CreateHubOperation {
	return &CreateHubOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, &longrunningpb.Operation{Name: name}),
	}
}

// CreateSpokeOperation returns a new CreateSpokeOperation from a given name.
// The name must be that of a previously created CreateSpokeOperation, possibly from a different process.
func (c *hubGRPCClient) CreateSpokeOperation(name string) *CreateSpokeOperation {
	return &CreateSpokeOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, &longrunningpb.Operation{Name: name}),
	}
}

// DeleteHubOperation returns a new DeleteHubOperation from a given name.
// The name must be that of a previously created DeleteHubOperation, possibly from a different process.
func (c *hubGRPCClient) DeleteHubOperation(name string) *DeleteHubOperation {
	return &DeleteHubOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, &longrunningpb.Operation{Name: name}),
	}
}

// DeleteSpokeOperation returns a new DeleteSpokeOperation from a given name.
// The name must be that of a previously created DeleteSpokeOperation, possibly from a different process.
func (c *hubGRPCClient) DeleteSpokeOperation(name string) *DeleteSpokeOperation {
	return &DeleteSpokeOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, &longrunningpb.Operation{Name: name}),
	}
}

// RejectHubSpokeOperation returns a new RejectHubSpokeOperation from a given name.
// The name must be that of a previously created RejectHubSpokeOperation, possibly from a different process.
func (c *hubGRPCClient) RejectHubSpokeOperation(name string) *RejectHubSpokeOperation {
	return &RejectHubSpokeOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, &longrunningpb.Operation{Name: name}),
	}
}

// UpdateHubOperation returns a new UpdateHubOperation from a given name.
// The name must be that of a previously created UpdateHubOperation, possibly from a different process.
func (c *hubGRPCClient) UpdateHubOperation(name string) *UpdateHubOperation {
	return &UpdateHubOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, &longrunningpb.Operation{Name: name}),
	}
}

// UpdateSpokeOperation returns a new UpdateSpokeOperation from a given name.
// The name must be that of a previously created UpdateSpokeOperation, possibly from a different process.
func (c *hubGRPCClient) UpdateSpokeOperation(name string) *UpdateSpokeOperation {
	return &UpdateSpokeOperation{
		lro: longrunning.InternalNewOperation(*c.LROClient, &longrunningpb.Operation{Name: name}),
	}
}