feat(gkehub): start generating apiv1beta1 (#3698)

diff --git a/gkehub/apiv1beta1/doc.go b/gkehub/apiv1beta1/doc.go
new file mode 100644
index 0000000..497cd30
--- /dev/null
+++ b/gkehub/apiv1beta1/doc.go
@@ -0,0 +1,114 @@
+// 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 gkehub is an auto-generated package for the
+// GKE Hub.
+//
+// Use of Context
+//
+// The ctx passed to NewClient is used for authentication requests and
+// for creating the underlying connection, but is not used for subsequent calls.
+// Individual methods on the client use the ctx given to them.
+//
+// To close the open connection, use the Close() method.
+//
+// For information about setting deadlines, reusing contexts, and more
+// please visit pkg.go.dev/cloud.google.com/go.
+package gkehub // import "cloud.google.com/go/gkehub/apiv1beta1"
+
+import (
+	"context"
+	"os"
+	"runtime"
+	"strconv"
+	"strings"
+	"unicode"
+
+	"google.golang.org/api/option"
+	"google.golang.org/grpc/metadata"
+)
+
+// For more information on implementing a client constructor hook, see
+// https://github.com/googleapis/google-cloud-go/wiki/Customizing-constructors.
+type clientHookParams struct{}
+type clientHook func(context.Context, clientHookParams) ([]option.ClientOption, error)
+
+const versionClient = "20210211"
+
+func insertMetadata(ctx context.Context, mds ...metadata.MD) context.Context {
+	out, _ := metadata.FromOutgoingContext(ctx)
+	out = out.Copy()
+	for _, md := range mds {
+		for k, v := range md {
+			out[k] = append(out[k], v...)
+		}
+	}
+	return metadata.NewOutgoingContext(ctx, out)
+}
+
+func checkDisableDeadlines() (bool, error) {
+	raw, ok := os.LookupEnv("GOOGLE_API_GO_EXPERIMENTAL_DISABLE_DEFAULT_DEADLINE")
+	if !ok {
+		return false, nil
+	}
+
+	b, err := strconv.ParseBool(raw)
+	return b, err
+}
+
+// DefaultAuthScopes reports the default set of authentication scopes to use with this package.
+func DefaultAuthScopes() []string {
+	return []string{
+		"https://www.googleapis.com/auth/cloud-platform",
+	}
+}
+
+// versionGo returns the Go runtime version. The returned string
+// has no whitespace, suitable for reporting in header.
+func versionGo() string {
+	const develPrefix = "devel +"
+
+	s := runtime.Version()
+	if strings.HasPrefix(s, develPrefix) {
+		s = s[len(develPrefix):]
+		if p := strings.IndexFunc(s, unicode.IsSpace); p >= 0 {
+			s = s[:p]
+		}
+		return s
+	}
+
+	notSemverRune := func(r rune) bool {
+		return !strings.ContainsRune("0123456789.", r)
+	}
+
+	if strings.HasPrefix(s, "go1") {
+		s = s[2:]
+		var prerelease string
+		if p := strings.IndexFunc(s, notSemverRune); p >= 0 {
+			s, prerelease = s[:p], s[p:]
+		}
+		if strings.HasSuffix(s, ".") {
+			s += "0"
+		} else if strings.Count(s, ".") < 2 {
+			s += ".0"
+		}
+		if prerelease != "" {
+			s += "-" + prerelease
+		}
+		return s
+	}
+	return "UNKNOWN"
+}
diff --git a/gkehub/apiv1beta1/gke_hub_membership_client.go b/gkehub/apiv1beta1/gke_hub_membership_client.go
new file mode 100644
index 0000000..80cc561
--- /dev/null
+++ b/gkehub/apiv1beta1/gke_hub_membership_client.go
@@ -0,0 +1,707 @@
+// 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 gkehub
+
+import (
+	"context"
+	"fmt"
+	"math"
+	"net/url"
+	"time"
+
+	"cloud.google.com/go/longrunning"
+	lroauto "cloud.google.com/go/longrunning/autogen"
+	"github.com/golang/protobuf/proto"
+	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"
+	gkehubpb "google.golang.org/genproto/googleapis/cloud/gkehub/v1beta1"
+	longrunningpb "google.golang.org/genproto/googleapis/longrunning"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/metadata"
+)
+
+var newGkeHubMembershipClientHook clientHook
+
+// GkeHubMembershipCallOptions contains the retry settings for each method of GkeHubMembershipClient.
+type GkeHubMembershipCallOptions struct {
+	ListMemberships             []gax.CallOption
+	GetMembership               []gax.CallOption
+	CreateMembership            []gax.CallOption
+	DeleteMembership            []gax.CallOption
+	UpdateMembership            []gax.CallOption
+	GenerateConnectManifest     []gax.CallOption
+	ValidateExclusivity         []gax.CallOption
+	GenerateExclusivityManifest []gax.CallOption
+}
+
+func defaultGkeHubMembershipClientOptions() []option.ClientOption {
+	return []option.ClientOption{
+		internaloption.WithDefaultEndpoint("gkehub.googleapis.com:443"),
+		internaloption.WithDefaultMTLSEndpoint("gkehub.mtls.googleapis.com:443"),
+		internaloption.WithDefaultAudience("https://gkehub.googleapis.com/"),
+		internaloption.WithDefaultScopes(DefaultAuthScopes()...),
+		option.WithGRPCDialOption(grpc.WithDisableServiceConfig()),
+		option.WithGRPCDialOption(grpc.WithDefaultCallOptions(
+			grpc.MaxCallRecvMsgSize(math.MaxInt32))),
+	}
+}
+
+func defaultGkeHubMembershipCallOptions() *GkeHubMembershipCallOptions {
+	return &GkeHubMembershipCallOptions{
+		ListMemberships: []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,
+				})
+			}),
+		},
+		GetMembership: []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,
+				})
+			}),
+		},
+		CreateMembership: []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,
+				})
+			}),
+		},
+		DeleteMembership: []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,
+				})
+			}),
+		},
+		UpdateMembership: []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,
+				})
+			}),
+		},
+		GenerateConnectManifest: []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,
+				})
+			}),
+		},
+		ValidateExclusivity: []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,
+				})
+			}),
+		},
+		GenerateExclusivityManifest: []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,
+				})
+			}),
+		},
+	}
+}
+
+// GkeHubMembershipClient is a client for interacting with GKE Hub.
+//
+// Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
+type GkeHubMembershipClient struct {
+	// Connection pool of gRPC connections to the service.
+	connPool gtransport.ConnPool
+
+	// flag to opt out of default deadlines via GOOGLE_API_GO_EXPERIMENTAL_DISABLE_DEFAULT_DEADLINE
+	disableDeadlines bool
+
+	// The gRPC API client.
+	gkeHubMembershipClient gkehubpb.GkeHubMembershipServiceClient
+
+	// LROClient is used internally to handle longrunning operations.
+	// It is exposed so that its CallOptions can be modified if required.
+	// Users should not Close this client.
+	LROClient *lroauto.OperationsClient
+
+	// The call options for this service.
+	CallOptions *GkeHubMembershipCallOptions
+
+	// The x-goog-* metadata to be sent with each request.
+	xGoogMetadata metadata.MD
+}
+
+// NewGkeHubMembershipClient creates a new gke hub membership service client.
+//
+// GKE Hub CRUD API for the Membership resource.
+// The Membership service is currently only available in the global location.
+func NewGkeHubMembershipClient(ctx context.Context, opts ...option.ClientOption) (*GkeHubMembershipClient, error) {
+	clientOpts := defaultGkeHubMembershipClientOptions()
+
+	if newGkeHubMembershipClientHook != nil {
+		hookOpts, err := newGkeHubMembershipClientHook(ctx, clientHookParams{})
+		if err != nil {
+			return nil, err
+		}
+		clientOpts = append(clientOpts, hookOpts...)
+	}
+
+	disableDeadlines, err := checkDisableDeadlines()
+	if err != nil {
+		return nil, err
+	}
+
+	connPool, err := gtransport.DialPool(ctx, append(clientOpts, opts...)...)
+	if err != nil {
+		return nil, err
+	}
+	c := &GkeHubMembershipClient{
+		connPool:         connPool,
+		disableDeadlines: disableDeadlines,
+		CallOptions:      defaultGkeHubMembershipCallOptions(),
+
+		gkeHubMembershipClient: gkehubpb.NewGkeHubMembershipServiceClient(connPool),
+	}
+	c.setGoogleClientInfo()
+
+	c.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
+	}
+	return c, nil
+}
+
+// Connection returns a connection to the API service.
+//
+// Deprecated.
+func (c *GkeHubMembershipClient) Connection() *grpc.ClientConn {
+	return c.connPool.Conn()
+}
+
+// Close closes the connection to the API service. The user should invoke this when
+// the client is no longer required.
+func (c *GkeHubMembershipClient) Close() error {
+	return c.connPool.Close()
+}
+
+// setGoogleClientInfo sets the name and version of the application in
+// the `x-goog-api-client` header passed on each request. Intended for
+// use by Google-written clients.
+func (c *GkeHubMembershipClient) 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...))
+}
+
+// ListMemberships lists Memberships in a given project and location.
+func (c *GkeHubMembershipClient) ListMemberships(ctx context.Context, req *gkehubpb.ListMembershipsRequest, opts ...gax.CallOption) *MembershipIterator {
+	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.ListMemberships[0:len(c.CallOptions.ListMemberships):len(c.CallOptions.ListMemberships)], opts...)
+	it := &MembershipIterator{}
+	req = proto.Clone(req).(*gkehubpb.ListMembershipsRequest)
+	it.InternalFetch = func(pageSize int, pageToken string) ([]*gkehubpb.Membership, string, error) {
+		var resp *gkehubpb.ListMembershipsResponse
+		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.gkeHubMembershipClient.ListMemberships(ctx, req, settings.GRPC...)
+			return err
+		}, opts...)
+		if err != nil {
+			return nil, "", err
+		}
+
+		it.Response = resp
+		return resp.GetResources(), 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
+}
+
+// GetMembership gets the details of a Membership.
+func (c *GkeHubMembershipClient) GetMembership(ctx context.Context, req *gkehubpb.GetMembershipRequest, opts ...gax.CallOption) (*gkehubpb.Membership, 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.GetMembership[0:len(c.CallOptions.GetMembership):len(c.CallOptions.GetMembership)], opts...)
+	var resp *gkehubpb.Membership
+	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
+		var err error
+		resp, err = c.gkeHubMembershipClient.GetMembership(ctx, req, settings.GRPC...)
+		return err
+	}, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return resp, nil
+}
+
+// CreateMembership adds a new Membership.
+func (c *GkeHubMembershipClient) CreateMembership(ctx context.Context, req *gkehubpb.CreateMembershipRequest, opts ...gax.CallOption) (*CreateMembershipOperation, 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.CreateMembership[0:len(c.CallOptions.CreateMembership):len(c.CallOptions.CreateMembership)], opts...)
+	var resp *longrunningpb.Operation
+	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
+		var err error
+		resp, err = c.gkeHubMembershipClient.CreateMembership(ctx, req, settings.GRPC...)
+		return err
+	}, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return &CreateMembershipOperation{
+		lro: longrunning.InternalNewOperation(c.LROClient, resp),
+	}, nil
+}
+
+// DeleteMembership removes a Membership.
+func (c *GkeHubMembershipClient) DeleteMembership(ctx context.Context, req *gkehubpb.DeleteMembershipRequest, opts ...gax.CallOption) (*DeleteMembershipOperation, 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.DeleteMembership[0:len(c.CallOptions.DeleteMembership):len(c.CallOptions.DeleteMembership)], opts...)
+	var resp *longrunningpb.Operation
+	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
+		var err error
+		resp, err = c.gkeHubMembershipClient.DeleteMembership(ctx, req, settings.GRPC...)
+		return err
+	}, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return &DeleteMembershipOperation{
+		lro: longrunning.InternalNewOperation(c.LROClient, resp),
+	}, nil
+}
+
+// UpdateMembership updates an existing Membership.
+func (c *GkeHubMembershipClient) UpdateMembership(ctx context.Context, req *gkehubpb.UpdateMembershipRequest, opts ...gax.CallOption) (*UpdateMembershipOperation, 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.UpdateMembership[0:len(c.CallOptions.UpdateMembership):len(c.CallOptions.UpdateMembership)], opts...)
+	var resp *longrunningpb.Operation
+	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
+		var err error
+		resp, err = c.gkeHubMembershipClient.UpdateMembership(ctx, req, settings.GRPC...)
+		return err
+	}, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return &UpdateMembershipOperation{
+		lro: longrunning.InternalNewOperation(c.LROClient, resp),
+	}, nil
+}
+
+// GenerateConnectManifest generates the manifest for deployment of the GKE connect agent.
+func (c *GkeHubMembershipClient) GenerateConnectManifest(ctx context.Context, req *gkehubpb.GenerateConnectManifestRequest, opts ...gax.CallOption) (*gkehubpb.GenerateConnectManifestResponse, 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.GenerateConnectManifest[0:len(c.CallOptions.GenerateConnectManifest):len(c.CallOptions.GenerateConnectManifest)], opts...)
+	var resp *gkehubpb.GenerateConnectManifestResponse
+	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
+		var err error
+		resp, err = c.gkeHubMembershipClient.GenerateConnectManifest(ctx, req, settings.GRPC...)
+		return err
+	}, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return resp, nil
+}
+
+// ValidateExclusivity validateExclusivity validates the state of exclusivity in the cluster.
+// The validation does not depend on an existing Hub membership resource.
+func (c *GkeHubMembershipClient) ValidateExclusivity(ctx context.Context, req *gkehubpb.ValidateExclusivityRequest, opts ...gax.CallOption) (*gkehubpb.ValidateExclusivityResponse, 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.ValidateExclusivity[0:len(c.CallOptions.ValidateExclusivity):len(c.CallOptions.ValidateExclusivity)], opts...)
+	var resp *gkehubpb.ValidateExclusivityResponse
+	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
+		var err error
+		resp, err = c.gkeHubMembershipClient.ValidateExclusivity(ctx, req, settings.GRPC...)
+		return err
+	}, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return resp, nil
+}
+
+// GenerateExclusivityManifest generateExclusivityManifest generates the manifests to update the
+// exclusivity artifacts in the cluster if needed.
+//
+// Exclusivity artifacts include the Membership custom resource definition
+// (CRD) and the singleton Membership custom resource (CR). Combined with
+// ValidateExclusivity, exclusivity artifacts guarantee that a Kubernetes
+// cluster is only registered to a single GKE Hub.
+//
+// The Membership CRD is versioned, and may require conversion when the GKE
+// Hub API server begins serving a newer version of the CRD and
+// corresponding CR. The response will be the converted CRD and CR if there
+// are any differences between the versions.
+func (c *GkeHubMembershipClient) GenerateExclusivityManifest(ctx context.Context, req *gkehubpb.GenerateExclusivityManifestRequest, opts ...gax.CallOption) (*gkehubpb.GenerateExclusivityManifestResponse, 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.GenerateExclusivityManifest[0:len(c.CallOptions.GenerateExclusivityManifest):len(c.CallOptions.GenerateExclusivityManifest)], opts...)
+	var resp *gkehubpb.GenerateExclusivityManifestResponse
+	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
+		var err error
+		resp, err = c.gkeHubMembershipClient.GenerateExclusivityManifest(ctx, req, settings.GRPC...)
+		return err
+	}, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return resp, nil
+}
+
+// CreateMembershipOperation manages a long-running operation from CreateMembership.
+type CreateMembershipOperation struct {
+	lro *longrunning.Operation
+}
+
+// CreateMembershipOperation returns a new CreateMembershipOperation from a given name.
+// The name must be that of a previously created CreateMembershipOperation, possibly from a different process.
+func (c *GkeHubMembershipClient) CreateMembershipOperation(name string) *CreateMembershipOperation {
+	return &CreateMembershipOperation{
+		lro: longrunning.InternalNewOperation(c.LROClient, &longrunningpb.Operation{Name: name}),
+	}
+}
+
+// Wait blocks until the long-running operation is completed, returning the response and any errors encountered.
+//
+// See documentation of Poll for error-handling information.
+func (op *CreateMembershipOperation) Wait(ctx context.Context, opts ...gax.CallOption) (*gkehubpb.Membership, error) {
+	var resp gkehubpb.Membership
+	if err := op.lro.WaitWithInterval(ctx, &resp, time.Minute, opts...); err != nil {
+		return nil, err
+	}
+	return &resp, nil
+}
+
+// Poll fetches the latest state of the long-running operation.
+//
+// Poll also fetches the latest metadata, which can be retrieved by Metadata.
+//
+// If Poll fails, the error is returned and op is unmodified. If Poll succeeds and
+// the operation has completed with failure, the error is returned and op.Done will return true.
+// If Poll succeeds and the operation has completed successfully,
+// op.Done will return true, and the response of the operation is returned.
+// If Poll succeeds and the operation has not completed, the returned response and error are both nil.
+func (op *CreateMembershipOperation) Poll(ctx context.Context, opts ...gax.CallOption) (*gkehubpb.Membership, error) {
+	var resp gkehubpb.Membership
+	if err := op.lro.Poll(ctx, &resp, opts...); err != nil {
+		return nil, err
+	}
+	if !op.Done() {
+		return nil, nil
+	}
+	return &resp, nil
+}
+
+// Metadata returns metadata associated with the long-running operation.
+// Metadata itself does not contact the server, but Poll does.
+// To get the latest metadata, call this method after a successful call to Poll.
+// If the metadata is not available, the returned metadata and error are both nil.
+func (op *CreateMembershipOperation) Metadata() (*gkehubpb.OperationMetadata, error) {
+	var meta gkehubpb.OperationMetadata
+	if err := op.lro.Metadata(&meta); err == longrunning.ErrNoMetadata {
+		return nil, nil
+	} else if err != nil {
+		return nil, err
+	}
+	return &meta, nil
+}
+
+// Done reports whether the long-running operation has completed.
+func (op *CreateMembershipOperation) Done() bool {
+	return op.lro.Done()
+}
+
+// Name returns the name of the long-running operation.
+// The name is assigned by the server and is unique within the service from which the operation is created.
+func (op *CreateMembershipOperation) Name() string {
+	return op.lro.Name()
+}
+
+// DeleteMembershipOperation manages a long-running operation from DeleteMembership.
+type DeleteMembershipOperation struct {
+	lro *longrunning.Operation
+}
+
+// DeleteMembershipOperation returns a new DeleteMembershipOperation from a given name.
+// The name must be that of a previously created DeleteMembershipOperation, possibly from a different process.
+func (c *GkeHubMembershipClient) DeleteMembershipOperation(name string) *DeleteMembershipOperation {
+	return &DeleteMembershipOperation{
+		lro: longrunning.InternalNewOperation(c.LROClient, &longrunningpb.Operation{Name: name}),
+	}
+}
+
+// Wait blocks until the long-running operation is completed, returning the response and any errors encountered.
+//
+// See documentation of Poll for error-handling information.
+func (op *DeleteMembershipOperation) Wait(ctx context.Context, opts ...gax.CallOption) error {
+	return op.lro.WaitWithInterval(ctx, nil, time.Minute, opts...)
+}
+
+// Poll fetches the latest state of the long-running operation.
+//
+// Poll also fetches the latest metadata, which can be retrieved by Metadata.
+//
+// If Poll fails, the error is returned and op is unmodified. If Poll succeeds and
+// the operation has completed with failure, the error is returned and op.Done will return true.
+// If Poll succeeds and the operation has completed successfully,
+// op.Done will return true, and the response of the operation is returned.
+// If Poll succeeds and the operation has not completed, the returned response and error are both nil.
+func (op *DeleteMembershipOperation) Poll(ctx context.Context, opts ...gax.CallOption) error {
+	return op.lro.Poll(ctx, nil, opts...)
+}
+
+// Metadata returns metadata associated with the long-running operation.
+// Metadata itself does not contact the server, but Poll does.
+// To get the latest metadata, call this method after a successful call to Poll.
+// If the metadata is not available, the returned metadata and error are both nil.
+func (op *DeleteMembershipOperation) Metadata() (*gkehubpb.OperationMetadata, error) {
+	var meta gkehubpb.OperationMetadata
+	if err := op.lro.Metadata(&meta); err == longrunning.ErrNoMetadata {
+		return nil, nil
+	} else if err != nil {
+		return nil, err
+	}
+	return &meta, nil
+}
+
+// Done reports whether the long-running operation has completed.
+func (op *DeleteMembershipOperation) Done() bool {
+	return op.lro.Done()
+}
+
+// Name returns the name of the long-running operation.
+// The name is assigned by the server and is unique within the service from which the operation is created.
+func (op *DeleteMembershipOperation) Name() string {
+	return op.lro.Name()
+}
+
+// UpdateMembershipOperation manages a long-running operation from UpdateMembership.
+type UpdateMembershipOperation struct {
+	lro *longrunning.Operation
+}
+
+// UpdateMembershipOperation returns a new UpdateMembershipOperation from a given name.
+// The name must be that of a previously created UpdateMembershipOperation, possibly from a different process.
+func (c *GkeHubMembershipClient) UpdateMembershipOperation(name string) *UpdateMembershipOperation {
+	return &UpdateMembershipOperation{
+		lro: longrunning.InternalNewOperation(c.LROClient, &longrunningpb.Operation{Name: name}),
+	}
+}
+
+// Wait blocks until the long-running operation is completed, returning the response and any errors encountered.
+//
+// See documentation of Poll for error-handling information.
+func (op *UpdateMembershipOperation) Wait(ctx context.Context, opts ...gax.CallOption) (*gkehubpb.Membership, error) {
+	var resp gkehubpb.Membership
+	if err := op.lro.WaitWithInterval(ctx, &resp, time.Minute, opts...); err != nil {
+		return nil, err
+	}
+	return &resp, nil
+}
+
+// Poll fetches the latest state of the long-running operation.
+//
+// Poll also fetches the latest metadata, which can be retrieved by Metadata.
+//
+// If Poll fails, the error is returned and op is unmodified. If Poll succeeds and
+// the operation has completed with failure, the error is returned and op.Done will return true.
+// If Poll succeeds and the operation has completed successfully,
+// op.Done will return true, and the response of the operation is returned.
+// If Poll succeeds and the operation has not completed, the returned response and error are both nil.
+func (op *UpdateMembershipOperation) Poll(ctx context.Context, opts ...gax.CallOption) (*gkehubpb.Membership, error) {
+	var resp gkehubpb.Membership
+	if err := op.lro.Poll(ctx, &resp, opts...); err != nil {
+		return nil, err
+	}
+	if !op.Done() {
+		return nil, nil
+	}
+	return &resp, nil
+}
+
+// Metadata returns metadata associated with the long-running operation.
+// Metadata itself does not contact the server, but Poll does.
+// To get the latest metadata, call this method after a successful call to Poll.
+// If the metadata is not available, the returned metadata and error are both nil.
+func (op *UpdateMembershipOperation) Metadata() (*gkehubpb.OperationMetadata, error) {
+	var meta gkehubpb.OperationMetadata
+	if err := op.lro.Metadata(&meta); err == longrunning.ErrNoMetadata {
+		return nil, nil
+	} else if err != nil {
+		return nil, err
+	}
+	return &meta, nil
+}
+
+// Done reports whether the long-running operation has completed.
+func (op *UpdateMembershipOperation) Done() bool {
+	return op.lro.Done()
+}
+
+// Name returns the name of the long-running operation.
+// The name is assigned by the server and is unique within the service from which the operation is created.
+func (op *UpdateMembershipOperation) Name() string {
+	return op.lro.Name()
+}
+
+// MembershipIterator manages a stream of *gkehubpb.Membership.
+type MembershipIterator struct {
+	items    []*gkehubpb.Membership
+	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 []*gkehubpb.Membership, nextPageToken string, err error)
+}
+
+// PageInfo supports pagination. See the google.golang.org/api/iterator package for details.
+func (it *MembershipIterator) 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 *MembershipIterator) Next() (*gkehubpb.Membership, error) {
+	var item *gkehubpb.Membership
+	if err := it.nextFunc(); err != nil {
+		return item, err
+	}
+	item = it.items[0]
+	it.items = it.items[1:]
+	return item, nil
+}
+
+func (it *MembershipIterator) bufLen() int {
+	return len(it.items)
+}
+
+func (it *MembershipIterator) takeBuf() interface{} {
+	b := it.items
+	it.items = nil
+	return b
+}
diff --git a/gkehub/apiv1beta1/gke_hub_membership_client_example_test.go b/gkehub/apiv1beta1/gke_hub_membership_client_example_test.go
new file mode 100644
index 0000000..046f4e7
--- /dev/null
+++ b/gkehub/apiv1beta1/gke_hub_membership_client_example_test.go
@@ -0,0 +1,215 @@
+// 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 gkehub_test
+
+import (
+	"context"
+
+	gkehub "cloud.google.com/go/gkehub/apiv1beta1"
+	"google.golang.org/api/iterator"
+	gkehubpb "google.golang.org/genproto/googleapis/cloud/gkehub/v1beta1"
+)
+
+func ExampleNewGkeHubMembershipClient() {
+	ctx := context.Background()
+	c, err := gkehub.NewGkeHubMembershipClient(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+	// TODO: Use client.
+	_ = c
+}
+
+func ExampleGkeHubMembershipClient_ListMemberships() {
+	// import gkehubpb "google.golang.org/genproto/googleapis/cloud/gkehub/v1beta1"
+	// import "google.golang.org/api/iterator"
+
+	ctx := context.Background()
+	c, err := gkehub.NewGkeHubMembershipClient(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	req := &gkehubpb.ListMembershipsRequest{
+		// TODO: Fill request struct fields.
+	}
+	it := c.ListMemberships(ctx, req)
+	for {
+		resp, err := it.Next()
+		if err == iterator.Done {
+			break
+		}
+		if err != nil {
+			// TODO: Handle error.
+		}
+		// TODO: Use resp.
+		_ = resp
+	}
+}
+
+func ExampleGkeHubMembershipClient_GetMembership() {
+	// import gkehubpb "google.golang.org/genproto/googleapis/cloud/gkehub/v1beta1"
+
+	ctx := context.Background()
+	c, err := gkehub.NewGkeHubMembershipClient(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	req := &gkehubpb.GetMembershipRequest{
+		// TODO: Fill request struct fields.
+	}
+	resp, err := c.GetMembership(ctx, req)
+	if err != nil {
+		// TODO: Handle error.
+	}
+	// TODO: Use resp.
+	_ = resp
+}
+
+func ExampleGkeHubMembershipClient_CreateMembership() {
+	// import gkehubpb "google.golang.org/genproto/googleapis/cloud/gkehub/v1beta1"
+
+	ctx := context.Background()
+	c, err := gkehub.NewGkeHubMembershipClient(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	req := &gkehubpb.CreateMembershipRequest{
+		// TODO: Fill request struct fields.
+	}
+	op, err := c.CreateMembership(ctx, req)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	resp, err := op.Wait(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+	// TODO: Use resp.
+	_ = resp
+}
+
+func ExampleGkeHubMembershipClient_DeleteMembership() {
+	// import gkehubpb "google.golang.org/genproto/googleapis/cloud/gkehub/v1beta1"
+
+	ctx := context.Background()
+	c, err := gkehub.NewGkeHubMembershipClient(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	req := &gkehubpb.DeleteMembershipRequest{
+		// TODO: Fill request struct fields.
+	}
+	op, err := c.DeleteMembership(ctx, req)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	err = op.Wait(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+}
+
+func ExampleGkeHubMembershipClient_UpdateMembership() {
+	// import gkehubpb "google.golang.org/genproto/googleapis/cloud/gkehub/v1beta1"
+
+	ctx := context.Background()
+	c, err := gkehub.NewGkeHubMembershipClient(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	req := &gkehubpb.UpdateMembershipRequest{
+		// TODO: Fill request struct fields.
+	}
+	op, err := c.UpdateMembership(ctx, req)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	resp, err := op.Wait(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+	// TODO: Use resp.
+	_ = resp
+}
+
+func ExampleGkeHubMembershipClient_GenerateConnectManifest() {
+	// import gkehubpb "google.golang.org/genproto/googleapis/cloud/gkehub/v1beta1"
+
+	ctx := context.Background()
+	c, err := gkehub.NewGkeHubMembershipClient(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	req := &gkehubpb.GenerateConnectManifestRequest{
+		// TODO: Fill request struct fields.
+	}
+	resp, err := c.GenerateConnectManifest(ctx, req)
+	if err != nil {
+		// TODO: Handle error.
+	}
+	// TODO: Use resp.
+	_ = resp
+}
+
+func ExampleGkeHubMembershipClient_ValidateExclusivity() {
+	// import gkehubpb "google.golang.org/genproto/googleapis/cloud/gkehub/v1beta1"
+
+	ctx := context.Background()
+	c, err := gkehub.NewGkeHubMembershipClient(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	req := &gkehubpb.ValidateExclusivityRequest{
+		// TODO: Fill request struct fields.
+	}
+	resp, err := c.ValidateExclusivity(ctx, req)
+	if err != nil {
+		// TODO: Handle error.
+	}
+	// TODO: Use resp.
+	_ = resp
+}
+
+func ExampleGkeHubMembershipClient_GenerateExclusivityManifest() {
+	// import gkehubpb "google.golang.org/genproto/googleapis/cloud/gkehub/v1beta1"
+
+	ctx := context.Background()
+	c, err := gkehub.NewGkeHubMembershipClient(ctx)
+	if err != nil {
+		// TODO: Handle error.
+	}
+
+	req := &gkehubpb.GenerateExclusivityManifestRequest{
+		// TODO: Fill request struct fields.
+	}
+	resp, err := c.GenerateExclusivityManifest(ctx, req)
+	if err != nil {
+		// TODO: Handle error.
+	}
+	// TODO: Use resp.
+	_ = resp
+}
diff --git a/internal/.repo-metadata-full.json b/internal/.repo-metadata-full.json
index e1963fa..fcf4287 100644
--- a/internal/.repo-metadata-full.json
+++ b/internal/.repo-metadata-full.json
@@ -447,6 +447,14 @@
     "docs_url": "https://pkg.go.dev/cloud.google.com/go/gaming/apiv1beta",
     "release_level": "beta"
   },
+  "cloud.google.com/go/gkehub/apiv1beta1": {
+    "distribution_name": "cloud.google.com/go/gkehub/apiv1beta1",
+    "description": "GKE Hub",
+    "language": "Go",
+    "client_library_type": "generated",
+    "docs_url": "https://pkg.go.dev/cloud.google.com/go/gkehub/apiv1beta1",
+    "release_level": "beta"
+  },
   "cloud.google.com/go/iam": {
     "distribution_name": "cloud.google.com/go/iam",
     "description": "Cloud IAM",
diff --git a/internal/gapicgen/generator/config.go b/internal/gapicgen/generator/config.go
index 54130f9..60b3d50 100644
--- a/internal/gapicgen/generator/config.go
+++ b/internal/gapicgen/generator/config.go
@@ -998,6 +998,14 @@
 		apiServiceConfigPath:  "google/cloud/recommendationengine/v1beta1/recommendationengine_v1beta1.yaml",
 		releaseLevel:          "beta",
 	},
+	{
+		inputDirectoryPath:    "google/cloud/gkehub/v1beta1",
+		pkg:                   "gkehub",
+		importPath:            "cloud.google.com/go/gkehub/apiv1beta1",
+		gRPCServiceConfigPath: "google/cloud/gkehub/v1beta1/membership_grpc_service_config.json",
+		apiServiceConfigPath:  "google/cloud/gkehub/v1beta1/gkehub_v1beta1.yaml",
+		releaseLevel:          "beta",
+	},
 
 	// Non-Cloud APIs
 	{