monitoring/apiv3/metric_client.go - third_party/github.com/googleapis/google-cloud-go - Git at Google

 // Copyright 2020 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 monitoring

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

 	"cloud.google.com/go/monitoring/apiv3/v2/monitoringpb"
 	gax "github.com/googleapis/gax-go/v2"
 	"google.golang.org/api/iterator"
 	"google.golang.org/api/option"
 	gtransport "google.golang.org/api/transport/grpc"
 	metricpb "google.golang.org/genproto/googleapis/api/metric"
 	monitoredrespb "google.golang.org/genproto/googleapis/api/monitoredres"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/metadata"
 	"google.golang.org/protobuf/proto"
 )

 var newMetricClientHook clientHook

 // MetricCallOptions contains the retry settings for each method of MetricClient.
 type MetricCallOptions struct {
 	ListMonitoredResourceDescriptors []gax.CallOption
 	GetMonitoredResourceDescriptor   []gax.CallOption
 	ListMetricDescriptors            []gax.CallOption
 	GetMetricDescriptor              []gax.CallOption
 	CreateMetricDescriptor           []gax.CallOption
 	DeleteMetricDescriptor           []gax.CallOption
 	ListTimeSeries                   []gax.CallOption
 	CreateTimeSeries                 []gax.CallOption
 }

 func defaultMetricClientOptions() []option.ClientOption {
 	return []option.ClientOption{
 		option.WithEndpoint("monitoring.googleapis.com:443"),
 		option.WithGRPCDialOption(grpc.WithDisableServiceConfig()),
 		option.WithScopes(DefaultAuthScopes()...),
 		option.WithGRPCDialOption(grpc.WithDefaultCallOptions(
 			grpc.MaxCallRecvMsgSize(math.MaxInt32))),
 	}
 }

 func defaultMetricCallOptions() *MetricCallOptions {
 	return &MetricCallOptions{
 		ListMonitoredResourceDescriptors: []gax.CallOption{
 			gax.WithRetry(func() gax.Retryer {
 				return gax.OnCodes([]codes.Code{
 					codes.DeadlineExceeded,
 					codes.Unavailable,
 				}, gax.Backoff{
 					Initial:    100 * time.Millisecond,
 					Max:        30000 * time.Millisecond,
 					Multiplier: 1.30,
 				})
 			}),
 		},
 		GetMonitoredResourceDescriptor: []gax.CallOption{
 			gax.WithRetry(func() gax.Retryer {
 				return gax.OnCodes([]codes.Code{
 					codes.DeadlineExceeded,
 					codes.Unavailable,
 				}, gax.Backoff{
 					Initial:    100 * time.Millisecond,
 					Max:        30000 * time.Millisecond,
 					Multiplier: 1.30,
 				})
 			}),
 		},
 		ListMetricDescriptors: []gax.CallOption{
 			gax.WithRetry(func() gax.Retryer {
 				return gax.OnCodes([]codes.Code{
 					codes.DeadlineExceeded,
 					codes.Unavailable,
 				}, gax.Backoff{
 					Initial:    100 * time.Millisecond,
 					Max:        30000 * time.Millisecond,
 					Multiplier: 1.30,
 				})
 			}),
 		},
 		GetMetricDescriptor: []gax.CallOption{
 			gax.WithRetry(func() gax.Retryer {
 				return gax.OnCodes([]codes.Code{
 					codes.DeadlineExceeded,
 					codes.Unavailable,
 				}, gax.Backoff{
 					Initial:    100 * time.Millisecond,
 					Max:        30000 * time.Millisecond,
 					Multiplier: 1.30,
 				})
 			}),
 		},
 		CreateMetricDescriptor: []gax.CallOption{},
 		DeleteMetricDescriptor: []gax.CallOption{
 			gax.WithRetry(func() gax.Retryer {
 				return gax.OnCodes([]codes.Code{
 					codes.DeadlineExceeded,
 					codes.Unavailable,
 				}, gax.Backoff{
 					Initial:    100 * time.Millisecond,
 					Max:        30000 * time.Millisecond,
 					Multiplier: 1.30,
 				})
 			}),
 		},
 		ListTimeSeries: []gax.CallOption{
 			gax.WithRetry(func() gax.Retryer {
 				return gax.OnCodes([]codes.Code{
 					codes.DeadlineExceeded,
 					codes.Unavailable,
 				}, gax.Backoff{
 					Initial:    100 * time.Millisecond,
 					Max:        30000 * time.Millisecond,
 					Multiplier: 1.30,
 				})
 			}),
 		},
 		CreateTimeSeries: []gax.CallOption{},
 	}
 }

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

 	// The gRPC API client.
 	metricClient monitoringpb.MetricServiceClient

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

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

 // NewMetricClient creates a new metric service client.
 //
 // Manages metric descriptors, monitored resource descriptors, and
 // time series data.
 func NewMetricClient(ctx context.Context, opts ...option.ClientOption) (*MetricClient, error) {
 	clientOpts := defaultMetricClientOptions()

 	if newMetricClientHook != nil {
 		hookOpts, err := newMetricClientHook(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
 	}
 	c := &MetricClient{
 		connPool:    connPool,
 		CallOptions: defaultMetricCallOptions(),

 		metricClient: monitoringpb.NewMetricServiceClient(connPool),
 	}
 	c.setGoogleClientInfo()

 	return c, nil
 }

 // Connection returns a connection to the API service.
 //
 // Deprecated.
 func (c *MetricClient) 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 *MetricClient) 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 *MetricClient) setGoogleClientInfo(keyval ...string) {
 	kv := append([]string{"gl-go", gax.GoVersion}, keyval...)
 	kv = append(kv, "gapic", versionClient, "gax", gax.Version, "grpc", grpc.Version)
 	c.xGoogMetadata = metadata.Pairs("x-goog-api-client", gax.XGoogHeader(kv...))
 }

 // ListMonitoredResourceDescriptors lists monitored resource descriptors that match a filter. This method does not require a Workspace.
 func (c *MetricClient) ListMonitoredResourceDescriptors(ctx context.Context, req *monitoringpb.ListMonitoredResourceDescriptorsRequest, opts ...gax.CallOption) *MonitoredResourceDescriptorIterator {
 	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.ListMonitoredResourceDescriptors[0:len(c.CallOptions.ListMonitoredResourceDescriptors):len(c.CallOptions.ListMonitoredResourceDescriptors)], opts...)
 	it := &MonitoredResourceDescriptorIterator{}
 	req = proto.Clone(req).(*monitoringpb.ListMonitoredResourceDescriptorsRequest)
 	it.InternalFetch = func(pageSize int, pageToken string) ([]*monitoredrespb.MonitoredResourceDescriptor, string, error) {
 		var resp *monitoringpb.ListMonitoredResourceDescriptorsResponse
 		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.metricClient.ListMonitoredResourceDescriptors(ctx, req, settings.GRPC...)
 			return err
 		}, opts...)
 		if err != nil {
 			return nil, "", err
 		}

 		it.Response = resp
 		return resp.ResourceDescriptors, resp.NextPageToken, 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.PageSize)
 	it.pageInfo.Token = req.PageToken
 	return it
 }

 // GetMonitoredResourceDescriptor gets a single monitored resource descriptor. This method does not require a Workspace.
 func (c *MetricClient) GetMonitoredResourceDescriptor(ctx context.Context, req *monitoringpb.GetMonitoredResourceDescriptorRequest, opts ...gax.CallOption) (*monitoredrespb.MonitoredResourceDescriptor, error) {
 	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.GetMonitoredResourceDescriptor[0:len(c.CallOptions.GetMonitoredResourceDescriptor):len(c.CallOptions.GetMonitoredResourceDescriptor)], opts...)
 	var resp *monitoredrespb.MonitoredResourceDescriptor
 	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
 		var err error
 		resp, err = c.metricClient.GetMonitoredResourceDescriptor(ctx, req, settings.GRPC...)
 		return err
 	}, opts...)
 	if err != nil {
 		return nil, err
 	}
 	return resp, nil
 }

 // ListMetricDescriptors lists metric descriptors that match a filter. This method does not require a Workspace.
 func (c *MetricClient) ListMetricDescriptors(ctx context.Context, req *monitoringpb.ListMetricDescriptorsRequest, opts ...gax.CallOption) *MetricDescriptorIterator {
 	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.ListMetricDescriptors[0:len(c.CallOptions.ListMetricDescriptors):len(c.CallOptions.ListMetricDescriptors)], opts...)
 	it := &MetricDescriptorIterator{}
 	req = proto.Clone(req).(*monitoringpb.ListMetricDescriptorsRequest)
 	it.InternalFetch = func(pageSize int, pageToken string) ([]*metricpb.MetricDescriptor, string, error) {
 		var resp *monitoringpb.ListMetricDescriptorsResponse
 		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.metricClient.ListMetricDescriptors(ctx, req, settings.GRPC...)
 			return err
 		}, opts...)
 		if err != nil {
 			return nil, "", err
 		}

 		it.Response = resp
 		return resp.MetricDescriptors, resp.NextPageToken, 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.PageSize)
 	it.pageInfo.Token = req.PageToken
 	return it
 }

 // GetMetricDescriptor gets a single metric descriptor. This method does not require a Workspace.
 func (c *MetricClient) GetMetricDescriptor(ctx context.Context, req *monitoringpb.GetMetricDescriptorRequest, opts ...gax.CallOption) (*metricpb.MetricDescriptor, error) {
 	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.GetMetricDescriptor[0:len(c.CallOptions.GetMetricDescriptor):len(c.CallOptions.GetMetricDescriptor)], opts...)
 	var resp *metricpb.MetricDescriptor
 	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
 		var err error
 		resp, err = c.metricClient.GetMetricDescriptor(ctx, req, settings.GRPC...)
 		return err
 	}, opts...)
 	if err != nil {
 		return nil, err
 	}
 	return resp, nil
 }

 // CreateMetricDescriptor creates a new metric descriptor.
 // User-created metric descriptors define
 // custom metrics (at https://cloud.google.com/monitoring/custom-metrics).
 func (c *MetricClient) CreateMetricDescriptor(ctx context.Context, req *monitoringpb.CreateMetricDescriptorRequest, opts ...gax.CallOption) (*metricpb.MetricDescriptor, error) {
 	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.CreateMetricDescriptor[0:len(c.CallOptions.CreateMetricDescriptor):len(c.CallOptions.CreateMetricDescriptor)], opts...)
 	var resp *metricpb.MetricDescriptor
 	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
 		var err error
 		resp, err = c.metricClient.CreateMetricDescriptor(ctx, req, settings.GRPC...)
 		return err
 	}, opts...)
 	if err != nil {
 		return nil, err
 	}
 	return resp, nil
 }

 // DeleteMetricDescriptor deletes a metric descriptor. Only user-created
 // custom metrics (at https://cloud.google.com/monitoring/custom-metrics) can be
 // deleted.
 func (c *MetricClient) DeleteMetricDescriptor(ctx context.Context, req *monitoringpb.DeleteMetricDescriptorRequest, opts ...gax.CallOption) error {
 	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.DeleteMetricDescriptor[0:len(c.CallOptions.DeleteMetricDescriptor):len(c.CallOptions.DeleteMetricDescriptor)], opts...)
 	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
 		var err error
 		_, err = c.metricClient.DeleteMetricDescriptor(ctx, req, settings.GRPC...)
 		return err
 	}, opts...)
 	return err
 }

 // ListTimeSeries lists time series that match a filter. This method does not require a Workspace.
 func (c *MetricClient) ListTimeSeries(ctx context.Context, req *monitoringpb.ListTimeSeriesRequest, opts ...gax.CallOption) *TimeSeriesIterator {
 	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.ListTimeSeries[0:len(c.CallOptions.ListTimeSeries):len(c.CallOptions.ListTimeSeries)], opts...)
 	it := &TimeSeriesIterator{}
 	req = proto.Clone(req).(*monitoringpb.ListTimeSeriesRequest)
 	it.InternalFetch = func(pageSize int, pageToken string) ([]*monitoringpb.TimeSeries, string, error) {
 		var resp *monitoringpb.ListTimeSeriesResponse
 		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.metricClient.ListTimeSeries(ctx, req, settings.GRPC...)
 			return err
 		}, opts...)
 		if err != nil {
 			return nil, "", err
 		}

 		it.Response = resp
 		return resp.TimeSeries, resp.NextPageToken, 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.PageSize)
 	it.pageInfo.Token = req.PageToken
 	return it
 }

 // CreateTimeSeries creates or adds data to one or more time series.
 // The response is empty if all time series in the request were written.
 // If any time series could not be written, a corresponding failure message is
 // included in the error response.
 func (c *MetricClient) CreateTimeSeries(ctx context.Context, req *monitoringpb.CreateTimeSeriesRequest, opts ...gax.CallOption) error {
 	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.CreateTimeSeries[0:len(c.CallOptions.CreateTimeSeries):len(c.CallOptions.CreateTimeSeries)], opts...)
 	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
 		var err error
 		_, err = c.metricClient.CreateTimeSeries(ctx, req, settings.GRPC...)
 		return err
 	}, opts...)
 	return err
 }

 // MetricDescriptorIterator manages a stream of *metricpb.MetricDescriptor.
 type MetricDescriptorIterator struct {
 	items    []*metricpb.MetricDescriptor
 	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 []*metricpb.MetricDescriptor, nextPageToken string, err error)
 }

 // PageInfo supports pagination. See the google.golang.org/api/iterator package for details.
 func (it *MetricDescriptorIterator) 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 *MetricDescriptorIterator) Next() (*metricpb.MetricDescriptor, error) {
 	var item *metricpb.MetricDescriptor
 	if err := it.nextFunc(); err != nil {
 		return item, err
 	}
 	item = it.items[0]
 	it.items = it.items[1:]
 	return item, nil
 }

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

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

 // MonitoredResourceDescriptorIterator manages a stream of *monitoredrespb.MonitoredResourceDescriptor.
 type MonitoredResourceDescriptorIterator struct {
 	items    []*monitoredrespb.MonitoredResourceDescriptor
 	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 []*monitoredrespb.MonitoredResourceDescriptor, nextPageToken string, err error)
 }

 // PageInfo supports pagination. See the google.golang.org/api/iterator package for details.
 func (it *MonitoredResourceDescriptorIterator) 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 *MonitoredResourceDescriptorIterator) Next() (*monitoredrespb.MonitoredResourceDescriptor, error) {
 	var item *monitoredrespb.MonitoredResourceDescriptor
 	if err := it.nextFunc(); err != nil {
 		return item, err
 	}
 	item = it.items[0]
 	it.items = it.items[1:]
 	return item, nil
 }

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

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

 // TimeSeriesIterator manages a stream of *monitoringpb.TimeSeries.
 type TimeSeriesIterator struct {
 	items    []*monitoringpb.TimeSeries
 	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 []*monitoringpb.TimeSeries, nextPageToken string, err error)
 }

 // PageInfo supports pagination. See the google.golang.org/api/iterator package for details.
 func (it *TimeSeriesIterator) 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 *TimeSeriesIterator) Next() (*monitoringpb.TimeSeries, error) {
 	var item *monitoringpb.TimeSeries
 	if err := it.nextFunc(); err != nil {
 		return item, err
 	}
 	item = it.items[0]
 	it.items = it.items[1:]
 	return item, nil
 }

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

 func (it *TimeSeriesIterator) takeBuf() interface{} {
 	b := it.items
 	it.items = nil
 	return b
 }
	// Copyright 2020 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 monitoring

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

	"cloud.google.com/go/monitoring/apiv3/v2/monitoringpb"
	gax "github.com/googleapis/gax-go/v2"
	"google.golang.org/api/iterator"
	"google.golang.org/api/option"
	gtransport "google.golang.org/api/transport/grpc"
	metricpb "google.golang.org/genproto/googleapis/api/metric"
	monitoredrespb "google.golang.org/genproto/googleapis/api/monitoredres"
	"google.golang.org/grpc"
	"google.golang.org/grpc/codes"
	"google.golang.org/grpc/metadata"
	"google.golang.org/protobuf/proto"
	)

	var newMetricClientHook clientHook

	// MetricCallOptions contains the retry settings for each method of MetricClient.
	type MetricCallOptions struct {
	ListMonitoredResourceDescriptors []gax.CallOption
	GetMonitoredResourceDescriptor []gax.CallOption
	ListMetricDescriptors []gax.CallOption
	GetMetricDescriptor []gax.CallOption
	CreateMetricDescriptor []gax.CallOption
	DeleteMetricDescriptor []gax.CallOption
	ListTimeSeries []gax.CallOption
	CreateTimeSeries []gax.CallOption
	}

	func defaultMetricClientOptions() []option.ClientOption {
	return []option.ClientOption{
	option.WithEndpoint("monitoring.googleapis.com:443"),
	option.WithGRPCDialOption(grpc.WithDisableServiceConfig()),
	option.WithScopes(DefaultAuthScopes()...),
	option.WithGRPCDialOption(grpc.WithDefaultCallOptions(
	grpc.MaxCallRecvMsgSize(math.MaxInt32))),
	}
	}

	func defaultMetricCallOptions() *MetricCallOptions {
	return &MetricCallOptions{
	ListMonitoredResourceDescriptors: []gax.CallOption{
	gax.WithRetry(func() gax.Retryer {
	return gax.OnCodes([]codes.Code{
	codes.DeadlineExceeded,
	codes.Unavailable,
	}, gax.Backoff{
	Initial: 100 * time.Millisecond,
	Max: 30000 * time.Millisecond,
	Multiplier: 1.30,
	})
	}),
	},
	GetMonitoredResourceDescriptor: []gax.CallOption{
	gax.WithRetry(func() gax.Retryer {
	return gax.OnCodes([]codes.Code{
	codes.DeadlineExceeded,
	codes.Unavailable,
	}, gax.Backoff{
	Initial: 100 * time.Millisecond,
	Max: 30000 * time.Millisecond,
	Multiplier: 1.30,
	})
	}),
	},
	ListMetricDescriptors: []gax.CallOption{
	gax.WithRetry(func() gax.Retryer {
	return gax.OnCodes([]codes.Code{
	codes.DeadlineExceeded,
	codes.Unavailable,
	}, gax.Backoff{
	Initial: 100 * time.Millisecond,
	Max: 30000 * time.Millisecond,
	Multiplier: 1.30,
	})
	}),
	},
	GetMetricDescriptor: []gax.CallOption{
	gax.WithRetry(func() gax.Retryer {
	return gax.OnCodes([]codes.Code{
	codes.DeadlineExceeded,
	codes.Unavailable,
	}, gax.Backoff{
	Initial: 100 * time.Millisecond,
	Max: 30000 * time.Millisecond,
	Multiplier: 1.30,
	})
	}),
	},
	CreateMetricDescriptor: []gax.CallOption{},
	DeleteMetricDescriptor: []gax.CallOption{
	gax.WithRetry(func() gax.Retryer {
	return gax.OnCodes([]codes.Code{
	codes.DeadlineExceeded,
	codes.Unavailable,
	}, gax.Backoff{
	Initial: 100 * time.Millisecond,
	Max: 30000 * time.Millisecond,
	Multiplier: 1.30,
	})
	}),
	},
	ListTimeSeries: []gax.CallOption{
	gax.WithRetry(func() gax.Retryer {
	return gax.OnCodes([]codes.Code{
	codes.DeadlineExceeded,
	codes.Unavailable,
	}, gax.Backoff{
	Initial: 100 * time.Millisecond,
	Max: 30000 * time.Millisecond,
	Multiplier: 1.30,
	})
	}),
	},
	CreateTimeSeries: []gax.CallOption{},
	}
	}

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

	// The gRPC API client.
	metricClient monitoringpb.MetricServiceClient

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

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

	// NewMetricClient creates a new metric service client.
	//
	// Manages metric descriptors, monitored resource descriptors, and
	// time series data.
	func NewMetricClient(ctx context.Context, opts ...option.ClientOption) (*MetricClient, error) {
	clientOpts := defaultMetricClientOptions()

	if newMetricClientHook != nil {
	hookOpts, err := newMetricClientHook(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
	}
	c := &MetricClient{
	connPool: connPool,
	CallOptions: defaultMetricCallOptions(),

	metricClient: monitoringpb.NewMetricServiceClient(connPool),
	}
	c.setGoogleClientInfo()

	return c, nil
	}

	// Connection returns a connection to the API service.
	//
	// Deprecated.
	func (c MetricClient) 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 *MetricClient) 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 *MetricClient) setGoogleClientInfo(keyval ...string) {
	kv := append([]string{"gl-go", gax.GoVersion}, keyval...)
	kv = append(kv, "gapic", versionClient, "gax", gax.Version, "grpc", grpc.Version)
	c.xGoogMetadata = metadata.Pairs("x-goog-api-client", gax.XGoogHeader(kv...))
	}

	// ListMonitoredResourceDescriptors lists monitored resource descriptors that match a filter. This method does not require a Workspace.
	func (c MetricClient) ListMonitoredResourceDescriptors(ctx context.Context, req monitoringpb.ListMonitoredResourceDescriptorsRequest, opts ...gax.CallOption) *MonitoredResourceDescriptorIterator {
	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.ListMonitoredResourceDescriptors[0:len(c.CallOptions.ListMonitoredResourceDescriptors):len(c.CallOptions.ListMonitoredResourceDescriptors)], opts...)
	it := &MonitoredResourceDescriptorIterator{}
	req = proto.Clone(req).(*monitoringpb.ListMonitoredResourceDescriptorsRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*monitoredrespb.MonitoredResourceDescriptor, string, error) {
	var resp *monitoringpb.ListMonitoredResourceDescriptorsResponse
	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.metricClient.ListMonitoredResourceDescriptors(ctx, req, settings.GRPC...)
	return err
	}, opts...)
	if err != nil {
	return nil, "", err
	}

	it.Response = resp
	return resp.ResourceDescriptors, resp.NextPageToken, 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.PageSize)
	it.pageInfo.Token = req.PageToken
	return it
	}

	// GetMonitoredResourceDescriptor gets a single monitored resource descriptor. This method does not require a Workspace.
	func (c MetricClient) GetMonitoredResourceDescriptor(ctx context.Context, req monitoringpb.GetMonitoredResourceDescriptorRequest, opts ...gax.CallOption) (*monitoredrespb.MonitoredResourceDescriptor, error) {
	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.GetMonitoredResourceDescriptor[0:len(c.CallOptions.GetMonitoredResourceDescriptor):len(c.CallOptions.GetMonitoredResourceDescriptor)], opts...)
	var resp *monitoredrespb.MonitoredResourceDescriptor
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
	var err error
	resp, err = c.metricClient.GetMonitoredResourceDescriptor(ctx, req, settings.GRPC...)
	return err
	}, opts...)
	if err != nil {
	return nil, err
	}
	return resp, nil
	}

	// ListMetricDescriptors lists metric descriptors that match a filter. This method does not require a Workspace.
	func (c MetricClient) ListMetricDescriptors(ctx context.Context, req monitoringpb.ListMetricDescriptorsRequest, opts ...gax.CallOption) *MetricDescriptorIterator {
	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.ListMetricDescriptors[0:len(c.CallOptions.ListMetricDescriptors):len(c.CallOptions.ListMetricDescriptors)], opts...)
	it := &MetricDescriptorIterator{}
	req = proto.Clone(req).(*monitoringpb.ListMetricDescriptorsRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*metricpb.MetricDescriptor, string, error) {
	var resp *monitoringpb.ListMetricDescriptorsResponse
	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.metricClient.ListMetricDescriptors(ctx, req, settings.GRPC...)
	return err
	}, opts...)
	if err != nil {
	return nil, "", err
	}

	it.Response = resp
	return resp.MetricDescriptors, resp.NextPageToken, 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.PageSize)
	it.pageInfo.Token = req.PageToken
	return it
	}

	// GetMetricDescriptor gets a single metric descriptor. This method does not require a Workspace.
	func (c MetricClient) GetMetricDescriptor(ctx context.Context, req monitoringpb.GetMetricDescriptorRequest, opts ...gax.CallOption) (*metricpb.MetricDescriptor, error) {
	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.GetMetricDescriptor[0:len(c.CallOptions.GetMetricDescriptor):len(c.CallOptions.GetMetricDescriptor)], opts...)
	var resp *metricpb.MetricDescriptor
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
	var err error
	resp, err = c.metricClient.GetMetricDescriptor(ctx, req, settings.GRPC...)
	return err
	}, opts...)
	if err != nil {
	return nil, err
	}
	return resp, nil
	}

	// CreateMetricDescriptor creates a new metric descriptor.
	// User-created metric descriptors define
	// custom metrics (at https://cloud.google.com/monitoring/custom-metrics).
	func (c MetricClient) CreateMetricDescriptor(ctx context.Context, req monitoringpb.CreateMetricDescriptorRequest, opts ...gax.CallOption) (*metricpb.MetricDescriptor, error) {
	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.CreateMetricDescriptor[0:len(c.CallOptions.CreateMetricDescriptor):len(c.CallOptions.CreateMetricDescriptor)], opts...)
	var resp *metricpb.MetricDescriptor
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
	var err error
	resp, err = c.metricClient.CreateMetricDescriptor(ctx, req, settings.GRPC...)
	return err
	}, opts...)
	if err != nil {
	return nil, err
	}
	return resp, nil
	}

	// DeleteMetricDescriptor deletes a metric descriptor. Only user-created
	// custom metrics (at https://cloud.google.com/monitoring/custom-metrics) can be
	// deleted.
	func (c MetricClient) DeleteMetricDescriptor(ctx context.Context, req monitoringpb.DeleteMetricDescriptorRequest, opts ...gax.CallOption) error {
	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.DeleteMetricDescriptor[0:len(c.CallOptions.DeleteMetricDescriptor):len(c.CallOptions.DeleteMetricDescriptor)], opts...)
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
	var err error
	_, err = c.metricClient.DeleteMetricDescriptor(ctx, req, settings.GRPC...)
	return err
	}, opts...)
	return err
	}

	// ListTimeSeries lists time series that match a filter. This method does not require a Workspace.
	func (c MetricClient) ListTimeSeries(ctx context.Context, req monitoringpb.ListTimeSeriesRequest, opts ...gax.CallOption) *TimeSeriesIterator {
	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.ListTimeSeries[0:len(c.CallOptions.ListTimeSeries):len(c.CallOptions.ListTimeSeries)], opts...)
	it := &TimeSeriesIterator{}
	req = proto.Clone(req).(*monitoringpb.ListTimeSeriesRequest)
	it.InternalFetch = func(pageSize int, pageToken string) ([]*monitoringpb.TimeSeries, string, error) {
	var resp *monitoringpb.ListTimeSeriesResponse
	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.metricClient.ListTimeSeries(ctx, req, settings.GRPC...)
	return err
	}, opts...)
	if err != nil {
	return nil, "", err
	}

	it.Response = resp
	return resp.TimeSeries, resp.NextPageToken, 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.PageSize)
	it.pageInfo.Token = req.PageToken
	return it
	}

	// CreateTimeSeries creates or adds data to one or more time series.
	// The response is empty if all time series in the request were written.
	// If any time series could not be written, a corresponding failure message is
	// included in the error response.
	func (c MetricClient) CreateTimeSeries(ctx context.Context, req monitoringpb.CreateTimeSeriesRequest, opts ...gax.CallOption) error {
	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.CreateTimeSeries[0:len(c.CallOptions.CreateTimeSeries):len(c.CallOptions.CreateTimeSeries)], opts...)
	err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
	var err error
	_, err = c.metricClient.CreateTimeSeries(ctx, req, settings.GRPC...)
	return err
	}, opts...)
	return err
	}

	// MetricDescriptorIterator manages a stream of *metricpb.MetricDescriptor.
	type MetricDescriptorIterator struct {
	items []*metricpb.MetricDescriptor
	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 []*metricpb.MetricDescriptor, nextPageToken string, err error)
	}

	// PageInfo supports pagination. See the google.golang.org/api/iterator package for details.
	func (it MetricDescriptorIterator) 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 MetricDescriptorIterator) Next() (metricpb.MetricDescriptor, error) {
	var item *metricpb.MetricDescriptor
	if err := it.nextFunc(); err != nil {
	return item, err
	}
	item = it.items[0]
	it.items = it.items[1:]
	return item, nil
	}

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

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

	// MonitoredResourceDescriptorIterator manages a stream of *monitoredrespb.MonitoredResourceDescriptor.
	type MonitoredResourceDescriptorIterator struct {
	items []*monitoredrespb.MonitoredResourceDescriptor
	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 []*monitoredrespb.MonitoredResourceDescriptor, nextPageToken string, err error)
	}

	// PageInfo supports pagination. See the google.golang.org/api/iterator package for details.
	func (it MonitoredResourceDescriptorIterator) 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 MonitoredResourceDescriptorIterator) Next() (monitoredrespb.MonitoredResourceDescriptor, error) {
	var item *monitoredrespb.MonitoredResourceDescriptor
	if err := it.nextFunc(); err != nil {
	return item, err
	}
	item = it.items[0]
	it.items = it.items[1:]
	return item, nil
	}

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

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

	// TimeSeriesIterator manages a stream of *monitoringpb.TimeSeries.
	type TimeSeriesIterator struct {
	items []*monitoringpb.TimeSeries
	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 []*monitoringpb.TimeSeries, nextPageToken string, err error)
	}

	// PageInfo supports pagination. See the google.golang.org/api/iterator package for details.
	func (it TimeSeriesIterator) 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 TimeSeriesIterator) Next() (monitoringpb.TimeSeries, error) {
	var item *monitoringpb.TimeSeries
	if err := it.nextFunc(); err != nil {
	return item, err
	}
	item = it.items[0]
	it.items = it.items[1:]
	return item, nil
	}

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

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