// ListMonitoredResourceDescriptors lists the monitored resource descriptors used by Stackdriver Logging.
func (c *Client) ListMonitoredResourceDescriptors(ctx context.Context, req *loggingpb.ListMonitoredResourceDescriptorsRequest) *MonitoredResourceDescriptorIterator {
	md, _ := metadata.FromContext(ctx)
	ctx = metadata.NewContext(ctx, metadata.Join(md, c.metadata))
	it := &MonitoredResourceDescriptorIterator{}

	fetch := func(pageSize int, pageToken string) (string, error) {
		var resp *loggingpb.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) error {
			var err error
			resp, err = c.client.ListMonitoredResourceDescriptors(ctx, req)
			return err
		}, c.CallOptions.ListMonitoredResourceDescriptors...)
		if err != nil {
			return "", err
		}
		it.items = append(it.items, resp.ResourceDescriptors...)
		return resp.NextPageToken, nil
	}
	bufLen := func() int { return len(it.items) }
	takeBuf := func() interface{} {
		b := it.items
		it.items = nil
		return b
	}

	it.pageInfo, it.nextFunc = iterator.NewPageInfo(fetch, bufLen, takeBuf)
	return it
}

// ListLogMetrics lists logs-based metrics.
func (c *Client) ListLogMetrics(ctx context.Context, req *google_logging_v2.ListLogMetricsRequest) *LogMetricIterator {
	ctx = metadata.NewContext(ctx, c.metadata)
	it := &LogMetricIterator{}
	it.apiCall = func() error {
		if it.atLastPage {
			return Done
		}
		var resp *google_logging_v2.ListLogMetricsResponse
		err := gax.Invoke(ctx, func(ctx context.Context) error {
			var err error
			req.PageToken = it.nextPageToken
			req.PageSize = it.pageSize
			resp, err = c.client.ListLogMetrics(ctx, req)
			return err
		}, c.callOptions["ListLogMetrics"]...)
		if err != nil {
			return err
		}
		if resp.NextPageToken == "" {
			it.atLastPage = true
		} else {
			it.nextPageToken = resp.NextPageToken
		}
		it.items = resp.Metrics
		return nil
	}
	return it
}

// ListSubscriptions lists matching subscriptions.
func (c *SubscriberClient) ListSubscriptions(ctx context.Context, req *pubsubpb.ListSubscriptionsRequest) *SubscriptionIterator {
	md, _ := metadata.FromContext(ctx)
	ctx = metadata.NewContext(ctx, metadata.Join(md, c.metadata))
	it := &SubscriptionIterator{}
	it.InternalFetch = func(pageSize int, pageToken string) ([]*pubsubpb.Subscription, string, error) {
		var resp *pubsubpb.ListSubscriptionsResponse
		req.PageToken = pageToken
		if pageSize > math.MaxInt32 {
			req.PageSize = math.MaxInt32
		} else {
			req.PageSize = int32(pageSize)
		}
		err := gax.Invoke(ctx, func(ctx context.Context) error {
			var err error
			resp, err = c.subscriberClient.ListSubscriptions(ctx, req)
			return err
		}, c.CallOptions.ListSubscriptions...)
		if err != nil {
			return nil, "", err
		}
		return resp.Subscriptions, 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)
	return it
}

// ModifyAckDeadline modifies the ack deadline for a specific message. This method is useful
// to indicate that more time is needed to process a message by the
// subscriber, or to make the message available for redelivery if the
// processing was interrupted.
func (c *SubscriberClient) ModifyAckDeadline(ctx context.Context, req *googleapis_pubsub_v1.ModifyAckDeadlineRequest) error {
	ctx = metadata.NewContext(ctx, c.metadata)
	err := gax.Invoke(ctx, func(ctx context.Context) error {
		var err error
		_, err = c.client.ModifyAckDeadline(ctx, req)
		return err
	}, c.CallOptions.ModifyAckDeadline...)
	return err
}

// DeleteSubscription deletes an existing subscription. All pending messages in the subscription
// are immediately dropped. Calls to `Pull` after deletion will return
// `NOT_FOUND`. After a subscription is deleted, a new one may be created with
// the same name, but the new one has no association with the old
// subscription, or its topic unless the same topic is specified.
func (c *SubscriberClient) DeleteSubscription(ctx context.Context, req *pubsubpb.DeleteSubscriptionRequest) error {
	ctx = metadata.NewContext(ctx, c.metadata)
	err := gax.Invoke(ctx, func(ctx context.Context) error {
		var err error
		_, err = c.client.DeleteSubscription(ctx, req)
		return err
	}, c.CallOptions.DeleteSubscription...)
	return err
}

// DeleteLogMetric deletes a logs-based metric.
func (c *Client) DeleteLogMetric(ctx context.Context, req *google_logging_v2.DeleteLogMetricRequest) error {
	ctx = metadata.NewContext(ctx, c.metadata)
	err := gax.Invoke(ctx, func(ctx context.Context) error {
		var err error
		_, err = c.client.DeleteLogMetric(ctx, req)
		return err
	}, c.callOptions["DeleteLogMetric"]...)
	return err
}

// Acknowledge acknowledges the messages associated with the `ack_ids` in the
// `AcknowledgeRequest`. The Pub/Sub system can remove the relevant messages
// from the subscription.
//
// Acknowledging a message whose ack deadline has expired may succeed,
// but such a message may be redelivered later. Acknowledging a message more
// than once will not result in an error.
func (c *SubscriberClient) Acknowledge(ctx context.Context, req *pubsubpb.AcknowledgeRequest) error {
	ctx = metadata.NewContext(ctx, c.metadata)
	err := gax.Invoke(ctx, func(ctx context.Context) error {
		var err error
		_, err = c.client.Acknowledge(ctx, req)
		return err
	}, c.CallOptions.Acknowledge...)
	return err
}

// DeleteLog deletes a log and all its log entries.
// The log will reappear if it receives new entries.
func (c *Client) DeleteLog(ctx context.Context, req *loggingpb.DeleteLogRequest) error {
	ctx = metadata.NewContext(ctx, c.metadata)
	err := gax.Invoke(ctx, func(ctx context.Context) error {
		var err error
		_, err = c.client.DeleteLog(ctx, req)
		return err
	}, c.CallOptions.DeleteLog...)
	return err
}

// DeleteTopic deletes the topic with the given name. Returns `NOT_FOUND` if the topic
// does not exist. After a topic is deleted, a new topic may be created with
// the same name; this is an entirely new topic with none of the old
// configuration or subscriptions. Existing subscriptions to this topic are
// not deleted, but their `topic` field is set to `_deleted-topic_`.
func (c *PublisherClient) DeleteTopic(ctx context.Context, req *pubsubpb.DeleteTopicRequest) error {
	ctx = metadata.NewContext(ctx, c.metadata)
	err := gax.Invoke(ctx, func(ctx context.Context) error {
		var err error
		_, err = c.client.DeleteTopic(ctx, req)
		return err
	}, c.CallOptions.DeleteTopic...)
	return err
}

// ModifyPushConfig modifies the `PushConfig` for a specified subscription.
//
// This may be used to change a push subscription to a pull one (signified by
// an empty `PushConfig`) or vice versa, or change the endpoint URL and other
// attributes of a push subscription. Messages will accumulate for delivery
// continuously through the call regardless of changes to the `PushConfig`.
func (c *SubscriberClient) ModifyPushConfig(ctx context.Context, req *pubsubpb.ModifyPushConfigRequest) error {
	ctx = metadata.NewContext(ctx, c.metadata)
	err := gax.Invoke(ctx, func(ctx context.Context) error {
		var err error
		_, err = c.client.ModifyPushConfig(ctx, req)
		return err
	}, c.CallOptions.ModifyPushConfig...)
	return err
}

// DeleteBreakpoint deletes the breakpoint from the debuggee.
func (c *Debugger2Client) DeleteBreakpoint(ctx context.Context, req *clouddebuggerpb.DeleteBreakpointRequest) error {
	md, _ := metadata.FromContext(ctx)
	ctx = metadata.NewContext(ctx, metadata.Join(md, c.metadata))
	err := gax.Invoke(ctx, func(ctx context.Context) error {
		var err error
		_, err = c.debugger2Client.DeleteBreakpoint(ctx, req)
		return err
	}, c.CallOptions.DeleteBreakpoint...)
	return err
}

// ModifyAckDeadline modifies the ack deadline for a specific message. This method is useful
// to indicate that more time is needed to process a message by the
// subscriber, or to make the message available for redelivery if the
// processing was interrupted. Note that this does not modify the
// subscription-level `ackDeadlineSeconds` used for subsequent messages.
func (c *SubscriberClient) ModifyAckDeadline(ctx context.Context, req *pubsubpb.ModifyAckDeadlineRequest) error {
	md, _ := metadata.FromContext(ctx)
	ctx = metadata.NewContext(ctx, metadata.Join(md, c.metadata))
	err := gax.Invoke(ctx, func(ctx context.Context) error {
		var err error
		_, err = c.subscriberClient.ModifyAckDeadline(ctx, req)
		return err
	}, c.CallOptions.ModifyAckDeadline...)
	return err
}

// DeleteLogMetric deletes a logs-based metric.
func (c *MetricsClient) DeleteLogMetric(ctx context.Context, req *loggingpb.DeleteLogMetricRequest) error {
	md, _ := metadata.FromContext(ctx)
	ctx = metadata.NewContext(ctx, metadata.Join(md, c.metadata))
	err := gax.Invoke(ctx, func(ctx context.Context) error {
		var err error
		_, err = c.metricsClient.DeleteLogMetric(ctx, req)
		return err
	}, c.CallOptions.DeleteLogMetric...)
	return err
}

// DeleteServiceAccountKey deletes a [ServiceAccountKey][google.iam.admin.v1.ServiceAccountKey].
func (c *IamClient) DeleteServiceAccountKey(ctx context.Context, req *adminpb.DeleteServiceAccountKeyRequest) error {
	md, _ := metadata.FromContext(ctx)
	ctx = metadata.NewContext(ctx, metadata.Join(md, c.metadata))
	err := gax.Invoke(ctx, func(ctx context.Context) error {
		var err error
		_, err = c.iamClient.DeleteServiceAccountKey(ctx, req)
		return err
	}, c.CallOptions.DeleteServiceAccountKey...)
	return err
}

// 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) error {
	md, _ := metadata.FromContext(ctx)
	ctx = metadata.NewContext(ctx, metadata.Join(md, c.metadata))
	err := gax.Invoke(ctx, func(ctx context.Context) error {
		var err error
		_, err = c.metricClient.CreateTimeSeries(ctx, req)
		return err
	}, c.CallOptions.CreateTimeSeries...)
	return err
}

// PatchTraces sends new traces to Stackdriver Trace or updates existing traces. If the ID
// of a trace that you send matches that of an existing trace, any fields
// in the existing trace and its spans are overwritten by the provided values,
// and any new fields provided are merged with the existing trace data. If the
// ID does not match, a new trace is created.
func (c *Client) PatchTraces(ctx context.Context, req *cloudtracepb.PatchTracesRequest) error {
	md, _ := metadata.FromContext(ctx)
	ctx = metadata.NewContext(ctx, metadata.Join(md, c.metadata))
	err := gax.Invoke(ctx, func(ctx context.Context) error {
		var err error
		_, err = c.client.PatchTraces(ctx, req)
		return err
	}, c.CallOptions.PatchTraces...)
	return err
}

// WriteLogEntries writes log entries to Stackdriver Logging.  All log entries are
// written by this method.
func (c *Client) WriteLogEntries(ctx context.Context, req *loggingpb.WriteLogEntriesRequest) (*loggingpb.WriteLogEntriesResponse, error) {
	ctx = metadata.NewContext(ctx, c.metadata)
	var resp *loggingpb.WriteLogEntriesResponse
	err := gax.Invoke(ctx, func(ctx context.Context) error {
		var err error
		resp, err = c.client.WriteLogEntries(ctx, req)
		return err
	}, c.CallOptions.WriteLogEntries...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

// UpdateLogMetric creates or updates a logs-based metric.
func (c *MetricsClient) UpdateLogMetric(ctx context.Context, req *loggingpb.UpdateLogMetricRequest) (*loggingpb.LogMetric, error) {
	ctx = metadata.NewContext(ctx, c.metadata)
	var resp *loggingpb.LogMetric
	err := gax.Invoke(ctx, func(ctx context.Context) error {
		var err error
		resp, err = c.client.UpdateLogMetric(ctx, req)
		return err
	}, c.CallOptions.UpdateLogMetric...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

// GetSubscription gets the configuration details of a subscription.
func (c *SubscriberClient) GetSubscription(ctx context.Context, req *googleapis_pubsub_v1.GetSubscriptionRequest) (*googleapis_pubsub_v1.Subscription, error) {
	ctx = metadata.NewContext(ctx, c.metadata)
	var resp *googleapis_pubsub_v1.Subscription
	err := gax.Invoke(ctx, func(ctx context.Context) error {
		var err error
		resp, err = c.client.GetSubscription(ctx, req)
		return err
	}, c.CallOptions.GetSubscription...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

// UpdateLogMetric creates or updates a logs-based metric.
func (c *Client) UpdateLogMetric(ctx context.Context, req *google_logging_v2.UpdateLogMetricRequest) (*google_logging_v2.LogMetric, error) {
	ctx = metadata.NewContext(ctx, c.metadata)
	var resp *google_logging_v2.LogMetric
	err := gax.Invoke(ctx, func(ctx context.Context) error {
		var err error
		resp, err = c.client.UpdateLogMetric(ctx, req)
		return err
	}, c.callOptions["UpdateLogMetric"]...)
	if err != nil {
		return nil, err
	}
	return resp, nil
}