pubsub

package
Version: v1.13.0 Latest Latest
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Published: Jul 20, 2021 License: Apache-2.0 Imports: 22 Imported by: 70

Documentation

Overview

Package pubsub is an auto-generated package for the Cloud Pub/Sub API.

Provides reliable, many-to-many, asynchronous messaging between applications.

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 https://pkg.go.dev/cloud.google.com/go.

Index

Examples

Constants

This section is empty.

Variables

This section is empty.

Functions

func DefaultAuthScopes

func DefaultAuthScopes() []string

DefaultAuthScopes reports the default set of authentication scopes to use with this package.

func PublisherProjectPath deprecated

This function has been deprecated.
func PublisherProjectPath(project string) string

PublisherProjectPath returns the path for the project resource.

Deprecated: Use

fmt.Sprintf("projects/%s", project)

instead.

func PublisherTopicPath deprecated

This function has been deprecated.
func PublisherTopicPath(project, topic string) string

PublisherTopicPath returns the path for the topic resource.

Deprecated: Use

fmt.Sprintf("projects/%s/topics/%s", project, topic)

instead.

func SubscriberProjectPath deprecated

This function has been deprecated.
func SubscriberProjectPath(project string) string

SubscriberProjectPath returns the path for the project resource.

Deprecated: Use

fmt.Sprintf("projects/%s", project)

instead.

func SubscriberSnapshotPath deprecated

This function has been deprecated.
func SubscriberSnapshotPath(project, snapshot string) string

SubscriberSnapshotPath returns the path for the snapshot resource.

Deprecated: Use

fmt.Sprintf("projects/%s/snapshots/%s", project, snapshot)

instead.

func SubscriberSubscriptionPath deprecated

This function has been deprecated.
func SubscriberSubscriptionPath(project, subscription string) string

SubscriberSubscriptionPath returns the path for the subscription resource.

Deprecated: Use

fmt.Sprintf("projects/%s/subscriptions/%s", project, subscription)

instead.

func SubscriberTopicPath deprecated

This function has been deprecated.
func SubscriberTopicPath(project, topic string) string

SubscriberTopicPath returns the path for the topic resource.

Deprecated: Use

fmt.Sprintf("projects/%s/topics/%s", project, topic)

instead.

Types

type PublisherCallOptions

type PublisherCallOptions struct {
	CreateTopic            []gax.CallOption
	UpdateTopic            []gax.CallOption
	Publish                []gax.CallOption
	GetTopic               []gax.CallOption
	ListTopics             []gax.CallOption
	ListTopicSubscriptions []gax.CallOption
	ListTopicSnapshots     []gax.CallOption
	DeleteTopic            []gax.CallOption
	DetachSubscription     []gax.CallOption
	GetIamPolicy           []gax.CallOption
	SetIamPolicy           []gax.CallOption
	TestIamPermissions     []gax.CallOption
}

PublisherCallOptions contains the retry settings for each method of PublisherClient.

type PublisherClient

type PublisherClient struct {

	// The call options for this service.
	CallOptions *PublisherCallOptions
	// contains filtered or unexported fields
}

PublisherClient is a client for interacting with Cloud Pub/Sub API. Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.

The service that an application uses to manipulate topics, and to send messages to a topic.

func NewPublisherClient

func NewPublisherClient(ctx context.Context, opts ...option.ClientOption) (*PublisherClient, error)

NewPublisherClient creates a new publisher client based on gRPC. The returned client must be Closed when it is done being used to clean up its underlying connections.

The service that an application uses to manipulate topics, and to send messages to a topic.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewPublisherClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	// TODO: Use client.
	_ = c
}
Output:

func (*PublisherClient) Close

func (c *PublisherClient) Close() error

Close closes the connection to the API service. The user should invoke this when the client is no longer required.

func (*PublisherClient) Connection

func (c *PublisherClient) Connection() *grpc.ClientConn

Connection returns a connection to the API service.

Deprecated.

func (*PublisherClient) CreateTopic

func (c *PublisherClient) CreateTopic(ctx context.Context, req *pubsubpb.Topic, opts ...gax.CallOption) (*pubsubpb.Topic, error)

CreateTopic creates the given topic with the given name. See the [resource name rules] (https://cloud.google.com/pubsub/docs/admin#resource_names (at https://cloud.google.com/pubsub/docs/admin#resource_names)).

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewPublisherClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &pubsubpb.Topic{
		// TODO: Fill request struct fields.
	}
	resp, err := c.CreateTopic(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}
Output:

func (*PublisherClient) DeleteTopic

func (c *PublisherClient) DeleteTopic(ctx context.Context, req *pubsubpb.DeleteTopicRequest, opts ...gax.CallOption) error

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_.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewPublisherClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &pubsubpb.DeleteTopicRequest{
		// TODO: Fill request struct fields.
	}
	err = c.DeleteTopic(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
}
Output:

func (*PublisherClient) DetachSubscription

DetachSubscription detaches a subscription from this topic. All messages retained in the subscription are dropped. Subsequent Pull and StreamingPull requests will return FAILED_PRECONDITION. If the subscription is a push subscription, pushes to the endpoint will stop.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewPublisherClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &pubsubpb.DetachSubscriptionRequest{
		// TODO: Fill request struct fields.
	}
	resp, err := c.DetachSubscription(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}
Output:

func (*PublisherClient) GetIamPolicy

func (c *PublisherClient) GetIamPolicy(ctx context.Context, req *iampb.GetIamPolicyRequest, opts ...gax.CallOption) (*iampb.Policy, error)

GetIamPolicy gets the access control policy for a resource. Returns an empty policy if the resource exists and does not have a policy set.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	iampb "google.golang.org/genproto/googleapis/iam/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewPublisherClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &iampb.GetIamPolicyRequest{
		// TODO: Fill request struct fields.
	}
	resp, err := c.GetIamPolicy(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}
Output:

func (*PublisherClient) GetTopic

GetTopic gets the configuration of a topic.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewPublisherClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &pubsubpb.GetTopicRequest{
		// TODO: Fill request struct fields.
	}
	resp, err := c.GetTopic(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}
Output:

func (*PublisherClient) ListTopicSnapshots

ListTopicSnapshots lists the names of the snapshots on this topic. Snapshots are used in Seek (at https://cloud.google.com/pubsub/docs/replay-overview) operations, which allow you to manage message acknowledgments in bulk. That is, you can set the acknowledgment state of messages in an existing subscription to the state captured by a snapshot.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	"google.golang.org/api/iterator"
	pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewPublisherClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &pubsubpb.ListTopicSnapshotsRequest{
		// TODO: Fill request struct fields.
	}
	it := c.ListTopicSnapshots(ctx, req)
	for {
		resp, err := it.Next()
		if err == iterator.Done {
			break
		}
		if err != nil {
			// TODO: Handle error.
		}
		// TODO: Use resp.
		_ = resp
	}
}
Output:

func (*PublisherClient) ListTopicSubscriptions

func (c *PublisherClient) ListTopicSubscriptions(ctx context.Context, req *pubsubpb.ListTopicSubscriptionsRequest, opts ...gax.CallOption) *StringIterator

ListTopicSubscriptions lists the names of the attached subscriptions on this topic.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	"google.golang.org/api/iterator"
	pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewPublisherClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &pubsubpb.ListTopicSubscriptionsRequest{
		// TODO: Fill request struct fields.
	}
	it := c.ListTopicSubscriptions(ctx, req)
	for {
		resp, err := it.Next()
		if err == iterator.Done {
			break
		}
		if err != nil {
			// TODO: Handle error.
		}
		// TODO: Use resp.
		_ = resp
	}
}
Output:

func (*PublisherClient) ListTopics

ListTopics lists matching topics.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	"google.golang.org/api/iterator"
	pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewPublisherClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &pubsubpb.ListTopicsRequest{
		// TODO: Fill request struct fields.
	}
	it := c.ListTopics(ctx, req)
	for {
		resp, err := it.Next()
		if err == iterator.Done {
			break
		}
		if err != nil {
			// TODO: Handle error.
		}
		// TODO: Use resp.
		_ = resp
	}
}
Output:

func (*PublisherClient) Publish

Publish adds one or more messages to the topic. Returns NOT_FOUND if the topic does not exist.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewPublisherClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &pubsubpb.PublishRequest{
		// TODO: Fill request struct fields.
	}
	resp, err := c.Publish(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}
Output:

func (*PublisherClient) SetGoogleClientInfo

func (pc *PublisherClient) SetGoogleClientInfo(keyval ...string)

SetGoogleClientInfo sets the name and version of the application in the `x-goog-api-client` header passed on each request. Also passes any provided key-value pairs. Intended for use by Google-written clients.

Internal use only.

func (*PublisherClient) SetIamPolicy

func (c *PublisherClient) SetIamPolicy(ctx context.Context, req *iampb.SetIamPolicyRequest, opts ...gax.CallOption) (*iampb.Policy, error)

SetIamPolicy sets the access control policy on the specified resource. Replaces any existing policy.

Can return NOT_FOUND, INVALID_ARGUMENT, and PERMISSION_DENIED errors.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	iampb "google.golang.org/genproto/googleapis/iam/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewPublisherClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &iampb.SetIamPolicyRequest{
		// TODO: Fill request struct fields.
	}
	resp, err := c.SetIamPolicy(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}
Output:

func (*PublisherClient) SubscriptionIAM

func (c *PublisherClient) SubscriptionIAM(subscription *pubsubpb.Subscription) *iam.Handle

func (*PublisherClient) TestIamPermissions

TestIamPermissions returns permissions that a caller has on the specified resource. If the resource does not exist, this will return an empty set of permissions, not a NOT_FOUND error.

Note: This operation is designed to be used for building permission-aware UIs and command-line tools, not for authorization checking. This operation may “fail open” without warning.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	iampb "google.golang.org/genproto/googleapis/iam/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewPublisherClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &iampb.TestIamPermissionsRequest{
		// TODO: Fill request struct fields.
	}
	resp, err := c.TestIamPermissions(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}
Output:

func (*PublisherClient) TopicIAM

func (c *PublisherClient) TopicIAM(topic *pubsubpb.Topic) *iam.Handle

func (*PublisherClient) UpdateTopic

UpdateTopic updates an existing topic. Note that certain properties of a topic are not modifiable.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewPublisherClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &pubsubpb.UpdateTopicRequest{
		// TODO: Fill request struct fields.
	}
	resp, err := c.UpdateTopic(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}
Output:

type SchemaCallOptions

type SchemaCallOptions struct {
	CreateSchema       []gax.CallOption
	GetSchema          []gax.CallOption
	ListSchemas        []gax.CallOption
	DeleteSchema       []gax.CallOption
	ValidateSchema     []gax.CallOption
	ValidateMessage    []gax.CallOption
	GetIamPolicy       []gax.CallOption
	SetIamPolicy       []gax.CallOption
	TestIamPermissions []gax.CallOption
}

SchemaCallOptions contains the retry settings for each method of SchemaClient.

type SchemaClient

type SchemaClient struct {

	// The call options for this service.
	CallOptions *SchemaCallOptions
	// contains filtered or unexported fields
}

SchemaClient is a client for interacting with Cloud Pub/Sub API. Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.

Service for doing schema-related operations.

func NewSchemaClient

func NewSchemaClient(ctx context.Context, opts ...option.ClientOption) (*SchemaClient, error)

NewSchemaClient creates a new schema service client based on gRPC. The returned client must be Closed when it is done being used to clean up its underlying connections.

Service for doing schema-related operations.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewSchemaClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	// TODO: Use client.
	_ = c
}
Output:

func (*SchemaClient) Close

func (c *SchemaClient) Close() error

Close closes the connection to the API service. The user should invoke this when the client is no longer required.

func (*SchemaClient) Connection

func (c *SchemaClient) Connection() *grpc.ClientConn

Connection returns a connection to the API service.

Deprecated.

func (*SchemaClient) CreateSchema

func (c *SchemaClient) CreateSchema(ctx context.Context, req *pubsubpb.CreateSchemaRequest, opts ...gax.CallOption) (*pubsubpb.Schema, error)

CreateSchema creates a schema.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewSchemaClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &pubsubpb.CreateSchemaRequest{
		// TODO: Fill request struct fields.
	}
	resp, err := c.CreateSchema(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}
Output:

func (*SchemaClient) DeleteSchema

func (c *SchemaClient) DeleteSchema(ctx context.Context, req *pubsubpb.DeleteSchemaRequest, opts ...gax.CallOption) error

DeleteSchema deletes a schema.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewSchemaClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &pubsubpb.DeleteSchemaRequest{
		// TODO: Fill request struct fields.
	}
	err = c.DeleteSchema(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
}
Output:

func (*SchemaClient) GetIamPolicy

func (c *SchemaClient) GetIamPolicy(ctx context.Context, req *iampb.GetIamPolicyRequest, opts ...gax.CallOption) (*iampb.Policy, error)

GetIamPolicy gets the access control policy for a resource. Returns an empty policy if the resource exists and does not have a policy set.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	iampb "google.golang.org/genproto/googleapis/iam/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewSchemaClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &iampb.GetIamPolicyRequest{
		// TODO: Fill request struct fields.
	}
	resp, err := c.GetIamPolicy(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}
Output:

func (*SchemaClient) GetSchema

func (c *SchemaClient) GetSchema(ctx context.Context, req *pubsubpb.GetSchemaRequest, opts ...gax.CallOption) (*pubsubpb.Schema, error)

GetSchema gets a schema.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewSchemaClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &pubsubpb.GetSchemaRequest{
		// TODO: Fill request struct fields.
	}
	resp, err := c.GetSchema(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}
Output:

func (*SchemaClient) ListSchemas

ListSchemas lists schemas in a project.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	"google.golang.org/api/iterator"
	pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewSchemaClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &pubsubpb.ListSchemasRequest{
		// TODO: Fill request struct fields.
	}
	it := c.ListSchemas(ctx, req)
	for {
		resp, err := it.Next()
		if err == iterator.Done {
			break
		}
		if err != nil {
			// TODO: Handle error.
		}
		// TODO: Use resp.
		_ = resp
	}
}
Output:

func (*SchemaClient) SetIamPolicy

func (c *SchemaClient) SetIamPolicy(ctx context.Context, req *iampb.SetIamPolicyRequest, opts ...gax.CallOption) (*iampb.Policy, error)

SetIamPolicy sets the access control policy on the specified resource. Replaces any existing policy.

Can return NOT_FOUND, INVALID_ARGUMENT, and PERMISSION_DENIED errors.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	iampb "google.golang.org/genproto/googleapis/iam/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewSchemaClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &iampb.SetIamPolicyRequest{
		// TODO: Fill request struct fields.
	}
	resp, err := c.SetIamPolicy(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}
Output:

func (*SchemaClient) TestIamPermissions

TestIamPermissions returns permissions that a caller has on the specified resource. If the resource does not exist, this will return an empty set of permissions, not a NOT_FOUND error.

Note: This operation is designed to be used for building permission-aware UIs and command-line tools, not for authorization checking. This operation may “fail open” without warning.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	iampb "google.golang.org/genproto/googleapis/iam/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewSchemaClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &iampb.TestIamPermissionsRequest{
		// TODO: Fill request struct fields.
	}
	resp, err := c.TestIamPermissions(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}
Output:

func (*SchemaClient) ValidateMessage

ValidateMessage validates a message against a schema.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewSchemaClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &pubsubpb.ValidateMessageRequest{
		// TODO: Fill request struct fields.
	}
	resp, err := c.ValidateMessage(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}
Output:

func (*SchemaClient) ValidateSchema

ValidateSchema validates a schema.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewSchemaClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &pubsubpb.ValidateSchemaRequest{
		// TODO: Fill request struct fields.
	}
	resp, err := c.ValidateSchema(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}
Output:

type SchemaIterator

type SchemaIterator struct {

	// 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 []*pubsubpb.Schema, nextPageToken string, err error)
	// contains filtered or unexported fields
}

SchemaIterator manages a stream of *pubsubpb.Schema.

func (*SchemaIterator) Next

func (it *SchemaIterator) Next() (*pubsubpb.Schema, error)

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 (*SchemaIterator) PageInfo

func (it *SchemaIterator) PageInfo() *iterator.PageInfo

PageInfo supports pagination. See the google.golang.org/api/iterator package for details.

type SnapshotIterator

type SnapshotIterator struct {

	// 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 []*pubsubpb.Snapshot, nextPageToken string, err error)
	// contains filtered or unexported fields
}

SnapshotIterator manages a stream of *pubsubpb.Snapshot.

func (*SnapshotIterator) Next

func (it *SnapshotIterator) Next() (*pubsubpb.Snapshot, error)

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 (*SnapshotIterator) PageInfo

func (it *SnapshotIterator) PageInfo() *iterator.PageInfo

PageInfo supports pagination. See the google.golang.org/api/iterator package for details.

type StringIterator

type StringIterator struct {

	// 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 []string, nextPageToken string, err error)
	// contains filtered or unexported fields
}

StringIterator manages a stream of string.

func (*StringIterator) Next

func (it *StringIterator) Next() (string, error)

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 (*StringIterator) PageInfo

func (it *StringIterator) PageInfo() *iterator.PageInfo

PageInfo supports pagination. See the google.golang.org/api/iterator package for details.

type SubscriberCallOptions

type SubscriberCallOptions struct {
	CreateSubscription []gax.CallOption
	GetSubscription    []gax.CallOption
	UpdateSubscription []gax.CallOption
	ListSubscriptions  []gax.CallOption
	DeleteSubscription []gax.CallOption
	ModifyAckDeadline  []gax.CallOption
	Acknowledge        []gax.CallOption
	Pull               []gax.CallOption
	StreamingPull      []gax.CallOption
	ModifyPushConfig   []gax.CallOption
	GetSnapshot        []gax.CallOption
	ListSnapshots      []gax.CallOption
	CreateSnapshot     []gax.CallOption
	UpdateSnapshot     []gax.CallOption
	DeleteSnapshot     []gax.CallOption
	Seek               []gax.CallOption
	GetIamPolicy       []gax.CallOption
	SetIamPolicy       []gax.CallOption
	TestIamPermissions []gax.CallOption
}

SubscriberCallOptions contains the retry settings for each method of SubscriberClient.

type SubscriberClient

type SubscriberClient struct {

	// The call options for this service.
	CallOptions *SubscriberCallOptions
	// contains filtered or unexported fields
}

SubscriberClient is a client for interacting with Cloud Pub/Sub API. Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.

The service that an application uses to manipulate subscriptions and to consume messages from a subscription via the Pull method or by establishing a bi-directional stream using the StreamingPull method.

func NewSubscriberClient

func NewSubscriberClient(ctx context.Context, opts ...option.ClientOption) (*SubscriberClient, error)

NewSubscriberClient creates a new subscriber client based on gRPC. The returned client must be Closed when it is done being used to clean up its underlying connections.

The service that an application uses to manipulate subscriptions and to consume messages from a subscription via the Pull method or by establishing a bi-directional stream using the StreamingPull method.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewSubscriberClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	// TODO: Use client.
	_ = c
}
Output:

func (*SubscriberClient) Acknowledge

func (c *SubscriberClient) Acknowledge(ctx context.Context, req *pubsubpb.AcknowledgeRequest, opts ...gax.CallOption) error

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.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewSubscriberClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &pubsubpb.AcknowledgeRequest{
		// TODO: Fill request struct fields.
	}
	err = c.Acknowledge(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
}
Output:

func (*SubscriberClient) Close

func (c *SubscriberClient) Close() error

Close closes the connection to the API service. The user should invoke this when the client is no longer required.

func (*SubscriberClient) Connection

func (c *SubscriberClient) Connection() *grpc.ClientConn

Connection returns a connection to the API service.

Deprecated.

func (*SubscriberClient) CreateSnapshot

CreateSnapshot creates a snapshot from the requested subscription. Snapshots are used in Seek (at https://cloud.google.com/pubsub/docs/replay-overview) operations, which allow you to manage message acknowledgments in bulk. That is, you can set the acknowledgment state of messages in an existing subscription to the state captured by a snapshot. If the snapshot already exists, returns ALREADY_EXISTS. If the requested subscription doesn’t exist, returns NOT_FOUND. If the backlog in the subscription is too old – and the resulting snapshot would expire in less than 1 hour – then FAILED_PRECONDITION is returned. See also the Snapshot.expire_time field. If the name is not provided in the request, the server will assign a random name for this snapshot on the same project as the subscription, conforming to the [resource name format] (https://cloud.google.com/pubsub/docs/admin#resource_names (at https://cloud.google.com/pubsub/docs/admin#resource_names)). The generated name is populated in the returned Snapshot object. Note that for REST API requests, you must specify a name in the request.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewSubscriberClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &pubsubpb.CreateSnapshotRequest{
		// TODO: Fill request struct fields.
	}
	resp, err := c.CreateSnapshot(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}
Output:

func (*SubscriberClient) CreateSubscription

func (c *SubscriberClient) CreateSubscription(ctx context.Context, req *pubsubpb.Subscription, opts ...gax.CallOption) (*pubsubpb.Subscription, error)

CreateSubscription creates a subscription to a given topic. See the [resource name rules] (https://cloud.google.com/pubsub/docs/admin#resource_names (at https://cloud.google.com/pubsub/docs/admin#resource_names)). If the subscription already exists, returns ALREADY_EXISTS. If the corresponding topic doesn’t exist, returns NOT_FOUND.

If the name is not provided in the request, the server will assign a random name for this subscription on the same project as the topic, conforming to the [resource name format] (https://cloud.google.com/pubsub/docs/admin#resource_names (at https://cloud.google.com/pubsub/docs/admin#resource_names)). The generated name is populated in the returned Subscription object. Note that for REST API requests, you must specify a name in the request.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewSubscriberClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &pubsubpb.Subscription{
		// TODO: Fill request struct fields.
	}
	resp, err := c.CreateSubscription(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}
Output:

func (*SubscriberClient) DeleteSnapshot

func (c *SubscriberClient) DeleteSnapshot(ctx context.Context, req *pubsubpb.DeleteSnapshotRequest, opts ...gax.CallOption) error

DeleteSnapshot removes an existing snapshot. Snapshots are used in [Seek] (https://cloud.google.com/pubsub/docs/replay-overview (at https://cloud.google.com/pubsub/docs/replay-overview)) operations, which allow you to manage message acknowledgments in bulk. That is, you can set the acknowledgment state of messages in an existing subscription to the state captured by a snapshot. When the snapshot is deleted, all messages retained in the snapshot are immediately dropped. After a snapshot is deleted, a new one may be created with the same name, but the new one has no association with the old snapshot or its subscription, unless the same subscription is specified.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewSubscriberClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &pubsubpb.DeleteSnapshotRequest{
		// TODO: Fill request struct fields.
	}
	err = c.DeleteSnapshot(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
}
Output:

func (*SubscriberClient) DeleteSubscription

func (c *SubscriberClient) DeleteSubscription(ctx context.Context, req *pubsubpb.DeleteSubscriptionRequest, opts ...gax.CallOption) error

DeleteSubscription deletes an existing subscription. All messages retained 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.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewSubscriberClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &pubsubpb.DeleteSubscriptionRequest{
		// TODO: Fill request struct fields.
	}
	err = c.DeleteSubscription(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
}
Output:

func (*SubscriberClient) GetIamPolicy

func (c *SubscriberClient) GetIamPolicy(ctx context.Context, req *iampb.GetIamPolicyRequest, opts ...gax.CallOption) (*iampb.Policy, error)

GetIamPolicy gets the access control policy for a resource. Returns an empty policy if the resource exists and does not have a policy set.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	iampb "google.golang.org/genproto/googleapis/iam/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewSubscriberClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &iampb.GetIamPolicyRequest{
		// TODO: Fill request struct fields.
	}
	resp, err := c.GetIamPolicy(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}
Output:

func (*SubscriberClient) GetSnapshot

GetSnapshot gets the configuration details of a snapshot. Snapshots are used in Seek (at https://cloud.google.com/pubsub/docs/replay-overview) operations, which allow you to manage message acknowledgments in bulk. That is, you can set the acknowledgment state of messages in an existing subscription to the state captured by a snapshot.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewSubscriberClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &pubsubpb.GetSnapshotRequest{
		// TODO: Fill request struct fields.
	}
	resp, err := c.GetSnapshot(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}
Output:

func (*SubscriberClient) GetSubscription

GetSubscription gets the configuration details of a subscription.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewSubscriberClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &pubsubpb.GetSubscriptionRequest{
		// TODO: Fill request struct fields.
	}
	resp, err := c.GetSubscription(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}
Output:

func (*SubscriberClient) ListSnapshots

ListSnapshots lists the existing snapshots. Snapshots are used in Seek (at https://cloud.google.com/pubsub/docs/replay-overview) operations, which allow you to manage message acknowledgments in bulk. That is, you can set the acknowledgment state of messages in an existing subscription to the state captured by a snapshot.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	"google.golang.org/api/iterator"
	pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewSubscriberClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &pubsubpb.ListSnapshotsRequest{
		// TODO: Fill request struct fields.
	}
	it := c.ListSnapshots(ctx, req)
	for {
		resp, err := it.Next()
		if err == iterator.Done {
			break
		}
		if err != nil {
			// TODO: Handle error.
		}
		// TODO: Use resp.
		_ = resp
	}
}
Output:

func (*SubscriberClient) ListSubscriptions

ListSubscriptions lists matching subscriptions.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	"google.golang.org/api/iterator"
	pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewSubscriberClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &pubsubpb.ListSubscriptionsRequest{
		// TODO: Fill request struct fields.
	}
	it := c.ListSubscriptions(ctx, req)
	for {
		resp, err := it.Next()
		if err == iterator.Done {
			break
		}
		if err != nil {
			// TODO: Handle error.
		}
		// TODO: Use resp.
		_ = resp
	}
}
Output:

func (*SubscriberClient) ModifyAckDeadline

func (c *SubscriberClient) ModifyAckDeadline(ctx context.Context, req *pubsubpb.ModifyAckDeadlineRequest, opts ...gax.CallOption) error

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.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewSubscriberClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &pubsubpb.ModifyAckDeadlineRequest{
		// TODO: Fill request struct fields.
	}
	err = c.ModifyAckDeadline(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
}
Output:

func (*SubscriberClient) ModifyPushConfig

func (c *SubscriberClient) ModifyPushConfig(ctx context.Context, req *pubsubpb.ModifyPushConfigRequest, opts ...gax.CallOption) error

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.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewSubscriberClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &pubsubpb.ModifyPushConfigRequest{
		// TODO: Fill request struct fields.
	}
	err = c.ModifyPushConfig(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
}
Output:

func (*SubscriberClient) Pull

Pull pulls messages from the server. The server may return UNAVAILABLE if there are too many concurrent pull requests pending for the given subscription.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewSubscriberClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &pubsubpb.PullRequest{
		// TODO: Fill request struct fields.
	}
	resp, err := c.Pull(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}
Output:

Example (LengthyClientProcessing)
package main

import (
	"context"
	"fmt"
	"log"
	"time"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
)

func main() {
	projectID := "some-project"
	subscriptionID := "some-subscription"

	ctx := context.Background()
	client, err := pubsub.NewSubscriberClient(ctx)
	if err != nil {
		log.Fatal(err)
	}
	defer client.Close()

	sub := fmt.Sprintf("projects/%s/subscriptions/%s", projectID, subscriptionID)
	// Be sure to tune the MaxMessages parameter per your project's needs, and accordingly
	// adjust the ack behavior below to batch acknowledgements.
	req := pubsubpb.PullRequest{
		Subscription: sub,
		MaxMessages:  1,
	}

	fmt.Println("Listening..")

	for {
		res, err := client.Pull(ctx, &req)
		if err != nil {
			log.Fatal(err)
		}

		// client.Pull returns an empty list if there are no messages available in the
		// backlog. We should skip processing steps when that happens.
		if len(res.ReceivedMessages) == 0 {
			continue
		}

		var recvdAckIDs []string
		for _, m := range res.ReceivedMessages {
			recvdAckIDs = append(recvdAckIDs, m.AckId)
		}

		var done = make(chan struct{})
		var delay = 0 * time.Second // Tick immediately upon reception
		var ackDeadline = 10 * time.Second

		// Continuously notify the server that processing is still happening on this batch.
		go func() {
			for {
				select {
				case <-ctx.Done():
					return
				case <-done:
					return
				case <-time.After(delay):
					err := client.ModifyAckDeadline(ctx, &pubsubpb.ModifyAckDeadlineRequest{
						Subscription:       sub,
						AckIds:             recvdAckIDs,
						AckDeadlineSeconds: int32(ackDeadline.Seconds()),
					})
					if err != nil {
						log.Fatal(err)
					}
					delay = ackDeadline - 5*time.Second // 5 seconds grace period.
				}
			}
		}()

		for _, m := range res.ReceivedMessages {
			// Process the message here, possibly in a goroutine.
			log.Printf("Got message: %s", string(m.Message.Data))

			err := client.Acknowledge(ctx, &pubsubpb.AcknowledgeRequest{
				Subscription: sub,
				AckIds:       []string{m.AckId},
			})
			if err != nil {
				log.Fatal(err)
			}
		}

		close(done)
	}
}
Output:

func (*SubscriberClient) Seek

Seek seeks an existing subscription to a point in time or to a given snapshot, whichever is provided in the request. Snapshots are used in [Seek] (https://cloud.google.com/pubsub/docs/replay-overview (at https://cloud.google.com/pubsub/docs/replay-overview)) operations, which allow you to manage message acknowledgments in bulk. That is, you can set the acknowledgment state of messages in an existing subscription to the state captured by a snapshot. Note that both the subscription and the snapshot must be on the same topic.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewSubscriberClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &pubsubpb.SeekRequest{
		// TODO: Fill request struct fields.
	}
	resp, err := c.Seek(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}
Output:

func (*SubscriberClient) SetGoogleClientInfo

func (sc *SubscriberClient) SetGoogleClientInfo(keyval ...string)

SetGoogleClientInfo sets the name and version of the application in the `x-goog-api-client` header passed on each request. Also passes any provided key-value pairs. Intended for use by Google-written clients.

Internal use only.

func (*SubscriberClient) SetIamPolicy

func (c *SubscriberClient) SetIamPolicy(ctx context.Context, req *iampb.SetIamPolicyRequest, opts ...gax.CallOption) (*iampb.Policy, error)

SetIamPolicy sets the access control policy on the specified resource. Replaces any existing policy.

Can return NOT_FOUND, INVALID_ARGUMENT, and PERMISSION_DENIED errors.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	iampb "google.golang.org/genproto/googleapis/iam/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewSubscriberClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &iampb.SetIamPolicyRequest{
		// TODO: Fill request struct fields.
	}
	resp, err := c.SetIamPolicy(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}
Output:

func (*SubscriberClient) StreamingPull

StreamingPull establishes a stream with the server, which sends messages down to the client. The client streams acknowledgements and ack deadline modifications back to the server. The server will close the stream and return the status on any error. The server may close the stream with status UNAVAILABLE to reassign server-side resources, in which case, the client should re-establish the stream. Flow control can be achieved by configuring the underlying RPC channel.

Example
package main

import (
	"context"
	"io"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewSubscriberClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()
	stream, err := c.StreamingPull(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	go func() {
		reqs := []*pubsubpb.StreamingPullRequest{
			// TODO: Create requests.
		}
		for _, req := range reqs {
			if err := stream.Send(req); err != nil {
				// TODO: Handle error.
			}
		}
		stream.CloseSend()
	}()
	for {
		resp, err := stream.Recv()
		if err == io.EOF {
			break
		}
		if err != nil {
			// TODO: handle error.
		}
		// TODO: Use resp.
		_ = resp
	}
}
Output:

func (*SubscriberClient) SubscriptionIAM

func (c *SubscriberClient) SubscriptionIAM(subscription *pubsubpb.Subscription) *iam.Handle

func (*SubscriberClient) TestIamPermissions

TestIamPermissions returns permissions that a caller has on the specified resource. If the resource does not exist, this will return an empty set of permissions, not a NOT_FOUND error.

Note: This operation is designed to be used for building permission-aware UIs and command-line tools, not for authorization checking. This operation may “fail open” without warning.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	iampb "google.golang.org/genproto/googleapis/iam/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewSubscriberClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &iampb.TestIamPermissionsRequest{
		// TODO: Fill request struct fields.
	}
	resp, err := c.TestIamPermissions(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}
Output:

func (*SubscriberClient) TopicIAM

func (c *SubscriberClient) TopicIAM(topic *pubsubpb.Topic) *iam.Handle

func (*SubscriberClient) UpdateSnapshot

UpdateSnapshot updates an existing snapshot. Snapshots are used in Seek (at https://cloud.google.com/pubsub/docs/replay-overview) operations, which allow you to manage message acknowledgments in bulk. That is, you can set the acknowledgment state of messages in an existing subscription to the state captured by a snapshot.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewSubscriberClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &pubsubpb.UpdateSnapshotRequest{
		// TODO: Fill request struct fields.
	}
	resp, err := c.UpdateSnapshot(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}
Output:

func (*SubscriberClient) UpdateSubscription

UpdateSubscription updates an existing subscription. Note that certain properties of a subscription, such as its topic, are not modifiable.

Example
package main

import (
	"context"

	pubsub "cloud.google.com/go/pubsub/apiv1"
	pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
)

func main() {
	ctx := context.Background()
	c, err := pubsub.NewSubscriberClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &pubsubpb.UpdateSubscriptionRequest{
		// TODO: Fill request struct fields.
	}
	resp, err := c.UpdateSubscription(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}
Output:

type SubscriptionIterator

type SubscriptionIterator struct {

	// 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 []*pubsubpb.Subscription, nextPageToken string, err error)
	// contains filtered or unexported fields
}

SubscriptionIterator manages a stream of *pubsubpb.Subscription.

func (*SubscriptionIterator) Next

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 (*SubscriptionIterator) PageInfo

func (it *SubscriptionIterator) PageInfo() *iterator.PageInfo

PageInfo supports pagination. See the google.golang.org/api/iterator package for details.

type TopicIterator

type TopicIterator struct {

	// 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 []*pubsubpb.Topic, nextPageToken string, err error)
	// contains filtered or unexported fields
}

TopicIterator manages a stream of *pubsubpb.Topic.

func (*TopicIterator) Next

func (it *TopicIterator) Next() (*pubsubpb.Topic, error)

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 (*TopicIterator) PageInfo

func (it *TopicIterator) PageInfo() *iterator.PageInfo

PageInfo supports pagination. See the google.golang.org/api/iterator package for details.

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