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publisher_client.go
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publisher_client.go
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// Copyright 2023 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 pubsublite
import (
"context"
"fmt"
"math"
"net/url"
"time"
longrunningpb "cloud.google.com/go/longrunning/autogen/longrunningpb"
pubsublitepb "cloud.google.com/go/pubsublite/apiv1/pubsublitepb"
gax "github.com/googleapis/gax-go/v2"
"google.golang.org/api/iterator"
"google.golang.org/api/option"
"google.golang.org/api/option/internaloption"
gtransport "google.golang.org/api/transport/grpc"
"google.golang.org/grpc"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/metadata"
"google.golang.org/protobuf/proto"
)
var newPublisherClientHook clientHook
// PublisherCallOptions contains the retry settings for each method of PublisherClient.
type PublisherCallOptions struct {
Publish []gax.CallOption
CancelOperation []gax.CallOption
DeleteOperation []gax.CallOption
GetOperation []gax.CallOption
ListOperations []gax.CallOption
}
func defaultPublisherGRPCClientOptions() []option.ClientOption {
return []option.ClientOption{
internaloption.WithDefaultEndpoint("pubsublite.googleapis.com:443"),
internaloption.WithDefaultMTLSEndpoint("pubsublite.mtls.googleapis.com:443"),
internaloption.WithDefaultAudience("https://pubsublite.googleapis.com/"),
internaloption.WithDefaultScopes(DefaultAuthScopes()...),
internaloption.EnableJwtWithScope(),
option.WithGRPCDialOption(grpc.WithDefaultCallOptions(
grpc.MaxCallRecvMsgSize(math.MaxInt32))),
}
}
func defaultPublisherCallOptions() *PublisherCallOptions {
return &PublisherCallOptions{
Publish: []gax.CallOption{},
CancelOperation: []gax.CallOption{},
DeleteOperation: []gax.CallOption{},
GetOperation: []gax.CallOption{
gax.WithRetry(func() gax.Retryer {
return gax.OnCodes([]codes.Code{
codes.DeadlineExceeded,
codes.Unavailable,
codes.Aborted,
codes.Internal,
codes.Unknown,
}, gax.Backoff{
Initial: 100 * time.Millisecond,
Max: 60000 * time.Millisecond,
Multiplier: 1.30,
})
}),
},
ListOperations: []gax.CallOption{
gax.WithRetry(func() gax.Retryer {
return gax.OnCodes([]codes.Code{
codes.DeadlineExceeded,
codes.Unavailable,
codes.Aborted,
codes.Internal,
codes.Unknown,
}, gax.Backoff{
Initial: 100 * time.Millisecond,
Max: 60000 * time.Millisecond,
Multiplier: 1.30,
})
}),
},
}
}
// internalPublisherClient is an interface that defines the methods available from Pub/Sub Lite API.
type internalPublisherClient interface {
Close() error
setGoogleClientInfo(...string)
Connection() *grpc.ClientConn
Publish(context.Context, ...gax.CallOption) (pubsublitepb.PublisherService_PublishClient, error)
CancelOperation(context.Context, *longrunningpb.CancelOperationRequest, ...gax.CallOption) error
DeleteOperation(context.Context, *longrunningpb.DeleteOperationRequest, ...gax.CallOption) error
GetOperation(context.Context, *longrunningpb.GetOperationRequest, ...gax.CallOption) (*longrunningpb.Operation, error)
ListOperations(context.Context, *longrunningpb.ListOperationsRequest, ...gax.CallOption) *OperationIterator
}
// PublisherClient is a client for interacting with Pub/Sub Lite API.
// Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
//
// The service that a publisher client application uses to publish messages to
// topics. Published messages are retained by the service for the duration of
// the retention period configured for the respective topic, and are delivered
// to subscriber clients upon request (via the SubscriberService).
type PublisherClient struct {
// The internal transport-dependent client.
internalClient internalPublisherClient
// The call options for this service.
CallOptions *PublisherCallOptions
}
// Wrapper methods routed to the internal client.
// Close closes the connection to the API service. The user should invoke this when
// the client is no longer required.
func (c *PublisherClient) Close() error {
return c.internalClient.Close()
}
// setGoogleClientInfo sets the name and version of the application in
// the `x-goog-api-client` header passed on each request. Intended for
// use by Google-written clients.
func (c *PublisherClient) setGoogleClientInfo(keyval ...string) {
c.internalClient.setGoogleClientInfo(keyval...)
}
// Connection returns a connection to the API service.
//
// Deprecated: Connections are now pooled so this method does not always
// return the same resource.
func (c *PublisherClient) Connection() *grpc.ClientConn {
return c.internalClient.Connection()
}
// Publish establishes a stream with the server for publishing messages. Once the
// stream is initialized, the client publishes messages by sending publish
// requests on the stream. The server responds with a PublishResponse for each
// PublishRequest sent by the client, in the same order that the requests
// were sent. Note that multiple PublishRequests can be in flight
// simultaneously, but they will be processed by the server in the order that
// they are sent by the client on a given stream.
func (c *PublisherClient) Publish(ctx context.Context, opts ...gax.CallOption) (pubsublitepb.PublisherService_PublishClient, error) {
return c.internalClient.Publish(ctx, opts...)
}
// CancelOperation is a utility method from google.longrunning.Operations.
func (c *PublisherClient) CancelOperation(ctx context.Context, req *longrunningpb.CancelOperationRequest, opts ...gax.CallOption) error {
return c.internalClient.CancelOperation(ctx, req, opts...)
}
// DeleteOperation is a utility method from google.longrunning.Operations.
func (c *PublisherClient) DeleteOperation(ctx context.Context, req *longrunningpb.DeleteOperationRequest, opts ...gax.CallOption) error {
return c.internalClient.DeleteOperation(ctx, req, opts...)
}
// GetOperation is a utility method from google.longrunning.Operations.
func (c *PublisherClient) GetOperation(ctx context.Context, req *longrunningpb.GetOperationRequest, opts ...gax.CallOption) (*longrunningpb.Operation, error) {
return c.internalClient.GetOperation(ctx, req, opts...)
}
// ListOperations is a utility method from google.longrunning.Operations.
func (c *PublisherClient) ListOperations(ctx context.Context, req *longrunningpb.ListOperationsRequest, opts ...gax.CallOption) *OperationIterator {
return c.internalClient.ListOperations(ctx, req, opts...)
}
// publisherGRPCClient is a client for interacting with Pub/Sub Lite API over gRPC transport.
//
// Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
type publisherGRPCClient struct {
// Connection pool of gRPC connections to the service.
connPool gtransport.ConnPool
// flag to opt out of default deadlines via GOOGLE_API_GO_EXPERIMENTAL_DISABLE_DEFAULT_DEADLINE
disableDeadlines bool
// Points back to the CallOptions field of the containing PublisherClient
CallOptions **PublisherCallOptions
// The gRPC API client.
publisherClient pubsublitepb.PublisherServiceClient
operationsClient longrunningpb.OperationsClient
// The x-goog-* metadata to be sent with each request.
xGoogMetadata metadata.MD
}
// NewPublisherClient creates a new publisher service 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 a publisher client application uses to publish messages to
// topics. Published messages are retained by the service for the duration of
// the retention period configured for the respective topic, and are delivered
// to subscriber clients upon request (via the SubscriberService).
func NewPublisherClient(ctx context.Context, opts ...option.ClientOption) (*PublisherClient, error) {
clientOpts := defaultPublisherGRPCClientOptions()
if newPublisherClientHook != nil {
hookOpts, err := newPublisherClientHook(ctx, clientHookParams{})
if err != nil {
return nil, err
}
clientOpts = append(clientOpts, hookOpts...)
}
disableDeadlines, err := checkDisableDeadlines()
if err != nil {
return nil, err
}
connPool, err := gtransport.DialPool(ctx, append(clientOpts, opts...)...)
if err != nil {
return nil, err
}
client := PublisherClient{CallOptions: defaultPublisherCallOptions()}
c := &publisherGRPCClient{
connPool: connPool,
disableDeadlines: disableDeadlines,
publisherClient: pubsublitepb.NewPublisherServiceClient(connPool),
CallOptions: &client.CallOptions,
operationsClient: longrunningpb.NewOperationsClient(connPool),
}
c.setGoogleClientInfo()
client.internalClient = c
return &client, nil
}
// Connection returns a connection to the API service.
//
// Deprecated: Connections are now pooled so this method does not always
// return the same resource.
func (c *publisherGRPCClient) Connection() *grpc.ClientConn {
return c.connPool.Conn()
}
// setGoogleClientInfo sets the name and version of the application in
// the `x-goog-api-client` header passed on each request. Intended for
// use by Google-written clients.
func (c *publisherGRPCClient) setGoogleClientInfo(keyval ...string) {
kv := append([]string{"gl-go", versionGo()}, keyval...)
kv = append(kv, "gapic", getVersionClient(), "gax", gax.Version, "grpc", grpc.Version)
c.xGoogMetadata = metadata.Pairs("x-goog-api-client", gax.XGoogHeader(kv...))
}
// Close closes the connection to the API service. The user should invoke this when
// the client is no longer required.
func (c *publisherGRPCClient) Close() error {
return c.connPool.Close()
}
func (c *publisherGRPCClient) Publish(ctx context.Context, opts ...gax.CallOption) (pubsublitepb.PublisherService_PublishClient, error) {
ctx = insertMetadata(ctx, c.xGoogMetadata)
var resp pubsublitepb.PublisherService_PublishClient
opts = append((*c.CallOptions).Publish[0:len((*c.CallOptions).Publish):len((*c.CallOptions).Publish)], opts...)
err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
var err error
resp, err = c.publisherClient.Publish(ctx, settings.GRPC...)
return err
}, opts...)
if err != nil {
return nil, err
}
return resp, nil
}
func (c *publisherGRPCClient) CancelOperation(ctx context.Context, req *longrunningpb.CancelOperationRequest, 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).CancelOperation[0:len((*c.CallOptions).CancelOperation):len((*c.CallOptions).CancelOperation)], opts...)
err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
var err error
_, err = c.operationsClient.CancelOperation(ctx, req, settings.GRPC...)
return err
}, opts...)
return err
}
func (c *publisherGRPCClient) DeleteOperation(ctx context.Context, req *longrunningpb.DeleteOperationRequest, 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).DeleteOperation[0:len((*c.CallOptions).DeleteOperation):len((*c.CallOptions).DeleteOperation)], opts...)
err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
var err error
_, err = c.operationsClient.DeleteOperation(ctx, req, settings.GRPC...)
return err
}, opts...)
return err
}
func (c *publisherGRPCClient) GetOperation(ctx context.Context, req *longrunningpb.GetOperationRequest, opts ...gax.CallOption) (*longrunningpb.Operation, error) {
if _, ok := ctx.Deadline(); !ok && !c.disableDeadlines {
cctx, cancel := context.WithTimeout(ctx, 600000*time.Millisecond)
defer cancel()
ctx = cctx
}
md := metadata.Pairs("x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName())))
ctx = insertMetadata(ctx, c.xGoogMetadata, md)
opts = append((*c.CallOptions).GetOperation[0:len((*c.CallOptions).GetOperation):len((*c.CallOptions).GetOperation)], opts...)
var resp *longrunningpb.Operation
err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
var err error
resp, err = c.operationsClient.GetOperation(ctx, req, settings.GRPC...)
return err
}, opts...)
if err != nil {
return nil, err
}
return resp, nil
}
func (c *publisherGRPCClient) ListOperations(ctx context.Context, req *longrunningpb.ListOperationsRequest, opts ...gax.CallOption) *OperationIterator {
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).ListOperations[0:len((*c.CallOptions).ListOperations):len((*c.CallOptions).ListOperations)], opts...)
it := &OperationIterator{}
req = proto.Clone(req).(*longrunningpb.ListOperationsRequest)
it.InternalFetch = func(pageSize int, pageToken string) ([]*longrunningpb.Operation, string, error) {
resp := &longrunningpb.ListOperationsResponse{}
if pageToken != "" {
req.PageToken = pageToken
}
if pageSize > math.MaxInt32 {
req.PageSize = math.MaxInt32
} else if pageSize != 0 {
req.PageSize = int32(pageSize)
}
err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
var err error
resp, err = c.operationsClient.ListOperations(ctx, req, settings.GRPC...)
return err
}, opts...)
if err != nil {
return nil, "", err
}
it.Response = resp
return resp.GetOperations(), resp.GetNextPageToken(), nil
}
fetch := func(pageSize int, pageToken string) (string, error) {
items, nextPageToken, err := it.InternalFetch(pageSize, pageToken)
if err != nil {
return "", err
}
it.items = append(it.items, items...)
return nextPageToken, nil
}
it.pageInfo, it.nextFunc = iterator.NewPageInfo(fetch, it.bufLen, it.takeBuf)
it.pageInfo.MaxSize = int(req.GetPageSize())
it.pageInfo.Token = req.GetPageToken()
return it
}