mirror of
https://github.com/octoleo/restic.git
synced 2024-11-14 09:14:07 +00:00
2b39f9f4b2
Among others, this updates minio-go, so that the new "eu-west-3" zone for AWS is supported.
594 lines
24 KiB
Go
594 lines
24 KiB
Go
// Copyright 2018 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// AUTO-GENERATED CODE. DO NOT EDIT.
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package pubsub
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import (
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"math"
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"time"
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"cloud.google.com/go/iam"
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"cloud.google.com/go/internal/version"
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gax "github.com/googleapis/gax-go"
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"golang.org/x/net/context"
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"google.golang.org/api/iterator"
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"google.golang.org/api/option"
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"google.golang.org/api/transport"
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pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
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"google.golang.org/grpc"
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"google.golang.org/grpc/codes"
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"google.golang.org/grpc/metadata"
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)
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// SubscriberCallOptions contains the retry settings for each method of SubscriberClient.
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type SubscriberCallOptions struct {
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CreateSubscription []gax.CallOption
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GetSubscription []gax.CallOption
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UpdateSubscription []gax.CallOption
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ListSubscriptions []gax.CallOption
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DeleteSubscription []gax.CallOption
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ModifyAckDeadline []gax.CallOption
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Acknowledge []gax.CallOption
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Pull []gax.CallOption
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StreamingPull []gax.CallOption
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ModifyPushConfig []gax.CallOption
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ListSnapshots []gax.CallOption
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CreateSnapshot []gax.CallOption
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UpdateSnapshot []gax.CallOption
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DeleteSnapshot []gax.CallOption
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Seek []gax.CallOption
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}
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func defaultSubscriberClientOptions() []option.ClientOption {
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return []option.ClientOption{
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option.WithEndpoint("pubsub.googleapis.com:443"),
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option.WithScopes(DefaultAuthScopes()...),
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}
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}
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func defaultSubscriberCallOptions() *SubscriberCallOptions {
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retry := map[[2]string][]gax.CallOption{
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{"default", "idempotent"}: {
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gax.WithRetry(func() gax.Retryer {
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return gax.OnCodes([]codes.Code{
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codes.DeadlineExceeded,
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codes.Unavailable,
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}, gax.Backoff{
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Initial: 100 * time.Millisecond,
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Max: 60000 * time.Millisecond,
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Multiplier: 1.3,
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})
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}),
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},
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{"messaging", "pull"}: {
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gax.WithRetry(func() gax.Retryer {
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return gax.OnCodes([]codes.Code{
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codes.Canceled,
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codes.DeadlineExceeded,
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codes.Internal,
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codes.ResourceExhausted,
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codes.Unavailable,
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}, gax.Backoff{
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Initial: 100 * time.Millisecond,
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Max: 60000 * time.Millisecond,
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Multiplier: 1.3,
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})
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}),
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},
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{"streaming_messaging", "pull"}: {
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gax.WithRetry(func() gax.Retryer {
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return gax.OnCodes([]codes.Code{
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codes.Canceled,
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codes.DeadlineExceeded,
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codes.Internal,
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codes.ResourceExhausted,
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codes.Unavailable,
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}, gax.Backoff{
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Initial: 100 * time.Millisecond,
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Max: 60000 * time.Millisecond,
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Multiplier: 1.3,
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})
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}),
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},
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}
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return &SubscriberCallOptions{
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CreateSubscription: retry[[2]string{"default", "idempotent"}],
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GetSubscription: retry[[2]string{"default", "idempotent"}],
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UpdateSubscription: retry[[2]string{"default", "idempotent"}],
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ListSubscriptions: retry[[2]string{"default", "idempotent"}],
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DeleteSubscription: retry[[2]string{"default", "idempotent"}],
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ModifyAckDeadline: retry[[2]string{"default", "non_idempotent"}],
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Acknowledge: retry[[2]string{"messaging", "non_idempotent"}],
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Pull: retry[[2]string{"messaging", "pull"}],
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StreamingPull: retry[[2]string{"streaming_messaging", "pull"}],
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ModifyPushConfig: retry[[2]string{"default", "non_idempotent"}],
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ListSnapshots: retry[[2]string{"default", "idempotent"}],
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CreateSnapshot: retry[[2]string{"default", "idempotent"}],
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UpdateSnapshot: retry[[2]string{"default", "idempotent"}],
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DeleteSnapshot: retry[[2]string{"default", "idempotent"}],
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Seek: retry[[2]string{"default", "non_idempotent"}],
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}
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}
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// SubscriberClient is a client for interacting with Google Cloud Pub/Sub API.
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type SubscriberClient struct {
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// The connection to the service.
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conn *grpc.ClientConn
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// The gRPC API client.
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subscriberClient pubsubpb.SubscriberClient
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// The call options for this service.
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CallOptions *SubscriberCallOptions
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// The x-goog-* metadata to be sent with each request.
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xGoogMetadata metadata.MD
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}
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// NewSubscriberClient creates a new subscriber client.
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//
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// The service that an application uses to manipulate subscriptions and to
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// consume messages from a subscription via the Pull method.
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func NewSubscriberClient(ctx context.Context, opts ...option.ClientOption) (*SubscriberClient, error) {
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conn, err := transport.DialGRPC(ctx, append(defaultSubscriberClientOptions(), opts...)...)
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if err != nil {
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return nil, err
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}
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c := &SubscriberClient{
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conn: conn,
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CallOptions: defaultSubscriberCallOptions(),
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subscriberClient: pubsubpb.NewSubscriberClient(conn),
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}
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c.SetGoogleClientInfo()
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return c, nil
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}
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// Connection returns the client's connection to the API service.
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func (c *SubscriberClient) Connection() *grpc.ClientConn {
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return c.conn
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}
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// Close closes the connection to the API service. The user should invoke this when
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// the client is no longer required.
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func (c *SubscriberClient) Close() error {
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return c.conn.Close()
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}
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// SetGoogleClientInfo sets the name and version of the application in
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// the `x-goog-api-client` header passed on each request. Intended for
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// use by Google-written clients.
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func (c *SubscriberClient) SetGoogleClientInfo(keyval ...string) {
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kv := append([]string{"gl-go", version.Go()}, keyval...)
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kv = append(kv, "gapic", version.Repo, "gax", gax.Version, "grpc", grpc.Version)
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c.xGoogMetadata = metadata.Pairs("x-goog-api-client", gax.XGoogHeader(kv...))
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}
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func (c *SubscriberClient) SubscriptionIAM(subscription *pubsubpb.Subscription) *iam.Handle {
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return iam.InternalNewHandle(c.Connection(), subscription.Name)
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}
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func (c *SubscriberClient) TopicIAM(topic *pubsubpb.Topic) *iam.Handle {
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return iam.InternalNewHandle(c.Connection(), topic.Name)
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}
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// CreateSubscription creates a subscription to a given topic.
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// If the subscription already exists, returns ALREADY_EXISTS.
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// If the corresponding topic doesn't exist, returns NOT_FOUND.
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//
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// If the name is not provided in the request, the server will assign a random
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// name for this subscription on the same project as the topic, conforming
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// to the
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// resource name format (at https://cloud.google.com/pubsub/docs/overview#names).
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// The generated name is populated in the returned Subscription object.
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// Note that for REST API requests, you must specify a name in the request.
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func (c *SubscriberClient) CreateSubscription(ctx context.Context, req *pubsubpb.Subscription, opts ...gax.CallOption) (*pubsubpb.Subscription, error) {
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ctx = insertMetadata(ctx, c.xGoogMetadata)
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opts = append(c.CallOptions.CreateSubscription[0:len(c.CallOptions.CreateSubscription):len(c.CallOptions.CreateSubscription)], opts...)
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var resp *pubsubpb.Subscription
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err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
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var err error
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resp, err = c.subscriberClient.CreateSubscription(ctx, req, settings.GRPC...)
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return err
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}, opts...)
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if err != nil {
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return nil, err
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}
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return resp, nil
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}
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// GetSubscription gets the configuration details of a subscription.
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func (c *SubscriberClient) GetSubscription(ctx context.Context, req *pubsubpb.GetSubscriptionRequest, opts ...gax.CallOption) (*pubsubpb.Subscription, error) {
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ctx = insertMetadata(ctx, c.xGoogMetadata)
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opts = append(c.CallOptions.GetSubscription[0:len(c.CallOptions.GetSubscription):len(c.CallOptions.GetSubscription)], opts...)
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var resp *pubsubpb.Subscription
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err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
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var err error
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resp, err = c.subscriberClient.GetSubscription(ctx, req, settings.GRPC...)
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return err
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}, opts...)
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if err != nil {
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return nil, err
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}
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return resp, nil
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}
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// UpdateSubscription updates an existing subscription. Note that certain properties of a
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// subscription, such as its topic, are not modifiable.
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// NOTE: The style guide requires body: "subscription" instead of body: "*".
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// Keeping the latter for internal consistency in V1, however it should be
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// corrected in V2. See
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// https://cloud.google.com/apis/design/standard_methods#update for details.
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func (c *SubscriberClient) UpdateSubscription(ctx context.Context, req *pubsubpb.UpdateSubscriptionRequest, opts ...gax.CallOption) (*pubsubpb.Subscription, error) {
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ctx = insertMetadata(ctx, c.xGoogMetadata)
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opts = append(c.CallOptions.UpdateSubscription[0:len(c.CallOptions.UpdateSubscription):len(c.CallOptions.UpdateSubscription)], opts...)
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var resp *pubsubpb.Subscription
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err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
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var err error
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resp, err = c.subscriberClient.UpdateSubscription(ctx, req, settings.GRPC...)
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return err
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}, opts...)
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if err != nil {
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return nil, err
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}
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return resp, nil
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}
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// ListSubscriptions lists matching subscriptions.
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func (c *SubscriberClient) ListSubscriptions(ctx context.Context, req *pubsubpb.ListSubscriptionsRequest, opts ...gax.CallOption) *SubscriptionIterator {
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ctx = insertMetadata(ctx, c.xGoogMetadata)
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opts = append(c.CallOptions.ListSubscriptions[0:len(c.CallOptions.ListSubscriptions):len(c.CallOptions.ListSubscriptions)], opts...)
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it := &SubscriptionIterator{}
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it.InternalFetch = func(pageSize int, pageToken string) ([]*pubsubpb.Subscription, string, error) {
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var resp *pubsubpb.ListSubscriptionsResponse
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req.PageToken = pageToken
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if pageSize > math.MaxInt32 {
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req.PageSize = math.MaxInt32
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} else {
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req.PageSize = int32(pageSize)
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}
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err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
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var err error
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resp, err = c.subscriberClient.ListSubscriptions(ctx, req, settings.GRPC...)
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return err
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}, opts...)
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if err != nil {
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return nil, "", err
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}
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return resp.Subscriptions, resp.NextPageToken, nil
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}
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fetch := func(pageSize int, pageToken string) (string, error) {
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items, nextPageToken, err := it.InternalFetch(pageSize, pageToken)
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if err != nil {
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return "", err
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}
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it.items = append(it.items, items...)
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return nextPageToken, nil
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}
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it.pageInfo, it.nextFunc = iterator.NewPageInfo(fetch, it.bufLen, it.takeBuf)
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return it
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}
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// DeleteSubscription deletes an existing subscription. All messages retained in the subscription
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// are immediately dropped. Calls to Pull after deletion will return
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// NOT_FOUND. After a subscription is deleted, a new one may be created with
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// the same name, but the new one has no association with the old
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// subscription or its topic unless the same topic is specified.
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func (c *SubscriberClient) DeleteSubscription(ctx context.Context, req *pubsubpb.DeleteSubscriptionRequest, opts ...gax.CallOption) error {
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ctx = insertMetadata(ctx, c.xGoogMetadata)
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opts = append(c.CallOptions.DeleteSubscription[0:len(c.CallOptions.DeleteSubscription):len(c.CallOptions.DeleteSubscription)], opts...)
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err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
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var err error
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_, err = c.subscriberClient.DeleteSubscription(ctx, req, settings.GRPC...)
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return err
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}, opts...)
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return err
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}
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// ModifyAckDeadline modifies the ack deadline for a specific message. This method is useful
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// to indicate that more time is needed to process a message by the
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// subscriber, or to make the message available for redelivery if the
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// processing was interrupted. Note that this does not modify the
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// subscription-level ackDeadlineSeconds used for subsequent messages.
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func (c *SubscriberClient) ModifyAckDeadline(ctx context.Context, req *pubsubpb.ModifyAckDeadlineRequest, opts ...gax.CallOption) error {
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ctx = insertMetadata(ctx, c.xGoogMetadata)
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opts = append(c.CallOptions.ModifyAckDeadline[0:len(c.CallOptions.ModifyAckDeadline):len(c.CallOptions.ModifyAckDeadline)], opts...)
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err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
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var err error
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_, err = c.subscriberClient.ModifyAckDeadline(ctx, req, settings.GRPC...)
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return err
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}, opts...)
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return err
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}
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// Acknowledge acknowledges the messages associated with the ack_ids in the
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// AcknowledgeRequest. The Pub/Sub system can remove the relevant messages
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// from the subscription.
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//
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// Acknowledging a message whose ack deadline has expired may succeed,
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// but such a message may be redelivered later. Acknowledging a message more
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// than once will not result in an error.
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func (c *SubscriberClient) Acknowledge(ctx context.Context, req *pubsubpb.AcknowledgeRequest, opts ...gax.CallOption) error {
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ctx = insertMetadata(ctx, c.xGoogMetadata)
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opts = append(c.CallOptions.Acknowledge[0:len(c.CallOptions.Acknowledge):len(c.CallOptions.Acknowledge)], opts...)
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err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
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var err error
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_, err = c.subscriberClient.Acknowledge(ctx, req, settings.GRPC...)
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return err
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}, opts...)
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return err
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}
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// Pull pulls messages from the server. Returns an empty list if there are no
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// messages available in the backlog. The server may return UNAVAILABLE if
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// there are too many concurrent pull requests pending for the given
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// subscription.
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func (c *SubscriberClient) Pull(ctx context.Context, req *pubsubpb.PullRequest, opts ...gax.CallOption) (*pubsubpb.PullResponse, error) {
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ctx = insertMetadata(ctx, c.xGoogMetadata)
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opts = append(c.CallOptions.Pull[0:len(c.CallOptions.Pull):len(c.CallOptions.Pull)], opts...)
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var resp *pubsubpb.PullResponse
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err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
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var err error
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resp, err = c.subscriberClient.Pull(ctx, req, settings.GRPC...)
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return err
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}, opts...)
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if err != nil {
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return nil, err
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}
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return resp, nil
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}
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// StreamingPull (EXPERIMENTAL) StreamingPull is an experimental feature. This RPC will
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// respond with UNIMPLEMENTED errors unless you have been invited to test
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// this feature. Contact cloud-pubsub@google.com with any questions.
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//
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// Establishes a stream with the server, which sends messages down to the
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// client. The client streams acknowledgements and ack deadline modifications
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// back to the server. The server will close the stream and return the status
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// on any error. The server may close the stream with status OK to reassign
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// server-side resources, in which case, the client should re-establish the
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// stream. UNAVAILABLE may also be returned in the case of a transient error
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// (e.g., a server restart). These should also be retried by the client. Flow
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// control can be achieved by configuring the underlying RPC channel.
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func (c *SubscriberClient) StreamingPull(ctx context.Context, opts ...gax.CallOption) (pubsubpb.Subscriber_StreamingPullClient, error) {
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ctx = insertMetadata(ctx, c.xGoogMetadata)
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opts = append(c.CallOptions.StreamingPull[0:len(c.CallOptions.StreamingPull):len(c.CallOptions.StreamingPull)], opts...)
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var resp pubsubpb.Subscriber_StreamingPullClient
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err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
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var err error
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resp, err = c.subscriberClient.StreamingPull(ctx, settings.GRPC...)
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return err
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}, opts...)
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if err != nil {
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return nil, err
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}
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return resp, nil
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}
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// ModifyPushConfig modifies the PushConfig for a specified subscription.
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//
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// This may be used to change a push subscription to a pull one (signified by
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// an empty PushConfig) or vice versa, or change the endpoint URL and other
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// attributes of a push subscription. Messages will accumulate for delivery
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// continuously through the call regardless of changes to the PushConfig.
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func (c *SubscriberClient) ModifyPushConfig(ctx context.Context, req *pubsubpb.ModifyPushConfigRequest, opts ...gax.CallOption) error {
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ctx = insertMetadata(ctx, c.xGoogMetadata)
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opts = append(c.CallOptions.ModifyPushConfig[0:len(c.CallOptions.ModifyPushConfig):len(c.CallOptions.ModifyPushConfig)], opts...)
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err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
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var err error
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_, err = c.subscriberClient.ModifyPushConfig(ctx, req, settings.GRPC...)
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return err
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}, opts...)
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return err
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}
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// ListSnapshots lists the existing snapshots.
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func (c *SubscriberClient) ListSnapshots(ctx context.Context, req *pubsubpb.ListSnapshotsRequest, opts ...gax.CallOption) *SnapshotIterator {
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ctx = insertMetadata(ctx, c.xGoogMetadata)
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opts = append(c.CallOptions.ListSnapshots[0:len(c.CallOptions.ListSnapshots):len(c.CallOptions.ListSnapshots)], opts...)
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it := &SnapshotIterator{}
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it.InternalFetch = func(pageSize int, pageToken string) ([]*pubsubpb.Snapshot, string, error) {
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var resp *pubsubpb.ListSnapshotsResponse
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req.PageToken = pageToken
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if pageSize > math.MaxInt32 {
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req.PageSize = math.MaxInt32
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} else {
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req.PageSize = int32(pageSize)
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}
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err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
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var err error
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resp, err = c.subscriberClient.ListSnapshots(ctx, req, settings.GRPC...)
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return err
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}, opts...)
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if err != nil {
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return nil, "", err
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}
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return resp.Snapshots, resp.NextPageToken, nil
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}
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fetch := func(pageSize int, pageToken string) (string, error) {
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items, nextPageToken, err := it.InternalFetch(pageSize, pageToken)
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if err != nil {
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return "", err
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}
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it.items = append(it.items, items...)
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return nextPageToken, nil
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}
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it.pageInfo, it.nextFunc = iterator.NewPageInfo(fetch, it.bufLen, it.takeBuf)
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return it
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}
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// CreateSnapshot creates a snapshot from the requested subscription.
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// If the snapshot already exists, returns ALREADY_EXISTS.
|
|
// If the requested subscription doesn't exist, returns NOT_FOUND.
|
|
//
|
|
// 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 (at https://cloud.google.com/pubsub/docs/overview#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.
|
|
func (c *SubscriberClient) CreateSnapshot(ctx context.Context, req *pubsubpb.CreateSnapshotRequest, opts ...gax.CallOption) (*pubsubpb.Snapshot, error) {
|
|
ctx = insertMetadata(ctx, c.xGoogMetadata)
|
|
opts = append(c.CallOptions.CreateSnapshot[0:len(c.CallOptions.CreateSnapshot):len(c.CallOptions.CreateSnapshot)], opts...)
|
|
var resp *pubsubpb.Snapshot
|
|
err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
|
|
var err error
|
|
resp, err = c.subscriberClient.CreateSnapshot(ctx, req, settings.GRPC...)
|
|
return err
|
|
}, opts...)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return resp, nil
|
|
}
|
|
|
|
// UpdateSnapshot updates an existing snapshot. Note that certain properties of a snapshot
|
|
// are not modifiable.
|
|
// NOTE: The style guide requires body: "snapshot" instead of body: "*".
|
|
// Keeping the latter for internal consistency in V1, however it should be
|
|
// corrected in V2. See
|
|
// https://cloud.google.com/apis/design/standard_methods#update for details.
|
|
func (c *SubscriberClient) UpdateSnapshot(ctx context.Context, req *pubsubpb.UpdateSnapshotRequest, opts ...gax.CallOption) (*pubsubpb.Snapshot, error) {
|
|
ctx = insertMetadata(ctx, c.xGoogMetadata)
|
|
opts = append(c.CallOptions.UpdateSnapshot[0:len(c.CallOptions.UpdateSnapshot):len(c.CallOptions.UpdateSnapshot)], opts...)
|
|
var resp *pubsubpb.Snapshot
|
|
err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
|
|
var err error
|
|
resp, err = c.subscriberClient.UpdateSnapshot(ctx, req, settings.GRPC...)
|
|
return err
|
|
}, opts...)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return resp, nil
|
|
}
|
|
|
|
// DeleteSnapshot removes an existing snapshot. 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.
|
|
func (c *SubscriberClient) DeleteSnapshot(ctx context.Context, req *pubsubpb.DeleteSnapshotRequest, opts ...gax.CallOption) error {
|
|
ctx = insertMetadata(ctx, c.xGoogMetadata)
|
|
opts = append(c.CallOptions.DeleteSnapshot[0:len(c.CallOptions.DeleteSnapshot):len(c.CallOptions.DeleteSnapshot)], opts...)
|
|
err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
|
|
var err error
|
|
_, err = c.subscriberClient.DeleteSnapshot(ctx, req, settings.GRPC...)
|
|
return err
|
|
}, opts...)
|
|
return err
|
|
}
|
|
|
|
// Seek seeks an existing subscription to a point in time or to a given snapshot,
|
|
// whichever is provided in the request.
|
|
func (c *SubscriberClient) Seek(ctx context.Context, req *pubsubpb.SeekRequest, opts ...gax.CallOption) (*pubsubpb.SeekResponse, error) {
|
|
ctx = insertMetadata(ctx, c.xGoogMetadata)
|
|
opts = append(c.CallOptions.Seek[0:len(c.CallOptions.Seek):len(c.CallOptions.Seek)], opts...)
|
|
var resp *pubsubpb.SeekResponse
|
|
err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
|
|
var err error
|
|
resp, err = c.subscriberClient.Seek(ctx, req, settings.GRPC...)
|
|
return err
|
|
}, opts...)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return resp, nil
|
|
}
|
|
|
|
// SnapshotIterator manages a stream of *pubsubpb.Snapshot.
|
|
type SnapshotIterator struct {
|
|
items []*pubsubpb.Snapshot
|
|
pageInfo *iterator.PageInfo
|
|
nextFunc func() error
|
|
|
|
// 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)
|
|
}
|
|
|
|
// PageInfo supports pagination. See the google.golang.org/api/iterator package for details.
|
|
func (it *SnapshotIterator) 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 *SnapshotIterator) Next() (*pubsubpb.Snapshot, error) {
|
|
var item *pubsubpb.Snapshot
|
|
if err := it.nextFunc(); err != nil {
|
|
return item, err
|
|
}
|
|
item = it.items[0]
|
|
it.items = it.items[1:]
|
|
return item, nil
|
|
}
|
|
|
|
func (it *SnapshotIterator) bufLen() int {
|
|
return len(it.items)
|
|
}
|
|
|
|
func (it *SnapshotIterator) takeBuf() interface{} {
|
|
b := it.items
|
|
it.items = nil
|
|
return b
|
|
}
|
|
|
|
// SubscriptionIterator manages a stream of *pubsubpb.Subscription.
|
|
type SubscriptionIterator struct {
|
|
items []*pubsubpb.Subscription
|
|
pageInfo *iterator.PageInfo
|
|
nextFunc func() error
|
|
|
|
// 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)
|
|
}
|
|
|
|
// PageInfo supports pagination. See the google.golang.org/api/iterator package for details.
|
|
func (it *SubscriptionIterator) 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 *SubscriptionIterator) Next() (*pubsubpb.Subscription, error) {
|
|
var item *pubsubpb.Subscription
|
|
if err := it.nextFunc(); err != nil {
|
|
return item, err
|
|
}
|
|
item = it.items[0]
|
|
it.items = it.items[1:]
|
|
return item, nil
|
|
}
|
|
|
|
func (it *SubscriptionIterator) bufLen() int {
|
|
return len(it.items)
|
|
}
|
|
|
|
func (it *SubscriptionIterator) takeBuf() interface{} {
|
|
b := it.items
|
|
it.items = nil
|
|
return b
|
|
}
|