mirror of
https://github.com/Luzifer/nginx-sso.git
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369 lines
9.1 KiB
Go
369 lines
9.1 KiB
Go
// Copyright 2014 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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// http://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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package pubsub_test
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import (
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"context"
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"fmt"
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"time"
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"cloud.google.com/go/pubsub"
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"google.golang.org/api/iterator"
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)
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func ExampleNewClient() {
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ctx := context.Background()
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_, err := pubsub.NewClient(ctx, "project-id")
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if err != nil {
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// TODO: Handle error.
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}
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// See the other examples to learn how to use the Client.
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}
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func ExampleClient_CreateTopic() {
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ctx := context.Background()
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client, err := pubsub.NewClient(ctx, "project-id")
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if err != nil {
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// TODO: Handle error.
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}
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// Create a new topic with the given name.
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topic, err := client.CreateTopic(ctx, "topicName")
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if err != nil {
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// TODO: Handle error.
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}
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_ = topic // TODO: use the topic.
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}
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// Use TopicInProject to refer to a topic that is not in the client's project, such
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// as a public topic.
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func ExampleClient_TopicInProject() {
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ctx := context.Background()
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client, err := pubsub.NewClient(ctx, "project-id")
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if err != nil {
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// TODO: Handle error.
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}
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topic := client.TopicInProject("topicName", "another-project-id")
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_ = topic // TODO: use the topic.
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}
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func ExampleClient_CreateSubscription() {
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ctx := context.Background()
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client, err := pubsub.NewClient(ctx, "project-id")
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if err != nil {
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// TODO: Handle error.
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}
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// Create a new topic with the given name.
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topic, err := client.CreateTopic(ctx, "topicName")
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if err != nil {
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// TODO: Handle error.
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}
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// Create a new subscription to the previously created topic
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// with the given name.
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sub, err := client.CreateSubscription(ctx, "subName", pubsub.SubscriptionConfig{
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Topic: topic,
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AckDeadline: 10 * time.Second,
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})
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if err != nil {
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// TODO: Handle error.
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}
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_ = sub // TODO: use the subscription.
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}
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func ExampleTopic_Delete() {
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ctx := context.Background()
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client, err := pubsub.NewClient(ctx, "project-id")
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if err != nil {
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// TODO: Handle error.
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}
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topic := client.Topic("topicName")
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if err := topic.Delete(ctx); err != nil {
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// TODO: Handle error.
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}
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}
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func ExampleTopic_Exists() {
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ctx := context.Background()
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client, err := pubsub.NewClient(ctx, "project-id")
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if err != nil {
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// TODO: Handle error.
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}
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topic := client.Topic("topicName")
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ok, err := topic.Exists(ctx)
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if err != nil {
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// TODO: Handle error.
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}
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if !ok {
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// Topic doesn't exist.
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}
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}
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func ExampleTopic_Publish() {
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ctx := context.Background()
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client, err := pubsub.NewClient(ctx, "project-id")
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if err != nil {
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// TODO: Handle error.
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}
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topic := client.Topic("topicName")
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defer topic.Stop()
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var results []*pubsub.PublishResult
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r := topic.Publish(ctx, &pubsub.Message{
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Data: []byte("hello world"),
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})
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results = append(results, r)
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// Do other work ...
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for _, r := range results {
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id, err := r.Get(ctx)
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if err != nil {
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// TODO: Handle error.
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}
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fmt.Printf("Published a message with a message ID: %s\n", id)
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}
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}
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func ExampleTopic_Subscriptions() {
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ctx := context.Background()
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client, err := pubsub.NewClient(ctx, "project-id")
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if err != nil {
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// TODO: Handle error.
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}
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topic := client.Topic("topic-name")
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// List all subscriptions of the topic (maybe of multiple projects).
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for subs := topic.Subscriptions(ctx); ; {
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sub, err := subs.Next()
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if err == iterator.Done {
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break
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}
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if err != nil {
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// TODO: Handle error.
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}
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_ = sub // TODO: use the subscription.
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}
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}
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func ExampleSubscription_Delete() {
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ctx := context.Background()
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client, err := pubsub.NewClient(ctx, "project-id")
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if err != nil {
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// TODO: Handle error.
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}
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sub := client.Subscription("subName")
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if err := sub.Delete(ctx); err != nil {
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// TODO: Handle error.
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}
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}
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func ExampleSubscription_Exists() {
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ctx := context.Background()
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client, err := pubsub.NewClient(ctx, "project-id")
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if err != nil {
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// TODO: Handle error.
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}
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sub := client.Subscription("subName")
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ok, err := sub.Exists(ctx)
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if err != nil {
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// TODO: Handle error.
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}
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if !ok {
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// Subscription doesn't exist.
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}
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}
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func ExampleSubscription_Config() {
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ctx := context.Background()
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client, err := pubsub.NewClient(ctx, "project-id")
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if err != nil {
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// TODO: Handle error.
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}
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sub := client.Subscription("subName")
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config, err := sub.Config(ctx)
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if err != nil {
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// TODO: Handle error.
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}
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fmt.Println(config)
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}
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func ExampleSubscription_Receive() {
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ctx := context.Background()
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client, err := pubsub.NewClient(ctx, "project-id")
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if err != nil {
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// TODO: Handle error.
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}
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sub := client.Subscription("subName")
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err = sub.Receive(ctx, func(ctx context.Context, m *pubsub.Message) {
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// TODO: Handle message.
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// NOTE: May be called concurrently; synchronize access to shared memory.
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m.Ack()
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})
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if err != context.Canceled {
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// TODO: Handle error.
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}
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}
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// This example shows how to configure keepalive so that unacknoweldged messages
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// expire quickly, allowing other subscribers to take them.
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func ExampleSubscription_Receive_maxExtension() {
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ctx := context.Background()
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client, err := pubsub.NewClient(ctx, "project-id")
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if err != nil {
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// TODO: Handle error.
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}
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sub := client.Subscription("subName")
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// This program is expected to process and acknowledge messages in 30 seconds. If
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// not, the Pub/Sub API will assume the message is not acknowledged.
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sub.ReceiveSettings.MaxExtension = 30 * time.Second
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err = sub.Receive(ctx, func(ctx context.Context, m *pubsub.Message) {
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// TODO: Handle message.
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m.Ack()
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})
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if err != context.Canceled {
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// TODO: Handle error.
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}
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}
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// This example shows how to throttle Subscription.Receive, which aims for high
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// throughput by default. By limiting the number of messages and/or bytes being
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// processed at once, you can bound your program's resource consumption.
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func ExampleSubscription_Receive_maxOutstanding() {
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ctx := context.Background()
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client, err := pubsub.NewClient(ctx, "project-id")
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if err != nil {
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// TODO: Handle error.
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}
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sub := client.Subscription("subName")
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sub.ReceiveSettings.MaxOutstandingMessages = 5
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sub.ReceiveSettings.MaxOutstandingBytes = 10e6
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err = sub.Receive(ctx, func(ctx context.Context, m *pubsub.Message) {
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// TODO: Handle message.
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m.Ack()
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})
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if err != context.Canceled {
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// TODO: Handle error.
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}
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}
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func ExampleSubscription_Update() {
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ctx := context.Background()
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client, err := pubsub.NewClient(ctx, "project-id")
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if err != nil {
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// TODO: Handle error.
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}
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sub := client.Subscription("subName")
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subConfig, err := sub.Update(ctx, pubsub.SubscriptionConfigToUpdate{
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PushConfig: &pubsub.PushConfig{Endpoint: "https://example.com/push"},
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})
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if err != nil {
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// TODO: Handle error.
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}
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_ = subConfig // TODO: Use SubscriptionConfig.
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}
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func ExampleSubscription_CreateSnapshot() {
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ctx := context.Background()
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client, err := pubsub.NewClient(ctx, "project-id")
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if err != nil {
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// TODO: Handle error.
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}
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sub := client.Subscription("subName")
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snapConfig, err := sub.CreateSnapshot(ctx, "snapshotName")
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if err != nil {
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// TODO: Handle error.
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}
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_ = snapConfig // TODO: Use SnapshotConfig.
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}
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func ExampleSubscription_SeekToSnapshot() {
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ctx := context.Background()
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client, err := pubsub.NewClient(ctx, "project-id")
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if err != nil {
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// TODO: Handle error.
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}
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sub := client.Subscription("subName")
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snap := client.Snapshot("snapshotName")
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if err := sub.SeekToSnapshot(ctx, snap); err != nil {
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// TODO: Handle error.
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}
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}
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func ExampleSubscription_SeekToTime() {
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ctx := context.Background()
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client, err := pubsub.NewClient(ctx, "project-id")
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if err != nil {
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// TODO: Handle error.
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}
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sub := client.Subscription("subName")
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if err := sub.SeekToTime(ctx, time.Now().Add(-time.Hour)); err != nil {
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// TODO: Handle error.
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}
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}
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func ExampleSnapshot_Delete() {
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ctx := context.Background()
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client, err := pubsub.NewClient(ctx, "project-id")
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if err != nil {
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// TODO: Handle error.
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}
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snap := client.Snapshot("snapshotName")
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if err := snap.Delete(ctx); err != nil {
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// TODO: Handle error.
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}
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}
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func ExampleClient_Snapshots() {
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ctx := context.Background()
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client, err := pubsub.NewClient(ctx, "project-id")
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if err != nil {
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// TODO: Handle error.
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}
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// List all snapshots for the project.
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iter := client.Snapshots(ctx)
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_ = iter // TODO: iterate using Next.
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}
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func ExampleSnapshotConfigIterator_Next() {
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ctx := context.Background()
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client, err := pubsub.NewClient(ctx, "project-id")
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if err != nil {
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// TODO: Handle error.
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}
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// List all snapshots for the project.
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iter := client.Snapshots(ctx)
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for {
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snapConfig, err := iter.Next()
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if err == iterator.Done {
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break
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}
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if err != nil {
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// TODO: Handle error.
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}
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_ = snapConfig // TODO: use the SnapshotConfig.
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}
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}
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// TODO(jba): write an example for PublishResult.Ready
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// TODO(jba): write an example for Subscription.IAM
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// TODO(jba): write an example for Topic.IAM
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// TODO(jba): write an example for Topic.Stop
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