feat(pubsub): add v2 topic and publishing samples #5107
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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@@ -18,12 +18,13 @@ package topics | |
| import ( | ||
| "context" | ||
| "fmt" | ||
| "io" | ||
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| "cloud.google.com/go/iam/apiv1/iampb" | ||
| "cloud.google.com/go/pubsub/v2" | ||
| ) | ||
|
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| func addUsers(w io.Writer, projectID, topicID string) error { | ||
| // projectID := "my-project-id" | ||
| // topicID := "my-topic" | ||
| ctx := context.Background() | ||
|
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@@ -33,21 +34,34 @@ func addUsers(projectID, topicID string) error { | |
| } | ||
| defer client.Close() | ||
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| topicName := fmt.Sprintf("projects/%s/topics/%s", projectID, topicID) | ||
| req := &iampb.GetIamPolicyRequest{ | ||
| Resource: topicName, | ||
| } | ||
| policy, err := client.TopicAdminClient.GetIamPolicy(ctx, req) | ||
| if err != nil { | ||
| return fmt.Errorf("error calling GetIamPolicy: %w", err) | ||
| } | ||
| b1 := &iampb.Binding{ | ||
| Role: "roles/viewer", | ||
| Members: []string{"allUsers"}, | ||
| } | ||
| b2 := &iampb.Binding{ | ||
| Role: "roles/editor", | ||
| // Other valid prefixes are "serviceAccount:", "user:" | ||
| // See the documentation for more values. | ||
| Members: []string{"group:[email protected]"}, | ||
| } | ||
| policy.Bindings = append(policy.Bindings, b1, b2) | ||
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| setRequest := &iampb.SetIamPolicyRequest{ | ||
| Resource: topicName, | ||
| Policy: policy, | ||
| } | ||
| _, err = client.TopicAdminClient.SetIamPolicy(ctx, setRequest) | ||
| if err != nil { | ||
| return fmt.Errorf("error calling SetIamPolicy: %w", err) | ||
| } | ||
| return nil | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
|
|
@@ -18,35 +18,38 @@ package topics | |
| import ( | ||
| "context" | ||
| "fmt" | ||
| "io" | ||
|
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| "cloud.google.com/go/pubsub/v2" | ||
| "cloud.google.com/go/pubsub/v2/apiv1/pubsubpb" | ||
| "google.golang.org/api/iterator" | ||
| ) | ||
|
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| func listTopics(w io.Writer, projectID string) error { | ||
| // projectID := "my-project-id" | ||
| ctx := context.Background() | ||
| client, err := pubsub.NewClient(ctx, projectID) | ||
| if err != nil { | ||
| return fmt.Errorf("pubsub.NewClient: %w", err) | ||
| } | ||
| defer client.Close() | ||
|
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| req := &pubsubpb.ListTopicsRequest{ | ||
| Project: fmt.Sprintf("projects/%s", projectID), | ||
| } | ||
| it := client.TopicAdminClient.ListTopics(ctx, req) | ||
| for { | ||
| topic, err := it.Next() | ||
| if err == iterator.Done { | ||
| break | ||
| } | ||
| if err != nil { | ||
| return fmt.Errorf("error listing topics: %w", err) | ||
| } | ||
| fmt.Fprintf(w, "got topic: %s\n", topic) | ||
|
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| } | ||
| return nil | ||
| } | ||
|
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| // [END pubsub_list_topics] | ||
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Per the Google Go style guide, function names should be descriptive and in camelCase. Consider renaming this function to
addUsersToTopic.