v1 Abbonarsi con pull asincrono (OBSOLETO)
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(DEPRECATO) Sottoscrizione utilizzando la modalità pull asincrona
Esempio di codice
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[[["Facile da capire","easyToUnderstand","thumb-up"],["Il problema è stato risolto","solvedMyProblem","thumb-up"],["Altra","otherUp","thumb-up"]],[["Difficile da capire","hardToUnderstand","thumb-down"],["Informazioni o codice di esempio errati","incorrectInformationOrSampleCode","thumb-down"],["Mancano le informazioni o gli esempi di cui ho bisogno","missingTheInformationSamplesINeed","thumb-down"],["Problema di traduzione","translationIssue","thumb-down"],["Altra","otherDown","thumb-down"]],[],[],[],null,["# v1 Subscribe with asynchronous pull (DEPRECATED)\n\n(DEPRECATED) Subscribe with asynchronous pull\n\nCode sample\n-----------\n\n### Go\n\n\nBefore trying this sample, follow the Go setup instructions in the\n[Pub/Sub quickstart using\nclient libraries](/pubsub/docs/quickstart-client-libraries).\n\n\nFor more information, see the\n[Pub/Sub Go API\nreference documentation](https://godoc.org/cloud.google.com/go/pubsub).\n\n\nTo authenticate to Pub/Sub, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n import (\n \t\"context\"\n \t\"fmt\"\n \t\"io\"\n \t\"sync/atomic\"\n \t\"time\"\n\n \t\"cloud.google.com/go/pubsub\"\n )\n\n func pullMsgs(w io.Writer, projectID, subID string) error {\n \t// projectID := \"my-project-id\"\n \t// subID := \"my-sub\"\n \tctx := context.Background()\n \tclient, err := pubsub.https://cloud.google.com/go/docs/reference/cloud.google.com/go/pubsub/latest/index.html#cloud_google_com_go_pubsub_Client_NewClient(ctx, projectID)\n \tif err != nil {\n \t\treturn fmt.Errorf(\"pubsub.NewClient: %w\", err)\n \t}\n \tdefer client.Close()\n\n \tsub := client.Subscription(subID)\n\n \t// Receive messages for 10 seconds, which simplifies testing.\n \t// Comment this out in production, since `Receive` should\n \t// be used as a long running operation.\n \tctx, cancel := context.WithTimeout(ctx, 10*time.Second)\n \tdefer cancel()\n\n \tvar received int32\n \terr = sub.Receive(ctx, func(_ context.Context, msg *pubsub.Message) {\n \t\tfmt.Fprintf(w, \"Got message: %q\\n\", string(msg.Data))\n \t\tatomic.AddInt32(&received, 1)\n \t\tmsg.Ack()\n \t})\n \tif err != nil {\n \t\treturn fmt.Errorf(\"sub.Receive: %w\", err)\n \t}\n \tfmt.Fprintf(w, \"Received %d messages\\n\", received)\n\n \treturn nil\n }\n\n### Ruby\n\n\nBefore trying this sample, follow the Ruby setup instructions in the\n[Pub/Sub quickstart using\nclient libraries](/pubsub/docs/quickstart-client-libraries).\n\n\nFor more information, see the\n[Pub/Sub Ruby API\nreference documentation](https://googleapis.dev/ruby/google-cloud-pubsub/latest/Google/Cloud/PubSub.html).\n\n\nTo authenticate to Pub/Sub, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n # subscription_id = \"your-subscription-id\"\n\n pubsub = Google::Cloud::https://cloud.google.com/ruby/docs/reference/google-cloud-pubsub/latest/Google-Cloud.html.new\n\n subscription = pubsub.subscription subscription_id\n subscriber = subscription.listen do |received_message|\n puts \"Received message: #{received_message.data}\"\n received_message.acknowledge!\n end\n\n subscriber.start\n # Let the main thread sleep for 60 seconds so the thread for listening\n # messages does not quit\n sleep 60\n subscriber.stop.wait!\n\nWhat's next\n-----------\n\n\nTo search and filter code samples for other Google Cloud products, see the\n[Google Cloud sample browser](/docs/samples?product=pubsub)."]]