github.com/thiagoyeds/go-cloud@v0.26.0/pubsub/mempubsub/example_test.go (about) 1 // Copyright 2019 The Go Cloud Development Kit Authors 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // https://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 package mempubsub_test 16 17 import ( 18 "context" 19 "log" 20 "time" 21 22 "gocloud.dev/pubsub" 23 "gocloud.dev/pubsub/mempubsub" 24 ) 25 26 func ExampleNewSubscription() { 27 // PRAGMA: This example is used on gocloud.dev; PRAGMA comments adjust how it is shown and can be ignored. 28 // PRAGMA: On gocloud.dev, hide lines until the next blank line. 29 ctx := context.Background() 30 31 // Construct a *pubsub.Topic. 32 topic := mempubsub.NewTopic() 33 defer topic.Shutdown(ctx) 34 35 // Construct a *pubsub.Subscription for the topic. 36 subscription := mempubsub.NewSubscription(topic, 1*time.Minute /* ack deadline */) 37 defer subscription.Shutdown(ctx) 38 } 39 40 func ExampleNewTopic() { 41 // PRAGMA: This example is used on gocloud.dev; PRAGMA comments adjust how it is shown and can be ignored. 42 // PRAGMA: On gocloud.dev, hide lines until the next blank line. 43 ctx := context.Background() 44 45 topic := mempubsub.NewTopic() 46 defer topic.Shutdown(ctx) 47 } 48 49 func Example_openSubscriptionFromURL() { 50 // PRAGMA: This example is used on gocloud.dev; PRAGMA comments adjust how it is shown and can be ignored. 51 // PRAGMA: On gocloud.dev, add a blank import: _ "gocloud.dev/pubsub/mempubsub" 52 // PRAGMA: On gocloud.dev, hide lines until the next blank line. 53 ctx := context.Background() 54 55 // Create a topic. 56 topic, err := pubsub.OpenTopic(ctx, "mem://topicA") 57 if err != nil { 58 log.Fatal(err) 59 } 60 defer topic.Shutdown(ctx) 61 62 // Create a subscription connected to that topic. 63 subscription, err := pubsub.OpenSubscription(ctx, "mem://topicA") 64 if err != nil { 65 log.Fatal(err) 66 } 67 defer subscription.Shutdown(ctx) 68 } 69 70 func Example_openTopicFromURL() { 71 // PRAGMA: This example is used on gocloud.dev; PRAGMA comments adjust how it is shown and can be ignored. 72 // PRAGMA: On gocloud.dev, add a blank import: _ "gocloud.dev/pubsub/mempubsub" 73 // PRAGMA: On gocloud.dev, hide lines until the next blank line. 74 ctx := context.Background() 75 76 topic, err := pubsub.OpenTopic(ctx, "mem://topicA") 77 if err != nil { 78 log.Fatal(err) 79 } 80 defer topic.Shutdown(ctx) 81 }