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  }