example_topic_iterator_test.go

Documentation: cloud.google.com/go/pubsub

     1  // Copyright 2016 Google LLC
     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  //      http://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 pubsub_test
    16  
    17  import (
    18  	"context"
    19  	"fmt"
    20  
    21  	"cloud.google.com/go/pubsub"
    22  	"google.golang.org/api/iterator"
    23  )
    24  
    25  func ExampleClient_Topics() {
    26  	ctx := context.Background()
    27  	client, err := pubsub.NewClient(ctx, "project-id")
    28  	if err != nil {
    29  		// TODO: Handle error.
    30  	}
    31  	it := client.Topics(ctx)
    32  	_ = it // TODO: iterate using Next.
    33  }
    34  
    35  func ExampleTopicIterator_Next() {
    36  	ctx := context.Background()
    37  	client, err := pubsub.NewClient(ctx, "project-id")
    38  	if err != nil {
    39  		// TODO: Handle error.
    40  	}
    41  	// List all topics.
    42  	it := client.Topics(ctx)
    43  	for {
    44  		t, err := it.Next()
    45  		if err == iterator.Done {
    46  			break
    47  		}
    48  		if err != nil {
    49  			// TODO: Handle error.
    50  		}
    51  		fmt.Println(t)
    52  	}
    53  }
    54
View as plain text