public void ListTopics()
{
// Snippet: ListTopics(string,string,int?,CallSettings)
// Create client
PublisherClient publisherClient = PublisherClient.Create();
// Initialize request argument(s)
string formattedProject = PublisherClient.FormatProjectName("[PROJECT]");
// Make the request
IPagedEnumerable <ListTopicsResponse, Topic> response =
publisherClient.ListTopics(formattedProject);
// Iterate over all response items, lazily performing RPCs as required
foreach (Topic item in response)
{
// Do something with each item
Console.WriteLine(item);
}
// Or iterate over fixed-sized pages, lazily performing RPCs as required
int pageSize = 10;
foreach (FixedSizePage <Topic> page in response.AsPages().WithFixedSize(pageSize))
{
// Do something with each page of items
Console.WriteLine("A page of results:");
foreach (Topic item in page)
{
Console.WriteLine(item);
}
}
// End snippet
}
public void WithFixedSize()
{
string projectId = _fixture.ProjectId;
string pageTokenFromRequest = "";
// Sample: WithFixedSize
PublisherClient client = PublisherClient.Create();
string projectName = PublisherClient.FormatProjectName(projectId);
IPagedEnumerable <ListTopicsResponse, Topic> topics = client.ListTopics(projectName, pageTokenFromRequest);
IEnumerable <FixedSizePage <Topic> > fixedSizePages = topics.AsPages().WithFixedSize(3);
// With fixed size pages, if there are no more resources, there are no more pages.
FixedSizePage <Topic> nextPage = fixedSizePages.FirstOrDefault();
if (nextPage != null)
{
// In a web application, this would be a matter of including the topics in the web page.
foreach (Topic topic in nextPage)
{
Console.WriteLine(topic.Name);
}
// ... and embedding the next page token into a "next page" link.
Console.WriteLine($"Next page token: {nextPage.NextPageToken}");
}
// End sample
}
public IEnumerable <Topic> ListProjectTopics(PublisherClient publisher)
{
// [START list_topics]
string projectName = PublisherClient.FormatProjectName(_projectId);
IEnumerable <Topic> topics = publisher.ListTopics(projectName);
// [END list_topics]
return(topics);
}
public IEnumerable <Subscription> ListSubscriptions(SubscriberClient
subscriber)
{
// [START list_subscriptions]
string projectName = PublisherClient.FormatProjectName(_projectId);
IEnumerable <Subscription> subscriptions =
subscriber.ListSubscriptions(projectName);
// [END list_subscriptions]
return(subscriptions);
}
public void AllResources()
{
string projectId = _fixture.ProjectId;
// Sample: AllResources
PublisherClient client = PublisherClient.Create();
string projectName = PublisherClient.FormatProjectName(projectId);
IPagedEnumerable <ListTopicsResponse, Topic> topics = client.ListTopics(projectName, pageSize: 3);
foreach (Topic topic in topics)
{
Console.WriteLine(topic.Name);
}
// End sample
}
public void ListTopics()
{
string projectId = _fixture.ProjectId;
// Snippet: ListTopics
PublisherClient client = PublisherClient.Create();
// Alternative: use a known project resource name:
// "projects/{PROJECT_ID}"
string projectName = PublisherClient.FormatProjectName(projectId);
foreach (Topic topic in client.ListTopics(projectName))
{
Console.WriteLine(topic.Name);
}
// End snippet
}
public async Task ListTopicsAsync()
{
string projectId = _fixture.ProjectId;
// Snippet: ListTopicsAsync
PublisherClient client = PublisherClient.Create();
// Alternative: use a known project resource name:
// "projects/{PROJECT_ID}"
string projectName = PublisherClient.FormatProjectName(projectId);
IAsyncEnumerable <Topic> topics = client.ListTopicsAsync(projectName);
await topics.ForEachAsync(topic =>
{
Console.WriteLine(topic.Name);
});
// End snippet
}
public void Dispose()
{
var subscriber = SubscriberClient.Create();
var subscriptions = subscriber.ListSubscriptions(SubscriberClient.FormatProjectName(ProjectId))
.Where(sub => SubscriberClient.SubscriptionTemplate.ParseName(sub.Name)[1].StartsWith(TopicPrefix))
.ToList();
foreach (var sub in subscriptions)
{
subscriber.DeleteSubscription(sub.Name);
}
var publisher = PublisherClient.Create();
var topics = publisher.ListTopics(PublisherClient.FormatProjectName(ProjectId))
.Where(topic => PublisherClient.TopicTemplate.ParseName(topic.Name)[1].StartsWith(TopicPrefix))
.ToList();
foreach (var topic in topics)
{
publisher.DeleteTopic(topic.Name);
}
}
public void SingleResponse()
{
string projectId = _fixture.ProjectId;
// Sample: SingleResponse
PublisherClient client = PublisherClient.Create();
string projectName = PublisherClient.FormatProjectName(projectId);
IPagedEnumerable <ListTopicsResponse, Topic> topics = client.ListTopics(projectName, pageSize: 3);
IResponseEnumerable <ListTopicsResponse, Topic> topicPages = topics.AsPages();
// This is just the regular LINQ First() method. The sequence of pages will never be empty,
// but the page may have no resources.
ListTopicsResponse firstPage = topicPages.First();
Console.WriteLine("Topics in response:");
foreach (Topic topic in firstPage.Topics)
{
Console.WriteLine($" {topic.Name}");
}
// If you were processing items in batches, you might wish to store this
// in order to recover from failures. The page token can be passed into the ListTopics method.
Console.WriteLine($"Next page token: {firstPage.NextPageToken}");
// End sample
}
public void Responses()
{
string projectId = _fixture.ProjectId;
// Sample: Responses
PublisherClient client = PublisherClient.Create();
string projectName = PublisherClient.FormatProjectName(projectId);
IPagedEnumerable <ListTopicsResponse, Topic> topics = client.ListTopics(projectName, pageSize: 3);
IResponseEnumerable <ListTopicsResponse, Topic> topicPages = topics.AsPages();
foreach (ListTopicsResponse page in topicPages)
{
Console.WriteLine("Topics in response:");
foreach (Topic topic in page.Topics)
{
Console.WriteLine($" {topic.Name}");
}
// If you were processing items in batches, you might wish to store this
// in order to recover from failures. The page token can be passed into the ListTopics method.
Console.WriteLine($"Next page token: {page.NextPageToken}");
}
// End sample
}
