Mostrar canales

Enumera todos los recursos de canales de transmisión en vivo de una ubicación.

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Para obtener documentación detallada en la que se incluye esta muestra de código, consulta lo siguiente:

Cómo crear y administrar canales

Muestra de código

C#

Si quieres obtener información para instalar y usar la biblioteca cliente de la API de Live Stream, consulta Bibliotecas cliente de la API de Live Stream. Para obtener más información, consulta la documentación de referencia de la API de C# para la transmisión en vivo.

Para autenticarte en la API de Live Stream, configura las credenciales predeterminadas de la aplicación. Si deseas obtener más información, consulta Configura la autenticación para un entorno de desarrollo local.

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using Google.Api.Gax;
using Google.Api.Gax.ResourceNames;
using Google.Cloud.Video.LiveStream.V1;
using System.Collections.Generic;
using System.Linq;

public class ListChannelsSample
{
    public IList<Channel> ListChannels(
        string projectId, string regionId)
    {
        // Create the client.
        LivestreamServiceClient client = LivestreamServiceClient.Create();

        ListChannelsRequest request = new ListChannelsRequest
        {
            ParentAsLocationName = LocationName.FromProjectLocation(projectId, regionId)
        };

        // Make the request.
        PagedEnumerable<ListChannelsResponse, Channel> response = client.ListChannels(request);

        // The returned sequence will lazily perform RPCs as it's being iterated over.
        return response.ToList();
    }
}

Go

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import (
	"context"
	"fmt"
	"io"

	"google.golang.org/api/iterator"

	livestream "cloud.google.com/go/video/livestream/apiv1"
	"cloud.google.com/go/video/livestream/apiv1/livestreampb"
)

// listChannels lists all channels for a given location.
func listChannels(w io.Writer, projectID, location string) error {
	// projectID := "my-project-id"
	// location := "us-central1"
	ctx := context.Background()
	client, err := livestream.NewClient(ctx)
	if err != nil {
		return fmt.Errorf("NewClient: %w", err)
	}
	defer client.Close()

	req := &livestreampb.ListChannelsRequest{
		Parent: fmt.Sprintf("projects/%s/locations/%s", projectID, location),
	}

	it := client.ListChannels(ctx, req)
	fmt.Fprintln(w, "Channels:")

	for {
		response, err := it.Next()
		if err == iterator.Done {
			break
		}
		if err != nil {
			return fmt.Errorf("ListChannels: %w", err)
		}
		fmt.Fprintln(w, response.GetName())
	}
	return nil
}

Java

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import com.google.cloud.video.livestream.v1.Channel;
import com.google.cloud.video.livestream.v1.ListChannelsRequest;
import com.google.cloud.video.livestream.v1.LivestreamServiceClient;
import com.google.cloud.video.livestream.v1.LocationName;
import java.io.IOException;

public class ListChannels {

  public static void main(String[] args) throws Exception {
    // TODO(developer): Replace these variables before running the sample.
    String projectId = "my-project-id";
    String location = "us-central1";

    listChannels(projectId, location);
  }

  public static void listChannels(String projectId, String location) throws IOException {
    // Initialize client that will be used to send requests. This client only needs to be created
    // once, and can be reused for multiple requests. In this example, try-with-resources is used
    // which automatically calls close() on the client to clean up resources.
    try (LivestreamServiceClient livestreamServiceClient = LivestreamServiceClient.create()) {
      var listChannelsRequest =
          ListChannelsRequest.newBuilder()
              .setParent(LocationName.of(projectId, location).toString())
              .build();

      LivestreamServiceClient.ListChannelsPagedResponse response =
          livestreamServiceClient.listChannels(listChannelsRequest);
      System.out.println("Channels:");

      for (Channel channel : response.iterateAll()) {
        System.out.println(channel.getName());
      }
    }
  }
}

Node.js

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/**
 * TODO(developer): Uncomment these variables before running the sample.
 */
// projectId = 'my-project-id';
// location = 'us-central1';

// Imports the Livestream library
const {LivestreamServiceClient} = require('@google-cloud/livestream').v1;

// Instantiates a client
const livestreamServiceClient = new LivestreamServiceClient();

async function listChannels() {
  const iterable = await livestreamServiceClient.listChannelsAsync({
    parent: livestreamServiceClient.locationPath(projectId, location),
  });
  console.info('Channels:');
  for await (const response of iterable) {
    console.log(response.name);
  }
}

listChannels();

PHP

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use Google\Cloud\Video\LiveStream\V1\Client\LivestreamServiceClient;
use Google\Cloud\Video\LiveStream\V1\ListChannelsRequest;

/**
 * Lists the channels for a given location.
 *
 * @param string  $callingProjectId   The project ID to run the API call under
 * @param string  $location           The location of the channels
 */
function list_channels(
    string $callingProjectId,
    string $location
): void {
    // Instantiate a client.
    $livestreamClient = new LivestreamServiceClient();
    $parent = $livestreamClient->locationName($callingProjectId, $location);
    $request = (new ListChannelsRequest())
        ->setParent($parent);

    $response = $livestreamClient->listChannels($request);
    // Print the channel list.
    $channels = $response->iterateAllElements();
    print('Channels:' . PHP_EOL);
    foreach ($channels as $channel) {
        printf('%s' . PHP_EOL, $channel->getName());
    }
}

Python

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import argparse

from google.cloud.video.live_stream_v1.services.livestream_service import (
    LivestreamServiceClient,
    pagers,
)

def list_channels(project_id: str, location: str) -> pagers.ListChannelsPager:
    """Lists all channels in a location.
    Args:
        project_id: The GCP project ID.
        location: The location of the channels."""

    client = LivestreamServiceClient()

    parent = f"projects/{project_id}/locations/{location}"
    page_result = client.list_channels(parent=parent)
    print("Channels:")

    responses = []
    for response in page_result:
        print(response.name)
        responses.append(response)

    return responses

Ruby

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require "google/cloud/video/live_stream"

##
# List the channels
#
# @param project_id [String] Your Google Cloud project (e.g. "my-project")
# @param location [String] The location (e.g. "us-central1")
#
def list_channels project_id:, location:
  # Create a Live Stream client.
  client = Google::Cloud::Video::LiveStream.livestream_service

  # Build the resource name of the parent.
  parent = client.location_path project: project_id, location: location

  # Get the list of channels.
  response = client.list_channels parent: parent

  puts "Channels:"
  # Print out all channels.
  response.each do |channel|
    puts channel.name
  end
end

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