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Cómo mostrar una lista de eventos de un canal

Muestra una lista de todos los eventos de un canal para un recurso de canal de transmisión en vivo.

Explora más

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

Cómo crear y administrar eventos del canal

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# de la API de Live Stream.

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.


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

public class ListChannelEventsSample
{
    public IList<Event> ListChannelEvents(
        string projectId, string regionId, string channelId)
    {
        // Create the client.
        LivestreamServiceClient client = LivestreamServiceClient.Create();

        ListEventsRequest request = new ListEventsRequest
        {
            ParentAsChannelName = ChannelName.FromProjectLocationChannel(projectId, regionId, channelId)
        };

        // Make the request.
        PagedEnumerable<ListEventsResponse, Event> response = client.ListEvents(request);

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

Go

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"
)

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

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

	it := client.ListEvents(ctx, req)
	fmt.Fprintln(w, "Channel events:")

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

Java


import com.google.cloud.video.livestream.v1.ChannelName;
import com.google.cloud.video.livestream.v1.Event;
import com.google.cloud.video.livestream.v1.ListEventsRequest;
import com.google.cloud.video.livestream.v1.LivestreamServiceClient;
import java.io.IOException;

public class ListChannelEvents {

  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";
    String channelId = "my-channel-id";

    listChannelEvents(projectId, location, channelId);
  }

  public static void listChannelEvents(String projectId, String location, String channelId)
      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 listEventsRequest =
          ListEventsRequest.newBuilder()
              .setParent(ChannelName.of(projectId, location, channelId).toString())
              .build();

      LivestreamServiceClient.ListEventsPagedResponse response =
          livestreamServiceClient.listEvents(listEventsRequest);
      System.out.println("Channel events:");

      for (Event event : response.iterateAll()) {
        System.out.println(event.getName());
      }
    }
  }
}

Node.js

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

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

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

async function listChannelEvents() {
  const iterable = await livestreamServiceClient.listEventsAsync({
    parent: livestreamServiceClient.channelPath(
      projectId,
      location,
      channelId
    ),
  });
  console.info('Channel events:');
  for await (const response of iterable) {
    console.log(response.name);
  }
}

listChannelEvents();

PHP

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

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

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

Python


import argparse

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


def list_channel_events(
    project_id: str, location: str, channel_id: str
) -> pagers.ListEventsPager:
    """Lists all events for a channel.
    Args:
        project_id: The GCP project ID.
        location: The location of the channel.
        channel_id: The user-defined channel ID."""

    client = LivestreamServiceClient()

    parent = f"projects/{project_id}/locations/{location}/channels/{channel_id}"
    page_result = client.list_events(parent=parent)
    print("Events:")

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

    return responses

Ruby

require "google/cloud/video/live_stream"

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

  # Build the resource name of the parent.
  parent = client.channel_path project: project_id, location: location, channel: channel_id

  # Get the list of channel events.
  response = client.list_events parent: parent

  puts "Channel events:"
  # Print out all channel events.
  response.each do |event|
    puts event.name
  end
end

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