Mostrar las entradas de registro

Demuestra cómo enumerar las entradas de registro.

Páginas de documentación que incluyen esta muestra de código

Para ver la muestra de código usada en contexto, consulta la siguiente documentación:

Muestra de código

C#

Para obtener información sobre cómo instalar y usar la biblioteca cliente de Logging, consulta Bibliotecas cliente de Logging. 

private void ListLogEntries(string logId)
{
    var client = LoggingServiceV2Client.Create();
    LogName logName = new LogName(s_projectId, logId);
    ProjectName projectName = new ProjectName(s_projectId);
    var results = client.ListLogEntries(Enumerable.Repeat(projectName, 1), $"logName={logName.ToString()}",
        "timestamp desc", callSettings: _retryAWhile);
    foreach (var row in results)
    {
        Console.WriteLine($"{row.TextPayload.Trim()}");
    }
}

Comienza a usarlo

Para obtener información sobre cómo instalar y usar la biblioteca cliente de Logging, consulta Bibliotecas cliente de Logging. 

var entries []*logging.Entry
const name = "log-example"
lastHour := time.Now().Add(-1 * time.Hour).Format(time.RFC3339)

iter := adminClient.Entries(ctx,
	// Only get entries from the "log-example" log within the last hour.
	logadmin.Filter(fmt.Sprintf(`logName = "projects/%s/logs/%s" AND timestamp > "%s"`, projID, name, lastHour)),
	// Get most recent entries first.
	logadmin.NewestFirst(),
)

// Fetch the most recent 20 entries.
for len(entries) < 20 {
	entry, err := iter.Next()
	if err == iterator.Done {
		return entries, nil
	}
	if err != nil {
		return nil, err
	}
	entries = append(entries, entry)
}
return entries, nil

Java

Para obtener información sobre cómo instalar y usar la biblioteca cliente de Logging, consulta Bibliotecas cliente de Logging. 

import com.google.api.gax.paging.Page;
import com.google.cloud.logging.LogEntry;
import com.google.cloud.logging.Logging;
import com.google.cloud.logging.Logging.EntryListOption;
import com.google.cloud.logging.LoggingOptions;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;

public class ListLogEntries {

  public static void main(String[] args) throws Exception {
    // TODO(developer): Replace the variable value with valid log name before running the sample
    // or provide it as an argument.
    String logName = args.length > 0 ? args[0] : "test-log";

    LoggingOptions options = LoggingOptions.getDefaultInstance();
    Logging logging = options.getService();

    // When composing a filter, using indexed fields, such as timestamp, resource.type, logName and
    // others can help accelerate the results
    // Full list of indexed fields here:
    // https://cloud.google.com/logging/docs/view/advanced-queries#finding-quickly
    // This sample restrict the results to only last hour to minimize number of API calls
    Calendar calendar = Calendar.getInstance();
    calendar.add(Calendar.HOUR, -1);
    DateFormat rfc3339 = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'");
    String logFilter =
        "logName=projects/"
            + options.getProjectId()
            + "/logs/"
            + logName
            + " AND timestamp>=\""
            + rfc3339.format(calendar.getTime())
            + "\"";

    // List all log entries
    Page<LogEntry> entries = logging.listLogEntries(EntryListOption.filter(logFilter));
    while (entries != null) {
      for (LogEntry logEntry : entries.iterateAll()) {
        System.out.println(logEntry);
      }
      entries = entries.getNextPage();
    }
  }
}

Node.js

Para obtener información sobre cómo instalar y usar la biblioteca cliente de Logging, consulta Bibliotecas cliente de Logging. 

// Imports the Google Cloud client library
const {Logging} = require('@google-cloud/logging');

// Creates a client
const logging = new Logging();

/**
 * TODO(developer): Uncomment the following line to run the code.
 */
// const logName = 'Name of the log from which to list entries, e.g. my-log';

const log = logging.log(logName);

async function printEntryMetadata() {
  // List the most recent entries for a given log
  // See https://googleapis.dev/nodejs/logging/latest/Logging.html#getEntries
  const [entries] = await log.getEntries();
  console.log('Logs:');
  entries.forEach(entry => {
    const metadata = entry.metadata;
    console.log(`${metadata.timestamp}:`, metadata[metadata.payload]);
  });
}
printEntryMetadata();

PHP

Para obtener información sobre cómo instalar y usar la biblioteca cliente de Logging, consulta Bibliotecas cliente de Logging. 

use Google\Cloud\Logging\LoggingClient;

/** Return an iterator for listing log entries.
 *
 * @param string $projectId The Google project ID.
 * @param string $loggerName The name of the logger.
 * @return ItemIterator<Google\Cloud\Logging\Entry>
 */
function list_entries($projectId, $loggerName)
{
    $logging = new LoggingClient(['projectId' => $projectId]);
    $loggerFullName = sprintf('projects/%s/logs/%s', $projectId, $loggerName);
    $oneDayAgo = date(\DateTime::RFC3339, strtotime('-24 hours'));
    $filter = sprintf(
        'logName = "%s" AND timestamp >= "%s"',
        $loggerFullName,
        $oneDayAgo
    );
    $options = [
        'filter' => $filter,
    ];
    $entries = $logging->entries($options);

    // Print the entries
    foreach ($entries as $entry) {
        /* @var $entry \Google\Cloud\Logging\Entry */
        $entryInfo = $entry->info();
        if (isset($entryInfo['textPayload'])) {
            $entryText = $entryInfo['textPayload'];
        } else {
            $entryPayload = [];
            foreach ($entryInfo['jsonPayload'] as $key => $value) {
                $entryPayload[] = "$key: $value";
            }
            $entryText = '{' . implode(', ', $entryPayload) . '}';
        }
        printf("%s : %s" . PHP_EOL, $entryInfo['timestamp'], $entryText);
    }
}

Python

Para obtener información sobre cómo instalar y usar la biblioteca cliente de Logging, consulta Bibliotecas cliente de Logging. 

def list_entries(logger_name):
    """Lists the most recent entries for a given logger."""
    logging_client = logging.Client()
    logger = logging_client.logger(logger_name)

    print("Listing entries for logger {}:".format(logger.name))

    for entry in logger.list_entries():
        timestamp = entry.timestamp.isoformat()
        print("* {}: {}".format(timestamp, entry.payload))

Ruby

Para obtener información sobre cómo instalar y usar la biblioteca cliente de Logging, consulta Bibliotecas cliente de Logging. 

require "google/cloud/logging"

# log_name = "my_log_name"
logging = Google::Cloud::Logging.new
entries = logging.entries filter: "logName:#{log_name}",
                          max:    1000,
                          order:  "timestamp desc"

entries.each do |entry|
  puts "[#{entry.timestamp}] #{entry.log_name} #{entry.payload.inspect}"
end

¿Qué sigue?

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