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Muestra de código

C#

Si deseas obtener información para instalar y usar la biblioteca cliente de Logging, consulta las bibliotecas cliente de Logging.

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

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()}");
    }
}

Go

Si deseas obtener información para instalar y usar la biblioteca cliente de Logging, consulta las bibliotecas cliente de Logging.

import (
	"context"
	"fmt"
	"log"
	"time"

	"cloud.google.com/go/logging"
	"cloud.google.com/go/logging/logadmin"
	"google.golang.org/api/iterator"
)

func getEntries(projectID string) ([]*logging.Entry, error) {
	ctx := context.Background()
	adminClient, err := logadmin.NewClient(ctx, projectID)
	if err != nil {
		log.Fatalf("Failed to create logadmin client: %v", err)
	}
	defer adminClient.Close()

	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"`, projectID, 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

Si deseas obtener información para instalar y usar la biblioteca cliente de Logging, consulta las 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;
import java.util.TimeZone;

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";

    try (Logging logging = LoggingOptions.getDefaultInstance().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 minute to minimize number of API calls
      Calendar calendar = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
      calendar.add(Calendar.MINUTE, -1);
      DateFormat rfc3339 = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'");
      String logFilter =
          "logName=projects/"
              + logging.getOptions().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

Si deseas obtener información para instalar y usar la biblioteca cliente de Logging, consulta las 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

Si deseas obtener información para instalar y usar la biblioteca cliente de Logging, consulta las bibliotecas cliente de Logging.

use Google\Cloud\Logging\LoggingClient;

/**
 * Print the timestamp and entry for the project and logger.
 *
 * @param string $projectId The Google project ID.
 * @param string $loggerName The name of the logger.
 */
function list_entries($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

Si deseas obtener información para instalar y usar la biblioteca cliente de Logging, consulta las 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

Si deseas obtener información para instalar y usar la biblioteca cliente de Logging, consulta las 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

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Muestra de código

C#

Go

Java

Node.js

PHP

Python

Ruby

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