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Esempio di codice

C++

Per scoprire come installare e utilizzare la libreria client per Bigtable, consulta la sezione Librerie client Bigtable.

Per eseguire l'autenticazione in Bigtable, configura le Credenziali predefinite dell'applicazione. Per ulteriori informazioni, consulta Configura l'autenticazione per un ambiente di sviluppo locale.

struct InsertOrUpdate {
  std::string column_family;
  std::string column;
  std::string value;
};
namespace cbt = ::google::cloud::bigtable;
[](cbt::Table table, std::string const& key,
   std::vector<InsertOrUpdate> const& inserts) {
  cbt::SingleRowMutation mutation(key);
  for (auto const& mut : inserts) {
    mutation.emplace_back(
        cbt::SetCell(mut.column_family, mut.column, mut.value));
  }
  google::cloud::Status status = table.Apply(std::move(mutation));
  if (!status.ok()) throw std::runtime_error(status.message());
  std::cout << "Row successfully updated\n";
}

PHP

Per scoprire come installare e utilizzare la libreria client per Bigtable, consulta la sezione Librerie client Bigtable.

Per eseguire l'autenticazione in Bigtable, configura le Credenziali predefinite dell'applicazione. Per ulteriori informazioni, consulta Configura l'autenticazione per un ambiente di sviluppo locale.

use Google\ApiCore\ApiException;
use Google\Cloud\Bigtable\Admin\V2\Client\BigtableInstanceAdminClient;
use Google\Cloud\Bigtable\Admin\V2\Client\BigtableTableAdminClient;
use Google\Cloud\Bigtable\Admin\V2\ColumnFamily;
use Google\Cloud\Bigtable\Admin\V2\CreateTableRequest;
use Google\Cloud\Bigtable\Admin\V2\ModifyColumnFamiliesRequest;
use Google\Cloud\Bigtable\Admin\V2\ModifyColumnFamiliesRequest\Modification;
use Google\Cloud\Bigtable\Admin\V2\Table as TableClass;
use Google\Cloud\Bigtable\BigtableClient;

/**
 * Perform insert/update operations on a Bigtable
 *
 * @param string $projectId The Google Cloud project ID
 * @param string $instanceId The ID of the Bigtable instance
 * @param string $tableId The ID of the table on which we intend to insert/update rows
 */
function insert_update_rows(
    string $projectId,
    string $instanceId = 'quickstart-instance-php',
    string $tableId = 'bigtable-php-table'
): void {
    $dataClient = new BigtableClient([
        'projectId' => $projectId,
    ]);

    $instanceAdminClient = new BigtableInstanceAdminClient();
    $tableAdminClient = new BigtableTableAdminClient();

    $instanceName = $instanceAdminClient->instanceName($projectId, $instanceId);
    $tableName = $tableAdminClient->tableName($projectId, $instanceId, $tableId);

    $table = new TableClass();

    printf('Creating table %s' . PHP_EOL, $tableId);

    try {
        $createTableRequest = (new CreateTableRequest())
            ->setParent($instanceName)
            ->setTableId($tableId)
            ->setTable($table);
        $tableAdminClient->createtable($createTableRequest);
    } catch (ApiException $e) {
        if ($e->getStatus() === 'ALREADY_EXISTS') {
            printf('Table %s already exists.' . PHP_EOL, $tableId);
            return;
        }
        throw $e;
    }

    printf('Table %s created' . PHP_EOL, $tableId);

    $table = $dataClient->table($instanceId, $tableId);
    $columnFamilyId = 'cf1';

    printf('Creating column family %s' . PHP_EOL, $columnFamilyId);

    $columnFamily4 = new ColumnFamily();
    $columnModification = new Modification();
    $columnModification->setId($columnFamilyId);
    $columnModification->setCreate($columnFamily4);
    $modifyColumnFamiliesRequest = (new ModifyColumnFamiliesRequest())
        ->setName($tableName)
        ->setModifications([$columnModification]);
    $tableAdminClient->modifyColumnFamilies($modifyColumnFamiliesRequest);

    printf('Inserting data in the table' . PHP_EOL);

    $insertRows = [
        'rk5' => [
            'cf1' => [
                'cq5' => [
                    'value' => 'Value5',
                    'timeStamp' => time_in_microseconds()
                ]
            ]
        ]
    ];
    $table->upsert($insertRows);

    printf('Data inserted successfully!' . PHP_EOL);
}

function time_in_microseconds(): float
{
    $mt = microtime(true);
    $mt = sprintf('%.03f', $mt);
    return (float) $mt * 1000000;
}

Passaggi successivi

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