הגדר איסוף אשפה

import (
	"context"
	"fmt"
	"io"
	"time"

	"cloud.google.com/go/bigtable"
)

func createFamilyGCMaxAge(w io.Writer, projectID, instanceID string, tableName string) error {
	// projectID := "my-project-id"
	// instanceID := "my-instance-id"
	// tableName := "my-table-name"

	ctx := context.Background()

	adminClient, err := bigtable.NewAdminClient(ctx, projectID, instanceID)
	if err != nil {
		return fmt.Errorf("bigtable.NewAdminClient: %w", err)
	}
	defer adminClient.Close()

	columnFamilyName := "cf1"
	if err := adminClient.CreateColumnFamily(ctx, tableName, columnFamilyName); err != nil {
		return fmt.Errorf("CreateColumnFamily(%s): %w", columnFamilyName, err)
	}

	// Set a garbage collection policy of 5 days.
	maxAge := time.Hour * 24 * 5
	policy := bigtable.MaxAgePolicy(maxAge)
	if err := adminClient.SetGCPolicy(ctx, tableName, columnFamilyName, policy); err != nil {
		return fmt.Errorf("SetGCPolicy(%s): %w", policy, err)
	}

	fmt.Fprintf(w, "created column family %s with policy: %v\n", columnFamilyName, policy)
	return nil
}

// Creates a column family with GC policy : maximum age
// where age = current time minus cell timestamp

// Defines the GC rule to retain data with max age of 5 days.
GcRule maxAgeRule = GcRuleBuilder.maxAge(Duration.ofDays(5));

// Creates column family with given GC rule.
try {
  String tableName =
      "projects/" + projectId + "/instances/" + instanceId + "/tables/" + tableId;
  ModifyColumnFamiliesRequest request =
      ModifyColumnFamiliesRequest.newBuilder()
          .setName(tableName)
          .addModifications(
              ModifyColumnFamiliesRequest.Modification.newBuilder()
                  .setId(COLUMN_FAMILY_1)
                  .setCreate(ColumnFamily.newBuilder().setGcRule(maxAgeRule)))
          .build();
  adminClient.modifyColumnFamilies(request);
  System.out.println("Created column family: " + COLUMN_FAMILY_1);
} catch (AlreadyExistsException e) {
  System.err.println(
      "Failed to create column family with rule, already exists: " + e.getMessage());
}

print("Creating column family cf1 with with MaxAge GC Rule...")
# Create a column family with GC policy : maximum age
# where age = current time minus cell timestamp

# Define the GC rule to retain data with max age of 5 days
max_age_rule = column_family.MaxAgeGCRule(datetime.timedelta(days=5))

column_family1 = table.column_family("cf1", max_age_rule)
column_family1.create()
print("Created column family cf1 with MaxAge GC Rule.")

// Create a column family with GC policy : maximum age
// where age = current time minus cell timestamp
// Initialize request argument(s).
// Define the GC rule to retain data with max age of 5 days
GcRule MaxAgeRule = new GcRule { MaxAge = Duration.FromTimeSpan(TimeSpan.FromDays(5.0)) };

// Column family to create
ColumnFamily columnFamily = new ColumnFamily { GcRule = MaxAgeRule };

TableName tableName = new TableName(projectId, instanceId, tableId);

// Modification to create column family
ModifyColumnFamiliesRequest.Types.Modification modification = new ModifyColumnFamiliesRequest.Types.Modification
{
    Create = columnFamily,
    Id = "cf1"
};

ModifyColumnFamiliesRequest request = new ModifyColumnFamiliesRequest
{
    TableName = tableName,
    Modifications = { modification }
};
try
{
    // Make the request
    Table response = bigtableTableAdminClient.ModifyColumnFamilies(request);
    Console.WriteLine("Created column family");
    // Print table information.
    GetTable(tableId);
}
catch (Exception ex)
{
    Console.WriteLine($"Error creating column family {ex.Message}");
}

namespace cbt = ::google::cloud::bigtable;
namespace cbta = ::google::cloud::bigtable_admin;
using ::google::bigtable::admin::v2::ModifyColumnFamiliesRequest;
using ::google::cloud::StatusOr;
[](cbta::BigtableTableAdminClient admin, std::string const& project_id,
   std::string const& instance_id, std::string const& table_id,
   std::string const& family_name) {
  std::string table_name = cbt::TableName(project_id, instance_id, table_id);
  auto constexpr kSecondsPerDay =
      std::chrono::seconds(std::chrono::hours(24)).count();

  ModifyColumnFamiliesRequest::Modification mod;
  mod.set_id(family_name);
  mod.mutable_create()->mutable_gc_rule()->mutable_max_age()->set_seconds(
      5 * kSecondsPerDay);

  StatusOr<google::bigtable::admin::v2::Table> schema =
      admin.ModifyColumnFamilies(table_name, {std::move(mod)});

  if (!schema) throw std::move(schema).status();
  std::cout << "Schema modified to: " << schema->DebugString() << "\n";
}

// Create a column family with GC policy : maximum age
// where age = current time minus cell timestamp

// Define the GC rule to retain data with max age of 5 days
const maxAgeRule = GcRuleBuilder.rule({
  maxAge: {
    // Value must be atleast 1 millisecond
    seconds: 60 * 60 * 24 * 5,
    nanos: 0,
  },
});
let [family] = await adminClient.modifyColumnFamilies({
  name: table.name,
  modifications: [
    {
      id: 'cf1',
      create: {
        gcRule: maxAgeRule,
      },
    },
  ],
});
console.log(`Created column family ${family.name}`);

use Google\Cloud\Bigtable\Admin\V2\Client\BigtableTableAdminClient;
use Google\Cloud\Bigtable\Admin\V2\ColumnFamily;
use Google\Cloud\Bigtable\Admin\V2\GcRule;
use Google\Cloud\Bigtable\Admin\V2\ModifyColumnFamiliesRequest;
use Google\Cloud\Bigtable\Admin\V2\ModifyColumnFamiliesRequest\Modification;
use Google\Protobuf\Duration;

/**
 * Create a new column family with a max age GC rule
 *
 * @param string $projectId The Google Cloud project ID
 * @param string $instanceId The ID of the Bigtable instance where the table resides
 * @param string $tableId The ID of the table in which the rule needs to be created
 */
function create_family_gc_max_age(
    string $projectId,
    string $instanceId,
    string $tableId
): void {
    $tableAdminClient = new BigtableTableAdminClient();

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

    print('Creating column family cf1 with MaxAge GC Rule...' . PHP_EOL);
    // Create a column family with GC policy : maximum age
    // where age = current time minus cell timestamp

    $columnFamily1 = new ColumnFamily();
    $duration = new Duration();
    $duration->setSeconds(3600 * 24 * 5);
    $MaxAgeRule = (new GcRule())->setMaxAge($duration);
    $columnFamily1->setGcRule($MaxAgeRule);

    $columnModification = new Modification();
    $columnModification->setId('cf1');
    $columnModification->setCreate($columnFamily1);
    $modifyColumnFamiliesRequest = (new ModifyColumnFamiliesRequest())
        ->setName($tableName)
        ->setModifications([$columnModification]);
    $tableAdminClient->modifyColumnFamilies($modifyColumnFamiliesRequest);
    print('Created column family cf1 with MaxAge GC Rule.' . PHP_EOL);
}

# Create a column family with GC policy : maximum age
# where age = current time minus cell timestamp
# NOTE: Age value must be atleast 1 millisecond
max_age_rule = Google::Cloud::Bigtable::GcRule.max_age 60 * 60 * 24 * 5
column_families = table.column_families do |cfs|
  cfs.add "cf1", gc_rule: max_age_rule
end
family = column_families["cf1"]

import (
	"context"
	"fmt"
	"io"

	"cloud.google.com/go/bigtable"
)

func createFamilyGCMaxVersions(w io.Writer, projectID, instanceID string, tableName string) error {
	// projectID := "my-project-id"
	// instanceID := "my-instance-id"
	// tableName := "my-table-name"

	ctx := context.Background()

	adminClient, err := bigtable.NewAdminClient(ctx, projectID, instanceID)
	if err != nil {
		return fmt.Errorf("bigtable.NewAdminClient: %w", err)
	}
	defer adminClient.Close()

	columnFamilyName := "cf2"
	if err := adminClient.CreateColumnFamily(ctx, tableName, columnFamilyName); err != nil {
		return fmt.Errorf("CreateColumnFamily(%s): %w", columnFamilyName, err)
	}

	// Set a garbage collection policy of 2 versions.
	policy := bigtable.MaxVersionsPolicy(2)
	if err := adminClient.SetGCPolicy(ctx, tableName, columnFamilyName, policy); err != nil {
		return fmt.Errorf("SetGCPolicy(%s): %w", policy, err)
	}

	fmt.Fprintf(w, "created column family %s with policy: %v\n", columnFamilyName, policy)
	return nil
}

// Creates a column family with GC policy : most recent N versions
// where 1 = most recent version

// Defines the GC policy to retain only the most recent 2 versions.
GcRule versionRule = GcRuleBuilder.maxVersions(2);

// Creates column family with given GC rule.
try {
  String tableName =
      "projects/" + projectId + "/instances/" + instanceId + "/tables/" + tableId;
  ModifyColumnFamiliesRequest request =
      ModifyColumnFamiliesRequest.newBuilder()
          .setName(tableName)
          .addModifications(
              ModifyColumnFamiliesRequest.Modification.newBuilder()
                  .setId(COLUMN_FAMILY_2)
                  .setCreate(ColumnFamily.newBuilder().setGcRule(versionRule)))
          .build();
  adminClient.modifyColumnFamilies(request);
  System.out.println("Created column family: " + COLUMN_FAMILY_2);
} catch (AlreadyExistsException e) {
  System.err.println(
      "Failed to create column family with rule, already exists: " + e.getMessage());
}

print("Creating column family cf2 with max versions GC rule...")
# Create a column family with GC policy : most recent N versions
# where 1 = most recent version

# Define the GC policy to retain only the most recent 2 versions
max_versions_rule = column_family.MaxVersionsGCRule(2)

column_family2 = table.column_family("cf2", max_versions_rule)
column_family2.create()
print("Created column family cf2 with Max Versions GC Rule.")

// Create a column family with GC policy : most recent N versions
// where 1 = most recent version
// Initialize request argument(s).
// Define the GC policy to retain only the most recent 2 versions
GcRule maxVersionsRule = new GcRule { MaxNumVersions = 2 };

// Column family to create
ColumnFamily columnFamily = new ColumnFamily { GcRule = maxVersionsRule