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DynamoDB.php
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<?php
namespace Utopia\Database\Adapter;
use Exception;
use Utopia\Database\Adapter;
use Utopia\Database\Document;
use Utopia\Database\Database;
use Utopia\Database\Query;
use Utopia\Database\Exception as DatabaseException;
use Aws\DynamoDb\Exception\DynamoDbException;
use Aws\DynamoDb\DynamoDbClient as Client;
class DynamoDB extends Adapter
{
// Data types
public const VAR_STRING = 'S';
public const VAR_NUMBER = 'N';
public const VAR_BINARY = 'B';
// Index types
public const SIMPLE_INDEX = 'SIMPLE';
public const COMPOSITE_INDEX = 'COMPOSITE';
protected Client $client;
/**
* @return Client
*
* @throws Exception
*/
protected function getClient(): Client
{
return $this->client;
}
public function __construct(Client $client)
{
$this->client = $client;
}
/**
* Ping Database
*
* DynamoDB is a managed database - If the DynamoDB client is successfully initialized, you can assume the service is accessible.
* @return bool
*/
public function ping(): bool
{
return true;
}
/**
* Create Database
*
* @param string $name
*
* No concept of Database schemas in DynamoDb.
* @return bool
*/
public function create(string $name): bool
{
return true;
}
/**
* Check if database exists
* Optionally check if collection exists in database
*
* @param string $database database name
* @param string $collection (optional) collection name
*
* @return bool
*/
public function exists(string $database, ?string $collection): bool
{
if (!\is_null($collection)) {
$collection = $this->filter($collection);
try {
$this->client->describeTable([
'TableName' => "{$this->getNamespace()}_{$collection}",
]);
} catch (DynamoDbException $e) {
return false;
}
}
return true;
}
/**
* List Databases
*
* No concept of Database schemas in DynamoDb.
* @return array<Document>
*/
public function list(): array
{
return [];
}
/**
* Delete Database
*
* @param string $name
*
* No concept of Database schemas in DynamoDb.
* @return bool
*/
public function delete(string $name): bool
{
return true;
}
/**
* Get DynamoDb Type
*
* @param string $type
*
* @return string
*/
protected function getDynamoDbType(string $type): string
{
if (in_array($type, array(Database::VAR_STRING, Database::VAR_RELATIONSHIP))) {
return DynamoDB::VAR_STRING;
} else if (in_array($type, array(Database::VAR_INTEGER, Database::VAR_FLOAT, Database::VAR_BOOLEAN, Database::VAR_DATETIME))) {
return DynamoDB::VAR_NUMBER;
} else {
throw new DatabaseException('Unknown Type: ' . $type);
}
}
/**
* Create Collection
*
* @param string $name
* @param array<Document> $attributes (optional)
* @param array<Document> $indexes (optional)
* @return bool
*/
public function createCollection(string $name, array $attributes = [], array $indexes = []): bool
{
$tableName = "{$this->getNamespace()}_{$this->filter($name)}";
$attributeDefinitions = [
[
'AttributeName' => '_id',
'AttributeType' => DynamoDB::VAR_NUMBER,
],
[
'AttributeName' => '_uid',
'AttributeType' => DynamoDB::VAR_STRING,
],
[
'AttributeName' => '_createdAt',
'AttributeType' => DynamoDB::VAR_NUMBER,
],
[
'AttributeName' => '_updatedAt',
'AttributeType' => DynamoDB::VAR_NUMBER,
],
[
'AttributeName' => '_permissions',
'AttributeType' => DynamoDB::VAR_STRING,
]
];
$permsAttributeDefinitions = [
[
'AttributeName' => '_id',
'AttributeType' => DynamoDB::VAR_NUMBER,
],
[
'AttributeName' => '_type',
'AttributeType' => DynamoDB::VAR_STRING,
],
[
'AttributeName' => '_permission',
'AttributeType' => DynamoDB::VAR_STRING,
],
[
'AttributeName' => '_document',
'AttributeType' => DynamoDB::VAR_STRING,
]
];
$globalIndexes = [
[
'IndexName' => '_uid',
'KeySchema' => [
[
'AttributeName' => '_uid',
'KeyType' => 'HASH',
],
],
'Projection' => [
'ProjectionType' => 'ALL',
],
],
];
$permsGlobalIndexes = [
[
'IndexName' => "index_{$tableName}_ukey",
'KeySchema' => [
[
'AttributeName' => '_document',
'KeyType' => 'HASH',
],
[
'AttributeName' => '_permission',
'KeyType' => 'RANGE'
]
],
'Projection' => [
'ProjectionType' => 'ALL',
],
],
];
foreach ($attributes as $attribute) {
$attrId = $this->filter($attribute->getId());
$attrType = $this->getDynamoDbType($attribute->getAttribute('type'));
$attributeDef = [
'AttributeName' => $attrId,
'AttributeType' => $attrType,
];
array_push($attributeDefinitions, $attributeDef);
}
foreach ($indexes as $index) {
$indexId = $this->filter($index->getId());
$indexType = $index->getAttribute('type');
$indexAttributes = $index->getAttribute('attributes');
$globalIndex = [
'IndexName' => $indexId,
'Projection' => [
'ProjectionType' => 'ALL',
],
];
$globalIndex['KeySchema'] = [
[
'AttributeName' => $indexAttributes[0],
'KeyType' => 'HASH',
]
];
if ($indexType == DynamoDB::COMPOSITE_INDEX) {
array_push($globalIndex['KeySchema'], [
'AttributeName' => $indexAttributes[1],
'KeyType' => 'RANGE',
]);
}
array_push($globalIndexes, $globalIndex);
}
$params = [
'TableName' => $tableName,
'AttributeDefinitions' => $attributeDefinitions,
'KeySchema' => [
[
'AttributeName' => '_id',
'KeyType' => 'HASH',
],
],
'GlobalSecondaryIndexes' => $globalIndexes,
];
$permsParams = [
'TableName' => "{$tableName}_perms",
'AttributeDefinitions' => $permsAttributeDefinitions,
'KeySchema' => [
[
'AttributeName' => '_id',
'KeyType' => 'HASH',
],
],
'GlobalSecondaryIndexes' => $permsGlobalIndexes,
];
$this->client->createTable($params);
$this->client->createTable($permsParams);
return true;
}
/**
* Delete Collection
*
* @param string $name
*
* @return bool
*/
public function deleteCollection(string $name): bool
{
return true;
}
/**
* Create Attribute
*
* @param string $collection
* @param string $id
* @param string $type
* @param int $size
* @param bool $signed
* @param bool $array
* @return bool
*/
public function createAttribute(string $collection, string $id, string $type, int $size, bool $signed = true, bool $array = false): bool
{
return true;
}
/**
* Update Attribute
*
* @param string $collection
* @param string $id
* @param string $type
* @param int $size
* @param bool $signed
* @param bool $array
*
* @return bool
*/
public function updateAttribute(string $collection, string $id, string $type, int $size, bool $signed = true, bool $array = false): bool
{
return true;
}
/**
* Delete Attribute
*
* @param string $collection
* @param string $id
*
* @return bool
*/
public function deleteAttribute(string $collection, string $id): bool
{
return true;
}
/**
* Rename Attribute
*
* @param string $collection
* @param string $old
* @param string $new
* @return bool
*/
public function renameAttribute(string $collection, string $old, string $new): bool
{
return true;
}
/**
* @param string $collection
* @param string $relatedCollection
* @param string $type
* @param bool $twoWay
* @param string $id
* @param string $twoWayKey
* @return bool
*/
public function createRelationship(string $collection, string $relatedCollection, string $type, bool $twoWay = false, string $id = '', string $twoWayKey = ''): bool
{
return true;
}
/**
* Update Relationship
*
* @param string $collection
* @param string $relatedCollection
* @param string $type
* @param bool $twoWay
* @param string $key
* @param string $twoWayKey
* @param string|null $newKey
* @param string|null $newTwoWayKey
* @return bool
*/
public function updateRelationship(string $collection, string $relatedCollection, string $type, bool $twoWay, string $key, string $twoWayKey, ?string $newKey = null, ?string $newTwoWayKey = null): bool
{
return true;
}
/**
* Delete Relationship
*
* @param string $collection
* @param string $relatedCollection
* @param string $type
* @param bool $twoWay
* @param string $key
* @param string $twoWayKey
* @param string $side
* @return bool
*/
public function deleteRelationship(string $collection, string $relatedCollection, string $type, bool $twoWay, string $key, string $twoWayKey, string $side): bool
{
return true;
}
/**
* Rename Index
*
* @param string $collection
* @param string $old
* @param string $new
* @return bool
*/
public function renameIndex(string $collection, string $old, string $new): bool
{
return true;
}
/**
* Create Index
*
* @param string $collection
* @param string $id
* @param string $type
* @param array<string> $attributes
* @param array<int> $lengths
* @param array<string> $orders
*
* @return bool
*/
public function createIndex(string $collection, string $id, string $type, array $attributes, array $lengths, array $orders): bool
{
return true;
}
/**
* Delete Index
*
* @param string $collection
* @param string $id
*
* @return bool
*/
public function deleteIndex(string $collection, string $id): bool
{
return true;
}
/**
* Get Document
*
* @param string $collection
* @param string $id
* @param array<Query> $queries
* @return Document
*/
public function getDocument(string $collection, string $id, array $queries = []): Document
{
return new Document();
}
/**
* Create Document
*
* @param string $collection
* @param Document $document
*
* @return Document
*/
public function createDocument(string $collection, Document $document): Document
{
return new Document();
}
/**
* Update Document
*
* @param string $collection
* @param Document $document
*
* @return Document
*/
public function updateDocument(string $collection, Document $document): Document
{
return new Document();
}
/**
* Delete Document
*
* @param string $collection
* @param string $id
*
* @return bool
*/
public function deleteDocument(string $collection, string $id): bool
{
return true;
}
/**
* Find Documents
*
* Find data sets using chosen queries
*
* @param string $collection
* @param array<Query> $queries
* @param int|null $limit
* @param int|null $offset
* @param array<string> $orderAttributes
* @param array<string> $orderTypes
* @param array<string, mixed> $cursor
* @param string $cursorDirection
* @param int|null $timeout
*
* @return array<Document>
*/
public function find(string $collection, array $queries = [], ?int $limit = 25, ?int $offset = null, array $orderAttributes = [], array $orderTypes = [], array $cursor = [], string $cursorDirection = Database::CURSOR_AFTER, ?int $timeout = null): array
{
return [];
}
/**
* Sum an attribute
*
* @param string $collection
* @param string $attribute
* @param array<Query> $queries
* @param int|null $max
*
* @return int|float
*/
public function sum(string $collection, string $attribute, array $queries = [], ?int $max = null, ?int $timeout = null): float|int
{
return 0;
}
/**
* Count Documents
*
* @param string $collection
* @param array<Query> $queries
* @param int|null $max
*
* @return int
*/
public function count(string $collection, array $queries = [], ?int $max = null, ?int $timeout = null): int
{
return 0;
}
/**
* Get Collection Size
*
* @param string $collection
* @return int
* @throws DatabaseException
*/
public function getSizeOfCollection(string $collection): int
{
return 0;
}
/**
* Get max STRING limit
*
* @return int
*/
public function getLimitForString(): int
{
return 0;
}
/**
* Get max INT limit
*
* @return int
*/
public function getLimitForInt(): int
{
return 0;
}
/**
* Get maximum attributes limit.
*
* @return int
*/
public function getLimitForAttributes(): int
{
return 0;
}
/**
* Get maximum index limit.
*
* @return int
*/
public function getLimitForIndexes(): int
{
return 0;
}
/**
* Is schemas supported?
*
* @return bool
*/
public function getSupportForSchemas(): bool
{
return true;
}
/**
* Is index supported?
*
* @return bool
*/
public function getSupportForIndex(): bool
{
return true;
}
/**
* Is unique index supported?
*
* @return bool
*/
public function getSupportForUniqueIndex(): bool
{
return true;
}
/**
* Is fulltext index supported?
*
* @return bool
*/
public function getSupportForFulltextIndex(): bool
{
return true;
}
/**
* Is fulltext wildcard supported?
*
* @return bool
*/
public function getSupportForFulltextWildcardIndex(): bool
{
return true;
}
/**
* Does the adapter handle casting?
*
* @return bool
*/
public function getSupportForCasting(): bool
{
return true;
}
/**
* Does the adapter handle array Contains?
*
* @return bool
*/
public function getSupportForQueryContains(): bool
{
return true;
}
/**
* Are timeouts supported?
*
* @return bool
*/
public function getSupportForTimeouts(): bool
{
return true;
}
/**
* Are relationships supported?
*
* @return bool
*/
public function getSupportForRelationships(): bool
{
return true;
}
/**
* Get current attribute count from collection document
*
* @param Document $collection
* @return int
*/
public function getCountOfAttributes(Document $collection): int
{
return 0;
}
/**
* Get current index count from collection document
*
* @param Document $collection
* @return int
*/
public function getCountOfIndexes(Document $collection): int
{
return 0;
}
/**
* Returns number of attributes used by default.
*
* @return int
*/
public static function getCountOfDefaultAttributes(): int
{
return 0;
}
/**
* Returns number of indexes used by default.
*
* @return int
*/
public static function getCountOfDefaultIndexes(): int
{
return 0;
}
/**
* Get maximum width, in bytes, allowed for a SQL row
* Return 0 when no restrictions apply
*
* @return int
*/
public static function getDocumentSizeLimit(): int
{
return 0;
}
/**
* Estimate maximum number of bytes required to store a document in $collection.
* Byte requirement varies based on column type and size.
* Needed to satisfy MariaDB/MySQL row width limit.
* Return 0 when no restrictions apply to row width
*
* @param Document $collection
* @return int
*/
public function getAttributeWidth(Document $collection): int
{
return 0;
}
/**
* Get list of keywords that cannot be used
*
* @return array<string>
*/
public function getKeywords(): array
{
return [];
}
/**
* Get an attribute projection given a list of selected attributes
*
* @param array<string> $selections
* @param string $prefix
* @return mixed
*/
protected function getAttributeProjection(array $selections, string $prefix = ''): mixed
{
return false;
}
/**
* Increase and Decrease Attribute Value
*
* @param string $collection
* @param string $id
* @param string $attribute
* @param int|float $value
* @param int|float|null $min
* @param int|float|null $max
* @return bool
* @throws Exception
*/
public function increaseDocumentAttribute(string $collection, string $id, string $attribute, int|float $value, int|float|null $min = null, int|float|null $max = null): bool
{
return true;
}
/**
* @return int
*/
public function getMaxIndexLength(): int
{
return 0;
}
}