Flysystem PDO Database Adapter

PDO database adapter for Flysystem filesystem abstraction. No additional dependencies, only PDO extension required.

Installation

composer require integral/flysystem-pdo-adapter

Database Configuration

At the beginning you have to create a table that will be used to store files.

SQL table schema examples for MySQL, SQLite and PostgreSQL are presented below.

MySQL

CREATE TABLE files (
  id int(11) NOT NULL AUTO_INCREMENT,
  path varchar(255) NOT NULL,
  type enum('file','dir') NOT NULL,
  contents longblob,
  size int(11) NOT NULL DEFAULT 0,
  mimetype varchar(127),
  timestamp int(11) NOT NULL DEFAULT 0,
  PRIMARY KEY (id),
  UNIQUE KEY path_unique (path)
);

SQLite

CREATE TABLE files (
    id INTEGER PRIMARY KEY,
    path TEXT NOT NULL UNIQUE,
    type TEXT NOT NULL,
    contents BLOB,
    size INTEGER NOT NULL DEFAULT 0,
    mimetype TEXT,
    timestamp INTEGER NOT NULL DEFAULT 0
)

PostgreSQL

CREATE TABLE public.files (
  id serial NOT NULL,
  path varchar(255) NOT NULL,
  type varchar(4) NOT NULL,
  contents bytea,
  size integer NOT NULL DEFAULT 0,
  mimetype varchar(127),
  "timestamp" integer NOT NULL DEFAULT 0,
  is_compressed boolean NOT NULL DEFAULT true,
  update_ts timestamp(0) with time zone DEFAULT NOW(),
  CONSTRAINT files_pkey PRIMARY KEY (id),
  CONSTRAINT type_check CHECK (type='dir' or type='file'),
  CONSTRAINT path_unique UNIQUE (path)
);

Usage

Create an adapter by passing a valid PDO object and table name as constructor arguments:

MySQL

// http://php.net/manual/pl/ref.pdo-mysql.connection.php
$pdo = new PDO('mysql:host=hostname;dbname=database_name', 'username', 'password');
$adapter = new PDOAdapter($pdo, 'files');

SQLite

// http://php.net/manual/pl/ref.pdo-sqlite.connection.php
$pdo = new PDO('sqlite:/absolute/path/to/database.sqlite');
$adapter = new PDOAdapter($pdo, 'files');

PostgreSQL

// http://php.net/manual/pl/ref.pdo-pgsql.php
$pdo = new PDO('pgsql:host=localhost;port=5432;dbname=testdb;user=bruce;password=mypass');
$adapter = new PDOAdapter($pdo, 'public.files');

Then simply pass the created adapter to \League\Flysystem\Filesystem:

$filesystem = new Filesystem($adapter);

Done! At this point the $filesystem is ready to use.

Note

This implementation emulates a tree structured filesystem, therefore some of the operations (like renaming or deleting a folder) produce quite a lot of database queries, which may result in a poor performance for some scenarios.