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package factories |
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import ( |
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"fmt" |
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"github.com/Permify/permify/internal/config" |
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"github.com/Permify/permify/internal/storage/memory/migrations" |
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"github.com/Permify/permify/internal/storage/postgres/utils" |
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"github.com/Permify/permify/pkg/database" |
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IMDatabase "github.com/Permify/permify/pkg/database/memory" |
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PQDatabase "github.com/Permify/permify/pkg/database/postgres" |
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) |
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// DatabaseFactory is a factory function that creates a database instance according to the given configuration. |
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// It supports different types of databases, such as PostgreSQL and in-memory databases. |
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// |
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// conf: the configuration object containing the necessary information to create a database connection. |
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// |
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// It should have the following properties: |
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// - Engine: the type of the database, e.g., POSTGRES or MEMORY |
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// - URI: the connection string for the database (only required for some database engines, e.g., POSTGRES) |
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// - MaxOpenConnections: the maximum number of open connections to the database |
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// - MaxIdleConnections: the maximum number of idle connections in the connection pool |
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// - MaxConnectionIdleTime: the maximum amount of time a connection can be idle before being closed |
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// - MaxConnectionLifetime: the maximum amount of time a connection can be reused before being closed |
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// - WatchBufferSize: specifies the buffer size for database watch operations, impacting how many changes can be queued |
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// - MaxDataPerWrite: sets the maximum amount of data per write operation to the database |
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// - MaxRetries: defines the maximum number of retries for database operations in case of failure |
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// |
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// Returns a database.Database instance if the database connection is successfully created, or an error if the |
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// creation fails or the specified database engine is unsupported. |
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func DatabaseFactory(conf config.Database) (db database.Database, err error) { |
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switch conf.Engine { |
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case database.POSTGRES.String(): |
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if conf.URI == "" { |
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db, err = PQDatabase.NewWithSeparateURIs(conf.Writer.URI, conf.Reader.URI, |
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PQDatabase.MaxOpenConnections(conf.MaxOpenConnections), |
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PQDatabase.MaxIdleConnections(conf.MaxIdleConnections), |
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PQDatabase.MaxConnectionIdleTime(conf.MaxConnectionIdleTime), |
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PQDatabase.MaxConnectionLifeTime(conf.MaxConnectionLifetime), |
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PQDatabase.WatchBufferSize(conf.WatchBufferSize), |
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PQDatabase.MaxDataPerWrite(conf.MaxDataPerWrite), |
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PQDatabase.MaxRetries(conf.MaxRetries), |
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) |
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if err != nil { |
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return nil, err |
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} |
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} else { |
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db, err = PQDatabase.New(conf.URI, |
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PQDatabase.MaxOpenConnections(conf.MaxOpenConnections), |
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PQDatabase.MaxIdleConnections(conf.MaxIdleConnections), |
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PQDatabase.MaxConnectionIdleTime(conf.MaxConnectionIdleTime), |
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PQDatabase.MaxConnectionLifeTime(conf.MaxConnectionLifetime), |
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PQDatabase.WatchBufferSize(conf.WatchBufferSize), |
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PQDatabase.MaxDataPerWrite(conf.MaxDataPerWrite), |
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PQDatabase.MaxRetries(conf.MaxRetries), |
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) |
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if err != nil { |
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return nil, err |
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} |
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} |
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// check postgres version |
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_, err = utils.EnsureDBVersion(db.(*PQDatabase.Postgres).ReadPool) |
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if err != nil { |
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return nil, err |
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} |
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return |
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case database.MEMORY.String(): |
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db, err = IMDatabase.New(migrations.Schema) |
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if err != nil { |
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return nil, err |
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} |
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return |
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default: |
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return nil, fmt.Errorf("%s connection is unsupported", conf.Engine) |
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} |
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} |
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Permify /
permify
