Implements: IReferenceable, IConfigurable, IOpenable

Description

The MySqlConnection class allows you to create a connection to a MySQL database using a plain driver.

Configuration parameters

connection(s):

• discovery_key: (optional) key to retrieve the connection from IDiscovery
• host: host name or IP address
• port: port number (default: 27017)
• uri: resource URI or connection string with all parameters in it

credential(s):

• store_key: (optional) key to retrieve the credentials from ICredentialStore
• username: username
• password: user’s password

options:

• connect_timeout: (optional) number of milliseconds to wait before timing out when connecting a new client (default: 0)
• idle_timeout: (optional) number of milliseconds a client must sit idle in the pool and not be checked out (default: 10000)
• max_pool_size: (optional) maximum number of clients the pool should contain (default: 10)

References

• *:logger:*:*:1.0 - (optional) ILogger components to pass log messages
• *:discovery:*:*:1.0 - (optional) IDiscovery services
• *:credential-store:*:*:1.0 (optional) credential stores to resolve credentials

Fields

_connection

The MySQL connection pool object.

protected _connection: any

_connectionResolver

The connection resolver.

protected _connectionResolver: MySqlConnectionResolver

_databaseName

The MySQL database name.

protected _databaseName: string

_logger

The logger.

protected _logger: CompositeLogger

_options

The configuration options.

protected _options: ConfigParams

Instance methods

close

Closes the component and frees used resources.

public close(context: IContext): Promise<void>

• context: IContext - (optional) a context to trace execution through a call chain.

configure

Configures the component by passing configuration parameters.

public configure(config: ConfigParams): void

• config: ConfigParams - configuration parameters to be set.

getConnection

Gets the connection.

public getConnection(): any

• returns: any - connection to a MySQL database

getDatabaseName

Gets the database name

public getDatabaseName(): string

• returns: string - database name

isOpen

Checks if the component is opened.

public isOpen(): boolean

• returns: boolean - True if the component has been opened and False otherwise.

open

Opens the component.

public open(context: IContext): Promise<void>

• context: IContext - (optional) a context to trace execution through a call chain.

setReferences

Sets references to dependent components.

public setReferences(references: IReferences): void

• references: IReferences - references to locate the component dependencies.