PostgresConnectionResolver

Helper class that resolves PostgreSQL connection and credential parameters, validates them and generates a connection URI.

Implements: IReferenceable, IConfigurable

Description

The PostgresConnectionResolver class allows you to create a PostgresSQL connection and credential parameters resolver that validates these parameters and generates a connection URI.

Important points

It is able to process multiple connections to PostgreSQL cluster nodes.

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)
database: database name
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

References

*:discovery:*:*:1.0 - (optional) IDiscovery services
*:credential-store:*:*:1.0 - (optional) credential stores to resolve credentials (ICredentialStore)

Fields

_connectionResolver

The connection resolver

protected _connectionResolver: ConnectionResolver

_credentialResolver

The credential resolver

protected _credentialResolver: CredentialResolver

Instance methods

configure

Configures component by passing configuration parameters.

public configure(config: ConfigParams): void

config: ConfigParams - configuration parameters to be set.

resolve

Resolves PostgreSQL config from connection and credential parameters.

public resolve(correlationId: string): Promise<any>

correlationId: string - (optional) transaction id used to trace execution through the call chain.
returns: Promise<any> - resolved connection config or raised error.

setReferences

Sets references to dependent components.

public setReferences(references: IReferences): void

references: IReferences - references to locate the component dependencies.