MqttConnectionResolver

Implements: IReferenceable, IConfigurable

Description

The MqttConnectionResolver class allows you to resolve MQTT connections and credential parameters, validate them, and generate connection options.

Configuration parameters

• connection(s):
  • discovery_key: (optional) key to retrieve the connection from IDiscovery
  • host: host name or IP address
  • port: port number
  • 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

Fields

Instance methods

compose

Composes MQTT connection options from connection and credential parameters.

public compose(correlationId: string, connections: ConnectionParams[], credential: CredentialParams): Promise<any>

• correlationId: string - (optional) transaction id used to trace execution through the call chain.
• connections: ConnectionParams[] - connection parameters
• credential: CredentialParams - credential parameters
• returns: Promise<any> - resolved MQTT connection options

configure

Configures the component by passing its configuration parameters.

public configure(config: ConfigParams): void

• config: ConfigParams - configuration parameters to be set.

resolve

Resolves MQTT connection options 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 MQTT connection options.

setReferences

Sets references to dependent components.

public setReferences(references: IReferences): void

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