migratorydata

Classes

	Name
class	migratorydata::MigratoryDataClient This class implements all the necessary operations for connecting to a cluster of one or more MigratoryData servers, subscribing to subjects, getting real-time messages for the subscribed subjects, and publishing real-time messages.
class	migratorydata::MigratoryDataListener The implementation of this interface will handle the messages received from the server for the subscribed subjects as well as various status notifications.
class	migratorydata::MigratoryDataLogListener The implementation of this interface will handle the log messages produced by the library.
class	migratorydata::MigratoryDataMessage Represent a message.

Types

	Name
enum	MigratoryDataLogLevel { LOG_ERROR, LOG_INFO, LOG_DEBUG, LOG_TRACE } This class enumerates the MigratoryData logging levels.
enum	MessageType { SNAPSHOT = 1, UPDATE, RECOVERED, HISTORICAL } Return a string representation of the message.
enum	QoS { STANDARD = 0, GUARANTEED } The quality of service (QoS) levels for MigratoryData messaging.

Types Documentation

enum MigratoryDataLogLevel

Enumerator	Value	Description
LOG_ERROR		The LOG_ERROR level turns on the error logs of the API.
LOG_INFO		The LOG_INFO level turns on the info, warning, and error logs of the API.
LOG_DEBUG		The LOG_DEBUG level turns on the debug, info, warning, and error logs of the API.
LOG_TRACE		The LOG_TRACE level turns on all the logs of the API.

This class enumerates the MigratoryData logging levels.

The available log levels ordered by verbosity are:

• LOG_ERROR (less verbose)
• LOG_INFO
• LOG_DEBUG
• LOG_TRACE (most verbose)

enum MessageType

Enumerator	Value	Description
SNAPSHOT	1	the message from the server is snapshot type
UPDATE		the message from the server is update type
RECOVERED		the message from the server is recovered type
HISTORICAL		the message from the server is historical type

Return a string representation of the message.

enum QoS

Enumerator	Value	Description
STANDARD	0	The QoS.STANDARD should be used for noncritical messages which will not be included in the cache of the MigratoryData cluster. In this way, after a connection recovery, a client will not receive as part of the recovery process the messages with QoS.STANDARD.

Note: This QoS level corresponds to the at-most-once delivery semantics. | | GUARANTEED | | The QoS.GUARANTEED should be used for critical messages which will be included in the cache of the MigratoryData cluster. In this way, after a connection recovery, a client will receive as part of the recovery process the messages with QoS.GUARANTEED.

Note: This QoS level corresponds to the at-least-once delivery semantics. Also, it might correspond to the exactly-once delivery semantics provided that subscribers are responsible for filtering out duplicate receptions, if it at all matters for the application. Typically, a small buffer containing the identifiers of recently-received messages is sufficient for this task. |

The quality of service (QoS) levels for MigratoryData messaging.