Class Scheduler

Scheduler performs session connection maintenance according to the specified schedule for session activities. It monitors whenever criteria to log a particular session either on or off is triggered and automatically executes appropriate action. Scheduler implements IDisposable interface to provide users with the ability to shutdown scheduling services by single action. Supporting IDisposable interface also gives the opportunity to combine Scheduler with built-in language statements like using statement in C# and make scheduling more error-resistant.

Inheritance

object

Scheduler

Implements

IDisposable

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: OnixS.Fix.Scheduling

Assembly: OnixS.Fix.Engine.dll

Syntax

public class Scheduler : IDisposable

Constructors

Scheduler()

Initializes Scheduler instance with default configuration.

Declaration

public Scheduler()

Scheduler(string)

Initializes Scheduler instance according to the options specified in given configuration file. In particular, Scheduler extracts from configuration a set of predefined session schedules and connection settings later available through Schedules and ConnectionSettings properties.

Declaration

public Scheduler(string configurationFile)

Parameters

Type	Name	Description
string	configurationFile	Path to the Scheduler's configuration.

Properties

ConnectionSettings

Collection of predefined session connection settings associated with unique names (ids) as it was specified in the configuration file.

Declaration

public IDictionary<string, SessionConnectionSettings> ConnectionSettings { get; }

Property Value

Type	Description
IDictionary<string, SessionConnectionSettings>

ReconnectAttempts

Number of attempts to restore the telecommunication link.

Declaration

public int ReconnectAttempts { get; set; }

Property Value

Type	Description
int

ReconnectInterval

Time interval between the attempts to restore the telecommunication link (in seconds).

Declaration

public int ReconnectInterval { get; set; }

Property Value

Type	Description
int

Schedules

Collection of predefined session schedules associated with unique names (ids) as it was specified in Scheduler's configuration file.

Declaration

public IDictionary<string, SessionSchedule> Schedules { get; }

Property Value

Type	Description
IDictionary<string, SessionSchedule>

TimeZone

This property allows to setup time zone used for schedules. Default value is TimeZoneInfo.Local.

Declaration

public TimeZoneInfo TimeZone { get; set; }

Property Value

Type	Description
TimeZoneInfo

UtcTimeUsage

This property allows switching local time to UTC time usage

Declaration

[Obsolete("Please use Scheduler.TimeZone = TimeZoneInfo.Utc", true)]
public bool UtcTimeUsage { get; set; }

Property Value

Type	Description
bool

Methods

Dispose()

Performs graceful shutdown of scheduling services.

Declaration

public void Dispose()

~Scheduler()

Performs graceful shutdown of scheduling services.

Declaration

protected ~Scheduler()

Register(Session, SessionSchedule, SessionConnectionSettings)

Adds session to automatic connection management. If session is being added during active time frame, it will be connected immediately. If session is being registered during inactive time frame and has active state, it will be disconnected. If session already registered, exception will be thrown.

Declaration

public void Register(Session session, SessionSchedule schedule, SessionConnectionSettings connectionSettings)

Parameters

Type	Name	Description
Session	session	Session to be scheduled.
SessionSchedule	schedule	Schedule which defines session connection time, periodicity as well as other attributes.
SessionConnectionSettings	connectionSettings	Connection settings for given session to be used when session must be connected.

Register(Session, SessionSchedule[], SessionConnectionSettings)

Adds session to automatic connection management. If session is being added during active time frame, it will be connected immediately. If session is being registered during inactive time frame and has active state, it will be disconnected. If session already registered, exception will be thrown.

Declaration

public void Register(Session session, SessionSchedule[] schedules, SessionConnectionSettings connectionSettings)

Parameters

Type	Name	Description
Session	session	Session to be scheduled.
SessionSchedule[]	schedules	Schedules which defines session connection time, periodicity as well as other attributes.
SessionConnectionSettings	connectionSettings	Connection settings for given session to be used when session must be connected.

Register(Session, string, string)

Adds session to automatic connection management. If session is being added during active time frame, it will be connected immediately. If session is being registered during inactive time frame and has active state, it will be disconnected. If session already registered, exception will be thrown.

Declaration

public void Register(Session session, string scheduleId, string connectionSettingsId)

Parameters

Type	Name	Description
Session	session	Session to be scheduled.
string	scheduleId	Id of predefined schedule to use for given session.
string	connectionSettingsId	Id of predefined connection settings to use for given session.

Register(Session, string[], string)

Adds session to automatic connection management. If session is being added during active time frame, it will be connected immediately. If session is being registered during inactive time frame and has active state, it will be disconnected. If session already registered, exception will be thrown.

Declaration

public void Register(Session session, string[] scheduleIds, string connectionSettingsId)

Parameters

Type	Name	Description
Session	session	Session to be scheduled.
string[]	scheduleIds	Ids of predefined schedules to use for given session.
string	connectionSettingsId	Id of predefined connection settings to use for given session.

SessionDesiredState(Session)

Returns a desired state (Established or Disconnected), for the current time point, of the given session in accordance with the registered, for this session, schedule.

Declaration

public SessionState SessionDesiredState(Session registeredSession)

Parameters

Type	Name	Description
Session	registeredSession	Registered session which should be checked.

Returns

Type	Description
SessionState	The desired state (Established or Disconnected), for the current time point, of the given session in accordance with the registered, for this session, schedule.

SessionDesiredState(Session, DateTime)

Returns a desired state (Established or Disconnected), for the given UTC time point, of the given session in accordance with the registered, for this session, schedule.

Declaration

public SessionState SessionDesiredState(Session registeredSession, DateTime timeUtc)

Parameters

Type	Name	Description
Session	registeredSession	Registered session which should be checked.
DateTime	timeUtc	Given UTC time point for checking.

Returns

Type	Description
SessionState	The desired state (Established or Disconnected), for the given UTC time point, of the given session in accordance with the registered, for this session, schedule.

Unregister(Session)

Removes session from automatic connection management services. If session were not registered before, does actually nothing.

Declaration

public void Unregister(Session session)

Parameters

Type	Name	Description
Session	session	Session which should be unregistered.

Events

Error

Allows scheduler's users to be notified about errors occurred while maintaining sessions connections.

Scheduler doesn't notify about all errors occurred while maintaining session activity. For example, if session was not connected within first time as well as connection was dropped, scheduler will not fire error event immediately. Instead, it will perform reconnection attempts according to FIX Engine settings. Only if all attempts will fail, scheduler will fire error event.

Once scheduler notified about inability to connect certain session, it will not perform more attempts to bring session to connected state until next logon (activity) time.

Declaration

public event EventHandler<SessionErrorEventArgs> Error

Event Type

Type	Description
EventHandler<SessionErrorEventArgs>

InitiatorConnecting

Allows scheduler's users to be notified when initiator will try to connect to the next counterparty.

Declaration

public event EventHandler<InitiatorConnectingEventArgs> InitiatorConnecting

Event Type

Type	Description
EventHandler<InitiatorConnectingEventArgs>

SessionLoggedOn

Allows scheduler's users to be notified about that scheduler performs session logon.

Declaration

public event EventHandler<SessionEventArgs> SessionLoggedOn

Event Type

Type	Description
EventHandler<SessionEventArgs>

SessionLoggedOut

Allows scheduler's users to be notified about that scheduler performs session logout.

Declaration

public event EventHandler<SessionEventArgs> SessionLoggedOut

Event Type

Type	Description
EventHandler<SessionEventArgs>

SessionLoggingOn

Allows scheduler's users to be notified about that scheduler wants to perform session logon.

Declaration

public event EventHandler<SessionEventArgs> SessionLoggingOn

Event Type

Type	Description
EventHandler<SessionEventArgs>

SessionLoggingOut

Allows scheduler's users to be notified about that scheduler wants to perform session logout and control this process.

Declaration

public event EventHandler<SessionLoggingOutEventArgs> SessionLoggingOut

Event Type

Type	Description
EventHandler<SessionLoggingOutEventArgs>

SessionResetLocalSequenceNumbers

Allows scheduler's users to be notified about that scheduler reset session local sequence numbers.

Declaration

public event EventHandler<SessionEventArgs> SessionResetLocalSequenceNumbers

Event Type

Type	Description
EventHandler<SessionEventArgs>

SessionResettingLocalSequenceNumbers

Allows scheduler's users to be notified about that scheduler wants to reset session local sequence numbers.

Declaration

public event EventHandler<SessionEventArgs> SessionResettingLocalSequenceNumbers

Event Type

Type	Description
EventHandler<SessionEventArgs>

Warning

Allows scheduler's users to be notified about warnings occurred while maintaining sessions connections.

Declaration

public event EventHandler<SessionWarningEventArgs> Warning

Event Type

Type	Description
EventHandler<SessionWarningEventArgs>

Implements

IDisposable