Chooses the profile and a transport for a target object on which an invocation can be made. More...

#include <Profile_Transport_Resolver.h>

Collaboration diagram for TAO::Profile_Transport_Resolver:

Public Member Functions
	Profile_Transport_Resolver (CORBA::Object p, TAO_Stub stub, bool block=true)
	Constructor. More...

	~Profile_Transport_Resolver (void)

void	resolve (ACE_Time_Value *val)
	Method where the bunch of the action takes place. More...

void	transport_released (void) const

bool	try_connect (TAO_Transport_Descriptor_Interface desc, ACE_Time_Value val)

bool	try_parallel_connect (TAO_Transport_Descriptor_Interface desc, ACE_Time_Value val)

bool	use_parallel_connect (void) const

void	init_inconsistent_policies (void)

CORBA::PolicyList *	inconsistent_policies (void) const

CORBA::PolicyList *	steal_inconsistent_policies (void)

Accessors and mutators for this class. The following methods
are used by the clients of this class to access strategies and other internal workings.
void	profile (TAO_Profile *pfile)
	Mutator for profile. More...

TAO_Profile *	profile (void) const
	Accessor for profile. More...

TAO_Stub *	stub (void) const
	Accessor for TAO_Stub. More...

CORBA::Object *	object (void) const
	Accessor for the target in use. More...

TAO_Transport *	transport (void) const
	Accessor for the transport reserved for this invocation. More...

int	find_transport (TAO_Transport_Descriptor_Interface *)

bool	blocked_connect (void) const

Private Member Functions
bool	get_connection_timeout (ACE_Time_Value &max_wait_time)

void	operator= (const Profile_Transport_Resolver &)

	Profile_Transport_Resolver (const Profile_Transport_Resolver &)

bool	try_connect_i (TAO_Transport_Descriptor_Interface desc, ACE_Time_Value val, bool parallel)

Private Attributes
CORBA::Object *	obj_
	Target object. More...

TAO_Stub *	stub_
	Stub object for the target object. More...

TAO::Transport_Selection_Guard	transport_
	The transport selected for this invocation. More...

TAO_Profile *	profile_
	The profile that has been selected for this invocation. More...

CORBA::PolicyList *	inconsistent_policies_
	List of inconsistent policies. More...

bool	is_released_
	Has the transport been idle? More...

bool const	blocked_
	Should we block while trying to make a connection. More...

Detailed Description

Chooses the profile and a transport for a target object on which an invocation can be made.

A target object is represented by multiple profiles, which theoretically provides multiple paths to the same target object. This class helps in choosing the right profile, and pick a transport from cache (or create a new transport if needed) that represents the profile.

Constructor & Destructor Documentation

TAO::Profile_Transport_Resolver::Profile_Transport_Resolver	(	CORBA::Object *	p,
		TAO_Stub *	stub,
		bool	block = `true`
	)

Constructor.

With block we tell whether this resolved should always deliver a connection by blocking or unblock before the connection is completely established. Please note that this has nothing to do with the synchronous or asynch connect strategy used for making connections. This is a local flag used by the clients of this to dictate some local behavior.

TAO::Profile_Transport_Resolver::~Profile_Transport_Resolver ( void )

TAO::Profile_Transport_Resolver::Profile_Transport_Resolver ( const Profile_Transport_Resolver & )

private

Member Function Documentation

bool TAO::Profile_Transport_Resolver::blocked_connect ( void ) const

Accessor to indicate whether we should block while establishing a connection.

int TAO::Profile_Transport_Resolver::find_transport ( TAO_Transport_Descriptor_Interface * desc )

See if the transport cache has an available transport and use that one rather than trying to connect via the connector. Separating this functionality enables the look up of many endpoints before trying the more time-consuming trip through the actual connector.

bool TAO::Profile_Transport_Resolver::get_connection_timeout ( ACE_Time_Value & max_wait_time )

private

Helper method to access get the connection timeout from the ORB.

CORBA::PolicyList * TAO::Profile_Transport_Resolver::inconsistent_policies ( void ) const

void TAO::Profile_Transport_Resolver::init_inconsistent_policies ( void )

Initialize the inconsistent policy list that this object has cached.

CORBA::Object_ptr TAO::Profile_Transport_Resolver::object ( void ) const

Accessor for the target in use.

void TAO::Profile_Transport_Resolver::operator= ( const Profile_Transport_Resolver & )

private

void TAO::Profile_Transport_Resolver::profile ( TAO_Profile * pfile )

Mutator for profile.

TAO_Profile * TAO::Profile_Transport_Resolver::profile ( void ) const

Accessor for profile.

void TAO::Profile_Transport_Resolver::resolve ( ACE_Time_Value * val )

Method where the bunch of the action takes place.

This is the entry point from the TAO::Invocation_Adapter class. This method accesses the endpoint selector factory from the ORB_Core to decide on the strategy to be used for selecting the profile.

CORBA::PolicyList * TAO::Profile_Transport_Resolver::steal_inconsistent_policies ( void )

TAO_Stub * TAO::Profile_Transport_Resolver::stub ( void ) const

Accessor for TAO_Stub.

TAO_Transport * TAO::Profile_Transport_Resolver::transport ( void ) const

Accessor for the transport reserved for this invocation.

void TAO::Profile_Transport_Resolver::transport_released ( void ) const

Signal to let the resolver know that the transport has been released back to the cache.

bool TAO::Profile_Transport_Resolver::try_connect	(	TAO_Transport_Descriptor_Interface *	desc,
		ACE_Time_Value *	val
	)

This is a callback method used by the endpoint selectors to delegate the responsibility of reserving a transport from the connection cache for this invocation. When the descriptor contains more than one endpoint (as part of a linked list) and the parallel flag is true then the connector will look for a connection on any of the endpoints if it supports that behavior, otherwise an ENOTSUP errno will be set and the method will return false.

bool TAO::Profile_Transport_Resolver::try_connect_i	(	TAO_Transport_Descriptor_Interface *	desc,
		ACE_Time_Value *	val,
		bool	parallel
	)

private

bool TAO::Profile_Transport_Resolver::try_parallel_connect	(	TAO_Transport_Descriptor_Interface *	desc,
		ACE_Time_Value *	val
	)

bool TAO::Profile_Transport_Resolver::use_parallel_connect ( void ) const

This method wraps a call to the orb core to see if parallel connection attempts are even desired. This is controlled by the -ORBUseParallelConnects 1|0 commandline option.

Member Data Documentation

bool const TAO::Profile_Transport_Resolver::blocked_

private

Should we block while trying to make a connection.

CORBA::PolicyList* TAO::Profile_Transport_Resolver::inconsistent_policies_

private

List of inconsistent policies.

If current effective policies cause the invocation to raise CORBA::INV_POLICY exception, the conflicting/problematic policies are stored in this list. This is used by

Parameters

Object::_validate_connection method to inform clients about causes of invocation failure.

: Conflicting policies are only stored in this list if

Parameters

init_inconsistent_policies method has been called prior to the beginning of invocation. This saves extra work of conflicting policies 'logging' when it's not needed.

Note: We don't use _var with a reason. Using _var would involve including the header file for at least Policy_ForwardC.h, and that is what we precisely want to avoid.

bool TAO::Profile_Transport_Resolver::is_released_

mutableprivate

Has the transport been idle?

CORBA::Object* TAO::Profile_Transport_Resolver::obj_

mutableprivate

Target object.

TAO_Profile* TAO::Profile_Transport_Resolver::profile_

private

The profile that has been selected for this invocation.

TAO_Stub* TAO::Profile_Transport_Resolver::stub_

private

Stub object for the target object.

TAO::Transport_Selection_Guard TAO::Profile_Transport_Resolver::transport_

private

The transport selected for this invocation.

Using the wrapper guard ensures it is available for use with the Transport Current interfaces.

The documentation for this class was generated from the following files:

Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation