opensaml::saml2md::MetadataProvider Class Reference

Supplies an individual source of metadata. More...

#include <saml/saml2/metadata/MetadataProvider.h>

Inheritance diagram for opensaml::saml2md::MetadataProvider:
opensaml::saml2md::DiscoverableMetadataProvider opensaml::saml2md::ObservableMetadataProvider opensaml::saml2md::AbstractMetadataProvider opensaml::saml2md::DynamicMetadataProvider

List of all members.

Classes

struct  Criteria
 Batches up criteria for entity lookup. More...

Public Member Functions

virtual ~MetadataProvider ()
 Destructor will delete any installed filters.
virtual const char * getId () const
 Returns an identifier for the provider for logging/status purposes.
virtual void addMetadataFilter (MetadataFilter *newFilter)
 Adds a metadata filter to apply to any resolved metadata.
virtual MetadataFilterremoveMetadataFilter (MetadataFilter *oldFilter)
 Removes a metadata filter.
void setContext (const MetadataFilterContext *ctx)
 Sets a filtering context object for use by the filtering process.
virtual void init ()=0
 Should be called after instantiating provider and adding filters, but before performing any lookup operations.
virtual void outputStatus (std::ostream &os) const
 Generate an XML representation of the provider's status.
virtual const
xmltooling::XMLObject * 
getMetadata () const =0
 Gets the entire metadata tree, after the registered filter has been applied.
virtual const EntitiesDescriptor * getEntitiesDescriptor (const XMLCh *name, bool requireValidMetadata=true) const
 Gets the metadata for a given group of entities.
virtual const EntitiesDescriptor * getEntitiesDescriptor (const char *name, bool requireValidMetadata=true) const =0
 Gets the metadata for a given group of entities.
virtual std::pair< const
EntityDescriptor *, const
RoleDescriptor * > 
getEntityDescriptor (const Criteria &criteria) const =0
 Gets entity metadata based on supplied criteria.

Protected Member Functions

 MetadataProvider (const xercesc::DOMElement *e=nullptr)
 Constructor.
void doFilters (xmltooling::XMLObject &xmlObject) const
 Applies any installed filters to a metadata instance.

Detailed Description

Supplies an individual source of metadata.

The source can be a local file, remote service, or the result of a dynamic lookup, can include local caching, etc. Providers MUST be locked before any lookup operations.


Constructor & Destructor Documentation

opensaml::saml2md::MetadataProvider::MetadataProvider ( const xercesc::DOMElement *  e = nullptr  )  [protected]

Constructor.

If a DOM is supplied, a set of default logic will be used to identify and build MetadataFilter plugins and install them into the provider.

The following XML content is supported:

  • <MetadataFilter> elements with a type attribute and type-specific content
  • <Exclude> elements representing a BlacklistMetadataFilter
  • <BlacklistMetadataFilter> element containing <Exclude> elements
  • <Include> elements representing a WhitelistMetadataFilter
  • <SignatureMetadataFilter> element containing a <KeyResolver> element
  • <WhitelistMetadataFilter> element containing <Include> elements

XML namespaces are ignored in the processing of these elements.

Parameters:
e DOM to supply configuration for provider

Member Function Documentation

virtual void opensaml::saml2md::MetadataProvider::addMetadataFilter ( MetadataFilter newFilter  )  [virtual]

Adds a metadata filter to apply to any resolved metadata.

Will not be applied to metadata that is already loaded.

Parameters:
newFilter metadata filter to add
void opensaml::saml2md::MetadataProvider::doFilters ( xmltooling::XMLObject &  xmlObject  )  const [protected]

Applies any installed filters to a metadata instance.

Parameters:
xmlObject the metadata to be filtered
virtual const EntitiesDescriptor* opensaml::saml2md::MetadataProvider::getEntitiesDescriptor ( const char *  name,
bool  requireValidMetadata = true 
) const [pure virtual]

Gets the metadata for a given group of entities.

If a valid group is returned, the resolver will be left in a locked state. The caller MUST unlock the resolver when finished with the group.

Parameters:
name the name of the group
requireValidMetadata indicates whether the metadata for the group must be valid/current
Returns:
the group's metadata or nullptr if there is no metadata or no valid metadata

Implemented in opensaml::saml2md::AbstractMetadataProvider.

virtual const EntitiesDescriptor* opensaml::saml2md::MetadataProvider::getEntitiesDescriptor ( const XMLCh *  name,
bool  requireValidMetadata = true 
) const [virtual]

Gets the metadata for a given group of entities.

If a valid group is returned, the resolver will be left in a locked state. The caller MUST unlock the resolver when finished with the group.

Parameters:
name the name of the group
requireValidMetadata indicates whether the metadata for the group must be valid/current
Returns:
the group's metadata or nullptr if there is no metadata or no valid metadata
virtual std::pair<const EntityDescriptor*,const RoleDescriptor*> opensaml::saml2md::MetadataProvider::getEntityDescriptor ( const Criteria criteria  )  const [pure virtual]

Gets entity metadata based on supplied criteria.

If a valid entity is returned, the provider will be left in a locked state. The caller MUST unlock the provider when finished with the entity.

Parameters:
criteria lookup criteria
Returns:
the entity's metadata (and optionally a role) or nullptr if there is no qualifying metadata

Implemented in opensaml::saml2md::AbstractMetadataProvider, and opensaml::saml2md::DynamicMetadataProvider.

virtual const char* opensaml::saml2md::MetadataProvider::getId (  )  const [virtual]

Returns an identifier for the provider for logging/status purposes.

Returns:
an identifier, or null

Reimplemented in opensaml::saml2md::DynamicMetadataProvider.

virtual const xmltooling::XMLObject* opensaml::saml2md::MetadataProvider::getMetadata (  )  const [pure virtual]

Gets the entire metadata tree, after the registered filter has been applied.

The caller MUST unlock the provider when finished with the data.

Returns:
the entire metadata tree

Implemented in opensaml::saml2md::DynamicMetadataProvider.

virtual void opensaml::saml2md::MetadataProvider::init (  )  [pure virtual]

Should be called after instantiating provider and adding filters, but before performing any lookup operations.

Allows the provider to defer initialization processes that are likely to result in exceptions until after the provider is safely created. Providers SHOULD perform as much processing as possible in this method so as to report/log any errors that would affect later processing.

Implemented in opensaml::saml2md::DynamicMetadataProvider.

virtual void opensaml::saml2md::MetadataProvider::outputStatus ( std::ostream &  os  )  const [virtual]

Generate an XML representation of the provider's status.

The XML must be well-formed, but is otherwise arbitrary.

Parameters:
os stream to write status information to

Reimplemented in opensaml::saml2md::AbstractMetadataProvider.

virtual MetadataFilter* opensaml::saml2md::MetadataProvider::removeMetadataFilter ( MetadataFilter oldFilter  )  [virtual]

Removes a metadata filter.

The caller must delete the filter if necessary.

Parameters:
oldFilter metadata filter to remove
Returns:
the old filter
void opensaml::saml2md::MetadataProvider::setContext ( const MetadataFilterContext ctx  ) 

Sets a filtering context object for use by the filtering process.

The object's lifetime must last for the duration of the lifetime of the MetadataProvider.

Parameters:
ctx a context object

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

Generated on 9 Jan 2013 for opensaml-2.5.2 by  doxygen 1.6.1