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15.6. STS Client Pooling
The PicketLink provides a pool of STS clients on the server. This removes STS Client creation as a bottleneck.
Client pooling can be utilized from login modules that need an STS client to obtain SAML tickets.
Login Modules that can utilize STS client pooling:
- org.picketlink.identity.federation.core.wstrust.auth.STSIssuingLoginModule
- org.picketlink.identity.federation.core.wstrust.auth.STSValidatingLoginModule
- org.picketlink.trust.jbossws.jaas.JBWSTokenIssuingLoginModule
The default number of clients in the pool for each login module is configured via the
initialNumberOfClients login module option.
The STSClientPoolFactory class
org.picketlink.identity.federation.bindings.stspool.STSClientPoolFactory provides client pool functionality to applications.
Using STSClientPoolFactory
STS clients are inserted into sub pools using their configuration as a key. Obtain STSClientPool instance and then initialize a sub pool based on configuration, optionally with initial number of STS clients or rely on default number.
final STSClientPool pool = STSClientPoolFactory.getPoolInstance(); pool.createPool(20, stsClientConfig); final STSClient client = pool.getClient(stsClientConfig);
final STSClientPool pool = STSClientPoolFactory.getPoolInstance();
pool.createPool(20, stsClientConfig);
final STSClient client = pool.getClient(stsClientConfig);
When you are done with a client, you can return it to the pool like so:
pool.returnClient();
pool.returnClient();
To check if a subpool already exists for a given configuration:
if (! pool.configExists(stsClientConfig) {
pool.createPool(stsClientConfig);
}
if (! pool.configExists(stsClientConfig) {
pool.createPool(stsClientConfig);
}
When the PicketLink Federation subsystem is enabled, all client pools created for a deployment are destroyed automatically during the undeploy process. To manually destroy a pool:
pool.destroyPool(stsClientConfig);
pool.destroyPool(stsClientConfig);
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