Class InMemoryPolicyRegistry

java.lang.Object

com.svenruppert.jsentinel.policy.impl.InMemoryPolicyRegistry

All Implemented Interfaces:

PolicyRegistry

@ExperimentalJSentinelApi
public final class InMemoryPolicyRegistry
extends Object
implements PolicyRegistry

Thread-safe in-memory PolicyRegistry.

Re-registering a policy with the same name replaces the previous entry. Concurrent reads and registrations are safe because the backing map is a ConcurrentHashMap.

This is the default implementation returned by JSentinelServiceResolver.policyRegistry() when no SPI override is registered.

Constructor Summary

Constructors

Constructor	Description
InMemoryPolicyRegistry()	Creates an empty registry.

Method Summary

Modifier and Type	Method	Description
PolicyDecision	evaluate(String name, PolicyContext context)	Evaluates the policy with the given name against the context.
Optional<Policy>	find(String name)	Looks up a previously registered policy by name.
void	register(Policy policy)	Registers a policy.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

InMemoryPolicyRegistry

public InMemoryPolicyRegistry()

Creates an empty registry.

Method Details

register

public void register(Policy policy)

Description copied from interface: PolicyRegistry

Registers a policy. Implementations decide whether duplicate names replace or reject the existing entry — see the implementation's Javadoc.

Specified by:

register in interface PolicyRegistry

Parameters:

policy - policy; must not be null

find

public Optional<Policy> find(String name)

Description copied from interface: PolicyRegistry

Looks up a previously registered policy by name.

Specified by:

find in interface PolicyRegistry

Parameters:

name - policy name

Returns:

policy, if present

evaluate

public PolicyDecision evaluate(String name,
 PolicyContext context)

Description copied from interface: PolicyRegistry

Evaluates the policy with the given name against the context.

If no policy is registered for name, implementations return Denied("unknown policy: <name>") rather than throwing — this matches the fail-closed default of the rest of the framework and lets adapters fall through to a standard Forbidden response without special-casing missing policies.

Specified by:

evaluate in interface PolicyRegistry

Parameters:

name - policy name

context - policy context

Returns:

decision