GuardrailsConfigProvider (apache-cassandra API)

All Known Implementing Classes:

GuardrailsConfigProvider.Default
```
public interface GuardrailsConfigProvider
```
Provider of GuardrailsConfigs for a ClientState.
The GuardrailsConfigProvider.Default implementation always retuns the GuardrailsConfig parsed from cassandra.yaml, but different implementations can return different configurations based on the specified ClientState.
Custom implementations can be specified at runtime with the system property CUSTOM_IMPLEMENTATION_PROPERTY. These configurations can be used to read the guardrails configuration from some other source, and provide different configurations depending on the ClientState or some other factors. However, this mechanism for pluggability and the related GuardrailsConfig interface are not officially supported and may change in a minor release.

Nested Class Summary

Nested Classes
Modifier and Type	Interface	Description
`static class`	`GuardrailsConfigProvider.Default`	Default implementation of `GuardrailsConfigProvider` that always returns the `GuardrailsConfig` parsed from `cassandra.yaml`, independently of the `ClientState`.

Field Summary

Fields
Modifier and Type Field Description

static java.lang.String CUSTOM_IMPLEMENTATION_PROPERTY

static GuardrailsConfigProvider instance

Method Summary

All Methods Static Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`static GuardrailsConfigProvider`	`build(java.lang.String customImpl)`	Creates an instance of the custom guardrails config provider of the given class.
`GuardrailsConfig`	`getOrCreate(ClientState state)`	Returns the `GuardrailsConfig` to be used for the specified `ClientState`.

- Field Detail
  - CUSTOM_IMPLEMENTATION_PROPERTY
```
static final java.lang.String CUSTOM_IMPLEMENTATION_PROPERTY
```
    See Also:
    
    Constant Field Values
  - instance
```
static final GuardrailsConfigProvider instance
```
- Method Detail
  - getOrCreate
```
GuardrailsConfig getOrCreate(@Nullable
                             ClientState state)
```
    Returns the GuardrailsConfig to be used for the specified ClientState.
    
    Parameters:
    
    state - a client state, maybe null if the guardrails check for which we are getting the config is for a background process that is not associated to a user query.
    
    Returns:
    
    the configuration to be used for state
  - build
```
static GuardrailsConfigProvider build(java.lang.String customImpl)
```
    Creates an instance of the custom guardrails config provider of the given class.
    
    Parameters:
    
    customImpl - the fully qualified classname of the guardrails config provider to be instantiated
    
    Returns:
    
    a new instance of the specified custom guardrails config provider of the given class.