This method should be called at startup.

If InsertFirst is specified, the plugin will be ordered from the beginning of the group.

If InsertFirst is specified, the plugin will be ordered from the beginning of the group.

Nop is the default.

Now goes the Go plugins.

Last position.

Only for Listener Native plugins.

Only for Network Native plugins.

Only for HTTP Native plugins The first position in the HTTP filters.

Stats plugins are expected to be called mainly in the Log phase.

Plugins do authentication.

Plugins do authorization.

Plugins do observability.

Plugins like WAF, request validation, etc.

Plugins do traffic control, like rate limit, circuit breaker, etc.

Plugins do request/response transform.

ConfigValidationError is the validation error returned by Config.Validate if the designated constraints aren't met.

PluginMethodDefaultImpl provides reasonable implementation for optional methods.

Here we introduce extra struct to avoid cyclic import between pkg/filtermanager and pkg/plugins.

ConfigMultiError is an error wrapping multiple validation errors returned by Config.ValidateAll() if the designated constraints aren't met.