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component-factory.go
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component-factory.go
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package circuitfactory
import (
"fmt"
"go.uber.org/fx"
"google.golang.org/protobuf/proto"
"google.golang.org/protobuf/types/known/anypb"
policylangv1 "github.com/fluxninja/aperture/v2/api/gen/proto/go/aperture/policy/language/v1"
policyprivatev1 "github.com/fluxninja/aperture/v2/api/gen/proto/go/aperture/policy/private/v1"
"github.com/fluxninja/aperture/v2/pkg/log"
"github.com/fluxninja/aperture/v2/pkg/policies/controlplane/components"
"github.com/fluxninja/aperture/v2/pkg/policies/controlplane/components/autoscale/podscaler"
"github.com/fluxninja/aperture/v2/pkg/policies/controlplane/components/controller"
loadscheduler "github.com/fluxninja/aperture/v2/pkg/policies/controlplane/components/flowcontrol/load-scheduler"
quotascheduler "github.com/fluxninja/aperture/v2/pkg/policies/controlplane/components/flowcontrol/quota-scheduler"
ratelimiter "github.com/fluxninja/aperture/v2/pkg/policies/controlplane/components/flowcontrol/rate-limiter"
"github.com/fluxninja/aperture/v2/pkg/policies/controlplane/components/flowcontrol/sampler"
"github.com/fluxninja/aperture/v2/pkg/policies/controlplane/components/query/promql"
"github.com/fluxninja/aperture/v2/pkg/policies/controlplane/iface"
"github.com/fluxninja/aperture/v2/pkg/policies/controlplane/runtime"
)
// FactoryModule for component factory run via the main app.
func FactoryModule() fx.Option {
return fx.Options(
promql.Module(),
)
}
// FactoryModuleForPolicyApp for component factory run via the policy app. For singletons in the Policy scope.
func FactoryModuleForPolicyApp(circuitAPI runtime.CircuitSuperAPI) fx.Option {
return fx.Options(
autoScaleModuleForPolicyApp(circuitAPI),
)
}
// NewComponentAndOptions creates parent and leaf components and their fx options for a component spec.
func NewComponentAndOptions(
componentProto *policylangv1.Component,
componentID runtime.ComponentID,
policyReadAPI iface.Policy,
) (Tree, []*runtime.ConfiguredComponent, fx.Option, error) {
var ctor componentConstructor
switch config := componentProto.Component.(type) {
case *policylangv1.Component_GradientController:
ctor = mkCtor(config.GradientController, controller.NewGradientControllerAndOptions)
case *policylangv1.Component_PidController:
ctor = mkCtor(config.PidController, components.NewPIDControllerAndOptions)
case *policylangv1.Component_Ema:
ctor = mkCtor(config.Ema, components.NewEMAAndOptions)
case *policylangv1.Component_Sma:
ctor = mkCtor(config.Sma, components.NewSMAAndOptions)
case *policylangv1.Component_ArithmeticCombinator:
ctor = mkCtor(config.ArithmeticCombinator, components.NewArithmeticCombinatorAndOptions)
case *policylangv1.Component_Variable:
ctor = mkCtor(config.Variable, components.NewVariableAndOptions)
case *policylangv1.Component_BoolVariable:
ctor = mkCtor(config.BoolVariable, components.NewBoolVariableAndOptions)
case *policylangv1.Component_Decider:
ctor = mkCtor(config.Decider, components.NewDeciderAndOptions)
case *policylangv1.Component_Switcher:
ctor = mkCtor(config.Switcher, components.NewSwitcherAndOptions)
case *policylangv1.Component_UnaryOperator:
ctor = mkCtor(config.UnaryOperator, components.NewUnaryOperatorAndOptions)
case *policylangv1.Component_Max:
ctor = mkCtor(config.Max, components.NewMaxAndOptions)
case *policylangv1.Component_Min:
ctor = mkCtor(config.Min, components.NewMinAndOptions)
case *policylangv1.Component_Extrapolator:
ctor = mkCtor(config.Extrapolator, components.NewExtrapolatorAndOptions)
case *policylangv1.Component_FirstValid:
ctor = mkCtor(config.FirstValid, components.NewFirstValidAndOptions)
case *policylangv1.Component_Alerter:
ctor = mkCtor(config.Alerter, components.NewAlerterAndOptions)
case *policylangv1.Component_Integrator:
ctor = mkCtor(config.Integrator, components.NewIntegratorAndOptions)
case *policylangv1.Component_Differentiator:
ctor = mkCtor(config.Differentiator, components.NewDifferentiatorAndOptions)
case *policylangv1.Component_And:
ctor = mkCtor(config.And, components.NewAndAndOptions)
case *policylangv1.Component_Or:
ctor = mkCtor(config.Or, components.NewOrAndOptions)
case *policylangv1.Component_Inverter:
ctor = mkCtor(config.Inverter, components.NewInverterAndOptions)
case *policylangv1.Component_PulseGenerator:
ctor = mkCtor(config.PulseGenerator, components.NewPulseGeneratorAndOptions)
case *policylangv1.Component_Holder:
ctor = mkCtor(config.Holder, components.NewHolderAndOptions)
case *policylangv1.Component_SignalGenerator:
ctor = mkCtor(config.SignalGenerator, components.NewSignalGeneratorAndOptions)
case *policylangv1.Component_NestedSignalIngress:
ctor = mkCtor(config.NestedSignalIngress, components.NewNestedSignalIngressAndOptions)
case *policylangv1.Component_NestedSignalEgress:
ctor = mkCtor(config.NestedSignalEgress, components.NewNestedSignalEgressAndOptions)
case *policylangv1.Component_NestedCircuit:
return NewNestedCircuitAndOptions(config.NestedCircuit, componentID, policyReadAPI)
case *policylangv1.Component_PolynomialRangeFunction:
ctor = mkCtor(config.PolynomialRangeFunction, components.NewPolynomialRangeFunctionAndOptions)
case *policylangv1.Component_Query:
query := componentProto.GetQuery()
switch queryConfig := query.Component.(type) {
case *policylangv1.Query_Promql:
ctor = mkCtor(queryConfig.Promql, promql.NewPromQLAndOptions)
}
case *policylangv1.Component_FlowControl:
flowControl := componentProto.GetFlowControl()
switch flowControlConfig := flowControl.Component.(type) {
case *policylangv1.FlowControl_QuotaScheduler:
ctor = mkCtor(flowControlConfig.QuotaScheduler, quotascheduler.NewQuotaSchedulerAndOptions)
case *policylangv1.FlowControl_RateLimiter:
ctor = mkCtor(flowControlConfig.RateLimiter, ratelimiter.NewRateLimiterAndOptions)
case *policylangv1.FlowControl_Sampler:
ctor = mkCtor(flowControlConfig.Sampler, sampler.NewSamplerAndOptions)
case *policylangv1.FlowControl_Private:
switch flowControlConfig.Private.TypeUrl {
case "type.googleapis.com/aperture.policy.private.v1.LoadActuator":
loadActuator := &policyprivatev1.LoadActuator{}
if err := anypb.UnmarshalTo(flowControlConfig.Private, loadActuator, proto.UnmarshalOptions{}); err != nil {
return Tree{}, nil, nil, err
}
ctor = mkCtor(loadActuator, loadscheduler.NewActuatorAndOptions)
default:
err := fmt.Errorf("unknown flow control type: %s", flowControlConfig.Private.TypeUrl)
log.Error().Err(err).Msg("unknown flow control type")
return Tree{}, nil, nil, err
}
default:
return newFlowControlNestedAndOptions(flowControl, componentID, policyReadAPI)
}
case *policylangv1.Component_AutoScale:
autoScale := componentProto.GetAutoScale()
switch autoScaleConfig := autoScale.Component.(type) {
case *policylangv1.AutoScale_Private:
private := autoScaleConfig.Private
switch private.TypeUrl {
case "type.googleapis.com/aperture.policy.private.v1.PodScaleActuator":
podScaleActuator := &policyprivatev1.PodScaleActuator{}
if err := anypb.UnmarshalTo(private, podScaleActuator, proto.UnmarshalOptions{}); err != nil {
return Tree{}, nil, nil, err
}
ctor = mkCtor(podScaleActuator, podscaler.NewScaleActuatorAndOptions)
case "type.googleapis.com/aperture.policy.private.v1.PodScaleReporter":
podScaleReporter := &policyprivatev1.PodScaleReporter{}
if err := anypb.UnmarshalTo(private, podScaleReporter, proto.UnmarshalOptions{}); err != nil {
return Tree{}, nil, nil, err
}
ctor = mkCtor(podScaleReporter, podscaler.NewScaleReporterAndOptions)
default:
err := fmt.Errorf("unknown auto scale type: %s", autoScaleConfig.Private.TypeUrl)
log.Error().Err(err).Msg("unknown auto scale type")
return Tree{}, nil, nil, err
}
default:
return newAutoScaleNestedAndOptions(autoScale, componentID, policyReadAPI)
}
default:
return Tree{}, nil, nil, fmt.Errorf("unknown component type: %T", config)
}
component, config, option, err := ctor(componentID, policyReadAPI)
if err != nil {
return Tree{}, nil, nil, err
}
configuredComponent, err := runtime.NewConfiguredComponent(component, config, componentID, true)
if err != nil {
return Tree{}, nil, nil, err
}
return Tree{Node: configuredComponent}, []*runtime.ConfiguredComponent{configuredComponent}, option, nil
}
type componentConstructor func(
componentID runtime.ComponentID,
policyReadAPI iface.Policy,
) (runtime.Component, any, fx.Option, error)
func mkCtor[Config any, Comp runtime.Component](
config *Config,
origCtor func(*Config, runtime.ComponentID, iface.Policy) (Comp, fx.Option, error),
) componentConstructor {
return func(componentID runtime.ComponentID, policy iface.Policy) (runtime.Component, any, fx.Option, error) {
comp, opt, err := origCtor(config, componentID, policy)
return comp, config, opt, err
}
}