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flow-control-components.go
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flow-control-components.go
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package circuitfactory
import (
"fmt"
"go.uber.org/fx"
policylangv1 "github.com/fluxninja/aperture/v2/api/gen/proto/go/aperture/policy/language/v1"
loadscheduler "github.com/fluxninja/aperture/v2/pkg/policies/controlplane/components/flowcontrol/load-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/iface"
"github.com/fluxninja/aperture/v2/pkg/policies/controlplane/runtime"
)
// newFlowControlNestedAndOptions creates parent and leaf components and their fx options for a component stack spec.
func newFlowControlNestedAndOptions(
flowControlComponentProto *policylangv1.FlowControl,
componentID runtime.ComponentID,
policyReadAPI iface.Policy,
) (Tree, []*runtime.ConfiguredComponent, fx.Option, error) {
retErr := func(err error) (Tree, []*runtime.ConfiguredComponent, fx.Option, error) {
return Tree{}, nil, nil, err
}
loadSchedulerProto := &policylangv1.LoadScheduler{}
isLoadScheduler := false
if proto := flowControlComponentProto.GetLoadScheduler(); proto != nil {
loadSchedulerProto = proto
isLoadScheduler = true
}
adaptiveLoadSchedulerProto := &policylangv1.AdaptiveLoadScheduler{}
isAdaptiveLoadScheduler := false
if proto := flowControlComponentProto.GetAdaptiveLoadScheduler(); proto != nil {
adaptiveLoadSchedulerProto = proto
isAdaptiveLoadScheduler = true
}
aimdLoadSchedulerProto := &policylangv1.AIMDLoadScheduler{}
isAIMDLoadScheduler := false
if proto := flowControlComponentProto.GetAimdLoadScheduler(); proto != nil {
aimdLoadSchedulerProto = proto
isAIMDLoadScheduler = true
}
rangeDrivenLoadSchedulerProto := &policylangv1.RangeDrivenLoadScheduler{}
isRangeDrivenLoadScheduler := false
if proto := flowControlComponentProto.GetRangeDrivenLoadScheduler(); proto != nil {
rangeDrivenLoadSchedulerProto = proto
isRangeDrivenLoadScheduler = true
}
aiadLoadSchedulerProto := &policylangv1.AIADLoadScheduler{}
isAIADLoadScheduler := false
if proto := flowControlComponentProto.GetAiadLoadScheduler(); proto != nil {
aiadLoadSchedulerProto = proto
isAIADLoadScheduler = true
}
loadRampProto := &policylangv1.LoadRamp{}
isLoadRamp := false
if proto := flowControlComponentProto.GetLoadRamp(); proto != nil {
loadRampProto = proto
isLoadRamp = true
}
rateLimiterProto := &policylangv1.RateLimiter{}
isRateLimiter := false
if proto := flowControlComponentProto.GetRateLimiter(); proto != nil {
rateLimiterProto = proto
isRateLimiter = true
}
// Factory parser to determine what kind of composite component to create
if isLoadScheduler {
var options []fx.Option
// sync config
configSyncOptions, err := loadscheduler.NewConfigSyncOptions(loadSchedulerProto,
componentID,
policyReadAPI)
if err != nil {
return retErr(err)
}
options = append(options, configSyncOptions)
configuredComponent, nestedCircuit, err := loadscheduler.ParseLoadScheduler(loadSchedulerProto, componentID, policyReadAPI)
if err != nil {
return retErr(err)
}
tree, configuredComponents, nestedOptions, err := ParseNestedCircuit(configuredComponent, nestedCircuit, componentID, policyReadAPI)
if err != nil {
return retErr(err)
}
options = append(options, nestedOptions)
return tree, configuredComponents, fx.Options(options...), nil
} else if isAdaptiveLoadScheduler {
// convert to aimd load scheduler
adaptiveLoadSchedulerProtoBytes, err := adaptiveLoadSchedulerProto.MarshalJSON()
if err != nil {
return retErr(err)
}
aimdProto := &policylangv1.AIMDLoadScheduler{}
err = aimdProto.UnmarshalJSON(adaptiveLoadSchedulerProtoBytes)
if err != nil {
return retErr(err)
}
configuredComponent, nestedCircuit, err := loadscheduler.ParseAIMDLoadScheduler(aimdProto, componentID)
if err != nil {
return retErr(err)
}
return ParseNestedCircuit(configuredComponent, nestedCircuit, componentID, policyReadAPI)
} else if isAIMDLoadScheduler {
configuredComponent, nestedCircuit, err := loadscheduler.ParseAIMDLoadScheduler(aimdLoadSchedulerProto, componentID)
if err != nil {
return retErr(err)
}
return ParseNestedCircuit(configuredComponent, nestedCircuit, componentID, policyReadAPI)
} else if isRangeDrivenLoadScheduler {
configuredComponent, nestedCircuit, err := loadscheduler.ParseRangeDrivenLoadScheduler(rangeDrivenLoadSchedulerProto, componentID)
if err != nil {
return retErr(err)
}
return ParseNestedCircuit(configuredComponent, nestedCircuit, componentID, policyReadAPI)
} else if isAIADLoadScheduler {
configuredComponent, nestedCircuit, err := loadscheduler.ParseAIADLoadScheduler(aiadLoadSchedulerProto, componentID)
if err != nil {
return retErr(err)
}
return ParseNestedCircuit(configuredComponent, nestedCircuit, componentID, policyReadAPI)
} else if isLoadRamp {
configuredComponent, nestedCircuit, err := sampler.ParseLoadRamp(loadRampProto, componentID)
if err != nil {
return retErr(err)
}
return ParseNestedCircuit(configuredComponent, nestedCircuit, componentID, policyReadAPI)
} else if isRateLimiter {
var options []fx.Option
// sync config
configSyncOptions, err := ratelimiter.NewConfigSyncOptions(
rateLimiterProto,
componentID,
policyReadAPI)
if err != nil {
return retErr(err)
}
options = append(options, configSyncOptions)
configuredComponent, nestedCircuit, err := ratelimiter.ParseRateLimiter(rateLimiterProto, componentID, policyReadAPI)
if err != nil {
return retErr(err)
}
tree, configuredComponents, nestedOptions, err := ParseNestedCircuit(configuredComponent, nestedCircuit, componentID, policyReadAPI)
if err != nil {
return retErr(err)
}
options = append(options, nestedOptions)
return tree, configuredComponents, fx.Options(options...), nil
}
return retErr(fmt.Errorf("unsupported/missing component type, proto: %+v", flowControlComponentProto))
}