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 Go to latest Published: Apr 17, 2023 License: Apache-2.0 Imports: 24 Imported by: 0

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Index

Constants

View Source 
const (
	// NestedComponentDelimiter is the delimiter used to separate the parent circuit ID and the nested circuit ID.
	NestedComponentDelimiter = "."
	// RootComponentID is the ID of the root component.
	RootComponentID = "root"
)
View Source 
const (
	// SignalTypeNamed is a named signal.
	SignalTypeNamed = iota
	// SignalTypeConstant is a constant signal.
	SignalTypeConstant
)

Variables

This section is empty.

Functions

func CircuitModule 

func CircuitModule() fx.Option

CircuitModule returns fx options of Circuit for the main app.

func Compile added in v0.15.0 

func Compile(
	configuredComponents []*ConfiguredComponent,
	logger *log.Logger,
) error

Compile compiles list of configured components into a circuit and validates it.

Types

type Circuit 

type Circuit struct {

	// Policy Read API
	iface.Policy
	// contains filtered or unexported fields
}

Circuit manages the runtime state of a set of components and their inter linkages via signals.

func NewCircuitAndOptions 

func NewCircuitAndOptions(
	configuredComponents []*ConfiguredComponent,
	policyReadAPI iface.Policy,
) (*Circuit, fx.Option)

NewCircuitAndOptions create a new Circuit struct along with fx options.

func (*Circuit) DynamicConfigUpdate added in v0.4.0 

func (circuit *Circuit) DynamicConfigUpdate(event notifiers.Event, unmarshaller config.Unmarshaller)

DynamicConfigUpdate updates the circuit with the new dynamic config.

func (*Circuit) Execute 

func (circuit *Circuit) Execute(tickInfo TickInfo) error

Execute runs one tick of computations of all the Components in the Circuit.

func (*Circuit) LockExecution 

func (circuit *Circuit) LockExecution()

LockExecution locks the execution of the circuit.

func (*Circuit) RegisterTickEndCallback 

func (circuit *Circuit) RegisterTickEndCallback(ec TickEndCallback)

RegisterTickEndCallback adds a callback function to be called when a tick ends.

func (*Circuit) RegisterTickStartCallback added in v0.2.1 

func (circuit *Circuit) RegisterTickStartCallback(sc TickStartCallback)

RegisterTickStartCallback adds a callback function to be called when a tick starts.

func (*Circuit) UnlockExecution 

func (circuit *Circuit) UnlockExecution()

UnlockExecution unlocks the execution of the circuit.

type CircuitAPI 

type CircuitAPI interface {
	iface.Policy
	RegisterTickEndCallback(ec TickEndCallback)
	RegisterTickStartCallback(sc TickStartCallback)
	LockExecution()
	UnlockExecution()
}

CircuitAPI is for read only access to policy and also provides methods for acquiring & releasing circuit execution lock.

type CircuitMetrics 

type CircuitMetrics struct {
	SignalSummaryVec           *prometheus.SummaryVec
	InvalidSignalReadingsTotal *prometheus.GaugeVec
}

CircuitMetrics holds prometheus metrics related circuit.

type Component 

type Component interface {
	Execute(inPortReadings PortToReading, tickInfo TickInfo) (outPortReadings PortToReading, err error)
	DynamicConfigUpdate(event notifiers.Event, unmarshaller config.Unmarshaller)
	// Generic name of the component, eg. "Gradient"
	Name() string
	Type() ComponentType
	// ShortDescription is used when generating mermaid or dot diagrams.
	ShortDescription() string
	// IsActuator returns true if the component is an actuator.
	IsActuator() bool
}

Component is the interface that all components must implement.

func NewDummyComponent added in v0.14.0 

func NewDummyComponent(name, shortDescription string, componentType ComponentType) Component

NewDummyComponent creates a component with provided name and type.

type ComponentID added in v0.21.0 

type ComponentID interface {
	String() string
	ChildID(id string) ComponentID
	ParentID() (ComponentID, bool)
}

ComponentID is a unique identifier for a component.

func NewComponentID added in v0.21.0 

func NewComponentID(id string) ComponentID

NewComponentID creates a new ComponentID.

type ComponentType 

type ComponentType string

ComponentType describes the type of a component based on its connectivity in the circuit. 

const (
	// ComponentTypeStandAlone is a component that does not accept or emit any
	// signals.
	ComponentTypeStandAlone ComponentType = "StandAlone"
	// ComponentTypeSource is a component that emits output signal(s) but does
	// not accept an input signal.
	ComponentTypeSource ComponentType = "Source"
	// ComponentTypeSink is a component that accepts input signal(s) but does
	// not emit an output signal.
	ComponentTypeSink ComponentType = "Sink"
	// ComponentTypeSignalProcessor is a component that accepts input signal(s)
	// and emits output signal(s).
	ComponentTypeSignalProcessor ComponentType = "SignalProcessor"
)

type ConfiguredComponent added in v0.15.0 

type ConfiguredComponent struct {
	Component
	// Which signals this component wants to have connected on its ports.
	PortMapping PortMapping
	// Mapstruct representation of proto config that was used to create this
	// component.  This Config is used only for observability purposes.
	//
	// Note: PortMapping is also part of Config.
	Config mapstruct.Object
	// ComponentID is the unique ID of this component within the circuit.
	ComponentID ComponentID
}

ConfiguredComponent consists of a Component and its PortMapping.

type ConstantSignal added in v0.21.0 

type ConstantSignal struct {
	Value float64 `mapstructure:"value"`
	// contains filtered or unexported fields
}

ConstantSignal is a mirror struct to same proto message.

func ConstantSignalFromProto added in v1.1.0 

func ConstantSignalFromProto(constantSignalProto *policylangv1.ConstantSignal) *ConstantSignal

ConstantSignalFromProto creates a ConstantSignal from a proto message.

func (*ConstantSignal) Description added in v1.1.0 

func (constantSignal *ConstantSignal) Description() string

Description returns a description of the constant signal.

func (*ConstantSignal) Float added in v1.1.0 

func (constantSignal *ConstantSignal) Float() float64

Float returns the float value of the constant signal.

func (*ConstantSignal) IsSpecial added in v1.4.0 

func (constantSignal *ConstantSignal) IsSpecial() bool

IsSpecial returns true if the constant signal is a special value.

type PortMapping added in v0.15.0 

type PortMapping struct {
	// Note: Not using policylangv1.InPort and OutPort directly to avoid
	// runtime depending on proto.
	Ins  PortToSignals `mapstructure:"in_ports"`
	Outs PortToSignals `mapstructure:"out_ports"`
}

PortMapping is description of a component's ports mapping.

This struct is meant to be decodable from Mapstruct representation of _any_ of the components's config. Eg. EMA component defines:

```proto 

message Ins {
  InPort input = 1;
}

Ins in_ports = 1; ... ```

And such EMA component's config could be encoded and then decoded into PortMapping as:

```go 

PortMapping {
  InPorts: map[string]InPort {
    "input": []InPort {{ ... }},
  },
}

```

Note how "input" is a concrete field in EMA definition, but a dynamic map key in PortMapping.

func NewPortMapping added in v0.21.0 

func NewPortMapping() PortMapping

NewPortMapping creates a new PortMapping.

func PortsFromComponentConfig added in v0.15.0 

func PortsFromComponentConfig(componentConfig mapstruct.Object, subCircuitID string) (PortMapping, error)

PortsFromComponentConfig extracts Ports from component's config.

func (*PortMapping) AddInPort added in v0.21.0 

func (p *PortMapping) AddInPort(portName string, signals []Signal)

AddInPort adds an input port to the PortMapping.

func (*PortMapping) AddOutPort added in v0.21.0 

func (p *PortMapping) AddOutPort(portName string, signals []Signal)

AddOutPort adds an output port to the PortMapping.

func (*PortMapping) GetInPort added in v0.21.0 

func (p *PortMapping) GetInPort(portName string) ([]Signal, bool)

GetInPort returns true if the port exists in the PortMapping.

func (*PortMapping) GetOutPort added in v0.21.0 

func (p *PortMapping) GetOutPort(portName string) ([]Signal, bool)

GetOutPort returns true if the port exists in the PortMapping.

func (*PortMapping) Merge added in v0.21.0 

func (p *PortMapping) Merge(other PortMapping) error

Merge merges two PortMappings.

type PortToReading added in v0.21.0 

type PortToReading map[string][]Reading

PortToReading is a map from port name to a slice of Readings.

func (PortToReading) ReadRepeatedReadingPort added in v0.21.0 

func (ptr PortToReading) ReadRepeatedReadingPort(portName string) []Reading

ReadRepeatedReadingPort returns the reading of all the signals at port=portName. If no signal is found, []Reading{} empty list is returned.

func (PortToReading) ReadSingleReadingPort added in v0.21.0 

func (ptr PortToReading) ReadSingleReadingPort(portName string) Reading

ReadSingleReadingPort returns the reading of the first signal at port=portName. If no signal is found, InvalidReading() is returned.

type PortToSignals added in v0.21.0 

type PortToSignals map[string][]Signal

PortToSignals is a map from port name to a list of signals.

type Reading added in v0.2.1 

type Reading interface {
	Value() float64
	Valid() bool
}

Reading is the interface that reading implements which wraps a float64 value which can be valid or invalid.

func InvalidReading added in v0.2.1 

func InvalidReading() Reading

InvalidReading creates a reading with 'value' set to math.NaN(), invalid value.

func NewBoolReading added in v1.4.0 

func NewBoolReading(value bool) Reading

NewBoolReading creates a reading with the given bool value.

func NewReading added in v0.2.1 

func NewReading(value float64) Reading

NewReading creates a reading with the given float64 value.

type Signal 

type Signal struct {
	SubCircuitID   string
	SignalName     string         `mapstructure:"signal_name"`
	ConstantSignal ConstantSignal `mapstructure:"constant_signal"`
	Looped         bool
}

Signal describes an input or output port of a component

Only one field should be set.

func (*Signal) ConstantSignalValue added in v0.21.0 

func (s *Signal) ConstantSignalValue() float64

ConstantSignalValue returns the value of the constant signal.

func (*Signal) SignalID added in v0.21.0 

func (s *Signal) SignalID() SignalID

SignalID returns the Signal ID.

func (*Signal) SignalType added in v0.5.0 

func (s *Signal) SignalType() SignalType

SignalType returns the Signal type of the port.

type SignalID added in v0.21.0 

type SignalID struct {
	SubCircuitID string
	SignalName   string
}

SignalID is a unique identifier for a signal.

func MakeRootSignalID added in v0.21.0 

func MakeRootSignalID(signalName string) SignalID

MakeRootSignalID creates SignalID with "root" SubCircuitID.

type SignalType added in v0.5.0 

type SignalType int

SignalType enum.

type TickEndCallback 

type TickEndCallback func(tickInfo TickInfo) error

TickEndCallback is a function that is called when a tick ends.

type TickInfo 

type TickInfo interface {
	Timestamp() time.Time
	Tick() int
	Interval() time.Duration
	Serialize() *policysyncv1.TickInfo
	String() string
}

TickInfo is the interface that trackInfo implements which contains information about the current tick.

func NewTickInfo added in v0.2.1 

func NewTickInfo(timestamp time.Time, tick int, interval time.Duration) TickInfo

NewTickInfo returns a Tickinfo.

type TickStartCallback added in v0.2.1 

type TickStartCallback func(tickInfo TickInfo) error

TickStartCallback is a function that is called when a tick starts.

Source Files

View all Source files

Directories

Path Synopsis
tristate is a helper package for tri-state boolean logic, which is used for logical combinator components.
 tristate is a helper package for tri-state boolean logic, which is used for logical combinator components.

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