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Index ¶
Constants ¶
This section is empty.
Variables ¶
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Functions ¶
func GetCompiler ¶
func GetCompiler() *compiler
Types ¶
type Cache ¶ added in v0.32.0
type Cache struct {
// contains filtered or unexported fields
}
Cache is a thread-safe LRU cache for a compiled CEL expression.
func NewCache ¶ added in v0.32.0
NewCache creates a cache. The maximum number of entries determines how many entries are cached at most before dropping the oldest entry.
func (*Cache) GetOrCompile ¶ added in v0.32.0
func (c *Cache) GetOrCompile(expression string) CompilationResult
GetOrCompile checks whether the cache already has a compilation result and returns that if available. Otherwise it compiles, stores successful results and returns the new result.
Cost estimation is disabled.
type CompilationResult ¶
type CompilationResult struct {
Program cel.Program
Error *apiservercel.Error
Expression string
OutputType *cel.Type
Environment *cel.Env
// MaxCost represents the worst-case cost of the compiled MessageExpression in terms of CEL's cost units,
// as used by cel.EstimateCost.
MaxCost uint64
// contains filtered or unexported fields
}
CompilationResult represents a compiled expression.
func (CompilationResult) DeviceMatches ¶
func (c CompilationResult) DeviceMatches(ctx context.Context, input Device) (bool, *cel.EvalDetails, error)
type Device ¶
type Device struct {
// Driver gets used as domain for any attribute which does not already
// have a domain prefix. If set, then it is also made available as a
// string attribute.
Driver string
Attributes map[resourceapi.QualifiedName]resourceapi.DeviceAttribute
Capacity map[resourceapi.QualifiedName]resourceapi.DeviceCapacity
}
Device defines the input values for a CEL selector expression.
type Options ¶ added in v0.32.0
type Options struct {
// EnvType allows to override the default environment type [environment.StoredExpressions].
EnvType *environment.Type
// CostLimit allows overriding the default runtime cost limit [resourceapi.CELSelectorExpressionMaxCost].
CostLimit *uint64
// DisableCostEstimation can be set to skip estimating the worst-case CEL cost.
// If disabled or after an error, [CompilationResult.MaxCost] will be set to [math.Uint64].
DisableCostEstimation bool
}
Options contains several additional parameters for [CompileCELExpression]. All of them have reasonable defaults.
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