// EvalPredicate - Evaluate a given expression as a boolean predicate against a set of fields and tags
func EvalPredicate(se stateful.Expression, scopePool stateful.ScopePool, now time.Time, fields models.Fields, tags models.Tags) (bool, error) {
vars := scopePool.Get()
defer scopePool.Put(vars)
err := fillScope(vars, scopePool.ReferenceVariables(), now, fields, tags)
if err != nil {
return false, err
}
b, err := se.EvalBool(vars)
if err != nil {
return false, err
}
return b, nil
}
// evalInt - Evaluate a given expression as an int64 against a set of fields and tags.
// The CurrentField is also set on the scope if not empty.
func (k *K8sAutoscaleNode) evalInt(current int64, se stateful.Expression, scopePool stateful.ScopePool, now time.Time, fields models.Fields, tags models.Tags) (int64, error) {
vars := scopePool.Get()
defer scopePool.Put(vars)
// Set the current replicas value on the scope if requested.
if k.k.CurrentField != "" {
vars.Set(k.k.CurrentField, current)
}
// Fill the scope with the rest of the values
err := fillScope(vars, scopePool.ReferenceVariables(), now, fields, tags)
if err != nil {
return 0, err
}
i, err := se.EvalInt(vars)
if err != nil {
return 0, err
}
return i, nil
}