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checks.go
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checks.go
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package actions
import (
"fmt"
"github.com/elastic/beats/libbeat/common"
"github.com/elastic/beats/libbeat/processors"
)
func configChecked(
constr processors.Constructor,
checks ...func(common.Config) error,
) processors.Constructor {
validator := checkAll(checks...)
return func(c common.Config) (processors.Processor, error) {
err := validator(c)
if err != nil {
return nil, fmt.Errorf("%v in %v", err.Error(), c.Path())
}
return constr(c)
}
}
func checkAll(checks ...func(common.Config) error) func(common.Config) error {
return func(c common.Config) error {
for _, check := range checks {
if err := check(c); err != nil {
return err
}
}
return nil
}
}
func requireFields(fields ...string) func(common.Config) error {
return func(c common.Config) error {
for _, field := range fields {
if !c.HasField(field) {
return fmt.Errorf("missing %v option", field)
}
}
return nil
}
}
func allowedFields(fields ...string) func(common.Config) error {
return func(c common.Config) error {
for _, field := range c.GetFields() {
found := false
for _, allowed := range fields {
if field == allowed {
found = true
break
}
}
if !found {
return fmt.Errorf("unexpected %v option", field)
}
}
return nil
}
}