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registry.go
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registry.go
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package prospector
import (
"fmt"
"github.com/elastic/beats/filebeat/channel"
"github.com/elastic/beats/filebeat/input/file"
"github.com/elastic/beats/libbeat/common"
"github.com/elastic/beats/libbeat/logp"
)
type Context struct {
States []file.State
Done chan struct{}
BeatDone chan struct{}
DynamicFields *common.MapStrPointer
}
type Factory func(config *common.Config, outletFactory channel.Factory, context Context) (Prospectorer, error)
var registry = make(map[string]Factory)
func Register(name string, factory Factory) error {
logp.Info("Registering prospector factory")
if name == "" {
return fmt.Errorf("Error registering prospector: name cannot be empty")
}
if factory == nil {
return fmt.Errorf("Error registering prospector '%v': factory cannot be empty", name)
}
if _, exists := registry[name]; exists {
return fmt.Errorf("Error registering prospector '%v': already registered", name)
}
registry[name] = factory
logp.Info("Successfully registered prospector")
return nil
}
func GetFactory(name string) (Factory, error) {
if _, exists := registry[name]; !exists {
return nil, fmt.Errorf("Error creating prospector. No such prospector type exist: '%v'", name)
}
return registry[name], nil
}