micro/config/loader/loader.go

64 lines
1.3 KiB
Go
Raw Normal View History

2019-05-31 01:11:13 +03:00
// package loader manages loading from multiple sources
package loader
import (
"context"
"github.com/micro/go-micro/config/reader"
"github.com/micro/go-micro/config/source"
)
// Loader manages loading sources
type Loader interface {
// Stop the loader
Close() error
// Load the sources
Load(...source.Source) error
// A Snapshot of loaded config
Snapshot() (*Snapshot, error)
// Force sync of sources
Sync() error
// Watch for changes
Watch(...string) (Watcher, error)
// Name of loader
String() string
}
// Watcher lets you watch sources and returns a merged ChangeSet
type Watcher interface {
// First call to next may return the current Snapshot
// If you are watching a path then only the data from
// that path is returned.
Next() (*Snapshot, error)
// Stop watching for changes
Stop() error
}
// Snapshot is a merged ChangeSet
type Snapshot struct {
// The merged ChangeSet
ChangeSet *source.ChangeSet
// Deterministic and comparable version of the snapshot
Version string
}
type Options struct {
Reader reader.Reader
Source []source.Source
// for alternative data
Context context.Context
}
type Option func(o *Options)
// Copy snapshot
func Copy(s *Snapshot) *Snapshot {
cs := *(s.ChangeSet)
return &Snapshot{
ChangeSet: &cs,
Version: s.Version,
}
}