/
client.go
39 lines (31 loc) · 904 Bytes
/
client.go
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package client
import (
"context"
"io"
pkgerrs "github.com/pkg/errors"
)
var (
clientConstructors = map[string]Constructor{}
)
type ChangedCallback func(data []byte)
// Client client interface of baseSource
type Client interface {
io.Closer
Pull(ctx context.Context, path string) (data []byte, err error)
Push(ctx context.Context, path string, data []byte) error
Watch(path string, cb ChangedCallback) error
}
type Constructor func(config *Config) (Client, error)
func RegisterClient(name string, constructor Constructor) error {
clientConstructors[name] = constructor
return nil
}
func New(name string, config *Config) (Client, error) {
if config == nil {
config = DefaultConfig()
}
if c, ok := clientConstructors[name]; ok {
return c(config)
}
return nil, pkgerrs.Errorf("client constructor of %q not exists", name)
}