seaweedfs/go/filer/client_operations.go

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package filer
import ()
import (
"github.com/chrislusf/weed-fs/go/util"
"encoding/json"
"errors"
"fmt"
"net/url"
)
type ApiRequest struct {
Command string //"listFiles", "listDirectories"
Directory string
FileName string
}
type ListFilesResult struct {
Files []FileEntry
Error string `json:"error,omitempty"`
}
func ListFiles(server string, directory string, fileName string) (*ListFilesResult, error) {
var ret ListFilesResult
if err := call(server, ApiRequest{Command: "listFiles", Directory: directory, FileName: fileName}, &ret); err == nil {
if ret.Error != "" {
return nil, errors.New(ret.Error)
}
return &ret, nil
} else {
return nil, err
}
}
type ListDirectoriesResult struct {
Directories []DirectoryEntry
Error string `json:"error,omitempty"`
}
func ListDirectories(server string, directory string) (*ListDirectoriesResult, error) {
var ret ListDirectoriesResult
if err := call(server, ApiRequest{Command: "listDirectories", Directory: directory}, &ret); err == nil {
if ret.Error != "" {
return nil, errors.New(ret.Error)
}
return &ret, nil
} else {
return nil, err
}
}
func call(server string, request ApiRequest, ret interface{}) error {
b, err := json.Marshal(request)
if err != nil {
fmt.Println("error:", err)
return nil
}
values := make(url.Values)
values.Add("request", string(b))
jsonBlob, err := util.Post("http://"+server+"/__api__", values)
if err != nil {
return err
}
err = json.Unmarshal(jsonBlob, ret)
if err != nil {
return err
}
return nil
}