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Merge pull request #15109 from kevishi/new-config-reader

Browse source 
Added support for creating a cliconfig.ConfigFile via io.Reader
This commit is contained in:
David Calavera 2015-08-07 14:43:55 -07:00
commit 1e2765dabb
2 changed files with 198 additions and 58 deletions
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163
cliconfig/config.go
View file

@ -4,6 +4,7 @@ import (
"encoding/base64"
"encoding/json"
"fmt"
"io"
"io/ioutil"
"os"
"path/filepath"
@ -70,6 +71,88 @@ func NewConfigFile(fn string) *ConfigFile {
}
}
// LegacyLoadFromReader reads the non-nested configuration data given and sets up the
// auth config information with given directory and populates the receiver object
func (configFile *ConfigFile) LegacyLoadFromReader(configData io.Reader) error {
b, err := ioutil.ReadAll(configData)
if err != nil {
return err
}
if err := json.Unmarshal(b, &configFile.AuthConfigs); err != nil {
arr := strings.Split(string(b), "\n")
if len(arr) < 2 {
return fmt.Errorf("The Auth config file is empty")
}
authConfig := AuthConfig{}
origAuth := strings.Split(arr[0], " = ")
if len(origAuth) != 2 {
return fmt.Errorf("Invalid Auth config file")
}
authConfig.Username, authConfig.Password, err = DecodeAuth(origAuth[1])
if err != nil {
return err
}
origEmail := strings.Split(arr[1], " = ")
if len(origEmail) != 2 {
return fmt.Errorf("Invalid Auth config file")
}
authConfig.Email = origEmail[1]
authConfig.ServerAddress = defaultIndexserver
configFile.AuthConfigs[defaultIndexserver] = authConfig
} else {
for k, authConfig := range configFile.AuthConfigs {
authConfig.Username, authConfig.Password, err = DecodeAuth(authConfig.Auth)
if err != nil {
return err
}
authConfig.Auth = ""
authConfig.ServerAddress = k
configFile.AuthConfigs[k] = authConfig
}
}
return nil
}
// LoadFromReader reads the configuration data given and sets up the auth config
// information with given directory and populates the receiver object
func (configFile *ConfigFile) LoadFromReader(configData io.Reader) error {
if err := json.NewDecoder(configData).Decode(&configFile); err != nil {
return err
}
var err error
for addr, ac := range configFile.AuthConfigs {
ac.Username, ac.Password, err = DecodeAuth(ac.Auth)
if err != nil {
return err
}
ac.Auth = ""
ac.ServerAddress = addr
configFile.AuthConfigs[addr] = ac
}
return nil
}
// LegacyLoadFromReader is a convenience function that creates a ConfigFile object from
// a non-nested reader
func LegacyLoadFromReader(configData io.Reader) (*ConfigFile, error) {
configFile := ConfigFile{
AuthConfigs: make(map[string]AuthConfig),
}
err := configFile.LegacyLoadFromReader(configData)
return &configFile, err
}
// LoadFromReader is a convenience function that creates a ConfigFile object from
// a reader
func LoadFromReader(configData io.Reader) (*ConfigFile, error) {
configFile := ConfigFile{
AuthConfigs: make(map[string]AuthConfig),
}
err := configFile.LoadFromReader(configData)
return &configFile, err
}
// Load reads the configuration files in the given directory, and sets up
// the auth config information and return values.
// FIXME: use the internal golang config parser
@ -90,22 +173,8 @@ func Load(configDir string) (*ConfigFile, error) {
return &configFile, err
}
defer file.Close()
if err := json.NewDecoder(file).Decode(&configFile); err != nil {
return &configFile, err
}
for addr, ac := range configFile.AuthConfigs {
ac.Username, ac.Password, err = DecodeAuth(ac.Auth)
if err != nil {
return &configFile, err
}
ac.Auth = ""
ac.ServerAddress = addr
configFile.AuthConfigs[addr] = ac
}
return &configFile, nil
err = configFile.LoadFromReader(file)
return &configFile, err
} else if !os.IsNotExist(err) {
// if file is there but we can't stat it for any reason other
// than it doesn't exist then stop
@ -117,49 +186,18 @@ func Load(configDir string) (*ConfigFile, error) {
if _, err := os.Stat(confFile); err != nil {
return &configFile, nil //missing file is not an error
}
b, err := ioutil.ReadFile(confFile)
file, err := os.Open(confFile)
if err != nil {
return &configFile, err
}
if err := json.Unmarshal(b, &configFile.AuthConfigs); err != nil {
arr := strings.Split(string(b), "\n")
if len(arr) < 2 {
return &configFile, fmt.Errorf("The Auth config file is empty")
}
authConfig := AuthConfig{}
origAuth := strings.Split(arr[0], " = ")
if len(origAuth) != 2 {
return &configFile, fmt.Errorf("Invalid Auth config file")
}
authConfig.Username, authConfig.Password, err = DecodeAuth(origAuth[1])
if err != nil {
return &configFile, err
}
origEmail := strings.Split(arr[1], " = ")
if len(origEmail) != 2 {
return &configFile, fmt.Errorf("Invalid Auth config file")
}
authConfig.Email = origEmail[1]
authConfig.ServerAddress = defaultIndexserver
configFile.AuthConfigs[defaultIndexserver] = authConfig
} else {
for k, authConfig := range configFile.AuthConfigs {
authConfig.Username, authConfig.Password, err = DecodeAuth(authConfig.Auth)
if err != nil {
return &configFile, err
}
authConfig.Auth = ""
authConfig.ServerAddress = k
configFile.AuthConfigs[k] = authConfig
}
}
return &configFile, nil
defer file.Close()
err = configFile.LegacyLoadFromReader(file)
return &configFile, err
}
// Save encodes and writes out all the authorization information
func (configFile *ConfigFile) Save() error {
// SaveToWriter encodes and writes out all the authorization information to
// the given writer
func (configFile *ConfigFile) SaveToWriter(writer io.Writer) error {
// Encode sensitive data into a new/temp struct
tmpAuthConfigs := make(map[string]AuthConfig, len(configFile.AuthConfigs))
for k, authConfig := range configFile.AuthConfigs {
@ -180,16 +218,25 @@ func (configFile *ConfigFile) Save() error {
if err != nil {
return err
}
_, err = writer.Write(data)
return err
}
// Save encodes and writes out all the authorization information
func (configFile *ConfigFile) Save() error {
if configFile.Filename() == "" {
return fmt.Errorf("Can't save config with empty filename")
}
if err := system.MkdirAll(filepath.Dir(configFile.filename), 0700); err != nil {
return err
}
if err := ioutil.WriteFile(configFile.filename, data, 0600); err != nil {
f, err := os.OpenFile(configFile.filename, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0600)
if err != nil {
return err
}
return nil
defer f.Close()
return configFile.SaveToWriter(f)
}
// Filename returns the name of the configuration file

93
cliconfig/config_test.go
View file

@ -353,3 +353,96 @@ func TestConfigFile(t *testing.T) {
t.Fatalf("Expected %s, got %s", configFilename, configFile.Filename())
}
}
func TestJsonReaderNoFile(t *testing.T) {
js := ` { "auths": { "https://index.docker.io/v1/": { "auth": "am9lam9lOmhlbGxv", "email": "user@example.com" } } }`
config, err := LoadFromReader(strings.NewReader(js))
if err != nil {
t.Fatalf("Failed loading on empty json file: %q", err)
}
ac := config.AuthConfigs["https://index.docker.io/v1/"]
if ac.Email != "user@example.com" || ac.Username != "joejoe" || ac.Password != "hello" {
t.Fatalf("Missing data from parsing:\n%q", config)
}
}
func TestOldJsonReaderNoFile(t *testing.T) {
js := `{"https://index.docker.io/v1/":{"auth":"am9lam9lOmhlbGxv","email":"user@example.com"}}`
config, err := LegacyLoadFromReader(strings.NewReader(js))
if err != nil {
t.Fatalf("Failed loading on empty json file: %q", err)
}
ac := config.AuthConfigs["https://index.docker.io/v1/"]
if ac.Email != "user@example.com" || ac.Username != "joejoe" || ac.Password != "hello" {
t.Fatalf("Missing data from parsing:\n%q", config)
}
}
func TestJsonWithPsFormatNoFile(t *testing.T) {
js := `{
"auths": { "https://index.docker.io/v1/": { "auth": "am9lam9lOmhlbGxv", "email": "user@example.com" } },
"psFormat": "table {{.ID}}\\t{{.Label \"com.docker.label.cpu\"}}"
}`
config, err := LoadFromReader(strings.NewReader(js))
if err != nil {
t.Fatalf("Failed loading on empty json file: %q", err)
}
if config.PsFormat != `table {{.ID}}\t{{.Label "com.docker.label.cpu"}}` {
t.Fatalf("Unknown ps format: %s\n", config.PsFormat)
}
}
func TestJsonSaveWithNoFile(t *testing.T) {
js := `{
"auths": { "https://index.docker.io/v1/": { "auth": "am9lam9lOmhlbGxv", "email": "user@example.com" } },
"psFormat": "table {{.ID}}\\t{{.Label \"com.docker.label.cpu\"}}"
}`
config, err := LoadFromReader(strings.NewReader(js))
err = config.Save()
if err == nil {
t.Fatalf("Expected error. File should not have been able to save with no file name.")
}
tmpHome, _ := ioutil.TempDir("", "config-test")
fn := filepath.Join(tmpHome, ConfigFileName)
f, _ := os.OpenFile(fn, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0600)
err = config.SaveToWriter(f)
if err != nil {
t.Fatalf("Failed saving to file: %q", err)
}
buf, err := ioutil.ReadFile(filepath.Join(tmpHome, ConfigFileName))
if !strings.Contains(string(buf), `"auths":`) ||
!strings.Contains(string(buf), "user@example.com") {
t.Fatalf("Should have save in new form: %s", string(buf))
}
}
func TestLegacyJsonSaveWithNoFile(t *testing.T) {
js := `{"https://index.docker.io/v1/":{"auth":"am9lam9lOmhlbGxv","email":"user@example.com"}}`
config, err := LegacyLoadFromReader(strings.NewReader(js))
err = config.Save()
if err == nil {
t.Fatalf("Expected error. File should not have been able to save with no file name.")
}
tmpHome, _ := ioutil.TempDir("", "config-test")
fn := filepath.Join(tmpHome, ConfigFileName)
f, _ := os.OpenFile(fn, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0600)
err = config.SaveToWriter(f)
if err != nil {
t.Fatalf("Failed saving to file: %q", err)
}
buf, err := ioutil.ReadFile(filepath.Join(tmpHome, ConfigFileName))
if !strings.Contains(string(buf), `"auths":`) ||
!strings.Contains(string(buf), "user@example.com") {
t.Fatalf("Should have save in new form: %s", string(buf))
}
}