// wrapper for errorutil that handles missing sources sanely and resets the reader afterwards
func posFromOffset(offset int, source io.ReadSeeker) (int, int, string) {
if source == nil {
return 0, 0, ""
}
line, col, highlight := errorutil.HighlightBytePosition(source, int64(offset))
source.Seek(0, 0) // Reset the reader to the start so the next call isn't relative to this position
return line, col, highlight
}
func (pm *PodManifest) UnmarshalJSON(data []byte) error {
p := podManifest(*pm)
err := json.Unmarshal(data, &p)
if err != nil {
if serr, ok := err.(*json.SyntaxError); ok {
line, col, highlight := errorutil.HighlightBytePosition(bytes.NewReader(data), serr.Offset)
return fmt.Errorf("\nError at line %d, column %d\n%s%v", line, col, highlight, err)
}
return err
}
npm := PodManifest(p)
if err := npm.assertValid(); err != nil {
return err
}
*pm = npm
return nil
}
func ParseFromLatest(rawConfig []byte) (config types.Config, err error) {
if err = json.Unmarshal(rawConfig, &config); err == nil {
err = config.Ignition.Version.AssertValid()
} else if isEmpty(rawConfig) {
err = ErrEmpty
} else if isCloudConfig(rawConfig) {
err = ErrCloudConfig
} else if isScript(rawConfig) {
err = ErrScript
}
if serr, ok := err.(*json.SyntaxError); ok {
line, col, highlight := errorutil.HighlightBytePosition(bytes.NewReader(rawConfig), serr.Offset)
err = fmt.Errorf("error at line %d, column %d\n%s%v", line, col, highlight, err)
}
return
}
func (im *ImageManifest) UnmarshalJSON(data []byte) error {
a := imageManifest(*im)
err := json.Unmarshal(data, &a)
if err != nil {
if serr, ok := err.(*json.SyntaxError); ok {
line, col, highlight := errorutil.HighlightBytePosition(bytes.NewReader(data), serr.Offset)
return fmt.Errorf("\nError at line %d, column %d\n%s%v", line, col, highlight, err)
}
return err
}
nim := ImageManifest(a)
if err := nim.assertValid(); err != nil {
return err
}
*im = nim
return nil
}
// Decodes and evaluates a json config file, watching for include cycles.
func (c *ConfigParser) recursiveReadJSON(configPath string) (decodedObject map[string]interface{}, err error) {
if configPath != "" {
absConfigPath, err := filepath.Abs(configPath)
if err != nil {
return nil, fmt.Errorf("Failed to expand absolute path for %s", configPath)
}
if c.touchedFiles[absConfigPath] {
return nil, fmt.Errorf("ConfigParser include cycle detected reading config: %v",
absConfigPath)
}
c.touchedFiles[absConfigPath] = true
c.includeStack.Push(absConfigPath)
defer c.includeStack.Pop()
}
var f File
if f, err = c.open(configPath); err != nil {
return nil, fmt.Errorf("Failed to open config: %v", err)
}
defer f.Close()
decodedObject = make(map[string]interface{})
dj := json.NewDecoder(f)
if err = dj.Decode(&decodedObject); err != nil {
extra := ""
if serr, ok := err.(*json.SyntaxError); ok {
if _, serr := f.Seek(0, os.SEEK_SET); serr != nil {
log.Fatalf("seek error: %v", serr)
}
line, col, highlight := errorutil.HighlightBytePosition(f, serr.Offset)
extra = fmt.Sprintf(":\nError at line %d, column %d (file offset %d):\n%s",
line, col, serr.Offset, highlight)
}
return nil, fmt.Errorf("error parsing JSON object in config file %s%s\n%v",
f.Name(), extra, err)
}
if err = c.evaluateExpressions(decodedObject, nil, false); err != nil {
return nil, fmt.Errorf("error expanding JSON config expressions in %s:\n%v",
f.Name(), err)
}
return decodedObject, nil
}
func ParseFromLatest(rawConfig []byte) (types.Config, report.Report, error) {
if isEmpty(rawConfig) {
return types.Config{}, report.Report{}, ErrEmpty
} else if isCloudConfig(rawConfig) {
return types.Config{}, report.Report{}, ErrCloudConfig
} else if isScript(rawConfig) {
return types.Config{}, report.Report{}, ErrScript
}
var err error
var config types.Config
// These errors are fatal and the config should not be further validated
if err = json.Unmarshal(rawConfig, &config); err == nil {
versionReport := config.Ignition.Version.Validate()
if versionReport.IsFatal() {
return types.Config{}, versionReport, ErrInvalid
}
}
// Handle json syntax and type errors first, since they are fatal but have offset info
if serr, ok := err.(*json.SyntaxError); ok {
line, col, highlight := errorutil.HighlightBytePosition(bytes.NewReader(rawConfig), serr.Offset)
return types.Config{},
report.Report{
Entries: []report.Entry{{
Kind: report.EntryError,
Message: serr.Error(),
Line: line,
Column: col,
Highlight: highlight,
}},
},
ErrInvalid
}
if terr, ok := err.(*json.UnmarshalTypeError); ok {
line, col, highlight := errorutil.HighlightBytePosition(bytes.NewReader(rawConfig), terr.Offset)
return types.Config{},
report.Report{
Entries: []report.Entry{{
Kind: report.EntryError,
Message: terr.Error(),
Line: line,
Column: col,
Highlight: highlight,
}},
},
ErrInvalid
}
// Handle other fatal errors (i.e. invalid version)
if err != nil {
return types.Config{}, report.ReportFromError(err, report.EntryError), err
}
// Unmarshal again to a json.Node to get offset information for building a report
var ast json.Node
var r report.Report
configValue := reflect.ValueOf(config)
if err := json.Unmarshal(rawConfig, &ast); err != nil {
r.Add(report.Entry{
Kind: report.EntryWarning,
Message: "Ignition could not unmarshal your config for reporting line numbers. This should never happen. Please file a bug.",
})
r.Merge(validate.ValidateWithoutSource(configValue))
} else {
r.Merge(validate.Validate(configValue, astjson.FromJsonRoot(ast), bytes.NewReader(rawConfig)))
}
if r.IsFatal() {
return types.Config{}, r, ErrInvalid
}
return config, r, nil
}