/
msg.go
156 lines (130 loc) · 4.3 KB
/
msg.go
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package goshared
const msgTpl = `
{{ if disabled . -}}
{{ cmt "Validate is disabled for " (msgTyp .) ". This method will always return nil." }}
{{- else -}}
{{ cmt "Validate checks the field values on " (msgTyp .) " with the rules defined in the proto definition for this message. If any rules are violated, an error is returned." }}
{{- end -}}
func (m {{ (msgTyp .).Pointer }}) Validate() error {
{{ if disabled . -}}
return nil
{{ else -}}
if m == nil { return nil }
{{ range .NonOneOfFields }}
{{ render (context .) }}
{{ end }}
{{ range .OneOfs }}
switch m.{{ name . }}.(type) {
{{ range .Fields }}
case {{ oneof . }}:
{{ render (context .) }}
{{ end }}
{{ if required . }}
default:
return {{ errname .Message }}{
field: "{{ name . }}",
reason: "value is required",
}
{{ end }}
}
{{ end }}
return nil
{{ end -}}
}
{{ if needs . "hostname" }}{{ template "hostname" . }}{{ end }}
{{ if needs . "email" }}{{ template "email" . }}{{ end }}
{{ cmt (errname .) " is the validation error returned by " (msgTyp .) ".Validate if the designated constraints aren't met." -}}
type {{ errname . }} struct {
field string
reason string
cause error
key bool
}
// Field function returns field value.
func (e {{ errname . }}) Field() string { return e.field }
// Reason function returns reason value.
func (e {{ errname . }}) Reason() string { return e.reason }
// Cause function returns cause value.
func (e {{ errname . }}) Cause() error { return e.cause }
// Key function returns key value.
func (e {{ errname . }}) Key() bool { return e.key }
// ErrorName returns error name.
func (e {{ errname . }}) ErrorName() string { return "{{ errname . }}" }
// Error satisfies the builtin error interface
func (e {{ errname . }}) Error() string {
cause := ""
if e.cause != nil {
cause = fmt.Sprintf(" | caused by: %v", e.cause)
}
key := ""
if e.key {
key = "key for "
}
return fmt.Sprintf(
"invalid %s{{ (msgTyp .) }}.%s: %s%s",
key,
e.field,
e.reason,
cause)
}
var _ error = {{ errname . }}{}
var _ interface{
Field() string
Reason() string
Key() bool
Cause() error
ErrorName() string
} = {{ errname . }}{}
{{ range .Fields }}{{ with (context .) }}{{ $f := .Field }}
{{ if has .Rules "In" }}{{ if .Rules.In }}
var {{ lookup .Field "InLookup" }} = map[{{ inType .Field .Rules.In }}]struct{}{
{{- range .Rules.In }}
{{ inKey $f . }}: {},
{{- end }}
}
{{ end }}{{ end }}
{{ if has .Rules "NotIn" }}{{ if .Rules.NotIn }}
var {{ lookup .Field "NotInLookup" }} = map[{{ inType .Field .Rules.In }}]struct{}{
{{- range .Rules.NotIn }}
{{ inKey $f . }}: {},
{{- end }}
}
{{ end }}{{ end }}
{{ if has .Rules "Pattern"}}{{ if .Rules.Pattern }}
var {{ lookup .Field "Pattern" }} = regexp.MustCompile({{ lit .Rules.GetPattern }})
{{ end }}{{ end }}
{{ if has .Rules "Items"}}{{ if .Rules.Items }}
{{ if has .Rules.Items.GetString_ "Pattern" }} {{ if .Rules.Items.GetString_.Pattern }}
var {{ lookup .Field "Pattern" }} = regexp.MustCompile({{ lit .Rules.Items.GetString_.GetPattern }})
{{ end }}{{ end }}
{{ end }}{{ end }}
{{ if has .Rules "Items"}}{{ if .Rules.Items }}
{{ if has .Rules.Items.GetString_ "In" }} {{ if .Rules.Items.GetString_.In }}
var {{ lookup .Field "InLookup" }} = map[string]struct{}{
{{- range .Rules.Items.GetString_.In }}
{{ inKey $f . }}: {},
{{- end }}
}
{{ end }}{{ end }}
{{ end }}{{ end }}
{{ if has .Rules "Items"}}{{ if .Rules.Items }}
{{ if has .Rules.Items.GetString_ "NotIn" }} {{ if .Rules.Items.GetString_.NotIn }}
var {{ lookup .Field "NotInLookup" }} = map[string]struct{}{
{{- range .Rules.Items.GetString_.NotIn }}
{{ inKey $f . }}: {},
{{- end }}
}
{{ end }}{{ end }}
{{ end }}{{ end }}
{{ if has .Rules "Keys"}}{{ if .Rules.Keys }}
{{ if has .Rules.Keys.GetString_ "Pattern" }} {{ if .Rules.Keys.GetString_.Pattern }}
var {{ lookup .Field "Pattern" }} = regexp.MustCompile({{ lit .Rules.Keys.GetString_.GetPattern }})
{{ end }}{{ end }}
{{ end }}{{ end }}
{{ if has .Rules "Values"}}{{ if .Rules.Values }}
{{ if has .Rules.Values.GetString_ "Pattern" }} {{ if .Rules.Values.GetString_.Pattern }}
var {{ lookup .Field "Pattern" }} = regexp.MustCompile({{ lit .Rules.Values.GetString_.GetPattern }})
{{ end }}{{ end }}
{{ end }}{{ end }}
{{ end }}{{ end }}
`