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spec.go
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spec.go
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package artifact
import (
"encoding/json"
"io"
"os"
"strings"
"time"
"github.com/pkg/errors"
)
var (
// ErrFileNotFound indicates that an artifact was not found.
ErrFileNotFound = errors.New("file not found")
// ErrNotParsable indicates that an artifact could not be parsed against the
// artifact specification.
ErrNotParsable = errors.New("artifact not parsable")
// ErrUnknownFields indicates that an artifact contains an unknown field.
ErrUnknownFields = errors.New("artifact contains unknown fields")
)
type Spec struct {
ID string `json:"id,omitempty"`
Service string `json:"service,omitempty"`
Namespace string `json:"namespace,omitempty"`
Application Repository `json:"application,omitempty"`
CI CI `json:"ci,omitempty"`
Squad string `json:"squad,omitempty"`
Shuttle Shuttle `json:"shuttle,omitempty"`
Stages []Stage `json:"stages,omitempty"`
}
type Repository struct {
Branch string `json:"branch,omitempty"`
SHA string `json:"sha,omitempty"`
AuthorName string `json:"authorName,omitempty"`
AuthorEmail string `json:"authorEmail,omitempty"`
CommitterName string `json:"committerName,omitempty"`
CommitterEmail string `json:"committerEmail,omitempty"`
Message string `json:"message,omitempty"`
Name string `json:"name,omitempty"`
URL string `json:"url,omitempty"`
Provider string `json:"provider,omitempty"`
}
type Shuttle struct {
Plan Repository `json:"plan,omitempty"`
ShuttleVersion string `json:"shuttleVersion,omitempty"`
}
type CI struct {
JobURL string `json:"jobUrl,omitempty"`
Start time.Time `json:"start,omitempty"`
End time.Time `json:"end,omitempty"`
}
type Stage struct {
ID string `json:"id,omitempty"`
Name string `json:"name,omitempty"`
Data interface{} `json:"data,omitempty"`
}
type BuildData struct {
Image string `json:"image,omitempty"`
Tag string `json:"tag,omitempty"`
DockerVersion string `json:"dockerVersion,omitempty"`
}
type PushData struct {
Image string `json:"image,omitempty"`
Tag string `json:"tag,omitempty"`
DockerVersion string `json:"dockerVersion,omitempty"`
}
type TestData struct {
URL string `json:"url,omitempty"`
Results TestResult `json:"results,omitempty"`
}
type TestResult struct {
Passed int `json:"passed"`
Failed int `json:"failed"`
Skipped int `json:"skipped"`
}
type SnykDockerData struct {
Tag string `json:"tag,omitempty"`
SnykVersion string `json:"snykVersion,omitempty"`
URL string `json:"url,omitempty"`
BaseImage string `json:"baseImage,omitempty"`
Vulnerabilities VulnerabilityResult `json:"vulnerabilities,omitempty"`
}
type SnykCodeData struct {
SnykVersion string `json:"snykVersion,omitempty"`
URL string `json:"url,omitempty"`
Language string `json:"language,omitempty"`
Vulnerabilities VulnerabilityResult `json:"vulnerabilities,omitempty"`
}
type VulnerabilityResult struct {
High int `json:"high"`
Medium int `json:"medium"`
Low int `json:"low"`
}
// GetStage returns a stage of the spec with provided stage ID.
func (s *Spec) GetStage(stageID string) (Stage, bool) {
for _, stage := range s.Stages {
if stage.ID == stageID {
return stage, true
}
}
return Stage{}, false
}
func Get(path string) (Spec, error) {
s, err := os.Open(path)
if err != nil {
if os.IsNotExist(err) {
return Spec{}, ErrFileNotFound
}
return Spec{}, err
}
defer s.Close()
return Decode(s)
}
func Persist(path string, spec Spec) error {
s, err := os.OpenFile(path, os.O_CREATE|os.O_RDWR, os.ModePerm)
if err != nil {
return errors.WithMessage(err, "open file")
}
defer s.Close()
encode := json.NewEncoder(s)
encode.SetIndent("", " ")
err = encode.Encode(spec)
if err != nil {
return errors.WithMessage(err, "encode spec to json")
}
return nil
}
func Update(path string, f func(Spec) Spec) error {
s, err := Get(path)
if err != nil {
return errors.WithMessagef(err, "read artifact '%s'", path)
}
s = f(s)
// Persist back to the file
err = Persist(path, s)
if err != nil {
return errors.WithMessagef(err, "persiste artifact to '%s'", path)
}
return nil
}
func Encode(spec Spec, pretty bool) (string, error) {
var jsonOutput []byte
var err error
if pretty {
jsonOutput, err = json.MarshalIndent(spec, "", " ")
} else {
jsonOutput, err = json.Marshal(spec)
}
if err != nil {
return "", errors.WithMessage(err, "encode spec to json")
}
return string(jsonOutput), nil
}
func Decode(reader io.Reader) (Spec, error) {
var fileSpec Spec
decoder := json.NewDecoder(reader)
decoder.DisallowUnknownFields()
err := decoder.Decode(&fileSpec)
if err != nil {
_, ok := err.(*json.SyntaxError)
if ok {
return Spec{}, ErrNotParsable
}
// there is no other way to detect this error type unfortunately
// https://github.com/golang/go/blob/277609f844ed9254d25e975f7cf202d042beecc6/src/encoding/json/decode.go#L739
if strings.HasPrefix(err.Error(), "json: unknown field") {
return Spec{}, errors.WithMessagef(ErrUnknownFields, "%v", err)
}
return Spec{}, err
}
return fileSpec, nil
}