/
funcfile.go
182 lines (158 loc) · 4.88 KB
/
funcfile.go
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package common
import (
"encoding/json"
"errors"
"fmt"
"io/ioutil"
"os"
"path/filepath"
"strings"
"time"
bumper "github.com/giantswarm/semver-bump/bump"
"github.com/giantswarm/semver-bump/storage"
yaml "gopkg.in/yaml.v2"
)
var (
Validfn = [...]string{
"func.yaml",
"func.yml",
"func.json",
}
errUnexpectedFileFormat = errors.New("unexpected file format for function file")
)
type fftest struct {
Name string `yaml:"name,omitempty" json:"name,omitempty"`
In *string `yaml:"in,omitempty" json:"in,omitempty"`
Out *string `yaml:"out,omitempty" json:"out,omitempty"`
Err *string `yaml:"err,omitempty" json:"err,omitempty"`
Env map[string]string `yaml:"env,omitempty" json:"env,omitempty"`
}
type Funcfile struct {
Name string `yaml:"name,omitempty" json:"name,omitempty"`
Version string `yaml:"version,omitempty" json:"version,omitempty"`
Runtime *string `yaml:"runtime,omitempty" json:"runtime,omitempty"`
Entrypoint string `yaml:"entrypoint,omitempty" json:"entrypoint,omitempty"`
Cmd string `yaml:"cmd,omitempty" json:"cmd,omitempty"`
Type *string `yaml:"type,omitempty" json:"type,omitempty"`
Memory *int64 `yaml:"memory,omitempty" json:"memory,omitempty"`
Format *string `yaml:"format,omitempty" json:"format,omitempty"`
Timeout *time.Duration `yaml:"timeout,omitempty" json:"timeout,omitempty"`
IDLETimeout *time.Duration `yaml:"idle_timeout,omitempty" json:"idle_timeout,omitempty"`
Headers map[string]string `yaml:"headers,omitempty" json:"headers,omitempty"`
Config map[string]string `yaml:"config,omitempty" json:"config,omitempty"`
Build []string `yaml:"build,omitempty" json:"build,omitempty"`
Tests []fftest `yaml:"tests,omitempty" json:"tests,omitempty"`
Path *string `yaml:"path,omitempty" json:"path,omitempty"`
MaxConcurrency *int `yaml:"max_concurrency,omitempty" json:"max_concurrency,omitempty"`
JwtKey *string `yaml:"jwt_key,omitempty" json:"jwt_key,omitempty"`
}
func (ff *Funcfile) FullName() string {
fname := ff.Name
if ff.Version != "" {
fname = fmt.Sprintf("%s:%s", fname, ff.Version)
}
return fname
}
func (ff *Funcfile) RuntimeTag() (runtime, tag string) {
if ff.Runtime == nil {
return "", ""
}
rt := *ff.Runtime
tagpos := strings.Index(rt, ":")
if tagpos == -1 {
return rt, ""
}
return rt[:tagpos], rt[tagpos+1:]
}
func cleanImageName(name string) string {
if i := strings.Index(name, ":"); i != -1 {
name = name[:i]
}
return name
}
func (ff *Funcfile) Bumpversion() error {
ff.Name = cleanImageName(ff.Name)
if ff.Version == "" {
ff.Version = INITIAL_VERSION
return nil
}
s, err := storage.NewVersionStorage("local", ff.Version)
if err != nil {
return err
}
version := bumper.NewSemverBumper(s, "")
newver, err := version.BumpPatchVersion("", "")
if err != nil {
return err
}
ff.Version = newver.String()
return nil
}
func FindFuncfile(path string) (string, error) {
for _, fn := range Validfn {
fullfn := filepath.Join(path, fn)
if Exists(fullfn) {
return fullfn, nil
}
}
return "", newNotFoundError("could not find function file")
}
func LoadFuncfile() (*Funcfile, error) {
fn, err := FindFuncfile(".")
if err != nil {
return nil, err
}
return ParseFuncfile(fn)
}
func ParseFuncfile(path string) (*Funcfile, error) {
ext := filepath.Ext(path)
switch ext {
case ".json":
return decodeFuncfileJSON(path)
case ".yaml", ".yml":
return decodeFuncfileYAML(path)
}
return nil, errUnexpectedFileFormat
}
func StoreFuncfile(path string, ff *Funcfile) error {
ext := filepath.Ext(path)
switch ext {
case ".json":
return encodeFuncfileJSON(path, ff)
case ".yaml", ".yml":
return EncodeFuncfileYAML(path, ff)
}
return errUnexpectedFileFormat
}
func decodeFuncfileJSON(path string) (*Funcfile, error) {
f, err := os.Open(path)
if err != nil {
return nil, fmt.Errorf("could not open %s for parsing. Error: %v", path, err)
}
ff := new(Funcfile)
err = json.NewDecoder(f).Decode(ff)
return ff, err
}
func decodeFuncfileYAML(path string) (*Funcfile, error) {
b, err := ioutil.ReadFile(path)
if err != nil {
return nil, fmt.Errorf("could not open %s for parsing. Error: %v", path, err)
}
ff := new(Funcfile)
err = yaml.Unmarshal(b, ff)
return ff, err
}
func encodeFuncfileJSON(path string, ff *Funcfile) error {
f, err := os.Open(path)
if err != nil {
return fmt.Errorf("could not open %s for encoding. Error: %v", path, err)
}
return json.NewEncoder(f).Encode(ff)
}
func EncodeFuncfileYAML(path string, ff *Funcfile) error {
b, err := yaml.Marshal(ff)
if err != nil {
return fmt.Errorf("could not encode function file. Error: %v", err)
}
return ioutil.WriteFile(path, b, os.FileMode(0644))
}