go/task
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Code Issues Releases Activity

Merge branch 'variables'

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This commit is contained in:
Andrey Nering 2017-04-30 19:42:27 -03:00
commit bb84b067c5
2 changed files with 56 additions and 41 deletions
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64
task.go
View File

@ -95,9 +95,15 @@ func RunTask(ctx context.Context, name string) error {
return err
}
if !Force && t.isUpToDate() {
log.Printf(`task: Task "%s" is up to date`, name)
return nil
if !Force {
upToDate, err := t.isUpToDate()
if err != nil {
return err
}
if upToDate {
log.Printf(`task: Task "%s" is up to date`, name)
return nil
}
}
for i := range t.Cmds {
@ -109,18 +115,13 @@ func RunTask(ctx context.Context, name string) error {
}
func (t *Task) runDeps(ctx context.Context) error {
vars, err := t.handleVariables()
if err != nil {
return err
}
g, ctx := errgroup.WithContext(ctx)
for _, d := range t.Deps {
dep := d
g.Go(func() error {
dep, err := ReplaceVariables(dep, vars)
dep, err := t.ReplaceVariables(dep)
if err != nil {
return err
}
@ -132,36 +133,41 @@ func (t *Task) runDeps(ctx context.Context) error {
})
}
if err = g.Wait(); err != nil {
if err := g.Wait(); err != nil {
return err
}
return nil
}
func (t *Task) isUpToDate() bool {
func (t *Task) isUpToDate() (bool, error) {
if len(t.Sources) == 0 || len(t.Generates) == 0 {
return false
return false, nil
}
sourcesMaxTime, err := getPatternsMaxTime(t.Sources)
sources, err := t.ReplaceSliceVariables(t.Sources)
if err != nil {
return false, err
}
generates, err := t.ReplaceSliceVariables(t.Generates)
if err != nil {
return false, err
}
sourcesMaxTime, err := getPatternsMaxTime(sources)
if err != nil || sourcesMaxTime.IsZero() {
return false
return false, nil
}
generatesMinTime, err := getPatternsMinTime(t.Generates)
generatesMinTime, err := getPatternsMinTime(generates)
if err != nil || generatesMinTime.IsZero() {
return false
return false, nil
}
return generatesMinTime.After(sourcesMaxTime)
return generatesMinTime.After(sourcesMaxTime), nil
}
func (t *Task) runCommand(ctx context.Context, i int) error {
vars, err := t.handleVariables()
if err != nil {
return err
}
c, err := ReplaceVariables(t.Cmds[i], vars)
c, err := t.ReplaceVariables(t.Cmds[i])
if err != nil {
return err
}
@ -174,12 +180,12 @@ func (t *Task) runCommand(ctx context.Context, i int) error {
return nil
}
dir, err := ReplaceVariables(t.Dir, vars)
dir, err := t.ReplaceVariables(t.Dir)
if err != nil {
return err
}
envs, err := t.getEnviron(vars)
envs, err := t.getEnviron()
if err != nil {
return err
}
@ -209,7 +215,7 @@ func (t *Task) runCommand(ctx context.Context, i int) error {
return nil
}
func (t *Task) getEnviron(vars map[string]string) ([]string, error) {
func (t *Task) getEnviron() ([]string, error) {
if t.Env == nil {
return nil, nil
}
@ -217,15 +223,11 @@ func (t *Task) getEnviron(vars map[string]string) ([]string, error) {
envs := os.Environ()
for k, v := range t.Env {
replacedValue, err := ReplaceVariables(v, vars)
env, err := t.ReplaceVariables(fmt.Sprintf("%s=%s", k, v))
if err != nil {
return nil, err
}
replacedKey, err := ReplaceVariables(k, vars)
if err != nil {
return nil, err
}
envs = append(envs, fmt.Sprintf("%s=%s", replacedKey, replacedValue))
envs = append(envs, env)
}
return envs, nil
}

33
variable_handling.go
View File

@ -25,15 +25,10 @@ var (
ErrMultilineResultCmd = errors.New("Got multiline result from command")
)
var varCmds = make(map[string]string)
func handleDynamicVariableContent(value string) (string, error) {
if !strings.HasPrefix(value, "$") {
return value, nil
}
if result, ok := varCmds[value]; ok {
return result, nil
}
buff := bytes.NewBuffer(nil)
@ -53,11 +48,10 @@ func handleDynamicVariableContent(value string) (string, error) {
}
result = strings.TrimSpace(result)
varCmds[value] = result
return result, nil
}
func (t *Task) handleVariables() (map[string]string, error) {
func (t *Task) getVariables() (map[string]string, error) {
localVariables := make(map[string]string)
for key, value := range t.Vars {
val, err := handleDynamicVariableContent(value)
@ -105,14 +99,33 @@ func init() {
}
}
// ReplaceSliceVariables writes vars into initial string slice
func (t *Task) ReplaceSliceVariables(initials []string) ([]string, error) {
result := make([]string, len(initials))
for i, s := range initials {
var err error
result[i], err = t.ReplaceVariables(s)
if err != nil {
return nil, err
}
}
return result, nil
}
// ReplaceVariables writes vars into initial string
func ReplaceVariables(initial string, vars map[string]string) (string, error) {
t, err := template.New("").Funcs(templateFuncs).Parse(initial)
func (t *Task) ReplaceVariables(initial string) (string, error) {
vars, err := t.getVariables()
if err != nil {
return "", err
}
templ, err := template.New("").Funcs(templateFuncs).Parse(initial)
if err != nil {
return "", err
}
b := bytes.NewBuffer(nil)
if err = t.Execute(b, vars); err != nil {
if err = templ.Execute(b, vars); err != nil {
return "", err
}
return b.String(), nil