alex/goldsmith
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Better error handling

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This commit is contained in:
Alex Yatskov 2015-11-01 13:11:45 +09:00
parent 1ebb78f550
commit 679f2344cb
2 changed files with 44 additions and 44 deletions
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77
goldsmith.go
View File

@ -75,22 +75,14 @@ func (gs *goldsmith) makeStage() stage {
return s
}
func (gs *goldsmith) NewFile(relPath string) File {
return &file{relPath: relPath}
}
func (gs *goldsmith) SetError(err error) {
gs.err = err
}
func (gs *goldsmith) taskSingle(ts TaskerSingle) {
func (gs *goldsmith) chainSingle(ts ChainerSingle) {
s := gs.makeStage()
var wg sync.WaitGroup
for file := range s.input {
wg.Add(1)
go func(f File) {
s.output <- ts.TaskSingle(gs, f)
s.output <- ts.ChainSingle(gs, f)
wg.Done()
}(file)
}
@ -101,18 +93,26 @@ func (gs *goldsmith) taskSingle(ts TaskerSingle) {
}()
}
func (gs *goldsmith) taskMultiple(tm TaskerMultiple) {
func (gs *goldsmith) chainMultiple(tm ChainerMultiple) {
s := gs.makeStage()
tm.TaskMultiple(gs, s.input, s.output)
tm.ChainMultiple(gs, s.input, s.output)
}
func (gs *goldsmith) Task(task interface{}) Goldsmith {
if gs.err == nil {
switch t := task.(type) {
case TaskerSingle:
gs.taskSingle(t)
case TaskerMultiple:
gs.taskMultiple(t)
func (gs *goldsmith) NewFile(relPath string) File {
return &file{relPath: relPath}
}
func (gs *goldsmith) Chain(chain interface{}, err error) Goldsmith {
if gs.err != nil {
return gs
}
if gs.err = err; gs.err != nil {
switch t := chain.(type) {
case ChainerSingle:
gs.chainSingle(t)
case ChainerMultiple:
gs.chainMultiple(t)
}
}
@ -124,28 +124,29 @@ func (gs *goldsmith) Complete(dstDir string) ([]File, error) {
var files []File
for file := range s.output {
data := file.Data()
if data == nil {
continue
}
if file.Error() == nil {
data := file.Data()
if data == nil {
continue
}
absPath := filepath.Join(dstDir, file.Path())
absPath := filepath.Join(dstDir, file.Path())
if err := os.MkdirAll(path.Dir(absPath), 0755); err != nil {
file.SetError(err)
continue
}
if err := os.MkdirAll(path.Dir(absPath), 0755); err != nil {
file.SetError(err)
continue
}
f, err := os.Create(absPath)
if err != nil {
file.SetError(err)
continue
}
defer f.Close()
f, err := os.Create(absPath)
if err != nil {
file.SetError(err)
continue
}
defer f.Close()
if _, err := f.Write(data); err != nil {
file.SetError(err)
continue
if _, err := f.Write(data); err != nil {
file.SetError(err)
continue
}
}
files = append(files, file)

11
types.go
View File

@ -23,21 +23,20 @@
package goldsmith
type Goldsmith interface {
Task(task interface{}) Goldsmith
Chain(task interface{}, err error) Goldsmith
Complete(dstDir string) ([]File, error)
}
type TaskerSingle interface {
TaskSingle(ctx Context, file File) File
type ChainerSingle interface {
ChainSingle(ctx Context, file File) File
}
type TaskerMultiple interface {
TaskMultiple(ctx Context, input, output chan File)
type ChainerMultiple interface {
ChainMultiple(ctx Context, input, output chan File)
}
type Context interface {
NewFile(srcDir string) File
SetError(err error)
}
type File interface {