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Add cacheBusted flag which gets set on the first cache miss

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Refactor of probeCache function

Signed-off-by: AnandkumarPatel <anandkumarpatel@gmail.com>
This commit is contained in:
AnandkumarPatel
2015-02-25 10:27:32 -08:00
parent 1e746a8a2b
commit 2420c1f03b
2 changed files with 18 additions and 14 deletions
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1
builder/evaluator.go
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@@ -90,6 +90,7 @@ type Builder struct {
Verbose bool
UtilizeCache bool
cacheBusted bool
// controls how images and containers are handled between steps.
Remove bool

31
builder/internals.go
View File

@@ -502,21 +502,24 @@ func (b *Builder) processImageFrom(img *imagepkg.Image) error {
// `(true, nil)`. If no image is found, it returns `(false, nil)`. If there
// is any error, it returns `(false, err)`.
func (b *Builder) probeCache() (bool, error) {
if b.UtilizeCache {
if cache, err := b.Daemon.ImageGetCached(b.image, b.Config); err != nil {
return false, err
} else if cache != nil {
fmt.Fprintf(b.OutStream, " ---> Using cache\n")
log.Debugf("[BUILDER] Use cached version")
b.image = cache.ID
return true, nil
} else {
log.Debugf("[BUILDER] Cache miss")
// after a miss we no longer need to probe
b.UtilizeCache = false
}
if !b.UtilizeCache || b.cacheBusted {
return false, nil
}
return false, nil
cache, err := b.Daemon.ImageGetCached(b.image, b.Config)
if err != nil {
return false, err
}
if cache == nil {
log.Debugf("[BUILDER] Cache miss")
b.cacheBusted = true
return false, nil
}
fmt.Fprintf(b.OutStream, " ---> Using cache\n")
log.Debugf("[BUILDER] Use cached version")
b.image = cache.ID
return true, nil
}
func (b *Builder) create() (*daemon.Container, error) {