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Merge pull request #206 from agaridata/cache_from

Cache from PR Cleanup
This commit is contained in:
Thomas Boerger 2018-11-10 13:28:23 +01:00 committed by GitHub
commit fe1aa8ab24
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2 changed files with 27 additions and 1 deletions

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@ -151,6 +151,11 @@ func main() {
Usage: "build target",
EnvVar: "PLUGIN_TARGET",
},
cli.StringSliceFlag{
Name: "cache-from",
Usage: "images to consider as cache sources",
EnvVar: "PLUGIN_CACHE_FROM",
},
cli.BoolFlag{
Name: "squash",
Usage: "squash the layers at build time",
@ -245,6 +250,7 @@ func run(c *cli.Context) error {
Target: c.String("target"),
Squash: c.Bool("squash"),
Pull: c.BoolT("pull-image"),
CacheFrom: c.StringSlice("cache-from"),
Compress: c.Bool("compress"),
Repo: c.String("repo"),
Labels: c.StringSlice("custom-labels"),

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@ -47,6 +47,7 @@ type (
Target string // Docker build target
Squash bool // Docker build squash
Pull bool // Docker build pull
CacheFrom []string // Docker build cache-from
Compress bool // Docker build compress
Repo string // Docker build repository
LabelSchema []string // label-schema Label map
@ -116,6 +117,11 @@ func (p Plugin) Exec() error {
cmds = append(cmds, commandVersion()) // docker version
cmds = append(cmds, commandInfo()) // docker info
// pre-pull cache images
for _, img := range p.Build.CacheFrom {
cmds = append(cmds, commandPull(img))
}
cmds = append(cmds, commandBuild(p.Build)) // docker build
for _, tag := range p.Build.Tags {
@ -138,7 +144,9 @@ func (p Plugin) Exec() error {
trace(cmd)
err := cmd.Run()
if err != nil {
if err != nil && isCommandPull(cmd.Args) {
fmt.Printf("Could not pull cache-from image %s. Ignoring...\n", cmd.Args[2])
} else if err != nil {
return err
}
}
@ -162,6 +170,15 @@ func commandLogin(login Login) *exec.Cmd {
)
}
// helper to check if args match "docker pull <image>"
func isCommandPull(args []string) bool {
return len(args) > 2 && args[1] == "pull"
}
func commandPull(repo string) *exec.Cmd {
return exec.Command(dockerExe, "pull", repo)
}
func commandLoginEmail(login Login) *exec.Cmd {
return exec.Command(
dockerExe, "login",
@ -204,6 +221,9 @@ func commandBuild(build Build) *exec.Cmd {
if build.NoCache {
args = append(args, "--no-cache")
}
for _, arg := range build.CacheFrom {
args = append(args, "--cache-from", arg)
}
for _, arg := range build.ArgsEnv {
addProxyValue(&build, arg)
}