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WIP: Embed podman (remote) binary in crc binary
Fixes crc-org#961.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,5 +1,6 @@ | ||
| package constants | ||
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| const ( | ||
| OcBinaryName = "oc" | ||
| OcBinaryName = "oc" | ||
| PodmanBinaryName = "podman" | ||
| ) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,5 +1,6 @@ | ||
| package constants | ||
|
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| const ( | ||
| OcBinaryName = "oc.exe" | ||
| OcBinaryName = "oc.exe" | ||
| PodmanBinaryName = "podman.exe" | ||
| ) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,118 @@ | ||
| package podman | ||
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| import ( | ||
| "fmt" | ||
| "io/ioutil" | ||
| "os" | ||
| "path/filepath" | ||
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| "github.com/code-ready/crc/pkg/crc/constants" | ||
| "github.com/code-ready/crc/pkg/crc/logging" | ||
| "github.com/code-ready/crc/pkg/download" | ||
| "github.com/code-ready/crc/pkg/embed" | ||
| "github.com/code-ready/crc/pkg/extract" | ||
| crcos "github.com/code-ready/crc/pkg/os" | ||
| "github.com/pkg/errors" | ||
| ) | ||
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| // Podman is a struct with methods designed for dealing with the podman binary | ||
| type PodmanCached struct{} | ||
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| func (podman *PodmanCached) EnsureIsCached() error { | ||
| if !podman.IsCached() { | ||
| err := podman.cachePodman() | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| } | ||
| return nil | ||
| } | ||
|
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| func (podman *PodmanCached) IsCached() bool { | ||
| if _, err := os.Stat(filepath.Join(constants.CrcBinDir, constants.PodmanBinaryName)); os.IsNotExist(err) { | ||
| return false | ||
| } | ||
| return true | ||
| } | ||
|
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| func (podman *PodmanCached) getPodman(destDir string) (string, error) { | ||
| logging.Debug("Trying to extract podman from crc binary") | ||
| archiveName := filepath.Base(constants.GetPodmanUrl()) | ||
| destPath := filepath.Join(destDir, archiveName) | ||
| err := embed.Extract(archiveName, destPath) | ||
| if err != nil { | ||
| logging.Debug("Downloading podman") | ||
| return download.Download(constants.GetPodmanUrl(), destDir, 0600) | ||
| } | ||
|
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| return destPath, err | ||
| } | ||
|
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| // cachePodman downloads and caches the podman binary into the minishift directory | ||
| func (podman *PodmanCached) cachePodman() error { | ||
| if podman.IsCached() { | ||
| return nil | ||
| } | ||
|
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| // Create tmp dir to download the podman tarball | ||
| tmpDir, err := ioutil.TempDir("", "crc") | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer os.RemoveAll(tmpDir) | ||
| assetTmpFile, err := podman.getPodman(tmpDir) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| // Extract the tarball and put it the cache directory. | ||
| err = extract.Uncompress(assetTmpFile, tmpDir) | ||
| if err != nil { | ||
| return errors.Wrapf(err, "Cannot uncompress '%s'", assetTmpFile) | ||
| } | ||
|
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| binaryName := constants.PodmanBinaryName | ||
| binaryPath, err := findBinary(tmpDir, binaryName) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| // Copy the requested asset into its final destination | ||
| outputPath := constants.CrcBinDir | ||
| err = os.MkdirAll(outputPath, 0750) | ||
| if err != nil && !os.IsExist(err) { | ||
| return errors.Wrap(err, "Cannot create the target directory.") | ||
| } | ||
|
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| finalBinaryPath := filepath.Join(outputPath, binaryName) | ||
| err = crcos.CopyFileContents(binaryPath, finalBinaryPath, 0500) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| return nil | ||
| } | ||
|
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| func findBinary(dirPath string, binaryName string) (string, error) { | ||
| var binaryPath string = "" | ||
|
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| err := filepath.Walk(dirPath, func(path string, info os.FileInfo, err error) error { | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| if filepath.Base(path) == binaryName { | ||
| binaryPath = path | ||
|
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| return filepath.SkipDir | ||
| } | ||
|
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| return nil | ||
| }) | ||
| if binaryPath == "" && err == nil { | ||
| err = fmt.Errorf("Failed to find `{}` binary in `{}`.", binaryName, dirPath) | ||
| } | ||
|
|
||
| return binaryPath, err | ||
| } |
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