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build_context.go
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/
build_context.go
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package build_context
import (
"context"
"fmt"
"io"
"io/ioutil"
"os"
"github.com/werf/werf/pkg/util"
)
type BuildContext struct {
ContextTarReader io.ReadCloser
TmpDir string
contextTmpDir string
}
func NewBuildContext(tmpDir string, contextTarReader io.ReadCloser) *BuildContext {
return &BuildContext{TmpDir: tmpDir, ContextTarReader: contextTarReader}
}
func (c *BuildContext) GetContextDir(ctx context.Context) (string, error) {
if c.contextTmpDir != "" {
return c.contextTmpDir, nil
}
contextTmpDir, err := ioutil.TempDir(c.TmpDir, "context")
if err != nil {
return "", fmt.Errorf("unable to create context tmp dir: %w", err)
}
if err := util.ExtractTar(c.ContextTarReader, contextTmpDir, util.ExtractTarOptions{}); err != nil {
return "", fmt.Errorf("unable to extract context tar to tmp context dir: %w", err)
}
if err := c.ContextTarReader.Close(); err != nil {
return "", fmt.Errorf("error closing context tar: %w", err)
}
c.contextTmpDir = contextTmpDir
return c.contextTmpDir, nil
}
func (c *BuildContext) Terminate() error {
if c.contextTmpDir == "" {
return nil
}
if err := os.RemoveAll(c.contextTmpDir); err != nil {
return fmt.Errorf("unable to remove dir %q: %w", c.contextTmpDir, err)
}
return nil
}