mirror of
https://github.com/criyle/go-judge.git
synced 2025-11-04 14:50:02 +08:00
80 lines
1.5 KiB
Go
80 lines
1.5 KiB
Go
package envexec
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import (
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"fmt"
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"io/ioutil"
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"os"
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"github.com/criyle/go-judge/file"
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"github.com/criyle/go-sandbox/runner"
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"golang.org/x/sync/errgroup"
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)
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// copyOutAndCollect reads file and pipes in parallel from container
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func copyOutAndCollect(m Environment, c *Cmd, ptc []pipeCollector) (map[string]file.File, error) {
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var g errgroup.Group
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fc := make(chan file.File, len(ptc)+len(c.CopyOut))
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// copy out
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for _, n := range c.CopyOut {
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n := n
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g.Go(func() error {
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cf, err := m.Open(n, os.O_RDONLY, 0777)
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if err != nil {
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return err
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}
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defer cf.Close()
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// check size limit
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if c.CopyOutMax != 0 {
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stat, err := cf.Stat()
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if err != nil {
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return err
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}
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if s := stat.Size(); s > int64(c.CopyOutMax) {
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return fmt.Errorf("File %s have size %d exceeded the limit %d", n, s, c.CopyOutMax)
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}
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}
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c, err := ioutil.ReadAll(cf)
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if err != nil {
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return err
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}
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fc <- file.NewMemFile(n, c)
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return nil
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})
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}
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// collect pipe
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for _, p := range ptc {
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p := p
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g.Go(func() error {
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<-p.buff.Done
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if int64(p.buff.Buffer.Len()) > p.buff.Max {
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return runner.StatusOutputLimitExceeded
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}
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fc <- file.NewMemFile(p.name, p.buff.Buffer.Bytes())
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return nil
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})
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}
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// copy out dir
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if c.CopyOutDir != "" {
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g.Go(func() error {
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return copyDir(m.WorkDir(), c.CopyOutDir)
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})
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}
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var err error
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go func() {
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err = g.Wait()
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close(fc)
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}()
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rt := make(map[string]file.File)
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for f := range fc {
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rt[f.Name()] = f
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}
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return rt, err
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}
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