50 lines
888 B
Go
50 lines
888 B
Go
package worker
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import (
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"bufio"
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"bytes"
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"fmt"
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"os/exec"
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)
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type RunOps struct {
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Log Logger
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Path string
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FuncConfig *FuncConfig
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Env []string
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}
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func RunFunction(opt *RunOps, input []byte) ([]byte, error) {
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if opt.FuncConfig.Runtime != "exec" {
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return nil, fmt.Errorf("unsupported runtime: %s", opt.FuncConfig.Runtime)
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}
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cmd := exec.Command(opt.Path)
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cmd.Env = opt.Env
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cmd.Stdin = bytes.NewReader(input)
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var out bytes.Buffer
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cmd.Stdout = &out
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stderrPipe, err := cmd.StderrPipe()
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if err != nil {
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return nil, err
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}
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go func() {
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scanner := bufio.NewScanner(stderrPipe)
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for scanner.Scan() {
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line := scanner.Text()
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opt.Log.Write(line)
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}
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}()
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if err := cmd.Start(); err != nil {
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return nil, err
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}
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if err := cmd.Wait(); err != nil {
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return nil, fmt.Errorf("failed: %w\noutput: %s", err, out.String())
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}
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return out.Bytes(), nil
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}
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