// retrieveResultsAndRemoveContainer copies the test.results file out of the Docker container and into
// the expected location. It then removes the container.
func retrieveResultsAndRemoveContainer(target *core.BuildTarget, containerFile string, warn bool) {
cid, err := ioutil.ReadFile(containerFile)
if err != nil {
log.Warning("Failed to read Docker container file %s", containerFile)
return
}
if !target.NoTestOutput {
retrieveFile(target, cid, "test.results", warn)
}
if core.State.NeedCoverage {
retrieveFile(target, cid, "test.coverage", false)
}
for _, output := range target.TestOutputs {
retrieveFile(target, cid, output, false)
}
// Give this some time to complete. Processes inside the container might not be ready
// to shut down immediately.
timeout := core.State.Config.Docker.RemoveTimeout
for i := 0; i < 5; i++ {
cmd := []string{"docker", "rm", "-f", string(cid)}
if _, err := core.ExecWithTimeoutSimple(timeout, cmd...); err == nil {
return
}
time.Sleep(100 * time.Millisecond)
}
}
// retrieveFile retrieves a single file (or directory) from a Docker container.
func retrieveFile(target *core.BuildTarget, cid []byte, filename string, warn bool) {
log.Debug("Attempting to retrieve file %s for %s...", filename, target.Label)
timeout := core.State.Config.Docker.ResultsTimeout
cmd := []string{"docker", "cp", string(cid) + ":/tmp/test/" + filename, target.TestDir()}
if out, err := core.ExecWithTimeoutSimple(timeout, cmd...); err != nil {
if warn {
log.Warning("Failed to retrieve results for %s: %s [%s]", target.Label, err, out)
} else {
log.Debug("Failed to retrieve results for %s: %s [%s]", target.Label, err, out)
}
}
}