func mergeUploadCSVFiles(runID string, gs *util.GsUtil) error {
localOutputDir := filepath.Join(util.StorageDir, util.BenchmarkRunsDir, runID)
skutil.MkdirAll(localOutputDir, 0700)
// Copy outputs from all slaves locally.
for i := 0; i < util.NUM_WORKERS; i++ {
workerNum := i + 1
workerLocalOutputPath := filepath.Join(localOutputDir, fmt.Sprintf("slave%d", workerNum)+".csv")
workerRemoteOutputPath := filepath.Join(util.BenchmarkRunsDir, runID, fmt.Sprintf("slave%d", workerNum), "outputs", runID+".output")
respBody, err := gs.GetRemoteFileContents(workerRemoteOutputPath)
if err != nil {
glog.Errorf("Could not fetch %s: %s", workerRemoteOutputPath, err)
// TODO(rmistry): Should we instead return here? We can only return
// here if all 100 slaves reliably run without any failures which they
// really should.
continue
}
defer skutil.Close(respBody)
out, err := os.Create(workerLocalOutputPath)
if err != nil {
return fmt.Errorf("Unable to create file %s: %s", workerLocalOutputPath, err)
}
defer skutil.Close(out)
defer skutil.Remove(workerLocalOutputPath)
if _, err = io.Copy(out, respBody); err != nil {
return fmt.Errorf("Unable to copy to file %s: %s", workerLocalOutputPath, err)
}
}
// Call csv_merger.py to merge all results into a single results CSV.
_, currentFile, _, _ := runtime.Caller(0)
pathToPyFiles := filepath.Join(
filepath.Dir((filepath.Dir(filepath.Dir(filepath.Dir(currentFile))))),
"py")
pathToCsvMerger := filepath.Join(pathToPyFiles, "csv_merger.py")
outputFileName := runID + ".output"
args := []string{
pathToCsvMerger,
"--csv_dir=" + localOutputDir,
"--output_csv_name=" + filepath.Join(localOutputDir, outputFileName),
}
if err := util.ExecuteCmd("python", args, []string{}, 1*time.Hour, nil, nil); err != nil {
return fmt.Errorf("Error running csv_merger.py: %s", err)
}
// Copy the output file to Google Storage.
remoteOutputDir := filepath.Join(util.BenchmarkRunsDir, runID, "consolidated_outputs")
if err := gs.UploadFile(outputFileName, localOutputDir, remoteOutputDir); err != nil {
return fmt.Errorf("Unable to upload %s to %s: %s", outputFileName, remoteOutputDir, err)
}
return nil
}
func mergeUploadCSVFiles(runID string, gs *util.GsUtil) ([]string, error) {
localOutputDir := filepath.Join(util.StorageDir, util.BenchmarkRunsDir, runID)
skutil.MkdirAll(localOutputDir, 0700)
noOutputSlaves := []string{}
// Copy outputs from all slaves locally.
for i := 0; i < util.NumWorkers(); i++ {
workerNum := i + 1
workerLocalOutputPath := filepath.Join(localOutputDir, fmt.Sprintf("slave%d", workerNum)+".csv")
workerRemoteOutputPath := filepath.Join(util.BenchmarkRunsDir, runID, fmt.Sprintf("slave%d", workerNum), "outputs", runID+".output")
respBody, err := gs.GetRemoteFileContents(workerRemoteOutputPath)
if err != nil {
glog.Errorf("Could not fetch %s: %s", workerRemoteOutputPath, err)
noOutputSlaves = append(noOutputSlaves, fmt.Sprintf(util.WORKER_NAME_TEMPLATE, workerNum))
continue
}
defer skutil.Close(respBody)
out, err := os.Create(workerLocalOutputPath)
if err != nil {
return noOutputSlaves, fmt.Errorf("Unable to create file %s: %s", workerLocalOutputPath, err)
}
defer skutil.Close(out)
defer skutil.Remove(workerLocalOutputPath)
if _, err = io.Copy(out, respBody); err != nil {
return noOutputSlaves, fmt.Errorf("Unable to copy to file %s: %s", workerLocalOutputPath, err)
}
}
// Call csv_merger.py to merge all results into a single results CSV.
_, currentFile, _, _ := runtime.Caller(0)
pathToPyFiles := filepath.Join(
filepath.Dir((filepath.Dir(filepath.Dir(filepath.Dir(currentFile))))),
"py")
pathToCsvMerger := filepath.Join(pathToPyFiles, "csv_merger.py")
outputFileName := runID + ".output"
args := []string{
pathToCsvMerger,
"--csv_dir=" + localOutputDir,
"--output_csv_name=" + filepath.Join(localOutputDir, outputFileName),
}
err := util.ExecuteCmd("python", args, []string{}, util.CSV_MERGER_TIMEOUT, nil, nil)
if err != nil {
return noOutputSlaves, fmt.Errorf("Error running csv_merger.py: %s", err)
}
// Copy the output file to Google Storage.
remoteOutputDir := filepath.Join(util.BenchmarkRunsDir, runID, "consolidated_outputs")
if err := gs.UploadFile(outputFileName, localOutputDir, remoteOutputDir); err != nil {
return noOutputSlaves, fmt.Errorf("Unable to upload %s to %s: %s", outputFileName, remoteOutputDir, err)
}
return noOutputSlaves, nil
}