| // Copyright 2023 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| package metricscmd |
| |
| import ( |
| "context" |
| "encoding/json" |
| "fmt" |
| "io" |
| "os" |
| |
| "infra/build/siso/build" |
| ) |
| |
| func loadMetrics(ctx context.Context, fname string) ([]build.StepMetric, error) { |
| f, err := os.Open(fname) |
| if err != nil { |
| return nil, err |
| } |
| defer f.Close() |
| d := json.NewDecoder(f) |
| var metrics []build.StepMetric |
| for { |
| var m build.StepMetric |
| err := d.Decode(&m) |
| if err == io.EOF { |
| break |
| } |
| if err != nil { |
| return nil, fmt.Errorf("parse error in %s:%d: %w", fname, d.InputOffset(), err) |
| } |
| metrics = append(metrics, m) |
| } |
| return metrics, nil |
| } |
