get returns a cached projectContext for the given ID, creating one on first access.
(id string)
| 51 | |
| 52 | // get returns a cached projectContext for the given ID, creating one on first access. |
| 53 | func (pr *ProjectResolver) get(id string) (*projectContext, error) { |
| 54 | pr.mu.RLock() |
| 55 | if ctx, ok := pr.cache[id]; ok { |
| 56 | pr.mu.RUnlock() |
| 57 | return ctx, nil |
| 58 | } |
| 59 | pr.mu.RUnlock() |
| 60 | |
| 61 | pr.mu.Lock() |
| 62 | defer pr.mu.Unlock() |
| 63 | |
| 64 | // Double-check after acquiring write lock. |
| 65 | if ctx, ok := pr.cache[id]; ok { |
| 66 | return ctx, nil |
| 67 | } |
| 68 | |
| 69 | scanDir, phases, err := pr.resolve(id) |
| 70 | if err != nil { |
| 71 | return nil, err |
| 72 | } |
| 73 | |
| 74 | ctx := &projectContext{ |
| 75 | dp: NewDataProvider(scanDir, pr.verbose), |
| 76 | phases: phases, |
| 77 | } |
| 78 | pr.cache[id] = ctx |
| 79 | return ctx, nil |
| 80 | } |
| 81 | |
| 82 | // projectMiddleware resolves ?project=<id> and injects the DataProvider into request context. |
| 83 | func projectMiddleware(resolver *ProjectResolver, next http.Handler) http.Handler { |