| 1 | package main |
| 2 | |
| 3 | import ( |
| 4 | "encoding/json" |
| 5 | "fmt" |
| 6 | "log" |
| 7 | "path/filepath" |
| 8 | |
| 9 | "reasonix/internal/config" |
| 10 | "reasonix/internal/fileutil" |
| 11 | ) |
| 12 | |
| 13 | // The top-level runs field remains readable by the previous sidecar reader; |
| 14 | // current readers use revision/previous to make the two-file commit consistent. |
| 15 | const heartbeatRunHistorySchemaVersion = 1 |
| 16 | |
| 17 | type heartbeatRunHistoryGeneration struct { |
| 18 | Revision uint64 `json:"revision"` |
| 19 | Runs map[string][]HeartbeatRun `json:"runs"` |
| 20 | } |
| 21 | |
| 22 | type heartbeatRunHistorySidecar struct { |
| 23 | SchemaVersion int `json:"schemaVersion,omitempty"` |
| 24 | Revision uint64 `json:"revision,omitempty"` |
| 25 | Runs map[string][]HeartbeatRun `json:"runs"` |
| 26 | Previous *heartbeatRunHistoryGeneration `json:"previous,omitempty"` |
| 27 | } |
| 28 | |
| 29 | func (e *HeartbeatEngine) runHistoryPath() string { |
| 30 | dir := config.MemoryUserDir() |
| 31 | if dir == "" { |
| 32 | dir = "." |
| 33 | } |
| 34 | return filepath.Join(dir, "heartbeat-tasks.runs.json") |
| 35 | } |
| 36 | |
| 37 | // The previous generation keeps the old config readable if the process exits |
| 38 | // after publishing a new sidecar but before publishing the matching config. |
| 39 | func (e *HeartbeatEngine) readRunHistorySidecar(cfg heartbeatConfig) (map[string][]HeartbeatRun, error) { |
| 40 | b, err := readFileUTF8(e.runHistoryPath()) |
| 41 | if err != nil { |
| 42 | return nil, nil |
| 43 | } |
| 44 | var sidecar heartbeatRunHistorySidecar |
| 45 | if err := json.Unmarshal(b, &sidecar); err != nil { |
| 46 | log.Printf("[heartbeat] invalid run-history sidecar: %v", err) |
| 47 | return nil, nil |
| 48 | } |
| 49 | if sidecar.SchemaVersion > heartbeatRunHistorySchemaVersion { |
| 50 | return nil, fmt.Errorf("heartbeat run-history sidecar schemaVersion %d is newer than this binary supports (%d); upgrade Reasonix", sidecar.SchemaVersion, heartbeatRunHistorySchemaVersion) |
| 51 | } |
| 52 | if sidecar.SchemaVersion == 0 && sidecar.Revision == 0 && sidecar.Previous == nil { |
| 53 | return sidecar.Runs, nil |
| 54 | } |
| 55 | if sidecar.Revision == cfg.Revision { |
| 56 | return sidecar.Runs, nil |
| 57 | } |
| 58 | if sidecar.Previous != nil && sidecar.Previous.Revision == cfg.Revision { |
| 59 | return sidecar.Previous.Runs, nil |
| 60 | } |
| 61 | // An older writer can replace only the main config and omit Revision. |
| 62 | if cfg.Revision == 0 || cfg.Revision > sidecar.Revision { |
| 63 | return sidecar.Runs, nil |
| 64 | } |
| 65 | log.Printf("[heartbeat] run-history sidecar revision %d does not match config revision %d; ignoring staged generation", sidecar.Revision, cfg.Revision) |
| 66 | return nil, nil |
| 67 | } |
| 68 | |
| 69 | func (e *HeartbeatEngine) writeRunHistorySidecar(revision uint64, runs map[string][]HeartbeatRun, previous *heartbeatRunHistoryGeneration) error { |
| 70 | b, err := json.MarshalIndent(heartbeatRunHistorySidecar{ |
| 71 | SchemaVersion: heartbeatRunHistorySchemaVersion, |
| 72 | Revision: revision, |
| 73 | Runs: runs, |
| 74 | Previous: previous, |
| 75 | }, "", " ") |
| 76 | if err != nil { |
| 77 | return err |
| 78 | } |
| 79 | return fileutil.AtomicWriteFile(e.runHistoryPath(), b, 0o644) |
| 80 | } |
| 81 | |
| 82 | func heartbeatRunHistoryByTask(tasks []HeartbeatTask) map[string][]HeartbeatRun { |
| 83 | runs := make(map[string][]HeartbeatRun, len(tasks)) |
| 84 | for _, task := range tasks { |
| 85 | if len(task.RunHistory) > 0 { |
| 86 | runs[task.ID] = task.RunHistory |
| 87 | } |
| 88 | } |
| 89 | return runs |
| 90 | } |
| 91 |