| 1 | package hostbox |
| 2 | |
| 3 | import ( |
| 4 | "bytes" |
| 5 | "context" |
| 6 | "database/sql" |
| 7 | "encoding/json" |
| 8 | "io" |
| 9 | "net/url" |
| 10 | "os" |
| 11 | "path/filepath" |
| 12 | ) |
| 13 | |
| 14 | // GenerationLaunches includes hosts absent from the reservation directory. |
| 15 | // Only the checked local journal is eligible; an agent list is not a census. |
| 16 | func (j *LaunchJournal) GenerationLaunches(ctx context.Context) ([]LaunchInventory, error) { |
| 17 | if j == nil || j.db == nil || j.remote != nil { |
| 18 | return nil, ErrUnsupported |
| 19 | } |
| 20 | if err := journalIdentity(j.path, j.identity); err != nil { |
| 21 | return nil, err |
| 22 | } |
| 23 | rows, err := journalExecutorFor(ctx, j.db).QueryContext(ctx, "SELECT identity, body FROM launches ORDER BY identity") |
| 24 | if err != nil { |
| 25 | return nil, err |
| 26 | } |
| 27 | defer rows.Close() |
| 28 | var out []LaunchInventory |
| 29 | for rows.Next() { |
| 30 | var key string |
| 31 | var body []byte |
| 32 | if err := rows.Scan(&key, &body); err != nil { |
| 33 | return nil, err |
| 34 | } |
| 35 | if len(body) > 1<<20 || len(out) >= 8192 { |
| 36 | return nil, ErrTypedInventory |
| 37 | } |
| 38 | var in LaunchInventory |
| 39 | dec := json.NewDecoder(bytes.NewReader(body)) |
| 40 | dec.DisallowUnknownFields() |
| 41 | if dec.Decode(&in) != nil || dec.Decode(new(any)) != io.EOF || !validLaunchOwner(in.Target) || launchKey(in.Target) != key || !in.Completed.Valid() || in.ControllerPID <= 0 || in.ProcessStart == "" { |
| 42 | return nil, ErrTypedInventory |
| 43 | } |
| 44 | out = append(out, in) |
| 45 | } |
| 46 | if err := rows.Err(); err != nil { |
| 47 | return nil, err |
| 48 | } |
| 49 | if err := journalIdentity(j.path, j.identity); err != nil { |
| 50 | return nil, err |
| 51 | } |
| 52 | return out, nil |
| 53 | } |
| 54 | |
| 55 | // OpenGenerationLaunchReader never creates a database or initializes its schema. |
| 56 | // Production callers must check root ownership of the database and sidecars. |
| 57 | func OpenGenerationLaunchReader(path string) (*LaunchJournal, error) { |
| 58 | if !filepath.IsAbs(path) { |
| 59 | return nil, ErrUnsupported |
| 60 | } |
| 61 | if err := checkJournalPath(path); err != nil { |
| 62 | return nil, err |
| 63 | } |
| 64 | identity, err := os.Lstat(path) |
| 65 | if err != nil { |
| 66 | return nil, err |
| 67 | } |
| 68 | db, err := sql.Open("sqlite", "file:"+url.PathEscape(path)+"?mode=ro&_pragma=busy_timeout(5000)") |
| 69 | if err != nil { |
| 70 | return nil, err |
| 71 | } |
| 72 | db.SetMaxOpenConns(1) |
| 73 | return &LaunchJournal{db: db, path: path, identity: identity}, nil |
| 74 | } |
| 75 | |
amadan