managed_count.go RawHistoryFolder

1package apps
2
3import (
4	"context"
5	"fmt"
6
7	"github.com/bnema/gordon/internal/boundaries/out"
8)
9
10// CountManagedContainers returns the number of containers Gordon currently
11// manages: ACTIVE app services bound to a container, excluding apps whose
12// durable intent is stopped. It reads persisted state only, so the result is
13// correct after boot and after every lifecycle operation, including failures.
14func CountManagedContainers(ctx context.Context, state out.AppStateReader) (int64, error) {
15	names, err := state.ListApps(ctx)
16	if err != nil {
17		return 0, fmt.Errorf("failed to list apps: %w", err)
18	}
19	var total int64
20	for _, name := range names {
21		intent, err := state.LoadIntent(ctx, name)
22		if err != nil {
23			return 0, fmt.Errorf("failed to load intent for app %q: %w", name, err)
24		}
25		if intent.Stopped {
26			continue
27		}
28		active, ok, err := state.LoadActive(ctx, name)
29		if err != nil {
30			return 0, fmt.Errorf("failed to load active state for app %q: %w", name, err)
31		}
32		if !ok {
33			continue
34		}
35		for _, svc := range active.Services {
36			if svc.Container != "" {
37				total++
38			}
39		}
40	}
41	return total, nil
42}