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| 1 | package activator |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "errors" |
| 6 | "time" |
| 7 | |
| 8 | "github.com/carlosframework/platform/internal/hostwrite" |
| 9 | ) |
| 10 | |
| 11 | type probeWindow struct { |
| 12 | policy startPolicy |
| 13 | opened time.Time |
| 14 | ready bool |
| 15 | now func() time.Time |
| 16 | } |
| 17 | |
| 18 | func (b *probeWindow) result(err error) error { |
| 19 | if !b.policy.Probe || b.ready { |
| 20 | return err |
| 21 | } |
| 22 | now := b.now() |
| 23 | if (!b.policy.Deadline.IsZero() && !now.Before(b.policy.Deadline)) || |
| 24 | (!b.opened.IsZero() && !now.Before(b.opened.Add(b.policy.Window))) { |
| 25 | return errors.Join(ErrAttemptOver, err) |
| 26 | } |
| 27 | return err |
| 28 | } |
| 29 | |
| 30 | func (b *probeWindow) start(ctx context.Context, journal func(context.Context, time.Time) (time.Time, error)) error { |
| 31 | if !b.policy.Probe { |
| 32 | return ctx.Err() |
| 33 | } |
| 34 | if err := b.result(ctx.Err()); err != nil { |
| 35 | return err |
| 36 | } |
| 37 | if journal == nil { |
| 38 | return hostwrite.ErrUnavailable |
| 39 | } |
| 40 | proposed := b.now() |
| 41 | opened, err := journal(ctx, proposed) |
| 42 | if err != nil { |
| 43 | return err |
| 44 | } |
| 45 | if opened.IsZero() || opened.After(proposed) || (!b.opened.IsZero() && !b.opened.Equal(opened)) { |
| 46 | return hostwrite.ErrUnavailable |
| 47 | } |
| 48 | b.opened = opened |
| 49 | return b.result(ctx.Err()) |
| 50 | } |
| 51 | |
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