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feat(events): add reactive event hooks for store mutations

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Watch/Unwatch API with buffered channels (cap 16) and wildcard matching,
OnChange callback hook for go-ws integration, non-blocking notify on
Set/SetWithTTL/Delete/DeleteGroup. ScopedStore events emit with full
prefixed group names. 16 new tests, race-clean, coverage 94.7% -> 95.5%.

Co-Authored-By: Virgil <virgil@lethean.io>
This commit is contained in:
Snider 2026-02-20 08:25:03 +00:00
parent 6e150f80eb
commit f202cfe218
5 changed files with 662 additions and 25 deletions
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17
CLAUDE.md
View file

@ -41,6 +41,23 @@ sc.Get("config", "key") // reads from "tenant:config"
quota := store.QuotaConfig{MaxKeys: 100, MaxGroups: 10}
sq, _ := store.NewScopedWithQuota(st, "tenant", quota)
sq.Set("g", "k", "v") // returns ErrQuotaExceeded if limits hit
// Event hooks — reactive notifications for store mutations
w := st.Watch("group", "key") // watch specific key (buffered chan, cap 16)
w2 := st.Watch("group", "*") // wildcard: all keys in group
w3 := st.Watch("*", "*") // wildcard: all mutations
defer st.Unwatch(w)
select {
case e := <-w.Ch:
fmt.Println(e.Type, e.Group, e.Key, e.Value)
}
// Callback hook (synchronous, caller controls concurrency)
unreg := st.OnChange(func(e store.Event) {
hub.SendToChannel("store-events", e) // go-ws integration point
})
defer unreg()
```
## Coding Standards

50
TODO.md
View file

@ -64,25 +64,25 @@ Reactive notification system for store mutations. Pure Go, no new deps. The go-w
### 3.1 Event Types (`events.go`)
- [ ] **Create `events.go`** — Define the event model:
- [x] **Create `events.go`** — Define the event model:
- `type EventType int` with constants: `EventSet`, `EventDelete`, `EventDeleteGroup`
- `type Event struct { Type EventType; Group string; Key string; Value string; Timestamp time.Time }` — Key is empty for `EventDeleteGroup`, Value is only populated for `EventSet`
- `func (t EventType) String() string` — returns `"set"`, `"delete"`, `"delete_group"`
### 3.2 Watcher API
- [ ] **Add watcher infrastructure to Store** — New fields on `Store`:
- [x] **Add watcher infrastructure to Store** — New fields on `Store`:
- `watchers []*Watcher` — registered watchers
- `callbacks []callbackEntry` — registered callbacks
- `mu sync.RWMutex` — protects watchers and callbacks (separate from SQLite serialisation)
- `nextID uint64` — monotonic ID for callbacks
- [ ] **`type Watcher struct`** — `Ch <-chan Event` (public read-only channel), `ch chan Event` (internal write), `group string`, `key string`, `id uint64`
- [ ] **`func (s *Store) Watch(group, key string) *Watcher`** — Create a watcher with buffered channel (cap 16). `"*"` as key matches all keys in the group. `"*"` for both group and key matches everything. Returns the watcher.
- [ ] **`func (s *Store) Unwatch(w *Watcher)`** — Remove watcher from slice, close its channel. Safe to call multiple times.
- [x] **`type Watcher struct`** — `Ch <-chan Event` (public read-only channel), `ch chan Event` (internal write), `group string`, `key string`, `id uint64`
- [x] **`func (s *Store) Watch(group, key string) *Watcher`** — Create a watcher with buffered channel (cap 16). `"*"` as key matches all keys in the group. `"*"` for both group and key matches everything. Returns the watcher.
- [x] **`func (s *Store) Unwatch(w *Watcher)`** — Remove watcher from slice, close its channel. Safe to call multiple times.
### 3.3 Callback Hook
- [ ] **`func (s *Store) OnChange(fn func(Event)) func()`** — Register a callback for all mutations. Returns an unregister function. Callbacks are called synchronously in the emitting goroutine (caller controls concurrency). This is the go-ws integration point — consumers do:
- [x] **`func (s *Store) OnChange(fn func(Event)) func()`** — Register a callback for all mutations. Returns an unregister function. Callbacks are called synchronously in the emitting goroutine (caller controls concurrency). This is the go-ws integration point — consumers do:
```go
unreg := store.OnChange(func(e store.Event) {
hub.SendToChannel("store-events", e)
@ -92,34 +92,34 @@ Reactive notification system for store mutations. Pure Go, no new deps. The go-w
### 3.4 Emit Events
- [ ] **Modify `Set()`** — After successful DB write, call `s.notify(Event{Type: EventSet, Group: group, Key: key, Value: value, Timestamp: time.Now()})`
- [ ] **Modify `SetWithTTL()`** — Same as Set but includes TTL event
- [ ] **Modify `Delete()`** — Emit `EventDelete` after successful DB write
- [ ] **Modify `DeleteGroup()`** — Emit `EventDeleteGroup` with Key="" after successful DB write
- [ ] **`func (s *Store) notify(e Event)`** — Internal method:
- [x] **Modify `Set()`** — After successful DB write, call `s.notify(Event{Type: EventSet, Group: group, Key: key, Value: value, Timestamp: time.Now()})`
- [x] **Modify `SetWithTTL()`** — Same as Set but includes TTL event
- [x] **Modify `Delete()`** — Emit `EventDelete` after successful DB write
- [x] **Modify `DeleteGroup()`** — Emit `EventDeleteGroup` with Key="" after successful DB write
- [x] **`func (s *Store) notify(e Event)`** — Internal method:
1. Lock `s.mu` (read lock), iterate watchers: if watcher matches (group/key or wildcard), non-blocking send to `w.ch` (drop if full — don't block writer)
2. Call each callback `fn(e)` synchronously
3. Unlock
### 3.5 ScopedStore Events
- [ ] **ScopedStore mutations emit events with full prefixed group** — No extra work needed since ScopedStore delegates to Store methods which already emit. The Event.Group will contain the full `namespace:group` string, which is correct for consumers.
- [x] **ScopedStore mutations emit events with full prefixed group** — No extra work needed since ScopedStore delegates to Store methods which already emit. The Event.Group will contain the full `namespace:group` string, which is correct for consumers.
### 3.6 Tests (`events_test.go`)
- [ ] **Watch specific key** — Set triggers event on matching watcher, non-matching key gets nothing
- [ ] **Watch wildcard `"*"`** — Multiple Sets to different keys in same group all trigger
- [ ] **Watch all `("*", "*")`** — All mutations across all groups trigger
- [ ] **Unwatch stops delivery** — After Unwatch, no more events on channel, channel is closed
- [ ] **Delete triggers event** — EventDelete with correct group/key
- [ ] **DeleteGroup triggers event** — EventDeleteGroup with empty Key
- [ ] **OnChange callback fires** — Register callback, Set/Delete triggers it
- [ ] **OnChange unregister** — After calling returned func, callback stops firing
- [ ] **Buffer-full doesn't block** — Fill channel buffer (16 events), verify next Set doesn't block/deadlock
- [ ] **Multiple watchers on same key** — Both receive events independently
- [ ] **Concurrent Watch/Unwatch** — 10 goroutines adding/removing watchers while Sets happen (race test)
- [ ] **ScopedStore events** — ScopedStore Set triggers event with prefixed group name
- [ ] **Existing tests still pass** — No regressions
- [x] **Watch specific key** — Set triggers event on matching watcher, non-matching key gets nothing
- [x] **Watch wildcard `"*"`** — Multiple Sets to different keys in same group all trigger
- [x] **Watch all `("*", "*")`** — All mutations across all groups trigger
- [x] **Unwatch stops delivery** — After Unwatch, no more events on channel, channel is closed
- [x] **Delete triggers event** — EventDelete with correct group/key
- [x] **DeleteGroup triggers event** — EventDeleteGroup with empty Key
- [x] **OnChange callback fires** — Register callback, Set/Delete triggers it
- [x] **OnChange unregister** — After calling returned func, callback stops firing
- [x] **Buffer-full doesn't block** — Fill channel buffer (16 events), verify next Set doesn't block/deadlock
- [x] **Multiple watchers on same key** — Both receive events independently
- [x] **Concurrent Watch/Unwatch** — 10 goroutines adding/removing watchers while Sets happen (race test)
- [x] **ScopedStore events** — ScopedStore Set triggers event with prefixed group name
- [x] **Existing tests still pass** — No regressions. Coverage: 94.7% -> 95.5%.
---

180
events.go Normal file
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@ -0,0 +1,180 @@
package store
import (
"sync"
"sync/atomic"
"time"
)
// EventType describes the kind of store mutation that occurred.
type EventType int
const (
// EventSet indicates a key was created or updated.
EventSet EventType = iota
// EventDelete indicates a single key was removed.
EventDelete
// EventDeleteGroup indicates all keys in a group were removed.
EventDeleteGroup
)
// String returns a human-readable label for the event type.
func (t EventType) String() string {
switch t {
case EventSet:
return "set"
case EventDelete:
return "delete"
case EventDeleteGroup:
return "delete_group"
default:
return "unknown"
}
}
// Event describes a single store mutation. Key is empty for EventDeleteGroup.
// Value is only populated for EventSet.
type Event struct {
Type EventType
Group string
Key string
Value string
Timestamp time.Time
}
// Watcher receives events matching a group/key filter. Use Store.Watch to
// create one and Store.Unwatch to stop delivery.
type Watcher struct {
// Ch is the public read-only channel that consumers select on.
Ch <-chan Event
// ch is the internal write channel (same underlying channel as Ch).
ch chan Event
group string
key string
id uint64
}
// callbackEntry pairs a change callback with its unique ID for unregistration.
type callbackEntry struct {
id uint64
fn func(Event)
}
// watcherBufSize is the capacity of each watcher's buffered channel.
const watcherBufSize = 16
// Watch creates a new watcher that receives events matching the given group and
// key. Use "*" as a wildcard: ("mygroup", "*") matches all keys in that group,
// ("*", "*") matches every mutation. The returned Watcher has a buffered
// channel (cap 16); events are dropped if the consumer falls behind.
func (s *Store) Watch(group, key string) *Watcher {
ch := make(chan Event, watcherBufSize)
w := &Watcher{
Ch: ch,
ch: ch,
group: group,
key: key,
id: atomic.AddUint64(&s.nextID, 1),
}
s.mu.Lock()
s.watchers = append(s.watchers, w)
s.mu.Unlock()
return w
}
// Unwatch removes a watcher and closes its channel. Safe to call multiple
// times; subsequent calls are no-ops.
func (s *Store) Unwatch(w *Watcher) {
s.mu.Lock()
defer s.mu.Unlock()
for i, existing := range s.watchers {
if existing.id == w.id {
// Remove from slice (order doesn't matter).
s.watchers[i] = s.watchers[len(s.watchers)-1]
s.watchers[len(s.watchers)-1] = nil
s.watchers = s.watchers[:len(s.watchers)-1]
close(w.ch)
return
}
}
// Already unwatched — no-op.
}
// OnChange registers a callback that fires on every store mutation. Callbacks
// are called synchronously in the goroutine that performed the write, so the
// caller controls concurrency. Returns an unregister function; calling it stops
// future invocations.
//
// This is the integration point for go-ws and similar consumers:
//
// unreg := store.OnChange(func(e store.Event) {
// hub.SendToChannel("store-events", e)
// })
// defer unreg()
func (s *Store) OnChange(fn func(Event)) func() {
id := atomic.AddUint64(&s.nextID, 1)
entry := callbackEntry{id: id, fn: fn}
s.mu.Lock()
s.callbacks = append(s.callbacks, entry)
s.mu.Unlock()
// Return an idempotent unregister function.
var once sync.Once
return func() {
once.Do(func() {
s.mu.Lock()
defer s.mu.Unlock()
for i, cb := range s.callbacks {
if cb.id == id {
s.callbacks[i] = s.callbacks[len(s.callbacks)-1]
s.callbacks[len(s.callbacks)-1] = callbackEntry{}
s.callbacks = s.callbacks[:len(s.callbacks)-1]
return
}
}
})
}
}
// notify dispatches an event to all matching watchers and callbacks. It must be
// called after a successful DB write. Watcher sends are non-blocking — if a
// channel buffer is full the event is silently dropped to avoid blocking the
// writer.
func (s *Store) notify(e Event) {
s.mu.RLock()
defer s.mu.RUnlock()
for _, w := range s.watchers {
if !watcherMatches(w, e) {
continue
}
// Non-blocking send: drop the event rather than block the writer.
select {
case w.ch <- e:
default:
}
}
for _, cb := range s.callbacks {
cb.fn(e)
}
}
// watcherMatches reports whether a watcher's filter matches the given event.
func watcherMatches(w *Watcher, e Event) bool {
if w.group != "*" && w.group != e.Group {
return false
}
if w.key != "*" && w.key != e.Key {
// EventDeleteGroup has an empty Key — only wildcard watchers or
// group-level watchers (key="*") should receive it.
return false
}
return true
}

430
events_test.go Normal file
View file

@ -0,0 +1,430 @@
package store
import (
"fmt"
"sync"
"sync/atomic"
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
// ---------------------------------------------------------------------------
// Watch — specific key
// ---------------------------------------------------------------------------
func TestWatch_Good_SpecificKey(t *testing.T) {
s, _ := New(":memory:")
defer s.Close()
w := s.Watch("config", "theme")
defer s.Unwatch(w)
require.NoError(t, s.Set("config", "theme", "dark"))
select {
case e := <-w.Ch:
assert.Equal(t, EventSet, e.Type)
assert.Equal(t, "config", e.Group)
assert.Equal(t, "theme", e.Key)
assert.Equal(t, "dark", e.Value)
assert.False(t, e.Timestamp.IsZero())
case <-time.After(time.Second):
t.Fatal("timed out waiting for event")
}
// A Set to a different key in the same group should NOT trigger this watcher.
require.NoError(t, s.Set("config", "colour", "blue"))
select {
case e := <-w.Ch:
t.Fatalf("unexpected event for non-matching key: %+v", e)
case <-time.After(50 * time.Millisecond):
// Expected: no event.
}
}
// ---------------------------------------------------------------------------
// Watch — wildcard key "*"
// ---------------------------------------------------------------------------
func TestWatch_Good_WildcardKey(t *testing.T) {
s, _ := New(":memory:")
defer s.Close()
w := s.Watch("config", "*")
defer s.Unwatch(w)
require.NoError(t, s.Set("config", "theme", "dark"))
require.NoError(t, s.Set("config", "colour", "blue"))
received := drainEvents(w.Ch, 2, time.Second)
require.Len(t, received, 2)
assert.Equal(t, "theme", received[0].Key)
assert.Equal(t, "colour", received[1].Key)
}
// ---------------------------------------------------------------------------
// Watch — wildcard ("*", "*") matches everything
// ---------------------------------------------------------------------------
func TestWatch_Good_WildcardAll(t *testing.T) {
s, _ := New(":memory:")
defer s.Close()
w := s.Watch("*", "*")
defer s.Unwatch(w)
require.NoError(t, s.Set("g1", "k1", "v1"))
require.NoError(t, s.Set("g2", "k2", "v2"))
require.NoError(t, s.Delete("g1", "k1"))
require.NoError(t, s.DeleteGroup("g2"))
received := drainEvents(w.Ch, 4, time.Second)
require.Len(t, received, 4)
assert.Equal(t, EventSet, received[0].Type)
assert.Equal(t, EventSet, received[1].Type)
assert.Equal(t, EventDelete, received[2].Type)
assert.Equal(t, EventDeleteGroup, received[3].Type)
}
// ---------------------------------------------------------------------------
// Unwatch — stops delivery, channel closed
// ---------------------------------------------------------------------------
func TestUnwatch_Good_StopsDelivery(t *testing.T) {
s, _ := New(":memory:")
defer s.Close()
w := s.Watch("g", "k")
s.Unwatch(w)
// Channel should be closed.
_, open := <-w.Ch
assert.False(t, open, "channel should be closed after Unwatch")
// Set after Unwatch should not panic or block.
require.NoError(t, s.Set("g", "k", "v"))
}
func TestUnwatch_Good_Idempotent(t *testing.T) {
s, _ := New(":memory:")
defer s.Close()
w := s.Watch("g", "k")
// Calling Unwatch multiple times should not panic.
s.Unwatch(w)
s.Unwatch(w) // second call is a no-op
}
// ---------------------------------------------------------------------------
// Delete triggers event
// ---------------------------------------------------------------------------
func TestWatch_Good_DeleteEvent(t *testing.T) {
s, _ := New(":memory:")
defer s.Close()
w := s.Watch("g", "k")
defer s.Unwatch(w)
require.NoError(t, s.Set("g", "k", "v"))
// Drain the Set event.
<-w.Ch
require.NoError(t, s.Delete("g", "k"))
select {
case e := <-w.Ch:
assert.Equal(t, EventDelete, e.Type)
assert.Equal(t, "g", e.Group)
assert.Equal(t, "k", e.Key)
assert.Empty(t, e.Value, "Delete events should have empty Value")
case <-time.After(time.Second):
t.Fatal("timed out waiting for delete event")
}
}
// ---------------------------------------------------------------------------
// DeleteGroup triggers event
// ---------------------------------------------------------------------------
func TestWatch_Good_DeleteGroupEvent(t *testing.T) {
s, _ := New(":memory:")
defer s.Close()
// A wildcard-key watcher for the group should receive DeleteGroup events.
w := s.Watch("g", "*")
defer s.Unwatch(w)
require.NoError(t, s.Set("g", "a", "1"))
require.NoError(t, s.Set("g", "b", "2"))
// Drain Set events.
<-w.Ch
<-w.Ch
require.NoError(t, s.DeleteGroup("g"))
select {
case e := <-w.Ch:
assert.Equal(t, EventDeleteGroup, e.Type)
assert.Equal(t, "g", e.Group)
assert.Empty(t, e.Key, "DeleteGroup events should have empty Key")
case <-time.After(time.Second):
t.Fatal("timed out waiting for delete_group event")
}
}
// ---------------------------------------------------------------------------
// OnChange — callback fires on mutations
// ---------------------------------------------------------------------------
func TestOnChange_Good_Fires(t *testing.T) {
s, _ := New(":memory:")
defer s.Close()
var events []Event
var mu sync.Mutex
unreg := s.OnChange(func(e Event) {
mu.Lock()
events = append(events, e)
mu.Unlock()
})
defer unreg()
require.NoError(t, s.Set("g", "k", "v"))
require.NoError(t, s.Delete("g", "k"))
mu.Lock()
defer mu.Unlock()
require.Len(t, events, 2)
assert.Equal(t, EventSet, events[0].Type)
assert.Equal(t, EventDelete, events[1].Type)
}
// ---------------------------------------------------------------------------
// OnChange — unregister stops callback
// ---------------------------------------------------------------------------
func TestOnChange_Good_Unregister(t *testing.T) {
s, _ := New(":memory:")
defer s.Close()
var count atomic.Int32
unreg := s.OnChange(func(e Event) {
count.Add(1)
})
require.NoError(t, s.Set("g", "k", "v1"))
assert.Equal(t, int32(1), count.Load())
unreg()
require.NoError(t, s.Set("g", "k", "v2"))
assert.Equal(t, int32(1), count.Load(), "callback should not fire after unregister")
// Calling unreg again should not panic.
unreg()
}
// ---------------------------------------------------------------------------
// Buffer-full doesn't block the writer
// ---------------------------------------------------------------------------
func TestWatch_Good_BufferFullDoesNotBlock(t *testing.T) {
s, _ := New(":memory:")
defer s.Close()
w := s.Watch("g", "*")
defer s.Unwatch(w)
// Fill the buffer (cap 16) plus extra writes. None should block.
done := make(chan struct{})
go func() {
defer close(done)
for i := 0; i < 32; i++ {
require.NoError(t, s.Set("g", fmt.Sprintf("k%d", i), "v"))
}
}()
select {
case <-done:
// Success: all writes completed without blocking.
case <-time.After(5 * time.Second):
t.Fatal("writes blocked — buffer-full condition caused deadlock")
}
// Drain what we can — should get exactly watcherBufSize events.
var received int
for range watcherBufSize {
select {
case <-w.Ch:
received++
default:
}
}
assert.Equal(t, watcherBufSize, received, "should receive exactly buffer-size events")
}
// ---------------------------------------------------------------------------
// Multiple watchers on same key
// ---------------------------------------------------------------------------
func TestWatch_Good_MultipleWatchersSameKey(t *testing.T) {
s, _ := New(":memory:")
defer s.Close()
w1 := s.Watch("g", "k")
w2 := s.Watch("g", "k")
defer s.Unwatch(w1)
defer s.Unwatch(w2)
require.NoError(t, s.Set("g", "k", "v"))
// Both watchers should receive the event independently.
select {
case e := <-w1.Ch:
assert.Equal(t, EventSet, e.Type)
case <-time.After(time.Second):
t.Fatal("w1 timed out")
}
select {
case e := <-w2.Ch:
assert.Equal(t, EventSet, e.Type)
case <-time.After(time.Second):
t.Fatal("w2 timed out")
}
}
// ---------------------------------------------------------------------------
// Concurrent Watch/Unwatch during writes (race test)
// ---------------------------------------------------------------------------
func TestWatch_Good_ConcurrentWatchUnwatch(t *testing.T) {
s, _ := New(":memory:")
defer s.Close()
const goroutines = 10
const ops = 50
var wg sync.WaitGroup
// Writers — continuously mutate the store.
wg.Add(1)
go func() {
defer wg.Done()
for i := 0; i < goroutines*ops; i++ {
_ = s.Set("g", fmt.Sprintf("k%d", i), "v")
}
}()
// Watchers — add and remove watchers concurrently.
for g := 0; g < goroutines; g++ {
wg.Add(1)
go func() {
defer wg.Done()
for i := 0; i < ops; i++ {
w := s.Watch("g", "*")
// Drain a few events to exercise the channel path.
for range 3 {
select {
case <-w.Ch:
case <-time.After(time.Millisecond):
}
}
s.Unwatch(w)
}
}()
}
wg.Wait()
// If we got here without a data race or panic, the test passes.
}
// ---------------------------------------------------------------------------
// ScopedStore events — prefixed group name
// ---------------------------------------------------------------------------
func TestWatch_Good_ScopedStoreEvents(t *testing.T) {
s, _ := New(":memory:")
defer s.Close()
sc, err := NewScoped(s, "tenant-a")
require.NoError(t, err)
// Watch on the underlying store with the full prefixed group name.
w := s.Watch("tenant-a:config", "theme")
defer s.Unwatch(w)
require.NoError(t, sc.Set("config", "theme", "dark"))
select {
case e := <-w.Ch:
assert.Equal(t, EventSet, e.Type)
assert.Equal(t, "tenant-a:config", e.Group)
assert.Equal(t, "theme", e.Key)
assert.Equal(t, "dark", e.Value)
case <-time.After(time.Second):
t.Fatal("timed out waiting for scoped store event")
}
}
// ---------------------------------------------------------------------------
// EventType.String()
// ---------------------------------------------------------------------------
func TestEventType_String(t *testing.T) {
assert.Equal(t, "set", EventSet.String())
assert.Equal(t, "delete", EventDelete.String())
assert.Equal(t, "delete_group", EventDeleteGroup.String())
assert.Equal(t, "unknown", EventType(99).String())
}
// ---------------------------------------------------------------------------
// SetWithTTL emits events
// ---------------------------------------------------------------------------
func TestWatch_Good_SetWithTTLEmitsEvent(t *testing.T) {
s, _ := New(":memory:")
defer s.Close()
w := s.Watch("g", "k")
defer s.Unwatch(w)
require.NoError(t, s.SetWithTTL("g", "k", "ttl-val", time.Hour))
select {
case e := <-w.Ch:
assert.Equal(t, EventSet, e.Type)
assert.Equal(t, "g", e.Group)
assert.Equal(t, "k", e.Key)
assert.Equal(t, "ttl-val", e.Value)
case <-time.After(time.Second):
t.Fatal("timed out waiting for SetWithTTL event")
}
}
// ---------------------------------------------------------------------------
// Helpers
// ---------------------------------------------------------------------------
// drainEvents collects up to n events from ch within the given timeout.
func drainEvents(ch <-chan Event, n int, timeout time.Duration) []Event {
var events []Event
deadline := time.After(timeout)
for range n {
select {
case e := <-ch:
events = append(events, e)
case <-deadline:
return events
}
}
return events
}

10
store.go
View file

@ -25,6 +25,12 @@ type Store struct {
cancel context.CancelFunc
wg sync.WaitGroup
purgeInterval time.Duration // interval between background purge cycles
// Event hooks (Phase 3).
watchers []*Watcher
callbacks []callbackEntry
mu sync.RWMutex // protects watchers and callbacks
nextID uint64 // monotonic ID for watchers and callbacks
}
// New creates a Store at the given SQLite path. Use ":memory:" for tests.
@ -108,6 +114,7 @@ func (s *Store) Set(group, key, value string) error {
if err != nil {
return fmt.Errorf("store.Set: %w", err)
}
s.notify(Event{Type: EventSet, Group: group, Key: key, Value: value, Timestamp: time.Now()})
return nil
}
@ -124,6 +131,7 @@ func (s *Store) SetWithTTL(group, key, value string, ttl time.Duration) error {
if err != nil {
return fmt.Errorf("store.SetWithTTL: %w", err)
}
s.notify(Event{Type: EventSet, Group: group, Key: key, Value: value, Timestamp: time.Now()})
return nil
}
@ -133,6 +141,7 @@ func (s *Store) Delete(group, key string) error {
if err != nil {
return fmt.Errorf("store.Delete: %w", err)
}
s.notify(Event{Type: EventDelete, Group: group, Key: key, Timestamp: time.Now()})
return nil
}
@ -155,6 +164,7 @@ func (s *Store) DeleteGroup(group string) error {
if err != nil {
return fmt.Errorf("store.DeleteGroup: %w", err)
}
s.notify(Event{Type: EventDeleteGroup, Group: group, Timestamp: time.Now()})
return nil
}