postgres: add support for context management

postgres/postgres.go

@@ -129,12 +129,12 @@ func New(config ...Config) *Storage {
 	return store
 }
 
-// Get value by key
-func (s *Storage) Get(key string) ([]byte, error) {
+// GetWithContext gets value by key with context
+func (s *Storage) GetWithContext(ctx context.Context, key string) ([]byte, error) {
 	if len(key) <= 0 {
 		return nil, nil
 	}
-	row := s.db.QueryRow(context.Background(), s.sqlSelect, key)
+	row := s.db.QueryRow(ctx, s.sqlSelect, key)
 	// Add db response to data
 	var (
 		data []byte
@@ -155,8 +155,13 @@ func (s *Storage) Get(key string) ([]byte, error) {
 	return data, nil
 }
 
-// Set key with value
-func (s *Storage) Set(key string, val []byte, exp time.Duration) error {
+// Get gets value by key
+func (s *Storage) Get(key string) ([]byte, error) {
+	return s.GetWithContext(context.Background(), key)
+}
+
+// SetWithContext sets key with value
+func (s *Storage) SetWithContext(ctx context.Context, key string, val []byte, exp time.Duration) error {
 	// Ain't Nobody Got Time For That
 	if len(key) <= 0 || len(val) <= 0 {
 		return nil
@@ -165,26 +170,41 @@ func (s *Storage) Set(key string, val []byte, exp time.Duration) error {
 	if exp != 0 {
 		expSeconds = time.Now().Add(exp).Unix()
 	}
-	_, err := s.db.Exec(context.Background(), s.sqlInsert, key, val, expSeconds, val, expSeconds)
+	_, err := s.db.Exec(ctx, s.sqlInsert, key, val, expSeconds, val, expSeconds)
 	return err
 }
 
-// Delete entry by key
-func (s *Storage) Delete(key string) error {
+// Set sets key with value
+func (s *Storage) Set(key string, val []byte, exp time.Duration) error {
+	return s.SetWithContext(context.Background(), key, val, exp)
+}
+
+// DeleteWithContext deletes entry by key
+func (s *Storage) DeleteWithContext(ctx context.Context, key string) error {
 	// Ain't Nobody Got Time For That
 	if len(key) <= 0 {
 		return nil
 	}
-	_, err := s.db.Exec(context.Background(), s.sqlDelete, key)
+	_, err := s.db.Exec(ctx, s.sqlDelete, key)
 	return err
 }
 
-// Reset all entries, including unexpired
-func (s *Storage) Reset() error {
-	_, err := s.db.Exec(context.Background(), s.sqlReset)
+// Delete deletes entry by key
+func (s *Storage) Delete(key string) error {
+	return s.DeleteWithContext(context.Background(), key)
+}
+
+// ResetWithContext resets all entries with context, including unexpired ones
+func (s *Storage) ResetWithContext(ctx context.Context) error {
+	_, err := s.db.Exec(ctx, s.sqlReset)
 	return err
 }
 
+// Reset resets all entries, including unexpired ones
+func (s *Storage) Reset() error {
+	return s.ResetWithContext(context.Background())
+}
+
 // Close the database
 func (s *Storage) Close() error {
 	s.done <- struct{}{}

postgres/postgres_test.go

@@ -239,6 +239,19 @@ func Test_Postgres_Set(t *testing.T) {
 	require.NoError(t, err)
 }
 
+func Test_Postgres_SetWithContext(t *testing.T) {
+	var (
+		key = "john"
+		val = []byte("doe")
+	)
+
+	ctx, cancel := context.WithCancel(context.Background())
+	cancel()
+
+	err := testStore.SetWithContext(ctx, key, val, 0)
+	require.ErrorIs(t, err, context.Canceled)
+}
+
 func Test_Postgres_Set_Override(t *testing.T) {
 	var (
 		key = "john"
@@ -272,6 +285,23 @@ func Test_Postgres_Get(t *testing.T) {
 	require.Equal(t, val, result)
 }
 
+func Test_Postgres_GetWithContext(t *testing.T) {
+	var (
+		key = "john"
+		val = []byte("doe")
+	)
+
+	err := testStore.Set(key, val, 0)
+	require.NoError(t, err)
+
+	ctx, cancel := context.WithCancel(context.Background())
+	cancel()
+
+	result, err := testStore.GetWithContext(ctx, key)
+	require.ErrorIs(t, err, context.Canceled)
+	require.Zero(t, len(result))
+}
+
 func Test_Postgres_Set_Expiration(t *testing.T) {
 	var (
 		key = "john"
@@ -332,6 +362,22 @@ func Test_Postgres_Delete(t *testing.T) {
 	require.Zero(t, len(result))
 }
 
+func Test_Postgres_DeleteWithContext(t *testing.T) {
+	var (
+		key = "john"
+		val = []byte("doe")
+	)
+
+	err := testStore.Set(key, val, 0)
+	require.NoError(t, err)
+
+	ctx, cancel := context.WithCancel(context.Background())
+	cancel()
+
+	err = testStore.DeleteWithContext(ctx, key)
+	require.ErrorIs(t, err, context.Canceled)
+}
+
 func Test_Postgres_Reset(t *testing.T) {
 	val := []byte("doe")
 
@@ -356,6 +402,30 @@ func Test_Postgres_Reset(t *testing.T) {
 	require.Zero(t, len(result))
 }
 
+func Test_Postgres_ResetWithContext(t *testing.T) {
+	val := []byte("doe")
+
+	err := testStore.Set("john1", val, 0)
+	require.NoError(t, err)
+
+	err = testStore.Set("john2", val, 0)
+	require.NoError(t, err)
+
+	ctx, cancel := context.WithCancel(context.Background())
+	cancel()
+
+	err = testStore.ResetWithContext(ctx)
+	require.ErrorIs(t, err, context.Canceled)
+
+	result, err := testStore.Get("john1")
+	require.NoError(t, err)
+	require.NotZero(t, len(result))
+
+	result, err = testStore.Get("john2")
+	require.NoError(t, err)
+	require.NotZero(t, len(result))
+}
+
 func Test_Postgres_GC(t *testing.T) {
 	testVal := []byte("doe")