Fix descriptors not being deleted (esphome#4104)

esphome/components/bluetooth_proxy/bluetooth_proxy.cpp

@@ -109,8 +109,7 @@ void BluetoothProxy::loop() {
       // after sending them to save memory. If something actually needs them
       // it can parse them again.
       for (auto &characteristic : service->characteristics) {
-        characteristic->parsed = false;
-        characteristic->descriptors.clear();
+        characteristic->release_descriptors();
       }
       connection->send_service_++;
     }

esphome/components/esp32_ble_client/ble_characteristic.cpp

@@ -16,6 +16,13 @@ BLECharacteristic::~BLECharacteristic() {
     delete desc;  // NOLINT(cppcoreguidelines-owning-memory)
 }
 
+void BLECharacteristic::release_descriptors() {
+  this->parsed = false;
+  for (auto &desc : this->descriptors)
+    delete desc;  // NOLINT(cppcoreguidelines-owning-memory)
+  this->descriptors.clear();
+}
+
 void BLECharacteristic::parse_descriptors() {
   this->parsed = true;
   uint16_t offset = 0;

esphome/components/esp32_ble_client/ble_characteristic.h

@@ -24,6 +24,7 @@ class BLECharacteristic {
   esp_gatt_char_prop_t properties;
   std::vector<BLEDescriptor *> descriptors;
   void parse_descriptors();
+  void release_descriptors();
   BLEDescriptor *get_descriptor(espbt::ESPBTUUID uuid);
   BLEDescriptor *get_descriptor(uint16_t uuid);
   BLEDescriptor *get_descriptor_by_handle(uint16_t handle);

esphome/components/esp32_ble_client/ble_client_base.cpp

@@ -76,6 +76,13 @@ void BLEClientBase::disconnect() {
   }
 }
 
+void BLEClientBase::release_services() {
+  for (auto &svc : this->services_)
+    delete svc;  // NOLINT(cppcoreguidelines-owning-memory)
+  this->services_.clear();
+  esp_ble_gattc_cache_clean(this->remote_bda_);
+}
+
 bool BLEClientBase::gattc_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t esp_gattc_if,
                                         esp_ble_gattc_cb_param_t *param) {
   if (event == ESP_GATTC_REG_EVT && this->app_id != param->reg.app_id)
@@ -132,10 +139,7 @@ bool BLEClientBase::gattc_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_
         return false;
       ESP_LOGV(TAG, "[%d] [%s] ESP_GATTC_DISCONNECT_EVT, reason %d", this->connection_index_,
                this->address_str_.c_str(), param->disconnect.reason);
-      for (auto &svc : this->services_)
-        delete svc;  // NOLINT(cppcoreguidelines-owning-memory)
-      this->services_.clear();
-      esp_ble_gattc_cache_clean(this->remote_bda_);
+      this->release_services();
       this->set_state(espbt::ClientState::IDLE);
       break;
     }

esphome/components/esp32_ble_client/ble_client_base.h

@@ -34,6 +34,7 @@ class BLEClientBase : public espbt::ESPBTClient, public Component {
   void gap_event_handler(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t *param) override;
   void connect() override;
   void disconnect();
+  void release_services();
 
   bool connected() { return this->state_ == espbt::ClientState::ESTABLISHED; }
 

esphome/components/esp32_ble_client/ble_service.cpp

@@ -29,6 +29,13 @@ BLEService::~BLEService() {
     delete chr;  // NOLINT(cppcoreguidelines-owning-memory)
 }
 
+void BLEService::release_characteristics() {
+  this->parsed = false;
+  for (auto &chr : this->characteristics)
+    delete chr;  // NOLINT(cppcoreguidelines-owning-memory)
+  this->characteristics.clear();
+}
+
 void BLEService::parse_characteristics() {
   this->parsed = true;
   uint16_t offset = 0;

esphome/components/esp32_ble_client/ble_service.h

@@ -25,6 +25,7 @@ class BLEService {
   std::vector<BLECharacteristic *> characteristics;
   BLEClientBase *client;
   void parse_characteristics();
+  void release_characteristics();
   BLECharacteristic *get_characteristic(espbt::ESPBTUUID uuid);
   BLECharacteristic *get_characteristic(uint16_t uuid);
 };