Files
esphome/esphome/components/api/api_server.h
T
J. Nick KostonandClaude Opus 4.6 b256b68265 Mark leaf Component subclasses as final
Mark 12 leaf classes (no subclasses) as final to enable
compiler devirtualization of virtual calls, reducing code
size and improving performance on embedded targets.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-03-15 09:51:13 -10:00

337 lines
13 KiB
C++

#pragma once
#include "esphome/core/defines.h"
#ifdef USE_API
#include "api_buffer.h"
#include "api_noise_context.h"
#include "api_pb2.h"
#include "api_pb2_service.h"
#include "esphome/components/socket/socket.h"
#include "esphome/core/automation.h"
#include "esphome/core/component.h"
#include "esphome/core/controller.h"
#include "esphome/core/log.h"
#include "esphome/core/string_ref.h"
#include "list_entities.h"
#include "subscribe_state.h"
#ifdef USE_LOGGER
#include "esphome/components/logger/logger.h"
#endif
#ifdef USE_CAMERA
#include "esphome/components/camera/camera.h"
#endif
#include <vector>
namespace esphome::api {
#ifdef USE_API_USER_DEFINED_ACTIONS
// Forward declaration - full definition in user_services.h
class UserServiceDescriptor;
#endif
#ifdef USE_API_NOISE
struct SavedNoisePsk {
psk_t psk;
} PACKED; // NOLINT
#endif
class APIServer final : public Component,
public Controller
#ifdef USE_CAMERA
,
public camera::CameraListener
#endif
{
public:
APIServer();
void setup() override;
uint16_t get_port() const;
float get_setup_priority() const override;
void loop() override;
void dump_config() override;
void on_shutdown() override;
bool teardown() override;
#ifdef USE_LOGGER
void on_log(uint8_t level, const char *tag, const char *message, size_t message_len);
#endif
#ifdef USE_CAMERA
void on_camera_image(const std::shared_ptr<camera::CameraImage> &image) override;
#endif
void set_port(uint16_t port);
void set_reboot_timeout(uint32_t reboot_timeout);
void set_batch_delay(uint16_t batch_delay);
uint16_t get_batch_delay() const { return batch_delay_; }
void set_listen_backlog(uint8_t listen_backlog) { this->listen_backlog_ = listen_backlog; }
void set_max_connections(uint8_t max_connections) { this->max_connections_ = max_connections; }
// Get reference to shared buffer for API connections
APIBuffer &get_shared_buffer_ref() { return shared_write_buffer_; }
#ifdef USE_API_NOISE
bool save_noise_psk(psk_t psk, bool make_active = true);
bool clear_noise_psk(bool make_active = true);
void set_noise_psk(psk_t psk) { this->noise_ctx_.set_psk(psk); }
APINoiseContext &get_noise_ctx() { return this->noise_ctx_; }
#endif // USE_API_NOISE
void handle_disconnect(APIConnection *conn);
#ifdef USE_BINARY_SENSOR
void on_binary_sensor_update(binary_sensor::BinarySensor *obj) override;
#endif
#ifdef USE_COVER
void on_cover_update(cover::Cover *obj) override;
#endif
#ifdef USE_FAN
void on_fan_update(fan::Fan *obj) override;
#endif
#ifdef USE_LIGHT
void on_light_update(light::LightState *obj) override;
#endif
#ifdef USE_SENSOR
void on_sensor_update(sensor::Sensor *obj) override;
#endif
#ifdef USE_SWITCH
void on_switch_update(switch_::Switch *obj) override;
#endif
#ifdef USE_TEXT_SENSOR
void on_text_sensor_update(text_sensor::TextSensor *obj) override;
#endif
#ifdef USE_CLIMATE
void on_climate_update(climate::Climate *obj) override;
#endif
#ifdef USE_NUMBER
void on_number_update(number::Number *obj) override;
#endif
#ifdef USE_DATETIME_DATE
void on_date_update(datetime::DateEntity *obj) override;
#endif
#ifdef USE_DATETIME_TIME
void on_time_update(datetime::TimeEntity *obj) override;
#endif
#ifdef USE_DATETIME_DATETIME
void on_datetime_update(datetime::DateTimeEntity *obj) override;
#endif
#ifdef USE_TEXT
void on_text_update(text::Text *obj) override;
#endif
#ifdef USE_SELECT
void on_select_update(select::Select *obj) override;
#endif
#ifdef USE_LOCK
void on_lock_update(lock::Lock *obj) override;
#endif
#ifdef USE_VALVE
void on_valve_update(valve::Valve *obj) override;
#endif
#ifdef USE_MEDIA_PLAYER
void on_media_player_update(media_player::MediaPlayer *obj) override;
#endif
#ifdef USE_WATER_HEATER
void on_water_heater_update(water_heater::WaterHeater *obj) override;
#endif
#ifdef USE_API_HOMEASSISTANT_SERVICES
void send_homeassistant_action(const HomeassistantActionRequest &call);
#ifdef USE_API_HOMEASSISTANT_ACTION_RESPONSES
// Action response handling
using ActionResponseCallback = std::function<void(const class ActionResponse &)>;
void register_action_response_callback(uint32_t call_id, ActionResponseCallback callback);
void handle_action_response(uint32_t call_id, bool success, StringRef error_message);
#ifdef USE_API_HOMEASSISTANT_ACTION_RESPONSES_JSON
void handle_action_response(uint32_t call_id, bool success, StringRef error_message, const uint8_t *response_data,
size_t response_data_len);
#endif // USE_API_HOMEASSISTANT_ACTION_RESPONSES_JSON
#endif // USE_API_HOMEASSISTANT_ACTION_RESPONSES
#endif // USE_API_HOMEASSISTANT_SERVICES
#ifdef USE_API_USER_DEFINED_ACTIONS
void initialize_user_services(std::initializer_list<UserServiceDescriptor *> services) {
this->user_services_.assign(services);
}
#ifdef USE_API_CUSTOM_SERVICES
// Only compile push_back method when custom_services: true (external components)
void register_user_service(UserServiceDescriptor *descriptor) { this->user_services_.push_back(descriptor); }
#endif
#ifdef USE_API_USER_DEFINED_ACTION_RESPONSES
// Action call context management - supports concurrent calls from multiple clients
// Returns server-generated action_call_id to avoid collisions when clients use same call_id
uint32_t register_active_action_call(uint32_t client_call_id, APIConnection *conn);
void unregister_active_action_call(uint32_t action_call_id);
void unregister_active_action_calls_for_connection(APIConnection *conn);
// Send response for a specific action call (uses action_call_id, sends client_call_id in response)
void send_action_response(uint32_t action_call_id, bool success, StringRef error_message);
#ifdef USE_API_USER_DEFINED_ACTION_RESPONSES_JSON
void send_action_response(uint32_t action_call_id, bool success, StringRef error_message,
const uint8_t *response_data, size_t response_data_len);
#endif // USE_API_USER_DEFINED_ACTION_RESPONSES_JSON
#endif // USE_API_USER_DEFINED_ACTION_RESPONSES
#endif
#ifdef USE_HOMEASSISTANT_TIME
void request_time();
#endif
#ifdef USE_ALARM_CONTROL_PANEL
void on_alarm_control_panel_update(alarm_control_panel::AlarmControlPanel *obj) override;
#endif
#ifdef USE_EVENT
void on_event(event::Event *obj) override;
#endif
#ifdef USE_UPDATE
void on_update(update::UpdateEntity *obj) override;
#endif
#ifdef USE_ZWAVE_PROXY
void on_zwave_proxy_request(const ZWaveProxyRequest &msg);
#endif
#ifdef USE_IR_RF
void send_infrared_rf_receive_event(uint32_t device_id, uint32_t key, const std::vector<int32_t> *timings);
#endif
bool is_connected() const { return !this->clients_.empty(); }
bool is_connected_with_state_subscription() const;
#ifdef USE_API_HOMEASSISTANT_STATES
struct HomeAssistantStateSubscription {
const char *entity_id; // Pointer to flash (internal) or heap (external)
const char *attribute; // Pointer to flash or nullptr (nullptr means no attribute)
std::function<void(StringRef)> callback;
bool once;
// Dynamic storage for external components using std::string API (custom_api_device.h)
// These are only allocated when using the std::string overload (nullptr for const char* overload)
std::unique_ptr<std::string> entity_id_dynamic_storage;
std::unique_ptr<std::string> attribute_dynamic_storage;
};
// New const char* overload (for internal components - zero allocation)
void subscribe_home_assistant_state(const char *entity_id, const char *attribute, std::function<void(StringRef)> &&f);
void get_home_assistant_state(const char *entity_id, const char *attribute, std::function<void(StringRef)> &&f);
// std::string overload with StringRef callback (for custom_api_device.h with zero-allocation callback)
void subscribe_home_assistant_state(std::string entity_id, optional<std::string> attribute,
std::function<void(StringRef)> &&f);
void get_home_assistant_state(std::string entity_id, optional<std::string> attribute,
std::function<void(StringRef)> &&f);
// Legacy std::string overload (for custom_api_device.h - converts StringRef to std::string for callback)
void subscribe_home_assistant_state(std::string entity_id, optional<std::string> attribute,
std::function<void(const std::string &)> &&f);
void get_home_assistant_state(std::string entity_id, optional<std::string> attribute,
std::function<void(const std::string &)> &&f);
const std::vector<HomeAssistantStateSubscription> &get_state_subs() const;
#endif
#ifdef USE_API_USER_DEFINED_ACTIONS
const std::vector<UserServiceDescriptor *> &get_user_services() const { return this->user_services_; }
#endif
#ifdef USE_API_CLIENT_CONNECTED_TRIGGER
Trigger<std::string, std::string> *get_client_connected_trigger() { return &this->client_connected_trigger_; }
#endif
#ifdef USE_API_CLIENT_DISCONNECTED_TRIGGER
Trigger<std::string, std::string> *get_client_disconnected_trigger() { return &this->client_disconnected_trigger_; }
#endif
protected:
// Accept incoming socket connections. Only called when socket has pending connections.
void __attribute__((noinline)) accept_new_connections_();
// Remove a disconnected client by index. Swaps with last element and pops.
void __attribute__((noinline)) remove_client_(size_t client_index);
#ifdef USE_API_NOISE
bool update_noise_psk_(const SavedNoisePsk &new_psk, const LogString *save_log_msg, const LogString *fail_log_msg,
const psk_t &active_psk, bool make_active);
#endif // USE_API_NOISE
#ifdef USE_API_HOMEASSISTANT_STATES
// Helper methods to reduce code duplication
void add_state_subscription_(const char *entity_id, const char *attribute, std::function<void(StringRef)> &&f,
bool once);
void add_state_subscription_(std::string entity_id, optional<std::string> attribute,
std::function<void(StringRef)> &&f, bool once);
// Legacy helper: wraps std::string callback and delegates to StringRef version
void add_state_subscription_(std::string entity_id, optional<std::string> attribute,
std::function<void(const std::string &)> &&f, bool once);
#endif // USE_API_HOMEASSISTANT_STATES
// No explicit close() needed — listen sockets have no active connections on
// failure/shutdown. Destructor handles fd cleanup (close or abort per platform).
inline void destroy_socket_() {
delete this->socket_;
this->socket_ = nullptr;
}
void socket_failed_(const LogString *msg);
// Pointers and pointer-like types first (4 bytes each)
socket::ListenSocket *socket_{nullptr};
#ifdef USE_API_CLIENT_CONNECTED_TRIGGER
Trigger<std::string, std::string> client_connected_trigger_;
#endif
#ifdef USE_API_CLIENT_DISCONNECTED_TRIGGER
Trigger<std::string, std::string> client_disconnected_trigger_;
#endif
// 4-byte aligned types
uint32_t reboot_timeout_{300000};
uint32_t last_connected_{0};
// Vectors and strings (12 bytes each on 32-bit)
std::vector<std::unique_ptr<APIConnection>> clients_;
// Shared proto write buffer for all connections.
// Not pre-allocated: all send paths call prepare_first_message_buffer() which
// reserves the exact needed size. Pre-allocating here would cause heap fragmentation
// since the buffer would almost always reallocate on first use.
APIBuffer shared_write_buffer_;
#ifdef USE_API_HOMEASSISTANT_STATES
std::vector<HomeAssistantStateSubscription> state_subs_;
#endif
#ifdef USE_API_USER_DEFINED_ACTIONS
std::vector<UserServiceDescriptor *> user_services_;
#ifdef USE_API_USER_DEFINED_ACTION_RESPONSES
// Active action calls - supports concurrent calls from multiple clients
// Uses server-generated action_call_id to avoid collisions when multiple clients use same call_id
struct ActiveActionCall {
uint32_t action_call_id; // Server-generated unique ID (passed to actions)
uint32_t client_call_id; // Client's original call_id (used in response)
APIConnection *connection;
};
std::vector<ActiveActionCall> active_action_calls_;
uint32_t next_action_call_id_{1}; // Counter for generating unique action_call_ids
#endif // USE_API_USER_DEFINED_ACTION_RESPONSES
#endif
#ifdef USE_API_HOMEASSISTANT_ACTION_RESPONSES
struct PendingActionResponse {
uint32_t call_id;
ActionResponseCallback callback;
};
std::vector<PendingActionResponse> action_response_callbacks_;
#endif
// Group smaller types together
uint16_t port_{6053};
uint16_t batch_delay_{100};
// Connection limits - these defaults will be overridden by config values
// from cv.SplitDefault in __init__.py which sets platform-specific defaults
uint8_t listen_backlog_{4};
uint8_t max_connections_{8};
bool shutting_down_ = false;
// 7 bytes used, 1 byte padding
#ifdef USE_API_NOISE
APINoiseContext noise_ctx_;
ESPPreferenceObject noise_pref_;
#endif // USE_API_NOISE
};
extern APIServer *global_api_server; // NOLINT(cppcoreguidelines-avoid-non-const-global-variables)
template<typename... Ts> class APIConnectedCondition : public Condition<Ts...> {
TEMPLATABLE_VALUE(bool, state_subscription_only)
public:
bool check(const Ts &...x) override {
if (this->state_subscription_only_.value(x...)) {
return global_api_server->is_connected_with_state_subscription();
}
return global_api_server->is_connected();
}
};
} // namespace esphome::api
#endif