[Packet transport] Ping timeout sensor (#8694)

esphome/components/packet_transport/binary_sensor.py

@@ -1,19 +1,76 @@
 import esphome.codegen as cg
 from esphome.components import binary_sensor
-from esphome.const import CONF_ID
+import esphome.config_validation as cv
+from esphome.const import (
+    CONF_DATA,
+    CONF_ID,
+    CONF_NAME,
+    CONF_STATUS,
+    CONF_TYPE,
+    DEVICE_CLASS_CONNECTIVITY,
+    ENTITY_CATEGORY_DIAGNOSTIC,
+)
+import esphome.final_validate as fv
 
 from . import (
+    CONF_ENCRYPTION,
+    CONF_PING_PONG_ENABLE,
     CONF_PROVIDER,
+    CONF_PROVIDERS,
     CONF_REMOTE_ID,
     CONF_TRANSPORT_ID,
+    PacketTransport,
     packet_transport_sensor_schema,
+    provider_name_validate,
 )
 
-CONFIG_SCHEMA = packet_transport_sensor_schema(binary_sensor.binary_sensor_schema())
+STATUS_SENSOR_SCHEMA = binary_sensor.binary_sensor_schema(
+    device_class=DEVICE_CLASS_CONNECTIVITY,
+    entity_category=ENTITY_CATEGORY_DIAGNOSTIC,
+).extend(
+    {
+        cv.GenerateID(CONF_TRANSPORT_ID): cv.use_id(PacketTransport),
+        cv.Required(CONF_PROVIDER): provider_name_validate,
+    }
+)
+
+CONFIG_SCHEMA = cv.typed_schema(
+    {
+        CONF_DATA: packet_transport_sensor_schema(binary_sensor.binary_sensor_schema()),
+        CONF_STATUS: STATUS_SENSOR_SCHEMA,
+    },
+    key=CONF_TYPE,
+    default_type=CONF_DATA,
+)
+
+
+def _final_validate(config):
+    if config[CONF_TYPE] != CONF_STATUS:
+        # Only run this validation if a status sensor is being configured
+        return config
+    full_config = fv.full_config.get()
+    transport_path = full_config.get_path_for_id(config[CONF_TRANSPORT_ID])[:-1]
+    transport_config = full_config.get_config_for_path(transport_path)
+    if transport_config[CONF_PING_PONG_ENABLE] and any(
+        CONF_ENCRYPTION in p
+        for p in transport_config[CONF_PROVIDERS]
+        if p[CONF_NAME] == config[CONF_PROVIDER]
+    ):
+        return config
+    raise cv.Invalid(
+        "Status sensor requires ping-pong to be enabled and the nominated provider to use encryption."
+    )
+
+
+FINAL_VALIDATE_SCHEMA = _final_validate
 
 
 async def to_code(config):
     var = await binary_sensor.new_binary_sensor(config)
     comp = await cg.get_variable(config[CONF_TRANSPORT_ID])
+    if config[CONF_TYPE] == CONF_STATUS:
+        cg.add(comp.set_provider_status_sensor(config[CONF_PROVIDER], var))
+        cg.add_define("USE_STATUS_SENSOR")
+    else:  # CONF_DATA is default
         remote_id = str(config.get(CONF_REMOTE_ID) or config.get(CONF_ID))
         cg.add(comp.add_remote_binary_sensor(config[CONF_PROVIDER], remote_id, var))

esphome/components/packet_transport/packet_transport.cpp

@@ -317,8 +317,37 @@ void PacketTransport::update() {
   auto now = millis() / 1000;
   if (this->last_key_time_ + this->ping_pong_recyle_time_ < now) {
     this->resend_ping_key_ = this->ping_pong_enable_;
+    ESP_LOGV(TAG, "Ping request, age %u", now - this->last_key_time_);
     this->last_key_time_ = now;
   }
+  for (const auto &provider : this->providers_) {
+    uint32_t key_response_age = now - provider.second.last_key_response_time;
+    if (key_response_age > (this->ping_pong_recyle_time_ * 2u)) {
+#ifdef USE_STATUS_SENSOR
+      if (provider.second.status_sensor != nullptr && provider.second.status_sensor->state) {
+        ESP_LOGI(TAG, "Ping status for %s timeout at %u with age %u", provider.first.c_str(), now, key_response_age);
+        provider.second.status_sensor->publish_state(false);
+      }
+#endif
+#ifdef USE_SENSOR
+      for (auto &sensor : this->remote_sensors_[provider.first]) {
+        sensor.second->publish_state(NAN);
+      }
+#endif
+#ifdef USE_BINARY_SENSOR
+      for (auto &sensor : this->remote_binary_sensors_[provider.first]) {
+        sensor.second->invalidate_state();
+      }
+#endif
+    } else {
+#ifdef USE_STATUS_SENSOR
+      if (provider.second.status_sensor != nullptr && !provider.second.status_sensor->state) {
+        ESP_LOGI(TAG, "Ping status for %s restored at %u with age %u", provider.first.c_str(), now, key_response_age);
+        provider.second.status_sensor->publish_state(true);
+      }
+#endif
+    }
+  }
 }
 
 void PacketTransport::add_key_(const char *name, uint32_t key) {
@@ -437,7 +466,8 @@ void PacketTransport::process_(const std::vector<uint8_t> &data) {
     if (decoder.decode(PING_KEY, key) == DECODE_OK) {
       if (key == this->ping_key_) {
         ping_key_seen = true;
-        ESP_LOGV(TAG, "Found good ping key %X", (unsigned) key);
+        provider.last_key_response_time = millis() / 1000;
+        ESP_LOGV(TAG, "Found good ping key %X at timestamp %" PRIu32, (unsigned) key, provider.last_key_response_time);
       } else {
         ESP_LOGV(TAG, "Unknown ping key %X", (unsigned) key);
       }

esphome/components/packet_transport/packet_transport.h

@@ -8,7 +8,7 @@
 #ifdef USE_BINARY_SENSOR
 #include "esphome/components/binary_sensor/binary_sensor.h"
 #endif
-#
+
 #include <vector>
 #include <map>
 
@@ -27,6 +27,10 @@ struct Provider {
   std::vector<uint8_t> encryption_key;
   const char *name;
   uint32_t last_code[2];
+  uint32_t last_key_response_time;
+#ifdef USE_STATUS_SENSOR
+  binary_sensor::BinarySensor *status_sensor{nullptr};
+#endif
 };
 
 #ifdef USE_SENSOR
@@ -75,10 +79,7 @@ class PacketTransport : public PollingComponent {
 
   void add_provider(const char *hostname) {
     if (this->providers_.count(hostname) == 0) {
-      Provider provider;
+      Provider provider{};
-      provider.encryption_key = std::vector<uint8_t>{};
-      provider.last_code[0] = 0;
-      provider.last_code[1] = 0;
       provider.name = hostname;
       this->providers_[hostname] = provider;
 #ifdef USE_SENSOR
@@ -97,6 +98,11 @@ class PacketTransport : public PollingComponent {
   void set_provider_encryption(const char *name, std::vector<uint8_t> key) {
     this->providers_[name].encryption_key = std::move(key);
   }
+#ifdef USE_STATUS_SENSOR
+  void set_provider_status_sensor(const char *name, binary_sensor::BinarySensor *sensor) {
+    this->providers_[name].status_sensor = sensor;
+  }
+#endif
   void set_platform_name(const char *name) { this->platform_name_ = name; }
 
  protected:

esphome/core/defines.h

@@ -86,6 +86,7 @@
 #define USE_SELECT
 #define USE_SENSOR
 #define USE_STATUS_LED
+#define USE_STATUS_SENSOR
 #define USE_SWITCH
 #define USE_TEXT
 #define USE_TEXT_SENSOR

tests/components/packet_transport/common.yaml

@@ -36,5 +36,9 @@ binary_sensor:
   - platform: packet_transport
     provider: unencrypted-device
     id: other_binary_sensor_id
+  - platform: packet_transport
+    provider: some-device-name
+    type: status
+    name: Some-Device Status
   - platform: template
     id: binary_sensor_id1