015 add tracing

app/config.py

@@ -48,6 +48,13 @@ class AdapterConfig(BaseModel):
     cdek_cache_ttl_seconds: int = Field(default=900, gt=0)
 
 
+class ObservabilityConfig(BaseModel):
+    enabled: bool = False
+    service_name: str = Field(..., min_length=1)
+    otlp_endpoint: str = Field(..., min_length=1)
+    otlp_insecure: bool = True
+
+
 class Settings(BaseSettings):
     model_config = SettingsConfigDict(
         extra="ignore",
@@ -58,6 +65,7 @@ class Settings(BaseSettings):
     business_logic: BusinessLogicConfig = Field(default_factory=BusinessLogicConfig)
     repository: RepositoryConfig = Field(default_factory=RepositoryConfig)
     adapter: AdapterConfig = Field(default_factory=AdapterConfig)
+    observability: ObservabilityConfig
 
     @classmethod
     def settings_customise_sources(
@@ -85,6 +93,7 @@ class _RequiredYamlSections(BaseModel):
     business_logic: dict[str, Any]
     repository: dict[str, Any]
     adapter: dict[str, Any]
+    observability: dict[str, Any]
 
 
 def _resolve_runtime_config_file() -> str: