Files
letta-server/letta/services/provider_trace_backends/factory.py
Kian Jones 9418ab9815 feat: add provider trace backend abstraction for multi-backend telemetry (#8814)
* feat: add provider trace backend abstraction for multi-backend telemetry

Introduces a pluggable backend system for provider traces:
- Base class with async/sync create and read interfaces
- PostgreSQL backend (existing behavior)
- ClickHouse backend (via OTEL instrumentation)
- Socket backend (writes to Unix socket for crouton sidecar)
- Factory for instantiating backends from config

Refactors TelemetryManager to use backends with support for:
- Multi-backend writes (concurrent via asyncio.gather)
- Primary backend for reads (first in config list)
- Graceful error handling per backend

Config: LETTA_TELEMETRY_PROVIDER_TRACE_BACKEND (comma-separated)
Example: "postgres,socket" for dual-write to Postgres and crouton

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Co-Authored-By: Letta <noreply@letta.com>

* feat: add protocol version to socket backend records

Adds PROTOCOL_VERSION constant to socket backend:
- Included in every telemetry record sent to crouton
- Must match ProtocolVersion in apps/crouton/main.go
- Enables crouton to detect and reject incompatible messages

🐙 Generated with [Letta Code](https://letta.com)

Co-Authored-By: Letta <noreply@letta.com>

* fix: remove organization_id from ProviderTraceCreate calls

The organization_id is now handled via the actor parameter in the
telemetry manager, not through ProviderTraceCreate schema. This fixes
validation errors after changing ProviderTraceCreate to inherit from
BaseProviderTrace which forbids extra fields.

🐙 Generated with [Letta Code](https://letta.com)

Co-Authored-By: Letta <noreply@letta.com>

* consolidate provider trace

* add clickhouse-connect to fix bug on main lmao

* auto generated sdk changes, and deployment details, and clikchouse prefix bug and added fields to runs trace return api

* auto generated sdk changes, and deployment details, and clikchouse prefix bug and added fields to runs trace return api

* consolidate provider trace

* consolidate provider trace bug fix

---------

Co-authored-by: Letta <noreply@letta.com>
2026-01-19 15:54:43 -08:00

53 lines
1.8 KiB
Python

"""Factory for creating provider trace backends."""
from functools import lru_cache
from letta.services.provider_trace_backends.base import ProviderTraceBackend, ProviderTraceBackendClient
def _create_backend(backend: ProviderTraceBackend | str) -> ProviderTraceBackendClient:
"""Create a single backend instance."""
from letta.settings import telemetry_settings
backend_str = backend.value if isinstance(backend, ProviderTraceBackend) else backend
match backend_str:
case "clickhouse":
from letta.services.provider_trace_backends.clickhouse import ClickhouseProviderTraceBackend
return ClickhouseProviderTraceBackend()
case "socket":
from letta.services.provider_trace_backends.socket import SocketProviderTraceBackend
return SocketProviderTraceBackend(socket_path=telemetry_settings.socket_path)
case "postgres" | _:
from letta.services.provider_trace_backends.postgres import PostgresProviderTraceBackend
return PostgresProviderTraceBackend()
@lru_cache(maxsize=1)
def get_provider_trace_backends() -> list[ProviderTraceBackendClient]:
"""
Get all configured provider trace backends.
Returns cached singleton instances for each configured backend.
Supports multiple backends for dual-write scenarios (e.g., migration).
"""
from letta.settings import telemetry_settings
backends = telemetry_settings.provider_trace_backends
return [_create_backend(b) for b in backends]
def get_provider_trace_backend() -> ProviderTraceBackendClient:
"""
Get the primary (first) configured provider trace backend.
For backwards compatibility and read operations.
"""
backends = get_provider_trace_backends()
return backends[0] if backends else _create_backend("postgres")