chore: remove metrics for simplicity

pyproject.toml

@@ -34,7 +34,6 @@ dependencies = [
     "aiohttp>=3.11.0,<4",
     "cryptography>=46.0.0",
     "numpy>=2.0.0,<3",
-    "prometheus-client>=0.21.0,<1",
     "aioquic>=1.2.0,<2",
     "pyyaml>=6.0.0,<7",
 ]

src/lean_spec/subspecs/api/endpoints/__init__.py

@@ -1,10 +1,9 @@
 """API endpoint specifications."""
 
-from . import checkpoints, health, metrics, states
+from . import checkpoints, health, states
 
 __all__ = [
     "checkpoints",
     "health",
-    "metrics",
     "states",
 ]

src/lean_spec/subspecs/api/routes.py

@@ -4,12 +4,11 @@
 
 from aiohttp import web
 
-from .endpoints import checkpoints, health, metrics, states
+from .endpoints import checkpoints, health, states
 
 ROUTES: dict[str, Callable[[web.Request], Awaitable[web.Response]]] = {
     "/lean/v0/health": health.handle,
     "/lean/v0/states/finalized": states.handle_finalized,
     "/lean/v0/checkpoints/justified": checkpoints.handle_justified,
-    "/metrics": metrics.handle,
 }
 """All API routes mapped to their handlers."""

src/lean_spec/subspecs/sync/service.py

@@ -42,7 +42,6 @@
 from dataclasses import dataclass, field
 from typing import TYPE_CHECKING, Any
 
-from lean_spec.subspecs import metrics
 from lean_spec.subspecs.chain.clock import SlotClock
 from lean_spec.subspecs.containers import (
     Block,
@@ -241,24 +240,12 @@ def _process_block_wrapper(
         # Delegate to the actual block processor.
         #
         # The processor validates the block and updates forkchoice state.
-        with metrics.block_processing_time.time():
-            new_store = self.process_block(store, block)
+        new_store = self.process_block(store, block)
 
-        # Track metrics after successful processing.
+        # Track processed blocks.
         #
         # We only count blocks that pass validation and update the store.
         self._blocks_processed += 1
-        metrics.blocks_processed.inc()
-
-        # Update chain state metrics.
-        metrics.head_slot.set(float(new_store.blocks[new_store.head].slot))
-        metrics.justified_slot.set(float(new_store.latest_justified.slot))
-        metrics.finalized_slot.set(float(new_store.latest_finalized.slot))
-
-        # Update validator count from head state.
-        head_state = new_store.states.get(new_store.head)
-        if head_state is not None:
-            metrics.validators_count.set(float(len(head_state.validators)))
 
         # Persist block and state to database if available.
         #

src/lean_spec/subspecs/validator/service.py

@@ -37,7 +37,6 @@
 from dataclasses import dataclass, field
 from typing import TYPE_CHECKING, cast
 
-from lean_spec.subspecs import metrics
 from lean_spec.subspecs.chain.clock import Interval, SlotClock
 from lean_spec.subspecs.chain.config import ATTESTATION_COMMITTEE_COUNT
 from lean_spec.subspecs.containers import (
@@ -297,7 +296,6 @@ async def _maybe_produce_block(self, slot: Slot) -> None:
                 self._store_proposer_attestation_signature(signed_block, validator_index)
 
                 self._blocks_produced += 1
-                metrics.blocks_proposed.inc()
 
                 # Emit the block for network propagation.
                 await self.on_block(signed_block)
@@ -371,7 +369,6 @@ async def _produce_attestations(self, slot: Slot) -> None:
             signed_attestation = self._sign_attestation(attestation_data, validator_index)
 
             self._attestations_produced += 1
-            metrics.attestations_produced.inc()
 
             # Process attestation locally before publishing.
             #