resolve review comment

routstr/core/admin.py

@@ -31,6 +31,7 @@ from .db import (
 )
 from .log_manager import log_manager
 from .logging import get_logger
+from .provider_slugs import allocate_unique_provider_slug
 from .settings import SettingsService, settings
 
 logger = get_logger(__name__)
@@ -726,11 +727,6 @@ def _validate_slug(value: str) -> str:
     return candidate
 
 
-def _generate_slug(provider_type: str) -> str:
-    base = re.sub(r"[^a-z0-9]+", "-", provider_type.lower()).strip("-") or "provider"
-    return f"{base}-{secrets.token_hex(3)}"
-
-
 async def _ensure_unique_slug(
     session: AsyncSession, slug: str, exclude_id: int | None = None
 ) -> None:
@@ -883,20 +879,7 @@ async def create_upstream_provider(
             slug = _validate_slug(payload.slug)
             await _ensure_unique_slug(session, slug)
         else:
-            for _ in range(8):
+            slug = await allocate_unique_provider_slug(session, payload.provider_type)
-                slug = _generate_slug(payload.provider_type)
-                existing = await session.exec(
-                    select(UpstreamProviderRow).where(
-                        UpstreamProviderRow.slug == slug
-                    )
-                )
-                if existing.first() is None:
-                    break
-            else:
-                raise HTTPException(
-                    status_code=500,
-                    detail="Could not generate a unique slug",
-                )
 
         provider = UpstreamProviderRow(
             slug=slug,

routstr/core/provider_slugs.py

@@ -0,0 +1,65 @@
+from __future__ import annotations
+
+import re
+from itertools import count
+from typing import Collection
+
+from sqlmodel import select
+from sqlmodel.ext.asyncio.session import AsyncSession
+
+from .db import UpstreamProviderRow
+
+_SLUG_BASE_PATTERN = re.compile(r"[^a-z0-9]+")
+_MAX_SLUG_LENGTH = 64
+
+
+def provider_slug_base(provider_type: str) -> str:
+    """Return a deterministic slug base for a provider type."""
+    base = _SLUG_BASE_PATTERN.sub("-", provider_type.lower()).strip("-")
+    if not base:
+        base = "provider"
+    elif base.isdigit():
+        base = f"provider-{base}"
+    elif len(base) < 3:
+        base = f"{base}-provider"
+
+    if len(base) > _MAX_SLUG_LENGTH:
+        base = base[:_MAX_SLUG_LENGTH].rstrip("-") or "provider"
+    return base
+
+
+def _slug_candidate(base: str, suffix_number: int) -> str:
+    if suffix_number == 1:
+        return base
+
+    suffix = f"-{suffix_number}"
+    max_base_length = _MAX_SLUG_LENGTH - len(suffix)
+    return f"{base[:max_base_length].rstrip('-')}{suffix}"
+
+
+async def allocate_unique_provider_slug(
+    session: AsyncSession,
+    provider_type: str,
+    reserved_slugs: Collection[str] = (),
+) -> str:
+    """Allocate a stable, deterministic provider slug.
+
+    The first provider of a type gets ``openai``; later collisions get
+    ``openai-2``, ``openai-3``, etc. ``reserved_slugs`` covers rows staged in
+    memory but not flushed yet, such as settings/env seeding.
+    """
+    base = provider_slug_base(provider_type)
+    reserved = {slug.lower() for slug in reserved_slugs}
+
+    for suffix_number in count(1):
+        candidate = _slug_candidate(base, suffix_number)
+        if candidate in reserved:
+            continue
+
+        result = await session.exec(
+            select(UpstreamProviderRow).where(UpstreamProviderRow.slug == candidate)
+        )
+        if result.first() is None:
+            return candidate
+
+    raise RuntimeError("unreachable")

routstr/upstream/helpers.py

@@ -12,6 +12,7 @@ from sqlmodel import select
 
 from ..core import get_logger
 from ..core.db import AsyncSession, ModelRow, UpstreamProviderRow, create_session
+from ..core.provider_slugs import allocate_unique_provider_slug
 from ..payment.models import Model
 from .base import BaseUpstreamProvider
 
@@ -250,6 +251,7 @@ async def _seed_providers_from_settings(
 
     providers_to_add: list[UpstreamProviderRow] = []
     seeded_provider_keys: set[tuple[str, str]] = set()
+    reserved_slugs: set[str] = set()
 
     provider_classes_by_type = {
         cls.provider_type: cls
@@ -279,8 +281,13 @@ async def _seed_providers_from_settings(
                     )
                 )
                 if not result.first():
+                    slug = await allocate_unique_provider_slug(
+                        session, provider_type, reserved_slugs
+                    )
+                    reserved_slugs.add(slug)
                     providers_to_add.append(
                         UpstreamProviderRow(
+                            slug=slug,
                             provider_type=provider_type,
                             base_url=base_url,
                             api_key=api_key,
@@ -299,8 +306,13 @@ async def _seed_providers_from_settings(
             )
         )
         if not result.first():
+            slug = await allocate_unique_provider_slug(
+                session, "ollama", reserved_slugs
+            )
+            reserved_slugs.add(slug)
             providers_to_add.append(
                 UpstreamProviderRow(
+                    slug=slug,
                     provider_type="ollama",
                     base_url=ollama_base_url,
                     api_key=ollama_api_key,
@@ -320,8 +332,13 @@ async def _seed_providers_from_settings(
                 )
             )
             if not result.first():
+                slug = await allocate_unique_provider_slug(
+                    session, "azure", reserved_slugs
+                )
+                reserved_slugs.add(slug)
                 providers_to_add.append(
                     UpstreamProviderRow(
+                        slug=slug,
                         provider_type="azure",
                         base_url=base_url,
                         api_key=api_key,
@@ -342,8 +359,13 @@ async def _seed_providers_from_settings(
                 )
             )
             if not result.first():
+                slug = await allocate_unique_provider_slug(
+                    session, "custom", reserved_slugs
+                )
+                reserved_slugs.add(slug)
                 providers_to_add.append(
                     UpstreamProviderRow(
+                        slug=slug,
                         provider_type="custom",
                         base_url=base_url,
                         api_key=api_key,
@@ -356,7 +378,7 @@ async def _seed_providers_from_settings(
         session.add(provider)
         logger.info(
             f"Seeding {provider.provider_type} provider",  # type: ignore[str-format]
-            extra={"base_url": provider.base_url},
+            extra={"base_url": provider.base_url, "slug": provider.slug},
         )
 
 

tests/unit/test_provider_slugs.py

@@ -0,0 +1,117 @@
+from __future__ import annotations
+
+import pytest
+from sqlalchemy.ext.asyncio import create_async_engine
+from sqlmodel import SQLModel, select
+from sqlmodel.ext.asyncio.session import AsyncSession
+
+from routstr.core.db import UpstreamProviderRow
+from routstr.core.provider_slugs import (
+    allocate_unique_provider_slug,
+    provider_slug_base,
+)
+from routstr.upstream.helpers import _seed_providers_from_settings
+
+
+@pytest.mark.asyncio
+async def test_allocate_unique_provider_slug_is_deterministic_with_suffixes() -> None:
+    engine = create_async_engine("sqlite+aiosqlite:///:memory:")
+    async with engine.begin() as conn:
+        await conn.run_sync(SQLModel.metadata.create_all)
+
+    async with AsyncSession(engine) as session:
+        session.add(
+            UpstreamProviderRow(
+                slug="openai",
+                provider_type="openai",
+                base_url="https://api.openai.com/v1",
+                api_key="key-1",
+            )
+        )
+        await session.commit()
+
+        assert await allocate_unique_provider_slug(session, "openai") == "openai-2"
+        assert (
+            await allocate_unique_provider_slug(session, "openai", {"openai-2"})
+            == "openai-3"
+        )
+
+    await engine.dispose()
+
+
+def test_provider_slug_base_sanitizes_provider_type() -> None:
+    assert provider_slug_base("OpenAI Compatible") == "openai-compatible"
+    assert provider_slug_base("!!!") == "provider"
+    assert provider_slug_base("AI") == "ai-provider"
+    assert provider_slug_base("123") == "provider-123"
+
+
+@pytest.mark.asyncio
+async def test_seed_providers_from_settings_sets_deterministic_slug(
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    engine = create_async_engine("sqlite+aiosqlite:///:memory:")
+    async with engine.begin() as conn:
+        await conn.run_sync(SQLModel.metadata.create_all)
+
+    monkeypatch.setenv("OPENAI_API_KEY", "seeded-openai-key")
+
+    class SettingsStub:
+        chat_completions_api_version: str | None = None
+        upstream_base_url: str | None = None
+        upstream_api_key: str = ""
+
+    async with AsyncSession(engine) as session:
+        await _seed_providers_from_settings(session, SettingsStub())  # type: ignore[arg-type]
+        await session.commit()
+
+        result = await session.exec(select(UpstreamProviderRow))
+        providers: list[UpstreamProviderRow] = list(result.all())
+
+    assert [(p.provider_type, p.slug) for p in providers] == [("openai", "openai")]
+
+    await engine.dispose()
+
+
+@pytest.mark.asyncio
+async def test_seed_providers_from_settings_keeps_slug_stable_on_reseed(
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    engine = create_async_engine("sqlite+aiosqlite:///:memory:")
+    async with engine.begin() as conn:
+        await conn.run_sync(SQLModel.metadata.create_all)
+
+    monkeypatch.setenv("OPENAI_API_KEY", "seeded-openai-key")
+
+    class SettingsStub:
+        chat_completions_api_version: str | None = None
+        upstream_base_url: str | None = None
+        upstream_api_key: str = ""
+
+    async with AsyncSession(engine) as session:
+        session.add(
+            UpstreamProviderRow(
+                slug="openai",
+                provider_type="openai",
+                base_url="https://example.invalid/v1",
+                api_key="other-key",
+            )
+        )
+        await session.commit()
+
+        await _seed_providers_from_settings(session, SettingsStub())  # type: ignore[arg-type]
+        await session.commit()
+        await _seed_providers_from_settings(session, SettingsStub())  # type: ignore[arg-type]
+        await session.commit()
+
+        result = await session.exec(
+            select(UpstreamProviderRow).order_by(UpstreamProviderRow.slug)
+        )
+        providers: list[UpstreamProviderRow] = list(result.all())
+
+    assert [(p.provider_type, p.slug) for p in providers] == [
+        ("openai", "openai"),
+        ("openai", "openai-2"),
+    ]
+
+    await engine.dispose()