Merge pull request #6 from zvx-echo6/feature/1a-5-stream-retention

Phase 1a-5: Stream retention + adapter config refactor + unified region

docs/PHASE-1A-5-VERIFICATION.md

@@ -0,0 +1,83 @@
+# Phase 1a-5 Verification Report
+
+## Gate 5: max_bytes Self-Loop Prevention
+
+**Objective**: Verify that `max_bytes` updates to `config.streams` do NOT trigger
+a NOTIFY (preventing infinite supervisor recompute loops).
+
+**Test Procedure**:
+1. Started supervisor with stream retention enabled
+2. Directly updated `max_bytes` via SQL:
+   ```sql
+   UPDATE config.streams SET max_bytes = 209715200 WHERE name = 'CENTRAL_META';
+   ```
+3. Monitored supervisor logs for any stream change handling
+
+**Result**: PASS
+
+No NOTIFY was triggered. The column-filtered trigger in `003_add_streams_table.sql`
+correctly fires only on `max_age_s` changes:
+
+```sql
+ELSIF TG_OP = 'UPDATE' AND OLD.max_age_s IS DISTINCT FROM NEW.max_age_s THEN
+    PERFORM pg_notify('config_changed', 'streams:' || NEW.name);
+```
+
+This prevents the supervisor's `recompute_max_bytes()` from creating a feedback loop.
+
+---
+
+## Gate 6: bbox Hot-Reload
+
+**Objective**: Verify that changes to the NWS adapter's `region` bbox are
+picked up via hot-reload without supervisor restart.
+
+**Test Procedure**:
+1. Updated the NWS adapter's region via SQL:
+   ```sql
+   UPDATE config.adapters SET settings = jsonb_set(
+       settings, '{region}',
+       '{"north": 48.0, "south": 45.0, "east": -115.0, "west": -125.0}'::jsonb
+   ) WHERE name = 'nws';
+   ```
+2. Observed supervisor logs for config reload
+
+**Result**: PASS
+
+Supervisor log showed immediate config application:
+```json
+{"msg": "NWS config applied", "region": {"east": -115.0, "west": -125.0, "north": 48.0, "south": 45.0}}
+```
+
+The NOTIFY trigger on `config.adapters` fired and the supervisor's
+`_handle_adapter_change()` correctly invoked `adapter.apply_config()`.
+
+---
+
+## Additional Verification
+
+### Polygon Intersection Filter
+
+The `_geometry_intersects_region()` method was tested with:
+- Shapely 2.1.2 installed via `uv sync`
+- GeoJSON geometry parsing via `shapely.geometry.shape()`
+- Region box creation via `shapely.geometry.box()`
+- Intersection test via `region_box.intersects(feature_shape)`
+
+### Antimeridian Rejection
+
+The `RegionConfig` validator was tested:
+```python
+>>> RegionConfig(north=49.0, south=31.0, east=-170.0, west=170.0)
+ValidationError: antimeridian-crossing bboxes not supported
+```
+
+---
+
+## Verification Date
+
+2026-05-16T19:06:00Z
+
+## Verified By
+
+Claude Code (automated verification)

docs/PHASE-1B-NOTES.md

@@ -0,0 +1,55 @@
+# Phase 1B Planning Notes
+
+Design notes for Phase 1B GUI features. These are planning items, not
+implementation specifications.
+
+## Stream Retention GUI
+
+### Per-Stream Configuration
+- Show each stream from `config.streams` table
+- Editable max_age_s with preset chips: 1d, 7d, 14d, 30d, 365d
+- Custom numeric input allowed (operator can enter 90d, etc.)
+- Changes trigger NATS stream update via supervisor hot-reload
+
+### Storage Monitor
+Per stream, display:
+- **Current bytes**: Live from `nats stream info`
+- **Projected bytes**: Calculated from current rate × max_age
+- **Days remaining**: Current_bytes / rate_per_day estimate
+- Refresh: Real-time polling, not cached
+
+### Global Server Cap
+- Show `max_file_store` value as read-only reference
+- Editing requires NATS server restart (out of scope for GUI)
+- Display per-stream ceiling (30% of server cap) as context
+
+## Region Picker
+
+### Interactive Map
+- Bbox selection via click-drag rectangle
+- Same UI component for all adapters (NWS, FIRMS, USGS)
+- Stores `{north, south, east, west}` floats
+- Preview of coverage area with state/country boundaries
+
+### Preset Regions
+- Common presets: CONUS, Pacific Northwest, Mountain West
+- Quick-select buttons alongside custom draw
+
+## API Key Management
+
+### Key Storage
+- View configured API keys (alias only, not values)
+- Add new keys with alias and value
+- Values encrypted at rest in `config.api_keys`
+- Rotation: update value, track `rotated_at`
+
+### Required Keys by Adapter
+- **FIRMS** (Phase 1a-6): `MAP_KEY` for NASA FIRMS API
+- Future adapters may require additional keys
+
+## Technical Notes
+
+- All GUI changes write to `config.*` tables
+- Supervisor receives NOTIFY and hot-reloads
+- No service restarts required for config changes
+- Stream retention changes apply within 5 seconds

pyproject.toml

@@ -18,6 +18,7 @@ dependencies = [
     "nats-py>=2.14.0",
     "pydantic>=2,<3",
     "pydantic-settings>=2.7.0",
+    "shapely>=2.0",
     "tenacity>=9.1.4",
 ]
 

sql/migrations/003_add_streams_table.sql

@@ -0,0 +1,46 @@
+-- Migration: 003_add_streams_table
+-- Creates the config.streams table for JetStream stream retention configuration.
+-- Uses column-filtered NOTIFY to prevent self-loop when supervisor updates max_bytes.
+
+-- Streams configuration table
+CREATE TABLE config.streams (
+    name              TEXT PRIMARY KEY,
+    max_age_s         BIGINT NOT NULL,
+    max_bytes         BIGINT NOT NULL DEFAULT 1073741824,  -- 1GB default
+    managed_max_bytes BOOLEAN NOT NULL DEFAULT true,
+    updated_at        TIMESTAMPTZ NOT NULL DEFAULT now()
+);
+
+-- Auto-update trigger for updated_at
+CREATE TRIGGER streams_set_updated_at
+    BEFORE UPDATE ON config.streams
+    FOR EACH ROW EXECUTE FUNCTION config.set_updated_at();
+
+-- Column-filtered NOTIFY trigger for streams.
+-- Fires on INSERT/DELETE always.
+-- On UPDATE, only fires when max_age_s changes (operator-touchable field),
+-- NOT when max_bytes changes (supervisor-managed), to prevent recompute loop.
+CREATE OR REPLACE FUNCTION config.notify_streams_change()
+RETURNS trigger AS $$
+BEGIN
+    IF TG_OP = 'INSERT' OR TG_OP = 'DELETE' THEN
+        PERFORM pg_notify('config_changed', 'streams:' ||
+            COALESCE(NEW.name, OLD.name));
+    ELSIF TG_OP = 'UPDATE' AND
+          OLD.max_age_s IS DISTINCT FROM NEW.max_age_s THEN
+        PERFORM pg_notify('config_changed', 'streams:' || NEW.name);
+    END IF;
+    RETURN COALESCE(NEW, OLD);
+END;
+$$ LANGUAGE plpgsql;
+
+CREATE TRIGGER streams_notify
+    AFTER INSERT OR UPDATE OR DELETE ON config.streams
+    FOR EACH ROW EXECUTE FUNCTION config.notify_streams_change();
+
+-- Seed with current stream values from investigation
+-- CENTRAL_WX: 7d max_age (604800s), 10GB max_bytes (will be clamped to 6GB on first recompute)
+-- CENTRAL_META: 1d max_age (86400s), 100MB max_bytes (will be raised to 1GB floor)
+INSERT INTO config.streams (name, max_age_s, max_bytes) VALUES
+    ('CENTRAL_WX',   604800,  10737418240),
+    ('CENTRAL_META', 86400,   104857600);

sql/migrations/004_nws_states_to_bbox.sql

@@ -0,0 +1,11 @@
+-- Migration: 004_nws_states_to_bbox
+-- Converts NWS adapter settings from states list to region bbox.
+-- Bbox covers ID/OR/WA/MT/WY/UT/NV with buffer.
+
+UPDATE config.adapters
+SET settings = jsonb_set(
+    settings - 'states',  -- Remove states key
+    '{region}',
+    '{"north": 49.5, "south": 31.0, "east": -102.0, "west": -124.5}'::jsonb
+)
+WHERE name = 'nws';

src/central/adapter.py

@@ -2,6 +2,10 @@
 
 from abc import ABC, abstractmethod
 from collections.abc import AsyncIterator
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from central.config_models import AdapterConfig
 
 from central.models import Event
 
@@ -15,7 +19,6 @@ class SourceAdapter(ABC):
     """
     
     name: str  # short identifier, e.g. "nws"
-    cadence_s: int  # seconds between poll() calls
     
     @abstractmethod
     async def poll(self) -> AsyncIterator[Event]:
@@ -26,6 +29,17 @@ class SourceAdapter(ABC):
         """
         ...
     
+    @abstractmethod
+    async def apply_config(self, new_config: "AdapterConfig") -> None:
+        """
+        Apply new configuration to the adapter.
+        
+        Called by supervisor when config changes via hot-reload.
+        The adapter should extract relevant settings from
+        new_config.settings and update its internal state.
+        """
+        ...
+    
     async def startup(self) -> None:
         """Optional lifecycle hook called before first poll."""
         pass

src/central/adapters/nws.py

@@ -19,8 +19,9 @@ from tenacity import (
 
 from central import __version__
 from central.adapter import SourceAdapter
-from central.config import NWSAdapterConfig
+from central.config_models import AdapterConfig, RegionConfig
 from central.models import Event, Geo
+from shapely.geometry import box as shapely_box, shape as shapely_shape
 
 logger = logging.getLogger(__name__)
 
@@ -194,18 +195,75 @@ class NWSAdapter(SourceAdapter):
 
     def __init__(
         self,
-        config: NWSAdapterConfig,
+        config: AdapterConfig,
         cursor_db_path: Path,
     ) -> None:
-        self.config = config
-        self.states = set(s.upper() for s in config.states)
         self.cursor_db_path = cursor_db_path
         self._session: aiohttp.ClientSession | None = None
         self._db: sqlite3.Connection | None = None
 
+        # Extract settings from unified config
+        self.contact_email: str = config.settings.get("contact_email", "")
+
+        # Parse region from settings
+        region_dict = config.settings.get("region")
+        if region_dict:
+            self.region: RegionConfig | None = RegionConfig(**region_dict)
+        else:
+            self.region = None
+
+    async def apply_config(self, new_config: AdapterConfig) -> None:
+        """Apply new configuration from hot-reload."""
+        # Update contact email
+        self.contact_email = new_config.settings.get("contact_email", "")
+
+        # Update region
+        region_dict = new_config.settings.get("region")
+        if region_dict:
+            self.region = RegionConfig(**region_dict)
+        else:
+            self.region = None
+
+        logger.info(
+            "NWS config applied",
+            extra={
+                "region": region_dict,
+                "contact_email": self.contact_email,
+            },
+        )
+
+    def _geometry_intersects_region(self, geometry: dict[str, Any] | None) -> bool:
+        """Check if feature geometry intersects configured region bbox.
+        
+        Uses Shapely for proper polygon intersection rather than centroid-only
+        filtering, avoiding false negatives on large alert polygons.
+        """
+        if self.region is None:
+            # No region configured = accept all
+            return True
+        if geometry is None:
+            return False
+        
+        try:
+            # Build region box (west, south, east, north)
+            region_box = shapely_box(
+                self.region.west,
+                self.region.south,
+                self.region.east,
+                self.region.north,
+            )
+            
+            # Parse GeoJSON geometry to shapely shape
+            feature_shape = shapely_shape(geometry)
+            
+            return region_box.intersects(feature_shape)
+        except Exception:
+            # If geometry parsing fails, fall back to rejecting
+            return False
+
     async def startup(self) -> None:
         """Initialize HTTP session and cursor database."""
-        user_agent = f"Central/{__version__} ({self.config.contact_email})"
+        user_agent = f"Central/{__version__} ({self.contact_email})"
         self._session = aiohttp.ClientSession(
             headers={"User-Agent": user_agent},
             timeout=aiohttp.ClientTimeout(total=30),
@@ -234,7 +292,17 @@ class NWSAdapter(SourceAdapter):
         """)
         self._db.commit()
 
-        logger.info("NWS adapter started", extra={"states": list(self.states)})
+        logger.info(
+            "NWS adapter started",
+            extra={
+                "region": {
+                    "north": self.region.north,
+                    "south": self.region.south,
+                    "east": self.region.east,
+                    "west": self.region.west,
+                } if self.region else None,
+            },
+        )
 
     async def shutdown(self) -> None:
         """Close HTTP session and database."""
@@ -366,8 +434,13 @@ class NWSAdapter(SourceAdapter):
         same_codes = geocode.get("SAME", [])
         ugc_codes = geocode.get("UGC", [])
 
-        feature_states = _extract_states_from_codes(same_codes, ugc_codes)
-        if not feature_states.intersection(self.states):
+        # Compute geometry data first
+        geometry = feature.get("geometry")
+        centroid = _compute_centroid(geometry)
+        bbox = _compute_bbox(geometry)
+
+        # Filter by region bbox (client-side filtering)
+        if not self._geometry_intersects_region(geometry):
             return None
 
         event_id = feature.get("id")
@@ -388,9 +461,6 @@ class NWSAdapter(SourceAdapter):
         severity_str = props.get("severity", "Unknown")
         severity = SEVERITY_MAP.get(severity_str)
 
-        geometry = feature.get("geometry")
-        centroid = _compute_centroid(geometry)
-        bbox = _compute_bbox(geometry)
         regions = _build_regions(same_codes, ugc_codes)
         primary_region = regions[0] if regions else None
 

src/central/config_models.py

@@ -1,39 +1,72 @@
-"""Pydantic models for database-backed configuration."""
-
-from datetime import datetime
-from typing import Any
-
-from pydantic import BaseModel, Field
-
-
-class AdapterConfig(BaseModel):
-    """Configuration for a single adapter."""
-
-    name: str = Field(description="Unique adapter identifier")
-    enabled: bool = Field(default=True, description="Whether adapter is active")
-    cadence_s: int = Field(description="Poll interval in seconds")
-    settings: dict[str, Any] = Field(
-        default_factory=dict, description="Adapter-specific settings"
-    )
-    paused_at: datetime | None = Field(
-        default=None, description="When adapter was paused, if paused"
-    )
-    updated_at: datetime = Field(description="Last configuration update time")
-
-    @property
-    def is_paused(self) -> bool:
-        """Check if adapter is currently paused."""
-        return self.paused_at is not None
-
-
-class ApiKeyInfo(BaseModel):
-    """Metadata about an API key (without the decrypted value)."""
-
-    alias: str = Field(description="Key identifier/alias")
-    created_at: datetime = Field(description="When key was created")
-    rotated_at: datetime | None = Field(
-        default=None, description="Last rotation time"
-    )
-    last_used_at: datetime | None = Field(
-        default=None, description="Last usage time"
-    )
+"""Pydantic models for database-backed configuration."""
+
+from datetime import datetime
+from typing import Any
+
+from pydantic import BaseModel, Field, model_validator
+
+
+class RegionConfig(BaseModel):
+    """Geographic bounding box for adapter region filtering."""
+    
+    north: float = Field(ge=-90, le=90, description="Northern latitude bound")
+    south: float = Field(ge=-90, le=90, description="Southern latitude bound")
+    east: float = Field(ge=-180, le=180, description="Eastern longitude bound")
+    west: float = Field(ge=-180, le=180, description="Western longitude bound")
+
+    @model_validator(mode="after")
+    def validate_bounds(self) -> "RegionConfig":
+        if self.north <= self.south:
+            raise ValueError(
+                f"north ({self.north}) must be greater than south ({self.south})"
+            )
+        if self.east == self.west:
+            raise ValueError("east and west cannot be equal (zero-width bbox)")
+        if self.east < self.west:
+            raise ValueError("antimeridian-crossing bboxes not supported")
+        return self
+
+
+class AdapterConfig(BaseModel):
+    """Configuration for a single adapter."""
+
+    name: str = Field(description="Unique adapter identifier")
+    enabled: bool = Field(default=True, description="Whether adapter is active")
+    cadence_s: int = Field(description="Poll interval in seconds")
+    settings: dict[str, Any] = Field(
+        default_factory=dict, description="Adapter-specific settings"
+    )
+    paused_at: datetime | None = Field(
+        default=None, description="When adapter was paused, if paused"
+    )
+    updated_at: datetime = Field(description="Last configuration update time")
+
+    @property
+    def is_paused(self) -> bool:
+        """Check if adapter is currently paused."""
+        return self.paused_at is not None
+
+
+class StreamConfig(BaseModel):
+    """Configuration for a JetStream stream."""
+    
+    name: str = Field(description="Stream name")
+    max_age_s: int = Field(description="Maximum message age in seconds")
+    max_bytes: int = Field(description="Maximum stream size in bytes")
+    managed_max_bytes: bool = Field(
+        default=True, description="Whether max_bytes is auto-managed by supervisor"
+    )
+    updated_at: datetime = Field(description="Last configuration update time")
+
+
+class ApiKeyInfo(BaseModel):
+    """Metadata about an API key (without the decrypted value)."""
+
+    alias: str = Field(description="Key identifier/alias")
+    created_at: datetime = Field(description="When key was created")
+    rotated_at: datetime | None = Field(
+        default=None, description="Last rotation time"
+    )
+    last_used_at: datetime | None = Field(
+        default=None, description="Last usage time"
+    )

src/central/config_store.py

@@ -12,7 +12,7 @@ from typing import Any
 
 import asyncpg
 
-from central.config_models import AdapterConfig
+from central.config_models import AdapterConfig, StreamConfig
 from central.crypto import decrypt, encrypt
 
 logger = logging.getLogger(__name__)
@@ -129,6 +129,69 @@ class ConfigStore:
                 name,
             )
 
+    # -------------------------------------------------------------------------
+    # Stream configuration
+    # -------------------------------------------------------------------------
+
+    async def get_stream(self, name: str) -> StreamConfig | None:
+        """Get configuration for a specific stream."""
+        async with self._pool.acquire() as conn:
+            row = await conn.fetchrow(
+                """
+                SELECT name, max_age_s, max_bytes, managed_max_bytes, updated_at
+                FROM config.streams
+                WHERE name = $1
+                """,
+                name,
+            )
+        if row is None:
+            return None
+        return StreamConfig(**dict(row))
+
+    async def list_streams(self) -> list[StreamConfig]:
+        """List all configured streams."""
+        async with self._pool.acquire() as conn:
+            rows = await conn.fetch(
+                """
+                SELECT name, max_age_s, max_bytes, managed_max_bytes, updated_at
+                FROM config.streams
+                ORDER BY name
+                """
+            )
+        return [StreamConfig(**dict(row)) for row in rows]
+
+    async def upsert_stream(self, name: str, max_age_s: int) -> None:
+        """Insert or update a stream's max_age_s (operator-facing)."""
+        async with self._pool.acquire() as conn:
+            await conn.execute(
+                """
+                INSERT INTO config.streams (name, max_age_s, updated_at)
+                VALUES ($1, $2, now())
+                ON CONFLICT (name) DO UPDATE SET
+                    max_age_s = EXCLUDED.max_age_s,
+                    updated_at = now()
+                """,
+                name,
+                max_age_s,
+            )
+
+    async def update_stream_max_bytes(self, name: str, max_bytes: int) -> None:
+        """Update a stream's max_bytes (supervisor-internal).
+
+        This update only touches max_bytes, which does NOT trigger
+        the column-filtered NOTIFY (only max_age_s changes fire NOTIFY).
+        """
+        async with self._pool.acquire() as conn:
+            await conn.execute(
+                """
+                UPDATE config.streams
+                SET max_bytes = $2, updated_at = now()
+                WHERE name = $1
+                """,
+                name,
+                max_bytes,
+            )
+
     # -------------------------------------------------------------------------
     # API key management
     # -------------------------------------------------------------------------

src/central/stream_manager.py

@@ -0,0 +1,262 @@
+"""JetStream stream manager for retention configuration."""
+
+import logging
+import re
+from pathlib import Path
+from typing import Any
+
+from nats.js import JetStreamContext
+from nats.js.api import StreamConfig, DiscardPolicy, RetentionPolicy
+
+from central.config_models import StreamConfig as StreamConfigModel
+
+logger = logging.getLogger(__name__)
+
+# Constants
+ONE_GB = 1024 * 1024 * 1024  # 1 GiB in bytes
+NATS_CONFIG_PATH = Path("/etc/nats/nats-server.conf")
+
+
+class StreamManager:
+    """Manages JetStream stream configuration and retention."""
+
+    def __init__(self, js: JetStreamContext) -> None:
+        self._js = js
+        self._server_max_file_store: int | None = None
+
+    async def server_max_file_store_bytes(self) -> int:
+        """Get the server's max_file_store setting in bytes.
+
+        Parses the NATS server config file and caches the result.
+        Returns a default of 20GB if config cannot be read.
+        """
+        if self._server_max_file_store is not None:
+            return self._server_max_file_store
+
+        default_value = 20 * ONE_GB  # 20GB default
+
+        try:
+            config_text = NATS_CONFIG_PATH.read_text()
+
+            # Parse max_file_store value (supports GB/MB/KB suffixes)
+            match = re.search(r'max_file_store:\s*(\d+)(GB|MB|KB|G|M|K)?', config_text, re.IGNORECASE)
+            if match:
+                value = int(match.group(1))
+                suffix = (match.group(2) or "").upper()
+
+                if suffix in ("GB", "G"):
+                    value *= ONE_GB
+                elif suffix in ("MB", "M"):
+                    value *= 1024 * 1024
+                elif suffix in ("KB", "K"):
+                    value *= 1024
+                # else: assume bytes
+
+                self._server_max_file_store = value
+                logger.info(
+                    "Parsed server max_file_store",
+                    extra={"max_file_store_bytes": value},
+                )
+                return value
+
+            logger.warning(
+                "max_file_store not found in config, using default",
+                extra={"default": default_value},
+            )
+            self._server_max_file_store = default_value
+            return default_value
+
+        except Exception as e:
+            logger.warning(
+                "Failed to read NATS config, using default",
+                extra={"error": str(e), "default": default_value},
+            )
+            self._server_max_file_store = default_value
+            return default_value
+
+    def _compute_ceiling(self, server_max: int) -> int:
+        """Compute per-stream ceiling as 30% of server max_file_store."""
+        return int(server_max * 0.30)
+
+    async def ensure_stream(
+        self,
+        name: str,
+        subjects: list[str],
+        config: StreamConfigModel,
+    ) -> None:
+        """Ensure a stream exists with the given configuration.
+
+        Creates the stream if it doesn't exist, or updates it if it does.
+        Always enforces: discard=old, max_msgs=-1 (unlimited).
+        """
+        server_max = await self.server_max_file_store_bytes()
+        ceiling = self._compute_ceiling(server_max)
+
+        # Clamp max_bytes to [1GB, ceiling]
+        max_bytes = max(ONE_GB, min(config.max_bytes, ceiling))
+
+        stream_config = StreamConfig(
+            name=name,
+            subjects=subjects,
+            retention=RetentionPolicy.LIMITS,
+            discard=DiscardPolicy.OLD,
+            max_age=config.max_age_s,
+            max_bytes=max_bytes,
+            max_msgs=-1,  # Unlimited messages
+        )
+
+        try:
+            # Try to get existing stream
+            existing = await self._js.stream_info(name)
+
+            # Update if config differs
+            await self._js.update_stream(config=stream_config)
+            logger.info(
+                "Updated stream",
+                extra={
+                    "stream": name,
+                    "max_age_s": config.max_age_s,
+                    "max_bytes": max_bytes,
+                },
+            )
+
+        except Exception as e:
+            if "stream not found" in str(e).lower():
+                # Create new stream
+                await self._js.add_stream(config=stream_config)
+                logger.info(
+                    "Created stream",
+                    extra={
+                        "stream": name,
+                        "subjects": subjects,
+                        "max_age_s": config.max_age_s,
+                        "max_bytes": max_bytes,
+                    },
+                )
+            else:
+                raise
+
+    async def apply_retention(self, name: str, config: StreamConfigModel) -> None:
+        """Apply retention settings to an existing stream.
+
+        Updates max_age and max_bytes. Always enforces discard=old, max_msgs=-1.
+        """
+        server_max = await self.server_max_file_store_bytes()
+        ceiling = self._compute_ceiling(server_max)
+
+        # Clamp max_bytes to [1GB, ceiling]
+        max_bytes = max(ONE_GB, min(config.max_bytes, ceiling))
+
+        try:
+            # Get current stream config
+            info = await self._js.stream_info(name)
+            current = info.config
+
+            # Build updated config
+            updated = StreamConfig(
+                name=name,
+                subjects=current.subjects,
+                retention=RetentionPolicy.LIMITS,
+                discard=DiscardPolicy.OLD,
+                max_age=config.max_age_s,
+                max_bytes=max_bytes,
+                max_msgs=-1,
+            )
+
+            await self._js.update_stream(config=updated)
+            logger.info(
+                "Applied retention",
+                extra={
+                    "stream": name,
+                    "max_age_s": config.max_age_s,
+                    "max_bytes": max_bytes,
+                },
+            )
+
+        except Exception as e:
+            logger.error(
+                "Failed to apply retention",
+                extra={"stream": name, "error": str(e)},
+            )
+            raise
+
+    async def recompute_max_bytes(self, name: str, max_age_s: int) -> int:
+        """Recompute max_bytes based on observed throughput.
+
+        Formula: rate × max_age × 1.5 safety margin, clamped to [1GB, ceiling].
+
+        Returns the computed max_bytes value.
+        """
+        server_max = await self.server_max_file_store_bytes()
+        ceiling = self._compute_ceiling(server_max)
+
+        try:
+            info = await self._js.stream_info(name)
+            current_bytes = info.state.bytes
+            current_msgs = info.state.messages
+
+            # Get stream age from first message
+            first_seq = info.state.first_seq
+            last_seq = info.state.last_seq
+
+            if current_msgs == 0 or last_seq == 0:
+                # No messages yet, use floor
+                return ONE_GB
+
+            # Estimate message age span (approximation)
+            # Use stream's configured max_age as the observation window
+            configured_max_age = info.config.max_age
+
+            if configured_max_age > 0:
+                # Rate = current_bytes / configured_max_age (in seconds)
+                rate_per_second = current_bytes / configured_max_age
+            else:
+                # Fallback: assume 1 day of data
+                rate_per_second = current_bytes / 86400
+
+            # Project bytes needed for new max_age with 1.5x safety margin
+            projected = int(rate_per_second * max_age_s * 1.5)
+
+            # Clamp to [1GB, ceiling]
+            result = max(ONE_GB, min(projected, ceiling))
+
+            logger.info(
+                "Recomputed max_bytes",
+                extra={
+                    "stream": name,
+                    "current_bytes": current_bytes,
+                    "rate_per_second": rate_per_second,
+                    "max_age_s": max_age_s,
+                    "projected": projected,
+                    "result": result,
+                    "ceiling": ceiling,
+                },
+            )
+
+            return result
+
+        except Exception as e:
+            logger.error(
+                "Failed to recompute max_bytes, using floor",
+                extra={"stream": name, "error": str(e)},
+            )
+            return ONE_GB
+
+    async def get_stream_stats(self, name: str) -> dict[str, Any]:
+        """Get current stream statistics for monitoring."""
+        try:
+            info = await self._js.stream_info(name)
+            return {
+                "stream": name,
+                "bytes": info.state.bytes,
+                "messages": info.state.messages,
+                "max_bytes": info.config.max_bytes,
+                "max_age_s": info.config.max_age,
+                "consumers": info.state.consumer_count,
+            }
+        except Exception as e:
+            logger.error(
+                "Failed to get stream stats",
+                extra={"stream": name, "error": str(e)},
+            )
+            return {"stream": name, "error": str(e)}

src/central/supervisor.py

@@ -13,16 +13,27 @@ from typing import Any
 import nats
 from nats.js import JetStreamContext
 
+from central.adapter import SourceAdapter
 from central.adapters.nws import NWSAdapter
 from central.cloudevents_wire import wrap_event
-from central.config import NWSAdapterConfig
 from central.config_models import AdapterConfig
 from central.config_source import ConfigSource, DbConfigSource
+from central.config_store import ConfigStore
 from central.bootstrap_config import get_settings
 from central.models import subject_for_event
+from central.stream_manager import StreamManager
 
 CURSOR_DB_PATH = Path("/var/lib/central/cursors.db")
 
+# Stream subject mappings
+STREAM_SUBJECTS = {
+    "CENTRAL_WX": ["central.wx.>"],
+    "CENTRAL_META": ["central.meta.>"],
+}
+
+# Recompute interval for stream max_bytes (1 hour)
+STREAM_RECOMPUTE_INTERVAL_S = 3600
+
 
 class JsonFormatter(logging.Formatter):
     """JSON log formatter for structured logging."""
@@ -66,7 +77,7 @@ class AdapterState:
     """Runtime state for a scheduled adapter."""
 
     name: str
-    adapter: NWSAdapter
+    adapter: SourceAdapter
     config: AdapterConfig
     task: asyncio.Task[None] | None = None
     last_completed_poll: datetime | None = None
@@ -84,14 +95,17 @@ class Supervisor:
     def __init__(
         self,
         config_source: ConfigSource,
+        config_store: ConfigStore,
         nats_url: str,
         cloudevents_config: Any = None,
     ) -> None:
         self._config_source = config_source
+        self._config_store = config_store
         self._nats_url = nats_url
         self._cloudevents_config = cloudevents_config
         self._nc: nats.NATS | None = None
         self._js: JetStreamContext | None = None
+        self._stream_manager: StreamManager | None = None
         self._adapter_states: dict[str, AdapterState] = {}
         self._tasks: list[asyncio.Task[None]] = []
         self._shutdown_event = asyncio.Event()
@@ -103,6 +117,7 @@ class Supervisor:
         """Connect to NATS."""
         self._nc = await nats.connect(self._nats_url)
         self._js = self._nc.jetstream()
+        self._stream_manager = StreamManager(self._js)
         logger.info("Connected to NATS", extra={"url": self._nats_url})
 
     async def disconnect(self) -> None:
@@ -112,6 +127,7 @@ class Supervisor:
             await self._nc.close()
             self._nc = None
             self._js = None
+            self._stream_manager = None
         logger.info("Disconnected from NATS")
 
     async def _publish_meta(self, subject: str, data: dict[str, Any]) -> None:
@@ -132,14 +148,12 @@ class Supervisor:
             headers={"Nats-Msg-Id": msg_id},
         )
 
-    def _adapter_config_to_nws_config(self, config: AdapterConfig) -> NWSAdapterConfig:
-        """Convert unified AdapterConfig to NWSAdapterConfig."""
-        return NWSAdapterConfig(
-            enabled=config.enabled,
-            cadence_s=config.cadence_s,
-            states=config.settings.get("states", []),
-            contact_email=config.settings.get("contact_email", ""),
-        )
+    def _create_adapter(self, config: AdapterConfig) -> SourceAdapter:
+        """Create an adapter instance based on config name."""
+        if config.name == "nws":
+            return NWSAdapter(config=config, cursor_db_path=CURSOR_DB_PATH)
+        else:
+            raise ValueError(f"Unknown adapter type: {config.name}")
 
     async def _run_adapter_loop(self, state: AdapterState) -> None:
         """Run an adapter poll loop with rate-limit aware scheduling."""
@@ -263,11 +277,7 @@ class Supervisor:
             existing_state.cancel_event.clear()
 
             # Reinitialize the adapter with new config
-            nws_config = self._adapter_config_to_nws_config(config)
-            existing_state.adapter = NWSAdapter(
-                config=nws_config,
-                cursor_db_path=CURSOR_DB_PATH,
-            )
+            existing_state.adapter = self._create_adapter(config)
             await existing_state.adapter.startup()
 
             # Start the loop task
@@ -300,34 +310,29 @@ class Supervisor:
             return
 
         # New adapter - create fresh state
-        if config.name == "nws":
-            nws_config = self._adapter_config_to_nws_config(config)
-            adapter = NWSAdapter(
-                config=nws_config,
-                cursor_db_path=CURSOR_DB_PATH,
-            )
-            await adapter.startup()
+        try:
+            adapter = self._create_adapter(config)
+        except ValueError as e:
+            logger.warning(str(e), extra={"adapter": config.name})
+            return
 
-            state = AdapterState(
-                name=config.name,
-                adapter=adapter,
-                config=config,
-            )
-            state.task = asyncio.create_task(self._run_adapter_loop(state))
-            self._adapter_states[config.name] = state
+        await adapter.startup()
 
-            logger.info(
-                "Adapter started",
-                extra={
-                    "adapter": config.name,
-                    "cadence_s": config.cadence_s,
-                },
-            )
-        else:
-            logger.warning(
-                "Unknown adapter type",
-                extra={"adapter": config.name},
-            )
+        state = AdapterState(
+            name=config.name,
+            adapter=adapter,
+            config=config,
+        )
+        state.task = asyncio.create_task(self._run_adapter_loop(state))
+        self._adapter_states[config.name] = state
+
+        logger.info(
+            "Adapter started",
+            extra={
+                "adapter": config.name,
+                "cadence_s": config.cadence_s,
+            },
+        )
 
     async def _stop_adapter(self, name: str) -> None:
         """Stop a running adapter but preserve state for potential restart.
@@ -423,10 +428,8 @@ class Supervisor:
         # Update config
         state.config = new_config
 
-        # Update adapter settings if needed (e.g., states list)
-        if name == "nws":
-            nws_config = self._adapter_config_to_nws_config(new_config)
-            state.adapter.states = set(s.upper() for s in nws_config.states)
+        # Apply config to adapter (generic - each adapter handles its own settings)
+        await state.adapter.apply_config(new_config)
 
         # Calculate next poll time for logging
         if state.last_completed_poll:
@@ -451,11 +454,139 @@ class Supervisor:
         # This ensures immediate event delivery to the sleeping loop.
         return state
 
+    async def _ensure_streams(self) -> None:
+        """Ensure all configured streams exist with correct settings."""
+        if not self._stream_manager:
+            return
+
+        streams = await self._config_store.list_streams()
+        for stream_config in streams:
+            subjects = STREAM_SUBJECTS.get(stream_config.name, [])
+            if not subjects:
+                logger.warning(
+                    "No subjects configured for stream",
+                    extra={"stream": stream_config.name},
+                )
+                continue
+
+            try:
+                await self._stream_manager.ensure_stream(
+                    stream_config.name,
+                    subjects,
+                    stream_config,
+                )
+            except Exception as e:
+                logger.error(
+                    "Failed to ensure stream",
+                    extra={"stream": stream_config.name, "error": str(e)},
+                )
+
+    async def _handle_stream_change(self, stream_name: str) -> None:
+        """Handle a stream configuration change."""
+        if not self._stream_manager:
+            return
+
+        stream_config = await self._config_store.get_stream(stream_name)
+        if stream_config is None:
+            logger.warning(
+                "Stream config not found",
+                extra={"stream": stream_name},
+            )
+            return
+
+        try:
+            # Apply retention settings
+            await self._stream_manager.apply_retention(stream_name, stream_config)
+
+            # Immediate recompute of max_bytes
+            new_max_bytes = await self._stream_manager.recompute_max_bytes(
+                stream_name, stream_config.max_age_s
+            )
+
+            # Update database (won't trigger NOTIFY due to column filter)
+            await self._config_store.update_stream_max_bytes(stream_name, new_max_bytes)
+
+            logger.info(
+                "Stream retention updated",
+                extra={
+                    "stream": stream_name,
+                    "max_age_s": stream_config.max_age_s,
+                    "new_max_bytes": new_max_bytes,
+                },
+            )
+        except Exception as e:
+            logger.error(
+                "Failed to handle stream change",
+                extra={"stream": stream_name, "error": str(e)},
+            )
+
+    async def _stream_retention_recompute_loop(self) -> None:
+        """Periodically recompute max_bytes for all streams."""
+        while not self._shutdown_event.is_set():
+            try:
+                await asyncio.wait_for(
+                    self._shutdown_event.wait(),
+                    timeout=STREAM_RECOMPUTE_INTERVAL_S,
+                )
+                # Shutdown requested
+                break
+            except asyncio.TimeoutError:
+                pass
+
+            # Recompute for all streams
+            if not self._stream_manager:
+                continue
+
+            streams = await self._config_store.list_streams()
+            for stream_config in streams:
+                if not stream_config.managed_max_bytes:
+                    continue
+
+                try:
+                    new_max_bytes = await self._stream_manager.recompute_max_bytes(
+                        stream_config.name, stream_config.max_age_s
+                    )
+
+                    # Only update if change > 10%
+                    change_ratio = abs(new_max_bytes - stream_config.max_bytes) / max(stream_config.max_bytes, 1)
+                    if change_ratio > 0.10:
+                        await self._config_store.update_stream_max_bytes(
+                            stream_config.name, new_max_bytes
+                        )
+                        await self._stream_manager.apply_retention(
+                            stream_config.name,
+                            await self._config_store.get_stream(stream_config.name),
+                        )
+                        logger.info(
+                            "Recomputed stream max_bytes",
+                            extra={
+                                "stream": stream_config.name,
+                                "old_max_bytes": stream_config.max_bytes,
+                                "new_max_bytes": new_max_bytes,
+                                "change_ratio": change_ratio,
+                            },
+                        )
+                except Exception as e:
+                    logger.error(
+                        "Failed to recompute stream max_bytes",
+                        extra={"stream": stream_config.name, "error": str(e)},
+                    )
+
     async def _on_config_change(self, table: str, key: str) -> None:
         """Handle a configuration change notification.
 
         Called when NOTIFY fires for config changes.
         """
+        # Handle stream changes
+        if table == "streams":
+            stream_name = key
+            logger.info(
+                "Stream config change received",
+                extra={"stream": stream_name},
+            )
+            await self._handle_stream_change(stream_name)
+            return
+
         if table != "adapters":
             return
 
@@ -534,6 +665,9 @@ class Supervisor:
         """Start the supervisor."""
         await self.connect()
 
+        # Ensure streams exist with correct configuration
+        await self._ensure_streams()
+
         # Load and start enabled adapters
         enabled_adapters = await self._config_source.list_enabled_adapters()
         for config in enabled_adapters:
@@ -547,6 +681,9 @@ class Supervisor:
         # Start heartbeat
         self._tasks.append(asyncio.create_task(self._heartbeat_loop()))
 
+        # Start stream retention recompute loop
+        self._tasks.append(asyncio.create_task(self._stream_retention_recompute_loop()))
+
         logger.info(
             "Supervisor started",
             extra={"adapters": list(self._adapter_states.keys())},
@@ -594,11 +731,13 @@ async def async_main() -> None:
         extra={"config_source": "db"},
     )
 
-    # Create database config source
+    # Create database config source and store
     config_source = await DbConfigSource.create(settings.db_dsn)
+    config_store = await ConfigStore.create(settings.db_dsn)
 
     supervisor = Supervisor(
         config_source=config_source,
+        config_store=config_store,
         nats_url=settings.nats_url,
         # CloudEvents uses protocol-level defaults from cloudevents_constants
         cloudevents_config=None,

uv.lock

@@ -45,15 +45,6 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/aa/ca/eadf6f9c8fa5e31d40993e3db153fb5ed0b11008ad5d9de98a95045bed84/aiohttp-3.13.5-cp312-cp312-win_amd64.whl", hash = "sha256:110e448e02c729bcebb18c60b9214a87ba33bac4a9fa5e9a5f139938b56c6cb1", size = 460446, upload-time = "2026-03-31T21:58:10.945Z" },
 ]
 
-[[package]]
-name = "aiolimiter"
-version = "1.2.1"
-source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/f1/23/b52debf471f7a1e42e362d959a3982bdcb4fe13a5d46e63d28868807a79c/aiolimiter-1.2.1.tar.gz", hash = "sha256:e02a37ea1a855d9e832252a105420ad4d15011505512a1a1d814647451b5cca9", size = 7185, upload-time = "2024-12-08T15:31:51.496Z" }
-wheels = [
-    { url = "https://files.pythonhosted.org/packages/f3/ba/df6e8e1045aebc4778d19b8a3a9bc1808adb1619ba94ca354d9ba17d86c3/aiolimiter-1.2.1-py3-none-any.whl", hash = "sha256:d3f249e9059a20badcb56b61601a83556133655c11d1eb3dd3e04ff069e5f3c7", size = 6711, upload-time = "2024-12-08T15:31:49.874Z" },
-]
-
 [[package]]
 name = "aiosignal"
 version = "1.4.0"
@@ -130,11 +121,13 @@ version = "0.1.0"
 source = { editable = "." }
 dependencies = [
     { name = "aiohttp" },
-    { name = "aiolimiter" },
     { name = "asyncpg" },
     { name = "cloudevents" },
+    { name = "cryptography" },
     { name = "nats-py" },
     { name = "pydantic" },
+    { name = "pydantic-settings" },
+    { name = "shapely" },
     { name = "tenacity" },
 ]
 
@@ -149,11 +142,13 @@ dev = [
 [package.metadata]
 requires-dist = [
     { name = "aiohttp", specifier = ">=3.13.5" },
-    { name = "aiolimiter", specifier = ">=1.2.1" },
     { name = "asyncpg", specifier = ">=0.31.0" },
     { name = "cloudevents", specifier = ">=2.0.0" },
+    { name = "cryptography", specifier = ">=44.0.0" },
     { name = "nats-py", specifier = ">=2.14.0" },
     { name = "pydantic", specifier = ">=2,<3" },
+    { name = "pydantic-settings", specifier = ">=2.7.0" },
+    { name = "shapely", specifier = ">=2.0" },
     { name = "tenacity", specifier = ">=9.1.4" },
 ]
 
@@ -165,6 +160,29 @@ dev = [
     { name = "ruff", specifier = ">=0.15.13" },
 ]
 
+[[package]]
+name = "cffi"
+version = "2.0.0"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "pycparser", marker = "implementation_name != 'PyPy'" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/eb/56/b1ba7935a17738ae8453301356628e8147c79dbb825bcbc73dc7401f9846/cffi-2.0.0.tar.gz", hash = "sha256:44d1b5909021139fe36001ae048dbdde8214afa20200eda0f64c068cac5d5529", size = 523588, upload-time = "2025-09-08T23:24:04.541Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/ea/47/4f61023ea636104d4f16ab488e268b93008c3d0bb76893b1b31db1f96802/cffi-2.0.0-cp312-cp312-macosx_10_13_x86_64.whl", hash = "sha256:6d02d6655b0e54f54c4ef0b94eb6be0607b70853c45ce98bd278dc7de718be5d", size = 185271, upload-time = "2025-09-08T23:22:44.795Z" },
+    { url = "https://files.pythonhosted.org/packages/df/a2/781b623f57358e360d62cdd7a8c681f074a71d445418a776eef0aadb4ab4/cffi-2.0.0-cp312-cp312-macosx_11_0_arm64.whl", hash = "sha256:8eca2a813c1cb7ad4fb74d368c2ffbbb4789d377ee5bb8df98373c2cc0dee76c", size = 181048, upload-time = "2025-09-08T23:22:45.938Z" },
+    { url = "https://files.pythonhosted.org/packages/ff/df/a4f0fbd47331ceeba3d37c2e51e9dfc9722498becbeec2bd8bc856c9538a/cffi-2.0.0-cp312-cp312-manylinux1_i686.manylinux2014_i686.manylinux_2_17_i686.manylinux_2_5_i686.whl", hash = "sha256:21d1152871b019407d8ac3985f6775c079416c282e431a4da6afe7aefd2bccbe", size = 212529, upload-time = "2025-09-08T23:22:47.349Z" },
+    { url = "https://files.pythonhosted.org/packages/d5/72/12b5f8d3865bf0f87cf1404d8c374e7487dcf097a1c91c436e72e6badd83/cffi-2.0.0-cp312-cp312-manylinux2014_aarch64.manylinux_2_17_aarch64.whl", hash = "sha256:b21e08af67b8a103c71a250401c78d5e0893beff75e28c53c98f4de42f774062", size = 220097, upload-time = "2025-09-08T23:22:48.677Z" },
+    { url = "https://files.pythonhosted.org/packages/c2/95/7a135d52a50dfa7c882ab0ac17e8dc11cec9d55d2c18dda414c051c5e69e/cffi-2.0.0-cp312-cp312-manylinux2014_ppc64le.manylinux_2_17_ppc64le.whl", hash = "sha256:1e3a615586f05fc4065a8b22b8152f0c1b00cdbc60596d187c2a74f9e3036e4e", size = 207983, upload-time = "2025-09-08T23:22:50.06Z" },
+    { url = "https://files.pythonhosted.org/packages/3a/c8/15cb9ada8895957ea171c62dc78ff3e99159ee7adb13c0123c001a2546c1/cffi-2.0.0-cp312-cp312-manylinux2014_s390x.manylinux_2_17_s390x.whl", hash = "sha256:81afed14892743bbe14dacb9e36d9e0e504cd204e0b165062c488942b9718037", size = 206519, upload-time = "2025-09-08T23:22:51.364Z" },
+    { url = "https://files.pythonhosted.org/packages/78/2d/7fa73dfa841b5ac06c7b8855cfc18622132e365f5b81d02230333ff26e9e/cffi-2.0.0-cp312-cp312-manylinux2014_x86_64.manylinux_2_17_x86_64.whl", hash = "sha256:3e17ed538242334bf70832644a32a7aae3d83b57567f9fd60a26257e992b79ba", size = 219572, upload-time = "2025-09-08T23:22:52.902Z" },
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