mirror of
https://github.com/azaion/satellite-provider.git
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Oleksandr Bezdieniezhnykh
b0fffa6d42
Phase A baseline outputs from /autodev (Steps 1-5): - Problem & solution docs (_docs/00_problem, _docs/01_solution) - Codebase documentation (_docs/02_document) incl. architecture, module-layout, glossary, system-flows, baseline compliance scan - Test specs (blackbox, performance, resilience, security, resource, traceability matrix) - Test task decomposition (_docs/02_tasks/todo): AZ-285..AZ-290 - Testability refactor (_docs/04_refactoring/01-testability-refactoring): - TC-01 Move DownloadedTileInfoV2 + new ExistingTileInfo to Common.DTO - TC-02 Replace dead ISatelliteDownloader API with real signatures - TC-03 GoogleMapsDownloaderV2 implements ISatelliteDownloader - TC-04 TileService depends on ISatelliteDownloader (mockable) - TC-05 DI + endpoints use ISatelliteDownloader - Test runner scripts (scripts/run-tests.sh, run-performance-tests.sh) - Autodev state pointer (_docs/_autodev_state.md) Prepares the codebase for AZ-285..AZ-290 unit/integration test work. Co-authored-by: Cursor <cursoragent@cursor.com>
92 lines
4.6 KiB
Markdown
92 lines
4.6 KiB
Markdown
# Module: Services/RouteService + RouteProcessingService
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## Purpose
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Route management and asynchronous map generation. `RouteService` handles route creation with intermediate point interpolation and geofencing. `RouteProcessingService` is a background service that polls for routes needing map generation and produces stitched images, CSVs, summaries, and ZIP archives.
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## Public Interface
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### RouteService (implements IRouteService)
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- `CreateRouteAsync(CreateRouteRequest) → Task<RouteResponse>`: validates input, computes intermediate points, persists route + points, creates geofence regions if specified
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- `GetRouteAsync(Guid id) → Task<RouteResponse?>`: retrieves route with all points
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### RouteProcessingService (BackgroundService)
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- `ExecuteAsync(CancellationToken)`: polls every 5 seconds for routes with `request_maps = true AND maps_ready = false`, then processes each sequentially
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## Internal Logic
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### RouteService.CreateRouteAsync
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1. **Validation**: minimum 2 points, region size 100–10000m, name required
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2. **Point interpolation**: for each segment between consecutive input points:
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- First point typed as "start", last as "end", middle as "action"
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- Calls `GeoUtils.CalculateIntermediatePoints(start, end, 200m)` to generate intermediate points
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- Each intermediate point gets `PointType = "intermediate"`
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- Distance from previous point is computed via `GeoUtils.CalculateDistance`
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3. **Persistence**: inserts `RouteEntity` + bulk inserts `RoutePointEntity` via repository
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4. **Geofencing** (if `Geofences.Polygons` provided):
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- Validates each polygon: non-null corners, non-zero coordinates, valid lat/lon ranges, NW lat > SE lat
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- Calls `CreateGeofenceRegionGrid` to divide the polygon bounding box into a grid of region centers
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- For each grid point, calls `RegionService.RequestRegionAsync` and links to route as geofence region
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5. Returns `RouteResponse` with all computed points
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### CreateGeofenceRegionGrid
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Divides a bounding box (NW → SE) into a regular grid where each cell is `regionSizeMeters` wide. Uses lat/lon step sizes derived from physical distance calculations. Returns a list of center points.
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### RouteProcessingService.ProcessRouteSequentiallyAsync
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1. Checks route needs processing (`RequestMaps && !MapsReady`)
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2. Loads route points and linked region IDs (both regular and geofence)
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3. If no regions linked yet: creates region requests for each route point
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4. Checks completion status of all linked regions
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5. When enough regions complete: generates consolidated outputs
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6. Retries failed regions by creating new region requests
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### GenerateRouteMapsAsync
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1. Collects all tile data from completed region CSVs, deduplicating by coordinates
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2. Generates consolidated route CSV
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3. If `RequestMaps`: stitches all tiles into a single image with:
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- Geofence polygon borders (yellow rectangles)
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- Route point markers (red crosses, 50px arms, 10px thickness)
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4. If `CreateTilesZip`: creates ZIP archive of all tile files with directory structure preserved
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5. Generates route summary text file
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6. Updates route record (`MapsReady = true`, file paths)
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7. Cleans up individual region CSV/summary/stitched files
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### Tile Stitching (route-level)
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- Extracts tile X/Y from filenames (`tile_{z}_{x}_{y}_{ts}.jpg`)
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- Creates grid-sized image, places tiles, draws geofence borders and route points
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- Background color: black (for missing tiles)
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### TileInfo (helper class)
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Simple data holder: `Latitude`, `Longitude`, `FilePath`.
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## Dependencies
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- `IRouteRepository`, `IRegionRepository`, `IRegionService`
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- `SatelliteProvider.Common.DTO` — GeoPoint, RoutePointDto, CreateRouteRequest, RouteResponse, GeofencePolygon
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- `SatelliteProvider.Common.Utils.GeoUtils`
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- `SatelliteProvider.DataAccess.Models` — RouteEntity, RoutePointEntity, RegionEntity
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- `SixLabors.ImageSharp` — tile stitching
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- `System.IO.Compression` — ZIP creation
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- `IServiceProvider` — creates scoped `IRegionService` instances
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## Consumers
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- `Program.cs` API endpoints — `CreateRouteAsync`, `GetRouteAsync`
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## Data Models
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- Input: `CreateRouteRequest`, `RoutePoint`, `GeofencePolygon`
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- Output: `RouteResponse`, `RoutePointDto`, CSV/summary/stitched/zip files
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- Persistence: `RouteEntity`, `RoutePointEntity`, `route_regions` junction
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## Configuration
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- `StorageConfig.ReadyDirectory` — output directory
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- `StorageConfig.TilesDirectory` — used for ZIP relative paths
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## External Integrations
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- PostgreSQL (via repositories)
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- File system (CSV, summary, stitched image, ZIP in `./ready/`)
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- Region processing pipeline (for tile downloading)
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## Security
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None.
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## Tests
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Integration tests in `BasicRouteTests.cs`, `ComplexRouteTests.cs`, `ExtendedRouteTests.cs`.
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