PTV-Street/README.md

PTV Street Ressource Task

1. Create a service in dotnet. It has a REST API that serves a resource 'street'. A street can be created and deleted. It has a name, a geometry and a capacity (= how many vehicles can use it within a minute).
2. The street data is stored in a Postgres database, and we use EF core to save data there.
3. Implement an endpoint to add a given single point to the geometry of an existing street on either the beginning or the end, whatever fits better.
   • Bonus: Note that this endpoint has a strange behavior from a user perspective when there are race conditions. Please take care of that in the implementation.
4. Add a hidden feature flag to decide whether the operation (in bullet point 3.) is done on the database level, using PostGis, or withing the backend code, algorithmically.
5. Add a Docker file and a Kubernetes manifest, so we can deploy it as a service with 3 replicas.
6. Also create a docker compose file, so we can locally check everything.

Authentication and API documentation is not part of this task.

API

The following functions are supported:

• POST /api/streets/: Create new Street

  Creates a new street when given the following format:

  {
    "name": String,
    "capacity": int,
    "geometry": [
      {
        "x": int,
        "y": int
      }
    ]
  }
  

• DELETE /api/streets/<streetname>: Delete a street

  Deletes the street with the given name.

• GET /api/streets/<streetname>: Outputs a street

  Returns the street with the given name in the following format:

  {
    "name": String,
    "capacity": int,
    "geometry": [
      {
        "x": int,
        "y": int
      }
    ]
  }
  

• PATCH /api/streets/<streetname>: Add a given point to a street

  Adds a point to the end of the given street. Optionally, one can specify the method used for this operation. This can be one of either "Backend", "Database" or with "PostGIS". If a different value is specified, an Error is returned.

  {
    "point": {
      "x": int,
      "y": int
    },
    "method": "Backend" | "Database" | "PostGIS" // Optional, default is "Backend"
  }