Use carpool events for metrics

Jenkinsfile

@@ -9,7 +9,7 @@ pipeline {
         IMAGE_NAME = 'amarillo'
         AMARILLO_DISTRIBUTION = '0.2'
         TAG = "${AMARILLO_DISTRIBUTION}.${BUILD_NUMBER}"
-        PLUGINS = 'amarillo-metrics amarillo-enhancer amarillo-grfs-exporter'
+        PLUGINS = 'amarillo-metrics amarillo-enhancer amarillo-grfs-export'
         DEPLOY_WEBHOOK_URL = 'http://amarillo.mfdz.de:8888/mitanand'
         DEPLOY_SECRET = credentials('AMARILLO-JENKINS-DEPLOY-SECRET')
     }

amarillo/models/User.py

@@ -1,5 +1,6 @@
-from typing import Annotated, Optional, List
+from typing import Optional
 from pydantic import ConfigDict, BaseModel, Field
+
 class User(BaseModel):
     #TODO: add attributes admin, permissions, fullname, email
 
@@ -21,11 +22,6 @@ class User(BaseModel):
         min_length=8,
         max_length=256,
         examples=["$2b$12$EixZaYVK1fsbw1ZfbX3OXePaWxn96p36WQoeG6Lruj3vjPGga31lW"])
-    permissions: Optional[List[Annotated[str, Field(pattern=r'^[a-z0-9-]+(:[a-z]+)?$')]]] = Field([],
-        description="The permissions of this user, a list of strings in the format <agency:operation> or <operation>",
-        max_length=256,
-        # pattern=r'^[a-zA-Z0-9]+(:[a-zA-Z]+)?$', #TODO
-        examples=["ride2go:read", "all:read", "admin", "geojson"])
     model_config = ConfigDict(json_schema_extra={
         "title": "Agency Configuration",
         "description": "Configuration for an agency.",

amarillo/routers/agency.py

@@ -5,8 +5,8 @@ from typing import List
 from fastapi import APIRouter, HTTPException, status, Depends
 
 from amarillo.models.Carpool import Carpool, Agency
-from amarillo.models.User import User
-from amarillo.services.oauth2 import get_current_user, verify_permission
+from amarillo.routers.users import verify_permission_for_same_agency_or_admin
+from amarillo.services.oauth2 import get_current_agency
 # TODO should move this to service
 from amarillo.routers.carpool import store_carpool, delete_agency_carpools_older_than
 from amarillo.services.agencies import AgencyService
@@ -33,7 +33,7 @@ router = APIRouter(
                 status.HTTP_404_NOT_FOUND: {"description": "Agency not found"},
             },
             )
-async def get_agency(agency_id: str, requesting_user: User = Depends(get_current_user)) -> Agency:
+async def get_agency(agency_id: str, admin_api_key: str = Depends(get_current_agency)) -> Agency:
     agencies: AgencyService = container['agencies']
     agency = agencies.get_agency(agency_id)
     agency_exists = agency is not None
@@ -62,8 +62,8 @@ async def get_agency(agency_id: str, requesting_user: User = Depends(get_current
                  status.HTTP_500_INTERNAL_SERVER_ERROR: {
                      "description": "Import error"}
              })
-async def sync(agency_id: str, requesting_user: User = Depends(get_current_user)) -> List[Carpool]:
-    verify_permission(f"{agency_id}:sync")
+async def sync(agency_id: str, requesting_agency_id: str = Depends(get_current_agency)) -> List[Carpool]:
+    await verify_permission_for_same_agency_or_admin(agency_id, requesting_agency_id)
 
     if agency_id == "ride2go":
         import_function = import_ride2go

amarillo/routers/carpool.py

@@ -5,14 +5,14 @@ import os.path
 import re
 from glob import glob
 
-from fastapi import APIRouter, Body, HTTPException, status, Depends
+from fastapi import APIRouter, Body, HTTPException, status, Depends, BackgroundTasks
 from datetime import datetime
 
 from amarillo.models.Carpool import Carpool
-from amarillo.models.User import User
-from amarillo.services.oauth2 import get_current_user, verify_permission
+from amarillo.routers.users import verify_permission_for_same_agency_or_admin
+from amarillo.services.oauth2 import get_current_agency
 from amarillo.tests.sampledata import examples
-
+from amarillo.services.hooks import run_on_create, run_on_delete
 
 logger = logging.getLogger(__name__)
 
@@ -32,9 +32,11 @@ router = APIRouter(
                      "description": "Agency does not exist"},
                  
                 })
-async def post_carpool(carpool: Carpool = Body(..., examples=examples),
-                       requesting_user: User = Depends(get_current_user)) -> Carpool:
-    verify_permission(f"{carpool.agency}:write", requesting_user)
+async def post_carpool(background_tasks: BackgroundTasks, carpool: Carpool = Body(..., examples=examples),
+                       requesting_agency_id: str = Depends(get_current_agency)) -> Carpool:
+    await verify_permission_for_same_agency_or_admin(carpool.agency, requesting_agency_id)
+
+    background_tasks.add_task(run_on_create, carpool)
 
     logger.info(f"POST trip {carpool.agency}:{carpool.id}.")
     await assert_agency_exists(carpool.agency)
@@ -54,9 +56,7 @@ async def post_carpool(carpool: Carpool = Body(..., examples=examples),
                 status.HTTP_404_NOT_FOUND: {"description": "Carpool not found"},
             },
             )
-async def get_carpool(agency_id: str, carpool_id: str, requesting_user: User = Depends(get_current_user)) -> Carpool:
-    verify_permission(f"{agency_id}:read", requesting_user)
-
+async def get_carpool(agency_id: str, carpool_id: str, api_key: str = Depends(get_current_agency)) -> Carpool:
     logger.info(f"Get trip {agency_id}:{carpool_id}.")
     await assert_agency_exists(agency_id)
     await assert_carpool_exists(agency_id, carpool_id)
@@ -75,12 +75,14 @@ async def get_carpool(agency_id: str, carpool_id: str, requesting_user: User = D
                        "description": "Carpool or agency not found"},
                },
                )
-async def delete_carpool(agency_id: str, carpool_id: str, requesting_user: User = Depends(get_current_user)):
-    verify_permission(f"{agency_id}:write", requesting_user)
+async def delete_carpool(background_tasks: BackgroundTasks, agency_id: str, carpool_id: str, requesting_agency_id: str = Depends(get_current_agency)):
+    await verify_permission_for_same_agency_or_admin(agency_id, requesting_agency_id)
 
     logger.info(f"Delete trip {agency_id}:{carpool_id}.")
     await assert_agency_exists(agency_id)
     await assert_carpool_exists(agency_id, carpool_id)
+    cp = await load_carpool(agency_id, carpool_id)
+    background_tasks.add_task(run_on_delete, cp)
     
     return await _delete_carpool(agency_id, carpool_id)
 
@@ -93,12 +95,6 @@ async def _delete_carpool(agency_id: str, carpool_id: str):
     logger.info(f"Saved carpool {agency_id}:{carpool_id} in trash.")
     os.remove(f"data/carpool/{agency_id}/{carpool_id}.json")
     
-    try:
-        from amarillo.plugins.metrics import trips_deleted_counter
-        trips_deleted_counter.inc()
-    except ImportError:
-        pass
-    
 
 async def store_carpool(carpool: Carpool) -> Carpool:
     carpool_exists = os.path.exists(f"data/carpool/{carpool.agency}/{carpool.id}.json")
@@ -106,17 +102,6 @@ async def store_carpool(carpool: Carpool) -> Carpool:
     await set_lastUpdated_if_unset(carpool)
     await save_carpool(carpool)
 
-    try:
-        from amarillo.plugins.metrics import trips_created_counter, trips_updated_counter
-        if(carpool_exists):
-            # logger.info("Incrementing trips updated")
-            trips_updated_counter.inc()
-        else:
-            # logger.info("Incrementing trips created")
-            trips_created_counter.inc()
-    except ImportError:
-        pass
-
     return carpool
 
 async def set_lastUpdated_if_unset(carpool):
@@ -157,4 +142,6 @@ async def delete_agency_carpools_older_than(agency_id, timestamp):
         if os.path.getmtime(carpool_file_name) < timestamp:
             m = re.search(r'([a-zA-Z0-9_-]+)\.json$', carpool_file_name)
             # TODO log deletion
+            cp = await load_carpool(agency_id, m[1])
+            run_on_delete(cp)
             await _delete_carpool(agency_id, m[1])

amarillo/routers/users.py

@@ -5,7 +5,7 @@ from fastapi import APIRouter, HTTPException, status, Header, Depends
 
 from amarillo.models.User import User
 from amarillo.services.users import UserService
-from amarillo.services.oauth2 import get_current_user, verify_permission
+from amarillo.services.oauth2 import get_current_agency, verify_admin
 from amarillo.services.config import config
 from amarillo.utils.container import container
 
@@ -21,6 +21,22 @@ router = APIRouter(
 include_in_schema = config.env != 'PROD'
 
 
+# TODO Return code 403 Unauthoized (in response_status_codes as well...)
+async def verify_permission_for_same_agency_or_admin(agency_id_in_path_or_body, agency_id_from_api_key):
+    """Verifies that an agency is accessing something it owns or the user is admin
+
+    The agency_id is part of some paths, or when not in the path it is in the body, e.g. in PUT /carpool.
+
+    This function encapsulates the formula 'working with own stuff, or admin'.
+    """
+    is_permitted = agency_id_in_path_or_body == agency_id_from_api_key or agency_id_from_api_key == "admin"
+
+    if not is_permitted:
+        message = f"Working with {agency_id_in_path_or_body} resources is not permitted for {agency_id_from_api_key}."
+        logger.error(message)
+        raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail=message)
+
+
 @router.get("/",
             include_in_schema=include_in_schema,
             operation_id="getUserIdsWhichHaveAConfiguration",
@@ -28,7 +44,7 @@ include_in_schema = config.env != 'PROD'
             response_model=List[str],
             description="Returns the user_ids but not the details.",
             status_code=status.HTTP_200_OK)
-async def get_user_ids(requesting_user: User = Depends(get_current_user)) -> [str]:
+async def get_user_ids(admin_api_key: str = Depends(get_current_agency)) -> [str]:
     return container['users'].get_user_ids()
 
 
@@ -36,8 +52,7 @@ async def get_user_ids(requesting_user: User = Depends(get_current_user)) -> [st
              include_in_schema=include_in_schema,
              operation_id="postNewUserConf",
              summary="Post a new User")
-async def post_user_conf(user_conf: User, requesting_user: User = Depends(get_current_user)):
-    verify_permission("admin", requesting_user)
+async def post_user_conf(user_conf: User, admin_api_key: str = Depends(verify_admin)):
     user_service: UserService = container['users']
     user_service.add(user_conf)
 
@@ -49,13 +64,13 @@ async def post_user_conf(user_conf: User, requesting_user: User = Depends(get_cu
                summary="Delete configuration of a user. Returns true if the token for the user existed, "
                        "false if it didn't exist."
                )
-async def delete_user(user_id: str, requesting_user: User = Depends(get_current_user)):
-    user_may_delete_own = requesting_user.user_id == user_id
-    admin_may_delete_everything = "admin" in requesting_user.permissions 
-    is_permitted = user_may_delete_own or admin_may_delete_everything
+async def delete_user(user_id: str, requesting_user_id: str = Depends(get_current_agency)):
+    agency_may_delete_own = requesting_user_id == user_id
+    admin_may_delete_everything = requesting_user_id == "admin"
+    is_permitted = agency_may_delete_own or admin_may_delete_everything
 
     if not is_permitted:
-        message = f"User '{requesting_user.user_id} can not delete the configuration for {user_id}"
+        message = f"The API key for {requesting_user_id} can not delete the configuration for {user_id}"
         logger.error(message)
         raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail=message)
 

amarillo/services/carpools.py

@@ -37,11 +37,6 @@ class CarpoolService():
             if cp and self.is_outdated(cp):
                 logger.info("Purge outdated offer %s", key)
                 self.delete(cp.agency, cp.id)
-                try:
-                    from amarillo.plugins.metrics import trips_deleted_counter
-                    trips_deleted_counter.inc()
-                except ImportError:
-                    pass
 
     def get(self, agency_id: str, carpool_id: str):
         return self.carpools.get(f"{agency_id}:{carpool_id}")

amarillo/services/hooks.py

@@ -0,0 +1,27 @@
+from typing import List
+from amarillo.models.Carpool import Carpool
+
+class CarpoolEvents:
+    def on_create(cp : Carpool):
+        pass
+    def on_update(cp : Carpool):
+        pass
+    def on_delete(cp : Carpool):
+        pass
+
+carpool_event_listeners : List[CarpoolEvents] = []
+
+def register_carpool_event_listener(cpe : CarpoolEvents):
+    carpool_event_listeners.append(cpe)
+
+def run_on_create(cp: Carpool):
+    for cpe in carpool_event_listeners:
+        cpe.on_create(cp)
+
+def run_on_update(cp: Carpool):
+    for cpe in carpool_event_listeners:
+        cpe.on_update(cp)
+
+def run_on_delete(cp: Carpool):
+    for cpe in carpool_event_listeners:
+        cpe.on_delete(cp)

amarillo/services/oauth2.py

@@ -3,13 +3,11 @@
 from datetime import datetime, timedelta, timezone
 from typing import Annotated, Optional, Union
 import logging
-import logging.config
 
 from fastapi import Depends, HTTPException, Header, status, APIRouter
 from fastapi.security import OAuth2PasswordBearer, OAuth2PasswordRequestForm
 from jose import JWTError, jwt
 from pydantic import BaseModel
-from amarillo.models.User import User
 from amarillo.services.passwords import verify_password
 from amarillo.utils.container import container 
 from amarillo.services.agencies import AgencyService
@@ -20,7 +18,7 @@ from amarillo.services.secrets import secrets
 
 SECRET_KEY = secrets.secret_key
 ALGORITHM = "HS256"
-ACCESS_TOKEN_EXPIRE_MINUTES = 7*24*60
+ACCESS_TOKEN_EXPIRE_MINUTES = 30
 
 logging.config.fileConfig('logging.conf', disable_existing_loggers=False)
 logger = logging.getLogger("main")
@@ -32,22 +30,22 @@ class Token(BaseModel):
     token_type: str
 
 class TokenData(BaseModel):
-    user_id: Union[str, None] = None
+    agency_id: Union[str, None] = None
 
 oauth2_scheme = OAuth2PasswordBearer(tokenUrl="token", auto_error=False)
 async def verify_optional_api_key(X_API_Key: Optional[str] = Header(None)):
     if X_API_Key == None: return None
     return await verify_api_key(X_API_Key)
 
-def authenticate_user(user_id: str, password: str):
+def authenticate_agency(agency_id: str, password: str):
     user_service : UserService = container['users']
-    user_conf = user_service.user_id_to_user_conf.get(user_id, None)
+    user_conf = user_service.user_id_to_user_conf.get(agency_id, None)
     if not user_conf:
         return False
 
     if not verify_password(password, user_conf.password):
         return False
-    return user_id
+    return agency_id
 
 
 def create_access_token(data: dict, expires_delta: Union[timedelta, None] = None):
@@ -60,8 +58,7 @@ def create_access_token(data: dict, expires_delta: Union[timedelta, None] = None
     encoded_jwt = jwt.encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)
     return encoded_jwt
 
-
-async def get_current_user(token: str = Depends(oauth2_scheme), user_from_api_key: str = Depends(verify_optional_api_key)) -> User:
+async def get_current_agency(token: str = Depends(oauth2_scheme), agency_from_api_key: str = Depends(verify_optional_api_key)):
     if token:
         credentials_exception = HTTPException(
             status_code=status.HTTP_401_UNAUTHORIZED,
@@ -70,22 +67,19 @@ async def get_current_user(token: str = Depends(oauth2_scheme), user_from_api_ke
         )
         try:
             payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
-            user_id: str = payload.get("sub")
-            if user_id is None:
+            agency_id: str = payload.get("sub")
+            if agency_id is None:
                 raise credentials_exception
-            token_data = TokenData(user_id=user_id)
+            token_data = TokenData(agency_id=agency_id)
         except JWTError:
             raise credentials_exception
-        user_id = token_data.user_id
-        if user_id is None:
+        user = token_data.agency_id
+        if user is None:
             raise credentials_exception
-        
-        user_service : UserService = container['users']
-        return user_service.get_user(user_id)
-    elif user_from_api_key:
-        logger.info(f"API Key provided: {user_from_api_key}")
-        user_service : UserService = container['users']
-        return user_service.get_user(user_from_api_key)
+        return user
+    elif agency_from_api_key:
+        logger.info(f"API Key provided: {agency_from_api_key}")
+        return agency_from_api_key
     else:
         credentials_exception = HTTPException(
             status_code=status.HTTP_401_UNAUTHORIZED,
@@ -94,35 +88,15 @@ async def get_current_user(token: str = Depends(oauth2_scheme), user_from_api_ke
         )
         raise credentials_exception
 
-def verify_permission(permission: str, user: User):
 
-    def permissions_exception():
-        return HTTPException(
-            status_code=status.HTTP_401_UNAUTHORIZED,
-            detail=f"User '{user.user_id}' does not have the permission '{permission}'",
-            headers={"WWW-Authenticate": "Bearer"},
-        )
+async def verify_admin(agency: str = Depends(get_current_agency)):
+    #TODO: maybe separate error for when admin credentials are invalid vs valid but not admin?
+    if(agency != "admin"):
+        message="This operation requires admin privileges"
+        logger.error(message)
+        raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail=message)
 
-    #user is admin
-    if "admin" in user.permissions: return
-
-    #permission is an operation
-    if ":" not in permission:
-        if permission not in user.permissions:
-            raise permissions_exception()
-
-        return 
-
-    #permission is in agency:operation format
-    def permission_matches(permission, user_permission):
-        prescribed_agency, prescribed_operation = permission.split(":")
-        given_agency, given_operation = user_permission.split(":")
-
-        return (prescribed_agency == given_agency or given_agency == "all") and (prescribed_operation == given_operation or given_operation == "all")
-
-    if any(permission_matches(permission, p) for p in user.permissions if ":" in p): return
-
-    raise permissions_exception()
+    return "admin"
 
 
 # noinspection PyPep8Naming
@@ -136,7 +110,7 @@ async def verify_api_key(X_API_Key: str = Header(...)):
 async def login_for_access_token(
     form_data: Annotated[OAuth2PasswordRequestForm, Depends()]
 ) -> Token:
-    agency = authenticate_user(form_data.username, form_data.password)
+    agency = authenticate_agency(form_data.username, form_data.password)
     if not agency:
         raise HTTPException(
             status_code=status.HTTP_401_UNAUTHORIZED,
@@ -152,7 +126,7 @@ async def login_for_access_token(
 # TODO: eventually remove this
 @router.get("/users/me/", response_model=Agency)
 async def read_users_me(
-    current_agency: Annotated[Agency, Depends(get_current_user)]
+    current_agency: Annotated[Agency, Depends(get_current_agency)]
 ):
     agency_service : AgencyService = container['agencies']
     return  agency_service.get_agency(agency_id=current_agency) 
@@ -160,6 +134,6 @@ async def read_users_me(
 # TODO: eventually remove this
 @router.get("/users/me/items/")
 async def read_own_items(
-    current_agency: Annotated[str, Depends(get_current_user)]
+    current_agency: Annotated[str, Depends(get_current_agency)]
 ):
     return [{"item_id": "Foo", "owner": current_agency}]

amarillo/tests/test_permissions.py

@@ -1,37 +0,0 @@
-from fastapi import HTTPException
-import pytest
-from amarillo.services.oauth2 import verify_permission
-from amarillo.models.User import User
-
-test_user = User(user_id="test", password="testpassword", permissions=["all:read", "mfdz:write", "ride2go:all", "gtfs"])
-admin_user = User(user_id="admin", password="testpassword", permissions=["admin"])
-
-def test_operation():
-    verify_permission("gtfs", test_user)
-
-    with pytest.raises(HTTPException):
-        verify_permission("geojson", test_user)
-
-def test_agency_permission():
-    verify_permission("mvv:read", test_user)
-    verify_permission("mfdz:read", test_user)
-    verify_permission("mfdz:write", test_user)
-    verify_permission("ride2go:write", test_user)
-
-    with pytest.raises(HTTPException):
-        verify_permission("mvv:write", test_user)
-        verify_permission("mvv:all", test_user)
-
-
-def test_admin():
-    verify_permission("admin", admin_user)
-    verify_permission("gtfs", admin_user)
-    verify_permission("all:all", admin_user)
-    verify_permission("mvv:all", admin_user)
-    verify_permission("mfdz:read", admin_user)
-    verify_permission("mfdz:write", admin_user)
-    verify_permission("ride2go:write", admin_user)
-
-    with pytest.raises(HTTPException):
-        verify_permission("admin", test_user)
-        verify_permission("all:all", test_user)