refactor moving findProc into ApiRequest to allow parsing parameters differently by proc

This commit is contained in:
Wolfgang Walther
2020-10-26 17:49:51 -05:00
committed by Steve Chavez
parent 06e85357c7
commit 18cc214c04
5 changed files with 91 additions and 81 deletions
+27 -38
View File
@@ -50,7 +50,6 @@ import PostgREST.Error (PgError (..), SimpleError (..),
errorResponseFor, singularityError)
import PostgREST.Middleware
import PostgREST.OpenAPI
import PostgREST.Parsers (pRequestColumns)
import PostgREST.QueryBuilder (limitedQuery, mutateRequestToQuery,
readRequestToCountQuery,
readRequestToQuery,
@@ -76,12 +75,10 @@ postgrest logLev refConf refDbStructure pool getTime connWorker =
Nothing -> respond . errorResponseFor $ ConnectionLostError
Just dbStructure -> do
response <- do
let apiReq = userApiRequest (configSchemas conf) (configRootSpec conf) req body
-- Need to parse ?columns early because findProc needs it to solve overloaded functions.
apiReqCols = (,) <$> apiReq <*> (pRequestColumns . iColumns =<< apiReq)
case apiReqCols of
let apiReq = userApiRequest (configSchemas conf) (configRootSpec conf) dbStructure req body
case apiReq of
Left err -> return . errorResponseFor $ err
Right (apiRequest, maybeCols) -> do
Right apiRequest -> do
-- The jwt must be checked before touching the db.
attempt <- attemptJwtClaims (configJWKS conf) (configJwtAudience conf) (toS $ iJWT apiRequest) time (rightToMaybe $ configRoleClaimKey conf)
case jwtClaims attempt of
@@ -89,38 +86,27 @@ postgrest logLev refConf refDbStructure pool getTime connWorker =
Right claims -> do
let
authed = containsRole claims
cols = case (iPayload apiRequest, maybeCols) of
(Just ProcessedJSON{pjKeys}, _) -> pjKeys
(Just RawJSON{}, Just cls) -> cls
_ -> S.empty
proc = case iTarget apiRequest of
TargetProc qi _ -> findProc qi cols (iPreferParameters apiRequest == Just SingleObject) $ dbProcs dbStructure
_ -> Nothing
handleReq = runPgLocals conf claims (app dbStructure proc cols conf) apiRequest
txMode = transactionMode proc (iAction apiRequest)
dbResp <- P.use pool $ HT.transaction HT.ReadCommitted txMode handleReq
handleReq = runPgLocals conf claims (app dbStructure conf) apiRequest
dbResp <- P.use pool $ HT.transaction HT.ReadCommitted (txMode apiRequest) handleReq
return $ either (errorResponseFor . PgError authed) identity dbResp
-- Launch the connWorker when the connection is down. The postgrest function can respond successfully(with a stale schema cache) before the connWorker is done.
when (responseStatus response == status503) connWorker
respond response
transactionMode :: Maybe ProcDescription -> Action -> HT.Mode
transactionMode proc action =
case action of
ActionRead _ -> HT.Read
ActionInfo -> HT.Read
ActionInspect _ -> HT.Read
ActionInvoke InvGet -> HT.Read
ActionInvoke InvHead -> HT.Read
ActionInvoke InvPost ->
let v = maybe Volatile pdVolatility proc in
if v == Stable || v == Immutable
then HT.Read
else HT.Write
txMode :: ApiRequest -> HT.Mode
txMode apiRequest =
case (iAction apiRequest, iTarget apiRequest) of
(ActionRead _ , _) -> HT.Read
(ActionInfo , _) -> HT.Read
(ActionInspect _ , _) -> HT.Read
(ActionInvoke InvGet , _) -> HT.Read
(ActionInvoke InvHead, _) -> HT.Read
(ActionInvoke InvPost, TargetProc ProcDescription{pdVolatility=Stable} _) -> HT.Read
(ActionInvoke InvPost, TargetProc ProcDescription{pdVolatility=Immutable} _) -> HT.Read
_ -> HT.Write
app :: DbStructure -> Maybe ProcDescription -> S.Set FieldName -> AppConfig -> ApiRequest -> H.Transaction Response
app dbStructure proc cols conf apiRequest =
app :: DbStructure -> AppConfig -> ApiRequest -> H.Transaction Response
app dbStructure conf apiRequest =
let rawContentTypes = (decodeContentType <$> configRawMediaTypes conf) `L.union` [ CTOctetStream, CTTextPlain ] in
case responseContentTypeOrError (iAccepts apiRequest) rawContentTypes (iAction apiRequest) (iTarget apiRequest) of
Left errorResponse -> return errorResponse
@@ -210,7 +196,7 @@ app dbStructure proc cols conf apiRequest =
Left err -> return $ errorResponseFor err
Right (ghdrs, gstatus) -> do
let
updateIsNoOp = S.null cols
updateIsNoOp = S.null (iColumns apiRequest)
defStatus | queryTotal == 0 && not updateIsNoOp = status404
| iPreferRepresentation apiRequest == Full = status200
| otherwise = status204
@@ -294,14 +280,14 @@ app dbStructure proc cols conf apiRequest =
allOrigins = ("Access-Control-Allow-Origin", "*") :: Header in
return $ responseLBS status200 [allOrigins, allowH] mempty
(ActionInvoke invMethod, TargetProc qi@(QualifiedIdentifier tSchema pName) _, Just pJson) ->
let tName = fromMaybe pName $ procTableName =<< proc in
case readSqlParts tSchema tName of
(ActionInvoke invMethod, TargetProc proc@ProcDescription{pdSchema, pdName} _, Just pJson) ->
let tName = fromMaybe pdName $ procTableName proc in
case readSqlParts pdSchema tName of
Left errorResponse -> return errorResponse
Right (q, cq, bField, returning) -> do
let
preferParams = iPreferParameters apiRequest
pq = requestToCallProcQuery qi (specifiedProcArgs cols proc) returnsScalar preferParams returning
pq = requestToCallProcQuery (QualifiedIdentifier pdSchema pdName) (specifiedProcArgs (iColumns apiRequest) proc) returnsScalar preferParams returning
stm = callProcStatement returnsScalar pq q cq shouldCount (contentType == CTSingularJSON)
(contentType == CTTextCSV) (contentType `elem` rawContentTypes) (preferParams == Just MultipleObjects)
bField pgVer
@@ -351,7 +337,10 @@ app dbStructure proc cols conf apiRequest =
plannedCount = iPreferCount apiRequest == Just PlannedCount
shouldCount = exactCount || estimatedCount
topLevelRange = iTopLevelRange apiRequest
returnsScalar = maybe False procReturnsScalar proc
returnsScalar =
case iTarget apiRequest of
TargetProc proc _ -> procReturnsScalar proc
_ -> False
pgVer = pgVersion dbStructure
profileH = contentProfileH <$> iProfile apiRequest
@@ -370,7 +359,7 @@ app dbStructure proc cols conf apiRequest =
mutateSqlParts s t =
let
readReq = readRequest s t maxRows (dbRelations dbStructure) apiRequest
mutReq = mutateRequest s t apiRequest cols (tablePKCols dbStructure s t) =<< readReq
mutReq = mutateRequest s t apiRequest (tablePKCols dbStructure s t) =<< readReq
in
(,) <$>
(readRequestToQuery <$> readReq) <*>