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Update app/App.hs #18

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16 changes: 7 additions & 9 deletions app/App.hs
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Original file line number Diff line number Diff line change
Expand Up @@ -146,17 +146,15 @@ maybeWriteFile _ _ = return ()

validateArgs :: Args -> IO ()
validateArgs Args{..} = do
let p !? what | p = Nothing
| otherwise = Just $ "Argument to " ++ what
infix 1 !?
problems = catMaybes [
concurrency > 0 !? "--concurrency must be positive"
, num_requests > 0 !? "--num-requests must be positive"
, requests_per_second >= 0 !? "--requests-per-second cannot be negative"
, timeout >= 0 !? "--timeout cannot be negative"
]
forM_ problems $ hPutStrLn stderr . ("Error: " ++)
unless (null problems) $ exitWith (ExitFailure 1)
where
problems = concat
[ [ "--concurrency must be positive" | concurrency <= 0 ]
, [ "--num-requests must be positive" | num_requests <= 0 ]
, [ "--requests-per-second cannot be negative" | requests_per_second < 0 ]
, [ "--timeout cannot be negative" | timeout < 0 ]
]

createRequest :: Args -> IO (E.Request (ResourceT IO))
createRequest Args{..} = do
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