AWS via Haskell Part 3 (SQS)

aws-via-haskell.cabal

name:                                       aws-via-haskell
version:                                    0.1.0.0
homepage:                                   https://github.com/rcook/aws-via-haskell#readme
license:                                    MIT
license-file:                               LICENSE
author:                                     Richard Cook
maintainer:                                 [email protected]
copyright:                                  2017 Richard Cook
category:                                   Command Line
build-type:                                 Simple
cabal-version:                              >= 1.10
extra-source-files:                         README.md

source-repository head
  type:                                     git
  location:                                 https://github.com/rcook/aws-via-haskell.git

library
  default-language:                         Haskell2010
  if os(darwin)
    cpp-options:                            -DOS_MACOS
  if os(linux)
    cpp-options:                            -DOS_LINUX
  if os(windows)
    cpp-options:                            -DOS_WINDOWS
  hs-source-dirs:                           lib
  ghc-options:                              -W -Wall -fwarn-incomplete-patterns -fwarn-unused-imports
  build-depends:                            amazonka
                                          , base >= 4.7 && < 5
                                          , bytestring
                                          , lens
                                          , resourcet
                                          , text
  exposed-modules:                          AWSViaHaskell
                                          , AWSViaHaskell.AWSInfo
                                          , AWSViaHaskell.Util

executable dynamodb-app
  default-language:                         Haskell2010
  if os(darwin)
    cpp-options:                            -DOS_MACOS
  if os(linux)
    cpp-options:                            -DOS_LINUX
  if os(windows)
    cpp-options:                            -DOS_WINDOWS
  hs-source-dirs:                           dynamodb
  main-is:                                  Main.hs
  ghc-options:                              -threaded -rtsopts -with-rtsopts=-N -W -Wall -fwarn-incomplete-patterns -fwarn-unused-imports
  build-depends:                            amazonka
                                          , amazonka-dynamodb
                                          , aws-via-haskell
                                          , base >= 4.7 && < 5
                                          , lens
                                          , text
                                          , unordered-containers

executable s3-app
  default-language:                         Haskell2010
  if os(darwin)
    cpp-options:                            -DOS_MACOS
  if os(linux)
    cpp-options:                            -DOS_LINUX
  if os(windows)
    cpp-options:                            -DOS_WINDOWS
  hs-source-dirs:                           s3
  main-is:                                  Main.hs
  ghc-options:                              -threaded -rtsopts -with-rtsopts=-N -W -Wall -fwarn-incomplete-patterns -fwarn-unused-imports
  build-depends:                            amazonka
                                          , amazonka-s3
                                          , aws-via-haskell
                                          , base >= 4.7 && < 5
                                          , bytestring
                                          , conduit-extra
                                          , lens
                                          , resourcet
                                          , text

executable sqs-app
  default-language:                         Haskell2010
  if os(darwin)
    cpp-options:                            -DOS_MACOS
  if os(linux)
    cpp-options:                            -DOS_LINUX
  if os(windows)
    cpp-options:                            -DOS_WINDOWS
  hs-source-dirs:                           sqs
  main-is:                                  Main.hs
  ghc-options:                              -threaded -rtsopts -with-rtsopts=-N -W -Wall -fwarn-incomplete-patterns -fwarn-unused-imports
  build-depends:                            amazonka-sqs
                                          , aws-via-haskell
                                          , base >= 4.7 && < 5

LICENSE

The MIT License (MIT)

Copyright (c) 2017 Richard Cook

Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Main.hs

{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE RecordWildCards #-}

module Main (main) where

import           AWSViaHaskell
                    ( AWSInfo
                    , LoggingState(..)
                    , ServiceEndpoint(..)
                    , getAWSInfo
                    , withAWS
                    )
import           Control.Exception.Lens (handling)
import           Control.Lens ((^.))
import           Control.Monad (forM_, void)
import           Data.Monoid ((<>))
import           Data.Text (Text)
import qualified Data.Text.IO as Text
import           Network.AWS (send)
import           Network.AWS.SQS
                    ( _QueueDoesNotExist
                    , createQueue
                    , getQueueURL
                    , gqursQueueURL
                    , listQueues
                    , lqrsQueueURLs
                    , mBody
                    , receiveMessage
                    , rmrsMessages
                    , sendMessage
                    , sqs
                    )

newtype QueueName = QueueName Text deriving Show

newtype QueueURL = QueueURL Text deriving Show

doListQueues :: AWSInfo -> IO [Text]
doListQueues = withAWS $ do
    result <- send $ listQueues
    return $ result ^. lqrsQueueURLs

doCreateQueue :: QueueName -> AWSInfo -> IO ()
doCreateQueue (QueueName queueName) = withAWS (void $ send $ createQueue queueName)

doGetQueueURL :: QueueName -> AWSInfo -> IO (Maybe QueueURL)
doGetQueueURL (QueueName queueName) = withAWS $ do
    handling _QueueDoesNotExist (const (pure Nothing)) $ do
        result <- send $ getQueueURL queueName
        return $ Just (QueueURL $ result ^. gqursQueueURL)

doSendMessage :: QueueURL -> Text -> AWSInfo -> IO ()
doSendMessage (QueueURL s) m = withAWS $ do
    void $ send $ sendMessage s m

doReceiveMessage :: QueueURL -> AWSInfo -> IO (Maybe Text)
doReceiveMessage (QueueURL s) = withAWS $ do
    result <- send $ receiveMessage s
    case result ^. rmrsMessages of
        m : [] -> return $ m ^. mBody
        _ -> return Nothing

main :: IO ()
main = do
    let queueName = QueueName "my-queue"

    awsInfo <- getAWSInfo LoggingDisabled (Local "localhost" 4576) sqs

    putStrLn "CreateQueue"
    doCreateQueue queueName awsInfo

    putStrLn "ListQueues"
    queueURLs <- doListQueues awsInfo
    forM_ queueURLs $ \queueURL ->
        Text.putStrLn $ "  " <> queueURL

    putStrLn "GetQueueURL"
    mbQueueURL <- doGetQueueURL queueName awsInfo
    case mbQueueURL of
        Nothing -> Text.putStrLn "  (not found)"
        Just queueURL -> do
            putStrLn $ "  " <> show queueURL

            putStrLn "SendMessage"
            doSendMessage queueURL "a message" awsInfo

            putStrLn "ReceiveMessage"
            m <- doReceiveMessage queueURL awsInfo
            putStrLn $ "  " <> show m