yam-transaction (empty) → 0.3.0

raw patch · 7 files changed

+215/−0 lines, 7 filesdep +aesondep +basedep +conduitsetup-changed

Dependencies added: aeson, base, conduit, data-default, monad-logger, mtl, persistent, persistent-postgresql, persistent-sqlite, resourcet, string-conversions, text, time, transformers, unliftio-core, yam-logger

Files

LICENSE +30/−0
README.md +1/−0
Setup.hs +2/−0
src/Yam/Transaction.hs +103/−0
src/Yam/Transaction/Postgresql.hs +17/−0
src/Yam/Transaction/Sqlite.hs +8/−0
yam-transaction.cabal +54/−0

+ LICENSE view

@@ -0,0 +1,30 @@+Copyright Daniel YU (c) 2018++All rights reserved.++Redistribution and use in source and binary forms, with or without+modification, are permitted provided that the following conditions are met:++    * Redistributions of source code must retain the above copyright+      notice, this list of conditions and the following disclaimer.++    * Redistributions in binary form must reproduce the above+      copyright notice, this list of conditions and the following+      disclaimer in the documentation and/or other materials provided+      with the distribution.++    * Neither the name of Daniel YU nor the names of other+      contributors may be used to endorse or promote products derived+      from this software without specific prior written permission.++THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

+ README.md view

@@ -0,0 +1,1 @@+# yam-transaction

+ Setup.hs view

@@ -0,0 +1,2 @@+import           Distribution.Simple+main = defaultMain

+ src/Yam/Transaction.hs view

@@ -0,0 +1,103 @@+module Yam.Transaction(+    Transaction+  , DataSourceConfig(..)+  , DataSourceProvider(..)+  , dataSource+  , DataSource+  , runTrans+  , query+  , selectValue+  , selectNow+  , now+  ) where++import           Yam.Logger++import           Control.Monad.IO.Unlift    (MonadUnliftIO)+import           Control.Monad.Logger+import           Control.Monad.Trans.Class  (lift)+import           Control.Monad.Trans.Reader+import           Data.Acquire               (withAcquire)+import           Data.Aeson+import           Data.Aeson.Types+import           Data.Conduit+import qualified Data.Conduit.List          as CL+import           Data.Default+import           Data.Either                (rights)+import           Data.Maybe                 (fromJust)+import           Data.Monoid                ((<>))+import           Data.Text                  (Text, intercalate, unpack)+import           Data.Time                  (UTCTime)+import           Database.Persist.Sql++-- SqlPersistT ~ ReaderT SqlBackend+type Transaction m = SqlPersistT (ReaderT DataSource m)++data DataSourceConfig = DataSourceConfig+  { dstype :: Text+  , url    :: Text+  , user   :: Text+  , pass   :: Text+  , port   :: Int+  , thread :: Int+  } deriving Show++instance FromJSON DataSourceConfig where+  parseJSON (Object v) = DataSourceConfig+    <$> v .:? "type"      .!= "sqlite"+    <*> v .:? "url"       .!= ":memory:"+    <*> v .:? "username"  .!= "sa"+    <*> v .:? "password"  .!= ""+    <*> v .:? "port"      .!= 0+    <*> v .:? "pool-size" .!= 10+  parseJSON v = typeMismatch "DataSourceConfig" v++instance Default DataSourceConfig where+  def = fromJust $ decode "{}"++data DataSourceProvider = DataSourceProvider+  { datasource           :: Text+  , currentSQL           :: Text+  , createConnectionPool :: DataSourceConfig -> LoggingT IO ConnectionPool+  }++type DataSource = (DataSourceProvider, ConnectionPool)++dataSource :: LoggerConfig -> DataSourceConfig -> [DataSourceProvider] -> IO DataSource+dataSource lc dsc@DataSourceConfig{..} ps = case lookup dstype $ fmap (\p->(datasource p,p)) ps of+  Nothing -> error $ "DataSource Type " <> unpack dstype <> " Not Supported"+  Just v  -> (v,) <$> runLoggingT (createConnectionPool v dsc) (toMonadLogger lc)++runTrans :: MonadUnliftIO m => DataSource -> Transaction m a -> m a+runTrans ds trans = flip runReaderT ds $ do+  (_,pool) <- ask+  runSqlPool trans pool++class FromPersistValue a where+  parsePersistValue :: [PersistValue] -> a++instance PersistField a => FromPersistValue [a] where+  parsePersistValue = rights . map fromPersistValue++instance FromPersistValue Text where+  parsePersistValue = intercalate "," . rights . map fromPersistValueText++query :: FromPersistValue a => Text -> [PersistValue] -> Transaction IO [a]+query sql params = do res <- rawQueryRes sql params+                      withAcquire res (\a -> runConduit $ a .| CL.fold i [])+  where i b ps = parsePersistValue ps : b++selectNow :: Transaction IO UTCTime+selectNow = do+  (p,_) <- lift $ ask+  head <$> selectValue (currentSQL p)++selectValue :: (PersistField a) => Text -> Transaction IO [a]+selectValue sql = fmap unSingle <$> rawSql sql []++now :: DataSource -> IO UTCTime+now p = runTrans p selectNow++++

+ src/Yam/Transaction/Postgresql.hs view

@@ -0,0 +1,17 @@+module Yam.Transaction.Postgresql where++import           Yam.Transaction++import           Data.Monoid                 ((<>))+import           Data.String.Conversions     (cs)+import           Data.Text                   (pack)+import           Database.Persist.Postgresql+++postgresqlProvider :: DataSourceProvider+postgresqlProvider = DataSourceProvider "postgresql" "SELECT CURRENT_TIMESTAMP" go+  where+    go DataSourceConfig{..} =+      let port' = if port==0 then "5432" else pack (show port)+          conn  = "host=" <> url <> " port=" <> port' <> " user=" <> user <> " pass=" <> pass+      in createPostgresqlPool (cs conn) thread

+ src/Yam/Transaction/Sqlite.hs view

@@ -0,0 +1,8 @@+module Yam.Transaction.Sqlite where++import           Yam.Transaction++import           Database.Persist.Sqlite++sqliteProvider :: DataSourceProvider+sqliteProvider = DataSourceProvider "sqlite" "SELECT CURRENT_TIMESTAMP" (\DataSourceConfig{..} -> createSqlitePool url thread)

+ yam-transaction.cabal view

@@ -0,0 +1,54 @@+-- This file has been generated from package.yaml by hpack version 0.28.2.+--+-- see: https://github.com/sol/hpack+--+-- hash: e4ca05165e61fba8244e0de1ff8545778e51dc047824a8acde49d08c17ffcd87++name:           yam-transaction+version:        0.3.0+synopsis:       Yam transaction+description:    transaction module for yam+category:       Project+homepage:       https://github.com/leptonyu/yam#readme+bug-reports:    https://github.com/leptonyu/yam/issues+maintainer:     Daniel YU <leptonyu@gmail.com>+license:        MIT+license-file:   LICENSE+build-type:     Simple+cabal-version:  >= 1.10+extra-source-files:+    README.md++source-repository head+  type: git+  location: https://github.com/leptonyu/yam++library+  exposed-modules:+      Yam.Transaction+      Yam.Transaction.Sqlite+      Yam.Transaction.Postgresql+  other-modules:+      Paths_yam_transaction+  hs-source-dirs:+      src+  default-extensions: AutoDeriveTypeable BangPatterns BinaryLiterals ConstraintKinds DataKinds DefaultSignatures DeriveDataTypeable DeriveFoldable DeriveFunctor DeriveGeneric DeriveTraversable DuplicateRecordFields DoAndIfThenElse EmptyDataDecls ExistentialQuantification FlexibleContexts FlexibleInstances FunctionalDependencies GADTs GeneralizedNewtypeDeriving InstanceSigs KindSignatures LambdaCase MonadFailDesugaring MultiParamTypeClasses MultiWayIf NamedFieldPuns OverloadedStrings PartialTypeSignatures PatternGuards PolyKinds RankNTypes RecordWildCards ScopedTypeVariables StandaloneDeriving TupleSections TypeApplications TypeFamilies TypeOperators TypeSynonymInstances ViewPatterns+  ghc-options: -Wall -Wcompat -Wincomplete-record-updates -Wincomplete-uni-patterns -Wredundant-constraints -fno-warn-orphans+  build-depends:+      aeson+    , base >=4.7 && <5+    , conduit+    , data-default+    , monad-logger+    , mtl+    , persistent+    , persistent-postgresql+    , persistent-sqlite+    , resourcet+    , string-conversions+    , text+    , time+    , transformers+    , unliftio-core+    , yam-logger+  default-language: Haskell2010