persistent-database-url (empty) → 1.0.0

raw patch · 5 files changed

+114/−0 lines, 5 filesdep +basedep +bytestringdep +failsetup-changed

Dependencies added: base, bytestring, fail, hspec, persistent-database-url, persistent-postgresql, uri-bytestring

Files

• LICENSE +19/−0
• Setup.hs +2/−0
• persistent-database-url.cabal +43/−0
• src/Database/Persist/URL.hs +49/−0
• test/Spec.hs +1/−0

@@ -0,0 +1,19 @@+Copyright (c) 2014 thoughtbot <hello@thoughtbot.com>++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.

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

@@ -0,0 +1,43 @@+name:                   persistent-database-url+version:                1.0.0+author:                 Joe Ferris <jferris@thoughtbot.com>+maintainer:             Joe Ferris <jferris@thoughtbot.com>+license:                MIT+license-File:           LICENSE+synopsis:               Parse DATABASE_URL into configuration types for Persistent+description:+  Converts the parameters parsed from a database url to the concrete+  configuration types required by persistent.+  .+  Currently, only persistent-postgresql's PostgresConf is provided.+  .++cabal-Version:          >= 1.10+build-Type:             Simple+category:               Database++library+  default-language:     Haskell2010+  hs-source-dirs:       src+  ghc-options:          -Wall+  exposed-modules:      Database.Persist.URL+  build-depends:        base >= 4 && < 5+                      , bytestring+                      , persistent-postgresql >= 1.0.0+                      , uri-bytestring+                      , fail++test-suite spec+  type:                 exitcode-stdio-1.0+  default-language:     Haskell2010+  hs-source-dirs:       test+  ghc-options:          -Wall+  main-is:              Spec.hs+  build-depends:        base >= 4.7.0.0+                      , hspec+                      , persistent-database-url+                      , persistent-postgresql++source-repository head+  type:                 git+  location:             https://github.com/thoughtbot/persistent-database-url

@@ -0,0 +1,49 @@+{-# LANGUAGE OverloadedStrings #-}+module Database.Persist.URL+    ( fromDatabaseUrl+    ) where++import Control.Monad (unless)+import Control.Monad.Fail (MonadFail)+import Data.ByteString (ByteString, uncons)+import Data.Monoid ((<>))+import Database.Persist.Postgresql (PostgresConf(..))+import URI.ByteString+    ( Authority(..)+    , Host(..)+    , Port(..)+    , URI(..)+    , UserInfo(..)+    , Scheme(..)+    , parseURI+    , strictURIParserOptions+    )++import qualified Data.ByteString.Char8 as Char8++-- | Build a @'PostgresConf'@ by parsing a database URL String+fromDatabaseUrl :: MonadFail m => Int -> ByteString -> m PostgresConf+fromDatabaseUrl size url = do+    uri <- abortLeft $ parseURI strictURIParserOptions url+    auth <- abortNothing "authority" $ uriAuthority uri+    userInfo <- abortNothing "user info" $ authorityUserInfo auth+    port <- abortNothing "port" $ authorityPort auth+    dbName <- abortNothing "path" $ snd <$> uncons (uriPath uri)+    unless (schemeBS (uriScheme uri) == "postgres") $+        fail "DATABASE_URL has unknown scheme"++    return PostgresConf+        { pgConnStr =+            "user=" <> uiUsername userInfo+            <> " password=" <> uiPassword userInfo+            <> " host=" <> hostBS (authorityHost auth)+            <> " port=" <> Char8.pack (show $ portNumber port)+            <> " dbname=" <> dbName+        , pgPoolSize = size+        }++abortLeft :: (MonadFail m, Show e) => Either e b -> m b+abortLeft = either (fail . ("DATABASE_URL failed to parse: " <>) . show) return++abortNothing :: MonadFail m => String -> Maybe a -> m a+abortNothing s = maybe (fail $ "DATABASE_URL is missing " <> s) return

@@ -0,0 +1,1 @@+{-# OPTIONS_GHC -F -pgmF hspec-discover #-}