Draft: Tools

Makefile

@@ -1,7 +1,7 @@
 .PHONY: build test run docs
 
 build:
-	stack build 
+	stack build mig-postgresql-simple
 
 test:
 	stack test

examples/mig-example-apps/JsonApi/Init.hs

@@ -4,17 +4,14 @@ module Init (
 ) where
 
 import Control.Monad
-import Data.Aeson ((.=))
-import Data.Aeson qualified as Json
 import Data.IORef
 import Data.List qualified as List
 import Data.Map.Strict qualified as Map
 import Data.Set qualified as Set
 import Data.Text (Text)
 import Data.Text qualified as Text
 import Data.Time
-import Data.Yaml qualified as Yaml
-import System.Log.FastLogger
+import Mig.Tool.Log.Fast qualified as Log
 import System.Random
 
 import Interface
@@ -38,18 +35,15 @@ initEnv port = do
 
 initProc :: Int -> IO Proc
 initProc port = do
-  (writeLog, closeLogger) <- newFastLogger (LogStdout defaultBufSize)
-  let logger = initLogger writeLog
-
-      logMessage :: Text -> IO ()
-      logMessage msg = logger.info $ Json.toJSON msg
+  logger <- Log.newLoggerStdout Log.LogYaml
+  let Log.LogFuns{..} = Log.logFuns logger
   pure $
     Proc
       { logger = logger
-      , startup = logMessage $ ("App starts on port: " <> Text.pack (show port))
+      , startup = logInfo @Text $ ("App starts on port: " <> Text.pack (show port))
       , cleanup = do
-          logMessage "App shutdown"
-          closeLogger
+          logInfo @Text "App shutdown"
+          logger.close.run
       }
 
 initAuth :: St -> Auth
@@ -82,30 +76,6 @@ toDaySpan day (DayInterval count) = List.unfoldr go (day, count)
       | n <= 0 = Nothing
       | otherwise = Just (succ d, (succ d, n - 1))
 
-initLogger :: (LogStr -> IO ()) -> Logger
-initLogger writeLog =
-  Logger
-    { error = logBy "ERROR"
-    , info = logBy "INFO"
-    , debug = logBy "DEBUG"
-    }
-  where
-    logBy :: Text -> LogFun
-    logBy level msg = do
-      now <- getCurrentTime
-      writeLog $
-        toLogStr $
-          (<> "\n") $
-            Yaml.encode $
-              Json.object
-                [ "log"
-                    .= Json.object
-                      [ "message" .= msg
-                      , "level" .= level
-                      , "time" .= now
-                      ]
-                ]
-
 initStateConfig :: IO InitSt
 initStateConfig = do
   now <- (.utctDay) <$> getCurrentTime

examples/mig-example-apps/JsonApi/Interface.hs

@@ -1,18 +1,18 @@
 module Interface (
   Env (..),
-  LogFun,
   Proc (..),
-  Logger (..),
-  logInfo,
-  logDebug,
-  logError,
   Auth (..),
   Weather (..),
+  getLogger,
+  module X,
 ) where
 
-import Data.Aeson (ToJSON (..), Value)
+import Mig.Tool.Log as X (Log, LogFuns (..), LogNamespace, addLogNamespace, logFuns)
 import Types
 
+getLogger :: Env -> LogNamespace -> LogFuns
+getLogger env ns = logFuns (addLogNamespace ns env.proc.logger)
+
 -- | Site's environment. It contains all interfaces
 data Env = Env
   { weather :: Weather
@@ -24,25 +24,7 @@ data Env = Env
 data Proc = Proc
   { startup :: IO ()
   , cleanup :: IO ()
-  , logger :: Logger
-  }
-
-type LogFun = Value -> IO ()
-
-logInfo :: (ToJSON a) => Env -> a -> IO ()
-logInfo env = env.proc.logger.info . toJSON
-
-logDebug :: (ToJSON a) => Env -> a -> IO ()
-logDebug env = env.proc.logger.debug . toJSON
-
-logError :: (ToJSON a) => Env -> a -> IO ()
-logError env = env.proc.logger.error . toJSON
-
--- logger interface
-data Logger = Logger
-  { info :: LogFun
-  , debug :: LogFun
-  , error :: LogFun
+  , logger :: Log
   }
 
 -- authorization interface

examples/mig-example-apps/JsonApi/Server.hs

@@ -32,7 +32,9 @@ server env =
         , "update" /. updateWeather env
         ]
 
-    withTrace = applyPlugin (Trace.logHttpBy (logInfo env) Trace.V2)
+    withTrace = applyPlugin (Trace.logHttpBy logInfo Trace.V2)
+
+    LogFuns{..} = getLogger env "http"
 
 -------------------------------------------------------------------------------------
 -- application handlers
@@ -44,36 +46,42 @@ getWeather ::
   Capture "day-interval" DayInterval ->
   Get (RespOr Text (Timed WeatherData))
 getWeather env (Capture location) (Capture fromDay) (Capture interval) = Send $ do
-  logInfo @Text env "get the weather forecast"
+  logInfo @Text "get the weather forecast"
   mResult <- env.weather.get location fromDay interval
   pure $ case mResult of
     Just result -> ok result
     Nothing -> bad status400 "No data"
+  where
+    LogFuns{..} = getLogger env "getWeather"
 
 updateWeather ::
   Env ->
   Body UpdateData ->
   Post (RespOr Text ())
 updateWeather env (Body updateData) = Send $ do
-  logInfo @Text env "update the weather data"
+  logInfo @Text "update the weather data"
   ok <$> env.weather.update updateData
+  where
+    LogFuns{..} = getLogger env "updateWeather"
 
 -------------------------------------------------------------------------------------
 -- authorization
 
 requestAuthToken :: Env -> Body User -> Post (RespOr Text AuthToken)
 requestAuthToken env (Body user) = Send $ do
-  logInfo env ("get new auth token for: " <> user.name)
+  logInfo ("get new auth token for: " <> user.name)
   isValid <- env.auth.validUser user
   if isValid
     then do
       token <- env.auth.newToken user
       void $ forkIO $ setExpireTimer token
       pure $ ok token
     else do
-      logError env $ Text.unwords ["User", user.name, "does not have access to the service"]
+      logError $ Text.unwords ["User", user.name, "does not have access to the service"]
       pure $ bad unauthorized401 "User is not valid"
   where
+    LogFuns{..} = getLogger env "requestAuthToken"
+
     setExpireTimer :: AuthToken -> IO ()
     setExpireTimer token = do
       threadDelay (1_000_000 * 60 * 10) -- 10 minutes
@@ -85,7 +93,8 @@ withAuth env (Header token) = processResponse $ \getResp -> do
   if isOk
     then getResp
     else do
-      logError env errMessage
+      logError errMessage
       pure $ Just (bad status500 $ Text.encodeUtf8 errMessage)
   where
     errMessage = "Token is invalid"
+    LogFuns{..} = getLogger env "auth"

examples/mig-example-apps/mig-example-apps.cabal

@@ -306,13 +306,14 @@ executable json-api-mig-example-app
     , bytestring
     , containers
     , derive-topdown
-    , fast-logger
     , http-types
     , mig
     , mig-client
     , mig-extra
+    , mig-fast-logger
     , mig-server
     , mig-swagger-ui
+    , mig-tools
     , openapi3
     , pretty-simple
     , random

examples/mig-example-apps/package.yaml

@@ -119,7 +119,8 @@ executables:
     - -with-rtsopts=-N
     dependencies:
     - containers
-    - fast-logger
+    - mig-tools
+    - mig-fast-logger
     - yaml
 
   counter-mig-example-app:

examples/mig-example-apps/stack.yaml

@@ -11,3 +11,5 @@ extra-deps:
   - ../../mig-swagger-ui
   - ../../mig-wai
   - ../../mig-extra
+  - ../../mig-tools
+  - ../../tools/mig-fast-logger

mig-tools/.gitignore

@@ -0,0 +1,2 @@
+.stack-work/
+*~

mig-tools/LICENSE

@@ -0,0 +1,30 @@
+Copyright Author name here (c) 2023
+
+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 Author name here 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.

mig-tools/README.md

@@ -0,0 +1 @@
+# mig-tools

mig-tools/Setup.hs

@@ -0,0 +1,3 @@
+import Distribution.Simple
+
+main = defaultMain

mig-tools/mig-tools.cabal

@@ -0,0 +1,82 @@
+cabal-version: 2.2
+
+-- This file has been generated from package.yaml by hpack version 0.35.2.
+--
+-- see: https://github.com/sol/hpack
+
+name:           mig-tools
+version:        0.1.0.0
+description:    Please see the README on GitHub at <https://github.com/githubuser/mig-tools#readme>
+homepage:       https://github.com/githubuser/mig-tools#readme
+bug-reports:    https://github.com/githubuser/mig-tools/issues
+author:         Author name here
+maintainer:     [email protected]
+copyright:      2023 Author name here
+license:        BSD-3-Clause
+license-file:   LICENSE
+build-type:     Simple
+extra-source-files:
+    README.md
+
+source-repository head
+  type: git
+  location: https://github.com/githubuser/mig-tools
+
+library
+  exposed-modules:
+      Mig.Tool.Base
+      Mig.Tool.Db
+      Mig.Tool.Log
+  other-modules:
+      Paths_mig_tools
+  autogen-modules:
+      Paths_mig_tools
+  hs-source-dirs:
+      src
+  default-extensions:
+      OverloadedStrings
+      OverloadedRecordDot
+      DuplicateRecordFields
+      LambdaCase
+      DerivingStrategies
+      StrictData
+      AllowAmbiguousTypes
+      DeriveAnyClass
+  ghc-options: -Wall -Wcompat -Widentities -Wincomplete-record-updates -Wincomplete-uni-patterns -Wmissing-export-lists -Wmissing-home-modules -Wpartial-fields -Wredundant-constraints
+  build-depends:
+      aeson
+    , base >=4.7 && <5
+    , bytestring
+    , mtl
+    , text
+    , time
+  default-language: GHC2021
+
+test-suite mig-tools-test
+  type: exitcode-stdio-1.0
+  main-is: Spec.hs
+  other-modules:
+      Paths_mig_tools
+  autogen-modules:
+      Paths_mig_tools
+  hs-source-dirs:
+      test
+  default-extensions:
+      OverloadedStrings
+      OverloadedRecordDot
+      DuplicateRecordFields
+      LambdaCase
+      DerivingStrategies
+      StrictData
+      AllowAmbiguousTypes
+      DeriveAnyClass
+  ghc-options: -Wall -Wcompat -Widentities -Wincomplete-record-updates -Wincomplete-uni-patterns -Wmissing-export-lists -Wmissing-home-modules -Wpartial-fields -Wredundant-constraints -threaded -rtsopts -with-rtsopts=-N
+  build-depends:
+      aeson
+    , base >=4.7 && <5
+    , bytestring
+    , mig-tools
+    , mtl
+    , text
+    , time
+  default-language: GHC2021