diff --git a/ChangeLog.md b/ChangeLog.md
new file mode 100644
--- /dev/null
+++ b/ChangeLog.md
@@ -0,0 +1,5 @@
+# Revision history for ethereum-analyzer-webui
+
+## 0.1.0.0 -- YYYY-mm-dd
+
+* First version. Released on an unsuspecting world.
diff --git a/LICENSE b/LICENSE
new file mode 100644
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,202 @@
+
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diff --git a/README.md b/README.md
new file mode 100644
--- /dev/null
+++ b/README.md
@@ -0,0 +1,1 @@
+# ethereum-analyzer
diff --git a/Setup.hs b/Setup.hs
new file mode 100644
--- /dev/null
+++ b/Setup.hs
@@ -0,0 +1,3 @@
+import Distribution.Simple
+
+main = defaultMain
diff --git a/ethereum-analyzer-webui.cabal b/ethereum-analyzer-webui.cabal
new file mode 100644
--- /dev/null
+++ b/ethereum-analyzer-webui.cabal
@@ -0,0 +1,95 @@
+name: ethereum-analyzer-webui
+version: 1.0.0
+synopsis: A web frontend for ethereum-analyzer
+homepage: https://github.com/ethereumK/ethereum-analyzer
+license: Apache-2.0
+license-file: LICENSE
+author: Kevin Chen
+maintainer: k_@berkeley.edu
+category: Web, Ethereum, Static Analysis
+build-type: Simple
+extra-source-files: ChangeLog.md, README.md
+cabal-version: >=1.10
+description: A web frontend for ethereum-analyzer.
+
+source-repository head
+ type: git
+ location: https://github.com/zchn/ethereum-analyzer
+ branch: master
+ subdir: ethereum-analyzer-webui
+
+source-repository this
+ type: git
+ location: https://github.com/zchn/ethereum-analyzer
+ tag: v1.0.0
+ subdir: ethereum-analyzer-webui
+
+library
+ build-depends: base >= 4 && < 5,
+ aeson,
+ bimap,
+ bytestring,
+ conduit-combinators,
+ conduit-extra,
+ containers,
+ ethereum-analyzer,
+ ethereum-analyzer-deps,
+ exceptions,
+ extra,
+ fgl,
+ graphviz,
+ hexstring,
+ hflags,
+ hoopl >= 3.10.2.1,
+ http-conduit,
+ http-media,
+ http-types,
+ json-rpc,
+ logging-effect,
+ monad-logger,
+ mtl,
+ neat-interpolation,
+ network,
+ optparse-applicative,
+ prometheus-client,
+ prometheus-metrics-ghc,
+ protolude,
+ servant,
+ servant-server,
+ text,
+ time,
+ unordered-containers,
+ vector,
+ wai,
+ wai-extra,
+ wai-middleware-prometheus,
+ warp,
+ wl-pprint-text
+
+ exposed-modules: Ethereum.Analyzer.Web
+ other-modules: Ethereum.Analyzer.Web.API
+ , Ethereum.Analyzer.Web.API.Internal
+ , Ethereum.Analyzer.Web.Server
+ , Ethereum.Analyzer.Web.Server.Handlers
+ , Ethereum.Analyzer.Web.Server.Instrument
+ , Ethereum.Analyzer.Web.Server.Logging
+
+ ghc-options: -Wall
+ hs-source-dirs: src
+ buildable: True
+ default-language: Haskell98
+ default-extensions: OverloadedStrings
+
+executable ethereum-analyzer-webui
+ main-is: Main.hs
+ build-depends: base >= 4 && < 5,
+ ethereum-analyzer,
+ ethereum-analyzer-deps,
+ ethereum-analyzer-webui,
+ hflags,
+ monad-logger
+
+ ghc-options: -Wall
+ hs-source-dirs: exec_src
+ buildable: True
+ default-language: Haskell98
diff --git a/exec_src/Main.hs b/exec_src/Main.hs
new file mode 100644
--- /dev/null
+++ b/exec_src/Main.hs
@@ -0,0 +1,9 @@
+-- | Launch ethereum-analyzer server.
+module Main
+ ( main
+ ) where
+
+import Ethereum.Analyzer.Web (startApp)
+
+main :: IO ()
+main = startApp
diff --git a/src/Ethereum/Analyzer/Web.hs b/src/Ethereum/Analyzer/Web.hs
new file mode 100644
--- /dev/null
+++ b/src/Ethereum/Analyzer/Web.hs
@@ -0,0 +1,5 @@
+module Ethereum.Analyzer.Web
+ ( startApp
+ ) where
+
+import Ethereum.Analyzer.Web.Server (startApp)
diff --git a/src/Ethereum/Analyzer/Web/API.hs b/src/Ethereum/Analyzer/Web/API.hs
new file mode 100644
--- /dev/null
+++ b/src/Ethereum/Analyzer/Web/API.hs
@@ -0,0 +1,93 @@
+{-# LANGUAGE DataKinds #-}
+{-# LANGUAGE DeriveGeneric #-}
+{-# LANGUAGE MultiParamTypeClasses #-}
+{-# LANGUAGE QuasiQuotes #-}
+{-# LANGUAGE TypeOperators #-}
+
+-- | API definition for ethereum-analyzer.
+module Ethereum.Analyzer.Web.API
+ ( API
+ , apiraw
+ , RootPage(..)
+ , User(User)
+ , Users(..)
+ , DotCfgResp(..)
+ ) where
+
+import Protolude
+
+import Data.Aeson
+ (FromJSON(..), ToJSON(..), Value(..), object, (.=), (.:))
+import Data.Aeson.Types (typeMismatch)
+import qualified NeatInterpolation as NI
+import Servant.API
+ ((:>), (:<|>)(..), Get, JSON, MimeRender(..), QueryParam, Raw)
+
+import Ethereum.Analyzer.Web.API.Internal (HTML)
+
+-- | ethereum-analyzer API definition.
+type API = Get '[HTML] RootPage :<|> "users" :> Get '[JSON] Users :<|> "ea" :> "dotcfg" :> QueryParam "code" Text :> Get '[JSON] DotCfgResp :<|> "ea" :> "dotcfg2" :> QueryParam "code" Text :> Get '[JSON] DotCfgResp
+
+-- | Value-level representation of API.
+apiraw :: Proxy (API :<|> "web" :> Raw)
+apiraw = Proxy
+
+-- | Example object. Replace this with something relevant to your app.
+data User = User
+ { _userId :: Int
+ , _userFirstName :: Text
+ , _userLastName :: Text
+ } deriving (Eq, Show, Generic)
+
+instance FromJSON User
+
+instance ToJSON User
+
+data DotCfgResp = DotCfgResp
+ { _ctorDot :: Text
+ , _dispatcherDot :: Text
+ } deriving (Eq, Show, Generic)
+
+instance FromJSON DotCfgResp
+
+instance ToJSON DotCfgResp
+
+-- | Represents a list of users.
+--
+-- We have a newtype so we can be sure to return a JSON object.
+newtype Users =
+ Users [User]
+ deriving (Eq, Show, Generic)
+
+instance FromJSON Users where
+ parseJSON (Object v) = Users <$> v .: "users"
+ parseJSON x = typeMismatch "Users" x
+
+instance ToJSON Users where
+ toJSON (Users users) = object ["users" .= toJSON users]
+
+-- | Represents the root page of the service.
+data RootPage =
+ RootPage
+
+-- | Very simple root HTML page.
+instance MimeRender HTML RootPage where
+ mimeRender _ _ =
+ toS
+ [NI.text|
+
+
+ ethereum-analyzer
+
+ ethereum-analyzer
+
+
+ Source code at https://github.com/ethereumK/ethereum-analyzer/
+
+
+
+ |]
diff --git a/src/Ethereum/Analyzer/Web/API/Internal.hs b/src/Ethereum/Analyzer/Web/API/Internal.hs
new file mode 100644
--- /dev/null
+++ b/src/Ethereum/Analyzer/Web/API/Internal.hs
@@ -0,0 +1,14 @@
+-- | Definition of HTML content type.
+module Ethereum.Analyzer.Web.API.Internal
+ ( HTML
+ ) where
+
+import Network.HTTP.Media ((//), (/:))
+import Servant.API (Accept(..))
+
+-- | HTML content type.
+data HTML =
+ HTML
+
+instance Accept HTML where
+ contentType _ = "text" // "html" /: ("charset", "utf-8")
diff --git a/src/Ethereum/Analyzer/Web/Server.hs b/src/Ethereum/Analyzer/Web/Server.hs
new file mode 100644
--- /dev/null
+++ b/src/Ethereum/Analyzer/Web/Server.hs
@@ -0,0 +1,120 @@
+{-# LANGUAGE NoImplicitPrelude, OverloadedStrings, RecordWildCards
+ #-}
+{-# LANGUAGE FlexibleContexts #-}
+{-# LANGUAGE DataKinds #-}
+
+-- | Serve the API as an HTTP server.
+module Ethereum.Analyzer.Web.Server
+ ( server
+ , startApp
+ ) where
+
+import Protolude
+
+import Control.Monad.Log (Severity(..))
+import qualified Data.List as List
+import GHC.Stats (getGCStatsEnabled)
+import Network.Wai.Handler.Warp
+ (Port, Settings, defaultSettings, runSettings, setBeforeMainLoop,
+ setPort)
+import qualified Network.Wai.Middleware.RequestLogger as RL
+import Options.Applicative
+ (ParserInfo, auto, eitherReader, execParser, fullDesc, header,
+ help, helper, info, long, metavar, option, progDesc, switch, value)
+import qualified Prometheus as Prom
+import qualified Prometheus.Metric.GHC as Prom
+import Servant (serve)
+import Text.PrettyPrint.Leijen.Text (int, text)
+
+import Ethereum.Analyzer.Web.API (apiraw)
+import Ethereum.Analyzer.Web.Server.Handlers (server)
+import Ethereum.Analyzer.Web.Server.Instrument
+ (defaultPrometheusSettings, prometheus, requestDuration)
+import qualified Ethereum.Analyzer.Web.Server.Logging as Log
+
+-- | Configuration for the application.
+data Config = Config
+ { port :: Port
+ , accessLogs :: AccessLogs
+ , logLevel :: Severity
+ , enableGhcMetrics :: Bool
+ } deriving (Show)
+
+-- | What level of access logs to show.
+data AccessLogs
+ = Disabled -- ^ Don't show access logs.
+ | Enabled -- ^ Show Apache-style access logs.
+ | DevMode -- ^ Show detailed, colorful access logs. Not suitable in production.
+ deriving (Eq, Show)
+
+-- | Run the service.
+startApp :: IO ()
+startApp = runApp =<< execParser options
+
+options :: ParserInfo Config
+options = info (helper <*> parser) description
+ where
+ parser =
+ Config <$>
+ option auto (fold [long "port", metavar "PORT", help "Port to listen on"]) <*>
+ option
+ (eitherReader parseAccessLogs)
+ (fold
+ [long "access-logs", help "How to log HTTP access", value Disabled]) <*>
+ option
+ (eitherReader
+ (maybe (throwError (toS invalidLogLevel)) pure . Log.fromKeyword . toS))
+ (fold
+ [ long "log-level"
+ , help "Minimum severity for log messages"
+ , value Informational
+ ]) <*>
+ switch
+ (fold
+ [ long "ghc-metrics"
+ , help "Export GHC metrics. Requires running with +RTS."
+ ])
+ invalidLogLevel = "Log level must be one of: " <> allLogLevels
+ allLogLevels =
+ fold . List.intersperse "," . List.map Log.toKeyword $ enumFrom minBound
+ parseAccessLogs "none" = pure Disabled
+ parseAccessLogs "basic" = pure Enabled
+ parseAccessLogs "dev" = pure DevMode
+ parseAccessLogs _ = throwError "One of 'none', 'basic', or 'dev'"
+ description =
+ fold [fullDesc, progDesc "Ethereum Analyzer", header "ethereum-analyzer"]
+
+runApp :: Config -> IO ()
+runApp config@Config {..} = do
+ requests <- Prom.registerIO requestDuration
+ when enableGhcMetrics $
+ do statsEnabled <- getGCStatsEnabled
+ unless statsEnabled $
+ Log.withLogging logLevel $
+ Log.log
+ Warning
+ (text
+ "Exporting GHC metrics but GC stats not enabled. Re-run with +RTS -T.")
+ void $ Prom.register Prom.ghcMetrics
+ runSettings settings (middleware requests)
+ where
+ settings = warpSettings config
+ middleware r =
+ logging . prometheus defaultPrometheusSettings r "ethereum_analyzer" $ app
+ logging =
+ case accessLogs of
+ Disabled -> identity
+ Enabled -> RL.logStdout
+ DevMode -> RL.logStdoutDev
+ app = serve apiraw (server logLevel)
+
+-- | Generate warp settings from config
+--
+-- Serve from a port and print out where we're serving from.
+warpSettings :: Config -> Settings
+warpSettings Config {..} =
+ setBeforeMainLoop
+ (Log.withLogging logLevel printPort)
+ (setPort port defaultSettings)
+ where
+ printPort = Log.log Informational (text "Listening on :" `mappend` int port)
diff --git a/src/Ethereum/Analyzer/Web/Server/Handlers.hs b/src/Ethereum/Analyzer/Web/Server/Handlers.hs
new file mode 100644
--- /dev/null
+++ b/src/Ethereum/Analyzer/Web/Server/Handlers.hs
@@ -0,0 +1,63 @@
+{-# LANGUAGE DataKinds #-}
+{-# LANGUAGE FlexibleContexts #-}
+{-# LANGUAGE TypeOperators #-}
+
+-- | Implementation of the ethereum-analyzer API.
+module Ethereum.Analyzer.Web.Server.Handlers
+ ( server
+ ) where
+
+-- XXX: jml doesn't like the name "Handlers" for this, and isn't sure that it
+-- should be in a submodule of Project.Server. Perhaps the code in
+-- Project.Server (which is command-line processing, setting up logs &
+-- monitoring, starting the HTTP server) should be in a different module.
+import Protolude hiding (Handler)
+
+import Ethereum.Analyzer.Util
+import Ethereum.Analyzer.Web.API
+ (API, RootPage(..), User(..), Users(..), DotCfgResp(..))
+import qualified Ethereum.Analyzer.Web.Server.Logging as Log
+import Control.Monad.Except (ExceptT(..))
+import Control.Monad.Log (Severity, logInfo)
+import qualified Data.Text.Lazy as DTL
+import Servant
+ (ServantErr, Server, (:<|>)(..), (:>), (:~>)(..), enter, Raw)
+import Servant.Utils.StaticFiles (serveDirectory)
+import Text.PrettyPrint.Leijen.Text (Doc, Pretty, text)
+
+-- | ethereum-analyzer API implementation.
+server :: Severity -> Server (API :<|> "web" :> Raw)
+server logLevel = enter (toHandler logLevel) handlers :<|> serveDirectory "web"
+ where
+ handlers = pure RootPage :<|> users :<|> dotcfg :<|> dotcfg2
+
+-- | Our custom handler type.
+type Handler msg = ExceptT ServantErr (Log.LogM msg IO)
+
+-- | Translate our custom monad into a Servant handler.
+--
+-- See http://haskell-servant.readthedocs.io/en/stable/tutorial/Server.html#using-another-monad-for-your-handlers
+-- for the details.
+toHandler
+ :: Pretty msg
+ => Severity -> (Handler msg :~> ExceptT ServantErr IO)
+toHandler logLevel = Nat toHandler'
+ where
+ toHandler'
+ :: Pretty msg
+ => Handler msg a -> ExceptT ServantErr IO a
+ toHandler' = ExceptT . Log.withLogging logLevel . runExceptT
+
+-- | Example endpoint.
+users :: Handler Doc Users
+users = do
+ logInfo (text "Example of logging")
+ pure (Users [User 1 "Isaac" "Newton", User 2 "Albert" "Einstein"])
+
+dotcfg :: Maybe Text -> Handler Doc DotCfgResp
+dotcfg (Just t) = pure (DotCfgResp (decompileToDotText t) "")
+dotcfg _ = pure (DotCfgResp "" "")
+
+dotcfg2 :: Maybe Text -> Handler Doc DotCfgResp
+dotcfg2 (Just t) = pure (uncurry DotCfgResp $ decompileToDotText2 t)
+dotcfg2 _ = pure (DotCfgResp "" "")
diff --git a/src/Ethereum/Analyzer/Web/Server/Instrument.hs b/src/Ethereum/Analyzer/Web/Server/Instrument.hs
new file mode 100644
--- /dev/null
+++ b/src/Ethereum/Analyzer/Web/Server/Instrument.hs
@@ -0,0 +1,104 @@
+{-# LANGUAGE NoImplicitPrelude, OverloadedStrings, RecordWildCards
+ #-}
+
+-- | Prometheus instrumentation for ethereum-analyzer.
+module Ethereum.Analyzer.Web.Server.Instrument
+ ( metrics
+ , requestDuration
+ , instrumentApp
+ , prometheus
+ , PrometheusSettings(..)
+ , defaultPrometheusSettings
+ ) where
+
+import Protolude
+
+import Data.ByteString.Builder (byteString)
+import Data.Time.Clock (diffUTCTime, getCurrentTime)
+import qualified Network.HTTP.Types as HTTP
+import qualified Network.Wai as Wai
+import qualified Prometheus as Prom
+
+-- | Settings that control the behavior of the Prometheus middleware.
+data PrometheusSettings = PrometheusSettings
+ { prometheusEndPoint :: [Text]
+ -- ^ The path that will be used for exporting metrics. The default value
+ -- is ["metrics"] which corresponds to the path /metrics.
+ , prometheusHandlerName :: Maybe Text
+ -- ^ The name of the handler used to record metrics about the Prometheus
+ -- endpoint. If Nothing, then we won't record any.
+ }
+
+-- | Default settings for Prometheus. Serve metrics at /metrics and record
+-- latency information for that endpoint with 'handler="metrics"'.
+defaultPrometheusSettings :: PrometheusSettings
+defaultPrometheusSettings = PrometheusSettings ["metrics"] (Just "metrics")
+
+-- | Core information about HTTP requests:
+--
+-- Labels:
+-- * handler: the name of the application
+-- * method: the HTTP method requested
+-- * status_code: the HTTP response code
+--
+-- Actual metric is the latency of the request.
+type RequestDuration = Prom.Metric (Prom.Vector Prom.Label3 Prom.Summary)
+
+requestDuration :: IO RequestDuration
+requestDuration =
+ Prom.vector ("handler", "method", "status_code") $ Prom.summary info Prom.defaultQuantiles
+ where
+ info =
+ Prom.Info
+ "http_request_duration_seconds"
+ "The HTTP request latencies in microseconds."
+
+-- | Instrument a WAI app with the default WAI metrics.
+instrumentApp
+ :: RequestDuration -- ^ The metric to instrument
+ -> Text -- ^ The label used to identify this app
+ -> Wai.Application -- ^ The app to instrument
+ -> Wai.Application -- ^ The instrumented app
+instrumentApp metric handler app req respond = do
+ start <- getCurrentTime
+ app
+ req
+ (\res -> do
+ recordResult start (HTTP.statusCode (Wai.responseStatus res))
+ respond res) `onException`
+ recordResult start (500 :: Integer)
+ where
+ recordResult start statusCode = do
+ end <- getCurrentTime
+ let latency = fromRational $ toRational (end `diffUTCTime` start)
+ Prom.withLabel (toS handler, method, status) (Prom.observe latency) metric
+ where
+ method = toS (Wai.requestMethod req)
+ status = show statusCode
+
+-- | Instrument an app with Prometheus and export metrics from the configured
+-- handler.
+prometheus
+ :: PrometheusSettings -- ^ How we're going to use Prometheus
+ -> RequestDuration -- ^ A metric to instrument with request information
+ -> Text -- ^ The label used to identify the app
+ -> Wai.Middleware
+prometheus PrometheusSettings {..} duration appName app req respond =
+ if Wai.requestMethod req == HTTP.methodGet && Wai.pathInfo req == prometheusEndPoint
+ then case prometheusHandlerName of
+ Nothing -> respondWithMetrics respond
+ Just name ->
+ instrumentApp duration name (const respondWithMetrics) req respond
+ else instrumentApp duration appName app req respond
+
+-- | Application that serves the Prometheus /metrics page regardless of what
+-- was requested.
+metrics :: Wai.Application
+metrics = const respondWithMetrics
+
+respondWithMetrics :: (Wai.Response -> IO Wai.ResponseReceived) -> IO Wai.ResponseReceived
+respondWithMetrics respond = do
+ content <- Prom.exportMetricsAsText
+ respond $ Wai.responseBuilder HTTP.status200 headers $ byteString content
+ where
+ headers = [(HTTP.hContentType, "text/plain; version=0.0.4")]
diff --git a/src/Ethereum/Analyzer/Web/Server/Logging.hs b/src/Ethereum/Analyzer/Web/Server/Logging.hs
new file mode 100644
--- /dev/null
+++ b/src/Ethereum/Analyzer/Web/Server/Logging.hs
@@ -0,0 +1,84 @@
+{-# LANGUAGE NoImplicitPrelude, OverloadedStrings, RecordWildCards,
+ FlexibleContexts #-}
+
+-- | Logging helpers for ethereum-analyzer.
+module Ethereum.Analyzer.Web.Server.Logging
+ ( LogM
+ , withLogging
+ , log
+ , fromKeyword
+ , toKeyword
+ ) where
+
+import Protolude hiding (log)
+
+import Control.Monad.Catch (MonadMask)
+import Control.Monad.Log
+ (Handler, LoggingT, MonadLog, Severity(..), WithTimestamp(..),
+ WithSeverity(..), defaultBatchingOptions, logMessage,
+ mapLogMessageM, renderWithSeverity, renderWithTimestamp,
+ runLoggingT, timestamp, withFDHandler)
+import Data.Time.Format
+ (defaultTimeLocale, formatTime, iso8601DateFormat)
+import Text.PrettyPrint.Leijen.Text (Doc, Pretty(..))
+
+type LogM msg m = LoggingT (WithSeverity msg) (LoggingT (WithTimestamp (WithSeverity msg)) m)
+
+-- | Take a bunch of logs with severity and print them to stdout with timestamps.
+withLogging
+ :: (MonadMask m, MonadIO m, Pretty msg)
+ => Severity -> LogM msg m a -> m a
+withLogging severityThreshold body =
+ withFDHandler defaultBatchingOptions stdout 0.4 80 $
+ \stdoutHandler ->
+ runLoggingT
+ (withTimestamps body)
+ (printLogs severityThreshold stdoutHandler)
+
+withTimestamps
+ :: (MonadIO m, MonadLog (WithTimestamp msg) m)
+ => LoggingT msg m a -> m a
+withTimestamps = mapLogMessageM timestamp
+
+type Keyword = Text
+
+fromKeyword
+ :: Alternative m
+ => Keyword -> m Severity
+fromKeyword "emerg" = pure Emergency
+fromKeyword "alert" = pure Alert
+fromKeyword "crit" = pure Critical
+fromKeyword "err" = pure Error
+fromKeyword "error" = pure Error
+fromKeyword "warning" = pure Warning -- A friend in need's a friend indeed.
+fromKeyword "warn" = pure Warning
+fromKeyword "notice" = pure Notice
+fromKeyword "info" = pure Informational
+fromKeyword "debug" = pure Debug
+fromKeyword _ = empty
+
+toKeyword :: Severity -> Keyword
+toKeyword Emergency = "emerg"
+toKeyword Alert = "alert"
+toKeyword Critical = "crit"
+toKeyword Error = "err"
+toKeyword Warning = "warning"
+toKeyword Notice = "notice"
+toKeyword Informational = "info"
+toKeyword Debug = "debug"
+
+printLogs
+ :: (Pretty a, MonadIO m)
+ => Severity -> Handler m Doc -> WithTimestamp (WithSeverity a) -> m ()
+printLogs severityThreshold handler message =
+ when (severityThreshold >= msgSeverity (discardTimestamp message)) $
+ handler . renderWithTimestamp timeFormatter (renderWithSeverity pretty) $ message
+ where
+ timeFormatter = formatTime defaultTimeLocale timeFormat
+ timeFormat = iso8601DateFormat (Just "%H:%M:%S.%q")
+
+-- | Convenience method to log with severity.
+log
+ :: MonadLog (WithSeverity a) m
+ => Severity -> a -> m ()
+log severity msg = logMessage (WithSeverity severity msg)