mirror of
https://github.com/hasura/graphql-engine.git
synced 2024-12-16 09:51:59 +03:00
12b57530f3
Co-authored-by: Anon Ray <616387+ecthiender@users.noreply.github.com> GitOrigin-RevId: e3a845d93d05545816aa9448aad5845b7247b679
992 lines
43 KiB
Haskell
992 lines
43 KiB
Haskell
{-# LANGUAGE CPP #-}
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{-# LANGUAGE UndecidableInstances #-}
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module Hasura.App where
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import Hasura.Prelude
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import qualified Control.Concurrent.Async.Lifted.Safe as LA
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import qualified Control.Concurrent.Extended as C
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import qualified Control.Concurrent.STM as STM
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import qualified Control.Exception.Lifted as LE
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import qualified Data.Aeson as A
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import qualified Data.ByteString.Char8 as BC
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import qualified Data.ByteString.Lazy.Char8 as BLC
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import qualified Data.Environment as Env
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import qualified Data.HashMap.Strict as HM
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import qualified Data.Set as Set
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import qualified Data.Text as T
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import qualified Data.Time.Clock as Clock
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import qualified Data.Yaml as Y
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import qualified Database.PG.Query as Q
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import qualified Network.HTTP.Client as HTTP
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import qualified Network.HTTP.Client.TLS as HTTP
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import qualified Network.Wai.Handler.Warp as Warp
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import qualified System.Log.FastLogger as FL
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import qualified System.Metrics as EKG
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import qualified System.Metrics.Gauge as EKG.Gauge
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import qualified Text.Mustache.Compile as M
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import qualified Web.Spock.Core as Spock
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import Control.Concurrent.STM.TVar (TVar, readTVarIO)
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import Control.Exception (bracket_, throwIO)
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import Control.Monad.Catch (Exception, MonadCatch, MonadMask,
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MonadThrow, onException)
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import Control.Monad.Morph (hoist)
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import Control.Monad.STM (atomically)
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import Control.Monad.Stateless
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import Control.Monad.Trans.Control (MonadBaseControl (..))
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import Control.Monad.Trans.Managed (ManagedT (..))
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import Control.Monad.Unique
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import Data.FileEmbed (makeRelativeToProject)
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import Data.Time.Clock (UTCTime)
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#ifndef PROFILING
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import GHC.AssertNF
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#endif
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import Network.HTTP.Client.Extended
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import Options.Applicative
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import System.Environment (getEnvironment)
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import qualified Hasura.GraphQL.Execute.LiveQuery.Poll as EL
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import qualified Hasura.GraphQL.Transport.WebSocket.Server as WS
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import qualified Hasura.Tracing as Tracing
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import Hasura.Backends.Postgres.Connection
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import Hasura.Base.Error
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import Hasura.EncJSON
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import Hasura.Eventing.Common
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import Hasura.Eventing.EventTrigger
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import Hasura.Eventing.ScheduledTrigger
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import Hasura.GraphQL.Execute (ExecutionStep (..),
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MonadGQLExecutionCheck (..),
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checkQueryInAllowlist)
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import Hasura.GraphQL.Execute.Action
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import Hasura.GraphQL.Execute.Action.Subscription
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import Hasura.GraphQL.Logging (MonadQueryLog (..))
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import Hasura.GraphQL.Transport.HTTP (MonadExecuteQuery (..))
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import Hasura.GraphQL.Transport.HTTP.Protocol (toParsed)
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import Hasura.Logging
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import Hasura.Metadata.Class
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import Hasura.RQL.DDL.Schema.Cache
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import Hasura.RQL.DDL.Schema.Cache.Common
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import Hasura.RQL.DDL.Schema.Catalog
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import Hasura.RQL.DDL.Schema.Source
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import Hasura.RQL.Types
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import Hasura.RQL.Types.Run
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import Hasura.Server.API.Query (requiresAdmin, runQueryM)
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import Hasura.Server.App
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import Hasura.Server.Auth
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import Hasura.Server.CheckUpdates (checkForUpdates)
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import Hasura.Server.Init
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import Hasura.Server.Logging
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import Hasura.Server.Migrate (getMigratedFrom, migrateCatalog)
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import Hasura.Server.SchemaUpdate
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import Hasura.Server.Telemetry
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import Hasura.Server.Types
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import Hasura.Server.Version
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import Hasura.Session
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data ExitCode
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-- these are used during server initialization:
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= InvalidEnvironmentVariableOptionsError
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| InvalidDatabaseConnectionParamsError
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| AuthConfigurationError
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| EventSubSystemError
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| DatabaseMigrationError
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| SchemaCacheInitError -- ^ used by MT because it initialises the schema cache only
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-- these are used in app/Main.hs:
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| MetadataExportError
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| MetadataCleanError
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| ExecuteProcessError
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| DowngradeProcessError
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deriving Show
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data ExitException
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= ExitException
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{ eeCode :: !ExitCode
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, eeMessage :: !BC.ByteString
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} deriving (Show)
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instance Exception ExitException
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printErrExit :: (MonadIO m) => forall a . ExitCode -> String -> m a
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printErrExit reason = liftIO . throwIO . ExitException reason . BC.pack
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printErrJExit :: (A.ToJSON a, MonadIO m) => forall b . ExitCode -> a -> m b
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printErrJExit reason = liftIO . throwIO . ExitException reason . BLC.toStrict . A.encode
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parseHGECommand :: EnabledLogTypes impl => Parser (RawHGECommand impl)
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parseHGECommand =
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subparser
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( command "serve" (info (helper <*> (HCServe <$> serveOptionsParser))
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( progDesc "Start the GraphQL Engine Server"
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<> footerDoc (Just serveCmdFooter)
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))
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<> command "export" (info (pure HCExport)
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( progDesc "Export graphql-engine's metadata to stdout" ))
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<> command "clean" (info (pure HCClean)
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( progDesc "Clean graphql-engine's metadata to start afresh" ))
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<> command "execute" (info (pure HCExecute)
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( progDesc "Execute a query" ))
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<> command "downgrade" (info (HCDowngrade <$> downgradeOptionsParser)
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(progDesc "Downgrade the GraphQL Engine schema to the specified version"))
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<> command "version" (info (pure HCVersion)
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(progDesc "Prints the version of GraphQL Engine"))
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)
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parseArgs :: EnabledLogTypes impl => IO (HGEOptions impl)
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parseArgs = do
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rawHGEOpts <- execParser opts
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env <- getEnvironment
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let eitherOpts = runWithEnv env $ mkHGEOptions rawHGEOpts
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onLeft eitherOpts $ printErrExit InvalidEnvironmentVariableOptionsError
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where
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opts = info (helper <*> hgeOpts)
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( fullDesc <>
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header "Hasura GraphQL Engine: Realtime GraphQL API over Postgres with access control" <>
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footerDoc (Just mainCmdFooter)
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)
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hgeOpts = HGEOptionsG <$> parsePostgresConnInfo
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<*> parseMetadataDbUrl
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<*> parseHGECommand
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printJSON :: (A.ToJSON a, MonadIO m) => a -> m ()
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printJSON = liftIO . BLC.putStrLn . A.encode
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printYaml :: (A.ToJSON a, MonadIO m) => a -> m ()
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printYaml = liftIO . BC.putStrLn . Y.encode
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mkPGLogger :: Logger Hasura -> Q.PGLogger
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mkPGLogger (Logger logger) (Q.PLERetryMsg msg) =
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logger $ PGLog LevelWarn msg
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-- | Context required for all graphql-engine CLI commands
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data GlobalCtx
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= GlobalCtx
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{ _gcHttpManager :: !HTTP.Manager
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, _gcMetadataDbConnInfo :: !Q.ConnInfo
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, _gcDefaultPostgresConnInfo :: !(Maybe (UrlConf, Q.ConnInfo), Maybe Int)
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-- ^ --database-url option, @'UrlConf' is required to construct default source configuration
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-- and optional retries
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}
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initGlobalCtx
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:: (MonadIO m)
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=> Env.Environment
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-> Maybe String
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-- ^ the metadata DB URL
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-> PostgresConnInfo (Maybe UrlConf)
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-- ^ the user's DB URL
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-> m GlobalCtx
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initGlobalCtx env metadataDbUrl defaultPgConnInfo = do
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httpManager <- liftIO $ HTTP.newManager HTTP.tlsManagerSettings
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let PostgresConnInfo dbUrlConf maybeRetries = defaultPgConnInfo
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mkConnInfoFromSource dbUrl = do
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resolvePostgresConnInfo env dbUrl maybeRetries
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mkConnInfoFromMDb mdbUrl =
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let retries = fromMaybe 1 maybeRetries
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in (Q.ConnInfo retries . Q.CDDatabaseURI . txtToBs . T.pack) mdbUrl
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mkGlobalCtx mdbConnInfo sourceConnInfo =
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pure $ GlobalCtx httpManager mdbConnInfo (sourceConnInfo, maybeRetries)
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case (metadataDbUrl, dbUrlConf) of
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(Nothing, Nothing) ->
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printErrExit InvalidDatabaseConnectionParamsError
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"Fatal Error: Either of --metadata-database-url or --database-url option expected"
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-- If no metadata storage specified consider use default database as
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-- metadata storage
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(Nothing, Just dbUrl) -> do
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connInfo <- mkConnInfoFromSource dbUrl
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mkGlobalCtx connInfo $ Just (dbUrl, connInfo)
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(Just mdUrl, Nothing) -> do
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let mdConnInfo = mkConnInfoFromMDb mdUrl
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mkGlobalCtx mdConnInfo Nothing
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(Just mdUrl, Just dbUrl) -> do
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srcConnInfo <- mkConnInfoFromSource dbUrl
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let mdConnInfo = mkConnInfoFromMDb mdUrl
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mkGlobalCtx mdConnInfo (Just (dbUrl, srcConnInfo))
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-- | Context required for the 'serve' CLI command.
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data ServeCtx
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= ServeCtx
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{ _scHttpManager :: !HTTP.Manager
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, _scInstanceId :: !InstanceId
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, _scLoggers :: !Loggers
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, _scMetadataDbPool :: !Q.PGPool
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, _scShutdownLatch :: !ShutdownLatch
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, _scSchemaCache :: !RebuildableSchemaCache
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, _scSchemaCacheRef :: !SchemaCacheRef
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, _scMetaVersionRef :: !(STM.TMVar MetadataResourceVersion)
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}
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-- | Collection of the LoggerCtx, the regular Logger and the PGLogger
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-- TODO (from master): better naming?
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data Loggers
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= Loggers
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{ _lsLoggerCtx :: !(LoggerCtx Hasura)
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, _lsLogger :: !(Logger Hasura)
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, _lsPgLogger :: !Q.PGLogger
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}
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-- | An application with Postgres database as a metadata storage
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newtype PGMetadataStorageApp a
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= PGMetadataStorageApp {runPGMetadataStorageApp :: (Q.PGPool, Q.PGLogger) -> IO a}
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deriving ( Functor, Applicative, Monad
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, MonadIO, MonadBase IO, MonadBaseControl IO
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, MonadCatch, MonadThrow, MonadMask
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, MonadUnique, MonadReader (Q.PGPool, Q.PGLogger)
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) via (ReaderT (Q.PGPool, Q.PGLogger) IO)
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resolvePostgresConnInfo
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:: (MonadIO m) => Env.Environment -> UrlConf -> Maybe Int -> m Q.ConnInfo
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resolvePostgresConnInfo env dbUrlConf maybeRetries = do
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dbUrlText <-
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runExcept (resolveUrlConf env dbUrlConf) `onLeft` \err ->
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liftIO (printErrExit InvalidDatabaseConnectionParamsError (BLC.unpack $ A.encode err))
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pure $ Q.ConnInfo retries $ Q.CDDatabaseURI $ txtToBs dbUrlText
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where
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retries = fromMaybe 1 maybeRetries
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-- | Initializes or migrates the catalog and returns the context required to start the server.
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initialiseServeCtx
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:: (HasVersion, C.ForkableMonadIO m, MonadCatch m)
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=> Env.Environment
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-> GlobalCtx
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-> ServeOptions Hasura
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-> ManagedT m ServeCtx
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initialiseServeCtx env GlobalCtx{..} so@ServeOptions{..} = do
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instanceId <- liftIO generateInstanceId
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latch <- liftIO newShutdownLatch
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loggers@(Loggers loggerCtx logger pgLogger) <- mkLoggers soEnabledLogTypes soLogLevel
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-- log serve options
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unLogger logger $ serveOptsToLog so
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-- log postgres connection info
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unLogger logger $ connInfoToLog _gcMetadataDbConnInfo
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metadataDbPool <- liftIO $ Q.initPGPool _gcMetadataDbConnInfo soConnParams pgLogger
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let maybeDefaultSourceConfig = fst _gcDefaultPostgresConnInfo <&> \(dbUrlConf, _) ->
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let connSettings = PostgresPoolSettings
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{ _ppsMaxConnections = Just $ Q.cpConns soConnParams
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, _ppsIdleTimeout = Just $ Q.cpIdleTime soConnParams
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, _ppsRetries = snd _gcDefaultPostgresConnInfo <|> Just 1
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, _ppsPoolTimeout = Q.cpTimeout soConnParams
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, _ppsConnectionLifetime = Q.cpMbLifetime soConnParams
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}
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sourceConnInfo = PostgresSourceConnInfo dbUrlConf (Just connSettings) (Q.cpAllowPrepare soConnParams) soTxIso Nothing
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in PostgresConnConfiguration sourceConnInfo Nothing
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sqlGenCtx = SQLGenCtx soStringifyNum soDangerousBooleanCollapse
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let serverConfigCtx =
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ServerConfigCtx soInferFunctionPermissions soEnableRemoteSchemaPermissions
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sqlGenCtx soEnableMaintenanceMode soExperimentalFeatures
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(rebuildableSchemaCache, _) <-
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lift . flip onException (flushLogger loggerCtx) $
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migrateCatalogSchema env logger metadataDbPool maybeDefaultSourceConfig _gcHttpManager
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serverConfigCtx (mkPgSourceResolver pgLogger)
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-- Start a background thread for listening schema sync events from other server instances,
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metaVersionRef <- liftIO $ STM.newEmptyTMVarIO
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-- An interval of 0 indicates that no schema sync is required
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case soSchemaPollInterval of
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Skip -> unLogger logger $ mkGenericStrLog LevelInfo "schema-sync" "Schema sync disabled"
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Interval i -> do
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unLogger logger $ mkGenericStrLog LevelInfo "schema-sync" ("Schema sync enabled. Polling at " <> show i)
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void $ startSchemaSyncListenerThread logger metadataDbPool instanceId i metaVersionRef
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-- See Note [Temporarily disabling query plan caching]
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-- (planCache, schemaCacheRef) <- initialiseCache
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schemaCacheRef <- initialiseCache rebuildableSchemaCache
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pure $ ServeCtx _gcHttpManager instanceId loggers metadataDbPool latch
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rebuildableSchemaCache schemaCacheRef metaVersionRef
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mkLoggers
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:: (MonadIO m, MonadBaseControl IO m)
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=> HashSet (EngineLogType Hasura)
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-> LogLevel
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-> ManagedT m Loggers
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mkLoggers enabledLogs logLevel = do
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loggerCtx <- mkLoggerCtx (defaultLoggerSettings True logLevel) enabledLogs
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let logger = mkLogger loggerCtx
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pgLogger = mkPGLogger logger
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return $ Loggers loggerCtx logger pgLogger
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-- | helper function to initialize or migrate the @hdb_catalog@ schema (used by pro as well)
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migrateCatalogSchema
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:: (HasVersion, MonadIO m, MonadBaseControl IO m)
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=> Env.Environment -> Logger Hasura -> Q.PGPool -> Maybe (SourceConnConfiguration ('Postgres 'Vanilla))
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-> HTTP.Manager -> ServerConfigCtx
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-> SourceResolver
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-> m (RebuildableSchemaCache, UTCTime)
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migrateCatalogSchema env logger pool defaultSourceConfig
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httpManager serverConfigCtx
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sourceResolver = do
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currentTime <- liftIO Clock.getCurrentTime
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initialiseResult <- runExceptT $ do
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-- TODO: should we allow the migration to happen during maintenance mode?
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-- Allowing this can be a sanity check, to see if the hdb_catalog in the
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-- DB has been set correctly
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(migrationResult, metadata) <-
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Q.runTx pool (Q.Serializable, Just Q.ReadWrite) $
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migrateCatalog defaultSourceConfig (_sccMaintenanceMode serverConfigCtx)
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currentTime
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let cacheBuildParams =
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CacheBuildParams httpManager sourceResolver serverConfigCtx
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buildReason = case getMigratedFrom migrationResult of
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Nothing -> CatalogSync
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Just version ->
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-- Catalog version 43 marks the metadata separation which also drops
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-- the "hdb_views" schema where table event triggers are hosted.
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-- We need to re-create table event trigger procedures in "hdb_catalog"
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-- schema when migration happens from version < 43. Build reason
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-- @'CatalogUpdate' re-creates event triggers in the database.
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if version < 43 then CatalogUpdate else CatalogSync
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schemaCache <- runCacheBuild cacheBuildParams $
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buildRebuildableSchemaCacheWithReason buildReason env metadata
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pure (migrationResult, schemaCache)
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(migrationResult, schemaCache) <-
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initialiseResult `onLeft` \err -> do
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unLogger logger StartupLog
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{ slLogLevel = LevelError
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, slKind = "catalog_migrate"
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, slInfo = A.toJSON err
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}
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liftIO (printErrExit DatabaseMigrationError (BLC.unpack $ A.encode err))
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unLogger logger migrationResult
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pure (schemaCache, currentTime)
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-- | Run a transaction and if an error is encountered, log the error and abort the program
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runTxIO :: Q.PGPool -> Q.TxMode -> Q.TxE QErr a -> IO a
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runTxIO pool isoLevel tx = do
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eVal <- liftIO $ runExceptT $ Q.runTx pool isoLevel tx
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onLeft eVal (printErrJExit DatabaseMigrationError)
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-- | A latch for the graceful shutdown of a server process.
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newtype ShutdownLatch = ShutdownLatch { unShutdownLatch :: C.MVar () }
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-- | Event triggers live in the user's DB and other events
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-- (cron, one-off and async actions)
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-- live in the metadata DB, so we need a way to differentiate the
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-- type of shutdown action
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data ShutdownAction =
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EventTriggerShutdownAction (IO ())
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| MetadataDBShutdownAction (MetadataStorageT IO ())
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newShutdownLatch :: IO ShutdownLatch
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newShutdownLatch = fmap ShutdownLatch C.newEmptyMVar
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-- | Block the current thread, waiting on the latch.
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waitForShutdown :: ShutdownLatch -> IO ()
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waitForShutdown = C.takeMVar . unShutdownLatch
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-- | Initiate a graceful shutdown of the server associated with the provided
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-- latch.
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shutdownGracefully :: ShutdownLatch -> IO ()
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shutdownGracefully = void . flip C.tryPutMVar () . unShutdownLatch
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-- | If an exception is encountered , flush the log buffer and
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-- rethrow If we do not flush the log buffer on exception, then log lines
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-- may be missed
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-- See: https://github.com/hasura/graphql-engine/issues/4772
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flushLogger :: MonadIO m => LoggerCtx impl -> m ()
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flushLogger = liftIO . FL.flushLogStr . _lcLoggerSet
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-- | This function acts as the entrypoint for the graphql-engine webserver.
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--
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-- Note: at the exit of this function, or in case of a graceful server shutdown
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-- (SIGTERM, or more generally, whenever the shutdown latch is set), we need to
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-- make absolutely sure that we clean up any resources which were allocated during
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-- server setup. In the case of a multitenant process, failure to do so can lead to
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-- resource leaks.
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--
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-- To track these resources, we use the ManagedT monad, and attach finalizers at
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-- the same point in the code where we allocate resources. If you fork a new
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-- long-lived thread, or create a connection pool, or allocate any other
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-- long-lived resource, make sure to pair the allocator with its finalizer.
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-- There are plenty of examples throughout the code. For example, see
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-- 'C.forkManagedT'.
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--
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-- Note also: the order in which the finalizers run can be important. Specifically,
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-- we want the finalizers for the logger threads to run last, so that we retain as
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-- many "thread stopping" log messages as possible. The order in which the
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-- finalizers is run is determined by the order in which they are introduced in the
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-- code.
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{- HLINT ignore runHGEServer "Avoid lambda" -}
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runHGEServer
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:: forall m impl
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. ( HasVersion
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, MonadIO m
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, MonadMask m
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, MonadStateless IO m
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, LA.Forall (LA.Pure m)
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, UserAuthentication (Tracing.TraceT m)
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, HttpLog m
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, ConsoleRenderer m
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, MonadMetadataApiAuthorization m
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, MonadGQLExecutionCheck m
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, MonadConfigApiHandler m
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, MonadQueryLog m
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, WS.MonadWSLog m
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, MonadExecuteQuery m
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, Tracing.HasReporter m
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, HasResourceLimits m
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, MonadMetadataStorage (MetadataStorageT m)
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, MonadResolveSource m
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)
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=> (ServerCtx -> Spock.SpockT m ())
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-> Env.Environment
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-> ServeOptions impl
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-> ServeCtx
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-- and mutations
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-> UTCTime
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-- ^ start time
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-> Maybe EL.LiveQueryPostPollHook
|
|
-> ServerMetrics
|
|
-> EKG.Store
|
|
-> ManagedT m ()
|
|
runHGEServer setupHook env ServeOptions{..} ServeCtx{..} initTime postPollHook serverMetrics ekgStore = do
|
|
-- Comment this to enable expensive assertions from "GHC.AssertNF". These
|
|
-- will log lines to STDOUT containing "not in normal form". In the future we
|
|
-- could try to integrate this into our tests. For now this is a development
|
|
-- tool.
|
|
--
|
|
-- NOTE: be sure to compile WITHOUT code coverage, for this to work properly.
|
|
#ifndef PROFILING
|
|
liftIO disableAssertNF
|
|
#endif
|
|
|
|
let sqlGenCtx = SQLGenCtx soStringifyNum soDangerousBooleanCollapse
|
|
Loggers loggerCtx logger _ = _scLoggers
|
|
--SchemaSyncCtx{..} = _scSchemaSyncCtx
|
|
|
|
authModeRes <- runExceptT $ setupAuthMode soAdminSecret soAuthHook soJwtSecret soUnAuthRole
|
|
_scHttpManager logger
|
|
|
|
authMode <- onLeft authModeRes (printErrExit AuthConfigurationError . T.unpack)
|
|
|
|
HasuraApp app cacheRef actionSubState stopWsServer <- lift $ flip onException (flushLogger loggerCtx) $
|
|
mkWaiApp setupHook env
|
|
logger
|
|
sqlGenCtx
|
|
soEnableAllowlist
|
|
_scHttpManager
|
|
authMode
|
|
soCorsConfig
|
|
soEnableConsole
|
|
soConsoleAssetsDir
|
|
soEnableTelemetry
|
|
_scInstanceId
|
|
soEnabledAPIs
|
|
soLiveQueryOpts
|
|
soPlanCacheOptions
|
|
soResponseInternalErrorsConfig
|
|
postPollHook
|
|
_scSchemaCacheRef
|
|
ekgStore
|
|
serverMetrics
|
|
soEnableRemoteSchemaPermissions
|
|
soInferFunctionPermissions
|
|
soConnectionOptions
|
|
soWebsocketKeepAlive
|
|
soEnableMaintenanceMode
|
|
soExperimentalFeatures
|
|
|
|
let serverConfigCtx =
|
|
ServerConfigCtx soInferFunctionPermissions
|
|
soEnableRemoteSchemaPermissions
|
|
sqlGenCtx
|
|
soEnableMaintenanceMode
|
|
soExperimentalFeatures
|
|
|
|
-- Log Warning if deprecated environment variables are used
|
|
sources <- scSources <$> liftIO (getSCFromRef cacheRef)
|
|
liftIO $ logDeprecatedEnvVars logger env sources
|
|
|
|
-- log inconsistent schema objects
|
|
inconsObjs <- scInconsistentObjs <$> liftIO (getSCFromRef cacheRef)
|
|
liftIO $ logInconsObjs logger inconsObjs
|
|
|
|
-- Start a background thread for processing schema sync event present in the '_sscSyncEventRef'
|
|
_ <- startSchemaSyncProcessorThread logger _scHttpManager _scMetaVersionRef
|
|
cacheRef _scInstanceId
|
|
serverConfigCtx
|
|
|
|
let
|
|
maxEvThrds = fromMaybe defaultMaxEventThreads soEventsHttpPoolSize
|
|
fetchI = milliseconds $ fromMaybe (Milliseconds defaultFetchInterval) soEventsFetchInterval
|
|
logEnvHeaders = soLogHeadersFromEnv
|
|
allPgSources = mapMaybe (unsafeSourceConfiguration @('Postgres 'Vanilla)) $ HM.elems $ scSources $ lastBuiltSchemaCache _scSchemaCache
|
|
eventResponseLogBehaviour = if soInDevelopmentMode then LogEntireResponse else LogSanitisedResponse
|
|
|
|
lockedEventsCtx <-
|
|
liftIO $
|
|
LockedEventsCtx
|
|
<$> STM.newTVarIO mempty
|
|
<*> STM.newTVarIO mempty
|
|
<*> STM.newTVarIO mempty
|
|
<*> STM.newTVarIO mempty
|
|
|
|
unless (getNonNegativeInt soEventsFetchBatchSize == 0 || soEventsFetchInterval == Just 0) $ do
|
|
-- Don't start the events poller thread when fetchBatchSize or fetchInterval is 0
|
|
-- prepare event triggers data
|
|
eventEngineCtx <- liftIO $ atomically $ initEventEngineCtx maxEvThrds fetchI soEventsFetchBatchSize
|
|
let eventsGracefulShutdownAction =
|
|
waitForProcessingAction logger
|
|
"event_triggers"
|
|
(length <$> readTVarIO (leEvents lockedEventsCtx))
|
|
(EventTriggerShutdownAction (shutdownEventTriggerEvents allPgSources logger lockedEventsCtx))
|
|
soGracefulShutdownTimeout
|
|
unLogger logger $ mkGenericStrLog LevelInfo "event_triggers" "starting workers"
|
|
void $
|
|
C.forkManagedTWithGracefulShutdown
|
|
"processEventQueue"
|
|
logger
|
|
(C.ThreadShutdown (liftIO eventsGracefulShutdownAction)) $
|
|
processEventQueue logger
|
|
logEnvHeaders
|
|
_scHttpManager
|
|
(getSCFromRef cacheRef)
|
|
eventEngineCtx
|
|
lockedEventsCtx
|
|
serverMetrics
|
|
soEnableMaintenanceMode
|
|
eventResponseLogBehaviour
|
|
|
|
|
|
-- start a background thread to handle async actions
|
|
case soAsyncActionsFetchInterval of
|
|
Skip -> pure () -- Don't start the poller thread
|
|
Interval sleepTime -> do
|
|
let label = "asyncActionsProcessor"
|
|
asyncActionGracefulShutdownAction =
|
|
(liftWithStateless \lowerIO ->
|
|
(waitForProcessingAction logger
|
|
"async_actions"
|
|
(length <$> readTVarIO (leActionEvents lockedEventsCtx))
|
|
(MetadataDBShutdownAction (hoist lowerIO (shutdownAsyncActions lockedEventsCtx)))
|
|
soGracefulShutdownTimeout))
|
|
|
|
void $ C.forkManagedTWithGracefulShutdown label
|
|
logger
|
|
(C.ThreadShutdown asyncActionGracefulShutdownAction) $
|
|
asyncActionsProcessor env logger (_scrCache cacheRef)
|
|
(leActionEvents lockedEventsCtx) _scHttpManager sleepTime
|
|
|
|
|
|
-- start a background thread to handle async action live queries
|
|
_asyncActionsSubThread <- C.forkManagedT "asyncActionSubscriptionsProcessor" logger $
|
|
asyncActionSubscriptionsProcessor actionSubState
|
|
|
|
-- start a background thread to create new cron events
|
|
_cronEventsThread <- C.forkManagedT "runCronEventsGenerator" logger $
|
|
runCronEventsGenerator logger (getSCFromRef cacheRef)
|
|
|
|
-- prepare scheduled triggers
|
|
lift $ prepareScheduledEvents logger
|
|
|
|
-- start a background thread to deliver the scheduled events
|
|
_scheduledEventsThread <- do
|
|
let scheduledEventsGracefulShutdownAction =
|
|
(liftWithStateless \lowerIO ->
|
|
(waitForProcessingAction logger
|
|
"scheduled_events"
|
|
(getProcessingScheduledEventsCount lockedEventsCtx)
|
|
(MetadataDBShutdownAction (hoist lowerIO unlockAllLockedScheduledEvents))
|
|
soGracefulShutdownTimeout))
|
|
|
|
C.forkManagedTWithGracefulShutdown "processScheduledTriggers"
|
|
logger
|
|
(C.ThreadShutdown scheduledEventsGracefulShutdownAction) $
|
|
processScheduledTriggers env logger logEnvHeaders _scHttpManager
|
|
(getSCFromRef cacheRef) lockedEventsCtx
|
|
eventResponseLogBehaviour
|
|
|
|
|
|
-- start a background thread to check for updates
|
|
_updateThread <- C.forkManagedT "checkForUpdates" logger $
|
|
liftIO $ checkForUpdates loggerCtx _scHttpManager
|
|
|
|
-- start a background thread for telemetry
|
|
dbUidE <- runMetadataStorageT getDatabaseUid
|
|
_telemetryThread <- if soEnableTelemetry
|
|
then do
|
|
lift . unLogger logger $ mkGenericStrLog LevelInfo "telemetry" telemetryNotice
|
|
|
|
(dbId, pgVersion) <- liftIO $ runTxIO _scMetadataDbPool (Q.ReadCommitted, Nothing) $
|
|
(,) <$> liftEither dbUidE <*> getPgVersion
|
|
|
|
telemetryThread <- C.forkManagedT "runTelemetry" logger $
|
|
liftIO $ runTelemetry logger _scHttpManager (getSCFromRef cacheRef) dbId _scInstanceId pgVersion
|
|
return $ Just telemetryThread
|
|
else return Nothing
|
|
|
|
finishTime <- liftIO Clock.getCurrentTime
|
|
let apiInitTime = realToFrac $ Clock.diffUTCTime finishTime initTime
|
|
unLogger logger $
|
|
mkGenericLog LevelInfo "server" $ StartupTimeInfo "starting API server" apiInitTime
|
|
|
|
let setForkIOWithMetrics :: Warp.Settings -> Warp.Settings
|
|
setForkIOWithMetrics = Warp.setFork \f -> do
|
|
void $ C.forkIOWithUnmask (\unmask ->
|
|
bracket_
|
|
(EKG.Gauge.inc $ smWarpThreads serverMetrics)
|
|
(EKG.Gauge.dec $ smWarpThreads serverMetrics)
|
|
(f unmask))
|
|
|
|
let shutdownHandler closeSocket = LA.link =<< LA.async do
|
|
waitForShutdown _scShutdownLatch
|
|
unLogger logger $ mkGenericStrLog LevelInfo "server" "gracefully shutting down server"
|
|
closeSocket
|
|
|
|
let warpSettings = Warp.setPort soPort
|
|
. Warp.setHost soHost
|
|
. Warp.setGracefulShutdownTimeout (Just 30) -- 30s graceful shutdown
|
|
. Warp.setInstallShutdownHandler shutdownHandler
|
|
. setForkIOWithMetrics
|
|
$ Warp.defaultSettings
|
|
|
|
-- Here we block until the shutdown latch 'MVar' is filled, and then
|
|
-- shut down the server. Once this blocking call returns, we'll tidy up
|
|
-- any resources using the finalizers attached using 'ManagedT' above.
|
|
-- Structuring things using the shutdown latch in this way lets us decide
|
|
-- elsewhere exactly how we want to control shutdown.
|
|
liftIO $ Warp.runSettings warpSettings app `LE.finally` do
|
|
-- These cleanup actions are not directly associated with any
|
|
-- resource, but we still need to make sure we clean them up here.
|
|
stopWsServer
|
|
|
|
where
|
|
-- | prepareScheduledEvents is a function to unlock all the scheduled trigger
|
|
-- events that are locked and unprocessed, which is called while hasura is
|
|
-- started.
|
|
--
|
|
-- Locked and unprocessed events can occur in 2 ways
|
|
-- 1.
|
|
-- Hasura's shutdown was not graceful in which all the fetched
|
|
-- events will remain locked and unprocessed(TODO: clean shutdown)
|
|
-- state.
|
|
-- 2.
|
|
-- There is another hasura instance which is processing events and
|
|
-- it will lock events to process them.
|
|
-- So, unlocking all the locked events might re-deliver an event(due to #2).
|
|
prepareScheduledEvents (Logger logger) = do
|
|
liftIO $ logger $ mkGenericStrLog LevelInfo "scheduled_triggers" "preparing data"
|
|
res <- runMetadataStorageT unlockAllLockedScheduledEvents
|
|
onLeft res $ printErrJExit EventSubSystemError
|
|
|
|
getProcessingScheduledEventsCount :: LockedEventsCtx -> IO Int
|
|
getProcessingScheduledEventsCount LockedEventsCtx {..} = do
|
|
processingCronEvents <- readTVarIO leCronEvents
|
|
processingOneOffEvents <- readTVarIO leOneOffEvents
|
|
return $ length processingOneOffEvents + length processingCronEvents
|
|
|
|
-- | shutdownEventTriggerEvents will be triggered when a graceful shutdown has been inititiated, it will
|
|
-- get the locked events from the event engine context and the scheduled event engine context
|
|
-- then it will unlock all those events.
|
|
-- It may happen that an event may be processed more than one time, an event that has been already
|
|
-- processed but not been marked as delivered in the db will be unlocked by `shutdownEventTriggerEvents`
|
|
-- and will be processed when the events are proccessed next time.
|
|
shutdownEventTriggerEvents
|
|
:: [SourceConfig ('Postgres 'Vanilla)]
|
|
-> Logger Hasura
|
|
-> LockedEventsCtx
|
|
-> IO ()
|
|
shutdownEventTriggerEvents pgSources hasuraLogger@(Logger logger) LockedEventsCtx {..} = do
|
|
-- TODO: is this correct?
|
|
-- event triggers should be tied to the life cycle of a source
|
|
forM_ pgSources $ \pgSource -> do
|
|
logger $ mkGenericStrLog LevelInfo "event_triggers" "unlocking events that are locked by the HGE"
|
|
let unlockEvents' l = MetadataStorageT $ runLazyTx (_pscExecCtx pgSource) Q.ReadWrite $ liftTx $ unlockEvents l
|
|
unlockEventsForShutdown hasuraLogger "event_triggers" "" unlockEvents' leEvents
|
|
|
|
shutdownAsyncActions
|
|
:: LockedEventsCtx
|
|
-> MetadataStorageT m ()
|
|
shutdownAsyncActions lockedEventsCtx = do
|
|
lockedActionEvents <- liftIO $ readTVarIO $ leActionEvents lockedEventsCtx
|
|
setProcessingActionLogsToPending (LockedActionIdArray $ toList lockedActionEvents)
|
|
|
|
unlockEventsForShutdown
|
|
:: Logger Hasura
|
|
-> Text -- ^ trigger type
|
|
-> Text -- ^ event type
|
|
-> ([eventId] -> MetadataStorageT IO Int)
|
|
-> TVar (Set.Set eventId)
|
|
-> IO ()
|
|
unlockEventsForShutdown (Logger logger) triggerType eventType doUnlock lockedIdsVar = do
|
|
logger $ mkGenericStrLog LevelInfo "scheduled_triggers" "unlocking scheduled events that are locked by the HGE"
|
|
lockedIds <- readTVarIO lockedIdsVar
|
|
unless (Set.null lockedIds) $ do
|
|
result <- runMetadataStorageT $ doUnlock $ toList lockedIds
|
|
case result of
|
|
Left err -> logger $ mkGenericStrLog LevelWarn triggerType $
|
|
"Error while unlocking " ++ T.unpack eventType ++ " events: " ++ show err
|
|
Right count -> logger $ mkGenericStrLog LevelInfo triggerType $
|
|
show count ++ " " ++ T.unpack eventType ++ " events successfully unlocked"
|
|
|
|
-- This function is a helper function to do couple of things:
|
|
--
|
|
-- 1. When the value of the `graceful-shutdown-timeout` > 0, we poll
|
|
-- the in-flight events queue we maintain using the `processingEventsCountAction`
|
|
-- number of in-flight processing events, in case of actions it is the
|
|
-- actions which are in 'processing' state and in scheduled events
|
|
-- it is the events which are in 'locked' state. The in-flight events queue is polled
|
|
-- every 5 seconds until either the graceful shutdown time is exhausted
|
|
-- or the number of in-flight processing events is 0.
|
|
-- 2. After step 1, we unlock all the events which were attempted to process by the current
|
|
-- graphql-engine instance that are still in the processing
|
|
-- state. In actions, it means to set the status of such actions to 'pending'
|
|
-- and in scheduled events, the status will be set to 'unlocked'.
|
|
waitForProcessingAction
|
|
:: Logger Hasura
|
|
-> String
|
|
-> IO Int
|
|
-> ShutdownAction
|
|
-> Seconds
|
|
-> IO ()
|
|
waitForProcessingAction l@(Logger logger) actionType processingEventsCountAction' shutdownAction maxTimeout
|
|
| maxTimeout <= 0 = do
|
|
case shutdownAction of
|
|
EventTriggerShutdownAction userDBShutdownAction -> userDBShutdownAction
|
|
MetadataDBShutdownAction metadataDBShutdownAction ->
|
|
runMetadataStorageT metadataDBShutdownAction >>= \case
|
|
Left err ->
|
|
logger $ mkGenericStrLog LevelWarn (T.pack actionType) $
|
|
"Error while unlocking the processing " <>
|
|
show actionType <> " err - "<> show err
|
|
Right () -> pure ()
|
|
| otherwise = do
|
|
processingEventsCount <- processingEventsCountAction'
|
|
if (processingEventsCount == 0)
|
|
then logger $ mkGenericStrLog LevelInfo (T.pack actionType) $
|
|
"All in-flight events have finished processing"
|
|
else
|
|
unless (processingEventsCount == 0) $ do
|
|
C.sleep (5) -- sleep for 5 seconds and then repeat
|
|
waitForProcessingAction l actionType processingEventsCountAction' shutdownAction (maxTimeout - (Seconds 5))
|
|
|
|
runAsAdmin
|
|
:: HTTP.Manager
|
|
-> ServerConfigCtx
|
|
-> RunT m a
|
|
-> m (Either QErr a)
|
|
runAsAdmin httpManager serverConfigCtx m = do
|
|
let runCtx = RunCtx adminUserInfo httpManager serverConfigCtx
|
|
runExceptT $ peelRun runCtx m
|
|
|
|
execQuery
|
|
:: ( HasVersion
|
|
, CacheRWM m
|
|
, MonadIO m
|
|
, MonadBaseControl IO m
|
|
, MonadUnique m
|
|
, HasHttpManagerM m
|
|
, UserInfoM m
|
|
, Tracing.MonadTrace m
|
|
, HasServerConfigCtx m
|
|
, MetadataM m
|
|
, MonadMetadataStorageQueryAPI m
|
|
)
|
|
=> Env.Environment
|
|
-> BLC.ByteString
|
|
-> m BLC.ByteString
|
|
execQuery env queryBs = do
|
|
query <- case A.decode queryBs of
|
|
Just jVal -> decodeValue jVal
|
|
Nothing -> throw400 InvalidJSON "invalid json"
|
|
buildSchemaCacheStrict
|
|
encJToLBS <$> runQueryM env query
|
|
|
|
instance Tracing.HasReporter PGMetadataStorageApp
|
|
|
|
instance HasResourceLimits PGMetadataStorageApp where
|
|
askResourceLimits = pure (ResourceLimits id)
|
|
|
|
instance HttpLog PGMetadataStorageApp where
|
|
|
|
type HTTPLoggingMetadata PGMetadataStorageApp = ()
|
|
|
|
buildHTTPLoggingMetadata _ = ()
|
|
|
|
logHttpError logger userInfoM reqId waiReq req qErr headers =
|
|
unLogger logger $ mkHttpLog $
|
|
mkHttpErrorLogContext userInfoM reqId waiReq req qErr Nothing Nothing headers
|
|
|
|
logHttpSuccess logger userInfoM reqId waiReq _reqBody _response compressedResponse qTime cType headers () =
|
|
unLogger logger $ mkHttpLog $
|
|
mkHttpAccessLogContext userInfoM reqId waiReq compressedResponse qTime cType headers
|
|
|
|
instance MonadExecuteQuery PGMetadataStorageApp where
|
|
cacheLookup _ _ _ = pure ([], Nothing)
|
|
cacheStore _ _ = pure ()
|
|
|
|
instance UserAuthentication (Tracing.TraceT PGMetadataStorageApp) where
|
|
resolveUserInfo logger manager headers authMode reqs =
|
|
runExceptT $ getUserInfoWithExpTime logger manager headers authMode reqs
|
|
|
|
accessDeniedErrMsg :: Text
|
|
accessDeniedErrMsg =
|
|
"restricted access : admin only"
|
|
|
|
instance MonadMetadataApiAuthorization PGMetadataStorageApp where
|
|
authorizeV1QueryApi query handlerCtx = runExceptT do
|
|
let currRole = _uiRole $ hcUser handlerCtx
|
|
when (requiresAdmin query && currRole /= adminRoleName) $
|
|
withPathK "args" $ throw400 AccessDenied accessDeniedErrMsg
|
|
|
|
authorizeV1MetadataApi _ handlerCtx = runExceptT do
|
|
let currRole = _uiRole $ hcUser handlerCtx
|
|
when (currRole /= adminRoleName) $
|
|
withPathK "args" $ throw400 AccessDenied accessDeniedErrMsg
|
|
|
|
authorizeV2QueryApi _ handlerCtx = runExceptT do
|
|
let currRole = _uiRole $ hcUser handlerCtx
|
|
when (currRole /= adminRoleName) $
|
|
withPathK "args" $ throw400 AccessDenied accessDeniedErrMsg
|
|
|
|
instance ConsoleRenderer PGMetadataStorageApp where
|
|
renderConsole path authMode enableTelemetry consoleAssetsDir =
|
|
return $ mkConsoleHTML path authMode enableTelemetry consoleAssetsDir
|
|
|
|
instance MonadGQLExecutionCheck PGMetadataStorageApp where
|
|
checkGQLExecution userInfo _ enableAL sc query = runExceptT $ do
|
|
req <- toParsed query
|
|
checkQueryInAllowlist enableAL userInfo req sc
|
|
return req
|
|
|
|
executeIntrospection _ introspectionQuery _ =
|
|
pure $ Right $ ExecStepRaw introspectionQuery
|
|
|
|
instance MonadConfigApiHandler PGMetadataStorageApp where
|
|
runConfigApiHandler = configApiGetHandler
|
|
|
|
instance MonadQueryLog PGMetadataStorageApp where
|
|
logQueryLog = unLogger
|
|
|
|
instance WS.MonadWSLog PGMetadataStorageApp where
|
|
logWSLog = unLogger
|
|
|
|
instance MonadResolveSource PGMetadataStorageApp where
|
|
getSourceResolver = mkPgSourceResolver <$> asks snd
|
|
|
|
runInSeparateTx :: Q.TxE QErr a -> MetadataStorageT PGMetadataStorageApp a
|
|
runInSeparateTx tx = do
|
|
pool <- lift $ asks fst
|
|
liftEitherM $ liftIO $ runExceptT $ Q.runTx pool (Q.RepeatableRead, Nothing) tx
|
|
|
|
notifySchemaCacheSyncTx :: MetadataResourceVersion -> InstanceId -> CacheInvalidations -> Q.TxE QErr ()
|
|
notifySchemaCacheSyncTx (MetadataResourceVersion resourceVersion) instanceId invalidations = do
|
|
Q.Discard () <- Q.withQE defaultTxErrorHandler [Q.sql|
|
|
INSERT INTO hdb_catalog.hdb_schema_notifications(id, notification, resource_version, instance_id)
|
|
VALUES (1, $1::json, $2, $3::uuid)
|
|
ON CONFLICT (id) DO UPDATE SET
|
|
notification = $1::json,
|
|
resource_version = $2,
|
|
instance_id = $3::uuid
|
|
|] (Q.AltJ invalidations, resourceVersion, instanceId) True
|
|
pure ()
|
|
|
|
getCatalogStateTx :: Q.TxE QErr CatalogState
|
|
getCatalogStateTx =
|
|
mkCatalogState . Q.getRow <$> Q.withQE defaultTxErrorHandler [Q.sql|
|
|
SELECT hasura_uuid::text, cli_state::json, console_state::json
|
|
FROM hdb_catalog.hdb_version
|
|
|] () False
|
|
where
|
|
mkCatalogState (dbId, Q.AltJ cliState, Q.AltJ consoleState) =
|
|
CatalogState dbId cliState consoleState
|
|
|
|
setCatalogStateTx :: CatalogStateType -> A.Value -> Q.TxE QErr ()
|
|
setCatalogStateTx stateTy stateValue =
|
|
case stateTy of
|
|
CSTCli ->
|
|
Q.unitQE defaultTxErrorHandler [Q.sql|
|
|
UPDATE hdb_catalog.hdb_version
|
|
SET cli_state = $1
|
|
|] (Identity $ Q.AltJ stateValue) False
|
|
CSTConsole ->
|
|
Q.unitQE defaultTxErrorHandler [Q.sql|
|
|
UPDATE hdb_catalog.hdb_version
|
|
SET console_state = $1
|
|
|] (Identity $ Q.AltJ stateValue) False
|
|
|
|
|
|
-- | Each of the function in the type class is executed in a totally separate transaction.
|
|
--
|
|
-- To learn more about why the instance is derived as following, see Note [Generic MetadataStorageT transformer]
|
|
instance MonadMetadataStorage (MetadataStorageT PGMetadataStorageApp) where
|
|
|
|
fetchMetadataResourceVersion = runInSeparateTx fetchMetadataResourceVersionFromCatalog
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fetchMetadata = runInSeparateTx fetchMetadataAndResourceVersionFromCatalog
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fetchMetadataNotifications a b = runInSeparateTx $ fetchMetadataNotificationsFromCatalog a b
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|
setMetadata r = runInSeparateTx . setMetadataInCatalog (Just r)
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|
notifySchemaCacheSync a b c = runInSeparateTx $ notifySchemaCacheSyncTx a b c
|
|
getCatalogState = runInSeparateTx getCatalogStateTx
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|
setCatalogState a b = runInSeparateTx $ setCatalogStateTx a b
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|
|
|
getDatabaseUid = runInSeparateTx getDbId
|
|
checkMetadataStorageHealth = lift (asks fst) >>= checkDbConnection
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|
|
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getDeprivedCronTriggerStats = runInSeparateTx getDeprivedCronTriggerStatsTx
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|
getScheduledEventsForDelivery = runInSeparateTx getScheduledEventsForDeliveryTx
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|
insertScheduledEvent = runInSeparateTx . insertScheduledEventTx
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|
insertScheduledEventInvocation a b = runInSeparateTx $ insertInvocationTx a b
|
|
setScheduledEventOp a b c = runInSeparateTx $ setScheduledEventOpTx a b c
|
|
unlockScheduledEvents a b = runInSeparateTx $ unlockScheduledEventsTx a b
|
|
unlockAllLockedScheduledEvents = runInSeparateTx unlockAllLockedScheduledEventsTx
|
|
clearFutureCronEvents = runInSeparateTx . dropFutureCronEventsTx
|
|
getOneOffScheduledEvents a b = runInSeparateTx $ getOneOffScheduledEventsTx a b
|
|
getCronEvents a b c = runInSeparateTx $ getCronEventsTx a b c
|
|
getInvocations a b = runInSeparateTx $ getInvocationsTx a b
|
|
deleteScheduledEvent a b = runInSeparateTx $ deleteScheduledEventTx a b
|
|
|
|
insertAction a b c d = runInSeparateTx $ insertActionTx a b c d
|
|
fetchUndeliveredActionEvents = runInSeparateTx fetchUndeliveredActionEventsTx
|
|
setActionStatus a b = runInSeparateTx $ setActionStatusTx a b
|
|
fetchActionResponse = runInSeparateTx . fetchActionResponseTx
|
|
clearActionData = runInSeparateTx . clearActionDataTx
|
|
setProcessingActionLogsToPending = runInSeparateTx . setProcessingActionLogsToPendingTx
|
|
|
|
--- helper functions ---
|
|
|
|
mkConsoleHTML :: HasVersion => Text -> AuthMode -> Bool -> Maybe Text -> Either String Text
|
|
mkConsoleHTML path authMode enableTelemetry consoleAssetsDir =
|
|
renderHtmlTemplate consoleTmplt $
|
|
-- variables required to render the template
|
|
A.object [ "isAdminSecretSet" A..= isAdminSecretSet authMode
|
|
, "consolePath" A..= consolePath
|
|
, "enableTelemetry" A..= boolToText enableTelemetry
|
|
, "cdnAssets" A..= boolToText (isNothing consoleAssetsDir)
|
|
, "assetsVersion" A..= consoleAssetsVersion
|
|
, "serverVersion" A..= currentVersion
|
|
]
|
|
where
|
|
consolePath = case path of
|
|
"" -> "/console"
|
|
r -> "/console/" <> r
|
|
|
|
consoleTmplt = $(makeRelativeToProject "src-rsr/console.html" >>= M.embedSingleTemplate)
|
|
|
|
telemetryNotice :: String
|
|
telemetryNotice =
|
|
"Help us improve Hasura! The graphql-engine server collects anonymized "
|
|
<> "usage stats which allows us to keep improving Hasura at warp speed. "
|
|
<> "To read more or opt-out, visit https://hasura.io/docs/latest/graphql/core/guides/telemetry.html"
|