graphql-engine/server/src-lib/Hasura/Server/Init/Arg/Command/Downgrade.hs
Samir Talwar 342391f39d Upgrade Ormolu to v0.5.
This upgrades the version of Ormolu required by the HGE repository to v0.5.0.1, and reformats all code accordingly.

Ormolu v0.5 reformats code that uses infix operators. This is mostly useful, adding newlines and indentation to make it clear which operators are applied first, but in some cases, it's unpleasant. To make this easier on the eyes, I had to do the following:

* Add a few fixity declarations (search for `infix`)
* Add parentheses to make precedence clear, allowing Ormolu to keep everything on one line
* Rename `relevantEq` to `(==~)` in #6651 and set it to `infix 4`
* Add a few _.ormolu_ files (thanks to @hallettj for helping me get started), mostly for Autodocodec operators that don't have explicit fixity declarations

In general, I think these changes are quite reasonable. They mostly affect indentation.

PR-URL: https://github.com/hasura/graphql-engine-mono/pull/6675
GitOrigin-RevId: cd47d87f1d089fb0bc9dcbbe7798dbceedcd7d83
2022-11-02 20:55:13 +00:00

58 lines
1.9 KiB
Haskell

{-# LANGUAGE TemplateHaskell #-}
-- | The Downgrade Command Parser
module Hasura.Server.Init.Arg.Command.Downgrade
( downgradeCommandParser,
)
where
--------------------------------------------------------------------------------
import Data.FileEmbed qualified as Embed
import Data.String qualified as String
import Hasura.Prelude
import Hasura.Server.Init.Config qualified as Config
import Language.Haskell.TH.Syntax qualified as TH
import Options.Applicative qualified as Opt
--------------------------------------------------------------------------------
-- | This implements the mapping between application versions
-- and catalog schema versions.
downgradeShortcuts :: [(String, String)]
downgradeShortcuts =
$( do
let s = $(Embed.makeRelativeToProject "src-rsr/catalog_versions.txt" >>= Embed.embedStringFile)
parseVersions = map (parseVersion . words) . lines
parseVersion [tag, version] = (tag, version)
parseVersion other = error ("unrecognized tag/catalog mapping " ++ show other)
TH.lift (parseVersions s)
)
--------------------------------------------------------------------------------
downgradeCommandParser :: Opt.Parser Config.DowngradeOptions
downgradeCommandParser =
Config.DowngradeOptions
<$> choice
( Opt.strOption
( Opt.long "to-catalog-version"
<> Opt.metavar "<VERSION>"
<> Opt.help "The target catalog schema version (e.g. 31)"
)
: map (uncurry shortcut) downgradeShortcuts
)
<*> Opt.switch
( Opt.long "dryRun"
<> Opt.help "Don't run any migrations, just print out the SQL."
)
where
shortcut v catalogVersion =
Opt.flag'
(String.fromString catalogVersion)
( Opt.long ("to-" <> v)
<> Opt.help ("Downgrade to graphql-engine version " <> v <> " (equivalent to --to-catalog-version " <> catalogVersion <> ")")
)