1137 lines
41 KiB
Haskell
1137 lines
41 KiB
Haskell
{- S3 remotes
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-
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- Copyright 2011-2019 Joey Hess <id@joeyh.name>
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-
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- Licensed under the GNU AGPL version 3 or higher.
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-}
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{-# LANGUAGE TypeFamilies #-}
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{-# LANGUAGE OverloadedStrings #-}
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{-# LANGUAGE BangPatterns #-}
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{-# LANGUAGE CPP #-}
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module Remote.S3 (remote, iaHost, configIA, iaItemUrl) where
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import qualified Aws as AWS
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import qualified Aws.Core as AWS
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import qualified Aws.S3 as S3
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import qualified Data.Text as T
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import qualified Data.Text.Encoding as T
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import qualified Data.ByteString.Lazy as L
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import qualified Data.ByteString as BS
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import qualified Data.ByteString.Char8 as B8
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import qualified Data.Map as M
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import qualified Data.Set as S
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import qualified System.FilePath.Posix as Posix
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import Data.Char
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import Data.String
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import Network.Socket (HostName)
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import Network.HTTP.Conduit (Manager)
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import Network.HTTP.Client (responseStatus, responseBody, RequestBody(..))
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import Network.HTTP.Types
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import Control.Monad.Trans.Resource
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import Control.Monad.Catch
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import Data.IORef
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import System.Log.Logger
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import Control.Concurrent.STM (atomically)
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import Control.Concurrent.STM.TVar
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import Annex.Common
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import Types.Remote
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import Types.Export
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import qualified Git
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import qualified Annex
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import Config
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import Config.Cost
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import Remote.Helper.Special
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import Remote.Helper.Http
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import Remote.Helper.Messages
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import Remote.Helper.ExportImport
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import Types.Import
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import qualified Remote.Helper.AWS as AWS
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import Creds
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import Annex.UUID
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import Annex.Magic
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import Logs.Web
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import Logs.MetaData
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import Types.MetaData
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import Utility.Metered
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import qualified Annex.Url as Url
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import Utility.DataUnits
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import Annex.Content
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import Annex.Url (getUrlOptions, withUrlOptions)
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import Utility.Url (checkBoth, UrlOptions(..))
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import Utility.Env
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type BucketName = String
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type BucketObject = String
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remote :: RemoteType
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remote = RemoteType
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{ typename = "S3"
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, enumerate = const (findSpecialRemotes "s3")
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, generate = gen
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, setup = s3Setup
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, exportSupported = exportIsSupported
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, importSupported = importIsSupported
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}
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gen :: Git.Repo -> UUID -> RemoteConfig -> RemoteGitConfig -> Annex (Maybe Remote)
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gen r u c gc = do
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cst <- remoteCost gc expensiveRemoteCost
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info <- extractS3Info c
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hdl <- mkS3HandleVar c gc u
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magic <- liftIO initMagicMimeType
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return $ new cst info hdl magic
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where
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new cst info hdl magic = Just $ specialRemote c
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(simplyPrepare $ store hdl this info magic)
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(simplyPrepare $ retrieve hdl this c info)
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(simplyPrepare $ remove hdl this info)
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(simplyPrepare $ checkKey hdl this c info)
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this
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where
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this = Remote
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{ uuid = u
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, cost = cst
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, name = Git.repoDescribe r
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, storeKey = storeKeyDummy
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, retrieveKeyFile = retreiveKeyFileDummy
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, retrieveKeyFileCheap = retrieveCheap
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-- HttpManagerRestricted is used here, so this is
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-- secure.
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, retrievalSecurityPolicy = RetrievalAllKeysSecure
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, removeKey = removeKeyDummy
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, lockContent = Nothing
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, checkPresent = checkPresentDummy
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, checkPresentCheap = False
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, exportActions = ExportActions
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{ storeExport = storeExportS3 hdl this info magic
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, retrieveExport = retrieveExportS3 hdl this info
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, removeExport = removeExportS3 hdl this info
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, checkPresentExport = checkPresentExportS3 hdl this info
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-- S3 does not have directories.
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, removeExportDirectory = Nothing
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, renameExport = renameExportS3 hdl this info
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}
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, importActions = ImportActions
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{ listImportableContents = listImportableContentsS3 hdl this info
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, retrieveExportWithContentIdentifier = retrieveExportWithContentIdentifierS3 hdl this info
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, storeExportWithContentIdentifier = storeExportWithContentIdentifierS3 hdl this info magic
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, removeExportWithContentIdentifier = removeExportWithContentIdentifierS3 hdl info
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, removeExportDirectoryWhenEmpty = Nothing
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, checkPresentExportWithContentIdentifier = checkPresentExportWithContentIdentifierS3 hdl info
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}
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, whereisKey = Just (getPublicWebUrls u info c)
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, remoteFsck = Nothing
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, repairRepo = Nothing
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, config = c
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, getRepo = return r
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, gitconfig = gc
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, localpath = Nothing
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, readonly = False
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, appendonly = versioning info
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, availability = GloballyAvailable
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, remotetype = remote
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, mkUnavailable = gen r u (M.insert "host" "!dne!" c) gc
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, getInfo = includeCredsInfo c (AWS.creds u) (s3Info c info)
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, claimUrl = Nothing
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, checkUrl = Nothing
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}
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s3Setup :: SetupStage -> Maybe UUID -> Maybe CredPair -> RemoteConfig -> RemoteGitConfig -> Annex (RemoteConfig, UUID)
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s3Setup ss mu mcreds c gc = do
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u <- maybe (liftIO genUUID) return mu
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s3Setup' ss u mcreds c gc
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s3Setup' :: SetupStage -> UUID -> Maybe CredPair -> RemoteConfig -> RemoteGitConfig -> Annex (RemoteConfig, UUID)
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s3Setup' ss u mcreds c gc
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| configIA c = archiveorg
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| otherwise = defaulthost
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where
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remotename = fromJust (M.lookup "name" c)
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defbucket = remotename ++ "-" ++ fromUUID u
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defaults = M.fromList
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[ ("datacenter", T.unpack $ AWS.defaultRegion AWS.S3)
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, ("storageclass", "STANDARD")
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, ("host", AWS.s3DefaultHost)
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, ("port", "80")
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, ("bucket", defbucket)
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]
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use fullconfig info = do
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enableBucketVersioning ss info fullconfig gc u
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gitConfigSpecialRemote u fullconfig [("s3", "true")]
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return (fullconfig, u)
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defaulthost = do
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(c', encsetup) <- encryptionSetup c gc
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c'' <- setRemoteCredPair encsetup c' gc (AWS.creds u) mcreds
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let fullconfig = c'' `M.union` defaults
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info <- extractS3Info fullconfig
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checkexportimportsafe fullconfig info
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case ss of
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Init -> genBucket fullconfig gc u
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_ -> return ()
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use fullconfig info
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archiveorg = do
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showNote "Internet Archive mode"
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c' <- setRemoteCredPair noEncryptionUsed c gc (AWS.creds u) mcreds
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-- Ensure user enters a valid bucket name, since
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-- this determines the name of the archive.org item.
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let validbucket = replace " " "-" $
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fromMaybe (giveup "specify bucket=") $
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getBucketName c'
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let archiveconfig =
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-- IA acdepts x-amz-* as an alias for x-archive-*
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M.mapKeys (replace "x-archive-" "x-amz-") $
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-- encryption does not make sense here
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M.insert "encryption" "none" $
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M.insert "bucket" validbucket $
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M.union c' $
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-- special constraints on key names
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M.insert "mungekeys" "ia" defaults
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info <- extractS3Info archiveconfig
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checkexportimportsafe archiveconfig info
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hdl <- mkS3HandleVar archiveconfig gc u
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withS3HandleOrFail u hdl $
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writeUUIDFile archiveconfig u info
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use archiveconfig info
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checkexportimportsafe c' info =
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unlessM (Annex.getState Annex.force) $
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checkexportimportsafe' c' info
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checkexportimportsafe' c' info
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| versioning info = return ()
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| otherwise = when (exportTree c' && importTree c') $
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giveup $ unwords
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[ "Combining exporttree=yes and importtree=yes"
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, "with an unversioned S3 bucket is not safe;"
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, "exporting can overwrite other modifications"
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, "to files in the bucket."
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, "Recommend you add versioning=yes."
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, "(Or use --force if you don't mind possibly losing data.)"
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]
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store :: S3HandleVar -> Remote -> S3Info -> Maybe Magic -> Storer
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store mh r info magic = fileStorer $ \k f p -> withS3HandleOrFail (uuid r) mh $ \h -> do
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void $ storeHelper info h magic f (T.pack $ bucketObject info k) p
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-- Store public URL to item in Internet Archive.
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when (isIA info && not (isChunkKey k)) $
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setUrlPresent k (iaPublicUrl info (bucketObject info k))
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return True
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storeHelper :: S3Info -> S3Handle -> Maybe Magic -> FilePath -> S3.Object -> MeterUpdate -> Annex (Maybe S3VersionID)
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storeHelper info h magic f object p = liftIO $ case partSize info of
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Just partsz | partsz > 0 -> do
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fsz <- getFileSize f
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if fsz > partsz
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then multipartupload fsz partsz
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else singlepartupload
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_ -> singlepartupload
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where
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singlepartupload = runResourceT $ do
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contenttype <- liftIO getcontenttype
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rbody <- liftIO $ httpBodyStorer f p
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let req = (putObject info object rbody)
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{ S3.poContentType = encodeBS <$> contenttype }
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vid <- S3.porVersionId <$> sendS3Handle h req
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return (mkS3VersionID object vid)
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multipartupload fsz partsz = runResourceT $ do
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#if MIN_VERSION_aws(0,16,0)
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contenttype <- liftIO getcontenttype
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let startreq = (S3.postInitiateMultipartUpload (bucket info) object)
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{ S3.imuStorageClass = Just (storageClass info)
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, S3.imuMetadata = metaHeaders info
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, S3.imuAutoMakeBucket = isIA info
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, S3.imuExpires = Nothing -- TODO set some reasonable expiry
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, S3.imuContentType = fromString <$> contenttype
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}
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uploadid <- S3.imurUploadId <$> sendS3Handle h startreq
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-- The actual part size will be a even multiple of the
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-- 32k chunk size that lazy ByteStrings use.
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let partsz' = (partsz `div` toInteger defaultChunkSize) * toInteger defaultChunkSize
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-- Send parts of the file, taking care to stream each part
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-- w/o buffering in memory, since the parts can be large.
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etags <- bracketIO (openBinaryFile f ReadMode) hClose $ \fh -> do
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let sendparts meter etags partnum = do
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pos <- liftIO $ hTell fh
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if pos >= fsz
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then return (reverse etags)
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else do
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-- Calculate size of part that will
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-- be read.
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let sz = if fsz - pos < partsz'
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then fsz - pos
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else partsz'
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let p' = offsetMeterUpdate p (toBytesProcessed pos)
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let numchunks = ceiling (fromIntegral sz / fromIntegral defaultChunkSize :: Double)
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let popper = handlePopper numchunks defaultChunkSize p' fh
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let req = S3.uploadPart (bucket info) object partnum uploadid $
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RequestBodyStream (fromIntegral sz) popper
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S3.UploadPartResponse { S3.uprETag = etag } <- sendS3Handle h req
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sendparts (offsetMeterUpdate meter (toBytesProcessed sz)) (etag:etags) (partnum + 1)
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sendparts p [] 1
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r <- sendS3Handle h $ S3.postCompleteMultipartUpload
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(bucket info) object uploadid (zip [1..] etags)
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return (mkS3VersionID object (S3.cmurVersionId r))
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#else
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warningIO $ "Cannot do multipart upload (partsize " ++ show partsz ++ ") of large file (" ++ show fsz ++ "); built with too old a version of the aws library."
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singlepartupload
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#endif
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getcontenttype = maybe (pure Nothing) (flip getMagicMimeType f) magic
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{- Implemented as a fileRetriever, that uses conduit to stream the chunks
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- out to the file. Would be better to implement a byteRetriever, but
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- that is difficult. -}
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retrieve :: S3HandleVar -> Remote -> RemoteConfig -> S3Info -> Retriever
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retrieve hv r c info = fileRetriever $ \f k p -> withS3Handle hv $ \case
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(Just h) ->
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eitherS3VersionID info (uuid r) c k (T.pack $ bucketObject info k) >>= \case
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Left failreason -> do
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warning failreason
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giveup "cannot download content"
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Right loc -> retrieveHelper info h loc f p
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Nothing ->
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getPublicWebUrls' (uuid r) info c k >>= \case
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Left failreason -> do
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warning failreason
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giveup "cannot download content"
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Right us -> unlessM (downloadUrl k p us f) $
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giveup "failed to download content"
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retrieveHelper :: S3Info -> S3Handle -> (Either S3.Object S3VersionID) -> FilePath -> MeterUpdate -> Annex ()
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retrieveHelper info h loc f p = retrieveHelper' h f p $
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case loc of
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Left o -> S3.getObject (bucket info) o
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Right (S3VersionID o vid) -> (S3.getObject (bucket info) o)
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{ S3.goVersionId = Just vid }
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retrieveHelper' :: S3Handle -> FilePath -> MeterUpdate -> S3.GetObject -> Annex ()
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retrieveHelper' h f p req = liftIO $ runResourceT $ do
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S3.GetObjectResponse { S3.gorResponse = rsp } <- sendS3Handle h req
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Url.sinkResponseFile p zeroBytesProcessed f WriteMode rsp
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retrieveCheap :: Key -> AssociatedFile -> FilePath -> Annex Bool
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retrieveCheap _ _ _ = return False
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remove :: S3HandleVar -> Remote -> S3Info -> Remover
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remove hv r info k = withS3HandleOrFail (uuid r) hv $ \h -> liftIO $ runResourceT $ do
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res <- tryNonAsync $ sendS3Handle h $
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S3.DeleteObject (T.pack $ bucketObject info k) (bucket info)
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return $ either (const False) (const True) res
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checkKey :: S3HandleVar -> Remote -> RemoteConfig -> S3Info -> CheckPresent
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checkKey hv r c info k = withS3Handle hv $ \case
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Just h -> do
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showChecking r
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eitherS3VersionID info (uuid r) c k (T.pack $ bucketObject info k) >>= \case
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Left failreason -> do
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warning failreason
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giveup "cannot check content"
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Right loc -> checkKeyHelper info h loc
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Nothing ->
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getPublicWebUrls' (uuid r) info c k >>= \case
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Left failreason -> do
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warning failreason
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giveup "cannot check content"
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Right us -> do
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showChecking r
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let check u = withUrlOptions $
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liftIO . checkBoth u (keySize k)
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anyM check us
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checkKeyHelper :: S3Info -> S3Handle -> (Either S3.Object S3VersionID) -> Annex Bool
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checkKeyHelper info h loc = liftIO $ runResourceT $ do
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rsp <- sendS3Handle h req
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return (isJust $ S3.horMetadata rsp)
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where
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req = case loc of
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Left o -> S3.headObject (bucket info) o
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Right (S3VersionID o vid) -> (S3.headObject (bucket info) o)
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{ S3.hoVersionId = Just vid }
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storeExportS3 :: S3HandleVar -> Remote -> S3Info -> Maybe Magic -> FilePath -> Key -> ExportLocation -> MeterUpdate -> Annex Bool
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storeExportS3 hv r info magic f k loc p = fst
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<$> storeExportS3' hv r info magic f k loc p
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storeExportS3' :: S3HandleVar -> Remote -> S3Info -> Maybe Magic -> FilePath -> Key -> ExportLocation -> MeterUpdate -> Annex (Bool, Maybe S3VersionID)
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storeExportS3' hv r info magic f k loc p = withS3Handle hv $ \case
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Just h -> catchNonAsync (go h) (\e -> warning (show e) >> return (False, Nothing))
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Nothing -> do
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warning $ needS3Creds (uuid r)
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return (False, Nothing)
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where
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go h = do
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let o = T.pack $ bucketExportLocation info loc
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mvid <- storeHelper info h magic f o p
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setS3VersionID info (uuid r) k mvid
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return (True, mvid)
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retrieveExportS3 :: S3HandleVar -> Remote -> S3Info -> Key -> ExportLocation -> FilePath -> MeterUpdate -> Annex Bool
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retrieveExportS3 hv r info _k loc f p =
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catchNonAsync go (\e -> warning (show e) >> return False)
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where
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go = withS3Handle hv $ \case
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Just h -> do
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retrieveHelper info h (Left (T.pack exporturl)) f p
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return True
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Nothing -> case getPublicUrlMaker info of
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Nothing -> do
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warning $ needS3Creds (uuid r)
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return False
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Just geturl -> Url.withUrlOptions $
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liftIO . Url.download p (geturl exporturl) f
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exporturl = bucketExportLocation info loc
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removeExportS3 :: S3HandleVar -> Remote -> S3Info -> Key -> ExportLocation -> Annex Bool
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removeExportS3 hv r info k loc = withS3Handle hv $ \case
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Just h -> checkVersioning info (uuid r) k $
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catchNonAsync (go h) (\e -> warning (show e) >> return False)
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Nothing -> do
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warning $ needS3Creds (uuid r)
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return False
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where
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go h = liftIO $ runResourceT $ do
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res <- tryNonAsync $ sendS3Handle h $
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S3.DeleteObject (T.pack $ bucketExportLocation info loc) (bucket info)
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return $ either (const False) (const True) res
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checkPresentExportS3 :: S3HandleVar -> Remote -> S3Info -> Key -> ExportLocation -> Annex Bool
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checkPresentExportS3 hv r info k loc = withS3Handle hv $ \case
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Just h -> checkKeyHelper info h (Left (T.pack $ bucketExportLocation info loc))
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Nothing -> case getPublicUrlMaker info of
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Just geturl -> withUrlOptions $ liftIO .
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checkBoth (geturl $ bucketExportLocation info loc) (keySize k)
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Nothing -> do
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warning $ needS3Creds (uuid r)
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giveup "No S3 credentials configured"
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-- S3 has no move primitive; copy and delete.
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renameExportS3 :: S3HandleVar -> Remote -> S3Info -> Key -> ExportLocation -> ExportLocation -> Annex (Maybe Bool)
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renameExportS3 hv r info k src dest = Just <$> go
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where
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go = withS3Handle hv $ \case
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Just h -> checkVersioning info (uuid r) k $
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catchNonAsync (go' h) (\_ -> return False)
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Nothing -> do
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warning $ needS3Creds (uuid r)
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return False
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go' h = liftIO $ runResourceT $ do
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let co = S3.copyObject (bucket info) dstobject
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(S3.ObjectId (bucket info) srcobject Nothing)
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S3.CopyMetadata
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-- ACL is not preserved by copy.
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void $ sendS3Handle h $ co { S3.coAcl = acl info }
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void $ sendS3Handle h $ S3.DeleteObject srcobject (bucket info)
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return True
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srcobject = T.pack $ bucketExportLocation info src
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dstobject = T.pack $ bucketExportLocation info dest
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listImportableContentsS3 :: S3HandleVar -> Remote -> S3Info -> Annex (Maybe (ImportableContents (ContentIdentifier, ByteSize)))
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listImportableContentsS3 hv r info =
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withS3Handle hv $ \case
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Nothing -> do
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warning $ needS3Creds (uuid r)
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return Nothing
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Just h -> catchMaybeIO $ liftIO $ runResourceT $ startlist h
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where
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startlist h
|
|
| versioning info = do
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rsp <- sendS3Handle h $
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S3.getBucketObjectVersions (bucket info)
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continuelistversioned h [] rsp
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| otherwise = do
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rsp <- sendS3Handle h $
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S3.getBucket (bucket info)
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continuelistunversioned h [] rsp
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continuelistunversioned h l rsp
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| S3.gbrIsTruncated rsp = do
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rsp' <- sendS3Handle h $
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(S3.getBucket (bucket info))
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{ S3.gbMarker = S3.gbrNextMarker rsp
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}
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continuelistunversioned h (rsp:l) rsp'
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| otherwise = return $
|
|
mkImportableContentsUnversioned info (reverse (rsp:l))
|
|
|
|
continuelistversioned h l rsp
|
|
| S3.gbovrIsTruncated rsp = do
|
|
rsp' <- sendS3Handle h $
|
|
(S3.getBucketObjectVersions (bucket info))
|
|
{ S3.gbovKeyMarker = S3.gbovrNextKeyMarker rsp
|
|
, S3.gbovVersionIdMarker = S3.gbovrNextVersionIdMarker rsp
|
|
}
|
|
continuelistversioned h (rsp:l) rsp'
|
|
| otherwise = return $
|
|
mkImportableContentsVersioned info (reverse (rsp:l))
|
|
|
|
mkImportableContentsUnversioned :: S3Info -> [S3.GetBucketResponse] -> ImportableContents (ContentIdentifier, ByteSize)
|
|
mkImportableContentsUnversioned info l = ImportableContents
|
|
{ importableContents = concatMap (mapMaybe extract . S3.gbrContents) l
|
|
, importableHistory = []
|
|
}
|
|
where
|
|
extract oi = do
|
|
loc <- bucketImportLocation info $
|
|
T.unpack $ S3.objectKey oi
|
|
let sz = S3.objectSize oi
|
|
let cid = mkS3UnversionedContentIdentifier $ S3.objectETag oi
|
|
return (loc, (cid, sz))
|
|
|
|
mkImportableContentsVersioned :: S3Info -> [S3.GetBucketObjectVersionsResponse] -> ImportableContents (ContentIdentifier, ByteSize)
|
|
mkImportableContentsVersioned info = build . groupfiles
|
|
where
|
|
build [] = ImportableContents [] []
|
|
build l =
|
|
let (l', v) = latestversion l
|
|
in ImportableContents
|
|
{ importableContents = mapMaybe extract v
|
|
, importableHistory = case build l' of
|
|
ImportableContents [] [] -> []
|
|
h -> [h]
|
|
}
|
|
|
|
extract ovi@(S3.ObjectVersion {}) = do
|
|
loc <- bucketImportLocation info $
|
|
T.unpack $ S3.oviKey ovi
|
|
let sz = S3.oviSize ovi
|
|
let cid = mkS3VersionedContentIdentifier' ovi
|
|
return (loc, (cid, sz))
|
|
extract (S3.DeleteMarker {}) = Nothing
|
|
|
|
-- group files so all versions of a file are in a sublist,
|
|
-- with the newest first. S3 uses such an order, so it's just a
|
|
-- matter of breaking up the response list into sublists.
|
|
groupfiles = groupBy (\a b -> S3.oviKey a == S3.oviKey b)
|
|
. concatMap S3.gbovrContents
|
|
|
|
latestversion [] = ([], [])
|
|
latestversion ([]:rest) = latestversion rest
|
|
latestversion l@((first:_old):remainder) =
|
|
go (S3.oviLastModified first) [first] remainder
|
|
where
|
|
go mtime c [] = (removemostrecent mtime l, reverse c)
|
|
go mtime c ([]:rest) = go mtime c rest
|
|
go mtime c ((latest:_old):rest) =
|
|
let !mtime' = max mtime (S3.oviLastModified latest)
|
|
in go mtime' (latest:c) rest
|
|
|
|
removemostrecent _ [] = []
|
|
removemostrecent mtime ([]:rest) = removemostrecent mtime rest
|
|
removemostrecent mtime (i@(curr:old):rest)
|
|
| S3.oviLastModified curr == mtime =
|
|
old : removemostrecent mtime rest
|
|
| otherwise =
|
|
i : removemostrecent mtime rest
|
|
|
|
retrieveExportWithContentIdentifierS3 :: S3HandleVar -> Remote -> S3Info -> ExportLocation -> ContentIdentifier -> FilePath -> Annex (Maybe Key) -> MeterUpdate -> Annex (Maybe Key)
|
|
retrieveExportWithContentIdentifierS3 hv r info loc cid dest mkkey p = withS3Handle hv $ \case
|
|
Nothing -> do
|
|
warning $ needS3Creds (uuid r)
|
|
return Nothing
|
|
Just h -> flip catchNonAsync (\e -> warning (show e) >> return Nothing) $ do
|
|
rewritePreconditionException $ retrieveHelper' h dest p $
|
|
limitGetToContentIdentifier cid $
|
|
S3.getObject (bucket info) o
|
|
mkkey
|
|
where
|
|
o = T.pack $ bucketExportLocation info loc
|
|
|
|
{- Catch exception getObject returns when a precondition is not met,
|
|
- and replace with a more understandable message for the user. -}
|
|
rewritePreconditionException :: Annex a -> Annex a
|
|
rewritePreconditionException a = catchJust (Url.matchStatusCodeException want) a $
|
|
const $ giveup "requested version of object is not available in S3 bucket"
|
|
where
|
|
want st = statusCode st == 412 &&
|
|
statusMessage st == "Precondition Failed"
|
|
|
|
-- Does not check if content on S3 is safe to overwrite, because there
|
|
-- is no atomic way to do so. When the bucket is versioned, this is
|
|
-- acceptable because listImportableContentsS3 will find versions
|
|
-- of files that were overwritten by this and no data is lost.
|
|
--
|
|
-- When the bucket is not versioned, data loss can result.
|
|
-- This is why that configuration requires --force to enable.
|
|
storeExportWithContentIdentifierS3 :: S3HandleVar -> Remote -> S3Info -> Maybe Magic -> FilePath -> Key -> ExportLocation -> [ContentIdentifier] -> MeterUpdate -> Annex (Maybe ContentIdentifier)
|
|
storeExportWithContentIdentifierS3 hv r info magic src k loc _overwritablecids p =
|
|
storeExportS3' hv r info magic src k loc p >>= \case
|
|
(False, _) -> return Nothing
|
|
(True, Just vid) -> return $ Just $
|
|
mkS3VersionedContentIdentifier vid
|
|
(True, Nothing) -> return $ Just $
|
|
-- FIXME for an unversioned bucket, should use the etag
|
|
-- of the file, which is its md5sum, as the ContentIdentifier
|
|
-- NOT mempty!
|
|
-- This is blocked by
|
|
-- https://github.com/aristidb/aws/issues/258
|
|
mkS3UnversionedContentIdentifier mempty
|
|
|
|
removeExportWithContentIdentifierS3 :: S3HandleVar -> S3Info -> Key -> ExportLocation -> [ContentIdentifier] -> Annex Bool
|
|
removeExportWithContentIdentifierS3 hv info k loc removeablecids = undefined
|
|
|
|
checkPresentExportWithContentIdentifierS3 :: S3HandleVar -> S3Info -> Key -> ExportLocation -> [ContentIdentifier] -> Annex Bool
|
|
checkPresentExportWithContentIdentifierS3 hv info _k loc knowncids = undefined
|
|
|
|
{- Generate the bucket if it does not already exist, including creating the
|
|
- UUID file within the bucket.
|
|
-
|
|
- Some ACLs can allow read/write to buckets, but not querying them,
|
|
- so first check if the UUID file already exists and we can skip creating
|
|
- it.
|
|
-}
|
|
genBucket :: RemoteConfig -> RemoteGitConfig -> UUID -> Annex ()
|
|
genBucket c gc u = do
|
|
showAction "checking bucket"
|
|
info <- extractS3Info c
|
|
hdl <- mkS3HandleVar c gc u
|
|
withS3HandleOrFail u hdl $ \h ->
|
|
go info h =<< checkUUIDFile c u info h
|
|
where
|
|
go _ _ (Right True) = noop
|
|
go info h _ = do
|
|
v <- liftIO $ tryNonAsync $ runResourceT $
|
|
sendS3Handle h (S3.getBucket $ bucket info)
|
|
case v of
|
|
Right _ -> noop
|
|
Left _ -> do
|
|
showAction $ "creating bucket in " ++ datacenter
|
|
void $ liftIO $ runResourceT $ sendS3Handle h $
|
|
(S3.putBucket (bucket info))
|
|
{ S3.pbCannedAcl = acl info
|
|
, S3.pbLocationConstraint = locconstraint
|
|
, S3.pbXStorageClass = storageclass
|
|
}
|
|
writeUUIDFile c u info h
|
|
|
|
locconstraint = mkLocationConstraint $ T.pack datacenter
|
|
datacenter = fromJust $ M.lookup "datacenter" c
|
|
-- "NEARLINE" as a storage class when creating a bucket is a
|
|
-- nonstandard extension of Google Cloud Storage.
|
|
storageclass = case getStorageClass c of
|
|
sc@(S3.OtherStorageClass "NEARLINE") -> Just sc
|
|
_ -> Nothing
|
|
|
|
{- Writes the UUID to an annex-uuid file within the bucket.
|
|
-
|
|
- If the file already exists in the bucket, it must match,
|
|
- or this fails.
|
|
-
|
|
- Note that IA buckets can only created by having a file
|
|
- stored in them. So this also takes care of that.
|
|
-}
|
|
writeUUIDFile :: RemoteConfig -> UUID -> S3Info -> S3Handle -> Annex ()
|
|
writeUUIDFile c u info h = do
|
|
v <- checkUUIDFile c u info h
|
|
case v of
|
|
Right True -> noop
|
|
Right False -> do
|
|
warning "The bucket already exists, and its annex-uuid file indicates it is used by a different special remote."
|
|
giveup "Cannot reuse this bucket."
|
|
_ -> void $ liftIO $ runResourceT $ sendS3Handle h mkobject
|
|
where
|
|
file = T.pack $ uuidFile c
|
|
uuidb = L.fromChunks [T.encodeUtf8 $ T.pack $ fromUUID u]
|
|
|
|
mkobject = putObject info file (RequestBodyLBS uuidb)
|
|
|
|
{- Checks if the UUID file exists in the bucket
|
|
- and has the specified UUID already. -}
|
|
checkUUIDFile :: RemoteConfig -> UUID -> S3Info -> S3Handle -> Annex (Either SomeException Bool)
|
|
checkUUIDFile c u info h = tryNonAsync $ liftIO $ runResourceT $ do
|
|
resp <- tryS3 $ sendS3Handle h (S3.getObject (bucket info) file)
|
|
case resp of
|
|
Left _ -> return False
|
|
Right r -> do
|
|
v <- AWS.loadToMemory r
|
|
let !ok = check v
|
|
return ok
|
|
where
|
|
check (S3.GetObjectMemoryResponse _meta rsp) =
|
|
responseStatus rsp == ok200 && responseBody rsp == uuidb
|
|
|
|
file = T.pack $ uuidFile c
|
|
uuidb = L.fromChunks [T.encodeUtf8 $ T.pack $ fromUUID u]
|
|
|
|
uuidFile :: RemoteConfig -> FilePath
|
|
uuidFile c = getFilePrefix c ++ "annex-uuid"
|
|
|
|
tryS3 :: ResourceT IO a -> ResourceT IO (Either S3.S3Error a)
|
|
tryS3 a = (Right <$> a) `catch` (pure . Left)
|
|
|
|
data S3Handle = S3Handle
|
|
{ hmanager :: Manager
|
|
, hawscfg :: AWS.Configuration
|
|
, hs3cfg :: S3.S3Configuration AWS.NormalQuery
|
|
}
|
|
|
|
{- Sends a request to S3 and gets back the response. -}
|
|
sendS3Handle
|
|
:: (AWS.Transaction r a, AWS.ServiceConfiguration r ~ S3.S3Configuration)
|
|
=> S3Handle
|
|
-> r
|
|
-> ResourceT IO a
|
|
sendS3Handle h r = AWS.pureAws (hawscfg h) (hs3cfg h) (hmanager h) r
|
|
|
|
type S3HandleVar = TVar (Either (Annex (Maybe S3Handle)) (Maybe S3Handle))
|
|
|
|
{- Prepares a S3Handle for later use. Does not connect to S3 or do anything
|
|
- else expensive. -}
|
|
mkS3HandleVar :: RemoteConfig -> RemoteGitConfig -> UUID -> Annex S3HandleVar
|
|
mkS3HandleVar c gc u = liftIO $ newTVarIO $ Left $ do
|
|
mcreds <- getRemoteCredPair c gc (AWS.creds u)
|
|
case mcreds of
|
|
Just creds -> do
|
|
awscreds <- liftIO $ genCredentials creds
|
|
let awscfg = AWS.Configuration AWS.Timestamp awscreds debugMapper
|
|
#if MIN_VERSION_aws(0,17,0)
|
|
Nothing
|
|
#endif
|
|
ou <- getUrlOptions
|
|
return $ Just $ S3Handle (httpManager ou) awscfg s3cfg
|
|
Nothing -> return Nothing
|
|
where
|
|
s3cfg = s3Configuration c
|
|
|
|
withS3Handle :: S3HandleVar -> (Maybe S3Handle -> Annex a) -> Annex a
|
|
withS3Handle hv a = liftIO (readTVarIO hv) >>= \case
|
|
Right hdl -> a hdl
|
|
Left mkhdl -> do
|
|
hdl <- mkhdl
|
|
liftIO $ atomically $ writeTVar hv (Right hdl)
|
|
a hdl
|
|
|
|
withS3HandleOrFail :: UUID -> S3HandleVar -> (S3Handle -> Annex a) -> Annex a
|
|
withS3HandleOrFail u hv a = withS3Handle hv $ \case
|
|
Just hdl -> a hdl
|
|
Nothing -> do
|
|
warning $ needS3Creds u
|
|
giveup "No S3 credentials configured"
|
|
|
|
needS3Creds :: UUID -> String
|
|
needS3Creds u = missingCredPairFor "S3" (AWS.creds u)
|
|
|
|
s3Configuration :: RemoteConfig -> S3.S3Configuration AWS.NormalQuery
|
|
s3Configuration c = cfg
|
|
{ S3.s3Port = port
|
|
, S3.s3RequestStyle = case M.lookup "requeststyle" c of
|
|
Just "path" -> S3.PathStyle
|
|
Just s -> giveup $ "bad S3 requeststyle value: " ++ s
|
|
Nothing -> S3.s3RequestStyle cfg
|
|
}
|
|
where
|
|
h = fromJust $ M.lookup "host" c
|
|
datacenter = fromJust $ M.lookup "datacenter" c
|
|
-- When the default S3 host is configured, connect directly to
|
|
-- the S3 endpoint for the configured datacenter.
|
|
-- When another host is configured, it's used as-is.
|
|
endpoint
|
|
| h == AWS.s3DefaultHost = AWS.s3HostName $ T.pack datacenter
|
|
| otherwise = T.encodeUtf8 $ T.pack h
|
|
port = case M.lookup "port" c of
|
|
Just s ->
|
|
case reads s of
|
|
[(p, _)]
|
|
-- Let protocol setting override
|
|
-- default port 80.
|
|
| p == 80 -> case cfgproto of
|
|
Just AWS.HTTPS -> 443
|
|
_ -> p
|
|
| otherwise -> p
|
|
_ -> giveup $ "bad S3 port value: " ++ s
|
|
Nothing -> case cfgproto of
|
|
Just AWS.HTTPS -> 443
|
|
Just AWS.HTTP -> 80
|
|
Nothing -> 80
|
|
cfgproto = case M.lookup "protocol" c of
|
|
Just "https" -> Just AWS.HTTPS
|
|
Just "http" -> Just AWS.HTTP
|
|
Just s -> giveup $ "bad S3 protocol value: " ++ s
|
|
Nothing -> Nothing
|
|
proto = case cfgproto of
|
|
Just v -> v
|
|
Nothing
|
|
| port == 443 -> AWS.HTTPS
|
|
| otherwise -> AWS.HTTP
|
|
cfg = S3.s3 proto endpoint False
|
|
|
|
data S3Info = S3Info
|
|
{ bucket :: S3.Bucket
|
|
, storageClass :: S3.StorageClass
|
|
, bucketObject :: Key -> BucketObject
|
|
, bucketExportLocation :: ExportLocation -> BucketObject
|
|
, bucketImportLocation :: BucketObject -> Maybe ImportLocation
|
|
, metaHeaders :: [(T.Text, T.Text)]
|
|
, partSize :: Maybe Integer
|
|
, isIA :: Bool
|
|
, versioning :: Bool
|
|
, public :: Bool
|
|
, publicurl :: Maybe URLString
|
|
, host :: Maybe String
|
|
}
|
|
|
|
extractS3Info :: RemoteConfig -> Annex S3Info
|
|
extractS3Info c = do
|
|
b <- maybe
|
|
(giveup "S3 bucket not configured")
|
|
(return . T.pack)
|
|
(getBucketName c)
|
|
return $ S3Info
|
|
{ bucket = b
|
|
, storageClass = getStorageClass c
|
|
, bucketObject = getBucketObject c
|
|
, bucketExportLocation = getBucketExportLocation c
|
|
, bucketImportLocation = getBucketImportLocation c
|
|
, metaHeaders = getMetaHeaders c
|
|
, partSize = getPartSize c
|
|
, isIA = configIA c
|
|
, versioning = boolcfg "versioning"
|
|
, public = boolcfg "public"
|
|
, publicurl = M.lookup "publicurl" c
|
|
, host = M.lookup "host" c
|
|
}
|
|
where
|
|
boolcfg k = fromMaybe False $ yesNo =<< M.lookup k c
|
|
|
|
putObject :: S3Info -> T.Text -> RequestBody -> S3.PutObject
|
|
putObject info file rbody = (S3.putObject (bucket info) file rbody)
|
|
{ S3.poStorageClass = Just (storageClass info)
|
|
, S3.poMetadata = metaHeaders info
|
|
, S3.poAutoMakeBucket = isIA info
|
|
, S3.poAcl = acl info
|
|
}
|
|
|
|
acl :: S3Info -> Maybe S3.CannedAcl
|
|
acl info
|
|
| public info = Just S3.AclPublicRead
|
|
| otherwise = Nothing
|
|
|
|
getBucketName :: RemoteConfig -> Maybe BucketName
|
|
getBucketName = map toLower <$$> M.lookup "bucket"
|
|
|
|
getStorageClass :: RemoteConfig -> S3.StorageClass
|
|
getStorageClass c = case M.lookup "storageclass" c of
|
|
Just "REDUCED_REDUNDANCY" -> S3.ReducedRedundancy
|
|
Just s -> S3.OtherStorageClass (T.pack s)
|
|
_ -> S3.Standard
|
|
|
|
getPartSize :: RemoteConfig -> Maybe Integer
|
|
getPartSize c = readSize dataUnits =<< M.lookup "partsize" c
|
|
|
|
getMetaHeaders :: RemoteConfig -> [(T.Text, T.Text)]
|
|
getMetaHeaders = map munge . filter ismetaheader . M.assocs
|
|
where
|
|
ismetaheader (h, _) = metaprefix `isPrefixOf` h
|
|
metaprefix = "x-amz-meta-"
|
|
metaprefixlen = length metaprefix
|
|
munge (k, v) = (T.pack $ drop metaprefixlen k, T.pack v)
|
|
|
|
getFilePrefix :: RemoteConfig -> String
|
|
getFilePrefix = M.findWithDefault "" "fileprefix"
|
|
|
|
getBucketObject :: RemoteConfig -> Key -> BucketObject
|
|
getBucketObject c = munge . serializeKey
|
|
where
|
|
munge s = case M.lookup "mungekeys" c of
|
|
Just "ia" -> iaMunge $ getFilePrefix c ++ s
|
|
_ -> getFilePrefix c ++ s
|
|
|
|
getBucketExportLocation :: RemoteConfig -> ExportLocation -> BucketObject
|
|
getBucketExportLocation c loc = getFilePrefix c ++ fromExportLocation loc
|
|
|
|
getBucketImportLocation :: RemoteConfig -> BucketObject -> Maybe ImportLocation
|
|
getBucketImportLocation c obj
|
|
-- The uuidFile should not be imported.
|
|
| obj == uuidfile = Nothing
|
|
-- Only import files that are under the fileprefix, when
|
|
-- one is configured.
|
|
| prefix `isPrefixOf` obj = Just $ mkImportLocation $ drop prefixlen obj
|
|
| otherwise = Nothing
|
|
where
|
|
prefix = getFilePrefix c
|
|
prefixlen = length prefix
|
|
uuidfile = uuidFile c
|
|
|
|
{- Internet Archive documentation limits filenames to a subset of ascii.
|
|
- While other characters seem to work now, this entity encodes everything
|
|
- else to avoid problems. -}
|
|
iaMunge :: String -> String
|
|
iaMunge = (>>= munge)
|
|
where
|
|
munge c
|
|
| isAsciiUpper c || isAsciiLower c || isNumber c = [c]
|
|
| c `elem` ("_-.\"" :: String) = [c]
|
|
| isSpace c = []
|
|
| otherwise = "&" ++ show (ord c) ++ ";"
|
|
|
|
configIA :: RemoteConfig -> Bool
|
|
configIA = maybe False isIAHost . M.lookup "host"
|
|
|
|
{- Hostname to use for archive.org S3. -}
|
|
iaHost :: HostName
|
|
iaHost = "s3.us.archive.org"
|
|
|
|
isIAHost :: HostName -> Bool
|
|
isIAHost h = ".archive.org" `isSuffixOf` map toLower h
|
|
|
|
iaItemUrl :: BucketName -> URLString
|
|
iaItemUrl b = "http://archive.org/details/" ++ b
|
|
|
|
iaPublicUrl :: S3Info -> BucketObject -> URLString
|
|
iaPublicUrl info = genericPublicUrl $
|
|
"http://archive.org/download/" ++ T.unpack (bucket info) ++ "/"
|
|
|
|
awsPublicUrl :: S3Info -> BucketObject -> URLString
|
|
awsPublicUrl info = genericPublicUrl $
|
|
"https://" ++ T.unpack (bucket info) ++ ".s3.amazonaws.com/"
|
|
|
|
genericPublicUrl :: URLString -> BucketObject -> URLString
|
|
genericPublicUrl baseurl p = baseurl Posix.</> p
|
|
|
|
genCredentials :: CredPair -> IO AWS.Credentials
|
|
genCredentials (keyid, secret) = AWS.Credentials
|
|
<$> pure (tobs keyid)
|
|
<*> pure (tobs secret)
|
|
<*> newIORef []
|
|
<*> (fmap tobs <$> getEnv "AWS_SESSION_TOKEN")
|
|
where
|
|
tobs = T.encodeUtf8 . T.pack
|
|
|
|
mkLocationConstraint :: AWS.Region -> S3.LocationConstraint
|
|
mkLocationConstraint "US" = S3.locationUsClassic
|
|
mkLocationConstraint r = r
|
|
|
|
debugMapper :: AWS.Logger
|
|
debugMapper level t = forward "S3" (T.unpack t)
|
|
where
|
|
forward = case level of
|
|
AWS.Debug -> debugM
|
|
AWS.Info -> infoM
|
|
AWS.Warning -> warningM
|
|
AWS.Error -> errorM
|
|
|
|
s3Info :: RemoteConfig -> S3Info -> [(String, String)]
|
|
s3Info c info = catMaybes
|
|
[ Just ("bucket", fromMaybe "unknown" (getBucketName c))
|
|
, Just ("endpoint", w82s (BS.unpack (S3.s3Endpoint s3c)))
|
|
, Just ("port", show (S3.s3Port s3c))
|
|
, Just ("protocol", map toLower (show (S3.s3Protocol s3c)))
|
|
, Just ("storage class", showstorageclass (getStorageClass c))
|
|
, if configIA c
|
|
then Just ("internet archive item", iaItemUrl $ fromMaybe "unknown" $ getBucketName c)
|
|
else Nothing
|
|
, Just ("partsize", maybe "unlimited" (roughSize storageUnits False) (getPartSize c))
|
|
, Just ("public", if public info then "yes" else "no")
|
|
, Just ("versioning", if versioning info then "yes" else "no")
|
|
]
|
|
where
|
|
s3c = s3Configuration c
|
|
showstorageclass (S3.OtherStorageClass t) = T.unpack t
|
|
showstorageclass sc = show sc
|
|
|
|
getPublicWebUrls :: UUID -> S3Info -> RemoteConfig -> Key -> Annex [URLString]
|
|
getPublicWebUrls u info c k = either (const []) id <$> getPublicWebUrls' u info c k
|
|
|
|
getPublicWebUrls' :: UUID -> S3Info -> RemoteConfig -> Key -> Annex (Either String [URLString])
|
|
getPublicWebUrls' u info c k
|
|
| not (public info) = return $ Left $
|
|
"S3 bucket does not allow public access; " ++ needS3Creds u
|
|
| exportTree c = if versioning info
|
|
then case publicurl info of
|
|
Just url -> getversionid (const $ genericPublicUrl url)
|
|
Nothing -> case host info of
|
|
Just h | h == AWS.s3DefaultHost ->
|
|
getversionid awsPublicUrl
|
|
_ -> return nopublicurl
|
|
else return (Left "exporttree used without versioning")
|
|
| otherwise = case getPublicUrlMaker info of
|
|
Just geturl -> return (Right [geturl $ bucketObject info k])
|
|
Nothing -> return nopublicurl
|
|
where
|
|
nopublicurl = Left "No publicurl is configured for this remote"
|
|
getversionid url = getS3VersionIDPublicUrls url info u k >>= \case
|
|
[] -> return (Left "Remote is configured to use versioning, but no S3 version ID is recorded for this key")
|
|
l -> return (Right l)
|
|
|
|
getPublicUrlMaker :: S3Info -> Maybe (BucketObject -> URLString)
|
|
getPublicUrlMaker info = case publicurl info of
|
|
Just url -> Just (genericPublicUrl url)
|
|
Nothing -> case host info of
|
|
Just h
|
|
| h == AWS.s3DefaultHost ->
|
|
Just (awsPublicUrl info)
|
|
| isIAHost h ->
|
|
Just (iaPublicUrl info)
|
|
_ -> Nothing
|
|
|
|
-- S3 uses a unique version id for each object stored on it.
|
|
--
|
|
-- The Object is included in this because retrieving a particular
|
|
-- version id involves a request for an object, so this keeps track of what
|
|
-- the object is.
|
|
data S3VersionID = S3VersionID S3.Object T.Text
|
|
deriving (Show)
|
|
|
|
-- smart constructor
|
|
mkS3VersionID :: S3.Object -> Maybe T.Text -> Maybe S3VersionID
|
|
mkS3VersionID o (Just t)
|
|
| T.null t = Nothing
|
|
-- AWS documentation says a version ID is at most 1024 bytes long.
|
|
-- Since they are stored in the git-annex branch, prevent them from
|
|
-- being very much larger than that.
|
|
| T.length t < 2048 = Just (S3VersionID o t)
|
|
| otherwise = Nothing
|
|
mkS3VersionID _ Nothing = Nothing
|
|
|
|
-- Format for storage in per-remote metadata.
|
|
--
|
|
-- A S3 version ID is "url ready" so does not contain '#' and so we'll use
|
|
-- that to separate it from the object id. (Could use a space, but spaces
|
|
-- in metadata values lead to an inefficient encoding.)
|
|
formatS3VersionID :: S3VersionID -> BS.ByteString
|
|
formatS3VersionID (S3VersionID o v) = T.encodeUtf8 v <> "#" <> T.encodeUtf8 o
|
|
|
|
-- Parse from value stored in per-remote metadata.
|
|
parseS3VersionID :: BS.ByteString -> Maybe S3VersionID
|
|
parseS3VersionID b = do
|
|
let (v, rest) = B8.break (== '#') b
|
|
o <- eitherToMaybe $ T.decodeUtf8' $ BS.drop 1 rest
|
|
mkS3VersionID o (eitherToMaybe $ T.decodeUtf8' v)
|
|
|
|
-- For a versioned bucket, the S3VersionID is used as the
|
|
-- ContentIdentifier.
|
|
mkS3VersionedContentIdentifier :: S3VersionID -> ContentIdentifier
|
|
mkS3VersionedContentIdentifier (S3VersionID _ v) =
|
|
ContentIdentifier $ T.encodeUtf8 v
|
|
|
|
mkS3VersionedContentIdentifier' :: S3.ObjectVersionInfo -> ContentIdentifier
|
|
mkS3VersionedContentIdentifier' =
|
|
ContentIdentifier . T.encodeUtf8 . S3.oviVersionId
|
|
|
|
-- S3 returns etags surrounded by double quotes, and the quotes may
|
|
-- be included here.
|
|
type S3Etag = T.Text
|
|
|
|
-- For an unversioned bucket, the S3Etag is instead used as the
|
|
-- ContentIdentifier. Prefixed by '#' since that cannot appear in a S3
|
|
-- version id.
|
|
mkS3UnversionedContentIdentifier :: S3Etag -> ContentIdentifier
|
|
mkS3UnversionedContentIdentifier t =
|
|
ContentIdentifier $ T.encodeUtf8 $ "#" <> T.filter (/= '"') t
|
|
|
|
-- Makes a GetObject request be guaranteed to get the object version
|
|
-- matching the ContentIdentifier, or fail.
|
|
limitGetToContentIdentifier :: ContentIdentifier -> S3.GetObject -> S3.GetObject
|
|
limitGetToContentIdentifier (ContentIdentifier v) req =
|
|
let t = either mempty id (T.decodeUtf8' v)
|
|
in case T.take 1 t of
|
|
"#" ->
|
|
let etag = T.drop 1 t
|
|
in req { S3.goIfMatch = Just etag }
|
|
_ -> req { S3.goVersionId = Just t }
|
|
|
|
setS3VersionID :: S3Info -> UUID -> Key -> Maybe S3VersionID -> Annex ()
|
|
setS3VersionID info u k vid
|
|
| versioning info = maybe noop (setS3VersionID' u k) vid
|
|
| otherwise = noop
|
|
|
|
setS3VersionID' :: UUID -> Key -> S3VersionID -> Annex ()
|
|
setS3VersionID' u k vid = addRemoteMetaData k $
|
|
RemoteMetaData u (updateMetaData s3VersionField v emptyMetaData)
|
|
where
|
|
v = mkMetaValue (CurrentlySet True) (formatS3VersionID vid)
|
|
|
|
getS3VersionID :: UUID -> Key -> Annex [S3VersionID]
|
|
getS3VersionID u k = do
|
|
(RemoteMetaData _ m) <- getCurrentRemoteMetaData u k
|
|
return $ mapMaybe parseS3VersionID $ map unwrap $ S.toList $
|
|
metaDataValues s3VersionField m
|
|
where
|
|
unwrap (MetaValue _ v) = v
|
|
|
|
s3VersionField :: MetaField
|
|
s3VersionField = mkMetaFieldUnchecked "V"
|
|
|
|
eitherS3VersionID :: S3Info -> UUID -> RemoteConfig -> Key -> S3.Object -> Annex (Either String (Either S3.Object S3VersionID))
|
|
eitherS3VersionID info u c k fallback
|
|
| versioning info = getS3VersionID u k >>= return . \case
|
|
[] -> if exportTree c
|
|
then Left "Remote is configured to use versioning, but no S3 version ID is recorded for this key"
|
|
else Right (Left fallback)
|
|
-- It's possible for a key to be stored multiple timees in
|
|
-- a bucket with different version IDs; only use one of them.
|
|
(v:_) -> Right (Right v)
|
|
| otherwise = return (Right (Left fallback))
|
|
|
|
s3VersionIDPublicUrl :: (S3Info -> BucketObject -> URLString) -> S3Info -> S3VersionID -> URLString
|
|
s3VersionIDPublicUrl mk info (S3VersionID obj vid) = mk info $ concat
|
|
[ T.unpack obj
|
|
, "?versionId="
|
|
, T.unpack vid -- version ID is "url ready" so no escaping needed
|
|
]
|
|
|
|
getS3VersionIDPublicUrls :: (S3Info -> BucketObject -> URLString) -> S3Info -> UUID -> Key -> Annex [URLString]
|
|
getS3VersionIDPublicUrls mk info u k =
|
|
map (s3VersionIDPublicUrl mk info) <$> getS3VersionID u k
|
|
|
|
-- Enable versioning on the bucket can only be done at init time;
|
|
-- setting versioning in a bucket that git-annex has already exported
|
|
-- files to risks losing the content of those un-versioned files.
|
|
enableBucketVersioning :: SetupStage -> S3Info -> RemoteConfig -> RemoteGitConfig -> UUID -> Annex ()
|
|
#if MIN_VERSION_aws(0,21,1)
|
|
enableBucketVersioning ss info c gc u = do
|
|
#else
|
|
enableBucketVersioning ss info _ _ _ = do
|
|
#endif
|
|
case ss of
|
|
Init -> when (versioning info) $
|
|
enableversioning (bucket info)
|
|
Enable oldc -> do
|
|
oldinfo <- extractS3Info oldc
|
|
when (versioning info /= versioning oldinfo) $
|
|
giveup "Cannot change versioning= of existing S3 remote."
|
|
where
|
|
enableversioning b = do
|
|
#if MIN_VERSION_aws(0,21,1)
|
|
showAction "enabling bucket versioning"
|
|
hdl <- mkS3HandleVar c gc u
|
|
withS3HandleOrFail u hdl $ \h ->
|
|
void $ liftIO $ runResourceT $ sendS3Handle h $
|
|
S3.putBucketVersioning b S3.VersioningEnabled
|
|
#else
|
|
showLongNote $ unlines
|
|
[ "This version of git-annex cannot auto-enable S3 bucket versioning."
|
|
, "You need to manually enable versioning in the S3 console"
|
|
, "for the bucket \"" ++ T.unpack b ++ "\""
|
|
, "https://docs.aws.amazon.com/AmazonS3/latest/user-guide/enable-versioning.html"
|
|
, "It's important you enable versioning before storing anything in the bucket!"
|
|
]
|
|
#endif
|
|
|
|
-- If the remote has versioning enabled, but the version ID is for some
|
|
-- reason not being recorded, it's not safe to perform an action that
|
|
-- will remove the unversioned file. The file may be the only copy of an
|
|
-- annex object.
|
|
--
|
|
-- This code could be removed eventually, since enableBucketVersioning
|
|
-- will avoid this situation. Before that was added, some remotes
|
|
-- were created without versioning, some unversioned files exported to
|
|
-- them, and then versioning enabled, and this is to avoid data loss in
|
|
-- those cases.
|
|
checkVersioning :: S3Info -> UUID -> Key -> Annex Bool -> Annex Bool
|
|
checkVersioning info u k a
|
|
| versioning info = getS3VersionID u k >>= \case
|
|
[] -> do
|
|
warning $ "Remote is configured to use versioning, but no S3 version ID is recorded for this key, so it cannot safely be modified."
|
|
return False
|
|
_ -> a
|
|
| otherwise = a
|
|
|