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{- git-annex cluster log
-
- Copyright 2024 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU AGPL version 3 or higher.
-}
{-# LANGUAGE OverloadedStrings, TupleSections #-}
module Logs.Cluster (
module Types.Cluster,
getClusters,
loadClusters,
preLoadClusters,
recordCluster,
) where
import qualified Annex
import Annex.Common
import Types.Cluster
import Logs.Cluster.Basic
import Logs.Trust
import qualified Data.Map as M
import qualified Data.Set as S
getClusters :: Annex Clusters
getClusters = maybe loadClusters id =<< Annex.getState Annex.clusters
{- This works around a module dependency loop. -}
preLoadClusters :: Annex ()
preLoadClusters = Annex.changeState $ \s ->
s { Annex.clusters = Just loadClusters }
{- Loads the clusters and caches it for later.
-
- This takes care of removing dead nodes from clusters,
- to avoid inserting the cluster uuid into the location
- log when only dead nodes contain the content of a key.
-}
loadClusters :: Annex Clusters
loadClusters = do
dead <- (S.fromList . map ClusterNodeUUID)
<$> trustGet DeadTrusted
clusters <- getClustersWith (M.map (`S.difference` dead))
Annex.changeState $ \s -> s { Annex.clusters = Just (pure clusters) }
return clusters
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