Hackage.Security.Client.Repository.Cache

The files we cache from the repository

Both the Local and the Remote repositories make use of this module.

Documentation

data Cache

Location and layout of the local cache

Constructors

Cache

Fields

• cacheRoot :: Path Absolute
• cacheLayout :: CacheLayout

getCached :: Cache -> CachedFile -> IO (Maybe (Path Absolute))

Get a cached file (if available)

getCachedRoot :: Cache -> IO (Path Absolute)

Get the cached root

Calling getCachedRoot without root info available is a programmer error and will result in an unchecked exception. See requiresBootstrap.

getCachedIndex :: Cache -> Format f -> IO (Maybe (Path Absolute))

Get the cached index (if available)

clearCache :: Cache -> IO ()

Delete a previously downloaded remote file

withIndex :: Cache -> (Handle -> IO a) -> IO a

getIndexIdx :: Cache -> IO TarIndex

cacheRemoteFile :: DownloadedFile down => Cache -> down typ -> Format f -> IsCached typ -> IO ()

Cache a previously downloaded remote file

lockCache :: Cache -> IO () -> IO ()

Lock the cache

This avoids two concurrent processes updating the cache at the same time, provided they both take the lock.

lockCacheWithLogger :: (LogMessage -> IO ()) -> Cache -> IO () -> IO ()

Variant of lockCache which emits LogMessages before and after a possibly blocking file-locking system call

Since: 0.6.0