+-- #prune
+
+-- | Repository of the resources in httpd.
module Network.HTTP.Lucu.Resource.Tree
( ResourceDef(..)
, ResTree
-- があれば、假に "/aaa/bbb/ccc" に何らかのリソースがあったとしても必ず
-- "/aaa/bbb" が撰ばれる。"/aaa/bbb" のリソースが貪欲でなければ、それは
-- 無視される。
+
+-- | 'ResourceDef' is basically a set of
+-- 'Network.HTTP.Lucu.Resource.Resource' monads for each HTTP methods.
data ResourceDef = ResourceDef {
+ -- | Whether to run a 'Network.HTTP.Lucu.Resource.Resource' on a
+ -- native thread (spawned using @forkOS@) or to run it on a user
+ -- thread (spanwed using @forkIO@). Generally you don't
resUsesNativeThread :: Bool
+ -- | Whether to be greedy or not.
+ --
+ -- Say a client is trying to access \/aaa\/bbb\/ccc. If there is a
+ -- greedy resource at \/aaa\/bbb, it is always chosen even if
+ -- there is another resource at \/aaa\/bbb\/ccc. If the resource
+ -- at \/aaa\/bbb is not greedy, it is just ignored. Greedy
+ -- resource is like a CGI script.
, resIsGreedy :: Bool
+ -- | A 'Network.HTTP.Lucu.Resource.Resource' to be run when a GET
+ -- request comes for the resource path. If 'resGet' is Nothing,
+ -- the system responds \"405 Method Not Allowed\" for GET
+ -- requests.
+ --
+ -- It also runs for HEAD request if the 'resHead' is Nothing. In
+ -- this case 'Network.HTTP.Lucu.Resource.output' and such like
+ -- don't actually write a response body.
, resGet :: Maybe (Resource ())
+ -- | A 'Network.HTTP.Lucu.Resource.Resource' to be run when a HEAD
+ -- request comes for the resource path. If 'resHead' is Nothing,
+ -- the system runs 'resGet' instead. If 'resGet' is also Nothing,
+ -- the system responds \"405 Method Not Allowed\" for HEAD
+ -- requests.
, resHead :: Maybe (Resource ())
+ -- | A 'Network.HTTP.Lucu.Resource.Resource' to be run when a POST
+ -- request comes for the resource path. If 'resPost' is Nothing,
+ -- the system responds \"405 Method Not Allowed\" for POST
+ -- requests.
, resPost :: Maybe (Resource ())
+ -- | A 'Network.HTTP.Lucu.Resource.Resource' to be run when a PUT
+ -- request comes for the resource path. If 'resPut' is Nothing,
+ -- the system responds \"405 Method Not Allowed\" for PUT
+ -- requests.
, resPut :: Maybe (Resource ())
+ -- | A 'Network.HTTP.Lucu.Resource.Resource' to be run when a
+ -- DELETE request comes for the resource path. If 'resDelete' is
+ -- Nothing, the system responds \"405 Method Not Allowed\" for
+ -- DELETE requests.
, resDelete :: Maybe (Resource ())
}
+
+-- | 'ResTree' is an opaque structure which is a map from resource
+-- path to 'ResourceDef'.
type ResTree = ResNode -- root だから Map ではない
type ResSubtree = Map String ResNode
data ResNode = ResNode (Maybe ResourceDef) ResSubtree
-
+-- | 'mkResTree' converts a list of @(path, def)@ to a 'ResTree' e.g.
+--
+-- @
+-- mkResTree [ ([] , 'Network.HTTP.Lucu.StaticFile.staticFile' \"\/usr\/include\/stdio.h\" ) -- \/
+-- , ([\"unistd\"], 'Network.HTTP.Lucu.StaticFile.staticFile' \"\/usr\/include\/unistd.h\") -- \/unistd
+-- ]
+-- @
mkResTree :: [ ([String], ResourceDef) ] -> ResTree
mkResTree list = processRoot list
where
mapM_ (\ (name, value) -> setHeader name value) $ aboHeaders abo
output $ abortPage conf reqM res abo
else
- hPutStrLn stderr $ show abo
+ when (cnfDumpTooLateAbortionToStderr $ itrConfig itr)
+ $ hPutStrLn stderr $ show abo
flip runReaderT itr $ driftTo Done