1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
|
-- | This is the module which binds it all together
--
{-# LANGUAGE GeneralizedNewtypeDeriving #-}
module Hakyll.Core.Run
( run
) where
import Prelude hiding (reverse)
import Control.Monad (filterM)
import Control.Monad.Trans (liftIO)
import Control.Applicative (Applicative, (<$>))
import Control.Monad.Reader (ReaderT, runReaderT, ask)
import Control.Monad.State.Strict (StateT, evalStateT, get, modify)
import Control.Arrow ((&&&))
import qualified Data.Map as M
import Data.Monoid (mempty, mappend)
import System.FilePath ((</>))
import Data.Set (Set)
import qualified Data.Set as S
import Hakyll.Core.Routes
import Hakyll.Core.Identifier
import Hakyll.Core.Util.File
import Hakyll.Core.Compiler
import Hakyll.Core.Compiler.Internal
import Hakyll.Core.ResourceProvider
import Hakyll.Core.ResourceProvider.FileResourceProvider
import Hakyll.Core.Rules.Internal
import Hakyll.Core.DirectedGraph
import Hakyll.Core.DirectedGraph.DependencySolver
import Hakyll.Core.Writable
import Hakyll.Core.Store
import Hakyll.Core.Configuration
import Hakyll.Core.Logger
-- | Run all rules needed, return the rule set used
--
run :: HakyllConfiguration -> Rules -> IO RuleSet
run configuration rules = do
logger <- makeLogger
section logger "Initialising"
store <- timed logger "Creating store" $
makeStore $ storeDirectory configuration
provider <- timed logger "Creating provider" $
fileResourceProvider configuration
let ruleSet = runRules rules provider
compilers = rulesCompilers ruleSet
-- Extract the reader/state
reader = unRuntime $ addNewCompilers [] compilers
state' = runReaderT reader $ env logger ruleSet provider store
evalStateT state' state
-- Flush and return
flushLogger logger
return ruleSet
where
env logger ruleSet provider store = RuntimeEnvironment
{ hakyllLogger = logger
, hakyllConfiguration = configuration
, hakyllRoutes = rulesRoutes ruleSet
, hakyllResourceProvider = provider
, hakyllStore = store
}
state = RuntimeState
{ hakyllModified = S.empty
, hakyllGraph = mempty
}
data RuntimeEnvironment = RuntimeEnvironment
{ hakyllLogger :: Logger
, hakyllConfiguration :: HakyllConfiguration
, hakyllRoutes :: Routes
, hakyllResourceProvider :: ResourceProvider
, hakyllStore :: Store
}
data RuntimeState = RuntimeState
{ hakyllModified :: Set Identifier
, hakyllGraph :: DirectedGraph Identifier
}
newtype Runtime a = Runtime
{ unRuntime :: ReaderT RuntimeEnvironment (StateT RuntimeState IO) a
} deriving (Functor, Applicative, Monad)
-- | Return a set of modified identifiers
--
modified :: ResourceProvider -- ^ Resource provider
-> Store -- ^ Store
-> [Identifier] -- ^ Identifiers to check
-> IO (Set Identifier) -- ^ Modified resources
modified provider store ids = fmap S.fromList $ flip filterM ids $ \id' ->
if resourceExists provider id'
then resourceModified provider (Resource id') store
else return False
-- | Add a number of compilers and continue using these compilers
--
addNewCompilers :: [(Identifier, Compiler () CompileRule)]
-- ^ Remaining compilers yet to be run
-> [(Identifier, Compiler () CompileRule)]
-- ^ Compilers to add
-> Runtime ()
addNewCompilers oldCompilers newCompilers = Runtime $ do
-- Get some information
logger <- hakyllLogger <$> ask
section logger "Adding new compilers"
provider <- hakyllResourceProvider <$> ask
store <- hakyllStore <$> ask
let -- All compilers
compilers = oldCompilers ++ newCompilers
-- Get all dependencies for the compilers
dependencies = flip map compilers $ \(id', compiler) ->
let deps = runCompilerDependencies compiler id' provider
in (id', deps)
-- Create a compiler map (Id -> Compiler)
compilerMap = M.fromList compilers
-- Create the dependency graph
currentGraph = fromList dependencies
-- Find the old graph and append the new graph to it. This forms the
-- complete graph
completeGraph <- timed logger "Creating graph" $
mappend currentGraph . hakyllGraph <$> get
orderedCompilers <- timed logger "Solving dependencies" $ do
-- Check which items are up-to-date. This only needs to happen for the new
-- compilers
oldModified <- hakyllModified <$> get
newModified <- liftIO $ modified provider store $ map fst newCompilers
let modified' = oldModified `S.union` newModified
-- Find obsolete items. Every item that is reachable from a modified
-- item is considered obsolete. From these obsolete items, we are only
-- interested in ones that are in the current subgraph.
obsolete = S.filter (`member` currentGraph)
$ reachableNodes modified' $ reverse completeGraph
-- Solve the graph and retain only the obsolete items
ordered = filter (`S.member` obsolete) $ solveDependencies currentGraph
-- Update the state
modify $ updateState modified' completeGraph
-- Join the order with the compilers again
return $ map (id &&& (compilerMap M.!)) ordered
-- Now run the ordered list of compilers
unRuntime $ runCompilers orderedCompilers
where
-- Add the modified information for the new compilers
updateState modified' graph state = state
{ hakyllModified = modified'
, hakyllGraph = graph
}
runCompilers :: [(Identifier, Compiler () CompileRule)]
-- ^ Ordered list of compilers
-> Runtime ()
-- ^ No result
runCompilers [] = return ()
runCompilers ((id', compiler) : compilers) = Runtime $ do
-- Obtain information
logger <- hakyllLogger <$> ask
routes <- hakyllRoutes <$> ask
provider <- hakyllResourceProvider <$> ask
store <- hakyllStore <$> ask
modified' <- hakyllModified <$> get
section logger $ "Compiling " ++ show id'
let -- Check if the resource was modified
isModified = id' `S.member` modified'
-- Run the compiler
result <- timed logger "Total compile time" $ liftIO $
runCompiler compiler id' provider routes store isModified logger
case result of
-- Compile rule for one item, easy stuff
CompileRule compiled -> do
case runRoutes routes id' of
Nothing -> return ()
Just url -> timed logger ("Routing to " ++ url) $ do
destination <-
destinationDirectory . hakyllConfiguration <$> ask
let path = destination </> url
liftIO $ makeDirectories path
liftIO $ write path compiled
-- Continue for the remaining compilers
unRuntime $ runCompilers compilers
-- Metacompiler, slightly more complicated
MetaCompileRule newCompilers ->
-- Actually I was just kidding, it's not hard at all
unRuntime $ addNewCompilers compilers newCompilers
|
