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
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
|
--------------------------------------------------------------------------------
module Hakyll.Core.Runtime
( run
) where
--------------------------------------------------------------------------------
import Control.Applicative ((<$>))
import Control.Monad (filterM)
import Control.Monad.Error (ErrorT, runErrorT, throwError)
import Control.Monad.Reader (ask)
import Control.Monad.RWS (RWST, runRWST)
import Control.Monad.State (get, modify)
import Control.Monad.Trans (liftIO)
import Data.Map (Map)
import qualified Data.Map as M
import Data.Monoid (mempty)
import Data.Set (Set)
import qualified Data.Set as S
import System.Exit (ExitCode (..), exitWith)
import System.FilePath ((</>))
--------------------------------------------------------------------------------
import Hakyll.Core.Compiler.Internal
import Hakyll.Core.Compiler.Require
import Hakyll.Core.Configuration
import Hakyll.Core.Dependencies
import Hakyll.Core.Identifier
import Hakyll.Core.Item.SomeItem
import Hakyll.Core.Logger (Logger)
import qualified Hakyll.Core.Logger as Logger
import Hakyll.Core.Provider
import Hakyll.Core.Routes
import Hakyll.Core.Rules.Internal
import Hakyll.Core.Store (Store)
import qualified Hakyll.Core.Store as Store
import Hakyll.Core.Util.File
import Hakyll.Core.Writable
--------------------------------------------------------------------------------
run :: Configuration -> Rules a -> IO RuleSet
run config rules = do
-- Initialization
logger <- Logger.new (verbosity config)
Logger.header logger "Initialising..."
Logger.message logger "Creating store..."
store <- Store.new (inMemoryCache config) $ storeDirectory config
Logger.message logger "Creating provider..."
provider <- newProvider store (shouldIgnoreFile config) $
providerDirectory config
Logger.message logger "Running rules..."
ruleSet <- runRules rules provider
-- Get old facts
mOldFacts <- Store.get store factsKey
let (oldFacts) = case mOldFacts of Store.Found f -> f
_ -> mempty
-- Build runtime read/state
let compilers = rulesCompilers ruleSet
read' = RuntimeRead
{ runtimeConfiguration = config
, runtimeLogger = logger
, runtimeProvider = provider
, runtimeStore = store
, runtimeRoutes = rulesRoutes ruleSet
, runtimeUniverse = M.fromList compilers
}
state = RuntimeState
{ runtimeDone = S.empty
, runtimeTodo = M.empty
, runtimeFacts = oldFacts
}
-- Run the program and fetch the resulting state
result <- runErrorT $ runRWST build read' state
case result of
Left e -> do
Logger.error logger e
Logger.flush logger
exitWith $ ExitFailure 1
Right (_, s, _) -> do
Store.set store factsKey $ runtimeFacts s
Logger.flush logger
return ruleSet
where
factsKey = ["Hakyll.Core.Runtime.run", "facts"]
--------------------------------------------------------------------------------
data RuntimeRead = RuntimeRead
{ runtimeConfiguration :: Configuration
, runtimeLogger :: Logger
, runtimeProvider :: Provider
, runtimeStore :: Store
, runtimeRoutes :: Routes
, runtimeUniverse :: Map Identifier (Compiler SomeItem)
}
--------------------------------------------------------------------------------
data RuntimeState = RuntimeState
{ runtimeDone :: Set Identifier
, runtimeTodo :: Map Identifier (Compiler SomeItem)
, runtimeFacts :: DependencyFacts
}
--------------------------------------------------------------------------------
type Runtime a = RWST RuntimeRead () RuntimeState (ErrorT String IO) a
--------------------------------------------------------------------------------
build :: Runtime ()
build = do
logger <- runtimeLogger <$> ask
Logger.header logger "Checking for out-of-date items"
scheduleOutOfDate
Logger.header logger "Compiling"
pickAndChase
Logger.header logger "Success"
--------------------------------------------------------------------------------
scheduleOutOfDate :: Runtime ()
scheduleOutOfDate = do
logger <- runtimeLogger <$> ask
provider <- runtimeProvider <$> ask
universe <- runtimeUniverse <$> ask
facts <- runtimeFacts <$> get
todo <- runtimeTodo <$> get
let identifiers = M.keys universe
modified <- fmap S.fromList $ flip filterM identifiers $
liftIO . resourceModified provider
let (ood, facts', msgs) = outOfDate identifiers modified facts
todo' = M.filterWithKey
(\id' _ -> id' `S.member` ood) universe
-- Print messages
mapM_ (Logger.debug logger) msgs
-- Update facts and todo items
modify $ \s -> s
{ runtimeDone = runtimeDone s `S.union`
(S.fromList identifiers `S.difference` ood)
, runtimeTodo = todo `M.union` todo'
, runtimeFacts = facts'
}
--------------------------------------------------------------------------------
pickAndChase :: Runtime ()
pickAndChase = do
todo <- runtimeTodo <$> get
case M.minViewWithKey todo of
Nothing -> return ()
Just ((id', _), _) -> do
chase [] id'
pickAndChase
--------------------------------------------------------------------------------
chase :: [Identifier] -> Identifier -> Runtime ()
chase trail id'
| id' `elem` trail = return () -- Cycle detected!
| otherwise = do
logger <- runtimeLogger <$> ask
todo <- runtimeTodo <$> get
provider <- runtimeProvider <$> ask
universe <- runtimeUniverse <$> ask
routes <- runtimeRoutes <$> ask
store <- runtimeStore <$> ask
config <- runtimeConfiguration <$> ask
Logger.debug logger $ "Processing " ++ show id'
let compiler = todo M.! id'
read' = CompilerRead
{ compilerUnderlying = id'
, compilerProvider = provider
, compilerUniverse = M.keysSet universe
, compilerRoutes = routes
, compilerStore = store
, compilerLogger = logger
}
result <- liftIO $ runCompiler compiler read'
case result of
-- Rethrow error
CompilerError e -> throwError e
-- Huge success
CompilerDone (SomeItem item) cwrite -> do
-- TODO: Sanity check on itemIdentifier?
let facts = compilerDependencies cwrite
cacheHits
| compilerCacheHits cwrite <= 0 = "updated"
| otherwise = "cached "
-- Print some info
Logger.message logger $ cacheHits ++ " " ++ show id'
-- Write if necessary
case runRoutes routes id' of
Nothing -> return ()
Just url -> do
let path = destinationDirectory config </> url
liftIO $ makeDirectories path
liftIO $ write path item
Logger.debug logger $ "Routed to " ++ path
-- Save! (For load)
liftIO $ save store item
-- Update state
modify $ \s -> s
{ runtimeDone = S.insert id' (runtimeDone s)
, runtimeTodo = M.delete id' (runtimeTodo s)
, runtimeFacts = M.insert id' facts (runtimeFacts s)
}
-- Try something else first
CompilerRequire dep c -> do
-- Update the compiler so we don't execute it twice
depDone <- (dep `S.member`) . runtimeDone <$> get
modify $ \s -> s
{ runtimeTodo = M.insert id'
(if depDone then c else compilerResult result)
(runtimeTodo s)
}
-- If the required item is already compiled, continue, or, start
-- chasing that
if depDone then chase trail id' else chase (id' : trail) dep
|
