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
|
{- git-annex command
-
- Copyright 2010 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Command.Map where
import Control.Exception.Extensible
import qualified Data.Map as M
import Common.Annex
import Command
import qualified Git
import Annex.UUID
import Logs.UUID
import Logs.Trust
import Annex.Ssh
import qualified Utility.Dot as Dot
-- a link from the first repository to the second (its remote)
data Link = Link Git.Repo Git.Repo
command :: [Command]
command = [repoCommand "map" paramNothing seek "generate map of repositories"]
seek :: [CommandSeek]
seek = [withNothing start]
start :: CommandStart
start = do
g <- gitRepo
rs <- spider g
umap <- uuidMap
trusted <- trustGet Trusted
liftIO $ writeFile file (drawMap rs umap trusted)
showLongNote $ "running: dot -Tx11 " ++ file
showOutput
r <- liftIO $ boolSystem "dot" [Param "-Tx11", File file]
next $ next $ return r
where
file = "map.dot"
{- Generates a graph for dot(1). Each repository, and any other uuids, are
- displayed as a node, and each of its remotes is represented as an edge
- pointing at the node for the remote.
-
- The order nodes are added to the graph matters, since dot will draw
- the first ones near to the top and left. So it looks better to put
- the repositories first, followed by uuids that were not matched
- to a repository.
-}
drawMap :: [Git.Repo] -> M.Map UUID String -> [UUID] -> String
drawMap rs umap ts = Dot.graph $ repos ++ trusted ++ others
where
repos = map (node umap rs) rs
ruuids = ts ++ map getUncachedUUID rs
others = map (unreachable . uuidnode) $
filter (`notElem` ruuids) (M.keys umap)
trusted = map (trustworthy . uuidnode) ts
uuidnode u = Dot.graphNode u $ M.findWithDefault "" u umap
hostname :: Git.Repo -> String
hostname r
| Git.repoIsUrl r = Git.urlHost r
| otherwise = "localhost"
basehostname :: Git.Repo -> String
basehostname r = head $ split "." $ hostname r
{- A name to display for a repo. Uses the name from uuid.log if available,
- or the remote name if not. -}
repoName :: M.Map UUID String -> Git.Repo -> String
repoName umap r
| null repouuid = fallback
| otherwise = M.findWithDefault fallback repouuid umap
where
repouuid = getUncachedUUID r
fallback = fromMaybe "unknown" $ Git.repoRemoteName r
{- A unique id for the node for a repo. Uses the annex.uuid if available. -}
nodeId :: Git.Repo -> String
nodeId r =
case getUncachedUUID r of
"" -> Git.repoLocation r
u -> u
{- A node representing a repo. -}
node :: M.Map UUID String -> [Git.Repo] -> Git.Repo -> String
node umap fullinfo r = unlines $ n:edges
where
n = Dot.subGraph (hostname r) (basehostname r) "lightblue" $
decorate $ Dot.graphNode (nodeId r) (repoName umap r)
edges = map (edge umap fullinfo r) (Git.remotes r)
decorate
| Git.configMap r == M.empty = unreachable
| otherwise = reachable
{- An edge between two repos. The second repo is a remote of the first. -}
edge :: M.Map UUID String -> [Git.Repo] -> Git.Repo -> Git.Repo -> String
edge umap fullinfo from to =
Dot.graphEdge (nodeId from) (nodeId fullto) edgename
where
-- get the full info for the remote, to get its UUID
fullto = findfullinfo to
findfullinfo n =
case filter (same n) fullinfo of
[] -> n
(n':_) -> n'
{- Only name an edge if the name is different than the name
- that will be used for the destination node, and is
- different from its hostname. (This reduces visual clutter.) -}
edgename = maybe Nothing calcname $ Git.repoRemoteName to
calcname n
| n `elem` [repoName umap fullto, hostname fullto] = Nothing
| otherwise = Just n
unreachable :: String -> String
unreachable = Dot.fillColor "red"
reachable :: String -> String
reachable = Dot.fillColor "white"
trustworthy :: String -> String
trustworthy = Dot.fillColor "green"
{- Recursively searches out remotes starting with the specified repo. -}
spider :: Git.Repo -> Annex [Git.Repo]
spider r = spider' [r] []
spider' :: [Git.Repo] -> [Git.Repo] -> Annex [Git.Repo]
spider' [] known = return known
spider' (r:rs) known
| any (same r) known = spider' rs known
| otherwise = do
r' <- scan r
-- The remotes will be relative to r', and need to be
-- made absolute for later use.
let remotes = map (absRepo r') (Git.remotes r')
let r'' = Git.remotesAdd r' remotes
spider' (rs ++ remotes) (r'':known)
absRepo :: Git.Repo -> Git.Repo -> Git.Repo
absRepo reference r
| Git.repoIsUrl reference = Git.localToUrl reference r
| otherwise = r
{- Checks if two repos are the same. -}
same :: Git.Repo -> Git.Repo -> Bool
same a b
| both Git.repoIsSsh = matching Git.urlAuthority && matching Git.workTree
| both Git.repoIsUrl && neither Git.repoIsSsh = matching show
| neither Git.repoIsSsh = matching Git.workTree
| otherwise = False
where
matching t = t a == t b
both t = t a && t b
neither t = not (t a) && not (t b)
{- reads the config of a remote, with progress display -}
scan :: Git.Repo -> Annex Git.Repo
scan r = do
showStart "map" $ Git.repoDescribe r
v <- tryScan r
case v of
Just r' -> do
showEndOk
return r'
Nothing -> do
showOutput
showEndFail
return r
{- tries to read the config of a remote, returning it only if it can
- be accessed -}
tryScan :: Git.Repo -> Annex (Maybe Git.Repo)
tryScan r
| Git.repoIsSsh r = sshscan
| Git.repoIsUrl r = return Nothing
| otherwise = safely $ Git.configRead r
where
safely a = do
result <- liftIO (try a :: IO (Either SomeException Git.Repo))
case result of
Left _ -> return Nothing
Right r' -> return $ Just r'
pipedconfig cmd params = safely $
pOpen ReadFromPipe cmd (toCommand params) $
Git.hConfigRead r
configlist =
onRemote r (pipedconfig, Nothing) "configlist" []
manualconfiglist = do
let sshcmd =
"cd " ++ shellEscape(Git.workTree r) ++ " && " ++
"git config --list"
sshparams <- sshToRepo r [Param sshcmd]
liftIO $ pipedconfig "ssh" sshparams
-- First, try sshing and running git config manually,
-- only fall back to git-annex-shell configlist if that
-- fails.
--
-- This is done for two reasons, first I'd like this
-- subcommand to be usable on non-git-annex repos.
-- Secondly, configlist doesn't include information about
-- the remote's remotes.
sshscan = do
sshnote
v <- manualconfiglist
case v of
Nothing -> do
sshnote
configlist
ok -> return ok
sshnote = do
showAction "sshing"
showOutput
|
