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@@ -1,193 +1,193 | |||||
1 | # wireprotosimplecache.py - Extension providing in-memory wire protocol cache |
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1 | # wireprotosimplecache.py - Extension providing in-memory wire protocol cache | |
2 | # |
|
2 | # | |
3 | # Copyright 2018 Gregory Szorc <gregory.szorc@gmail.com> |
|
3 | # Copyright 2018 Gregory Szorc <gregory.szorc@gmail.com> | |
4 | # |
|
4 | # | |
5 | # This software may be used and distributed according to the terms of the |
|
5 | # This software may be used and distributed according to the terms of the | |
6 | # GNU General Public License version 2 or any later version. |
|
6 | # GNU General Public License version 2 or any later version. | |
7 |
|
7 | |||
8 | from __future__ import absolute_import |
|
8 | from __future__ import absolute_import | |
9 |
|
9 | |||
10 | from mercurial import ( |
|
10 | from mercurial import ( | |
11 | extensions, |
|
11 | extensions, | |
12 | registrar, |
|
12 | registrar, | |
13 | repository, |
|
13 | repository, | |
14 | util, |
|
14 | util, | |
15 | wireprotoserver, |
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15 | wireprotoserver, | |
16 | wireprototypes, |
|
16 | wireprototypes, | |
17 | wireprotov2server, |
|
17 | wireprotov2server, | |
18 | ) |
|
18 | ) | |
19 | from mercurial.utils import ( |
|
19 | from mercurial.utils import ( | |
20 | interfaceutil, |
|
20 | interfaceutil, | |
21 | stringutil, |
|
21 | stringutil, | |
22 | ) |
|
22 | ) | |
23 |
|
23 | |||
24 | CACHE = None |
|
24 | CACHE = None | |
25 |
|
25 | |||
26 | configtable = {} |
|
26 | configtable = {} | |
27 | configitem = registrar.configitem(configtable) |
|
27 | configitem = registrar.configitem(configtable) | |
28 |
|
28 | |||
29 | configitem('simplecache', 'cacheapi', |
|
29 | configitem('simplecache', 'cacheapi', | |
30 | default=False) |
|
30 | default=False) | |
31 | configitem('simplecache', 'cacheobjects', |
|
31 | configitem('simplecache', 'cacheobjects', | |
32 | default=False) |
|
32 | default=False) | |
33 | configitem('simplecache', 'redirectsfile', |
|
33 | configitem('simplecache', 'redirectsfile', | |
34 | default=None) |
|
34 | default=None) | |
35 |
|
35 | |||
36 | # API handler that makes cached keys available. |
|
36 | # API handler that makes cached keys available. | |
37 | def handlecacherequest(rctx, req, res, checkperm, urlparts): |
|
37 | def handlecacherequest(rctx, req, res, checkperm, urlparts): | |
38 | if rctx.repo.ui.configbool('simplecache', 'cacheobjects'): |
|
38 | if rctx.repo.ui.configbool('simplecache', 'cacheobjects'): | |
39 | res.status = b'500 Internal Server Error' |
|
39 | res.status = b'500 Internal Server Error' | |
40 | res.setbodybytes(b'cacheobjects not supported for api server') |
|
40 | res.setbodybytes(b'cacheobjects not supported for api server') | |
41 | return |
|
41 | return | |
42 |
|
42 | |||
43 | if not urlparts: |
|
43 | if not urlparts: | |
44 | res.status = b'200 OK' |
|
44 | res.status = b'200 OK' | |
45 | res.headers[b'Content-Type'] = b'text/plain' |
|
45 | res.headers[b'Content-Type'] = b'text/plain' | |
46 | res.setbodybytes(b'simple cache server') |
|
46 | res.setbodybytes(b'simple cache server') | |
47 | return |
|
47 | return | |
48 |
|
48 | |||
49 | key = b'/'.join(urlparts) |
|
49 | key = b'/'.join(urlparts) | |
50 |
|
50 | |||
51 | if key not in CACHE: |
|
51 | if key not in CACHE: | |
52 | res.status = b'404 Not Found' |
|
52 | res.status = b'404 Not Found' | |
53 | res.headers[b'Content-Type'] = b'text/plain' |
|
53 | res.headers[b'Content-Type'] = b'text/plain' | |
54 | res.setbodybytes(b'key not found in cache') |
|
54 | res.setbodybytes(b'key not found in cache') | |
55 | return |
|
55 | return | |
56 |
|
56 | |||
57 | res.status = b'200 OK' |
|
57 | res.status = b'200 OK' | |
58 | res.headers[b'Content-Type'] = b'application/mercurial-cbor' |
|
58 | res.headers[b'Content-Type'] = b'application/mercurial-cbor' | |
59 | res.setbodybytes(CACHE[key]) |
|
59 | res.setbodybytes(CACHE[key]) | |
60 |
|
60 | |||
61 | def cachedescriptor(req, repo): |
|
61 | def cachedescriptor(req, repo): | |
62 | return {} |
|
62 | return {} | |
63 |
|
63 | |||
64 | wireprotoserver.API_HANDLERS[b'simplecache'] = { |
|
64 | wireprotoserver.API_HANDLERS[b'simplecache'] = { | |
65 | 'config': (b'simplecache', b'cacheapi'), |
|
65 | 'config': (b'simplecache', b'cacheapi'), | |
66 | 'handler': handlecacherequest, |
|
66 | 'handler': handlecacherequest, | |
67 | 'apidescriptor': cachedescriptor, |
|
67 | 'apidescriptor': cachedescriptor, | |
68 | } |
|
68 | } | |
69 |
|
69 | |||
70 | @interfaceutil.implementer(repository.iwireprotocolcommandcacher) |
|
70 | @interfaceutil.implementer(repository.iwireprotocolcommandcacher) | |
71 | class memorycacher(object): |
|
71 | class memorycacher(object): | |
72 | def __init__(self, ui, command, encodefn, redirecttargets, redirecthashes, |
|
72 | def __init__(self, ui, command, encodefn, redirecttargets, redirecthashes, | |
73 | req): |
|
73 | req): | |
74 | self.ui = ui |
|
74 | self.ui = ui | |
75 | self.encodefn = encodefn |
|
75 | self.encodefn = encodefn | |
76 | self.redirecttargets = redirecttargets |
|
76 | self.redirecttargets = redirecttargets | |
77 | self.redirecthashes = redirecthashes |
|
77 | self.redirecthashes = redirecthashes | |
78 | self.req = req |
|
78 | self.req = req | |
79 | self.key = None |
|
79 | self.key = None | |
80 | self.cacheobjects = ui.configbool('simplecache', 'cacheobjects') |
|
80 | self.cacheobjects = ui.configbool('simplecache', 'cacheobjects') | |
81 | self.cacheapi = ui.configbool('simplecache', 'cacheapi') |
|
81 | self.cacheapi = ui.configbool('simplecache', 'cacheapi') | |
82 | self.buffered = [] |
|
82 | self.buffered = [] | |
83 |
|
83 | |||
84 | ui.log('simplecache', 'cacher constructed for %s\n', command) |
|
84 | ui.log('simplecache', 'cacher constructed for %s\n', command) | |
85 |
|
85 | |||
86 | def __enter__(self): |
|
86 | def __enter__(self): | |
87 | return self |
|
87 | return self | |
88 |
|
88 | |||
89 | def __exit__(self, exctype, excvalue, exctb): |
|
89 | def __exit__(self, exctype, excvalue, exctb): | |
90 | if exctype: |
|
90 | if exctype: | |
91 | self.ui.log('simplecache', 'cacher exiting due to error\n') |
|
91 | self.ui.log('simplecache', 'cacher exiting due to error\n') | |
92 |
|
92 | |||
93 | def adjustcachekeystate(self, state): |
|
93 | def adjustcachekeystate(self, state): | |
94 | # Needed in order to make tests deterministic. Don't copy this |
|
94 | # Needed in order to make tests deterministic. Don't copy this | |
95 | # pattern for production caches! |
|
95 | # pattern for production caches! | |
96 | del state[b'repo'] |
|
96 | del state[b'repo'] | |
97 |
|
97 | |||
98 | def setcachekey(self, key): |
|
98 | def setcachekey(self, key): | |
99 | self.key = key |
|
99 | self.key = key | |
100 | return True |
|
100 | return True | |
101 |
|
101 | |||
102 | def lookup(self): |
|
102 | def lookup(self): | |
103 | if self.key not in CACHE: |
|
103 | if self.key not in CACHE: | |
104 | self.ui.log('simplecache', 'cache miss for %s\n', self.key) |
|
104 | self.ui.log('simplecache', 'cache miss for %s\n', self.key) | |
105 | return None |
|
105 | return None | |
106 |
|
106 | |||
107 | entry = CACHE[self.key] |
|
107 | entry = CACHE[self.key] | |
108 | self.ui.log('simplecache', 'cache hit for %s\n', self.key) |
|
108 | self.ui.log('simplecache', 'cache hit for %s\n', self.key) | |
109 |
|
109 | |||
110 | redirectable = True |
|
110 | redirectable = True | |
111 |
|
111 | |||
112 | if not self.cacheapi: |
|
112 | if not self.cacheapi: | |
113 | redirectable = False |
|
113 | redirectable = False | |
114 | elif not self.redirecttargets: |
|
114 | elif not self.redirecttargets: | |
115 | redirectable = False |
|
115 | redirectable = False | |
116 | else: |
|
116 | else: | |
117 | clienttargets = set(self.redirecttargets) |
|
117 | clienttargets = set(self.redirecttargets) | |
118 | ourtargets = set(t[b'name'] for t in loadredirecttargets(self.ui)) |
|
118 | ourtargets = set(t[b'name'] for t in loadredirecttargets(self.ui)) | |
119 |
|
119 | |||
120 | # We only ever redirect to a single target (for now). So we don't |
|
120 | # We only ever redirect to a single target (for now). So we don't | |
121 | # need to store which target matched. |
|
121 | # need to store which target matched. | |
122 | if not clienttargets & ourtargets: |
|
122 | if not clienttargets & ourtargets: | |
123 | redirectable = False |
|
123 | redirectable = False | |
124 |
|
124 | |||
125 | if redirectable: |
|
125 | if redirectable: | |
126 | paths = self.req.dispatchparts[:-3] |
|
126 | paths = self.req.dispatchparts[:-3] | |
127 | paths.append(b'simplecache') |
|
127 | paths.append(b'simplecache') | |
128 | paths.append(self.key) |
|
128 | paths.append(self.key) | |
129 |
|
129 | |||
130 |
url = b'%s/%s' % (self.req. |
|
130 | url = b'%s/%s' % (self.req.baseurl, b'/'.join(paths)) | |
131 |
|
131 | |||
132 | #url = b'http://example.com/%s' % self.key |
|
132 | #url = b'http://example.com/%s' % self.key | |
133 | self.ui.log('simplecache', 'sending content redirect for %s to ' |
|
133 | self.ui.log('simplecache', 'sending content redirect for %s to ' | |
134 | '%s\n', self.key, url) |
|
134 | '%s\n', self.key, url) | |
135 | response = wireprototypes.alternatelocationresponse( |
|
135 | response = wireprototypes.alternatelocationresponse( | |
136 | url=url, |
|
136 | url=url, | |
137 | mediatype=b'application/mercurial-cbor') |
|
137 | mediatype=b'application/mercurial-cbor') | |
138 |
|
138 | |||
139 | return {'objs': [response]} |
|
139 | return {'objs': [response]} | |
140 |
|
140 | |||
141 | if self.cacheobjects: |
|
141 | if self.cacheobjects: | |
142 | return { |
|
142 | return { | |
143 | 'objs': entry, |
|
143 | 'objs': entry, | |
144 | } |
|
144 | } | |
145 | else: |
|
145 | else: | |
146 | return { |
|
146 | return { | |
147 | 'objs': [wireprototypes.encodedresponse(entry)], |
|
147 | 'objs': [wireprototypes.encodedresponse(entry)], | |
148 | } |
|
148 | } | |
149 |
|
149 | |||
150 | def onobject(self, obj): |
|
150 | def onobject(self, obj): | |
151 | if self.cacheobjects: |
|
151 | if self.cacheobjects: | |
152 | self.buffered.append(obj) |
|
152 | self.buffered.append(obj) | |
153 | else: |
|
153 | else: | |
154 | self.buffered.extend(self.encodefn(obj)) |
|
154 | self.buffered.extend(self.encodefn(obj)) | |
155 |
|
155 | |||
156 | yield obj |
|
156 | yield obj | |
157 |
|
157 | |||
158 | def onfinished(self): |
|
158 | def onfinished(self): | |
159 | self.ui.log('simplecache', 'storing cache entry for %s\n', self.key) |
|
159 | self.ui.log('simplecache', 'storing cache entry for %s\n', self.key) | |
160 | if self.cacheobjects: |
|
160 | if self.cacheobjects: | |
161 | CACHE[self.key] = self.buffered |
|
161 | CACHE[self.key] = self.buffered | |
162 | else: |
|
162 | else: | |
163 | CACHE[self.key] = b''.join(self.buffered) |
|
163 | CACHE[self.key] = b''.join(self.buffered) | |
164 |
|
164 | |||
165 | return [] |
|
165 | return [] | |
166 |
|
166 | |||
167 | def makeresponsecacher(orig, repo, proto, command, args, objencoderfn, |
|
167 | def makeresponsecacher(orig, repo, proto, command, args, objencoderfn, | |
168 | redirecttargets, redirecthashes): |
|
168 | redirecttargets, redirecthashes): | |
169 | return memorycacher(repo.ui, command, objencoderfn, redirecttargets, |
|
169 | return memorycacher(repo.ui, command, objencoderfn, redirecttargets, | |
170 | redirecthashes, proto._req) |
|
170 | redirecthashes, proto._req) | |
171 |
|
171 | |||
172 | def loadredirecttargets(ui): |
|
172 | def loadredirecttargets(ui): | |
173 | path = ui.config('simplecache', 'redirectsfile') |
|
173 | path = ui.config('simplecache', 'redirectsfile') | |
174 | if not path: |
|
174 | if not path: | |
175 | return [] |
|
175 | return [] | |
176 |
|
176 | |||
177 | with open(path, 'rb') as fh: |
|
177 | with open(path, 'rb') as fh: | |
178 | s = fh.read() |
|
178 | s = fh.read() | |
179 |
|
179 | |||
180 | return stringutil.evalpythonliteral(s) |
|
180 | return stringutil.evalpythonliteral(s) | |
181 |
|
181 | |||
182 | def getadvertisedredirecttargets(orig, repo, proto): |
|
182 | def getadvertisedredirecttargets(orig, repo, proto): | |
183 | return loadredirecttargets(repo.ui) |
|
183 | return loadredirecttargets(repo.ui) | |
184 |
|
184 | |||
185 | def extsetup(ui): |
|
185 | def extsetup(ui): | |
186 | global CACHE |
|
186 | global CACHE | |
187 |
|
187 | |||
188 | CACHE = util.lrucachedict(10000) |
|
188 | CACHE = util.lrucachedict(10000) | |
189 |
|
189 | |||
190 | extensions.wrapfunction(wireprotov2server, 'makeresponsecacher', |
|
190 | extensions.wrapfunction(wireprotov2server, 'makeresponsecacher', | |
191 | makeresponsecacher) |
|
191 | makeresponsecacher) | |
192 | extensions.wrapfunction(wireprotov2server, 'getadvertisedredirecttargets', |
|
192 | extensions.wrapfunction(wireprotov2server, 'getadvertisedredirecttargets', | |
193 | getadvertisedredirecttargets) |
|
193 | getadvertisedredirecttargets) |
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