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chgserver: invalidate the server if extensions fail to load...
chgserver: invalidate the server if extensions fail to load Previously, if extensions fail to load, chg server will just keep working without those extensions. It will print a warning message but only if a new server starts. This patch invalidates the server if any extension failed to load, but still serve the client (hopefully just) once. It will help chg pass some test cases of test-bad-extension.t.
Mads Kiilerich - - Load All Authors

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test-clonebundles.t
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Set up a server
$ cat >> $HGRCPATH << EOF
> [format]
> usegeneraldelta=yes
> EOF
$ hg init server
$ cd server
$ cat >> .hg/hgrc << EOF
> [extensions]
> clonebundles =
> EOF
$ touch foo
$ hg -q commit -A -m 'add foo'
$ touch bar
$ hg -q commit -A -m 'add bar'
$ hg serve -d -p $HGPORT --pid-file hg.pid --accesslog access.log
$ cat hg.pid >> $DAEMON_PIDS
$ cd ..
Missing manifest should not result in server lookup
$ hg --verbose clone -U http://localhost:$HGPORT no-manifest
requesting all changes
adding changesets
adding manifests
adding file changes
added 2 changesets with 2 changes to 2 files
$ cat server/access.log
* - - [*] "GET /?cmd=capabilities HTTP/1.1" 200 - (glob)
* - - [*] "GET /?cmd=batch HTTP/1.1" 200 - x-hgarg-1:cmds=heads+%3Bknown+nodes%3D (glob)
* - - [*] "GET /?cmd=getbundle HTTP/1.1" 200 - x-hgarg-1:bundlecaps=HG20%2Cbundle2%3DHG20%250Achangegroup%253D01%252C02%250Adigests%253Dmd5%252Csha1%252Csha512%250Aerror%253Dabort%252Cunsupportedcontent%252Cpushraced%252Cpushkey%250Ahgtagsfnodes%250Alistkeys%250Apushkey%250Aremote-changegroup%253Dhttp%252Chttps&cg=1&common=0000000000000000000000000000000000000000&heads=aaff8d2ffbbf07a46dd1f05d8ae7877e3f56e2a2&listkeys=phase%2Cbookmarks (glob)
* - - [*] "GET /?cmd=listkeys HTTP/1.1" 200 - x-hgarg-1:namespace=phases (glob)
Empty manifest file results in retrieval
(the extension only checks if the manifest file exists)
$ touch server/.hg/clonebundles.manifest
$ hg --verbose clone -U http://localhost:$HGPORT empty-manifest
no clone bundles available on remote; falling back to regular clone
requesting all changes
adding changesets
adding manifests
adding file changes
added 2 changesets with 2 changes to 2 files
Manifest file with invalid URL aborts
$ echo 'http://does.not.exist/bundle.hg' > server/.hg/clonebundles.manifest
$ hg clone http://localhost:$HGPORT 404-url
applying clone bundle from http://does.not.exist/bundle.hg
error fetching bundle: (.* not known|getaddrinfo failed|No address associated with hostname) (re)
abort: error applying bundle
(if this error persists, consider contacting the server operator or disable clone bundles via "--config ui.clonebundles=false")
[255]
Server is not running aborts
$ echo "http://localhost:$HGPORT1/bundle.hg" > server/.hg/clonebundles.manifest
$ hg clone http://localhost:$HGPORT server-not-runner
applying clone bundle from http://localhost:$HGPORT1/bundle.hg
error fetching bundle: * refused* (glob)
abort: error applying bundle
(if this error persists, consider contacting the server operator or disable clone bundles via "--config ui.clonebundles=false")
[255]
Server returns 404
$ python $TESTDIR/dumbhttp.py -p $HGPORT1 --pid http.pid
$ cat http.pid >> $DAEMON_PIDS
$ hg clone http://localhost:$HGPORT running-404
applying clone bundle from http://localhost:$HGPORT1/bundle.hg
HTTP error fetching bundle: HTTP Error 404: File not found
abort: error applying bundle
(if this error persists, consider contacting the server operator or disable clone bundles via "--config ui.clonebundles=false")
[255]
We can override failure to fall back to regular clone
$ hg --config ui.clonebundlefallback=true clone -U http://localhost:$HGPORT 404-fallback
applying clone bundle from http://localhost:$HGPORT1/bundle.hg
HTTP error fetching bundle: HTTP Error 404: File not found
falling back to normal clone
requesting all changes
adding changesets
adding manifests
adding file changes
added 2 changesets with 2 changes to 2 files
Bundle with partial content works
$ hg -R server bundle --type gzip-v1 --base null -r 53245c60e682 partial.hg
1 changesets found
We verify exact bundle content as an extra check against accidental future
changes. If this output changes, we could break old clients.
$ f --size --hexdump partial.hg
partial.hg: size=207
0000: 48 47 31 30 47 5a 78 9c 63 60 60 98 17 ac 12 93 |HG10GZx.c``.....|
0010: f0 ac a9 23 45 70 cb bf 0d 5f 59 4e 4a 7f 79 21 |...#Ep..._YNJ.y!|
0020: 9b cc 40 24 20 a0 d7 ce 2c d1 38 25 cd 24 25 d5 |..@$ ...,.8%.$%.|
0030: d8 c2 22 cd 38 d9 24 cd 22 d5 c8 22 cd 24 cd 32 |..".8.$."..".$.2|
0040: d1 c2 d0 c4 c8 d2 32 d1 38 39 29 c9 34 cd d4 80 |......2.89).4...|
0050: ab 24 b5 b8 84 cb 40 c1 80 2b 2d 3f 9f 8b 2b 31 |.$....@..+-?..+1|
0060: 25 45 01 c8 80 9a d2 9b 65 fb e5 9e 45 bf 8d 7f |%E......e...E...|
0070: 9f c6 97 9f 2b 44 34 67 d9 ec 8e 0f a0 92 0b 75 |....+D4g.......u|
0080: 41 d6 24 59 18 a4 a4 9a a6 18 1a 5b 98 9b 5a 98 |A.$Y.......[..Z.|
0090: 9a 18 26 9b a6 19 98 1a 99 99 26 a6 18 9a 98 24 |..&.......&....$|
00a0: 26 59 a6 25 5a 98 a5 18 a6 24 71 41 35 b1 43 dc |&Y.%Z....$qA5.C.|
00b0: 16 b2 83 f7 e9 45 8b d2 56 c7 a3 1f 82 52 d7 8a |.....E..V....R..|
00c0: 78 ed fc d5 76 f1 36 35 dc 05 00 36 ed 5e c7 |x...v.65...6.^.|
$ echo "http://localhost:$HGPORT1/partial.hg" > server/.hg/clonebundles.manifest
$ hg clone -U http://localhost:$HGPORT partial-bundle
applying clone bundle from http://localhost:$HGPORT1/partial.hg
adding changesets
adding manifests
adding file changes
added 1 changesets with 1 changes to 1 files
finished applying clone bundle
searching for changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 1 changes to 1 files
Incremental pull doesn't fetch bundle
$ hg clone -r 53245c60e682 -U http://localhost:$HGPORT partial-clone
adding changesets
adding manifests
adding file changes
added 1 changesets with 1 changes to 1 files
$ cd partial-clone
$ hg pull
pulling from http://localhost:$HGPORT/
searching for changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 1 changes to 1 files
(run 'hg update' to get a working copy)
$ cd ..
Bundle with full content works
$ hg -R server bundle --type gzip-v2 --base null -r tip full.hg
2 changesets found
Again, we perform an extra check against bundle content changes. If this content
changes, clone bundles produced by new Mercurial versions may not be readable
by old clients.
$ f --size --hexdump full.hg
full.hg: size=406
0000: 48 47 32 30 00 00 00 0e 43 6f 6d 70 72 65 73 73 |HG20....Compress|
0010: 69 6f 6e 3d 47 5a 78 9c 63 60 60 90 e5 76 f6 70 |ion=GZx.c``..v.p|
0020: f4 73 77 75 0f f2 0f 0d 60 00 02 46 06 76 a6 b2 |.swu....`..F.v..|
0030: d4 a2 e2 cc fc 3c 03 23 06 06 e6 65 40 b1 4d c1 |.....<.#...e@.M.|
0040: 2a 31 09 cf 9a 3a 52 04 b7 fc db f0 95 e5 a4 f4 |*1...:R.........|
0050: 97 17 b2 c9 0c 14 00 02 e6 d9 99 25 1a a7 a4 99 |...........%....|
0060: a4 a4 1a 5b 58 a4 19 27 9b a4 59 a4 1a 59 a4 99 |...[X..'..Y..Y..|
0070: a4 59 26 5a 18 9a 18 59 5a 26 1a 27 27 25 99 a6 |.Y&Z...YZ&.''%..|
0080: 99 1a 70 95 a4 16 97 70 19 28 18 70 a5 e5 e7 73 |..p....p.(.p...s|
0090: 71 25 a6 a4 28 00 19 40 13 0e ac fa df ab ff 7b |q%..(..@.......{|
00a0: 3f fb 92 dc 8b 1f 62 bb 9e b7 d7 d9 87 3d 5a 44 |?.....b......=ZD|
00b0: ac 2f b0 a9 c3 66 1e 54 b9 26 08 a7 1a 1b 1a a7 |./...f.T.&......|
00c0: 25 1b 9a 1b 99 19 9a 5a 18 9b a6 18 19 00 dd 67 |%......Z.......g|
00d0: 61 61 98 06 f4 80 49 4a 8a 65 52 92 41 9a 81 81 |aa....IJ.eR.A...|
00e0: a5 11 17 50 31 30 58 19 cc 80 98 25 29 b1 08 c4 |...P10X....%)...|
00f0: 37 07 79 19 88 d9 41 ee 07 8a 41 cd 5d 98 65 fb |7.y...A...A.].e.|
0100: e5 9e 45 bf 8d 7f 9f c6 97 9f 2b 44 34 67 d9 ec |..E.......+D4g..|
0110: 8e 0f a0 61 a8 eb 82 82 2e c9 c2 20 25 d5 34 c5 |...a....... %.4.|
0120: d0 d8 c2 dc d4 c2 d4 c4 30 d9 34 cd c0 d4 c8 cc |........0.4.....|
0130: 34 31 c5 d0 c4 24 31 c9 32 2d d1 c2 2c c5 30 25 |41...$1.2-..,.0%|
0140: 09 e4 ee 85 8f 85 ff 88 ab 89 36 c7 2a c4 47 34 |..........6.*.G4|
0150: fe f8 ec 7b 73 37 3f c3 24 62 1d 8d 4d 1d 9e 40 |...{s7?.$b..M..@|
0160: 06 3b 10 14 36 a4 38 10 04 d8 21 01 9a b1 83 f7 |.;..6.8...!.....|
0170: e9 45 8b d2 56 c7 a3 1f 82 52 d7 8a 78 ed fc d5 |.E..V....R..x...|
0180: 76 f1 36 25 81 89 c7 ad ec 90 34 48 75 2b 89 49 |v.6%......4Hu+.I|
0190: bf 00 d6 97 f0 8d |......|
$ echo "http://localhost:$HGPORT1/full.hg" > server/.hg/clonebundles.manifest
$ hg clone -U http://localhost:$HGPORT full-bundle
applying clone bundle from http://localhost:$HGPORT1/full.hg
adding changesets
adding manifests
adding file changes
added 2 changesets with 2 changes to 2 files
finished applying clone bundle
searching for changes
no changes found
Feature works over SSH
$ hg clone -U -e "python \"$TESTDIR/dummyssh\"" ssh://user@dummy/server ssh-full-clone
applying clone bundle from http://localhost:$HGPORT1/full.hg
adding changesets
adding manifests
adding file changes
added 2 changesets with 2 changes to 2 files
finished applying clone bundle
searching for changes
no changes found
Entry with unknown BUNDLESPEC is filtered and not used
$ cat > server/.hg/clonebundles.manifest << EOF
> http://bad.entry1 BUNDLESPEC=UNKNOWN
> http://bad.entry2 BUNDLESPEC=xz-v1
> http://bad.entry3 BUNDLESPEC=none-v100
> http://localhost:$HGPORT1/full.hg BUNDLESPEC=gzip-v2
> EOF
$ hg clone -U http://localhost:$HGPORT filter-unknown-type
applying clone bundle from http://localhost:$HGPORT1/full.hg
adding changesets
adding manifests
adding file changes
added 2 changesets with 2 changes to 2 files
finished applying clone bundle
searching for changes
no changes found
Automatic fallback when all entries are filtered
$ cat > server/.hg/clonebundles.manifest << EOF
> http://bad.entry BUNDLESPEC=UNKNOWN
> EOF
$ hg clone -U http://localhost:$HGPORT filter-all
no compatible clone bundles available on server; falling back to regular clone
(you may want to report this to the server operator)
requesting all changes
adding changesets
adding manifests
adding file changes
added 2 changesets with 2 changes to 2 files
URLs requiring SNI are filtered in Python <2.7.9
$ cp full.hg sni.hg
$ cat > server/.hg/clonebundles.manifest << EOF
> http://localhost:$HGPORT1/sni.hg REQUIRESNI=true
> http://localhost:$HGPORT1/full.hg
> EOF
#if sslcontext
Python 2.7.9+ support SNI
$ hg clone -U http://localhost:$HGPORT sni-supported
applying clone bundle from http://localhost:$HGPORT1/sni.hg
adding changesets
adding manifests
adding file changes
added 2 changesets with 2 changes to 2 files
finished applying clone bundle
searching for changes
no changes found
#else
Python <2.7.9 will filter SNI URLs
$ hg clone -U http://localhost:$HGPORT sni-unsupported
applying clone bundle from http://localhost:$HGPORT1/full.hg
adding changesets
adding manifests
adding file changes
added 2 changesets with 2 changes to 2 files
finished applying clone bundle
searching for changes
no changes found
#endif
Stream clone bundles are supported
$ hg -R server debugcreatestreamclonebundle packed.hg
writing 613 bytes for 4 files
bundle requirements: generaldelta, revlogv1
No bundle spec should work
$ cat > server/.hg/clonebundles.manifest << EOF
> http://localhost:$HGPORT1/packed.hg
> EOF
$ hg clone -U http://localhost:$HGPORT stream-clone-no-spec
applying clone bundle from http://localhost:$HGPORT1/packed.hg
4 files to transfer, 613 bytes of data
transferred 613 bytes in *.* seconds (*) (glob)
finished applying clone bundle
searching for changes
no changes found
Bundle spec without parameters should work
$ cat > server/.hg/clonebundles.manifest << EOF
> http://localhost:$HGPORT1/packed.hg BUNDLESPEC=none-packed1
> EOF
$ hg clone -U http://localhost:$HGPORT stream-clone-vanilla-spec
applying clone bundle from http://localhost:$HGPORT1/packed.hg
4 files to transfer, 613 bytes of data
transferred 613 bytes in *.* seconds (*) (glob)
finished applying clone bundle
searching for changes
no changes found
Bundle spec with format requirements should work
$ cat > server/.hg/clonebundles.manifest << EOF
> http://localhost:$HGPORT1/packed.hg BUNDLESPEC=none-packed1;requirements%3Drevlogv1
> EOF
$ hg clone -U http://localhost:$HGPORT stream-clone-supported-requirements
applying clone bundle from http://localhost:$HGPORT1/packed.hg
4 files to transfer, 613 bytes of data
transferred 613 bytes in *.* seconds (*) (glob)
finished applying clone bundle
searching for changes
no changes found
Stream bundle spec with unknown requirements should be filtered out
$ cat > server/.hg/clonebundles.manifest << EOF
> http://localhost:$HGPORT1/packed.hg BUNDLESPEC=none-packed1;requirements%3Drevlogv42
> EOF
$ hg clone -U http://localhost:$HGPORT stream-clone-unsupported-requirements
no compatible clone bundles available on server; falling back to regular clone
(you may want to report this to the server operator)
requesting all changes
adding changesets
adding manifests
adding file changes
added 2 changesets with 2 changes to 2 files
Set up manifest for testing preferences
(Remember, the TYPE does not have to match reality - the URL is
important)
$ cp full.hg gz-a.hg
$ cp full.hg gz-b.hg
$ cp full.hg bz2-a.hg
$ cp full.hg bz2-b.hg
$ cat > server/.hg/clonebundles.manifest << EOF
> http://localhost:$HGPORT1/gz-a.hg BUNDLESPEC=gzip-v2 extra=a
> http://localhost:$HGPORT1/bz2-a.hg BUNDLESPEC=bzip2-v2 extra=a
> http://localhost:$HGPORT1/gz-b.hg BUNDLESPEC=gzip-v2 extra=b
> http://localhost:$HGPORT1/bz2-b.hg BUNDLESPEC=bzip2-v2 extra=b
> EOF
Preferring an undefined attribute will take first entry
$ hg --config ui.clonebundleprefers=foo=bar clone -U http://localhost:$HGPORT prefer-foo
applying clone bundle from http://localhost:$HGPORT1/gz-a.hg
adding changesets
adding manifests
adding file changes
added 2 changesets with 2 changes to 2 files
finished applying clone bundle
searching for changes
no changes found
Preferring bz2 type will download first entry of that type
$ hg --config ui.clonebundleprefers=COMPRESSION=bzip2 clone -U http://localhost:$HGPORT prefer-bz
applying clone bundle from http://localhost:$HGPORT1/bz2-a.hg
adding changesets
adding manifests
adding file changes
added 2 changesets with 2 changes to 2 files
finished applying clone bundle
searching for changes
no changes found
Preferring multiple values of an option works
$ hg --config ui.clonebundleprefers=COMPRESSION=unknown,COMPRESSION=bzip2 clone -U http://localhost:$HGPORT prefer-multiple-bz
applying clone bundle from http://localhost:$HGPORT1/bz2-a.hg
adding changesets
adding manifests
adding file changes
added 2 changesets with 2 changes to 2 files
finished applying clone bundle
searching for changes
no changes found
Sorting multiple values should get us back to original first entry
$ hg --config ui.clonebundleprefers=BUNDLESPEC=unknown,BUNDLESPEC=gzip-v2,BUNDLESPEC=bzip2-v2 clone -U http://localhost:$HGPORT prefer-multiple-gz
applying clone bundle from http://localhost:$HGPORT1/gz-a.hg
adding changesets
adding manifests
adding file changes
added 2 changesets with 2 changes to 2 files
finished applying clone bundle
searching for changes
no changes found
Preferring multiple attributes has correct order
$ hg --config ui.clonebundleprefers=extra=b,BUNDLESPEC=bzip2-v2 clone -U http://localhost:$HGPORT prefer-separate-attributes
applying clone bundle from http://localhost:$HGPORT1/bz2-b.hg
adding changesets
adding manifests
adding file changes
added 2 changesets with 2 changes to 2 files
finished applying clone bundle
searching for changes
no changes found
Test where attribute is missing from some entries
$ cat > server/.hg/clonebundles.manifest << EOF
> http://localhost:$HGPORT1/gz-a.hg BUNDLESPEC=gzip-v2
> http://localhost:$HGPORT1/bz2-a.hg BUNDLESPEC=bzip2-v2
> http://localhost:$HGPORT1/gz-b.hg BUNDLESPEC=gzip-v2 extra=b
> http://localhost:$HGPORT1/bz2-b.hg BUNDLESPEC=bzip2-v2 extra=b
> EOF
$ hg --config ui.clonebundleprefers=extra=b clone -U http://localhost:$HGPORT prefer-partially-defined-attribute
applying clone bundle from http://localhost:$HGPORT1/gz-b.hg
adding changesets
adding manifests
adding file changes
added 2 changesets with 2 changes to 2 files
finished applying clone bundle
searching for changes
no changes found