view tests/test-paths.t @ 29787:80df04266a16

hgweb: profile HTTP requests

Currently, running `hg serve --profile` doesn't yield anything useful:
when the process is terminated the profiling output displays results
from the main thread, which typically spends most of its time in
select.select(). Furthermore, it has no meaningful results from
mercurial.* modules because the threads serving HTTP requests don't
actually get profiled.

This patch teaches the hgweb wsgi applications to profile individual
requests. If profiling is enabled, the profiler kicks in after
HTTP/WSGI environment processing but before Mercurial's main request
processing.

The profile results are printed to the configured profiling output.
If running `hg serve` from a shell, they will be printed to stderr,
just before the HTTP request line is logged. If profiling to a file,
we only write a single profile to the file because the file is not
opened in append mode. We could add support for appending to files
in a future patch if someone wants it.

Per request profiling doesn't work with the statprof profiler because
internally that profiler collects samples from the thread that
*initially* requested profiling be enabled. I have plans to address
this by vendoring Facebook's customized statprof and then improving
it.

  $ hg init a
  $ hg clone a b
  updating to branch default
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd a

with no paths:

  $ hg paths
  $ hg paths unknown
  not found!
  [1]
  $ hg paths -Tjson
  [
  ]

with paths:

  $ echo '[paths]' >> .hg/hgrc
  $ echo 'dupe = ../b#tip' >> .hg/hgrc
  $ echo 'expand = $SOMETHING/bar' >> .hg/hgrc
  $ hg in dupe
  comparing with $TESTTMP/b (glob)
  no changes found
  [1]
  $ cd ..
  $ hg -R a in dupe
  comparing with $TESTTMP/b (glob)
  no changes found
  [1]
  $ cd a
  $ hg paths
  dupe = $TESTTMP/b#tip (glob)
  expand = $TESTTMP/a/$SOMETHING/bar (glob)
  $ SOMETHING=foo hg paths
  dupe = $TESTTMP/b#tip (glob)
  expand = $TESTTMP/a/foo/bar (glob)
#if msys
  $ SOMETHING=//foo hg paths
  dupe = $TESTTMP/b#tip (glob)
  expand = /foo/bar
#else
  $ SOMETHING=/foo hg paths
  dupe = $TESTTMP/b#tip (glob)
  expand = /foo/bar
#endif
  $ hg paths -q
  dupe
  expand
  $ hg paths dupe
  $TESTTMP/b#tip (glob)
  $ hg paths -q dupe
  $ hg paths unknown
  not found!
  [1]
  $ hg paths -q unknown
  [1]

formatter output with paths:

  $ echo 'dupe:pushurl = https://example.com/dupe' >> .hg/hgrc
  $ hg paths -Tjson | sed 's|\\\\|\\|g'
  [
   {
    "name": "dupe",
    "pushurl": "https://example.com/dupe",
    "url": "$TESTTMP/b#tip" (glob)
   },
   {
    "name": "expand",
    "url": "$TESTTMP/a/$SOMETHING/bar" (glob)
   }
  ]
  $ hg paths -Tjson dupe | sed 's|\\\\|\\|g'
  [
   {
    "name": "dupe",
    "pushurl": "https://example.com/dupe",
    "url": "$TESTTMP/b#tip" (glob)
   }
  ]
  $ hg paths -Tjson -q unknown
  [
  ]
  [1]

password should be masked in plain output, but not in machine-readable output:

  $ echo 'insecure = http://foo:[e-mail]/' >> .hg/hgrc
  $ hg paths insecure
  http://foo:***@example.com/
  $ hg paths -Tjson insecure
  [
   {
    "name": "insecure",
    "url": "http://foo:[e-mail]/"
   }
  ]

zeroconf wraps ui.configitems(), which shouldn't crash at least:

  $ hg paths --config extensions.zeroconf=
  dupe = $TESTTMP/b#tip (glob)
  dupe:pushurl = https://example.com/dupe
  expand = $TESTTMP/a/$SOMETHING/bar (glob)
  insecure = http://foo:***@example.com/

  $ cd ..

sub-options for an undeclared path are ignored

  $ hg init suboptions
  $ cd suboptions

  $ cat > .hg/hgrc << EOF
  > [paths]
  > path0 = https://example.com/path0
  > path1:pushurl = https://example.com/path1
  > EOF
  $ hg paths
  path0 = https://example.com/path0

unknown sub-options aren't displayed

  $ cat > .hg/hgrc << EOF
  > [paths]
  > path0 = https://example.com/path0
  > path0:foo = https://example.com/path1
  > EOF

  $ hg paths
  path0 = https://example.com/path0

:pushurl must be a URL

  $ cat > .hg/hgrc << EOF
  > [paths]
  > default = /path/to/nothing
  > default:pushurl = /not/a/url
  > EOF

  $ hg paths
  (paths.default:pushurl not a URL; ignoring)
  default = /path/to/nothing

#fragment is not allowed in :pushurl

  $ cat > .hg/hgrc << EOF
  > [paths]
  > default = https://example.com/repo
  > invalid = https://example.com/repo
  > invalid:pushurl = https://example.com/repo#branch
  > EOF

  $ hg paths
  ("#fragment" in paths.invalid:pushurl not supported; ignoring)
  default = https://example.com/repo
  invalid = https://example.com/repo
  invalid:pushurl = https://example.com/repo

  $ cd ..

'file:' disables [paths] entries for clone destination

  $ cat >> $HGRCPATH <<EOF
  > [paths]
  > gpath1 = http://hg.example.com
  > EOF

  $ hg clone a gpath1
  abort: cannot create new http repository
  [255]

  $ hg clone a file:gpath1
  updating to branch default
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd gpath1
  $ hg -q id
  000000000000

  $ cd ..