view tests/test-debugcommands.t @ 35565:bdae51a83dfb

clonebundle: make it possible to retrieve the initial bundle through largefile

By setting the default path early enough, we make it possible to retrieve a
clone bundle as a largefile from the repository we are cloning.

But... why?

Clone bundle is a great feature to speeds up clone of large repository. However
one of the main obstacle for clone bundle deployment is the authentication
scheme. For non public project, just putting a static file on some random CDN is
not an option as we have to make sure people have the proper permission to
retrieves the bundle. On the other hand, 'largefiles' already have all the
necessary logic to serve arbitrary binary files -after- an authentication
checks. So reusing an existing large file infrastructure can be a significant
shortcut to clone bundle in this kind of closed environment.

The idea might seems strange, but the necessary update to the large file
extensions are quite small while the benefits are huge. In addition, since all
the extra logic live in the 'largefiles' extensions, core does not have to know
anything about it.

  $ cat << EOF >> $HGRCPATH
  > [ui]
  > interactive=yes
  > [format]
  > usegeneraldelta=yes
  > EOF

  $ hg init debugrevlog
  $ cd debugrevlog
  $ echo a > a
  $ hg ci -Am adda
  adding a
  $ hg debugrevlog -m
  format : 1
  flags  : inline, generaldelta
  
  revisions     :  1
      merges    :  0 ( 0.00%)
      normal    :  1 (100.00%)
  revisions     :  1
      full      :  1 (100.00%)
      deltas    :  0 ( 0.00%)
  revision size : 44
      full      : 44 (100.00%)
      deltas    :  0 ( 0.00%)
  
  chunks        :  1
      0x75 (u)  :  1 (100.00%)
  chunks size   : 44
      0x75 (u)  : 44 (100.00%)
  
  avg chain length  :  0
  max chain length  :  0
  max chain reach   : 44
  compression ratio :  0
  
  uncompressed data size (min/max/avg) : 43 / 43 / 43
  full revision size (min/max/avg)     : 44 / 44 / 44
  delta size (min/max/avg)             : 0 / 0 / 0

Test debugindex, with and without the --debug flag
  $ hg debugindex a
     rev    offset  length  ..... linkrev nodeid       p1           p2 (re)
       0         0       3   ....       0 b789fdd96dc2 000000000000 000000000000 (re)
  $ hg --debug debugindex a
     rev    offset  length  ..... linkrev nodeid                                   p1                                       p2 (re)
       0         0       3   ....       0 b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3 0000000000000000000000000000000000000000 0000000000000000000000000000000000000000 (re)
  $ hg debugindex -f 1 a
     rev flag   offset   length     size  .....   link     p1     p2       nodeid (re)
       0 0000        0        3        2   ....      0     -1     -1 b789fdd96dc2 (re)
  $ hg --debug debugindex -f 1 a
     rev flag   offset   length     size  .....   link     p1     p2                                   nodeid (re)
       0 0000        0        3        2   ....      0     -1     -1 b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3 (re)

debugdelta chain basic output

  $ hg debugdeltachain -m
      rev  chain# chainlen     prev   delta       size    rawsize  chainsize     ratio   lindist extradist extraratio
        0       1        1       -1    base         44         43         44   1.02326        44         0    0.00000

  $ hg debugdeltachain -m -T '{rev} {chainid} {chainlen}\n'
  0 1 1

  $ hg debugdeltachain -m -Tjson
  [
   {
    "chainid": 1,
    "chainlen": 1,
    "chainratio": 1.02325581395,
    "chainsize": 44,
    "compsize": 44,
    "deltatype": "base",
    "extradist": 0,
    "extraratio": 0.0,
    "lindist": 44,
    "prevrev": -1,
    "rev": 0,
    "uncompsize": 43
   }
  ]

debugdelta chain with sparse read enabled

  $ cat >> $HGRCPATH <<EOF
  > [experimental]
  > sparse-read = True
  > EOF
  $ hg debugdeltachain -m
      rev  chain# chainlen     prev   delta       size    rawsize  chainsize     ratio   lindist extradist extraratio   readsize largestblk rddensity
        0       1        1       -1    base         44         43         44   1.02326        44         0    0.00000         44         44   1.00000

  $ hg debugdeltachain -m -T '{rev} {chainid} {chainlen} {readsize} {largestblock} {readdensity}\n'
  0 1 1 44 44 1.0

  $ hg debugdeltachain -m -Tjson
  [
   {
    "chainid": 1,
    "chainlen": 1,
    "chainratio": 1.02325581395,
    "chainsize": 44,
    "compsize": 44,
    "deltatype": "base",
    "extradist": 0,
    "extraratio": 0.0,
    "largestblock": 44,
    "lindist": 44,
    "prevrev": -1,
    "readdensity": 1.0,
    "readsize": 44,
    "rev": 0,
    "uncompsize": 43
   }
  ]

Test max chain len
  $ cat >> $HGRCPATH << EOF
  > [format]
  > maxchainlen=4
  > EOF

  $ printf "This test checks if maxchainlen config value is respected also it can serve as basic test for debugrevlog -d <file>.\n" >> a
  $ hg ci -m a
  $ printf "b\n" >> a
  $ hg ci -m a
  $ printf "c\n" >> a
  $ hg ci -m a
  $ printf "d\n" >> a
  $ hg ci -m a
  $ printf "e\n" >> a
  $ hg ci -m a
  $ printf "f\n" >> a
  $ hg ci -m a
  $ printf 'g\n' >> a
  $ hg ci -m a
  $ printf 'h\n' >> a
  $ hg ci -m a
  $ hg debugrevlog -d a
  # rev p1rev p2rev start   end deltastart base   p1   p2 rawsize totalsize compression heads chainlen
      0    -1    -1     0   ???          0    0    0    0     ???      ????           ?     1        0 (glob)
      1     0    -1   ???   ???          0    0    0    0     ???      ????           ?     1        1 (glob)
      2     1    -1   ???   ???        ???  ???  ???    0     ???      ????           ?     1        2 (glob)
      3     2    -1   ???   ???        ???  ???  ???    0     ???      ????           ?     1        3 (glob)
      4     3    -1   ???   ???        ???  ???  ???    0     ???      ????           ?     1        4 (glob)
      5     4    -1   ???   ???        ???  ???  ???    0     ???      ????           ?     1        0 (glob)
      6     5    -1   ???   ???        ???  ???  ???    0     ???      ????           ?     1        1 (glob)
      7     6    -1   ???   ???        ???  ???  ???    0     ???      ????           ?     1        2 (glob)
      8     7    -1   ???   ???        ???  ???  ???    0     ???      ????           ?     1        3 (glob)

Test debuglocks command:

  $ hg debuglocks
  lock:  free
  wlock: free

* Test setting the lock

waitlock <file> will wait for file to be created. If it isn't in a reasonable
amount of time, displays error message and returns 1
  $ waitlock() {
  >     start=`date +%s`
  >     timeout=5
  >     while [ \( ! -f $1 \) -a \( ! -L $1 \) ]; do
  >         now=`date +%s`
  >         if [ "`expr $now - $start`" -gt $timeout ]; then
  >             echo "timeout: $1 was not created in $timeout seconds"
  >             return 1
  >         fi
  >         sleep 0.1
  >     done
  > }
  $ dolock() {
  >     {
  >         waitlock .hg/unlock
  >         rm -f .hg/unlock
  >         echo y
  >     } | hg debuglocks "$@" > /dev/null
  > }
  $ dolock -s &
  $ waitlock .hg/store/lock

  $ hg debuglocks
  lock:  user *, process * (*s) (glob)
  wlock: free
  [1]
  $ touch .hg/unlock
  $ wait
  $ [ -f .hg/store/lock ] || echo "There is no lock"
  There is no lock

* Test setting the wlock

  $ dolock -S &
  $ waitlock .hg/wlock

  $ hg debuglocks
  lock:  free
  wlock: user *, process * (*s) (glob)
  [1]
  $ touch .hg/unlock
  $ wait
  $ [ -f .hg/wlock ] || echo "There is no wlock"
  There is no wlock

* Test setting both locks

  $ dolock -Ss &
  $ waitlock .hg/wlock && waitlock .hg/store/lock

  $ hg debuglocks
  lock:  user *, process * (*s) (glob)
  wlock: user *, process * (*s) (glob)
  [2]

* Test failing to set a lock

  $ hg debuglocks -s
  abort: lock is already held
  [255]

  $ hg debuglocks -S
  abort: wlock is already held
  [255]

  $ touch .hg/unlock
  $ wait

  $ hg debuglocks
  lock:  free
  wlock: free

* Test forcing the lock

  $ dolock -s &
  $ waitlock .hg/store/lock

  $ hg debuglocks
  lock:  user *, process * (*s) (glob)
  wlock: free
  [1]

  $ hg debuglocks -L

  $ hg debuglocks
  lock:  free
  wlock: free

  $ touch .hg/unlock
  $ wait

* Test forcing the wlock

  $ dolock -S &
  $ waitlock .hg/wlock

  $ hg debuglocks
  lock:  free
  wlock: user *, process * (*s) (glob)
  [1]

  $ hg debuglocks -W

  $ hg debuglocks
  lock:  free
  wlock: free

  $ touch .hg/unlock
  $ wait

Test WdirUnsupported exception

  $ hg debugdata -c ffffffffffffffffffffffffffffffffffffffff
  abort: working directory revision cannot be specified
  [255]

Test cache warming command

  $ rm -rf .hg/cache/
  $ hg debugupdatecaches --debug
  updating the branch cache
  $ ls -r .hg/cache/*
  .hg/cache/rbc-revs-v1
  .hg/cache/rbc-names-v1
  .hg/cache/branch2-served

  $ cd ..

Test internal debugstacktrace command

  $ cat > debugstacktrace.py << EOF
  > from __future__ import absolute_import
  > import sys
  > from mercurial import util
  > def f():
  >     util.debugstacktrace(f=sys.stdout)
  >     g()
  > def g():
  >     util.dst('hello from g\\n', skip=1)
  >     h()
  > def h():
  >     util.dst('hi ...\\nfrom h hidden in g', 1, depth=2)
  > f()
  > EOF
  $ $PYTHON debugstacktrace.py
  stacktrace at:
   debugstacktrace.py:12 in * (glob)
   debugstacktrace.py:5  in f
  hello from g at:
   debugstacktrace.py:12 in * (glob)
   debugstacktrace.py:6  in f
  hi ...
  from h hidden in g at:
   debugstacktrace.py:6 in f
   debugstacktrace.py:9 in g

Test debugcapabilities command:

  $ hg debugcapabilities ./debugrevlog/
  Main capabilities:
    branchmap
    $USUAL_BUNDLE2_CAPS$
    getbundle
    known
    lookup
    pushkey
    unbundle
  Bundle2 capabilities:
    HG20
    bookmarks
    changegroup
      01
      02
    digests
      md5
      sha1
      sha512
    error
      abort
      unsupportedcontent
      pushraced
      pushkey
    hgtagsfnodes
    listkeys
    phases
      heads
    pushkey
    remote-changegroup
      http
      https