Mercurial > hg
annotate tests/test-filelog.py @ 37291:b0041036214e
wireproto: define frame to represent progress updates
Today, a long-running operation on a server may run without any sign
of progress on the client. This can lead to the conclusion that the
server has hung or the connection has dropped. In fact, connections
can and do time out due to inactivity. And a long-running server
operation can result in the connection dropping prematurely because
no data is being sent!
While we're inventing the new wire protocol, let's provide a mechanism
for communicating progress on potentially expensive server-side events.
We introduce a new frame type that conveys "progress" updates. This
frame type essentially holds the data required to formulate a
``ui.progress()`` call.
We only define the frame right now. Implementing it will be a bit of
work since there is no analog to progress frames in the existing
wire protocol. We'll need to teach the ui object to write to the
wire protocol, etc.
The use of a CBOR map may seem wasteful, as this will encode key
names in every frame. This *is* wasteful. However, maps are
extensible. And the intent is to always use compression via
streams. Compression will make the overhead negligible since repeated
strings will be mostly eliminated over the wire.
Differential Revision: https://phab.mercurial-scm.org/D2902
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Mon, 26 Mar 2018 10:50:36 -0700 |
parents | d83ca854fa21 |
children | f71c97d9b97b |
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1 #!/usr/bin/env python |
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2 """ |
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4 """ |
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5 from __future__ import absolute_import, print_function |
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6 |
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7 from mercurial.node import ( |
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8 hex, |
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9 nullid, |
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10 ) |
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11 from mercurial import ( |
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12 hg, |
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13 ui as uimod, |
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14 ) |
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15 |
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16 myui = uimod.ui.load() |
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17 repo = hg.repository(myui, path='.', create=True) |
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18 |
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19 fl = repo.file('foobar') |
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20 |
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21 def addrev(text, renamed=False): |
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22 if renamed: |
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24 meta = {'copyrev': hex(nullid), 'copy': 'bar'} |
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25 else: |
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26 meta = {} |
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27 |
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28 lock = t = None |
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29 try: |
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30 lock = repo.lock() |
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31 t = repo.transaction('commit') |
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32 node = fl.add(text, meta, t, 0, nullid, nullid) |
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33 return node |
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34 finally: |
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35 if t: |
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36 t.close() |
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37 if lock: |
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38 lock.release() |
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39 |
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40 def error(text): |
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41 print('ERROR: ' + text) |
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42 |
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43 textwith = '\1\nfoo' |
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44 without = 'foo' |
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45 |
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46 node = addrev(textwith) |
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47 if not textwith == fl.read(node): |
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48 error('filelog.read for data starting with \\1\\n') |
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49 if fl.cmp(node, textwith) or not fl.cmp(node, without): |
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50 error('filelog.cmp for data starting with \\1\\n') |
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51 if fl.size(0) != len(textwith): |
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52 error('FIXME: This is a known failure of filelog.size for data starting ' |
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53 'with \\1\\n') |
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54 |
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55 node = addrev(textwith, renamed=True) |
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56 if not textwith == fl.read(node): |
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57 error('filelog.read for a renaming + data starting with \\1\\n') |
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58 if fl.cmp(node, textwith) or not fl.cmp(node, without): |
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59 error('filelog.cmp for a renaming + data starting with \\1\\n') |
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60 if fl.size(1) != len(textwith): |
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61 error('filelog.size for a renaming + data starting with \\1\\n') |
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62 |
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63 print('OK.') |