Mercurial > hg
annotate hgext/remotefilelog/connectionpool.py @ 46996:8d2b62d716b0 stable 5.8rc1
packaging: extract pre-computed version when running from plain tarball
The tarballs created by setup.py are not including the usual archive
markers that `hg archive` leaves, so the rewrite of the version number
computation actually left the empty version string around. This meant
that installations from PyPI would use 0.0.0 as version string.
Differential Revision: https://phab.mercurial-scm.org/D10502
author | Joerg Sonnenberger <joerg@bec.de> |
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date | Tue, 20 Apr 2021 20:35:46 +0200 |
parents | c7f6c3027af2 |
children | 6000f5b25c9b |
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1 # connectionpool.py - class for pooling peer connections for reuse |
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2 # |
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3 # Copyright 2017 Facebook, Inc. |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
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6 # GNU General Public License version 2 or any later version. |
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7 |
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8 from __future__ import absolute_import |
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9 |
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10 from mercurial import ( |
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11 hg, |
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12 pycompat, |
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13 sshpeer, |
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14 util, |
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15 ) |
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16 |
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17 _sshv1peer = sshpeer.sshv1peer |
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18 |
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19 |
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20 class connectionpool(object): |
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21 def __init__(self, repo): |
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22 self._repo = repo |
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23 self._pool = dict() |
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24 |
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25 def get(self, path): |
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26 pathpool = self._pool.get(path) |
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27 if pathpool is None: |
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28 pathpool = list() |
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29 self._pool[path] = pathpool |
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30 |
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31 conn = None |
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32 if len(pathpool) > 0: |
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33 try: |
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34 conn = pathpool.pop() |
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35 peer = conn.peer |
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36 # If the connection has died, drop it |
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37 if isinstance(peer, _sshv1peer): |
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38 if peer._subprocess.poll() is not None: |
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39 conn = None |
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40 except IndexError: |
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41 pass |
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42 |
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43 if conn is None: |
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44 |
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45 peer = hg.peer(self._repo.ui, {}, path) |
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46 if util.safehasattr(peer, '_cleanup'): |
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47 |
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48 class mypeer(peer.__class__): |
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49 def _cleanup(self, warn=None): |
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50 # close pipee first so peer.cleanup reading it won't |
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51 # deadlock, if there are other processes with pipeo |
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52 # open (i.e. us). |
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53 if util.safehasattr(self, 'pipee'): |
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54 self.pipee.close() |
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55 return super(mypeer, self)._cleanup() |
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56 |
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57 peer.__class__ = mypeer |
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58 |
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59 conn = connection(pathpool, peer) |
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60 |
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61 return conn |
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62 |
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63 def close(self): |
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64 for pathpool in pycompat.itervalues(self._pool): |
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65 for conn in pathpool: |
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66 conn.close() |
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67 del pathpool[:] |
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68 |
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69 |
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70 class connection(object): |
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71 def __init__(self, pool, peer): |
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72 self._pool = pool |
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73 self.peer = peer |
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74 |
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75 def __enter__(self): |
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76 return self |
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77 |
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78 def __exit__(self, type, value, traceback): |
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79 # Only add the connection back to the pool if there was no exception, |
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80 # since an exception could mean the connection is not in a reusable |
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81 # state. |
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82 if type is None: |
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83 self._pool.append(self) |
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84 else: |
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85 self.close() |
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86 |
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87 def close(self): |
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88 if util.safehasattr(self.peer, 'cleanup'): |
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89 self.peer.cleanup() |