Mercurial > hg
annotate hgext/remotefilelog/connectionpool.py @ 43076:2372284d9457
formatting: blacken the codebase
This is using my patch to black
(https://github.com/psf/black/pull/826) so we don't un-wrap collection
literals.
Done with:
hg files 'set:**.py - mercurial/thirdparty/** - "contrib/python-zstandard/**"' | xargs black -S
# skip-blame mass-reformatting only
# no-check-commit reformats foo_bar functions
Differential Revision: https://phab.mercurial-scm.org/D6971
author | Augie Fackler <augie@google.com> |
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date | Sun, 06 Oct 2019 09:45:02 -0400 |
parents | 3a333a582d7b |
children | 687b865b95ad |
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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 extensions, |
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12 hg, |
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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 def _cleanup(orig): |
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46 # close pipee first so peer.cleanup reading it won't deadlock, |
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47 # if there are other processes with pipeo open (i.e. us). |
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48 peer = orig.im_self |
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49 if util.safehasattr(peer, 'pipee'): |
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50 peer.pipee.close() |
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51 return orig() |
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52 |
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53 peer = hg.peer(self._repo.ui, {}, path) |
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54 if util.safehasattr(peer, 'cleanup'): |
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55 extensions.wrapfunction(peer, 'cleanup', _cleanup) |
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56 |
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57 conn = connection(pathpool, peer) |
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58 |
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59 return conn |
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60 |
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61 def close(self): |
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62 for pathpool in self._pool.itervalues(): |
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63 for conn in pathpool: |
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64 conn.close() |
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65 del pathpool[:] |
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66 |
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67 |
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68 class connection(object): |
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69 def __init__(self, pool, peer): |
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70 self._pool = pool |
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71 self.peer = peer |
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72 |
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73 def __enter__(self): |
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74 return self |
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75 |
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76 def __exit__(self, type, value, traceback): |
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77 # Only add the connection back to the pool if there was no exception, |
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78 # since an exception could mean the connection is not in a reusable |
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79 # state. |
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80 if type is None: |
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81 self._pool.append(self) |
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82 else: |
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83 self.close() |
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84 |
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85 def close(self): |
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86 if util.safehasattr(self.peer, 'cleanup'): |
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87 self.peer.cleanup() |