Mercurial > hg
annotate hgext/remotefilelog/connectionpool.py @ 51700:7f0cb9ee0534
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I accidentally published 25e7f9dcad0f::bd1483fd7088, this is the inverse.
author | Raphaël Gomès <rgomes@octobus.net> |
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date | Tue, 23 Jul 2024 10:02:46 +0200 |
parents | 493034cc3265 |
children | ca7bde5dbafb |
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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 |
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9 from mercurial import ( |
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10 hg, |
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11 sshpeer, |
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12 ) |
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13 |
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14 _sshv1peer = sshpeer.sshv1peer |
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15 |
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16 |
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17 class connectionpool: |
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18 def __init__(self, repo): |
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19 self._repo = repo |
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20 self._pool = dict() |
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21 |
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22 def get(self, path): |
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23 pathpool = self._pool.get(path) |
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24 if pathpool is None: |
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25 pathpool = list() |
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26 self._pool[path] = pathpool |
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27 |
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28 conn = None |
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29 if len(pathpool) > 0: |
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30 try: |
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31 conn = pathpool.pop() |
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32 peer = conn.peer |
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33 # If the connection has died, drop it |
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34 if isinstance(peer, _sshv1peer): |
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35 if peer._subprocess.poll() is not None: |
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36 conn = None |
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37 except IndexError: |
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38 pass |
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39 |
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40 if conn is None: |
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41 |
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42 peer = hg.peer(self._repo.ui, {}, path) |
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43 if hasattr(peer, '_cleanup'): |
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44 |
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45 class mypeer(peer.__class__): |
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46 def _cleanup(self, warn=None): |
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47 # close pipee first so peer.cleanup reading it won't |
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48 # deadlock, if there are other processes with pipeo |
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49 # open (i.e. us). |
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50 if hasattr(self, 'pipee'): |
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51 self.pipee.close() |
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52 return super(mypeer, self)._cleanup() |
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53 |
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54 peer.__class__ = mypeer |
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55 |
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56 conn = connection(pathpool, peer) |
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57 |
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58 return conn |
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59 |
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60 def close(self): |
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61 for pathpool in self._pool.values(): |
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62 for conn in pathpool: |
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63 conn.close() |
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64 del pathpool[:] |
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65 |
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66 |
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67 class connection: |
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68 def __init__(self, pool, peer): |
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69 self._pool = pool |
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70 self.peer = peer |
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71 |
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72 def __enter__(self): |
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73 return self |
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74 |
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75 def __exit__(self, type, value, traceback): |
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76 # Only add the connection back to the pool if there was no exception, |
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77 # since an exception could mean the connection is not in a reusable |
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78 # state. |
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79 if type is None: |
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80 self._pool.append(self) |
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81 else: |
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82 self.close() |
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83 |
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84 def close(self): |
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85 if hasattr(self.peer, 'cleanup'): |
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86 self.peer.cleanup() |