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annotate contrib/automation/hgautomation/__init__.py @ 51571:9b51a4fb0f96

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bundlespec: type the _bundlespeccontentopts dictionary If only we had a tool to detect the kind of stupid error we just fixed? ho wait.
author Pierre-Yves David <pierre-yves.david@octobus.net>
date Tue, 09 Apr 2024 14:37:24 +0200
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1 # __init__.py - High-level automation interfaces
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2 #
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3 # Copyright 2019 Gregory Szorc <gregory.szorc@gmail.com>
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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 # no-check-code because Python 3 native.
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9
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10 import pathlib
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11 import secrets
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12
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13 from .aws import AWSConnection
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15
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16 class HGAutomation:
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17 """High-level interface for Mercurial automation.
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18
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19 Holds global state, provides access to other primitives, etc.
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20 """
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21
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22 def __init__(self, state_path: pathlib.Path):
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23 self.state_path = state_path
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24
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25 state_path.mkdir(exist_ok=True)
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26
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27 def default_password(self):
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28 """Obtain the default password to use for remote machines.
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29
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30 A new password will be generated if one is not stored.
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31 """
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32 p = self.state_path / 'default-password'
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33
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34 try:
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35 with p.open('r', encoding='ascii') as fh:
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36 data = fh.read().strip()
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37
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38 if data:
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39 return data
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40
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41 except FileNotFoundError:
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42 pass
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43
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44 password = secrets.token_urlsafe(24)
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45
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46 with p.open('w', encoding='ascii') as fh:
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47 fh.write(password)
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48 fh.write('\n')
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49
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50 p.chmod(0o0600)
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51
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52 return password
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53
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54 def aws_connection(self, region: str, ensure_ec2_state: bool = True):
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55 """Obtain an AWSConnection instance bound to a specific region."""
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56
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57 return AWSConnection(self, region, ensure_ec2_state=ensure_ec2_state)