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annotate piecrust/serving/wrappers.py @ 411:e7b865f8f335

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bake: Enable multiprocess baking. Baking is now done by running a worker per CPU, and sending jobs to them. This changes several things across the codebase: * Ability to not cache things related to pages other than the 'main' page (i.e. the page at the bottom of the execution stack). * Decouple the baking process from the bake records, so only the main process keeps track (and modifies) the bake record. * Remove the need for 'batch page getters' and loading a page directly from the page factories. There are various smaller changes too included here, including support for scope performance timers that are saved with the bake record and can be printed out to the console. Yes I got carried away. For testing, the in-memory 'mock' file-system doesn't work anymore, since we're spawning processes, so this is replaced by a 'tmpfs' file-system which is saved in temporary files on disk and deleted after tests have run.
author Ludovic Chabant <ludovic@chabant.com>
date Fri, 12 Jun 2015 17:09:19 -0700
parents fa3ee8a8ee2d
children 9612cfc6455a
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1 import os
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2 from piecrust.serving.server import Server
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3 from piecrust.serving.procloop import _sse_abort
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6 def run_werkzeug_server(root_dir, host, port,
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7 debug_piecrust=False, sub_cache_dir=None,
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8 use_debugger=False, use_reloader=False):
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9 from werkzeug.serving import run_simple
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10
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11 def _run_sse_check():
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12 # We don't want to run the processing loop here if this isn't
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13 # the actual process that does the serving. In most cases it is,
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14 # but if we're using Werkzeug's reloader, then it won't be the
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15 # first time we get there... it will only be the correct process
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16 # the second time, when the reloading process is spawned, with the
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17 # `WERKZEUG_RUN_MAIN` variable set.
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18 return (not use_reloader or
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19 os.environ.get('WERKZEUG_RUN_MAIN') == 'true')
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21 app = _get_piecrust_server(root_dir,
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22 debug=debug_piecrust,
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23 sub_cache_dir=sub_cache_dir,
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24 run_sse_check=_run_sse_check)
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25 try:
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26 run_simple(host, port, app,
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27 threaded=True,
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28 use_debugger=use_debugger,
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29 use_reloader=use_reloader)
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30 finally:
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31 _sse_abort.set()
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34 def run_gunicorn_server(root_dir,
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35 debug_piecrust=False, sub_cache_dir=None,
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36 gunicorn_options=None):
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37 from gunicorn.app.base import BaseApplication
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38
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39 class PieCrustGunicornApplication(BaseApplication):
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40 def __init__(self, app, options):
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41 self.app = app
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42 self.options = options
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43 super(PieCrustGunicornApplication, self).__init__()
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45 def load_config(self):
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46 for k, v in self.options.items():
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47 if k in self.cfg.settings and v is not None:
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48 self.cfg.set(k, v)
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50 def load(self):
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51 return self.app
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53 app = _get_piecrust_server(root_dir,
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54 debug=debug_piecrust,
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55 sub_cache_dir=sub_cache_dir)
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57 gunicorn_options = gunicorn_options or {}
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58 app_wrapper = PieCrustGunicornApplication(app, gunicorn_options)
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59 app_wrapper.run()
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62 def _get_piecrust_server(root_dir, **kwargs):
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63 server = Server(root_dir, **kwargs)
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64 app = server.getWsgiApp()
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65 return app
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66