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plugins: refactor initialization

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add a new function "init" call when the app starts.
The function can:
* return False to disable the plugin.
* modify the Flask app.
This commit is contained in:
Alexandre Flament 2021-09-13 19:37:51 +02:00
parent adeb084cf4
commit 2b4fef7118
5 changed files with 248 additions and 188 deletions
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42
searx/webapp.py
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@ -85,7 +85,7 @@ from searx.utils import (
)
from searx.version import VERSION_STRING, GIT_URL, GIT_BRANCH
from searx.query import RawTextQuery
from searx.plugins import plugins
from searx.plugins import plugins, initialize as plugin_initialize
from searx.plugins.oa_doi_rewrite import get_doi_resolver
from searx.preferences import (
Preferences,
@ -158,25 +158,6 @@ app.jinja_env.lstrip_blocks = True
app.jinja_env.add_extension('jinja2.ext.loopcontrols') # pylint: disable=no-member
app.secret_key = settings['server']['secret_key']
# see https://flask.palletsprojects.com/en/1.1.x/cli/
# True if "FLASK_APP=searx/webapp.py FLASK_ENV=development flask run"
flask_run_development = (
os.environ.get("FLASK_APP") is not None
and os.environ.get("FLASK_ENV") == 'development'
and is_flask_run_cmdline()
)
# True if reload feature is activated of werkzeug, False otherwise (including uwsgi, etc..)
# __name__ != "__main__" if searx.webapp is imported (make test, make docs, uwsgi...)
# see run() at the end of this file : searx_debug activates the reload feature.
werkzeug_reloader = flask_run_development or (searx_debug and __name__ == "__main__")
# initialize the engines except on the first run of the werkzeug server.
if (not werkzeug_reloader
or (werkzeug_reloader
and os.environ.get("WERKZEUG_RUN_MAIN") == "true") ):
search_initialize(enable_checker=True)
babel = Babel(app)
# used when translating category names
@ -1351,6 +1332,27 @@ def page_not_found(_e):
return render('404.html'), 404
# see https://flask.palletsprojects.com/en/1.1.x/cli/
# True if "FLASK_APP=searx/webapp.py FLASK_ENV=development flask run"
flask_run_development = (
os.environ.get("FLASK_APP") is not None
and os.environ.get("FLASK_ENV") == 'development'
and is_flask_run_cmdline()
)
# True if reload feature is activated of werkzeug, False otherwise (including uwsgi, etc..)
# __name__ != "__main__" if searx.webapp is imported (make test, make docs, uwsgi...)
# see run() at the end of this file : searx_debug activates the reload feature.
werkzeug_reloader = flask_run_development or (searx_debug and __name__ == "__main__")
# initialize the engines except on the first run of the werkzeug server.
if (not werkzeug_reloader
or (werkzeug_reloader
and os.environ.get("WERKZEUG_RUN_MAIN") == "true") ):
plugin_initialize(app)
search_initialize(enable_checker=True)
def run():
logger.debug(
'starting webserver on %s:%s',