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mirror of https://github.com/gsi-upm/senpy synced 2025-04-10 23:19:14 +00:00
senpy/senpy/extensions.py
2014-10-17 12:47:17 +02:00

108 lines
3.2 KiB
Python

import os
import sys
import importlib
from flask import current_app
try:
from flask import _app_ctx_stack as stack
except ImportError:
from flask import _request_ctx_stack as stack
from blueprints import nif_blueprint
from git import Repo, InvalidGitRepositoryError
class Senpy(object):
def __init__(self, app=None, plugin_folder="plugins"):
self.app = app
base_folder = os.path.join(os.path.dirname(__file__), "plugins")
self.search_folders = (folder for folder in (base_folder, plugin_folder)
if folder and os.path.isdir(folder))
if app is not None:
self.init_app(app)
"""
Note: I'm not particularly fond of adding self.app and app.senpy, but
I can't think of a better way to do it.
"""
def init_app(self, app, plugin_folder="plugins"):
app.senpy = self
#app.config.setdefault('SQLITE3_DATABASE', ':memory:')
# Use the newstyle teardown_appcontext if it's available,
# otherwise fall back to the request context
if hasattr(app, 'teardown_appcontext'):
app.teardown_appcontext(self.teardown)
else:
app.teardown_request(self.teardown)
app.register_blueprint(nif_blueprint)
def analyse(self, **params):
if "algorithm" in params:
algo = params["algorithm"]
if algo in self.plugins and self.plugins[algo].enabled:
return self.plugins[algo].plugin.analyse(**params)
return {"status": 500, "message": "No valid algorithm"}
def _load_plugin(self, plugin, search_folder, enabled=True):
sys.path.append(search_folder)
tmp = importlib.import_module(plugin)
sys.path.remove(search_folder)
tmp.path = search_folder
try:
repo_path = os.path.join(search_folder, plugin)
tmp.repo = Repo(repo_path)
except InvalidGitRepositoryError:
tmp.repo = None
if not hasattr(tmp, "enabled"):
tmp.enabled = enabled
return tmp
def _load_plugins(self):
#print(sys.path)
#print(search_folder)
plugins = {}
for search_folder in self.search_folders:
for item in os.listdir(search_folder):
if os.path.isdir(os.path.join(search_folder, item)) \
and os.path.exists(
os.path.join(search_folder, item, "__init__.py")):
plugins[item] = self._load_plugin(item, search_folder)
return plugins
def teardown(self, exception):
pass
def enable_all(self):
for plugin in self.plugins:
self.enable_plugin(plugin)
def enable_plugin(self, item):
self.plugins[item].enabled = True
def disable_plugin(self, item):
self.plugins[item].enabled = False
@property
def plugins(self):
ctx = stack.top
if ctx is not None:
if not hasattr(self, '_plugins'):
self._plugins = self._load_plugins()
print("Already plugins")
return self._plugins
if __name__ == '__main__':
from flask import Flask
app = Flask(__name__)
sp = Senpy()
sp.init_app(app)
with app.app_context():
sp._load_plugins()