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#!/usr/bin/env python
import os
from bootstrap import application, db, populate_g
from flask.ext.script import Manager
from flask.ext.migrate import Migrate, MigrateCommand
from werkzeug import generate_password_hash
from sqlalchemy.engine import reflection
from sqlalchemy.schema import (
MetaData,
Table,
DropTable,
ForeignKeyConstraint,
DropConstraint)
Migrate(application, db)
manager = Manager(application)
manager.add_command('db', MigrateCommand)
@manager.command
def db_empty():
"Will drop every datas stocked in db."
# From http://www.sqlalchemy.org/trac/wiki/UsageRecipes/DropEverything
conn = db.engine.connect()
# the transaction only applies if the DB supports
# transactional DDL, i.e. Postgresql, MS SQL Server
trans = conn.begin()
inspector = reflection.Inspector.from_engine(db.engine)
# gather all data first before dropping anything.
# some DBs lock after things have been dropped in
# a transaction.
metadata = MetaData()
tbs = []
all_fks = []
for table_name in inspector.get_table_names():
fks = []
for fk in inspector.get_foreign_keys(table_name):
if not fk['name']:
continue
fks.append(ForeignKeyConstraint((), (), name=fk['name']))
t = Table(table_name, metadata, *fks)
tbs.append(t)
all_fks.extend(fks)
for fkc in all_fks:
conn.execute(DropConstraint(fkc))
for table in tbs:
conn.execute(DropTable(table))
trans.commit()
@manager.command
def db_create():
"Will create the database from conf parameters."
with application.app_context():
populate_g()
from pyaggr3g470r.models import User, Role
db.create_all()
role_admin = Role(name="admin")
role_user = Role(name="user")
user1 = User(nickname="admin",
email=os.environ.get("ADMIN_EMAIL",
"root@pyAggr3g470r.localhost"),
pwdhash=generate_password_hash(
os.environ.get("ADMIN_PASSWORD", "password")),
activation_key="")
user1.roles.extend([role_admin, role_user])
db.session.add(user1)
db.session.commit()
@manager.command
def fetch(user, password, limit=10):
"Crawl the feeds with the client crawler."
from pyaggr3g470r.lib.crawler import CrawlerScheduler
scheduler = CrawlerScheduler(user, password)
scheduler.run(limit=limit)
scheduler.wait()
@manager.command
def fetch_asyncio(user_id, feed_id):
"Crawl the feeds with asyncio."
with application.app_context():
populate_g()
from pyaggr3g470r.models import User
from pyaggr3g470r import crawler
users, feed_id = [], None
try:
users = User.query.filter(User.id == int(user_id)).all()
except:
users = User.query.all()
finally:
if users == []:
users = User.query.all()
try:
feed_id = int(feed_id)
except:
feed_id = None
for user in users:
if user.activation_key == "":
print("Fetching articles for " + user.nickname)
feed_getter = crawler.retrieve_feed(user, feed_id)
if __name__ == '__main__':
manager.run()
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