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# Copyright 2011 Canonical Ltd.
#
# This file is part of u1db.
#
# u1db is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3
# as published by the Free Software Foundation.
#
# u1db is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with u1db. If not, see <http://www.gnu.org/licenses/>.
"""Build server for u1db-serve."""
import os
from paste import httpserver
from u1db.remote import (
http_app,
server_state,
cors_middleware
)
class DbListingServerState(server_state.ServerState):
"""ServerState capable of listing dbs."""
def global_info(self):
"""Return list of dbs."""
dbs = []
for fname in os.listdir(self._workingdir):
p = os.path.join(self._workingdir, fname)
if os.path.isfile(p) and os.access(p, os.R_OK|os.W_OK):
try:
with open(p, 'rb') as f:
header = f.read(16)
if header == "SQLite format 3\000":
dbs.append(fname)
except IOError:
pass
return {"databases": dict.fromkeys(dbs), "db_count": len(dbs)}
def make_server(host, port, working_dir, accept_cors_connections=None):
"""Make a server on host and port exposing dbs living in working_dir."""
state = DbListingServerState()
state.set_workingdir(working_dir)
application = http_app.HTTPApp(state)
if accept_cors_connections:
application = cors_middleware.CORSMiddleware(application,
accept_cors_connections)
server = httpserver.WSGIServer(application, (host, port),
httpserver.WSGIHandler)
return server
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