def test_replicated_middleware_force_state_by_header(client):
response = client.get('/', **{settings.REPLICATED_FORCE_STATE_HEADER: 'master'})
assert response.status_code == 302
assert routers.state() == 'master'
response = client.post('/', **{settings.REPLICATED_FORCE_STATE_HEADER: 'slave'})
assert response.status_code == 302
assert routers.state() == 'slave'
def test_replicated_middleware_force_state_by_header(client):
response = client.get('/',
**{settings.REPLICATED_FORCE_STATE_HEADER: 'master'})
assert response.status_code == 302
assert routers.state() == 'master'
response = client.post('/',
**{settings.REPLICATED_FORCE_STATE_HEADER: 'slave'})
assert response.status_code == 302
assert routers.state() == 'slave'
def test_replicated_middleware_master_state(client):
client.post('/')
assert routers.state() == 'master'
assert client.cookies[
settings.REPLICATED_FORCE_MASTER_COOKIE_NAME].value == 'true'
def test_replicated_middleware_master_state(client):
response = client.post('/')
assert response['Router-Used'] == 'master'
assert routers.state() == 'master'
assert client.cookies[settings.REPLICATED_FORCE_MASTER_COOKIE_NAME].value == 'true'
def test_replicated_middleware_view_overrides(client, settings, url, view_id):
routers.init('slave')
settings.REPLICATED_VIEWS_OVERRIDES = {view_id: 'master'}
response = client.get(url)
assert response.status_code == 302
assert routers.state() == 'master'
def test_replicated_middleware_view_overrides(client, settings, url, view_id):
routers.init('slave')
settings.REPLICATED_VIEWS_OVERRIDES = {view_id: 'master'}
response = client.get(url)
assert response.status_code == 302
assert routers.state() == 'master'
def test_user_state_decorator():
factory = RequestFactory()
request = factory.get('/')
def _view(request):
return HttpResponse()
use_state('master')(_view)(request)
assert routers.state() == 'master'
def handle_redirect_after_write(self, request, response):
'''
Sets a flag using cookies to redirect requests happening after
successful write operations to ensure that corresponding read
request will use master database. This avoids situation when
replicas lagging behind on updates a little.
(AirOne)
The original deletes the cookie on the second GET request.
Changed to retain cookies as replication may be delayed.
Also, I changed to set a cookie after connecting to MasterDB
even if it is not a redirect. After the number of seconds specified
by MAX_AGE has elapsed, it will be deleted on the browser side.
'''
if routers.state() == 'master':
log.debug('set force master cookie for %s', request.path)
self.set_force_master_cookie(response)
def test_replicated_middleware_slave_state(client, method):
response = client.generic(method, '/')
assert response['Router-Used'] == 'slave'
# Router state is reset to 'master' after request is processed
assert routers.state() == 'master'
def get_response():
response = HttpResponseRedirect('/')
response['Router-Used'] = routers.state()
response['DB-Used'] = routers.db_for_read()
return response
def test_replicated_middleware_slave_state(client, method):
client.generic(method, '/')
assert routers.state() == 'slave'
def test_replicated_middleware_slave_state(client, method):
client.generic(method, '/')
assert routers.state() == 'slave'
def use_master_simple_context_manager():
with use_master_simple:
return routers.state()
def use_master_simple_decorator():
return routers.state()
def use_slave_simple_decorator():
return routers.state()
def get_response():
response = HttpResponseRedirect('/')
response['Router-Used'] = routers.state()
response['DB-Used'] = routers.db_for_read()
return response
def test_replicated_middleware_slave_state(client, method):
response = client.generic(method, '/')
assert response['Router-Used'] == 'slave'
# Router state is reset to 'master' after request is processed
assert routers.state() == 'master'