def list_volumes(query_attrs):
"""
List Volumes by attribute.
Positional arguments:
query_attrs (dict):
The fields to query on. Each item must be in
the form of
'Volume.${attr} ${op}': ${value}
where ${attr} is a user attribute, ${op}
is ==, !=, >, >=, <, <=, or IN, and ${value}
is the value to compare the attribute against.
Returns:
On success, a list of Volumes that match the query.
Raises an exception on error.
Authorization:
Only an administrator may call this method.
"""
# don't show deleted volumes
query_attrs["Volume.deleted =="] = False
return storage.list_volumes(query_attrs)
def list_volumes(query_attrs):
"""
List Volumes by attribute.
Positional arguments:
query_attrs (dict):
The fields to query on. Each item must be in
the form of
'Volume.${attr} ${op}': ${value}
where ${attr} is a user attribute, ${op}
is ==, !=, >, >=, <, <=, or IN, and ${value}
is the value to compare the attribute against.
Returns:
On success, a list of Volumes that match the query.
Raises an exception on error.
Authorization:
Only an administrator may call this method.
"""
# don't show deleted volumes
query_attrs["Volume.deleted =="] = False
return storage.list_volumes(query_attrs)
def myvolumes(request):
'''
View that display all of user's owned volumes
'''
session = request.session
username = session['login_email']
user = db.read_user(username)
vols_owned = []
vols_rw = []
vols_ro = []
if user.volumes_o:
vols_owned = db.list_volumes({"Volume.volume_id IN": user.volumes_o})
if user.volumes_rw:
volumes_rw_without_o = list(set(user.volumes_o) - set(user.volumes_rw))
if volumes_rw_without_o:
vols_rw = db.list_volumes(
{"Volume.volume_id IN": volumes_rw_without_o})
if user.volumes_r:
vols_ro = db.list_Volumes({"Volume.volume_id IN": user.volumes_r})
# filter out volumes that I own that I can also read/write
t = loader.get_template('myvolumes.html')
c = Context({
'username': username,
'vols_owned': vols_owned,
'vols_rw': vols_rw,
'vols_ro': vols_ro
})
return HttpResponse(t.render(c))
def allvolumes(request):
'''
Display all public volumes
'''
session = request.session
username = session['login_email']
v_attrs = {'Volume.private !=': True}
volumes = db.list_volumes(v_attrs)
owners = []
for v in volumes:
attrs = {"SyndicateUser.owner_id ==": v.owner_id}
owners.append(db.get_user(attrs))
vols = zip(volumes, owners)
t = loader.get_template('allvolumes.html')
c = Context({'username': username, 'vols': vols})
return HttpResponse(t.render(c))
def removevolumes(request, g_id):
'''
This handler allows removal of one or many volumes from an Aqcquisition
Gateway. It calls multi_update() as a helper method to allow transactional
updates to the database.
'''
# This is a helper method that isolates the @transactional decorator, speeding
# up the code when it doesn't reach update() in this view and allowing for
# errors that would break in GAE if the decorator was applied to the entire view.
# It updates multiple volumes at once
@transactional(xg=True)
def multi_update(v_ids, g_id, vfields, gfields):
for v_id, vfield in zip(v_ids, vfields):
db.update_volume(v_id, **vfield)
db.update_acquisition_gateway(g_id, **gfields)
session.pop('ag_initial_data' + str(g_id))
session = request.session
username = session['login_email']
g_id = int(g_id)
VolumeFormSet = formset_factory(gatewayforms.GatewayRemoveVolume, extra=0)
formset = VolumeFormSet(request.POST)
# This call is not checked because the formset will always be valid (readonly widgets)
formset.is_valid()
volume_ids_to_be_removed = []
new_ags_set = []
initial_and_forms = zip(session.get('ag_initial_data' + str(g_id), []),
formset.forms)
for i, f in initial_and_forms:
if f.cleaned_data['remove']:
attrs = {"Volume.name ==": i['volume_name']}
vols = db.list_volumes(attrs, limit=1)
vol = vols[0]
# update each volume's new AG list
new_ags = vol.ag_ids
new_ags.remove(int(g_id))
new_ags_set.append({'ag_ids': new_ags})
# update info for AG update
volume_ids_to_be_removed.append(vol.volume_id)
if not volume_ids_to_be_removed:
session['message'] = "You must select at least one volume to remove."
return redirect('django_ag.views.viewgateway', g_id)
old_vids = set(db.read_acquisition_gateway(g_id).volume_ids)
new_vids = list(old_vids - set(volume_ids_to_be_removed))
gfields = {'volume_ids': new_vids}
try:
multi_update(volume_ids_to_be_removed, g_id, new_ags_set, gfields)
except Exception as e:
logging.error("Unable to update acquisition gateway %s. Exception %s" %
(g_id, e))
session['message'] = "Unable to update gateway."
return redirect('django_ag.views.viewgateway', g_id)
session['new_change'] = "We've updated your AG's volumes."
session['next_url'] = '/syn/AG/viewgateway/' + str(g_id)
session['next_message'] = "Click here to go back to your gateway."
return redirect('/syn/thanks')
def addvolume(request, g_id):
'''
Handler for adding a volume to the gateay.
'''
# This is a helper method that isolates the @transactional decorator, speeding
# up the code when it doesn't reach update() in this view and allowing for
# errors that would break in GAE if the decorator was applied to the entire view.
@transactional(xg=True)
def update(v_id, g_id, vfields, gfields):
db.update_volume(v_id, **vfields)
db.update_acquisition_gateway(g_id, **gfields)
session.pop('ag_initial_data' + str(g_id))
session = request.session
username = session['login_email']
g_id = int(g_id)
form = gatewayforms.GatewayAddVolume(request.POST)
if form.is_valid():
attrs = {
"Volume.name ==":
form.cleaned_data['volume_name'].strip().replace(" ", "_")
}
vols = db.list_volumes(attrs, limit=1)
if vols:
volume = vols[0]
logging.info(volume)
else:
session[
'message'] = "The volume %s doesn't exist." % form.cleaned_data[
'volume_name']
return redirect('django_ag.views.viewgateway', g_id)
gateway = db.read_acquisition_gateway(g_id)
# Prepare upcoming volume state
if volume.ag_ids:
new_ags = volume.ag_ids
new_ags.append(gateway.g_id)
else:
new_ags = [gateway.g_id]
vfields = {'ag_ids': new_ags}
# Preare upcoming AG state
old_vids = gateway.volume_ids
new_vid = volume.volume_id
if new_vid in old_vids:
session[
'message'] = "That volume is already attached to this gateway!"
return redirect('django_ag.views.viewgateway', g_id)
if old_vids:
old_vids.append(new_vid)
new_vids = old_vids
else:
new_vids = [new_vid]
# Update and redirect
try:
gfields = {'volume_ids': new_vids}
update(volume.volume_id, g_id, vfields, gfields)
except Exception as e:
logging.error(
"Unable to update acquisition gateway %s or volume %s. Exception %s"
% (gateway.ms_username, form.cleaned_data['volume_name'], e))
session['message'] = "Unable to update gateway."
return redirect('django_ag.views.viewgateway', g_id)
session['new_change'] = "We've updated your AG's volumes."
session['next_url'] = '/syn/AG/viewgateway/' + str(g_id)
session['next_message'] = "Click here to go back to your gateway."
return redirect('/syn/thanks')
else:
session['message'] = "Invalid entries for adding volumes."
return redirect('django_ag.views.viewgateway', g_id)
def removevolumes(request, g_id):
'''
This handler allows removal of one or many volumes from an Aqcquisition
Gateway. It calls multi_update() as a helper method to allow transactional
updates to the database.
'''
# This is a helper method that isolates the @transactional decorator, speeding
# up the code when it doesn't reach update() in this view and allowing for
# errors that would break in GAE if the decorator was applied to the entire view.
# It updates multiple volumes at once
@transactional(xg=True)
def multi_update(v_ids, g_id, vfields, gfields):
for v_id, vfield in zip(v_ids, vfields):
db.update_volume(v_id, **vfield)
db.update_replica_gateway(g_id, **gfields)
session.pop('rg_initial_data' + str(g_id))
session = request.session
username = session['login_email']
g_id = int(g_id)
VolumeFormSet = formset_factory(gatewayforms.GatewayRemoveVolume, extra=0)
formset = VolumeFormSet(request.POST)
# This call is not checked because the formset will always be valid (readonly widgets)
formset.is_valid()
volume_ids_to_be_removed = []
new_rgs_set = []
initial_and_forms = zip(session.get('rg_initial_data' + str(g_id), []), formset.forms)
for i, f in initial_and_forms:
if f.cleaned_data['remove']:
attrs = {"Volume.name ==":i['volume_name']}
vols = db.list_volumes(attrs, limit=1)
vol = vols[0]
# update each volumes new RG list
new_rgs = vol.rg_ids
new_rgs.remove(g_id)
new_rgs_set.append({'rg_ids':new_rgs})
# update info for AG update
volume_ids_to_be_removed.append(vol.volume_id)
if not volume_ids_to_be_removed:
session['message'] = "You must select at least one volume to remove."
return redirect('django_rg.views.viewgateway', g_id)
old_vids = set(db.read_replica_gateway(g_id).volume_ids)
new_vids = list(old_vids - set(volume_ids_to_be_removed))
gfields = {'volume_ids':new_vids}
try:
multi_update(volume_ids_to_be_removed, g_id, new_rgs_set, gfields)
except Exception as e:
logging.error("Unable to update replica gateway %d. Exception %s" % (g_id, e))
session['message'] = "Unable to update gateway."
return redirect('django_rg.views.viewgateway', g_id)
session['new_change'] = "We've updated your RG's volumes."
session['next_url'] = '/syn/RG/viewgateway/' + str(g_id)
session['next_message'] = "Click here to go back to your gateway."
return redirect('/syn/thanks')
def addvolume(request, g_id):
'''
Handler for adding a volume to the gateay.
'''
# This is a helper method that isolates the @transactional decorator, speeding
# up the code when it doesn't reach update() in this view and allowing for
# errors that would break in GAE if the decorator was applied to the entire view.
@transactional(xg=True)
def update(v_id, g_id, vfields, gfields):
db.update_volume(v_id, **vfields)
db.update_replica_gateway(g_id, **gfields)
session.pop('rg_initial_data' + str(g_id))
session = request.session
username = session['login_email']
g_id = int(g_id)
form = gatewayforms.GatewayAddVolume(request.POST)
if form.is_valid():
attrs = {"Volume.name ==":form.cleaned_data['volume_name'].strip().replace(" ", "_")}
vols = db.list_volumes(attrs, limit=1)
if vols:
volume = vols[0]
logging.info(volume)
else:
session['message'] = "The volume %s doesn't exist." % form.cleaned_data['volume_name']
return redirect('django_ag.views.viewgateway', g_id)
gateway = db.read_replica_gateway(g_id)
# prepare volume state
if volume.rg_ids:
new_rgs = volume.rg_ids
new_rgs.append(gateway.g_id)
else:
new_rgs = [gateway.g_id]
vfields = {'rg_ids':new_rgs}
# prepate RG state
old_vids = gateway.volume_ids
new_vid = volume.volume_id
if new_vid in old_vids:
session['message'] = "That volume is already attached to this gateway!"
return redirect('django_rg.views.viewgateway', g_id)
if old_vids:
old_vids.append(new_vid)
new_vids = old_vids
else:
new_vids = [new_vid]
# Update and redirect
try:
gfields={'volume_ids':new_vids}
update(volume.volume_id, g_id, vfields, gfields)
except Exception as e:
logging.error("Unable to update replica gateway %s or volume %s. Exception %s" % (rg.ms_username, volume.name, e))
session['message'] = "Unable to update."
return redirect('django_rg.views.viewgateway', g_id)
session['new_change'] = "We've updated your RG's volumes."
session['next_url'] = '/syn/RG/viewgateway/' + str(g_id)
session['next_message'] = "Click here to go back to your gateway."
return redirect('/syn/thanks')
else:
session['message'] = "Invalid entries for adding volumes."
return redirect('django_rg.views.viewgateway', g_id)
def create(request):
'''
View for creating UG's
'''
session = request.session
username = session['login_email']
user = db.read_user(username)
# Helper method that simplifies returning forms after user error.
def give_create_form(username, session):
message = session.pop('message', "")
form = gatewayforms.CreateUG()
t = loader.get_template('gateway_templates/create_user_gateway.html')
c = RequestContext(request, {
'username': username,
'form': form,
'message': message
})
return HttpResponse(t.render(c))
if request.POST:
# Validate input forms
form = gatewayforms.CreateUG(request.POST)
if form.is_valid():
if not form.cleaned_data['volume_name']:
logging.info("DLFKJSDF")
vol = None
else:
attrs = {
"Volume.name ==":
form.cleaned_data['volume_name'].strip().replace(" ", "_")
}
vols = db.list_volumes(attrs, limit=1)
if vols:
vol = vols[0]
else:
session[
'message'] = "No volume %s exists." % form.cleaned_data[
'volume_name']
return give_create_form(username, session)
if (vol.volume_id
not in user.volumes_r) and (vol.volume_id
not in user.volumes_rw):
session[
'message'] = "Must have read rights to volume %s to create UG for it." % form.cleaned_data[
'volume_name']
return give_create_form(username, session)
# Force update of UG version
attrs = {"UG_version": 1}
try:
transaction(
lambda: db.update_volume(vol.volume_id, **attrs))
except Exception as E:
session['message'] = "UG creation error: %s" % E
return give_create_form(username, session)
try:
# Prep kwargs
kwargs = {}
kwargs['read_write'] = form.cleaned_data['read_write']
kwargs['ms_username'] = form.cleaned_data['g_name']
kwargs['port'] = form.cleaned_data['port']
kwargs['host'] = form.cleaned_data['host']
kwargs['ms_password'] = form.cleaned_data['g_password']
# Create
new_ug = db.create_user_gateway(user, vol, **kwargs)
except Exception as E:
session['message'] = "UG creation error: %s" % E
return give_create_form(username, session)
session['new_change'] = "Your new gateway is ready."
session['next_url'] = '/syn/UG/mygateways'
session['next_message'] = "Click here to see your gateways."
return HttpResponseRedirect('/syn/thanks/')
else:
# Prep returned form values (so they don't have to re-enter stuff)
if 'g_name' in form.errors:
oldname = ""
else:
oldname = request.POST['g_name']
if 'volume_name' in form.errors:
oldvolume_name = ""
else:
oldvolume_name = request.POST['volume_name']
if 'host' in form.errors:
oldhost = ""
else:
oldhost = request.POST['host']
if 'port' in form.errors:
oldport = ""
else:
oldport = request.POST['port']
# Prep error message
message = "Invalid form entry: "
for k, v in form.errors.items():
message = message + "\"" + k + "\"" + " -> "
for m in v:
message = message + m + " "
# Give then the form again
form = gatewayforms.CreateUG(
initial={
'g_name': oldname,
'volume_name': oldvolume_name,
'host': oldhost,
'port': oldport,
})
t = loader.get_template(
'gateway_templates/create_user_gateway.html')
c = RequestContext(request, {
'username': username,
'form': form,
'message': message
})
return HttpResponse(t.render(c))
else:
# Not a POST, give them blank form
return give_create_form(username, session)
def changevolume(request, g_id):
'''
View to enable changing volume attached to UG
'''
session = request.session
username = session['login_email']
user = db.read_user(username)
g_id = int(g_id)
g = db.read_user_gateway(g_id)
# Isolate DB calls to allow roll-backs via transactions
@transactional(xg=True)
def update_ug_and_vol(g_id, gfields, vol1_id, vol2_id):
db.update_user_gateway(g_id, **gfields)
attrs = {"UG_version": 1}
# Force update of UG version
db.update_volume(vol1_id, **attrs)
db.update_volume(vol2_id, **attrs)
form = gatewayforms.ChangeVolume(request.POST)
if form.is_valid():
attrs = {
"Volume.name ==":
form.cleaned_data['volume_name'].strip().replace(" ", "_")
}
vols = db.list_volumes(attrs, limit=1)
if vols:
new_vol = vols[0]
else:
session['message'] = "No volume %s exists." % form.cleaned_data[
'volume_name']
return redirect('django_ug.views.viewgateway', g_id)
if (new_vol.volume_id
not in user.volumes_r) and (new_vol.volume_id
not in user.volumes_rw):
session[
'message'] = "Must have read rights to volume %s to assign UG to it." % form.cleaned_data[
'volume_name']
return redirect('django_ug.views.viewgateway', g_id)
old_vol = g.volume_id
#fields = {"volume_id":new_vol.volume_id, "cert_version": True}
try:
db.update_user_gateway(g_id,
volume_id=new_vol.volume_id,
cert_version=True)
db.update_volume(new_vol.volume_id,
version=True,
cert_version=True)
if g.is_bound_to_volume():
# update the old Volume
db.update_volume(old_vol, version=True, cert_version=True)
#update_ug_and_vol(g_id, fields, old_vol, new_vol.volume_id)
except Exception, e:
logging.error("Unable to update UG with ID %s. Error was %s." %
(g_id, e))
session['message'] = "Error. Unable to change user gateway."
return redirect('django_ug.views.viewgateway', g_id)
session['new_change'] = "We've updated your UG."
session['next_url'] = '/syn/UG/viewgateway/' + str(g_id)
session['next_message'] = "Click here to go back to your gateway."
return HttpResponseRedirect('/syn/thanks')
