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from __future__ import print_function, division, absolute_import
import uuid
import simplejson as json
import redis # used for collections
import logging
from flask import (render_template, flash)
from utility import hmac
from utility.logger import getLogger
logger = getLogger(__name__)
def get_redis_conn():
Redis = redis.StrictRedis(port=6380)
return Redis
Redis = get_redis_conn()
def is_redis_available():
try:
Redis.ping()
except:
return False
return True
def get_user_id(column_name, column_value):
user_list = Redis.hgetall("users")
for key in user_list:
user_ob = json.loads(user_list[key])
if column_name in user_ob and user_ob[column_name] == column_value:
return key
return None
def get_user_by_unique_column(column_name, column_value):
item_details = None
user_list = Redis.hgetall("users")
if column_name != "user_id":
for key in user_list:
user_ob = json.loads(user_list[key])
if column_name in user_ob and user_ob[column_name] == column_value:
item_details = user_ob
else:
item_details = json.loads(user_list[column_value])
return item_details
def set_user_attribute(user_id, column_name, column_value):
user_info = json.loads(Redis.hget("users", user_id))
user_info[column_name] = column_value
Redis.hset("users", user_id, json.dumps(user_info))
def get_user_collections(user_id):
collections = None
collections = Redis.hget("collections", user_id)
if collections:
return json.loads(collections)
else:
return []
def save_user(user, user_id):
Redis.hset("users", user_id, json.dumps(user))
def save_collections(user_id, collections_ob):
Redis.hset("collections", user_id, collections_ob)
def save_verification_code(user_email, code):
Redis.hset("verification_codes", code, user_email)
def check_verification_code(code):
email_address = None
user_details = None
email_address = Redis.hget("verification_codes", code)
if email_address:
user_details = get_user_by_unique_column('email_address', email_address)
if user_details:
return user_details
else:
return None
else:
return None
def get_user_groups(user_id):
#ZS: Get the groups where a user is an admin or a member and return lists corresponding to those two sets of groups
admin_group_ids = [] #ZS: Group IDs where user is an admin
user_group_ids = [] #ZS: Group IDs where user is a regular user
groups_list = Redis.hgetall("groups")
for key in groups_list:
group_ob = json.loads(groups_list[key])
group_admins = set(group_ob['admins'])
group_users = set(group_ob['users'])
if user_id in group_admins:
admin_group_ids.append(group_ob['id'])
elif user_id in group_users:
user_group_ids.append(group_ob['id'])
else:
continue
return admin_group_ids, user_group_ids
def get_group_info(group_id):
group_json = Redis.hget("groups", group_id)
group_info = None
if group_json:
group_info = json.loads(group_json)
return group_info
def create_group(admin_member_ids, user_member_ids = [], group_name = ""):
group_id = str(uuid.uuid4())
new_group = {
"id" : group_id,
"admins": admin_member_ids,
"users" : user_member_ids,
"name" : group_name,
"created_timestamp": datetime.datetime.utcnow().strftime('%b %d %Y %I:%M%p'),
"changed_timestamp": datetime.datetime.utcnow().strftime('%b %d %Y %I:%M%p')
}
Redis.hset("groups", group_id, new_group)
return new_group
def delete_group(user_id, group_id):
#ZS: If user is an admin of a group, remove it from the groups hash
group_info = get_group_info(group_id)
if user_id in group_info["admins"]:
Redis.hdel("groups", group_id)
return get_user_groups(user_id)
else:
None
def add_users_to_group(user_id, group_id, user_emails = [], admins = False): #ZS "admins" is just to indicate whether the users should be added to the groups admins or regular users set
group_info = get_group_info(group_id)
if user_id in group_info["admins"]: #ZS: Just to make sure that the user is an admin for the group, even though they shouldn't be able to reach this point unless they are
if admins:
group_users = set(group_info["admins"])
else:
group_users = set(group_info["users"])
for email in user_emails:
user_id = get_user_id("email_address", email)
group_users.add(user_id)
if admins:
group_info["admins"] = list(group_users)
else:
group_info["users"] = list(group_users)
group_info["changed_timestamp"] = datetime.datetime.utcnow().strftime('%b %d %Y %I:%M%p')
Redis.hset("groups", group_id, json.dumps(group_info))
return group_info
else:
return None
def remove_users_from_group(user_id, users_to_remove_ids, group_id, user_type = "users"): #ZS: User type is because I assume admins can remove other admins
group_info = get_group_info(group_id)
if user_id in group_info["admins"]:
group_users = set(group_info[user_type])
group_users -= set(users_to_remove_ids)
group_info[user_type] = list(group_users)
group_info["changed_timestamp"] = datetime.datetime.utcnow().strftime('%b %d %Y %I:%M%p')
Redis.hset("groups", group_id, json.dumps(group_info))
def change_group_name(user_id, group_id, new_name):
group_info = get_group_info(group_id)
if user_id in group_info["admins"]:
group_info["name"] = new_name
return group_info
else:
return None
def get_resources():
resource_list = Redis.hgetall("resources")
return resource_list
def get_resource_id(dataset_type, dataset_id, trait_id = None, all_resources = None):
if not all_resources:
all_resources = get_resources()
resource_list = [[key, json.loads(value)] for key, value in all_resources.items()]
if not trait_id:
matched_resources = [resource[0] for resource in resource_list if resource[1]['data']['dataset'] == dataset_id]
else:
matched_resources = [resource[0] for resource in resource_list if resource[1]['data']['dataset'] == dataset_id and resource[1]['data']['trait'] == trait_id]
if len(matched_resources):
return matched_resources[0]
else:
return False
def get_resource_info(resource_id):
resource_info = Redis.hget("resources", resource_id)
return json.loads(resource_info)
def add_resource(resource_info):
if 'trait' in resource_info['data']:
resource_id = hmac.data_hmac('{}:{}'.format(str(resource_info['data']['dataset']), str(resource_info['data']['trait'])))
else:
resource_id = hmac.data_hmac('{}'.format(str(resource_info['data']['dataset'])))
Redis.hset("resources", resource_id, json.dumps(resource_info))
return resource_info
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