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"""
Rhizi web API
@deprecated: destined to split into rz_api_rest & rz_api_websocket
"""
from flask import current_app
from flask import escape
from flask import render_template
from flask import request
from flask import session
import logging
import traceback
from db_op import DBO_diff_commit__topo
from db_op import DBO_load_link_set
from db_op import DBO_match_node_id_set
from db_op import DBO_match_node_set_by_id_attribute
from db_op import DBO_rz_clone
from model.graph import Topo_Diff
from model.model import Link
from rz_api_common import __sanitize_input, map_rzdoc_name_to_rzdoc_id
from rz_api_common import sanitize_input__topo_diff
from rz_api_rest import common_resp_handle
from neo4j_cypher import QT_Node_Filter__Doc_ID_Label
log = logging.getLogger('rhizi')
db_ctl = None # injected: DB controller
def __common_exec(op, on_success=common_resp_handle, on_error=common_resp_handle):
"""
@param on_success: should return a Flask Response object
@param on_error: should return a Flask Response object
"""
try:
op_ret = db_ctl.exec_op(op)
return on_success(op_ret)
except Exception as e:
log.error(e.message)
log.error(traceback.print_exc())
return on_error(error='error occurred')
def load_node_set_by_id_attr():
"""
load node-set by ID attribute
@param id_set: list of node ids to match id attribute against
@return: a list of nodes whose id attribute matches 'id' or
an empty list if the requested node is not found
@raise exception: on error
"""
req_json = request.get_json()
id_set = req_json['id_set']
__sanitize_input(id_set)
return __load_node_set_by_id_attr_common(id_set)
def __load_node_set_by_id_attr_common(id_set):
"""
@param f_k: optional attribute filter key
@param f_vset: possible key values to match against
"""
op = DBO_match_node_set_by_id_attribute(id_set=id_set)
try:
n_set = db_ctl.exec_op(op)
return common_resp_handle(data=n_set)
except Exception as e:
log.exception(e)
return common_resp_handle(error='unable to load node with ids: {0}'.format(id_set))
def match_node_set_by_attr_filter_map(attr_filter_map):
"""
@param attr_filter_map
@return: a set of node DB id's
"""
op = DBO_match_node_id_set(attr_filter_map)
return __common_exec(op)
def load_link_set_by_link_ptr_set():
def deserialize_param_set(param_json):
l_ptr_set_raw = param_json['link_ptr_set']
__sanitize_input(l_ptr_set_raw)
l_ptr_set = []
for lptr_dict in l_ptr_set_raw:
src_id = lptr_dict.get('__src_id')
dst_id = lptr_dict.get('__dst_id')
l_ptr_set += [Link.Link_Ptr(src_id=src_id, dst_id=dst_id) ]
return l_ptr_set
l_ptr_set = deserialize_param_set(request.get_json())
op = DBO_load_link_set.init_from_link_ptr_set(l_ptr_set)
return __common_exec(op)
def rz_clone():
def sanitize_input(req):
rzdoc_name = req.get_json().get('rzdoc_name')
return rzdoc_name
def on_success(topo_diff):
# serialize Topo_Diff before including in response
topo_diff_json = topo_diff.to_json_dict()
return common_resp_handle(topo_diff_json)
rzdoc_name = sanitize_input(request)
if None == rzdoc_name: # load welcome doc by default
rzdoc_name = current_app.rz_config.rzdoc_name__mainpage
rzdoc_id = map_rzdoc_name_to_rzdoc_id(rzdoc_name)
op = DBO_rz_clone()
op = QT_Node_Filter__Doc_ID_Label(rzdoc_id)(op)
return __common_exec(op, on_success=on_success)
def diff_commit__set():
"""
commit a diff set
"""
def sanitize_input(req):
diff_set_dict = req.get_json()['diff_set']
topo_diff_dict = diff_set_dict['__diff_set_topo'][0]
topo_diff = Topo_Diff.from_json_dict(topo_diff_dict)
sanitize_input__topo_diff(topo_diff)
return topo_diff;
topo_diff = sanitize_input(request)
op = DBO_diff_commit__topo(topo_diff)
return __common_exec(op)
def index():
# fetch rz_username for welcome message
email_address = session.get('username')
rz_username = "Anonymous Stranger"
role_set = []
if None != email_address: # session cookie passed & contains uid (email_address)
try:
uid, u_account = current_app.user_db.lookup_user__by_email_address(email_address)
role_set = u_account.role_set
rz_username = escape(u_account.rz_username)
except Exception as e:
# may occur on user_db reset or malicious cookie != stale cookie,
# for which the user would at least be known to the user_db
log.exception(e)
# establish rz_config template values
client_POV_server_name = request.headers.get('X-Forwarded-Host') # first probe for reverse proxy headers
if None == client_POV_server_name:
client_POV_server_name = request.headers.get('Host') # otherwise use Host: header
assert None != client_POV_server_name, 'failed to establish hostname, unable to construct rz_config'
hostname = client_POV_server_name
port = 80
if ':' in client_POV_server_name:
hostname = client_POV_server_name.split(':')[0]
port = client_POV_server_name.split(':')[1]
return render_template('index.html',
rz_username=rz_username,
rz_config__hostname=hostname,
rz_config__port=port,
rz_config__optimized_main='true' if current_app.rz_config.optimized_main else 'false',
rz_config__role_set=role_set)
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