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"""
Rhizi REST web API:
- make use of rz_kernel for core logic execution
- make use of rz_api_common for common API logic
"""
from flask import Flask
from flask import escape
from flask import jsonify
from flask import make_response
from flask import redirect
from flask import render_template
from flask import request
from flask import send_from_directory
from flask import session
from flask import url_for
from flask import current_app
import flask
import logging
import traceback
from model.graph import Attr_Diff
from model.graph import Topo_Diff
from rz_api_common import sanitize_input__attr_diff, map_rzdoc_name_to_rzdoc_id
from rz_api_common import sanitize_input__topo_diff
from rz_api_common import validate_obj__attr_diff
from rz_req_handling import common_resp_handle
from db_op import DBO_rz_clone
from neo4j_cypher import QT_Node_Filter__Doc_ID_Label
log = logging.getLogger('rhizi')
db_ctl = None # injected: DB controller
def __context__common(rzdoc_id=None):
class Req_Context():
"""
Request context:
- user_name
- rzdoc
"""
def __init__(self):
self.user_name = None
self.rzdoc = None
"""
build a common rquest context to pass along with a kernel diff commit:
- set user_name
"""
ret = Req_Context()
if session.has_key('username'):
ret.user_name = session['username']
ret['rzdoc_id'] = rzdoc_id
return ret
def sanitize_input(req):
@common_rest_req_exception_handler
def diff_commit__topo():
"""
REST API wrapper around diff_commit__topo():
- extract topo_diff from request
- handle success/error outcomes
"""
def sanitize_input(req):
rzdoc_name = request.get_json().get('rzdoc_name')
topo_diff_dict = request.get_json()['topo_diff']
topo_diff = Topo_Diff.from_json_dict(topo_diff_dict)
sanitize_input__topo_diff(topo_diff)
return rzdoc_name, topo_diff
rzdoc_name, topo_diff = sanitize_input(request)
ctx = __context__common(rzdoc_name)
kernel = flask.current_app.kernel
_, commit_ret = kernel.diff_commit__topo(topo_diff, ctx)
return common_resp_handle__success(data=commit_ret)
@common_rest_req_exception_handler
def diff_commit__attr():
"""
commit a graph attribute diff
"""
def sanitize_input(req):
rzdoc_name = request.get_json().get('rzdoc_name')
attr_diff_dict = request.get_json()['attr_diff']
attr_diff = Attr_Diff.from_json_dict(attr_diff_dict)
sanitize_input__attr_diff(attr_diff)
return rzdoc_name, attr_diff;
rzdoc_name, attr_diff = sanitize_input(request)
validate_obj__attr_diff(attr_diff)
ctx = __context__common(rzdoc_name)
kernel = flask.current_app.kernel
_, commit_ret = kernel.diff_commit__attr(attr_diff, ctx)
return common_resp_handle__success(data=commit_ret)
def diff_commit__vis():
pass
@common_rest_req_exception_handler
def rzdoc_clone():
def sanitize_input(req):
rzdoc_name = req.get_json().get('rzdoc_name')
return rzdoc_name
rzdoc_name = sanitize_input(request)
if None == rzdoc_name: # load welcome doc by default
rzdoc_name = current_app.rz_config.rzdoc__mainpage_name
kernel = flask.current_app.kernel
ctx = __context__common(rzdoc_name)
topo_diff = kernel.rzdoc__clone(ctx.rzdoc, ctx)
topo_diff_json = topo_diff.to_json_dict() # serialize Topo_Diff before including in response
return common_resp_handle__success(data=topo_diff_json)
@common_rest_req_exception_handler
def rzdoc__create(rzdoc_name):
"""
create RZ doc
"""
s_rzdoc_name = sanitize_input__rzdoc_name(rzdoc_name)
kernel = flask.current_app.kernel
ctx = __context__common(rzdoc_name=None) # avoid rzdoc cache lookup exception
kernel.rzdoc__create(s_rzdoc_name, ctx)
return make_response__json(status=HTTP_STATUS__201_CREATED)
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