1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
|
# -------------------------------------------------------------------------
# Copyright (c) 2020 AT&T Intellectual Property
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# -------------------------------------------------------------------------
#
import json
import traceback
import mysql.connector
from flask import g, Flask, Response
from osdf.config.base import osdf_config
from osdf.logging.osdf_logging import debug_log, error_log
from osdf.operation.exceptions import BusinessException
def init_db():
if is_db_enabled():
get_db()
def get_db():
"""Opens a new database connection if there is none yet for the
current application context.
"""
if not hasattr(g, 'pg'):
properties = osdf_config['deployment']
host, db_port, db = properties["osdfDatabaseHost"], properties["osdfDatabasePort"], \
properties.get("osdfDatabaseSchema")
user, password = properties["osdfDatabaseUsername"], properties["osdfDatabasePassword"]
g.pg = mysql.connector.connect(host=host, port=db_port, user=user, password=password, database=db)
return g.pg
def close_db():
"""Closes the database again at the end of the request."""
if hasattr(g, 'pg'):
g.pg.close()
app = Flask(__name__)
def create_model_data(model_api):
with app.app_context():
try:
model_info = model_api['modelInfo']
model_id = model_info['modelId']
debug_log.debug(
"persisting model_api {}".format(model_id))
connection = get_db()
cursor = connection.cursor(buffered=True)
query = "SELECT model_id FROM optim_model_data WHERE model_id = %s"
values = (model_id,)
cursor.execute(query, values)
if cursor.fetchone() is None:
query = "INSERT INTO optim_model_data (model_id, model_content, description, solver_type) VALUES " \
"(%s, %s, %s, %s)"
values = (model_id, model_info['modelContent'], model_info.get('description'), model_info['solver'])
cursor.execute(query, values)
g.pg.commit()
debug_log.debug("A record successfully inserted for request_id: {}".format(model_id))
return retrieve_model_data(model_id)
close_db()
else:
query = "UPDATE optim_model_data SET model_content = %s, description = %s, solver_type = %s where " \
"model_id = %s "
values = (model_info['modelContent'], model_info.get('description'), model_info['solver'], model_id)
cursor.execute(query, values)
g.pg.commit()
return retrieve_model_data(model_id)
close_db()
except Exception as err:
error_log.error("error for request_id: {} - {}".format(model_id, traceback.format_exc()))
close_db()
raise BusinessException(err)
def retrieve_model_data(model_id):
status, resp_data = get_model_data(model_id)
if status == 200:
resp = json.dumps(build_model_dict(resp_data))
return build_response(resp, status)
else:
resp = json.dumps({
'modelId': model_id,
'statusMessage': "Error retrieving the model data for model {} due to {}".format(model_id, resp_data)
})
return build_response(resp, status)
def build_model_dict(resp_data, content_needed=True):
resp = {'modelId': resp_data[0], 'description': resp_data[2] if resp_data[2] else '',
'solver': resp_data[3]}
if content_needed:
resp.update({'modelContent': resp_data[1]})
return resp
def build_response(resp, status):
response = Response(resp, content_type='application/json; charset=utf-8')
response.headers.add('content-length', len(resp))
response.status_code = status
return response
def delete_model_data(model_id):
with app.app_context():
try:
debug_log.debug("deleting model data given model_id = {}".format(model_id))
d = dict();
connection = get_db()
cursor = connection.cursor(buffered=True)
query = "delete from optim_model_data WHERE model_id = %s"
values = (model_id,)
cursor.execute(query, values)
g.pg.commit()
close_db()
resp = {
"statusMessage": "model data for modelId {} deleted".format(model_id)
}
return build_response(json.dumps(resp), 200)
except Exception as err:
error_log.error("error deleting model_id: {} - {}".format(model_id, traceback.format_exc()))
close_db()
raise BusinessException(err)
def get_model_data(model_id):
with app.app_context():
try:
debug_log.debug("getting model data given model_id = {}".format(model_id))
d = dict();
connection = get_db()
cursor = connection.cursor(buffered=True)
query = "SELECT model_id, model_content, description, solver_type FROM optim_model_data WHERE model_id = %s"
values = (model_id,)
cursor.execute(query, values)
if cursor is None:
return 400, "FAILED"
else:
rows = cursor.fetchone()
if rows is not None:
index = 0
for row in rows:
d[index] = row
index = index + 1
return 200, d
else:
close_db()
return 500, "NOT_FOUND"
except Exception:
error_log.error("error for request_id: {} - {}".format(model_id, traceback.format_exc()))
close_db()
return 500, "FAILED"
def retrieve_all_models():
status, resp_data = get_all_models()
model_list = []
if status == 200:
for r in resp_data:
model_list.append(build_model_dict(r, False))
resp = json.dumps(model_list)
return build_response(resp, status)
else:
resp = json.dumps({
'statusMessage': "Error retrieving all the model data due to {}".format(resp_data)
})
return build_response(resp, status)
def get_all_models():
with app.app_context():
try:
debug_log.debug("getting all model data".format())
connection = get_db()
cursor = connection.cursor(buffered=True)
query = "SELECT model_id, model_content, description, solver_type FROM optim_model_data"
cursor.execute(query)
if cursor is None:
return 400, "FAILED"
else:
rows = cursor.fetchall()
if rows is not None:
return 200, rows
else:
close_db()
return 500, "NOT_FOUND"
except Exception:
error_log.error("error for request_id: {}".format(traceback.format_exc()))
close_db()
return 500, "FAILED"
def is_db_enabled():
return osdf_config['deployment'].get('isDatabaseEnabled', False)
|
