15
15
# along with this program; if not, write to the Free Software
16
16
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18
# Module: TutorialService
22
# Provides the AJAX backend for the tutorial application.
23
# This allows several actions to be performed on the code the student has
24
# typed into one of the exercise boxes.
28
# The arguments determine what is to be done on this file.
30
# "action". One of the tutorialservice actions.
31
# "exercise" - The path to a exercise file (including the .xml extension),
32
# relative to the subjects base directory.
33
# action "save" or "test" (POST only):
34
# "code" - Full text of the student's code being submitted.
35
# action "getattempts": No arguments. Returns a list of
36
# {'date': 'formatted_date', 'complete': bool} dicts.
37
# action "getattempt":
38
# "date" - Formatted date. Gets most recent attempt before (and including)
40
# Returns JSON string containing code, or null.
42
# Returns a JSON response string indicating the results.
18
# Author: Matt Giuca, Nick Chadwick
20
'''AJAX backend for the tutorial application.'''
49
from ivle import (db, util, console)
51
import test # XXX: Really .test, not real test.
30
import ivle.webapp.tutorial.test
32
from ivle.webapp.base.rest import JSONRESTView, named_operation
33
from ivle.webapp.errors import NotFound
53
35
# If True, getattempts or getattempt will allow browsing of inactive/disabled
54
36
# attempts. If False, will not allow this.
55
37
HISTORY_ALLOW_INACTIVE = False
58
"""Handler for Ajax backend TutorialService app."""
59
# Set request attributes
60
req.write_html_head_foot = False # No HTML
63
req.throw_error(req.HTTP_BAD_REQUEST)
64
fields = req.get_fieldstorage()
65
act = fields.getfirst('action')
66
exercise = fields.getfirst('exercise')
67
if act is None or exercise is None:
68
req.throw_error(req.HTTP_BAD_REQUEST)
70
exercise = exercise.value
72
if act == 'save' or act == 'test':
74
if req.method != 'POST':
75
req.throw_error(req.HTTP_BAD_REQUEST)
77
code = fields.getfirst('code')
79
req.throw_error(req.HTTP_BAD_REQUEST)
83
handle_save(req, exercise, code, fields)
85
handle_test(req, exercise, code, fields)
86
elif act == 'getattempts':
87
handle_getattempts(req, exercise)
88
elif act == 'getattempt':
89
date = fields.getfirst('date')
91
req.throw_error(req.HTTP_BAD_REQUEST)
93
# Convert into a struct_time
94
# The time *should* be in the same format as the DB (since it should
95
# be bounced back to us from the getattempts output). Assume this.
97
date = time.strptime(date, db.TIMESTAMP_FORMAT)
99
# Date was not in correct format
100
req.throw_error(req.HTTP_BAD_REQUEST)
101
handle_getattempt(req, exercise, date)
103
req.throw_error(req.HTTP_BAD_REQUEST)
105
def handle_save(req, exercise, code, fields):
106
"""Handles a save action. This saves the user's code without executing it.
108
# Need to open JUST so we know this is a real exercise.
109
# (This avoids users submitting code for bogus exercises).
110
exercisefile = util.open_exercise_file(exercise)
111
if exercisefile is None:
112
req.throw_error(req.HTTP_NOT_FOUND,
113
"The exercise was not found.")
116
req.write('{"result": "ok"}')
121
conn.write_problem_save(
122
login = req.user.login,
123
exercisename = exercise,
124
date = time.localtime(),
129
def handle_test(req, exercise, code, fields):
130
"""Handles a test action."""
132
exercisefile = util.open_exercise_file(exercise)
133
if exercisefile is None:
134
req.throw_error(req.HTTP_NOT_FOUND,
135
"The exercise was not found.")
137
# Start a console to run the tests on
138
jail_path = os.path.join(ivle.conf.jail_base, req.user.login)
139
working_dir = os.path.join("/home", req.user.login)
140
cons = console.Console(req.user.unixid, jail_path, working_dir)
142
# Parse the file into a exercise object using the test suite
143
exercise_obj = test.parse_exercise_file(exercisefile, cons)
146
# Run the test cases. Get the result back as a JSONable object.
148
test_results = exercise_obj.run_tests(code)
155
conn.insert_problem_attempt(
156
login = req.user.login,
157
exercisename = exercise,
158
date = time.localtime(),
159
complete = test_results['passed'],
39
TIMESTAMP_FORMAT = '%Y-%m-%d %H:%M:%S'
42
class AttemptsRESTView(JSONRESTView):
43
'''REST view of a user's attempts at an exercise.'''
44
def __init__(self, req, subject, worksheet, exercise, username):
45
# TODO: Find exercise within worksheet.
46
self.user = ivle.database.User.get_by_login(req.store, username)
49
self.exercise = exercise
52
"""Handles a GET Attempts action."""
53
exercise = ivle.database.Exercise.get_by_name(req.store,
56
attempts = ivle.worksheet.get_exercise_attempts(req.store, self.user,
57
exercise, allow_inactive=HISTORY_ALLOW_INACTIVE)
58
# attempts is a list of ExerciseAttempt objects. Convert to dictionaries
59
time_fmt = lambda dt: datetime.datetime.strftime(dt, TIMESTAMP_FORMAT)
60
attempts = [{'date': time_fmt(a.date), 'complete': a.complete}
66
def PUT(self, req, data):
67
''' Tests the given submission '''
68
exercisefile = ivle.util.open_exercise_file(self.exercise)
69
if exercisefile is None:
70
req.throw_error(req.HTTP_NOT_FOUND,
71
"The exercise was not found.")
73
# Start a console to run the tests on
74
jail_path = os.path.join(ivle.conf.jail_base, req.user.login)
75
working_dir = os.path.join("/home", req.user.login)
76
cons = ivle.console.Console(req.user.unixid, jail_path, working_dir)
78
# Parse the file into a exercise object using the test suite
79
exercise_obj = ivle.webapp.tutorial.test.parse_exercise_file(
83
# Run the test cases. Get the result back as a JSONable object.
85
test_results = exercise_obj.run_tests(data['code'])
90
# Get the Exercise from the database
91
exercise = ivle.database.Exercise.get_by_name(req.store, self.exercise)
93
attempt = ivle.database.ExerciseAttempt(user=req.user,
95
date=datetime.datetime.now(),
96
complete=test_results['passed'],
98
text=unicode(data['code']))
100
req.store.add(attempt)
162
102
# Query the DB to get an updated score on whether or not this problem
163
103
# has EVER been completed (may be different from "passed", if it has
164
104
# been completed before), and the total number of attempts.
165
completed, attempts = conn.get_problem_status(req.user.login,
105
completed, attempts = ivle.worksheet.get_exercise_status(req.store,
167
107
test_results["completed"] = completed
168
108
test_results["attempts"] = attempts
170
req.write(cjson.encode(test_results))
174
def handle_getattempts(req, exercise):
175
"""Handles a getattempts action."""
178
attempts = conn.get_problem_attempts(
179
login=req.user.login,
180
exercisename=exercise,
181
allow_inactive=HISTORY_ALLOW_INACTIVE)
182
req.write(cjson.encode(attempts))
186
def handle_getattempt(req, exercise, date):
187
"""Handles a getattempts action. Date is a struct_time."""
190
attempt = conn.get_problem_attempt(
191
login=req.user.login,
192
exercisename=exercise,
194
allow_inactive=HISTORY_ALLOW_INACTIVE)
195
# attempt may be None; will write "null"
196
req.write(cjson.encode({'code': attempt}))
113
class AttemptRESTView(JSONRESTView):
114
'''REST view of an exercise attempt.'''
116
def __init__(self, req, subject, worksheet, exercise, username, date):
117
# TODO: Find exercise within worksheet.
118
user = ivle.database.User.get_by_login(req.store, username)
123
date = datetime.datetime.strptime(date, TIMESTAMP_FORMAT)
127
exercise = ivle.database.Exercise.get_by_name(req.store, exercise)
128
attempt = ivle.worksheet.get_exercise_attempt(req.store, user,
129
exercise, as_of=date, allow_inactive=HISTORY_ALLOW_INACTIVE)
134
self.context = attempt
137
return {'code': self.context.text}
140
class ExerciseRESTView(JSONRESTView):
141
'''REST view of an exercise.'''
143
def save(self, req, text):
144
# Need to open JUST so we know this is a real exercise.
145
# (This avoids users submitting code for bogus exercises).
146
exercisefile = ivle.util.open_exercise_file(self.exercise)
147
if exercisefile is None:
151
exercise = ivle.database.Exercise.get_by_name(req.store, self.exercise)
152
ivle.worksheet.save_exercise(req.store, req.user, exercise,
153
unicode(text), datetime.datetime.now())
154
return {"result": "ok"}