cafe-grader-web

Commit r514:41d1cd2793ff public

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Description:
merge
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[Not Reviewed]
References:
merge java
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r514:41d1cd2793ff - - 11 files changed: 301 inserted, 132 deleted

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@@ -0,0 +1,44
1 + - param = {} unless param
2 + - graph_height = param[:graph_height] || 100
3 + - bar_width = param[:bar_width] || 14
4 + - graph_width = (bar_width * histogram[:data].count) + 20
5 + :css
6 + .hist_bar {
7 + width: #{bar_width-1}px;
8 + position: absolute;
9 + background-color: lightblue;
10 + }
11 + .hist_fill {
12 + width: #{bar_width-1}px;
13 + position: absolute;
14 + background-color: #eee;
15 + }
16 + .hist_text {
17 + position: absolute;
18 + font-size:5px;
19 + }
20 +
21 + %div{style: "position: relative; width: #{graph_width}px; height: 125px; background-color:#fff;" }
22 + //draw background
23 + - histogram[:data].each_index do |i|
24 + - height = histogram[:data][i] * graph_height / histogram[:summary][:max]
25 + - top = graph_height - height
26 + - left = graph_width - (i+1)*bar_width
27 + %div.hist_fill{style: "top: 0px; height: #{graph_height - height}px; left: #{left}px;" }
28 + // draw horizontal line
29 + - line = 3
30 + - line.times do |i|
31 + - top = graph_height - graph_height * (i+0.5)/ line
32 + %div{style: "position:absolute;width: #{graph_width-21}px;height: 1px;left: 20px;top:#{top}px;background-color: #333;"}
33 + %div.hist_text{style: "position:absolute;left: 0px;top:#{top-6}px"}
34 + =((i+0.5) * histogram[:summary][:max] / line).to_i
35 + // draw the actual bar and text
36 + - @histogram[:data].each_index do |i|
37 + - height = histogram[:data][i] * graph_height / histogram[:summary][:max]
38 + - top = graph_height - height
39 + - left = graph_width - (i+1)*bar_width
40 + %div.hist_bar{style: "top: #{top}px; height: #{height}px; left: #{left}px; dae: #{histogram[:data][i]}" }
41 + - if i % 7 == 1
42 + %div.hist_text{style: "top:#{graph_height + 5}px;left: #{left}px;"} #{(Time.zone.today - i.day).strftime('%-d')}
43 + - if (Time.now.in_time_zone - i.day).day == 15
44 + %div.hist_text{style: "top:#{graph_height + 15}px;left: #{left}px;"} #{(Time.zone.today - i.day).strftime('%b')}
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@@ -57,204 +57,221
57 57 @problem.full_score = 100
58 58 @problem.available = false
59 59 @problem.test_allowed = true
60 60 @problem.output_only = false
61 61 @problem.date_added = Time.new
62 62 if @problem.save
63 63 flash[:notice] = 'Problem was successfully created.'
64 64 redirect_to :action => 'list'
65 65 else
66 66 flash[:notice] = 'Error saving problem'
67 67 redirect_to :action => 'list'
68 68 end
69 69 end
70 70
71 71 def edit
72 72 @problem = Problem.find(params[:id])
73 73 @description = @problem.description
74 74 end
75 75
76 76 def update
77 77 @problem = Problem.find(params[:id])
78 78 @description = @problem.description
79 79 if @description == nil and params[:description][:body]!=''
80 80 @description = Description.new(params[:description])
81 81 if !@description.save
82 82 flash[:notice] = 'Error saving description'
83 83 render :action => 'edit' and return
84 84 end
85 85 @problem.description = @description
86 86 elsif @description!=nil
87 87 if !@description.update_attributes(params[:description])
88 88 flash[:notice] = 'Error saving description'
89 89 render :action => 'edit' and return
90 90 end
91 91 end
92 92 if params[:file] and params[:file].content_type != 'application/pdf'
93 93 flash[:notice] = 'Error: Uploaded file is not PDF'
94 94 render :action => 'edit' and return
95 95 end
96 96 if @problem.update_attributes(params[:problem])
97 97 flash[:notice] = 'Problem was successfully updated.'
98 98 unless params[:file] == nil or params[:file] == ''
99 99 flash[:notice] = 'Problem was successfully updated and a new PDF file is uploaded.'
100 100 out_dirname = "#{Problem.download_file_basedir}/#{@problem.id}"
101 101 if not FileTest.exists? out_dirname
102 102 Dir.mkdir out_dirname
103 103 end
104 104
105 105 out_filename = "#{out_dirname}/#{@problem.name}.pdf"
106 106 if FileTest.exists? out_filename
107 107 File.delete out_filename
108 108 end
109 109
110 110 File.open(out_filename,"wb") do |file|
111 111 file.write(params[:file].read)
112 112 end
113 113 @problem.description_filename = "#{@problem.name}.pdf"
114 114 @problem.save
115 115 end
116 116 redirect_to :action => 'show', :id => @problem
117 117 else
118 118 render :action => 'edit'
119 119 end
120 120 end
121 121
122 122 def destroy
123 123 Problem.find(params[:id]).destroy
124 124 redirect_to :action => 'list'
125 125 end
126 126
127 127 def toggle
128 128 @problem = Problem.find(params[:id])
129 129 @problem.available = !(@problem.available)
130 130 @problem.save
131 131 end
132 132
133 133 def turn_all_off
134 134 Problem.find(:all,
135 135 :conditions => "available = 1").each do |problem|
136 136 problem.available = false
137 137 problem.save
138 138 end
139 139 redirect_to :action => 'list'
140 140 end
141 141
142 142 def turn_all_on
143 143 Problem.find(:all,
144 144 :conditions => "available = 0").each do |problem|
145 145 problem.available = true
146 146 problem.save
147 147 end
148 148 redirect_to :action => 'list'
149 149 end
150 150
151 151 def stat
152 152 @problem = Problem.find(params[:id])
153 - if !@problem.available
153 + unless @problem.available or session[:admin]
154 154 redirect_to :controller => 'main', :action => 'list'
155 - else
156 - @submissions = Submission.includes(:user).where(problem_id: params[:id]).order(:user_id,:id)
155 + return
157 156 end
157 + @submissions = Submission.includes(:user).where(problem_id: params[:id]).order(:user_id,:id)
158 +
159 + #stat summary
160 + range =65
161 + @histogram = { data: Array.new(range,0), summary: {} }
162 + user = Hash.new(0)
163 + @submissions.find_each do |sub|
164 + d = (DateTime.now.in_time_zone - sub.submitted_at) / 24 / 60 / 60
165 + @histogram[:data][d.to_i] += 1 if d < range
166 + user[sub.user_id] = [user[sub.user_id], (sub.points >= @problem.full_score) ? 1 : 0].max
167 + end
168 + @histogram[:summary][:max] = [@histogram[:data].max,1].max
169 +
170 + @summary = { attempt: user.count, solve: 0 }
171 + user.each_value { |v| @summary[:solve] += 1 if v == 1 }
158 172 end
159 173
160 174 def manage
161 175 @problems = Problem.find(:all, :order => 'date_added DESC')
162 176 end
163 177
164 178 def do_manage
165 179 if params.has_key? 'change_date_added'
166 180 change_date_added
167 181 elsif params.has_key? 'add_to_contest'
168 182 add_to_contest
169 183 elsif params.has_key? 'enable_problem'
170 184 set_available(true)
171 185 elsif params.has_key? 'disable_problem'
172 186 set_available(false)
173 187 end
174 188 redirect_to :action => 'manage'
175 189 end
176 190
177 191 def import
178 192 @allow_test_pair_import = allow_test_pair_import?
179 193 end
180 194
181 195 def do_import
182 196 old_problem = Problem.find_by_name(params[:name])
183 197 if !allow_test_pair_import? and params.has_key? :import_to_db
184 198 params.delete :import_to_db
185 199 end
186 200 @problem, import_log = Problem.create_from_import_form_params(params,
187 201 old_problem)
188 202
189 203 if !@problem.errors.empty?
190 204 render :action => 'import' and return
191 205 end
192 206
193 207 if old_problem!=nil
194 208 flash[:notice] = "The test data has been replaced for problem #{@problem.name}"
195 209 end
196 210 @log = import_log
197 211 end
198 212
199 213 def remove_contest
200 214 problem = Problem.find(params[:id])
201 215 contest = Contest.find(params[:contest_id])
202 216 if problem!=nil and contest!=nil
203 217 problem.contests.delete(contest)
204 218 end
205 219 redirect_to :action => 'manage'
206 220 end
207 221
208 222 ##################################
209 223 protected
210 224
211 225 def allow_test_pair_import?
212 226 if defined? ALLOW_TEST_PAIR_IMPORT
213 227 return ALLOW_TEST_PAIR_IMPORT
214 228 else
215 229 return false
216 230 end
217 231 end
218 232
219 233 def change_date_added
220 234 problems = get_problems_from_params
221 235 year = params[:date_added][:year].to_i
222 236 month = params[:date_added][:month].to_i
223 237 day = params[:date_added][:day].to_i
224 238 date = Date.new(year,month,day)
225 239 problems.each do |p|
226 240 p.date_added = date
227 241 p.save
228 242 end
229 243 end
230 244
231 245 def add_to_contest
232 246 problems = get_problems_from_params
233 247 contest = Contest.find(params[:contest][:id])
234 248 if contest!=nil and contest.enabled
235 249 problems.each do |p|
236 250 p.contests << contest
237 251 end
238 252 end
239 253 end
240 254
241 255 def set_available(avail)
242 256 problems = get_problems_from_params
243 257 problems.each do |p|
244 258 p.available = avail
245 259 p.save
246 260 end
247 261 end
248 262
249 263 def get_problems_from_params
250 264 problems = []
251 265 params.keys.each do |k|
252 266 if k.index('prob-')==0
253 267 name, id, order = k.split('-')
254 268 problems << Problem.find(id)
255 269 end
256 270 end
257 271 problems
258 272 end
259 273
274 + def get_problems_stat
275 + end
276 +
260 277 end
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@@ -12,184 +12,180
12 12 }
13 13
14 14 def login_stat
15 15 @logins = Array.new
16 16
17 17 date_and_time = '%Y-%m-%d %H:%M'
18 18 begin
19 19 md = params[:since_datetime].match(/(\d+)-(\d+)-(\d+) (\d+):(\d+)/)
20 20 @since_time = Time.zone.local(md[1].to_i,md[2].to_i,md[3].to_i,md[4].to_i,md[5].to_i)
21 21 rescue
22 22 @since_time = DateTime.new(1000,1,1)
23 23 end
24 24 begin
25 25 md = params[:until_datetime].match(/(\d+)-(\d+)-(\d+) (\d+):(\d+)/)
26 26 @until_time = Time.zone.local(md[1].to_i,md[2].to_i,md[3].to_i,md[4].to_i,md[5].to_i)
27 27 rescue
28 28 @until_time = DateTime.new(3000,1,1)
29 29 end
30 30
31 31 User.all.each do |user|
32 32 @logins << { id: user.id,
33 33 login: user.login,
34 34 full_name: user.full_name,
35 35 count: Login.where("user_id = ? AND created_at >= ? AND created_at <= ?",
36 36 user.id,@since_time,@until_time)
37 37 .count(:id),
38 38 min: Login.where("user_id = ? AND created_at >= ? AND created_at <= ?",
39 39 user.id,@since_time,@until_time)
40 40 .minimum(:created_at),
41 41 max: Login.where("user_id = ? AND created_at >= ? AND created_at <= ?",
42 42 user.id,@since_time,@until_time)
43 43 .maximum(:created_at),
44 44 ip: Login.where("user_id = ? AND created_at >= ? AND created_at <= ?",
45 45 user.id,@since_time,@until_time)
46 46 .select(:ip_address).uniq
47 47
48 48 }
49 49 end
50 50 end
51 51
52 52 def submission_stat
53 53
54 54 date_and_time = '%Y-%m-%d %H:%M'
55 55 begin
56 56 @since_time = DateTime.strptime(params[:since_datetime],date_and_time)
57 57 rescue
58 58 @since_time = DateTime.new(1000,1,1)
59 59 end
60 60 begin
61 61 @until_time = DateTime.strptime(params[:until_datetime],date_and_time)
62 62 rescue
63 63 @until_time = DateTime.new(3000,1,1)
64 64 end
65 65
66 66 @submissions = {}
67 67
68 68 User.find_each do |user|
69 69 @submissions[user.id] = { login: user.login, full_name: user.full_name, count: 0, sub: { } }
70 70 end
71 71
72 72 Submission.where("submitted_at >= ? AND submitted_at <= ?",@since_time,@until_time).find_each do |s|
73 73 if @submissions[s.user_id]
74 74 if not @submissions[s.user_id][:sub].has_key?(s.problem_id)
75 75 a = nil
76 76 begin
77 77 a = Problem.find(s.problem_id)
78 78 rescue
79 79 a = nil
80 80 end
81 81 @submissions[s.user_id][:sub][s.problem_id] =
82 82 { prob_name: (a ? a.full_name : '(NULL)'),
83 83 sub_ids: [s.id] }
84 84 else
85 85 @submissions[s.user_id][:sub][s.problem_id][:sub_ids] << s.id
86 86 end
87 87 @submissions[s.user_id][:count] += 1
88 88 end
89 89 end
90 90 end
91 91
92 92 def problem_hof
93 93 # gen problem list
94 94 @user = User.find(session[:user_id])
95 95 @problems = @user.available_problems
96 96
97 97 # get selected problems or the default
98 98 if params[:id]
99 99 begin
100 100 @problem = Problem.available.find(params[:id])
101 101 rescue
102 102 redirect_to action: :problem_hof
103 103 flash[:notice] = 'Error: submissions for that problem are not viewable.'
104 104 return
105 105 end
106 106 end
107 107
108 - if @problem
109 - #aggregrate by language
110 - @by_lang = {}
111 - Submission.where(problem_id: @problem.id).find_each do |sub|
112 - lang = Language.find_by_id(sub.language_id)
113 - next unless lang
114 - next unless sub.points >= @problem.full_score
108 + return unless @problem
109 +
110 + @by_lang = {} #aggregrate by language
115 111
116 - #initialize
117 - unless @by_lang.has_key?(lang.pretty_name)
118 - @by_lang[lang.pretty_name] = {
119 - runtime: { avail: false, value: 2**30-1 },
120 - memory: { avail: false, value: 2**30-1 },
121 - length: { avail: false, value: 2**30-1 },
122 - first: { avail: false, value: DateTime.new(3000,1,1) }
123 - }
124 - end
112 + range =65
113 + @histogram = { data: Array.new(range,0), summary: {} }
114 + @summary = {count: 0, solve: 0, attempt: 0}
115 + user = Hash.new(0)
116 + Submission.where(problem_id: @problem.id).find_each do |sub|
117 + #histogram
118 + d = (DateTime.now.in_time_zone - sub.submitted_at) / 24 / 60 / 60
119 + @histogram[:data][d.to_i] += 1 if d < range
125 120
126 - if sub.max_runtime and sub.max_runtime < @by_lang[lang.pretty_name][:runtime][:value]
127 - @by_lang[lang.pretty_name][:runtime] = {
128 - avail: true,
129 - user_id: sub.user_id,
130 - value: sub.max_runtime,
131 - sub_id: sub.id
132 - }
133 - end
121 + @summary[:count] += 1
122 + user[sub.user_id] = [user[sub.user_id], (sub.points >= @problem.full_score) ? 1 : 0].max
134 123
135 - if sub.peak_memory and sub.peak_memory < @by_lang[lang.pretty_name][:memory][:value]
136 - @by_lang[lang.pretty_name][:memory] = {
137 - avail: true,
138 - user_id: sub.user_id,
139 - value: sub.peak_memory,
140 - sub_id: sub.id
141 - }
142 - end
124 + lang = Language.find_by_id(sub.language_id)
125 + next unless lang
126 + next unless sub.points >= @problem.full_score
143 127
144 - if sub.submitted_at and sub.submitted_at < @by_lang[lang.pretty_name][:first][:value] and
145 - !sub.user.admin?
146 - @by_lang[lang.pretty_name][:first] = {
147 - avail: true,
148 - user_id: sub.user_id,
149 - value: sub.submitted_at,
150 - sub_id: sub.id
151 - }
152 - end
128 + #initialize
129 + unless @by_lang.has_key?(lang.pretty_name)
130 + @by_lang[lang.pretty_name] = {
131 + runtime: { avail: false, value: 2**30-1 },
132 + memory: { avail: false, value: 2**30-1 },
133 + length: { avail: false, value: 2**30-1 },
134 + first: { avail: false, value: DateTime.new(3000,1,1) }
135 + }
136 + end
153 137
154 - if @by_lang[lang.pretty_name][:length][:value] > sub.effective_code_length
155 - @by_lang[lang.pretty_name][:length] = {
156 - avail: true,
157 - user_id: sub.user_id,
158 - value: sub.effective_code_length,
159 - sub_id: sub.id
160 - }
161 - end
162 - end
163 -
164 - #process user_id
165 - @by_lang.each do |lang,prop|
166 - prop.each do |k,v|
167 - v[:user] = User.exists?(v[:user_id]) ? User.find(v[:user_id]).full_name : "(NULL)"
168 - end
138 + if sub.max_runtime and sub.max_runtime < @by_lang[lang.pretty_name][:runtime][:value]
139 + @by_lang[lang.pretty_name][:runtime] = { avail: true, user_id: sub.user_id, value: sub.max_runtime, sub_id: sub.id }
169 140 end
170 141
171 - #sum into best
172 - if @by_lang and @by_lang.first
173 - @best = @by_lang.first[1].clone
174 - @by_lang.each do |lang,prop|
175 - if @best[:runtime][:value] >= prop[:runtime][:value]
176 - @best[:runtime] = prop[:runtime]
177 - @best[:runtime][:lang] = lang
178 - end
179 - if @best[:memory][:value] >= prop[:memory][:value]
180 - @best[:memory] = prop[:memory]
181 - @best[:memory][:lang] = lang
182 - end
183 - if @best[:length][:value] >= prop[:length][:value]
184 - @best[:length] = prop[:length]
185 - @best[:length][:lang] = lang
186 - end
187 - if @best[:first][:value] >= prop[:first][:value]
188 - @best[:first] = prop[:first]
189 - @best[:first][:lang] = lang
190 - end
142 + if sub.peak_memory and sub.peak_memory < @by_lang[lang.pretty_name][:memory][:value]
143 + @by_lang[lang.pretty_name][:memory] = { avail: true, user_id: sub.user_id, value: sub.peak_memory, sub_id: sub.id }
144 + end
145 +
146 + if sub.submitted_at and sub.submitted_at < @by_lang[lang.pretty_name][:first][:value] and
147 + !sub.user.admin?
148 + @by_lang[lang.pretty_name][:first] = { avail: true, user_id: sub.user_id, value: sub.submitted_at, sub_id: sub.id }
149 + end
150 +
151 + if @by_lang[lang.pretty_name][:length][:value] > sub.effective_code_length
152 + @by_lang[lang.pretty_name][:length] = { avail: true, user_id: sub.user_id, value: sub.effective_code_length, sub_id: sub.id }
153 + end
154 + end
155 +
156 + #process user_id
157 + @by_lang.each do |lang,prop|
158 + prop.each do |k,v|
159 + v[:user] = User.exists?(v[:user_id]) ? User.find(v[:user_id]).full_name : "(NULL)"
160 + end
161 + end
162 +
163 + #sum into best
164 + if @by_lang and @by_lang.first
165 + @best = @by_lang.first[1].clone
166 + @by_lang.each do |lang,prop|
167 + if @best[:runtime][:value] >= prop[:runtime][:value]
168 + @best[:runtime] = prop[:runtime]
169 + @best[:runtime][:lang] = lang
170 + end
171 + if @best[:memory][:value] >= prop[:memory][:value]
172 + @best[:memory] = prop[:memory]
173 + @best[:memory][:lang] = lang
174 + end
175 + if @best[:length][:value] >= prop[:length][:value]
176 + @best[:length] = prop[:length]
177 + @best[:length][:lang] = lang
178 + end
179 + if @best[:first][:value] >= prop[:first][:value]
180 + @best[:first] = prop[:first]
181 + @best[:first][:lang] = lang
191 182 end
192 183 end
193 184 end
185 +
186 + @histogram[:summary][:max] = [@histogram[:data].max,1].max
187 + @summary[:attempt] = user.count
188 + user.each_value { |v| @summary[:solve] += 1 if v == 1 }
194 189 end
190 +
195 191 end
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@@ -18,159 +18,177
18 18
19 19 verify :method => :post, :only => [:chg_passwd],
20 20 :redirect_to => { :action => :index }
21 21
22 22 #in_place_edit_for :user, :alias_for_editing
23 23 #in_place_edit_for :user, :email_for_editing
24 24
25 25 def index
26 26 if !GraderConfiguration['system.user_setting_enabled']
27 27 redirect_to :controller => 'main', :action => 'list'
28 28 else
29 29 @user = User.find(session[:user_id])
30 30 end
31 31 end
32 32
33 33 def chg_passwd
34 34 user = User.find(session[:user_id])
35 35 user.password = params[:passwd]
36 36 user.password_confirmation = params[:passwd_verify]
37 37 if user.save
38 38 flash[:notice] = 'password changed'
39 39 else
40 40 flash[:notice] = 'Error: password changing failed'
41 41 end
42 42 redirect_to :action => 'index'
43 43 end
44 44
45 45 def new
46 46 @user = User.new
47 47 render :action => 'new', :layout => 'empty'
48 48 end
49 49
50 50 def register
51 51 if(params[:cancel])
52 52 redirect_to :controller => 'main', :action => 'login'
53 53 return
54 54 end
55 55 @user = User.new(params[:user])
56 56 @user.password_confirmation = @user.password = User.random_password
57 57 @user.activated = false
58 58 if (@user.valid?) and (@user.save)
59 59 if send_confirmation_email(@user)
60 60 render :action => 'new_splash', :layout => 'empty'
61 61 else
62 62 @admin_email = GraderConfiguration['system.admin_email']
63 63 render :action => 'email_error', :layout => 'empty'
64 64 end
65 65 else
66 66 @user.errors.add_to_base("Email cannot be blank") if @user.email==''
67 67 render :action => 'new', :layout => 'empty'
68 68 end
69 69 end
70 70
71 71 def confirm
72 72 login = params[:login]
73 73 key = params[:activation]
74 74 @user = User.find_by_login(login)
75 75 if (@user) and (@user.verify_activation_key(key))
76 76 if @user.valid? # check uniquenss of email
77 77 @user.activated = true
78 78 @user.save
79 79 @result = :successful
80 80 else
81 81 @result = :email_used
82 82 end
83 83 else
84 84 @result = :failed
85 85 end
86 86 render :action => 'confirm', :layout => 'empty'
87 87 end
88 88
89 89 def forget
90 90 render :action => 'forget', :layout => 'empty'
91 91 end
92 92
93 93 def retrieve_password
94 94 email = params[:email]
95 95 user = User.find_by_email(email)
96 96 if user
97 97 last_updated_time = user.updated_at || user.created_at || (Time.now.gmtime - 1.hour)
98 98 if last_updated_time > Time.now.gmtime - 5.minutes
99 99 flash[:notice] = 'The account has recently created or new password has recently been requested. Please wait for 5 minutes'
100 100 else
101 101 user.password = user.password_confirmation = User.random_password
102 102 user.save
103 103 send_new_password_email(user)
104 104 flash[:notice] = 'New password has been mailed to you.'
105 105 end
106 106 else
107 107 flash[:notice] = I18n.t 'registration.password_retrieval.no_email'
108 108 end
109 109 redirect_to :action => 'forget'
110 110 end
111 111
112 112 def profile
113 113 @user = User.find(params[:id])
114 - @submission = Submission.where(user_id: params[:id]).all
114 + @submission = Submission.includes(:problem).where(user_id: params[:id])
115 +
116 + range = 120
117 + @histogram = { data: Array.new(range,0), summary: {} }
118 + @summary = {count: 0, solve: 0, attempt: 0}
119 + problem = Hash.new(0)
120 +
121 + @submission.find_each do |sub|
122 + #histogram
123 + d = (DateTime.now.in_time_zone - sub.submitted_at) / 24 / 60 / 60
124 + @histogram[:data][d.to_i] += 1 if d < range
125 +
126 + @summary[:count] += 1
127 + problem[sub.problem] = [problem[sub.problem], (sub.points >= sub.problem.full_score) ? 1 : 0].max
128 + end
129 +
130 + @histogram[:summary][:max] = [@histogram[:data].max,1].max
131 + @summary[:attempt] = problem.count
132 + problem.each_value { |v| @summary[:solve] += 1 if v == 1 }
115 133 end
116 134
117 135 protected
118 136
119 137 def verify_online_registration
120 138 if !GraderConfiguration['system.online_registration']
121 139 redirect_to :controller => 'main', :action => 'login'
122 140 end
123 141 end
124 142
125 143 def send_confirmation_email(user)
126 144 contest_name = GraderConfiguration['contest.name']
127 145 activation_url = url_for(:action => 'confirm',
128 146 :login => user.login,
129 147 :activation => user.activation_key)
130 148 home_url = url_for(:controller => 'main', :action => 'index')
131 149 mail_subject = "[#{contest_name}] Confirmation"
132 150 mail_body = t('registration.email_body', {
133 151 :full_name => user.full_name,
134 152 :contest_name => contest_name,
135 153 :login => user.login,
136 154 :password => user.password,
137 155 :activation_url => activation_url,
138 156 :admin_email => admin_email
139 157 })
140 158
141 159 logger.info mail_body
142 160
143 161 send_mail(user.email, mail_subject, mail_body)
144 162 end
145 163
146 164 def send_new_password_email(user)
147 165 contest_name = GraderConfiguration['contest.name']
148 166 mail_subject = "[#{contest_name}] Password recovery"
149 167 mail_body = t('registration.password_retrieval.email_body', {
150 168 :full_name => user.full_name,
151 169 :contest_name => contest_name,
152 170 :login => user.login,
153 171 :password => user.password,
154 172 :admin_email => admin_email
155 173 })
156 174
157 175 logger.info mail_body
158 176
159 177 send_mail(user.email, mail_subject, mail_body)
160 178 end
161 179
162 180 # allow viewing of regular user profile only when options allow so
163 181 # only admins can view admins profile
164 182 def profile_authorization
165 183 #if view admins' profile, allow only admin
166 184 return false unless(params[:id])
167 185 user = User.find(params[:id])
168 186 return false unless user
169 187 return admin_authorization if user.admin?
170 188 return true if GraderConfiguration["right.user_view_submission"]
171 189
172 190 #finally, we allow only admin
173 191 admin_authorization
174 192 end
175 193
176 194 end
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@@ -1,121 +1,128
1 1 class Problem < ActiveRecord::Base
2 2
3 3 belongs_to :description
4 4 has_and_belongs_to_many :contests, :uniq => true
5 5 has_many :test_pairs, :dependent => :delete_all
6 6
7 7 validates_presence_of :name
8 8 validates_format_of :name, :with => /^\w+$/
9 9 validates_presence_of :full_name
10 10
11 11 scope :available, :conditions => {:available => true}
12 12
13 13 DEFAULT_TIME_LIMIT = 1
14 14 DEFAULT_MEMORY_LIMIT = 32
15 15
16 16 def self.find_available_problems
17 17 Problem.available.all(:order => "date_added DESC, name ASC")
18 18 end
19 19
20 20 def self.create_from_import_form_params(params, old_problem=nil)
21 21 org_problem = old_problem || Problem.new
22 22 import_params, problem = Problem.extract_params_and_check(params,
23 23 org_problem)
24 24
25 25 if !problem.errors.empty?
26 26 return problem, 'Error importing'
27 27 end
28 28
29 29 problem.full_score = 100
30 30 problem.date_added = Time.new
31 31 problem.test_allowed = true
32 32 problem.output_only = false
33 33 problem.available = false
34 34
35 35 if not problem.save
36 36 return problem, 'Error importing'
37 37 end
38 38
39 39 import_to_db = params.has_key? :import_to_db
40 40
41 41 importer = TestdataImporter.new(problem)
42 42
43 43 if not importer.import_from_file(import_params[:file],
44 44 import_params[:time_limit],
45 45 import_params[:memory_limit],
46 46 import_params[:checker_name],
47 47 import_to_db)
48 48 problem.errors.add_to_base('Import error.')
49 49 end
50 50
51 51 return problem, importer.log_msg
52 52 end
53 53
54 54 def self.download_file_basedir
55 55 return "#{Rails.root}/data/tasks"
56 56 end
57 +
58 + def get_submission_stat
59 + result = Hash.new
60 + #total number of submission
61 + result[:total_sub] = Submission.where(problem_id: self.id).count
62 + result[:attempted_user] = Submission.where(problem_id: self.id).group_by(:user_id)
63 + end
57 64
58 65 protected
59 66
60 67 def self.to_i_or_default(st, default)
61 68 if st!=''
62 69 result = st.to_i
63 70 end
64 71 result ||= default
65 72 end
66 73
67 74 def self.to_f_or_default(st, default)
68 75 if st!=''
69 76 result = st.to_f
70 77 end
71 78 result ||= default
72 79 end
73 80
74 81 def self.extract_params_and_check(params, problem)
75 82 time_limit = Problem.to_f_or_default(params[:time_limit],
76 83 DEFAULT_TIME_LIMIT)
77 84 memory_limit = Problem.to_i_or_default(params[:memory_limit],
78 85 DEFAULT_MEMORY_LIMIT)
79 86
80 87 if time_limit<=0 or time_limit >60
81 88 problem.errors.add_to_base('Time limit out of range.')
82 89 end
83 90
84 91 if memory_limit==0 and params[:memory_limit]!='0'
85 92 problem.errors.add_to_base('Memory limit format errors.')
86 93 elsif memory_limit<=0 or memory_limit >512
87 94 problem.errors.add_to_base('Memory limit out of range.')
88 95 end
89 96
90 97 if params[:file]==nil or params[:file]==''
91 98 problem.errors.add_to_base('No testdata file.')
92 99 end
93 100
94 101 checker_name = 'text'
95 102 if ['text','float'].include? params[:checker]
96 103 checker_name = params[:checker]
97 104 end
98 105
99 106 file = params[:file]
100 107
101 108 if !problem.errors.empty?
102 109 return nil, problem
103 110 end
104 111
105 112 problem.name = params[:name]
106 113 if params[:full_name]!=''
107 114 problem.full_name = params[:full_name]
108 115 else
109 116 problem.full_name = params[:name]
110 117 end
111 118
112 119 return [{
113 120 :time_limit => time_limit,
114 121 :memory_limit => memory_limit,
115 122 :file => file,
116 123 :checker_name => checker_name
117 124 },
118 125 problem]
119 126 end
120 127
121 128 end
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@@ -1,61 +1,67
1 1 %style{type: "text/css"}
2 2 = @css_style
3 3 :css
4 4 .field {
5 5 font-weight: bold;
6 6 text-align: right;
7 7 padding: 3px;
8 8 }
9 9
10 10
11 11 %h1= "Submission: #{@submission.id}"
12 12
13 13
14 14 %h2 Stat
15 15
16 16 %table.info
17 17 %thead
18 18 %tr.info-head
19 19 %th Field
20 20 %th Value
21 21 %tbody
22 22 %tr{class: cycle('info-even','info-odd')}
23 23 %td.field User:
24 - %td.value= "(#{@submission.user.login}) #{@submission.user.full_name}"
24 + %td.value
25 + - if @submission.user
26 + = link_to "(#{@submission.user.login})", controller: "users", action: "profile", id: @submission.user
27 + = @submission.user.full_name
28 + - else
29 + = "(n/a)"
25 30 %tr{class: cycle('info-even','info-odd')}
26 31 %td.field Problem:
27 32 %td.value
28 33 - if @submission.problem!=nil
29 - = "(#{@submission.problem.name}) #{@submission.problem.full_name}"
34 + = link_to "(#{@submission.problem.name})", controller: "problems", action: "stat", id: @submission.problem
35 + = @submission.problem.full_name
30 36 - else
31 37 = "(n/a)"
32 38 %tr{class: cycle('info-even','info-odd')}
33 39 %td.field Tries:
34 40 %td.value= @submission.number
35 41 %tr{class: cycle('info-even','info-odd')}
36 42 %td.field Submitted:
37 43 %td.value #{time_ago_in_words(@submission.submitted_at)} ago (at #{@submission.submitted_at.to_formatted_s(:long)})
38 44 %tr{class: cycle('info-even','info-odd')}
39 45 %td.field Graded:
40 46 %td.value #{time_ago_in_words(@submission.graded_at)} ago (at #{@submission.graded_at.to_formatted_s(:long)})
41 47 %tr{class: cycle('info-even','info-odd')}
42 48 %td.field Points:
43 49 %td.value #{@submission.points}/#{@submission.problem.full_score}
44 50 %tr{class: cycle('info-even','info-odd')}
45 51 %td.field Comment:
46 52 %td.value #{@submission.grader_comment}
47 53 %tr{class: cycle('info-even','info-odd')}
48 54 %td.field Runtime (s):
49 55 %td.value #{@submission.max_runtime}
50 56 %tr{class: cycle('info-even','info-odd')}
51 57 %td.field Memory (kb):
52 58 %td.value #{@submission.peak_memory}
53 59 - if session[:admin]
54 60 %tr{class: cycle('info-even','info-odd')}
55 61 %td.field IP:
56 62 %td.value #{@submission.ip_address}
57 63
58 64 %h2 Source code
59 65 //%div.highlight{:style => "border: 1px solid black;"}
60 66 =@formatted_code.html_safe
61 67
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@@ -1,34 +1,51
1 1 :css
2 2 .fix-width {
3 3 font-family: "Consolas, Monaco, Droid Sans Mono,Mono, Monospace,Courier"
4 4 }
5 5
6 6 %h1 Problem stat: #{@problem.name}
7 7 %h2 Overview
8 8
9 +
10 + %table.info
11 + %thead
12 + %tr.info-head
13 + %th Stat
14 + %th Value
15 + %tbody
16 + %tr{class: cycle('info-even','info-odd')}
17 + %td Submissions
18 + %td= @submissions.count
19 + %tr{class: cycle('info-even','info-odd')}
20 + %td Solved/Attempted User
21 + %td #{@summary[:solve]}/#{@summary[:attempt]} (#{(@summary[:solve]*100.0/@summary[:attempt]).round(1)}%)
22 +
23 + %h2 Submissions Count
24 + = render partial: 'application/bar_graph', locals: { histogram: @histogram }
25 +
9 26 %h2 Submissions
10 27 - if @submissions and @submissions.count > 0
11 28 %table.info#main_table
12 29 %thead
13 30 %tr.info-head
14 31 %th ID
15 32 %th Login
16 33 %th Name
17 34 %th Submitted_at
18 35 %th Points
19 36 %th comment
20 37 %tbody
21 38 - row_odd,curr = true,''
22 39 - @submissions.each do |sub|
23 40 - next unless sub.user
24 41 - row_odd,curr = !row_odd, sub.user if curr != sub.user
25 42 %tr{class: row_odd ? "info-odd" : "info-even"}
26 43 %td= link_to sub.id, controller: 'graders', action: 'submission', id: sub.id
27 44 %td= link_to sub.user.login, controller: :users, action: :profile, id: sub.user.id
28 45 %td= sub.user.full_name
29 46 %td= time_ago_in_words(sub.submitted_at) + " ago"
30 47 %td= sub.points
31 48 %td.fix-width= sub.grader_comment
32 49 - else
33 50 No submission
34 51
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@@ -1,79 +1,128
1 + - content_for :header do
2 + = javascript_include_tag 'local_jquery'
3 +
4 + :javascript
5 + $(document).ready( function() {
6 + $("#mem_remark").hover( function() {
7 + $("#mem_remark_box").show();
8 + }, function() {
9 + $("#mem_remark_box").hide();
10 + });
11 + });
12 + alert("hahaha");
1 13 :css
2 14 .hof_user { color: orangered; font-style: italic; }
3 15 .hof_language { color: green; font-style: italic; }
4 16 .hof_value { color: deeppink;font-style: italic; }
17 + .info_param { font-weight: bold;text-align: right; }
18 + .tooltip {
19 + font-family: Verdana,sans-serif;
20 + font-weight: normal;
21 + text-align: left;
22 + font-size: 1.0em;
23 + color: black;
24 + line-height: 1.1;
25 + display: none;
26 + min-width: 20em;
27 + position: absolute;
28 + left: 25px;
29 + bottom: 5px;
30 + border: 1px solid;
31 + padding: 5px;
32 + background-color: #FFF;
33 + word-wrap: break-word;
34 + z-index: 9999;
35 + overflow: auto;
36 + }
5 37
6 - %h2 Overall of #{Problem.find(params[:id]).full_name}
38 + %h1 (#{Problem.find(params[:id]).name}) #{Problem.find(params[:id]).full_name}
39 +
40 + %h2 Problem Stat
41 + %table.info
42 + %thead
43 + %tr.info-head
44 + %th Stat
45 + %th Value
46 + %tbody
47 + %tr{class: cycle('info-even','info-odd')}
48 + %td.info_param Submissions
49 + %td= @summary[:count]
50 + %tr{class: cycle('info-even','info-odd')}
51 + %td.info_param Solved/Attempted User
52 + %td #{@summary[:solve]}/#{@summary[:attempt]} (#{(@summary[:solve]*100.0/@summary[:attempt]).round(1)}%)
53 + - if @best
54 + %tr{class: cycle('info-even','info-odd')}
55 + %td.info_param Best Runtime
56 + %td
57 + by #{link_to @best[:runtime][:user], controller:'users', action:'profile', id:@best[:memory][:user_id]}
58 + using <span class="hof_language">#{@best[:runtime][:lang]}</span>
59 + with <span class="hof_value">#{@best[:runtime][:value] * 1000} milliseconds</span>
60 + at submission
61 + = link_to("#" + @best[:runtime][:sub_id].to_s, controller: 'graders', action: 'submission', id:@best[:runtime][:sub_id])
62 +
63 + %tr{class: cycle('info-even','info-odd')}
64 + %td.info_param
65 + Best Memory Usage
66 + %sup{ id: "mem_remark", style: "position:relative; color: blue;"}
67 + [?]
68 + %span.tooltip#mem_remark_box
69 + This counts only for submission with 100% score.
70 + Right now, java is excluded from memory usage competition. (Because it always uses 2GB memory...)
71 + %td
72 + by #{link_to @best[:memory][:user], controller:'users', action:'profile', id:@best[:memory][:user_id]}
73 + using <span class="hof_language">#{@best[:memory][:lang]}</span>
74 + with <span class="hof_value">#{number_with_delimiter(@best[:memory][:value])} kbytes </span>
75 + at submission
76 + = link_to("#" + @best[:memory][:sub_id].to_s, controller: 'graders' , action: 'submission', id:@best[:memory][:sub_id])
77 +
78 + %tr{class: cycle('info-even','info-odd')}
79 + %td.info_param Shortest Code
80 + %td
81 + by #{link_to @best[:length][:user], controller:'users', action:'profile', id:@best[:length][:user_id]}
82 + using <span class="hof_language">#{@best[:length][:lang]}</span>
83 + with <span class="hof_value">#{@best[:length][:value]} bytes</span>
84 + at submission
85 + = link_to("#" + @best[:length][:sub_id].to_s, controller: 'graders' , action: 'submission', id: @best[:length][:sub_id])
86 +
87 + %tr{class: cycle('info-even','info-odd')}
88 + %td.info_param First solver
89 + %td
90 + #{link_to @best[:first][:user], controller:'users', action:'profile', id:@best[:first][:user_id]} is the first solver
91 + using <span class="hof_language">#{@best[:first][:lang]}</span>
92 + on <span class="hof_value">#{@best[:first][:value]}</span>
93 + at submission
94 + = link_to("#" + @best[:first][:sub_id].to_s, controller: 'graders' , action: 'submission', id: @best[:first][:sub_id])
7 95
8 96 - if @best
9 - %b Best Runtime:
10 - by #{link_to @best[:runtime][:user], controller:'users', action:'profile', id:@best[:memory][:user_id]}
11 - using <span class="hof_language">#{@best[:runtime][:lang]}</span>
12 - with <span class="hof_value">#{@best[:runtime][:value] * 1000} milliseconds</span>
13 - at submission
14 - = link_to("#" + @best[:runtime][:sub_id].to_s, controller: 'graders', action: 'submission', id:@best[:runtime][:sub_id])
15 - %br/
16 -
17 - %b Best Memory Usage:
18 - by #{link_to @best[:memory][:user], controller:'users', action:'profile', id:@best[:memory][:user_id]}
19 - using <span class="hof_language">#{@best[:memory][:lang]}</span>
20 - with <span class="hof_value">#{number_with_delimiter(@best[:memory][:value])} kbytes </span>
21 - at submission
22 - = link_to("#" + @best[:memory][:sub_id].to_s, controller: 'graders' , action: 'submission', id:@best[:memory][:sub_id])
23 - %br/
24 -
25 - %b Shortest Code:
26 - by #{link_to @best[:length][:user], controller:'users', action:'profile', id:@best[:length][:user_id]}
27 - using <span class="hof_language">#{@best[:length][:lang]}</span>
28 - with <span class="hof_value">#{@best[:length][:value]} bytes</span>
29 - at submission
30 - = link_to("#" + @best[:length][:sub_id].to_s, controller: 'graders' , action: 'submission', id: @best[:length][:sub_id])
31 - %br/
32 -
33 - %b First solver:
34 - #{link_to @best[:first][:user], controller:'users', action:'profile', id:@best[:first][:user_id]} is the first solver
35 - using <span class="hof_language">#{@best[:first][:lang]}</span>
36 - on <span class="hof_value">#{@best[:first][:value]}</span>
37 - at submission
38 - = link_to("#" + @best[:first][:sub_id].to_s, controller: 'graders' , action: 'submission', id: @best[:first][:sub_id])
39 - %br/
40 -
41 -
42 - %p
43 - This counts only for submission with 100% score <br/>
44 - Right now, java is excluded from memory usage competition. (Because it always uses 2GB memory...)
45 -
46 97 %h2 By language
47 98
48 99 %table.info
49 100 %thead
50 101 %tr.info-head
51 102 %th Language
52 103 %th Best runtime (ms)
53 104 %th Best memory (kbytes)
54 105 %th Shortest Code (bytes)
55 106 %th First solver
56 107 %tbody
57 108 - @by_lang.each do |lang,value|
58 109 %tr{class: cycle('info-even','info-odd')}
59 110 %td= lang
60 111 %td
61 112 = link_to value[:runtime][:user], controller: 'users', action: 'profile', id: value[:runtime][:user_id]
62 113 = "(#{(value[:runtime][:value] * 1000).to_i} @"
63 114 = "#{link_to("#" + value[:runtime][:sub_id].to_s, controller: 'graders' , action: 'submission', id: value[:runtime][:sub_id])} )".html_safe
64 115 %td
65 116 = link_to value[:memory][:user], controller: 'users', action: 'profile', id: value[:memory][:user_id]
66 117 = "(#{number_with_delimiter(value[:memory][:value])} @"
67 118 = "#{link_to("#" + value[:memory][:sub_id].to_s, controller: 'graders' , action: 'submission', id: value[:memory][:sub_id])} )".html_safe
68 119 %td
69 120 = link_to value[:length][:user], controller: 'users', action: 'profile', id: value[:length][:user_id]
70 121 = "(#{value[:length][:value]} @"
71 122 = "#{link_to("#" + value[:length][:sub_id].to_s, controller: 'graders' , action: 'submission', id: value[:length][:sub_id])} )".html_safe
72 123 %td
73 124 - if value[:first][:user] != '(NULL)' #TODO: i know... this is wrong...
74 125 = link_to value[:first][:user], controller: 'users', action: 'profile', id: value[:first][:user_id]
75 126 = "(#{value[:first][:value]} @"
76 127 = "#{link_to("#" + value[:first][:sub_id].to_s, controller: 'graders' , action: 'submission', id: value[:first][:sub_id])} )".html_safe
77 128
78 - - else
79 - %h3 No submissions
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@@ -1,22 +1,23
1 1
2 2 /- if params[:id]
3 3 / %h1 Tasks Hall of Fame
4 4 / = link_to('[back to All-Time Hall of Fame]', action: 'problem_hof', id: nil )
5 5 /- else
6 6 / %h1 All-Time Hall of Fame
7 7
8 8
9 - %h1 Tasks Hall of Fame
9 + %h1 Hall of Fame
10 10 .task-menu
11 11 Tasks
12 12 %br/
13 13 - @problems.each do |prob|
14 14 = link_to( "[#{prob.name}]", {id: prob.id})
15 15
16 16 - unless params[:id]
17 17 /=render partial: 'all_time_hof'
18 18 Please select a problem.
19 19 - else
20 20 =render partial: 'task_hof'
21 + %h2 Submission History
22 + =render partial: 'application/bar_graph', locals: { histogram: @histogram }
21 23
22 -
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@@ -1,52 +1,66
1 1 - content_for :header do
2 2 = javascript_include_tag 'local_jquery'
3 3
4 - %script{:type=>"text/javascript"}
4 + :javascript
5 5 $(function () {
6 - $('#submission_table').tablesorter({widgets: ['zebra']});
6 + $('#submission_table').tablesorter({widgets: ['zebra']});
7 7 });
8 8
9 9 :css
10 10 .fix-width {
11 11 font-family: Droid Sans Mono,Consolas, monospace, mono, Courier New, Courier;
12 12 }
13 13
14 - %h1= @user.full_name + ' Profile'
14 + %h1= @user.full_name
15 15
16 - %h2 Basic info
17 16 <b>Login:</b> #{@user.login} <br/>
18 17 <b>Full name:</b> #{@user.full_name} <br />
19 18
20 19
21 20 %h2 Problem Stat
21 + %table.info
22 + %thead
23 + %tr.info-head
24 + %th Stat
25 + %th Value
26 + %tbody
27 + %tr{class: cycle('info-even','info-odd')}
28 + %td.info_param Submissions
29 + %td= @summary[:count]
30 + %tr{class: cycle('info-even','info-odd')}
31 + %td.info_param Solved/Attempted Problem
32 + %td #{@summary[:solve]}/#{@summary[:attempt]} (#{(@summary[:solve]*100.0/@summary[:attempt]).round(1)}%)
22 33
23 - %h2 Submissions
34 + %h2 Submission History
35 +
36 + =render partial: 'application/bar_graph', locals: {histogram: @histogram, param: {bar_width: 7}}
37 +
24 38
25 39 %table.tablesorter-cafe#submission_table
26 40 %thead
27 41 %tr
28 42 %th ID
29 43 %th Problem code
30 44 %th Problem full name
31 45 %th Language
32 46 %th Submitted at
33 47 %th Result
34 48 %th Score
35 49 - if session[:admin]
36 50 %th IP
37 51 %tbody
38 52 - @submission.each do |s|
39 53 - next unless s.problem
40 54 %tr
41 55 %td= link_to "#{s.id}", controller: "graders", action: "submission", id: s.id
42 - %td= s.problem.name
56 + %td= link_to s.problem.name, controller: "problems", action: "stat", id: s.problem
43 57 %td= s.problem.full_name
44 58 %td= s.language.pretty_name
45 59 %td #{s.submitted_at.strftime('%Y-%m-%d %H:%M')} (#{time_ago_in_words(s.submitted_at)} ago)
46 60 %td.fix-width= s.grader_comment
47 61 %td= (s.points*100)/s.problem.full_score
48 62 - if session[:admin]
49 63 %td= s.ip_address
50 64
51 65
52 66
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@@ -1,58 +1,58
1 1 module GraderScript
2 2
3 3 def self.grader_control_enabled?
4 4 if defined? GRADER_ROOT_DIR
5 5 GRADER_ROOT_DIR != ''
6 6 else
7 7 false
8 8 end
9 9 end
10 10
11 11 def self.raw_dir
12 12 File.join GRADER_ROOT_DIR, "raw"
13 13 end
14 14
15 15 def self.call_grader(params)
16 16 if GraderScript.grader_control_enabled?
17 17 cmd = File.join(GRADER_ROOT_DIR, "scripts/grader") + " " + params
18 18 system(cmd)
19 19 end
20 20 end
21 21
22 22 def self.stop_grader(pid)
23 23 GraderScript.call_grader "stop #{pid}"
24 24 end
25 25
26 26 def self.stop_graders(pids)
27 27 pid_str = (pids.map { |process| process.pid.to_s }).join ' '
28 28 GraderScript.call_grader "stop #{pid_str}"
29 29 end
30 30
31 31 def self.start_grader(env)
32 - GraderScript.call_grader "#{env} queue &"
33 - GraderScript.call_grader "#{env} test_request &"
32 + GraderScript.call_grader "#{env} queue --err-log &"
33 + GraderScript.call_grader "#{env} test_request -err-log &"
34 34 end
35 35
36 36 def self.call_import_problem(problem_name,
37 37 problem_dir,
38 38 time_limit=1,
39 39 memory_limit=32,
40 40 checker_name='text')
41 41 if GraderScript.grader_control_enabled?
42 42 cur_dir = `pwd`.chomp
43 43 Dir.chdir(GRADER_ROOT_DIR)
44 44
45 45 script_name = File.join(GRADER_ROOT_DIR, "scripts/import_problem")
46 46 cmd = "#{script_name} #{problem_name} #{problem_dir} #{checker_name}" +
47 47 " -t #{time_limit} -m #{memory_limit}"
48 48
49 49 output = `#{cmd}`
50 50
51 51 Dir.chdir(cur_dir)
52 52
53 53 return "import CMD: #{cmd}\n" + output
54 54 end
55 55 return ''
56 56 end
57 57
58 58 end
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