Description:
added rspec test for grader_message git-svn-id: http://theory.cpe.ku.ac.th/grader/web/trunk@387 6386c4cd-e34a-4fa8-8920-d93eb39b512e
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[Not Reviewed]
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r184:47909a48a10e - - 4 files changed: 131 inserted, 7 deleted

@@ -0,0 +1,119
1 +
2 + require File.dirname(__FILE__) + '/../spec_helper'
3 +
4 + describe GraderMessage do
5 +
6 + def add_submission_with_id(id)
7 + submission = stub(Submission, :id => id)
8 + GraderMessage.create_grade_submission("exam",submission)
9 + end
10 +
11 + before(:each) do
12 + GraderMessage.destroy_all
13 + end
14 +
15 + it "should return nil when there is no messages to me" do
16 + GraderMessage.create_message(1,0)
17 + GraderMessage.get_message_for(2).should == nil
18 + end
19 +
20 + it "should return a messages directed to me" do
21 + GraderMessage.create_message(1,0)
22 + GraderMessage.get_message_for(2).should == nil
23 + end
24 +
25 + it "should return a messages directed to me, in order of creation" do
26 + msg1 = GraderMessage.create_message(1,0)
27 + msg2 = GraderMessage.create_message(2,2)
28 + msg3 = GraderMessage.create_message(1,2)
29 + GraderMessage.get_message_for(1).id.should == msg1.id
30 + GraderMessage.get_message_for(1).id.should == msg3.id
31 + end
32 +
33 + it "should not return a messages directed to me if the command is not on my list of accepting commands" do
34 + msg1 = GraderMessage.create_message(1,GraderMessage::GRADE_SUBMISSION)
35 + msg2 = GraderMessage.create_message(1,GraderMessage::STOP)
36 + GraderMessage.get_message_for(1,[GraderMessage::GRADE_TEST_REQUEST]).should == nil
37 + end
38 +
39 + it "should return a messages directed to me if the command is on my list of accepting commands" do
40 + msg1 = GraderMessage.create_message(1,0)
41 + msg2 = GraderMessage.create_message(1,2)
42 + msg3 = GraderMessage.create_message(2,2)
43 + GraderMessage.get_message_for(1,[2]).id.should == msg2.id
44 + GraderMessage.get_message_for(1,[2]).should == nil
45 + end
46 +
47 + it "should return a message directed to anyone when I'm requesting" do
48 + msg1 = GraderMessage.create_message(:any,0)
49 + GraderMessage.get_message_for(1).id.should == msg1.id
50 + end
51 +
52 + it "should return a messages directed to anyone only if the command is on my list of accepting commands" do
53 + msg1 = GraderMessage.create_message(:any,0)
54 + GraderMessage.get_message_for(1,[1]).should == nil
55 + msg2 = GraderMessage.create_message(:any,1)
56 + GraderMessage.get_message_for(1,[1]).id.should == msg2.id
57 + end
58 +
59 + it "should return messages directed to anyone to many graders in order of requests" do
60 + msg1 = GraderMessage.create_message(:any,0)
61 + msg2 = GraderMessage.create_message(:any,2)
62 + msg3 = GraderMessage.create_message(:any,2)
63 + GraderMessage.get_message_for(1).id.should == msg1.id
64 + GraderMessage.get_message_for(2).id.should == msg2.id
65 + GraderMessage.get_message_for(1).id.should == msg3.id
66 + end
67 +
68 + it "should return messages directed to anyone to graders accepting those commands in order of requests" do
69 + msg1 = GraderMessage.create_message(:any,0)
70 + msg2 = GraderMessage.create_message(:any,1)
71 + msg3 = GraderMessage.create_message(:any,2)
72 + msg4 = GraderMessage.create_message(:any,2)
73 + msg5 = GraderMessage.create_message(:any,3)
74 + GraderMessage.get_message_for(1).id.should == msg1.id
75 + GraderMessage.get_message_for(2,[2]).id.should == msg3.id
76 + GraderMessage.get_message_for(1,[3]).id.should == msg5.id
77 + GraderMessage.get_message_for(2).id.should == msg2.id
78 + GraderMessage.get_message_for(1).id.should == msg4.id
79 + end
80 +
81 + it "should get all messages dispatched when there are many concurrent processes" do
82 + n = 100
83 + msg = []
84 + n.times do |i|
85 + msg << GraderMessage.create_message(:any,i)
86 + end
87 +
88 + #puts "#{n} messages created"
89 +
90 + t = 10 # use 10 threads
91 + ths = []
92 + t.times do |i|
93 + fork do
94 + #puts "I'm the #{i+1}-th process."
95 + begin
96 + m = GraderMessage.get_message_for(i)
97 + #puts "#{i+1} got #{m.id}" if m
98 + sleep 0.1
99 + end while m!=nil
100 + #puts "The #{i+1}-th process terminated."
101 + exit 0
102 + end
103 + end
104 +
105 + t.times do
106 + Process.wait
107 + end
108 +
109 + # for some reason the connection is lost at this point.
110 + GraderMessage.connection.reconnect!
111 +
112 + # check that all messages have been processed
113 + GraderMessage.find(:all) do |msg|
114 + msg.taken_grader_process.should != nil
115 + end
116 +
117 + end
118 +
119 + end
@@ -1,24 +1,26
1 class GraderMessage < ActiveRecord::Base
1 class GraderMessage < ActiveRecord::Base
2
2
3 + belongs_to :taken_grader_process, :class_name => :grader_process
4 +
3 GRADE_SUBMISSION = 1
5 GRADE_SUBMISSION = 1
4 GRADE_TEST_REQUEST = 2
6 GRADE_TEST_REQUEST = 2
5 STOP = 3
7 STOP = 3
6
8
9 + RECIPIENT_ANY = -1
10 +
7 def self.create_message(recipient, command, options=nil, target_id=nil)
11 def self.create_message(recipient, command, options=nil, target_id=nil)
8 recipient_id = recipient
12 recipient_id = recipient
9 - if recipient == :all
13 + if recipient == :any
10 - recipient_id = -1
14 + recipient_id = GraderMessage::RECIPIENT_ANY
11 - elsif recipient == :any
12 - recipient_id = 0
13 end
15 end
14
16
15 GraderMessage.create(:grader_process_id => recipient_id,
17 GraderMessage.create(:grader_process_id => recipient_id,
16 :command => command,
18 :command => command,
17 :options => options,
19 :options => options,
18 :target_id => target_id,
20 :target_id => target_id,
19 :taken => false)
21 :taken => false)
20 end
22 end
21
23
22 def self.create_grade_submission(mode,submission)
24 def self.create_grade_submission(mode,submission)
23 GraderMessage.create_message(:any,
25 GraderMessage.create_message(:any,
24 GraderMessage::GRADE_SUBMISSION,
26 GraderMessage::GRADE_SUBMISSION,
@@ -33,38 +35,39
33 test_request.id)
35 test_request.id)
34 end
36 end
35
37
36 def self.create_stop(grader_process_id)
38 def self.create_stop(grader_process_id)
37 GraderMessage.create_message(grader_process_id,
39 GraderMessage.create_message(grader_process_id,
38 GraderMessage::STOP)
40 GraderMessage::STOP)
39 end
41 end
40
42
41 def self.get_message_for(recipient_id, accepting_commands=:all)
43 def self.get_message_for(recipient_id, accepting_commands=:all)
42 command_conditions =
44 command_conditions =
43 GraderMessage.build_command_conditions(accepting_commands)
45 GraderMessage.build_command_conditions(accepting_commands)
44 recp_conditions= "((`grader_process_id` = #{recipient_id.to_i})" +
46 recp_conditions= "((`grader_process_id` = #{recipient_id.to_i})" +
45 - " OR (`grader_process_id` = 0) OR (`grader_process_id` = -1))"
47 + " OR (`grader_process_id` = #{GraderMessage::RECIPIENT_ANY}))"
46
48
47 message = nil # need this to bind message in do-block for transaction
49 message = nil # need this to bind message in do-block for transaction
48 begin
50 begin
49 GraderMessage.transaction do
51 GraderMessage.transaction do
50 message = GraderMessage.find(:first,
52 message = GraderMessage.find(:first,
51 :order => "created_at",
53 :order => "created_at",
52 :conditions =>
54 :conditions =>
53 - "(`taken`=0)" +
55 + "(`taken` = 0)" +
54 - "AND (#{recp_conditions})" +
56 + " AND (#{recp_conditions})" +
55 " AND (#{command_conditions})",
57 " AND (#{command_conditions})",
56 :lock => true)
58 :lock => true)
57 if message!=nil
59 if message!=nil
58 message.taken = true
60 message.taken = true
61 + message.taken_grader_process_id = recipient_id
59 message.save!
62 message.save!
60 end
63 end
61 end
64 end
62
65
63 rescue
66 rescue
64 message = nil
67 message = nil
65
68
66 end
69 end
67
70
68 message
71 message
69 end
72 end
70
73
@@ -1,16 +1,17
1 class CreateGraderMessages < ActiveRecord::Migration
1 class CreateGraderMessages < ActiveRecord::Migration
2 def self.up
2 def self.up
3 create_table :grader_messages do |t|
3 create_table :grader_messages do |t|
4 t.integer :grader_process_id
4 t.integer :grader_process_id
5 t.integer :command
5 t.integer :command
6 t.string :options
6 t.string :options
7 t.integer :target_id
7 t.integer :target_id
8 t.boolean :taken
8 t.boolean :taken
9 + t.integer :taken_grader_process_id
9 t.timestamps
10 t.timestamps
10 end
11 end
11 end
12 end
12
13
13 def self.down
14 def self.down
14 drop_table :grader_messages
15 drop_table :grader_messages
15 end
16 end
16 end
17 end
@@ -39,24 +39,25
39 t.text "body"
39 t.text "body"
40 t.boolean "markdowned"
40 t.boolean "markdowned"
41 t.datetime "created_at"
41 t.datetime "created_at"
42 t.datetime "updated_at"
42 t.datetime "updated_at"
43 end
43 end
44
44
45 create_table "grader_messages", :force => true do |t|
45 create_table "grader_messages", :force => true do |t|
46 t.integer "grader_process_id"
46 t.integer "grader_process_id"
47 t.integer "command"
47 t.integer "command"
48 t.string "options"
48 t.string "options"
49 t.integer "target_id"
49 t.integer "target_id"
50 t.boolean "taken"
50 t.boolean "taken"
51 + t.integer "taken_grader_process_id"
51 t.datetime "created_at"
52 t.datetime "created_at"
52 t.datetime "updated_at"
53 t.datetime "updated_at"
53 end
54 end
54
55
55 create_table "grader_processes", :force => true do |t|
56 create_table "grader_processes", :force => true do |t|
56 t.string "host", :limit => 20
57 t.string "host", :limit => 20
57 t.integer "pid"
58 t.integer "pid"
58 t.string "mode"
59 t.string "mode"
59 t.boolean "active"
60 t.boolean "active"
60 t.datetime "created_at"
61 t.datetime "created_at"
61 t.datetime "updated_at"
62 t.datetime "updated_at"
62 t.integer "task_id"
63 t.integer "task_id"
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