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
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
|
#!/usr/bin/node
/* jshint esnext:true */
'use strict';
var amqp = require("amqplib"),
Seq = require("sequelize"),
sleep = require("sleep-promise");
var RABBITMQ_URI = process.env.RABBITMQ_URI || "amqp://localhost",
DATABASE_URI = process.env.DATABASE_URI || "sqlite:///db.sqlite",
BATCHSIZE = process.env.PROCESSOR_BATCH || 50 * (1 + 5), // matches + players + teams
IDLE_TIMEOUT = process.env.PROCESSOR_IDLETIMEOUT || 500; // ms
(async () => {
let seq, model, rabbit, ch;
while (true) {
try {
seq = new Seq(DATABASE_URI, { logging: () => {} }),
rabbit = await amqp.connect(RABBITMQ_URI),
ch = await rabbit.createChannel();
await ch.assertQueue("compile", {durable: true});
await ch.assertQueue("analyze", {durable: true});
break;
} catch (err) {
console.error(err);
await sleep(5000);
}
}
model = require("../orm/model")(seq, Seq);
let queue = [],
timer = undefined;
await seq.sync();
// as long as the queue is filled, msg are not ACKed
// server sends as long as there are less than `prefetch` unACKed
await ch.prefetch(BATCHSIZE);
ch.consume("compile", async (msg) => {
queue.push(msg);
// fill queue until batchsize or idle
if (timer === undefined)
timer = setTimeout(process, IDLE_TIMEOUT)
if (queue.length == BATCHSIZE)
await process();
}, { noAck: false });
async function process() {
console.log("compiling batch", queue.length);
// clean up to allow processor to accept while we wait for db
let msgs = queue.slice();
queue = [];
clearTimeout(timer);
timer = undefined;
// aggregate & bulk insert
let player_ext_records = [],
participant_ext_records = [],
player_updates = []; // [[what, where]]
// processor sends to queue with a custom "type" so compiler can filter
// m.content: player.api_id
let players = msgs.filter((m) => m.properties.type == "player").map(
(m) => JSON.parse(m.content)).filter((p) => p != undefined),
participants = msgs.filter((m) => m.properties.type == "participant").map(
(m) => JSON.parse(m.content)).filter((p) => p != undefined);
// collect information and populate _record arrays
await Promise.all([
// collect player information
Promise.all(players.map(async (player) => {
let player_api_id = player.api_id,
player_ext = {};
// set last_match_created_date
let record = await model.Participant.findOne({
where: {
player_api_id: player_api_id
},
attributes: [ [seq.col("roster.match.created_at"), "last_match_created_date"] ],
include: [ {
model: model.Roster,
attributes: [],
include: [ {
model: model.Match,
attributes: []
} ]
} ],
order: [
[seq.col("last_match_created_date"), "DESC"]
]
});
if (record != null)
// do later in the transaction
player_updates.push([
{ last_match_created_date: record.get("last_match_created_date") },
{ where: { api_id: player_api_id } }
]);
// calculate "extended" player_ext fields like wins per patch
player_ext.player_api_id = player_api_id;
//player_ext.series = ""
// TODO parallelize
// TODO maybe this can be done in fewer/combined/subqueries
let count_matches_where = async (where) => {
let record = await model.Participant.findOne({
where: where,
attributes: [[seq.fn("COUNT", "$roster.match$"), "count"]],
include: [ {
model: model.Roster,
attributes: [],
include: [ {
model: model.Match,
attributes: []
} ]
} ]
})
if (record == null) return 0;
return record.get("count");
};
// TODO run in parallel
player_ext.played = await model.Participant.count({
where: {
player_api_id: player_api_id
}
});
player_ext.wins = await model.Participant.count({
where: {
player_api_id: player_api_id,
winner: true
}
});
player_ext.played_casual = await count_matches_where({
player_api_id: player_api_id,
"$roster.match.game_mode$": "casual"
});
player_ext.played_ranked = await count_matches_where({
player_api_id: player_api_id,
"$roster.match.game_mode$": "ranked"
});
player_ext.wins_casual = await count_matches_where({
player_api_id: player_api_id,
winner: true,
"$roster.match.game_mode$": "casual"
});
player_ext.wins_ranked = await count_matches_where({
player_api_id: player_api_id,
winner: true,
"$roster.match.game_mode$": "ranked"
});
player_ext_records.push(player_ext);
})),
// calculate participant fields
Promise.all(participants.map(async (api_participant) => {
let participant = await model.Participant.findOne({
where: {
api_id: api_participant.api_id
},
attributes: ["api_id", "kills", "assists", "deaths", seq.col("roster.hero_kills")],
include: [
model.Roster
]
}),
participant_ext = {};
participant_ext.participant_api_id = participant.api_id;
participant_ext.series = "" // TODO rm
if (participant.roster.hero_kills == 0)
participant_ext.kills_participation = 0;
else
participant_ext.kills_participation = (participant.kills + participant.assists) / participant.roster.hero_kills;
if (participant.deaths == 0)
participant_ext.kda = 0;
else
participant_ext.kda = (participant.kills + participant.assists) / participant.deaths;
participant_ext_records.push(participant_ext);
}))
]);
// load records into db
try {
console.log("inserting batch into db");
await seq.transaction({ autocommit: false }, async (transaction) => {
await Promise.all([
model.ParticipantExt.bulkCreate(participant_ext_records, {
updateOnDuplicate: [], // all
transaction: transaction
}),
model.PlayerExt.bulkCreate(player_ext_records, {
updateOnDuplicate: [], // all
transaction: transaction
}),
player_updates.map(async (pu) =>
await model.Player.update(pu[0], pu[1]))
]);
});
} catch (err) {
// this should only happen for deadlocks or non-data related issues
console.error(err);
await Promise.all(msgs.map((m) => ch.nack(m, true)) ); // requeue
return; // give up
}
console.log("acking batch");
await Promise.all(msgs.map((m) => ch.ack(m)) );
// notify analyzer
Promise.all(participant_ext_records.map(async (p) =>
await ch.sendToQueue("analyze", new Buffer(p.participant_api_id), {
persistent: true,
type: "participant"
})
));
// notify web
await Promise.all([
Promise.all(players.map(async (p) => await ch.publish("amq.topic", "player." + p.name,
new Buffer("stats_update")) )),
Promise.all(participant_ext_records.map(async (p) => await ch.publish("amq.topic",
"participant." + p.participant_api_id, new Buffer("stats_update")) ))
]);
}
})();
|
