|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
namespace Innmind\ProvisionerBundle; |
|
4
|
|
|
|
|
5
|
|
|
use Innmind\ProvisionerBundle\Server\ServerInterface; |
|
6
|
|
|
use Innmind\ProvisionerBundle\Event\ProvisionEvents; |
|
7
|
|
|
use Innmind\ProvisionerBundle\Event\ProvisionRequirementEvent; |
|
8
|
|
|
use Innmind\ProvisionerBundle\Event\ProvisionEvent; |
|
9
|
|
|
use Innmind\ProvisionerBundle\Event\ProvisionAlertEvent; |
|
10
|
|
|
use Symfony\Component\EventDispatcher\EventDispatcherInterface; |
|
11
|
|
|
use Symfony\Component\Filesystem\LockHandler; |
|
12
|
|
|
use Symfony\Component\Console\Input\InputInterface; |
|
13
|
|
|
use Psr\Log\LoggerInterface; |
|
14
|
|
|
|
|
15
|
|
|
/** |
|
16
|
|
|
* Class acting how many processes can be launched on the server |
|
17
|
|
|
*/ |
|
18
|
|
|
class DecisionManager |
|
19
|
|
|
{ |
|
20
|
|
|
protected $server; |
|
21
|
|
|
protected $cpuThreshold; |
|
22
|
|
|
protected $processStatus; |
|
23
|
|
|
protected $dispatcher; |
|
24
|
|
|
protected $logger; |
|
25
|
|
|
|
|
26
|
|
|
/** |
|
27
|
|
|
* Set the server helper |
|
28
|
|
|
* |
|
29
|
|
|
* @param ServerInterface $server |
|
30
|
|
|
*/ |
|
31
|
3 |
|
public function setServer(ServerInterface $server) |
|
32
|
|
|
{ |
|
33
|
3 |
|
$this->server = $server; |
|
34
|
3 |
|
} |
|
35
|
|
|
|
|
36
|
|
|
/** |
|
37
|
|
|
* Set the CPU top threshold |
|
38
|
|
|
* |
|
39
|
|
|
* @param float $threshold |
|
40
|
|
|
*/ |
|
41
|
3 |
|
public function setCpuThreshold($threshold) |
|
42
|
|
|
{ |
|
43
|
3 |
|
$this->cpuThreshold = (float) $threshold; |
|
44
|
3 |
|
} |
|
45
|
|
|
|
|
46
|
|
|
/** |
|
47
|
|
|
* Set the process status handler |
|
48
|
|
|
* |
|
49
|
|
|
* @param ProcessStatusHandler $handler |
|
50
|
|
|
*/ |
|
51
|
3 |
|
public function setProcessStatusHandler(ProcessStatusHandler $handler) |
|
52
|
|
|
{ |
|
53
|
3 |
|
$this->processStatus = $handler; |
|
54
|
3 |
|
} |
|
55
|
|
|
|
|
56
|
|
|
/** |
|
57
|
|
|
* Set the event dispatcher |
|
58
|
|
|
* |
|
59
|
|
|
* @param EventDispatcherInterface $dispatcher |
|
60
|
|
|
*/ |
|
61
|
|
|
public function setDispatcher(EventDispatcherInterface $dispatcher) |
|
62
|
|
|
{ |
|
63
|
|
|
$this->dispatcher = $dispatcher; |
|
64
|
|
|
} |
|
65
|
|
|
|
|
66
|
|
|
/** |
|
67
|
|
|
* Set the logger |
|
68
|
|
|
* |
|
69
|
|
|
* @param LoggerInterface $logger |
|
70
|
|
|
*/ |
|
71
|
|
|
public function setLogger(LoggerInterface $logger) |
|
72
|
|
|
{ |
|
73
|
|
|
$this->logger = $logger; |
|
74
|
|
|
} |
|
75
|
|
|
|
|
76
|
|
|
/** |
|
77
|
|
|
* Return the number of processes that can be launched on the server |
|
78
|
|
|
* |
|
79
|
|
|
* @param string $command Command name to analyze |
|
80
|
|
|
* |
|
81
|
|
|
* @return int |
|
82
|
|
|
*/ |
|
83
|
3 |
|
public function getAllowedProcesses($command) |
|
84
|
|
|
{ |
|
85
|
3 |
|
$cpuUsage = $this->server->getCpuUsage(); |
|
86
|
|
|
|
|
87
|
3 |
|
$averageProcessUsage = $this->processStatus->getProcessUsage($command); |
|
88
|
3 |
|
$averageProcessNumber = $this->processStatus->getProcessCount($command); |
|
89
|
|
|
|
|
90
|
3 |
|
if ($cpuUsage >= $this->cpuThreshold) { |
|
91
|
|
|
return 0; |
|
92
|
|
|
} |
|
93
|
|
|
|
|
94
|
3 |
|
if ((int) $averageProcessNumber === 0) { |
|
95
|
|
|
return 1; |
|
96
|
|
|
} |
|
97
|
|
|
|
|
98
|
3 |
|
$availableCpu = $this->cpuThreshold - $cpuUsage; |
|
99
|
3 |
|
$processUsage = $averageProcessUsage / $averageProcessNumber; |
|
100
|
|
|
|
|
101
|
3 |
|
return (int) floor($availableCpu / $processUsage); |
|
102
|
|
|
} |
|
103
|
|
|
|
|
104
|
|
|
/** |
|
105
|
|
|
* Instruct the bundle to run all the process it can |
|
106
|
|
|
* and dispatch alerts if necessary |
|
107
|
|
|
* |
|
108
|
|
|
* @param string $name Symfony command name being run |
|
109
|
|
|
* @param InputInterface $input Command input arguments |
|
110
|
|
|
*/ |
|
111
|
|
|
public function provision($name, InputInterface $input) |
|
112
|
|
|
{ |
|
113
|
|
|
$lockHandler = new LockHandler(sprintf( |
|
114
|
|
|
'provision.%s.lock', |
|
115
|
|
|
preg_replace('/[:\/]/', '-', $name) |
|
116
|
|
|
)); |
|
117
|
|
|
|
|
118
|
|
|
if (!$lockHandler->lock()) { |
|
119
|
|
|
return; |
|
120
|
|
|
} |
|
121
|
|
|
|
|
122
|
|
|
if ($this->logger) { |
|
123
|
|
|
$this->logger->info( |
|
124
|
|
|
'Starting provisioning', |
|
125
|
|
|
['command' => $name, 'input' => (string) $input] |
|
126
|
|
|
); |
|
127
|
|
|
} |
|
128
|
|
|
|
|
129
|
|
|
$event = new ProvisionRequirementEvent($name, $input); |
|
130
|
|
|
$this->dispatcher->dispatch( |
|
131
|
|
|
ProvisionEvents::COMPUTE_REQUIREMENTS, |
|
132
|
|
|
$event |
|
133
|
|
|
); |
|
134
|
|
|
|
|
135
|
|
|
$required = $event->getRequiredProcesses(); |
|
136
|
|
|
|
|
137
|
|
|
$command = sprintf( |
|
138
|
|
|
'console %s', |
|
139
|
|
|
(string) $input |
|
140
|
|
|
); |
|
141
|
|
|
|
|
142
|
|
|
$allowed = $this->getAllowedProcesses($command); |
|
143
|
|
|
|
|
144
|
|
|
if ($required > $allowed) { |
|
145
|
|
|
$toRun = $allowed; |
|
146
|
|
|
$leftOver = $required - $allowed; |
|
147
|
|
|
} else { |
|
148
|
|
|
$toRun = $required; |
|
149
|
|
|
$leftOver = 0; |
|
150
|
|
|
} |
|
151
|
|
|
|
|
152
|
|
|
$this->dispatcher->dispatch( |
|
153
|
|
|
ProvisionEvents::PROVISION, |
|
154
|
|
|
new ProvisionEvent($name, $input, $toRun) |
|
155
|
|
|
); |
|
156
|
|
|
$this->dispatcher->dispatch( |
|
157
|
|
|
ProvisionEvents::ALERT, |
|
158
|
|
|
new ProvisionAlertEvent($name, $input, $leftOver) |
|
159
|
|
|
); |
|
160
|
|
|
|
|
161
|
|
|
if ($this->logger) { |
|
162
|
|
|
$this->logger->info( |
|
163
|
|
|
'Finished provisioning', |
|
164
|
|
|
[ |
|
165
|
|
|
'command' => $name, |
|
166
|
|
|
'input' => (string) $input, |
|
167
|
|
|
'processes_spawned' => $toRun, |
|
168
|
|
|
'left_overs' => $leftOver, |
|
169
|
|
|
] |
|
170
|
|
|
); |
|
171
|
|
|
} |
|
172
|
|
|
|
|
173
|
|
|
$lockHandler->release(); |
|
174
|
|
|
} |
|
175
|
|
|
} |
|
176
|
|
|
|
Innmind /
ProvisionerBundle
