|
1
|
|
|
<?php |
|
2
|
|
|
/** |
|
3
|
|
|
* Generic watcher (for service and kv-store) |
|
4
|
|
|
* User: moyo |
|
5
|
|
|
* Date: 2018/7/2 |
|
6
|
|
|
* Time: 11:49 AM |
|
7
|
|
|
*/ |
|
8
|
|
|
|
|
9
|
|
|
namespace Carno\Consul\Chips; |
|
10
|
|
|
|
|
11
|
|
|
use Carno\Channel\Exception\ChannelClosingException; |
|
12
|
|
|
use Carno\Consul\APIs\AbstractWatcher; |
|
13
|
|
|
use Carno\Consul\Contracts\Defaults; |
|
14
|
|
|
use function Carno\Coroutine\go; |
|
15
|
|
|
use function Carno\Coroutine\msleep; |
|
16
|
|
|
use Carno\HTTP\Exception\RequestCancelledException; |
|
17
|
|
|
use Carno\Promise\Promise; |
|
18
|
|
|
use Carno\Promise\Promised; |
|
19
|
|
|
use Closure; |
|
20
|
|
|
use Throwable; |
|
21
|
|
|
|
|
22
|
|
|
trait GWatcher |
|
23
|
|
|
{ |
|
24
|
|
|
/** |
|
25
|
|
|
* new watcher process |
|
26
|
|
|
* @param Promised $cc watch-canceller |
|
27
|
|
|
* @param Closure $ig instance-generator |
|
28
|
|
|
* @param Closure $do worker-do |
|
29
|
|
|
* @param string $em error-msg |
|
30
|
|
|
* @param array $ec error-context |
|
31
|
|
|
*/ |
|
32
|
|
|
protected function nwProcess(Promised $cc, Closure $ig, Closure $do, string $em, array $ec) : void |
|
33
|
|
|
{ |
|
34
|
|
|
go(static function () use ($cc, $ig, $do, $em, $ec) { |
|
35
|
|
|
/** |
|
36
|
|
|
* @var Promised $ex |
|
37
|
|
|
*/ |
|
38
|
|
|
|
|
39
|
|
|
$ex = null; |
|
40
|
|
|
|
|
41
|
|
|
$cc->then(function () use (&$ex) { |
|
42
|
|
|
$ex && $ex->pended() && $ex->resolve(); |
|
43
|
|
|
}); |
|
44
|
|
|
|
|
45
|
|
|
for (;;) { |
|
46
|
|
|
if (!isset($lister)) { |
|
47
|
|
|
$lister = $ig(); |
|
48
|
|
|
$lister instanceof AbstractWatcher && $lister->setCanceller($ex = Promise::deferred()); |
|
49
|
|
|
} |
|
50
|
|
|
|
|
51
|
|
|
try { |
|
52
|
|
|
yield $do($lister); |
|
53
|
|
|
} catch (ChannelClosingException | RequestCancelledException $e) { |
|
54
|
|
|
break; |
|
55
|
|
|
} catch (Throwable $e) { |
|
56
|
|
|
unset($lister); |
|
57
|
|
|
|
|
58
|
|
|
logger('consul')->warning( |
|
59
|
|
|
$em, |
|
60
|
|
|
array_merge($ec, ['error' => sprintf('%s::%s', get_class($e), $e->getMessage())]) |
|
61
|
|
|
); |
|
62
|
|
|
|
|
63
|
|
|
yield msleep(rand(Defaults::ERROR_RETRY_MIN, Defaults::ERROR_RETRY_MAX)); |
|
64
|
|
|
|
|
65
|
|
|
continue; |
|
66
|
|
|
} |
|
67
|
|
|
} |
|
68
|
|
|
}); |
|
69
|
|
|
} |
|
70
|
|
|
} |
|
71
|
|
|
|
carno-php /
consul
