blob: 3c1959608e9abba3704222a93a47857764b97b2b (
plain) (
blame)
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
|
// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "simple_health_producer.h"
#include <vespa/defaults.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <unistd.h>
namespace {
struct DiskPing {
std::string path;
DiskPing()
: path(vespa::Defaults::underVespaHome("var/run/diskping."))
{
int pid = getpid();
while (pid > 0) {
char c = '0' + (pid % 10);
path.append(1, c);
pid /= 10;
}
}
bool failed() {
const char *fn = path.c_str();
::unlink(fn);
int fd = ::creat(fn, S_IRWXU);
if (fd < 0) {
return true;
}
int wr = ::write(fd, "foo\n", 4);
int cr = ::close(fd);
::unlink(fn);
return (wr != 4 || cr != 0);
}
};
bool diskFailed() {
static DiskPing disk;
return disk.failed();
}
}
namespace vespalib {
SimpleHealthProducer::SimpleHealthProducer()
: _lock(),
_health(true, "")
{
setOk();
}
SimpleHealthProducer::~SimpleHealthProducer() = default;
void
SimpleHealthProducer::setOk()
{
std::lock_guard guard(_lock);
_health = Health(true, "All OK");
}
void
SimpleHealthProducer::setFailed(const vespalib::string &msg)
{
std::lock_guard guard(_lock);
_health = Health(false, msg);
}
HealthProducer::Health
SimpleHealthProducer::getHealth() const
{
std::lock_guard guard(_lock);
if (_health.ok && diskFailed()) {
return Health(false, "disk ping failed");
}
return _health;
}
} // namespace vespalib
|
