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
|
#!/usr/bin/env perl
use Mojolicious::Lite;
use DateTime;
use DBI;
use 5.020;
use utf8;
our $VERSION = qx{git describe --dirty} || '0.00';
my $dbh = DBI->connect( "dbi:SQLite:dbname=cache/picomon.sqlite", q{}, q{} );
my @int_fields = (
qw(
load1 load5 load15 num_threads
mem_total mem_free mem_available mem_buffers mem_cached mem_shared
swap_total swap_free
uptime
)
);
my @text_fields = (
qw(
debian_version
df_raw
ip_raw
kernel_version
os
)
);
$dbh->do(
qq{
create table if not exists hostdata (
hostname text not null unique,
last_contact integer not null,
}
. join( q{, }, map { "$_ integer" } @int_fields ) . q{, }
. join( q{, }, map { "$_ text" } @text_fields ) . q{)}
);
sub update_db {
my %data = @_;
my @query_data;
my @fields = ( qw(hostname last_contact), @int_fields, @text_fields );
my @values = (q(?)) x @fields;
my $query_str = sprintf(
'insert or replace into hostdata (%s) values (%s)',
join( q{,}, @fields ),
join( q{,}, @values )
);
my $query = $dbh->prepare($query_str);
for my $field (@fields) {
if ( exists $data{$field} ) {
chomp( $data{$field} );
push( @query_data, $data{$field} );
}
else {
push( @query_data, undef );
}
}
$query->execute(@query_data);
}
app->defaults( layout => 'default' );
app->attr( dbh => sub { return $dbh } );
sub parse_df {
my ($df_raw) = @_;
my %ret;
for my $line ( split( /\n/, $df_raw ) ) {
my ( $fs, $size, $used, $available, $usepct, $mountpoint )
= split( /\s+/, $line );
$ret{$mountpoint} = {
filesystem => $fs,
size => $size,
used => $used,
available => $available,
use_percent => $usepct,
};
}
return \%ret;
}
get '/' => sub {
my ($self) = @_;
my $epoch = DateTime->now( time_zone => 'Europe/Berlin' )->epoch;
my @hostdata;
my @olddata;
my @curdata;
my $hostdata_raw = $dbh->selectall_arrayref(
qq{select * from hostdata order by last_contact desc});
my @fields = ( qw(hostname last_contact), @int_fields, @text_fields );
for my $host ( @{$hostdata_raw} ) {
my $hostref
= { map { ( $fields[$_], $host->[$_] ) } ( 0 .. $#fields ) };
$hostref->{disks} = parse_df( $hostref->{df_raw} );
delete $hostref->{df_raw};
if ( $hostref->{mem_available} and $hostref->{mem_total} ) {
$hostref->{mem_used_ratio}
= 1 - ( $hostref->{mem_available} / $hostref->{mem_total} );
}
elsif ( $hostref->{mem_total} and $hostref->{mem_free} ) {
$hostref->{mem_used_ratio}
= ( $hostref->{mem_total}
- $hostref->{mem_free}
- $hostref->{mem_buffers}
- $hostref->{mem_cached} ) / $hostref->{mem_total};
}
push( @hostdata, $hostref );
if ( $epoch - $hostref->{last_contact} < ( 31 * 60 ) ) {
push( @curdata, $hostref );
}
else {
push( @olddata, $hostref );
}
}
@curdata = sort { $a->{hostname} cmp $b->{hostname} } @curdata;
$self->render(
'main',
active_hosts => \@curdata,
hosts => \@hostdata,
old_hosts => \@olddata,
version => $VERSION,
);
};
post '/update' => sub {
my ($self) = @_;
my $param = $self->req->params->to_hash;
my $now = DateTime->now( time_zone => 'Europe/Berlin' );
my %data = (
hostname => $param->{hostname},
last_contact => $now->epoch,
);
if ( exists $param->{debian} ) {
$data{debian_version} = $param->{debian};
}
if ( exists $param->{uptime} ) {
$data{uptime} = int( ( split( qr{ }, $param->{uptime} ) )[0] );
}
if ( exists $param->{load} ) {
if ( $param->{load}
=~ m{ ^ (?<l1> \S+ ) \s (?<l5> \S+ ) \s (?<l15> \S+ ) \s \d+ / (?<nthr> \d+ ) }x
)
{
$data{load1} = $+{l1};
$data{load5} = $+{l5};
$data{load15} = $+{l15};
$data{num_threads} = $+{nthr};
}
}
if ( exists $param->{uname} ) {
my ( $os, $kv ) = split( qr{ }, $param->{uname} );
$data{os} = $os;
$data{kernel_version} = $kv;
}
if ( exists $param->{df} ) {
$data{df_raw} = $param->{df};
}
if ( exists $param->{ip} ) {
$data{ip_raw} = $param->{ip};
}
if ( exists $param->{meminfo} ) {
my %meminfo
= ( $param->{meminfo} =~ m{ ^ (\S+) : \s+ (\d+) \s kB $ }gmx );
$data{mem_total} = $meminfo{MemTotal};
$data{mem_free} = $meminfo{MemFree};
$data{mem_available} = $meminfo{MemAvailable};
$data{mem_buffers} = $meminfo{Buffers};
$data{mem_cached} = $meminfo{Cached};
$data{mem_shared} = $meminfo{Shmem};
$data{swap_total} = $meminfo{SwapTotal};
$data{swap_free} = $meminfo{SwapFree};
}
update_db(%data);
$self->render(
data => q{},
status => 204,
);
};
app->config(
hypnotoad => {
listen => [ $ENV{LISTEN} // 'http://*:8099' ],
pid_file => '/tmp/picomon.pid',
workers => 1,
},
);
$ENV{MOJO_MAX_MESSAGE_SIZE} = 1048576;
app->start;
|
