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syslog_ng_exporter_test.go
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syslog_ng_exporter_test.go
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package main
import (
"fmt"
"net"
"testing"
"github.com/prometheus/client_golang/prometheus"
)
var (
statsLevel1 = `SourceName;SourceId;SourceInstance;State;Type;Number
destination;d_spol;;a;processed;0
src.internal;s_sys#2;;a;processed;4
src.internal;s_sys#2;;a;stamp;1556092662
center;;received;a;processed;4
src.unix-dgram;s_sys#0;/run/systemd/journal/syslog;a;processed;16
src.unix-dgram;s_sys#0;/run/systemd/journal/syslog;a;stamp;1556092680
destination;d_mesg;;a;processed;7
destination;d_mail;;a;processed;0
destination;d_auth;;a;processed;13
destination;d_mlal;;a;processed;0
center;;queued;a;processed;20
src.none;;;a;processed;0
src.none;;;a;stamp;0
destination;d_cron;;a;processed;0
global;payload_reallocs;;a;processed;0
global;sdata_updates;;a;processed;0
dst.file;d_mesg#0;/var/log/messages;a;dropped;0
dst.file;d_mesg#0;/var/log/messages;a;processed;7
dst.file;d_mesg#0;/var/log/messages;a;stored;0
src.file;s_sys#1;/dev/kmsg;a;processed;0
src.file;s_sys#1;/dev/kmsg;a;stamp;0
destination;d_boot;;a;processed;0
destination;d_kern;;a;processed;0
global;msg_clones;;a;processed;0
source;s_sys;;a;processed;4
dst.file;d_auth#0;/var/log/secure;a;dropped;0
dst.file;d_auth#0;/var/log/secure;a;processed;13
dst.file;d_auth#0;/var/log/secure;a;stored;0
.`
statsLevel2 = `SourceName;SourceId;SourceInstance;State;Type;Number
dst.file;d_mesg#0;/var/log/messages;a;dropped;0
dst.file;d_mesg#0;/var/log/messages;a;processed;610
dst.file;d_mesg#0;/var/log/messages;a;stored;0
destination;d_spol;;a;processed;0
src.internal;s_sys#2;;a;processed;72
src.internal;s_sys#2;;a;stamp;1556092051
center;;received;a;processed;72
src.unix-dgram;s_sys#0;/run/systemd/journal/syslog;a;processed;675
src.unix-dgram;s_sys#0;/run/systemd/journal/syslog;a;stamp;1556092606
destination;d_mesg;;a;processed;610
destination;d_mail;;a;processed;0
destination;d_auth;;a;processed;51
destination;d_mlal;;a;processed;0
center;;queued;a;processed;797
src.none;;;a;processed;0
src.none;;;a;stamp;0
destination;d_cron;;a;processed;111
global;payload_reallocs;;a;processed;88
global;sdata_updates;;a;processed;0
dst.file;d_kern#0;/var/log/kern;o;dropped;0
dst.file;d_kern#0;/var/log/kern;o;processed;25
dst.file;d_kern#0;/var/log/kern;o;stored;0
src.host;;l261767-vm;d;processed;772
src.host;;l261767-vm;d;stamp;1556092606
dst.file;d_cron#0;/var/log/cron;o;dropped;0
dst.file;d_cron#0;/var/log/cron;o;processed;111
dst.file;d_cron#0;/var/log/cron;o;stored;0
src.file;s_sys#1;/dev/kmsg;a;processed;25
src.file;s_sys#1;/dev/kmsg;a;stamp;1556091325
destination;d_boot;;a;processed;0
destination;d_kern;;a;processed;25
global;msg_clones;;a;processed;0
source;s_sys;;a;processed;72
dst.file;d_auth#0;/var/log/secure;a;dropped;0
dst.file;d_auth#0;/var/log/secure;a;processed;51
dst.file;d_auth#0;/var/log/secure;a;stored;0
filter;flow_default_flow01_match;;a;matched;83652
filter;flow_default_flow01_match;;a;not_matched;21478
parser;flow_default_flow01_filters_0;;a;discarded;0
.`
metricCountLevel1 = 11
metricCountLevel2 = 18
)
func acceptAndSend(sock net.Listener, response string) error {
conn, err := sock.Accept()
if err != nil {
return fmt.Errorf("accept failed: %v", err)
}
defer conn.Close()
_, err = conn.Write([]byte(response))
if err != nil {
return fmt.Errorf("write failed: %v", err)
}
return nil
}
func checkSyslogNGStats(t *testing.T, stats string, metricCount int) {
sock, err := net.Listen("unix", "@test")
if err != nil {
t.Errorf("Failed to listen on test socket: %v", err)
}
defer sock.Close()
go acceptAndSend(sock, stats)
e := NewExporter("@test")
ch := make(chan prometheus.Metric)
go func() {
defer close(ch)
e.collect(ch)
}()
for i := 1; i <= metricCount; i++ {
m := <-ch
if m == nil {
t.Error("Expected metric but got nil")
} else {
t.Logf("Got metric: %v", m)
}
}
extraMetrics := 0
for <-ch != nil {
extraMetrics++
}
if extraMetrics > 0 {
t.Errorf("expected end of stats, got %d extra metrics", extraMetrics)
}
}
func TestStatsLevel1(t *testing.T) {
checkSyslogNGStats(t, statsLevel1, metricCountLevel1)
}
func TestStatsLevel2(t *testing.T) {
checkSyslogNGStats(t, statsLevel2, metricCountLevel2)
}