traefik/metrics/influxdb_test.go

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package metrics
import (
"net/http"
"regexp"
"strconv"
"testing"
"time"
"github.com/containous/traefik/types"
"github.com/stvp/go-udp-testing"
)
func TestInfluxDB(t *testing.T) {
udp.SetAddr(":8089")
// This is needed to make sure that UDP Listener listens for data a bit longer, otherwise it will quit after a millisecond
udp.Timeout = 5 * time.Second
influxDBRegistry := RegisterInfluxDB(&types.InfluxDB{Address: ":8089", PushInterval: "1s"})
defer StopInfluxDB()
if !influxDBRegistry.IsEnabled() {
t.Fatalf("InfluxDB registry must be enabled")
}
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expectedBackend := []string{
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`(traefik\.backend\.requests\.total,backend=test,code=200,method=GET count=1) [\d]{19}`,
`(traefik\.backend\.requests\.total,backend=test,code=404,method=GET count=1) [\d]{19}`,
`(traefik\.backend\.request\.duration,backend=test,code=200 p50=10000,p90=10000,p95=10000,p99=10000) [\d]{19}`,
`(traefik\.backend\.retries\.total(?:,code=[\d]{3},method=GET)?,backend=test count=2) [\d]{19}`,
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`(traefik\.config\.reload\.total(?:[a-z=0-9A-Z,]+)? count=1) [\d]{19}`,
`(traefik\.config\.reload\.total\.failure(?:[a-z=0-9A-Z,]+)? count=1) [\d]{19}`,
`(traefik\.backend\.server\.up,backend=test(?:[a-z=0-9A-Z,]+)?,url=http://127.0.0.1 value=1) [\d]{19}`,
}
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msgBackend := udp.ReceiveString(t, func() {
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influxDBRegistry.BackendReqsCounter().With("backend", "test", "code", strconv.Itoa(http.StatusOK), "method", http.MethodGet).Add(1)
influxDBRegistry.BackendReqsCounter().With("backend", "test", "code", strconv.Itoa(http.StatusNotFound), "method", http.MethodGet).Add(1)
influxDBRegistry.BackendRetriesCounter().With("backend", "test").Add(1)
influxDBRegistry.BackendRetriesCounter().With("backend", "test").Add(1)
influxDBRegistry.BackendReqDurationHistogram().With("backend", "test", "code", strconv.Itoa(http.StatusOK)).Observe(10000)
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influxDBRegistry.ConfigReloadsCounter().Add(1)
influxDBRegistry.ConfigReloadsFailureCounter().Add(1)
influxDBRegistry.BackendServerUpGauge().With("backend", "test", "url", "http://127.0.0.1").Set(1)
})
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assertMessage(t, msgBackend, expectedBackend)
expectedEntrypoint := []string{
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`(traefik\.entrypoint\.requests\.total,entrypoint=test(?:[a-z=0-9A-Z,:/.]+)? count=1) [\d]{19}`,
`(traefik\.entrypoint\.request\.duration(?:,code=[\d]{3})?,entrypoint=test(?:[a-z=0-9A-Z,:/.]+)? p50=10000,p90=10000,p95=10000,p99=10000) [\d]{19}`,
`(traefik\.entrypoint\.connections\.open,entrypoint=test value=1) [\d]{19}`,
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}
msgEntrypoint := udp.ReceiveString(t, func() {
influxDBRegistry.EntrypointReqsCounter().With("entrypoint", "test").Add(1)
influxDBRegistry.EntrypointReqDurationHistogram().With("entrypoint", "test").Observe(10000)
influxDBRegistry.EntrypointOpenConnsGauge().With("entrypoint", "test").Set(1)
})
assertMessage(t, msgEntrypoint, expectedEntrypoint)
}
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func assertMessage(t *testing.T, msg string, patterns []string) {
t.Helper()
for _, pattern := range patterns {
re := regexp.MustCompile(pattern)
match := re.FindStringSubmatch(msg)
if len(match) != 2 {
t.Errorf("Got %q %v, want %q", msg, match, pattern)
}
}
}