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")
}
expected := []string{
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`(traefik\.requests\.total,code=200,method=GET,service=test count=1) [\d]{19}`,
`(traefik\.requests\.total,code=404,method=GET,service=test count=1) [\d]{19}`,
`(traefik\.request\.duration,code=200,method=GET,service=test p50=10000,p90=10000,p95=10000,p99=10000) [\d]{19}`,
`(traefik\.backend\.retries\.total(?:,code=[\d]{3},method=GET)?,service=test count=2) [\d]{19}`,
}
msg := udp.ReceiveString(t, func() {
influxDBRegistry.BackendReqsCounter().With("service", "test", "code", strconv.Itoa(http.StatusOK), "method", http.MethodGet).Add(1)
influxDBRegistry.BackendReqsCounter().With("service", "test", "code", strconv.Itoa(http.StatusNotFound), "method", http.MethodGet).Add(1)
influxDBRegistry.BackendRetriesCounter().With("service", "test").Add(1)
influxDBRegistry.BackendRetriesCounter().With("service", "test").Add(1)
influxDBRegistry.BackendReqDurationHistogram().With("service", "test", "code", strconv.Itoa(http.StatusOK)).Observe(10000)
})
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assertMessage(t, msg, expected)
}
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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)
}
}
}