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Initial smoke test. #223

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merged 1 commit into from
May 25, 2021
Merged

Initial smoke test. #223

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2 changes: 1 addition & 1 deletion go.mod
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Original file line number Diff line number Diff line change
Expand Up @@ -15,7 +15,7 @@ require (
github.com/pkg/errors v0.9.1
github.com/pkg/profile v1.2.1 // indirect
github.com/prometheus/client_golang v1.10.0
github.com/prometheus/common v0.24.0
github.com/prometheus/common v0.25.0
github.com/prometheus/procfs v0.6.0 // indirect
github.com/prometheus/promu v0.12.0 // indirect
github.com/rcrowley/go-metrics v0.0.0-20201227073835-cf1acfcdf475
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2 changes: 2 additions & 0 deletions go.sum
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Original file line number Diff line number Diff line change
Expand Up @@ -382,6 +382,8 @@ github.com/prometheus/common v0.20.0 h1:pfeDeUdQcIxOMutNjCejsEFp7qeP+/iltHSSmLpE
github.com/prometheus/common v0.20.0/go.mod h1:U+gB1OBLb1lF3O42bTCL+FK18tX9Oar16Clt/msog/s=
github.com/prometheus/common v0.24.0 h1:aIycr3wRFxPUq8XlLQlGQ9aNXV3dFi5y62pe/SB262k=
github.com/prometheus/common v0.24.0/go.mod h1:H6QK/N6XVT42whUeIdI3dp36w49c+/iMDk7UAI2qm7Q=
github.com/prometheus/common v0.25.0 h1:IjJYZJCI8HZYtqA3xYwGyDzSCy1r4CA2GRh+4vdOmtE=
github.com/prometheus/common v0.25.0/go.mod h1:H6QK/N6XVT42whUeIdI3dp36w49c+/iMDk7UAI2qm7Q=
github.com/prometheus/procfs v0.0.0-20181005140218-185b4288413d h1:GoAlyOgbOEIFdaDqxJVlbOQ1DtGmZWs/Qau0hIlk+WQ=
github.com/prometheus/procfs v0.0.0-20181005140218-185b4288413d/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk=
github.com/prometheus/procfs v0.0.0-20190117184657-bf6a532e95b1/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk=
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24 changes: 18 additions & 6 deletions kafka_exporter.go
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Original file line number Diff line number Diff line change
Expand Up @@ -547,6 +547,18 @@ func main() {
}
}

setup(*listenAddress, *metricsPath, *topicFilter, *groupFilter, *logSarama, opts, labels)
}

func setup(
listenAddress string,
metricsPath string,
topicFilter string,
groupFilter string,
logSarama bool,
opts kafkaOpts,
labels map[string]string,
) {
clusterBrokers = prometheus.NewDesc(
prometheus.BuildFQName(namespace, "", "brokers"),
"Number of Brokers in the Kafka Cluster.",
Expand Down Expand Up @@ -634,24 +646,24 @@ func main() {
[]string{"consumergroup"}, labels,
)

if *logSarama {
if logSarama {
sarama.Logger = log.New(os.Stdout, "[sarama] ", log.LstdFlags)
}

exporter, err := NewExporter(opts, *topicFilter, *groupFilter)
exporter, err := NewExporter(opts, topicFilter, groupFilter)
if err != nil {
plog.Fatalln(err)
}
defer exporter.client.Close()
prometheus.MustRegister(exporter)

http.Handle(*metricsPath, promhttp.Handler())
http.Handle(metricsPath, promhttp.Handler())
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
w.Write([]byte(`<html>
<head><title>Kafka Exporter</title></head>
<body>
<h1>Kafka Exporter</h1>
<p><a href='` + *metricsPath + `'>Metrics</a></p>
<p><a href='` + metricsPath + `'>Metrics</a></p>
</body>
</html>`))
})
Expand All @@ -660,6 +672,6 @@ func main() {
w.Write([]byte("ok"))
})

plog.Infoln("Listening on", *listenAddress)
plog.Fatal(http.ListenAndServe(*listenAddress, nil))
plog.Infoln("Listening on", listenAddress)
plog.Fatal(http.ListenAndServe(listenAddress, nil))
}
72 changes: 72 additions & 0 deletions simple_test.go
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Original file line number Diff line number Diff line change
@@ -0,0 +1,72 @@
package main

import (
"errors"
"github.com/Shopify/sarama"
"io/ioutil"
"log"
"net/http"
"testing"
"time"
)

var bootstrap_servers = []string{"localhost:9092"}

func TestSmoke(t *testing.T) {
log.Print("testing " + t.Name())

if !assumeKafka(t) {
t.Skip("Kafka is not running ... skipping the test")
return
}

go runServer()

execute(func(resp *http.Response) {
log.Println(resp.Status)

defer resp.Body.Close()
bytes, err := ioutil.ReadAll(resp.Body)
if err != nil {
log.Fatalln(err)
} else {
log.Println(string(bytes))
}
})
}

func assumeKafka(t *testing.T) bool {
client, err := sarama.NewClient(bootstrap_servers, nil)
if err != nil {
return false
}
defer client.Close()
_, err = client.Topics()
if err != nil {
return false
}
return true
}

func execute(handler func(response *http.Response)) {
var e = errors.New("dummy")
for e != nil {
resp, err := http.Get("http://localhost:9304/metrics")
if err != nil {
time.Sleep(time.Millisecond * 100)
}
e = err
if resp != nil {
handler(resp)
}
}
}

func runServer() {
opts := kafkaOpts{}
opts.uri = bootstrap_servers
opts.uriZookeeper = []string{"localhost:2181"}
opts.kafkaVersion = sarama.V1_0_0_0.String()
opts.metadataRefreshInterval = "30s"
setup("localhost:9304", "/metrics", ".*", ".*", false, opts, nil)
}
8 changes: 8 additions & 0 deletions vendor/github.com/prometheus/common/model/labels.go
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2 changes: 1 addition & 1 deletion vendor/modules.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -105,7 +105,7 @@ github.com/prometheus/client_golang/prometheus/internal
github.com/prometheus/client_golang/prometheus/promhttp
# github.com/prometheus/client_model v0.2.0
github.com/prometheus/client_model/go
# github.com/prometheus/common v0.24.0
# github.com/prometheus/common v0.25.0
## explicit
github.com/prometheus/common/expfmt
github.com/prometheus/common/internal/bitbucket.org/ww/goautoneg
Expand Down