telegraf/plugins/inputs/raindrops/raindrops_test.go

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package raindrops
import (
"fmt"
"net"
"net/http"
"net/http/httptest"
"net/url"
"testing"
"github.com/influxdata/telegraf/testutil"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"time"
)
const sampleResponse = `
calling: 100
writing: 200
0.0.0.0:8080 active: 1
0.0.0.0:8080 queued: 2
0.0.0.0:8081 active: 3
0.0.0.0:8081 queued: 4
127.0.0.1:8082 active: 5
127.0.0.1:8082 queued: 6
0.0.0.0:8083 active: 7
0.0.0.0:8083 queued: 8
0.0.0.0:8084 active: 9
0.0.0.0:8084 queued: 10
0.0.0.0:3000 active: 11
0.0.0.0:3000 queued: 12
/tmp/listen.me active: 13
/tmp/listen.me queued: 14
`
// Verify that raindrops tags are properly parsed based on the server
func TestRaindropsTags(t *testing.T) {
urls := []string{"http://localhost/_raindrops", "http://localhost:80/_raindrops"}
var addr *url.URL
r := &Raindrops{}
for _, url1 := range urls {
addr, _ = url.Parse(url1)
tagMap := r.getTags(addr)
assert.Contains(t, tagMap["server"], "localhost")
}
}
func TestRaindropsGeneratesMetrics(t *testing.T) {
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
var rsp string
if r.URL.Path == "/_raindrops" {
rsp = sampleResponse
} else {
panic("Cannot handle request")
}
fmt.Fprintln(w, rsp)
}))
defer ts.Close()
n := &Raindrops{
Urls: []string{fmt.Sprintf("%s/_raindrops", ts.URL)},
http_client: &http.Client{Transport: &http.Transport{
ResponseHeaderTimeout: time.Duration(3 * time.Second),
}},
}
var acc testutil.Accumulator
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err := acc.GatherError(n.Gather)
require.NoError(t, err)
fields := map[string]interface{}{
"calling": uint64(100),
"writing": uint64(200),
}
addr, err := url.Parse(ts.URL)
if err != nil {
panic(err)
}
host, port, err := net.SplitHostPort(addr.Host)
if err != nil {
host = addr.Host
if addr.Scheme == "http" {
port = "80"
} else if addr.Scheme == "https" {
port = "443"
} else {
port = ""
}
}
tags := map[string]string{"server": host, "port": port}
acc.AssertContainsTaggedFields(t, "raindrops", fields, tags)
tags = map[string]string{
"port": "8081",
"ip": "0.0.0.0",
}
fields = map[string]interface{}{
"active": uint64(3),
"queued": uint64(4),
}
acc.AssertContainsTaggedFields(t, "raindrops_listen", fields, tags)
}