telegraf/plugins/inputs/phpfpm/phpfpm_test.go

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package phpfpm
import (
"crypto/rand"
"encoding/binary"
"fmt"
"net"
"net/http"
"net/http/fcgi"
"net/http/httptest"
"testing"
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"github.com/influxdata/telegraf/testutil"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
type statServer struct{}
// We create a fake server to return test data
func (s statServer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "text/plain")
w.Header().Set("Content-Length", fmt.Sprint(len(outputSample)))
fmt.Fprint(w, outputSample)
}
func TestPhpFpmGeneratesMetrics_From_Http(t *testing.T) {
sv := statServer{}
ts := httptest.NewServer(sv)
defer ts.Close()
r := &phpfpm{
Urls: []string{ts.URL},
}
var acc testutil.Accumulator
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err := acc.GatherError(r.Gather)
require.NoError(t, err)
tags := map[string]string{
"pool": "www",
"url": ts.URL,
}
fields := map[string]interface{}{
"accepted_conn": int64(3),
"listen_queue": int64(1),
"max_listen_queue": int64(0),
"listen_queue_len": int64(0),
"idle_processes": int64(1),
"active_processes": int64(1),
"total_processes": int64(2),
"max_active_processes": int64(1),
"max_children_reached": int64(2),
"slow_requests": int64(1),
}
acc.AssertContainsTaggedFields(t, "phpfpm", fields, tags)
}
func TestPhpFpmGeneratesMetrics_From_Fcgi(t *testing.T) {
// Let OS find an available port
tcp, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
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t.Fatal("Cannot initialize test server")
}
defer tcp.Close()
s := statServer{}
go fcgi.Serve(tcp, s)
//Now we tested again above server
r := &phpfpm{
Urls: []string{"fcgi://" + tcp.Addr().String() + "/status"},
}
var acc testutil.Accumulator
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err = acc.GatherError(r.Gather)
require.NoError(t, err)
tags := map[string]string{
"pool": "www",
"url": r.Urls[0],
}
fields := map[string]interface{}{
"accepted_conn": int64(3),
"listen_queue": int64(1),
"max_listen_queue": int64(0),
"listen_queue_len": int64(0),
"idle_processes": int64(1),
"active_processes": int64(1),
"total_processes": int64(2),
"max_active_processes": int64(1),
"max_children_reached": int64(2),
"slow_requests": int64(1),
}
acc.AssertContainsTaggedFields(t, "phpfpm", fields, tags)
}
func TestPhpFpmGeneratesMetrics_From_Socket(t *testing.T) {
// Create a socket in /tmp because we always have write permission and if the
// removing of socket fail when system restart /tmp is clear so
// we don't have junk files around
var randomNumber int64
binary.Read(rand.Reader, binary.LittleEndian, &randomNumber)
tcp, err := net.Listen("unix", fmt.Sprintf("/tmp/test-fpm%d.sock", randomNumber))
if err != nil {
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t.Fatal("Cannot initialize server on port ")
}
defer tcp.Close()
s := statServer{}
go fcgi.Serve(tcp, s)
r := &phpfpm{
Urls: []string{tcp.Addr().String()},
}
var acc testutil.Accumulator
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err = acc.GatherError(r.Gather)
require.NoError(t, err)
tags := map[string]string{
"pool": "www",
"url": r.Urls[0],
}
fields := map[string]interface{}{
"accepted_conn": int64(3),
"listen_queue": int64(1),
"max_listen_queue": int64(0),
"listen_queue_len": int64(0),
"idle_processes": int64(1),
"active_processes": int64(1),
"total_processes": int64(2),
"max_active_processes": int64(1),
"max_children_reached": int64(2),
"slow_requests": int64(1),
}
acc.AssertContainsTaggedFields(t, "phpfpm", fields, tags)
}
func TestPhpFpmGeneratesMetrics_From_Socket_Custom_Status_Path(t *testing.T) {
// Create a socket in /tmp because we always have write permission. If the
// removing of socket fail we won't have junk files around. Cuz when system
// restart, it clears out /tmp
var randomNumber int64
binary.Read(rand.Reader, binary.LittleEndian, &randomNumber)
tcp, err := net.Listen("unix", fmt.Sprintf("/tmp/test-fpm%d.sock", randomNumber))
if err != nil {
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t.Fatal("Cannot initialize server on port ")
}
defer tcp.Close()
s := statServer{}
go fcgi.Serve(tcp, s)
r := &phpfpm{
Urls: []string{tcp.Addr().String() + ":custom-status-path"},
}
var acc testutil.Accumulator
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err = acc.GatherError(r.Gather)
require.NoError(t, err)
tags := map[string]string{
"pool": "www",
"url": r.Urls[0],
}
fields := map[string]interface{}{
"accepted_conn": int64(3),
"listen_queue": int64(1),
"max_listen_queue": int64(0),
"listen_queue_len": int64(0),
"idle_processes": int64(1),
"active_processes": int64(1),
"total_processes": int64(2),
"max_active_processes": int64(1),
"max_children_reached": int64(2),
"slow_requests": int64(1),
}
acc.AssertContainsTaggedFields(t, "phpfpm", fields, tags)
}
//When not passing server config, we default to localhost
//We just want to make sure we did request stat from localhost
func TestPhpFpmDefaultGetFromLocalhost(t *testing.T) {
r := &phpfpm{}
var acc testutil.Accumulator
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err := acc.GatherError(r.Gather)
require.Error(t, err)
assert.Contains(t, err.Error(), "127.0.0.1/status")
}
func TestPhpFpmGeneratesMetrics_Throw_Error_When_Fpm_Status_Is_Not_Responding(t *testing.T) {
r := &phpfpm{
Urls: []string{"http://aninvalidone"},
}
var acc testutil.Accumulator
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err := acc.GatherError(r.Gather)
require.Error(t, err)
assert.Contains(t, err.Error(), `Unable to connect to phpfpm status page 'http://aninvalidone': Get http://aninvalidone: dial tcp: lookup aninvalidone`)
}
func TestPhpFpmGeneratesMetrics_Throw_Error_When_Socket_Path_Is_Invalid(t *testing.T) {
r := &phpfpm{
Urls: []string{"/tmp/invalid.sock"},
}
var acc testutil.Accumulator
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err := acc.GatherError(r.Gather)
require.Error(t, err)
assert.Equal(t, `Socket doesn't exist '/tmp/invalid.sock': stat /tmp/invalid.sock: no such file or directory`, err.Error())
}
const outputSample = `
pool: www
process manager: dynamic
start time: 11/Oct/2015:23:38:51 +0000
start since: 1991
accepted conn: 3
listen queue: 1
max listen queue: 0
listen queue len: 0
idle processes: 1
active processes: 1
total processes: 2
max active processes: 1
max children reached: 2
slow requests: 1
`