2016-02-29 11:08:33 +00:00
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package udp_listener
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import (
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2017-03-24 19:03:36 +00:00
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"bufio"
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"bytes"
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2016-07-27 17:16:29 +00:00
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"fmt"
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"io/ioutil"
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"log"
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"net"
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"os"
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"runtime"
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"strings"
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2016-02-29 11:08:33 +00:00
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"testing"
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"github.com/influxdata/telegraf/plugins/parsers"
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"github.com/influxdata/telegraf/testutil"
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2016-07-27 17:16:29 +00:00
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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const (
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testMsg = "cpu_load_short,host=server01 value=12.0 1422568543702900257\n"
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testMsgs = `
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cpu_load_short,host=server02 value=12.0 1422568543702900257
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cpu_load_short,host=server03 value=12.0 1422568543702900257
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cpu_load_short,host=server04 value=12.0 1422568543702900257
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cpu_load_short,host=server05 value=12.0 1422568543702900257
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cpu_load_short,host=server06 value=12.0 1422568543702900257
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`
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)
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func newTestUdpListener() (*UdpListener, chan []byte) {
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in := make(chan []byte, 1500)
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listener := &UdpListener{
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ServiceAddress: ":8125",
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AllowedPendingMessages: 10000,
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in: in,
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done: make(chan struct{}),
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}
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return listener, in
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}
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2016-07-27 17:16:29 +00:00
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func TestHighTrafficUDP(t *testing.T) {
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listener := UdpListener{
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ServiceAddress: ":8126",
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AllowedPendingMessages: 100000,
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}
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listener.parser, _ = parsers.NewInfluxParser()
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acc := &testutil.Accumulator{}
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// send multiple messages to socket
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err := listener.Start(acc)
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require.NoError(t, err)
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conn, err := net.Dial("udp", "127.0.0.1:8126")
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require.NoError(t, err)
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mlen := int64(len(testMsgs))
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var sent int64
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for i := 0; i < 20000; i++ {
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for sent > listener.BytesRecv.Get()+32000 {
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// more than 32kb sitting in OS buffer, let it drain
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runtime.Gosched()
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}
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conn.Write([]byte(testMsgs))
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sent += mlen
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}
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for sent > listener.BytesRecv.Get() {
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runtime.Gosched()
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}
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for len(listener.in) > 0 {
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runtime.Gosched()
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}
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listener.Stop()
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assert.Equal(t, uint64(100000), acc.NMetrics())
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}
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func TestConnectUDP(t *testing.T) {
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listener := UdpListener{
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ServiceAddress: ":8127",
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AllowedPendingMessages: 10000,
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}
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listener.parser, _ = parsers.NewInfluxParser()
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acc := &testutil.Accumulator{}
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require.NoError(t, listener.Start(acc))
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defer listener.Stop()
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conn, err := net.Dial("udp", "127.0.0.1:8127")
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require.NoError(t, err)
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// send single message to socket
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fmt.Fprintf(conn, testMsg)
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acc.Wait(1)
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acc.AssertContainsTaggedFields(t, "cpu_load_short",
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map[string]interface{}{"value": float64(12)},
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map[string]string{"host": "server01"},
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)
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// send multiple messages to socket
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fmt.Fprintf(conn, testMsgs)
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acc.Wait(6)
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hostTags := []string{"server02", "server03",
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"server04", "server05", "server06"}
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for _, hostTag := range hostTags {
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acc.AssertContainsTaggedFields(t, "cpu_load_short",
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map[string]interface{}{"value": float64(12)},
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map[string]string{"host": hostTag},
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)
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}
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}
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2016-02-29 11:08:33 +00:00
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func TestRunParser(t *testing.T) {
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log.SetOutput(ioutil.Discard)
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2016-11-28 18:19:35 +00:00
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var testmsg = []byte("cpu_load_short,host=server01 value=12.0 1422568543702900257\n")
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2016-02-29 11:08:33 +00:00
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listener, in := newTestUdpListener()
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acc := testutil.Accumulator{}
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listener.acc = &acc
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defer close(listener.done)
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listener.parser, _ = parsers.NewInfluxParser()
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listener.wg.Add(1)
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go listener.udpParser()
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in <- testmsg
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listener.Gather(&acc)
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acc.Wait(1)
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acc.AssertContainsTaggedFields(t, "cpu_load_short",
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map[string]interface{}{"value": float64(12)},
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map[string]string{"host": "server01"},
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)
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}
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func TestRunParserInvalidMsg(t *testing.T) {
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log.SetOutput(ioutil.Discard)
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var testmsg = []byte("cpu_load_short")
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listener, in := newTestUdpListener()
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acc := testutil.Accumulator{}
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listener.acc = &acc
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defer close(listener.done)
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listener.parser, _ = parsers.NewInfluxParser()
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listener.wg.Add(1)
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2016-02-29 11:08:33 +00:00
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go listener.udpParser()
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2017-03-24 19:03:36 +00:00
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buf := bytes.NewBuffer(nil)
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log.SetOutput(buf)
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defer log.SetOutput(os.Stderr)
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in <- testmsg
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2017-03-24 19:03:36 +00:00
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scnr := bufio.NewScanner(buf)
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for scnr.Scan() {
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if strings.Contains(scnr.Text(), fmt.Sprintf(malformedwarn, 1)) {
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break
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}
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}
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}
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func TestRunParserGraphiteMsg(t *testing.T) {
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log.SetOutput(ioutil.Discard)
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var testmsg = []byte("cpu.load.graphite 12 1454780029")
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listener, in := newTestUdpListener()
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acc := testutil.Accumulator{}
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listener.acc = &acc
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defer close(listener.done)
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listener.parser, _ = parsers.NewGraphiteParser("_", []string{}, nil)
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listener.wg.Add(1)
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go listener.udpParser()
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in <- testmsg
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listener.Gather(&acc)
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2017-03-24 19:03:36 +00:00
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acc.Wait(1)
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acc.AssertContainsFields(t, "cpu_load_graphite",
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map[string]interface{}{"value": float64(12)})
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}
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func TestRunParserJSONMsg(t *testing.T) {
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log.SetOutput(ioutil.Discard)
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var testmsg = []byte("{\"a\": 5, \"b\": {\"c\": 6}}\n")
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listener, in := newTestUdpListener()
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acc := testutil.Accumulator{}
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listener.acc = &acc
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defer close(listener.done)
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listener.parser, _ = parsers.NewJSONParser("udp_json_test", []string{}, nil)
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2016-03-17 16:16:12 +00:00
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listener.wg.Add(1)
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go listener.udpParser()
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in <- testmsg
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listener.Gather(&acc)
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2017-03-24 19:03:36 +00:00
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acc.Wait(1)
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2016-02-29 11:08:33 +00:00
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acc.AssertContainsFields(t, "udp_json_test",
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map[string]interface{}{
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"a": float64(5),
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"b_c": float64(6),
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})
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}
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