151 lines
3.5 KiB
Go
151 lines
3.5 KiB
Go
package kafka_consumer_legacy
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import (
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"strings"
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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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"github.com/Shopify/sarama"
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"github.com/stretchr/testify/assert"
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)
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const (
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testMsg = "cpu_load_short,host=server01 value=23422.0 1422568543702900257\n"
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testMsgGraphite = "cpu.load.short.graphite 23422 1454780029"
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testMsgJSON = "{\"a\": 5, \"b\": {\"c\": 6}}\n"
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invalidMsg = "cpu_load_short,host=server01 1422568543702900257\n"
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)
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func newTestKafka() (*Kafka, chan *sarama.ConsumerMessage) {
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in := make(chan *sarama.ConsumerMessage, 1000)
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k := Kafka{
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ConsumerGroup: "test",
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Topics: []string{"telegraf"},
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ZookeeperPeers: []string{"localhost:2181"},
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Offset: "oldest",
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in: in,
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doNotCommitMsgs: true,
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errs: make(chan error, 1000),
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done: make(chan struct{}),
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}
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return &k, in
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}
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// Test that the parser parses kafka messages into points
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func TestRunParser(t *testing.T) {
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k, in := newTestKafka()
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acc := testutil.Accumulator{}
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k.acc = &acc
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defer close(k.done)
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k.parser, _ = parsers.NewInfluxParser()
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go k.receiver()
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in <- saramaMsg(testMsg)
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acc.Wait(1)
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assert.Equal(t, acc.NFields(), 1)
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}
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// Test that the parser ignores invalid messages
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func TestRunParserInvalidMsg(t *testing.T) {
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k, in := newTestKafka()
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acc := testutil.Accumulator{}
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k.acc = &acc
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defer close(k.done)
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k.parser, _ = parsers.NewInfluxParser()
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go k.receiver()
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in <- saramaMsg(invalidMsg)
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acc.WaitError(1)
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assert.Equal(t, acc.NFields(), 0)
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}
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// Test that overlong messages are dropped
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func TestDropOverlongMsg(t *testing.T) {
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const maxMessageLen = 64 * 1024
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k, in := newTestKafka()
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k.MaxMessageLen = maxMessageLen
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acc := testutil.Accumulator{}
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k.acc = &acc
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defer close(k.done)
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overlongMsg := strings.Repeat("v", maxMessageLen+1)
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go k.receiver()
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in <- saramaMsg(overlongMsg)
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acc.WaitError(1)
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assert.Equal(t, acc.NFields(), 0)
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}
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// Test that the parser parses kafka messages into points
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func TestRunParserAndGather(t *testing.T) {
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k, in := newTestKafka()
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acc := testutil.Accumulator{}
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k.acc = &acc
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defer close(k.done)
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k.parser, _ = parsers.NewInfluxParser()
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go k.receiver()
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in <- saramaMsg(testMsg)
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acc.Wait(1)
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acc.GatherError(k.Gather)
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assert.Equal(t, acc.NFields(), 1)
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acc.AssertContainsFields(t, "cpu_load_short",
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map[string]interface{}{"value": float64(23422)})
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}
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// Test that the parser parses kafka messages into points
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func TestRunParserAndGatherGraphite(t *testing.T) {
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k, in := newTestKafka()
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acc := testutil.Accumulator{}
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k.acc = &acc
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defer close(k.done)
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k.parser, _ = parsers.NewGraphiteParser("_", []string{}, nil)
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go k.receiver()
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in <- saramaMsg(testMsgGraphite)
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acc.Wait(1)
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acc.GatherError(k.Gather)
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assert.Equal(t, acc.NFields(), 1)
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acc.AssertContainsFields(t, "cpu_load_short_graphite",
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map[string]interface{}{"value": float64(23422)})
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}
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// Test that the parser parses kafka messages into points
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func TestRunParserAndGatherJSON(t *testing.T) {
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k, in := newTestKafka()
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acc := testutil.Accumulator{}
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k.acc = &acc
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defer close(k.done)
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k.parser, _ = parsers.NewJSONParser("kafka_json_test", []string{}, nil, nil)
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go k.receiver()
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in <- saramaMsg(testMsgJSON)
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acc.Wait(1)
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acc.GatherError(k.Gather)
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assert.Equal(t, acc.NFields(), 2)
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acc.AssertContainsFields(t, "kafka_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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func saramaMsg(val string) *sarama.ConsumerMessage {
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return &sarama.ConsumerMessage{
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Key: nil,
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Value: []byte(val),
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Offset: 0,
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Partition: 0,
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}
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}
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