Burrow/core/internal/httpserver/prometheus_test.go at 4192b62679eb660c4192c62c1851797fcb529cce · linkedin/Burrow · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
package httpserver

import (
	"net/http"
	"net/http/httptest"
	"testing"

	"github.com/stretchr/testify/assert"

	"github.com/linkedin/Burrow/core/protocol"
)

func TestHttpServer_handlePrometheusMetrics(t *testing.T) {
	coordinator := fixtureConfiguredCoordinator()

	// Respond to the expected storage requests
	go func() {
		request := <-coordinator.App.StorageChannel
		assert.Equalf(t, protocol.StorageFetchClusters, request.RequestType, "Expected request of type StorageFetchClusters, not %v", request.RequestType)
		request.Reply <- []string{"testcluster"}
		close(request.Reply)

		// List of consumers
		request = <-coordinator.App.StorageChannel
		assert.Equalf(t, protocol.StorageFetchConsumers, request.RequestType, "Expected request of type StorageFetchConsumers, not %v", request.RequestType)
		assert.Equalf(t, "testcluster", request.Cluster, "Expected request Cluster to be testcluster, not %v", request.Cluster)
		request.Reply <- []string{"testgroup", "testgroup2"}
		close(request.Reply)

		// List of topics
		request = <-coordinator.App.StorageChannel
		assert.Equalf(t, protocol.StorageFetchTopics, request.RequestType, "Expected request of type StorageFetchTopics, not %v", request.RequestType)
		assert.Equalf(t, "testcluster", request.Cluster, "Expected request Cluster to be testcluster, not %v", request.Cluster)
		request.Reply <- []string{"testtopic", "testtopic1"}
		close(request.Reply)

		// Topic details
		request = <-coordinator.App.StorageChannel
		assert.Equalf(t, protocol.StorageFetchTopic, request.RequestType, "Expected request of type StorageFetchTopic, not %v", request.RequestType)
		assert.Equalf(t, "testcluster", request.Cluster, "Expected request Cluster to be testcluster, not %v", request.Cluster)
		assert.Equalf(t, "testtopic", request.Topic, "Expected request Topic to be testtopic, not %v", request.Topic)
		request.Reply <- []int64{6556, 5566}
		close(request.Reply)

		request = <-coordinator.App.StorageChannel
		assert.Equalf(t, protocol.StorageFetchTopic, request.RequestType, "Expected request of type StorageFetchTopic, not %v", request.RequestType)
		assert.Equalf(t, "testcluster", request.Cluster, "Expected request Cluster to be testcluster, not %v", request.Cluster)
		assert.Equalf(t, "testtopic1", request.Topic, "Expected request Topic to be testtopic, not %v", request.Topic)
		request.Reply <- []int64{54}
		close(request.Reply)
	}()

	// Respond to the expected evaluator requests
	go func() {
		// testgroup happy paths
		request := <-coordinator.App.EvaluatorChannel
		assert.Equalf(t, "testcluster", request.Cluster, "Expected request Cluster to be testcluster, not %v", request.Cluster)
		assert.Equalf(t, "testgroup", request.Group, "Expected request Group to be testgroup, not %v", request.Group)
		assert.True(t, request.ShowAll, "Expected request ShowAll to be True")
		response := &protocol.ConsumerGroupStatus{
			Cluster:  request.Cluster,
			Group:    request.Group,
			Status:   protocol.StatusOK,
			Complete: 1.0,
			Partitions: []*protocol.PartitionStatus{
				{
					Topic:      "testtopic",
					Partition:  0,
					Status:     protocol.StatusOK,
					CurrentLag: 100,
					Complete:   1.0,
					End: &protocol.ConsumerOffset{
						Offset: 22663,
					},
					Owner: "/1.1.1.1",
				},
				{
					Topic:      "testtopic",
					Partition:  1,
					Status:     protocol.StatusOK,
					CurrentLag: 10,
					Complete:   1.0,
					End: &protocol.ConsumerOffset{
						Offset: 2488,
					},
					Owner: "/1.1.1.1",
				},
				{
					Topic:      "testtopic1",
					Partition:  0,
					Status:     protocol.StatusOK,
					CurrentLag: 50,
					Complete:   1.0,
					End: &protocol.ConsumerOffset{
						Offset: 99888,
					},
					Owner: "/1.1.1.1",
				},
				{
					Topic:      "incomplete",
					Partition:  0,
					Status:     protocol.StatusOK,
					CurrentLag: 0,
					Complete:   0.2,
					End: &protocol.ConsumerOffset{
						Offset: 5335,
					},
					Owner: "/1.1.1.1",
				},
			},
			TotalPartitions: 2134,
			Maxlag:          &protocol.PartitionStatus{},
			TotalLag:        2345,
		}
		request.Reply <- response
		close(request.Reply)

		// testgroup2 not found
		request = <-coordinator.App.EvaluatorChannel
		assert.Equalf(t, "testcluster", request.Cluster, "Expected request Cluster to be testcluster, not %v", request.Cluster)
		assert.Equalf(t, "testgroup2", request.Group, "Expected request Group to be testgroup, not %v", request.Group)
		assert.True(t, request.ShowAll, "Expected request ShowAll to be True")
		response = &protocol.ConsumerGroupStatus{
			Cluster: request.Cluster,
			Group:   request.Group,
			Status:  protocol.StatusNotFound,
		}
		request.Reply <- response
		close(request.Reply)
	}()

	// Set up a request
	req, err := http.NewRequest("GET", "/metrics", nil)
	assert.NoError(t, err, "Expected request setup to return no error")

	// Call the handler via httprouter
	rr := httptest.NewRecorder()
	coordinator.router.ServeHTTP(rr, req)

	assert.Equalf(t, http.StatusOK, rr.Code, "Expected response code to be 200, not %v", rr.Code)

	promExp := rr.Body.String()
	assert.Contains(t, promExp, `burrow_kafka_consumer_status{cluster="testcluster",consumer_group="testgroup"} 1`)
	assert.Contains(t, promExp, `burrow_kafka_consumer_lag_total{cluster="testcluster",consumer_group="testgroup"} 2345`)

	assert.Contains(t, promExp, `burrow_kafka_consumer_partition_lag{cluster="testcluster",consumer_group="testgroup",owner="1.1.1.1",partition="0",topic="testtopic"} 100`)
	assert.Contains(t, promExp, `burrow_kafka_consumer_partition_lag{cluster="testcluster",consumer_group="testgroup",owner="1.1.1.1",partition="1",topic="testtopic"} 10`)
	assert.Contains(t, promExp, `burrow_kafka_consumer_partition_lag{cluster="testcluster",consumer_group="testgroup",owner="1.1.1.1",partition="0",topic="testtopic1"} 50`)

	assert.Contains(t, promExp, `burrow_kafka_consumer_current_offset{cluster="testcluster",consumer_group="testgroup",owner="1.1.1.1",partition="0",topic="testtopic"} 22663`)
	assert.Contains(t, promExp, `burrow_kafka_consumer_current_offset{cluster="testcluster",consumer_group="testgroup",owner="1.1.1.1",partition="1",topic="testtopic"} 2488`)
	assert.Contains(t, promExp, `burrow_kafka_consumer_current_offset{cluster="testcluster",consumer_group="testgroup",owner="1.1.1.1",partition="0",topic="testtopic1"} 99888`)

	assert.Contains(t, promExp, `burrow_kafka_topic_partition_offset{cluster="testcluster",partition="0",topic="testtopic"} 6556`)
	assert.Contains(t, promExp, `burrow_kafka_topic_partition_offset{cluster="testcluster",partition="1",topic="testtopic"} 5566`)
	assert.Contains(t, promExp, `burrow_kafka_topic_partition_offset{cluster="testcluster",partition="0",topic="testtopic1"} 54`)

	assert.NotContains(t, promExp, `burrow_kafka_consumer_partition_lag{cluster="testcluster",consumer_group="testgroup",partition="0",topic="incomplete"} 0`)
	assert.NotContains(t, promExp, "testgroup2")
}