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
161
162
163
164
165
166
167
168
169
170
171
172
|
package sarama
import (
"testing"
"github.com/rcrowley/go-metrics"
)
func TestGetOrRegisterHistogram(t *testing.T) {
metricRegistry := metrics.NewRegistry()
histogram := getOrRegisterHistogram("name", metricRegistry)
if histogram == nil {
t.Error("Unexpected nil histogram")
}
// Fetch the metric
foundHistogram := metricRegistry.Get("name")
if foundHistogram != histogram {
t.Error("Unexpected different histogram", foundHistogram, histogram)
}
// Try to register the metric again
sameHistogram := getOrRegisterHistogram("name", metricRegistry)
if sameHistogram != histogram {
t.Error("Unexpected different histogram", sameHistogram, histogram)
}
}
func TestGetMetricNameForBroker(t *testing.T) {
metricName := getMetricNameForBroker("name", &Broker{id: 1})
if metricName != "name-for-broker-1" {
t.Error("Unexpected metric name", metricName)
}
}
// Common type and functions for metric validation
type metricValidator struct {
name string
validator func(*testing.T, interface{})
}
type metricValidators []*metricValidator
func newMetricValidators() metricValidators {
return make([]*metricValidator, 0, 32)
}
func (m *metricValidators) register(validator *metricValidator) {
*m = append(*m, validator)
}
func (m *metricValidators) registerForBroker(broker *Broker, validator *metricValidator) {
m.register(&metricValidator{getMetricNameForBroker(validator.name, broker), validator.validator})
}
func (m *metricValidators) registerForGlobalAndTopic(topic string, validator *metricValidator) {
m.register(&metricValidator{validator.name, validator.validator})
m.register(&metricValidator{getMetricNameForTopic(validator.name, topic), validator.validator})
}
func (m *metricValidators) registerForAllBrokers(broker *Broker, validator *metricValidator) {
m.register(validator)
m.registerForBroker(broker, validator)
}
func (m metricValidators) run(t *testing.T, r metrics.Registry) {
for _, metricValidator := range m {
metric := r.Get(metricValidator.name)
if metric == nil {
t.Error("No metric named", metricValidator.name)
} else {
metricValidator.validator(t, metric)
}
}
}
func meterValidator(name string, extraValidator func(*testing.T, metrics.Meter)) *metricValidator {
return &metricValidator{
name: name,
validator: func(t *testing.T, metric interface{}) {
if meter, ok := metric.(metrics.Meter); !ok {
t.Errorf("Expected meter metric for '%s', got %T", name, metric)
} else {
extraValidator(t, meter)
}
},
}
}
func countMeterValidator(name string, expectedCount int) *metricValidator {
return meterValidator(name, func(t *testing.T, meter metrics.Meter) {
count := meter.Count()
if count != int64(expectedCount) {
t.Errorf("Expected meter metric '%s' count = %d, got %d", name, expectedCount, count)
}
})
}
func minCountMeterValidator(name string, minCount int) *metricValidator {
return meterValidator(name, func(t *testing.T, meter metrics.Meter) {
count := meter.Count()
if count < int64(minCount) {
t.Errorf("Expected meter metric '%s' count >= %d, got %d", name, minCount, count)
}
})
}
func histogramValidator(name string, extraValidator func(*testing.T, metrics.Histogram)) *metricValidator {
return &metricValidator{
name: name,
validator: func(t *testing.T, metric interface{}) {
if histogram, ok := metric.(metrics.Histogram); !ok {
t.Errorf("Expected histogram metric for '%s', got %T", name, metric)
} else {
extraValidator(t, histogram)
}
},
}
}
func countHistogramValidator(name string, expectedCount int) *metricValidator {
return histogramValidator(name, func(t *testing.T, histogram metrics.Histogram) {
count := histogram.Count()
if count != int64(expectedCount) {
t.Errorf("Expected histogram metric '%s' count = %d, got %d", name, expectedCount, count)
}
})
}
func minCountHistogramValidator(name string, minCount int) *metricValidator {
return histogramValidator(name, func(t *testing.T, histogram metrics.Histogram) {
count := histogram.Count()
if count < int64(minCount) {
t.Errorf("Expected histogram metric '%s' count >= %d, got %d", name, minCount, count)
}
})
}
func minMaxHistogramValidator(name string, expectedMin int, expectedMax int) *metricValidator {
return histogramValidator(name, func(t *testing.T, histogram metrics.Histogram) {
min := int(histogram.Min())
if min != expectedMin {
t.Errorf("Expected histogram metric '%s' min = %d, got %d", name, expectedMin, min)
}
max := int(histogram.Max())
if max != expectedMax {
t.Errorf("Expected histogram metric '%s' max = %d, got %d", name, expectedMax, max)
}
})
}
func minValHistogramValidator(name string, minMin int) *metricValidator {
return histogramValidator(name, func(t *testing.T, histogram metrics.Histogram) {
min := int(histogram.Min())
if min < minMin {
t.Errorf("Expected histogram metric '%s' min >= %d, got %d", name, minMin, min)
}
})
}
func maxValHistogramValidator(name string, maxMax int) *metricValidator {
return histogramValidator(name, func(t *testing.T, histogram metrics.Histogram) {
max := int(histogram.Max())
if max > maxMax {
t.Errorf("Expected histogram metric '%s' max <= %d, got %d", name, maxMax, max)
}
})
}
|
