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parser_test.go
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package prometheus
import (
"net/http"
"testing"
"github.com/stretchr/testify/assert"
)
const validUniqueGauge = `# HELP cadvisor_version_info A metric with a constant '1' value labeled by kernel version, OS version, docker version, cadvisor version & cadvisor revision.
# TYPE cadvisor_version_info gauge
cadvisor_version_info{cadvisorRevision="",cadvisorVersion="",dockerVersion="1.8.2",kernelVersion="3.10.0-229.20.1.el7.x86_64",osVersion="CentOS Linux 7 (Core)"} 1
`
const validUniqueCounter = `# HELP get_token_fail_count Counter of failed Token() requests to the alternate token source
# TYPE get_token_fail_count counter
get_token_fail_count 0
`
const validUniqueSummary = `# HELP http_request_duration_microseconds The HTTP request latencies in microseconds.
# TYPE http_request_duration_microseconds summary
http_request_duration_microseconds{handler="prometheus",quantile="0.5"} 552048.506
http_request_duration_microseconds{handler="prometheus",quantile="0.9"} 5.876804288e+06
http_request_duration_microseconds{handler="prometheus",quantile="0.99"} 5.876804288e+06
http_request_duration_microseconds_sum{handler="prometheus"} 1.8909097205e+07
http_request_duration_microseconds_count{handler="prometheus"} 9
`
const validUniqueHistogram = `# HELP apiserver_request_latencies Response latency distribution in microseconds for each verb, resource and client.
# TYPE apiserver_request_latencies histogram
apiserver_request_latencies_bucket{resource="bindings",verb="POST",le="125000"} 1994
apiserver_request_latencies_bucket{resource="bindings",verb="POST",le="250000"} 1997
apiserver_request_latencies_bucket{resource="bindings",verb="POST",le="500000"} 2000
apiserver_request_latencies_bucket{resource="bindings",verb="POST",le="1e+06"} 2005
apiserver_request_latencies_bucket{resource="bindings",verb="POST",le="2e+06"} 2012
apiserver_request_latencies_bucket{resource="bindings",verb="POST",le="4e+06"} 2017
apiserver_request_latencies_bucket{resource="bindings",verb="POST",le="8e+06"} 2024
apiserver_request_latencies_bucket{resource="bindings",verb="POST",le="+Inf"} 2025
apiserver_request_latencies_sum{resource="bindings",verb="POST"} 1.02726334e+08
apiserver_request_latencies_count{resource="bindings",verb="POST"} 2025
`
func TestParseValidPrometheus(t *testing.T) {
// Gauge value
metrics, err := Parse([]byte(validUniqueGauge), http.Header{})
assert.NoError(t, err)
assert.Len(t, metrics, 1)
assert.Equal(t, "cadvisor_version_info", metrics[0].Name())
assert.Equal(t, map[string]interface{}{
"gauge": float64(1),
}, metrics[0].Fields())
assert.Equal(t, map[string]string{
"osVersion": "CentOS Linux 7 (Core)",
"cadvisorRevision": "",
"cadvisorVersion": "",
"dockerVersion": "1.8.2",
"kernelVersion": "3.10.0-229.20.1.el7.x86_64",
}, metrics[0].Tags())
// Counter value
metrics, err = Parse([]byte(validUniqueCounter), http.Header{})
assert.NoError(t, err)
assert.Len(t, metrics, 1)
assert.Equal(t, "get_token_fail_count", metrics[0].Name())
assert.Equal(t, map[string]interface{}{
"counter": float64(0),
}, metrics[0].Fields())
assert.Equal(t, map[string]string{}, metrics[0].Tags())
// Summary data
//SetDefaultTags(map[string]string{})
metrics, err = Parse([]byte(validUniqueSummary), http.Header{})
assert.NoError(t, err)
assert.Len(t, metrics, 1)
assert.Equal(t, "http_request_duration_microseconds", metrics[0].Name())
assert.Equal(t, map[string]interface{}{
"0.5": 552048.506,
"0.9": 5.876804288e+06,
"0.99": 5.876804288e+06,
"count": 9.0,
"sum": 1.8909097205e+07,
}, metrics[0].Fields())
assert.Equal(t, map[string]string{"handler": "prometheus"}, metrics[0].Tags())
// histogram data
metrics, err = Parse([]byte(validUniqueHistogram), http.Header{})
assert.NoError(t, err)
assert.Len(t, metrics, 1)
assert.Equal(t, "apiserver_request_latencies", metrics[0].Name())
assert.Equal(t, map[string]interface{}{
"500000": 2000.0,
"count": 2025.0,
"sum": 1.02726334e+08,
"250000": 1997.0,
"2e+06": 2012.0,
"4e+06": 2017.0,
"8e+06": 2024.0,
"+Inf": 2025.0,
"125000": 1994.0,
"1e+06": 2005.0,
}, metrics[0].Fields())
assert.Equal(t,
map[string]string{"verb": "POST", "resource": "bindings"},
metrics[0].Tags())
}