b3060bfbd0
* Fix golangci-lint errors Signed-off-by: z1cheng <imchench@gmail.com> * Fix dupl errors Signed-off-by: z1cheng <imchench@gmail.com> * Fix comments Signed-off-by: z1cheng <imchench@gmail.com> * Fix errcheck lint errors Signed-off-by: z1cheng <imchench@gmail.com> * Fix assert in e2e test Signed-off-by: z1cheng <imchench@gmail.com> * Not interrupt the waitForPodsReady Signed-off-by: z1cheng <imchench@gmail.com> * Replace string with constant Signed-off-by: z1cheng <imchench@gmail.com> * Fix comments Signed-off-by: z1cheng <imchench@gmail.com> * Revert write file permision Signed-off-by: z1cheng <imchench@gmail.com> --------- Signed-off-by: z1cheng <imchench@gmail.com>
58 lines
1.7 KiB
Go
58 lines
1.7 KiB
Go
/*
|
|
Copyright 2019 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package framework
|
|
|
|
import (
|
|
"fmt"
|
|
"net/http"
|
|
|
|
dto "github.com/prometheus/client_model/go"
|
|
"github.com/prometheus/common/expfmt"
|
|
)
|
|
|
|
// GetMetric returns the current prometheus metric exposed by NGINX
|
|
func (f *Framework) GetMetric(metricName, ip string) (*dto.MetricFamily, error) {
|
|
url := fmt.Sprintf("http://%v:10254/metrics", ip)
|
|
|
|
client := &http.Client{}
|
|
req, err := http.NewRequest(http.MethodGet, url, http.NoBody)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("creating GET request for URL %q failed: %v", url, err)
|
|
}
|
|
resp, err := client.Do(req)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("executing GET request for URL %q failed: %v", url, err)
|
|
}
|
|
defer resp.Body.Close()
|
|
if resp.StatusCode != http.StatusOK {
|
|
return nil, fmt.Errorf("GET request for URL %q returned HTTP status %s", url, resp.Status)
|
|
}
|
|
|
|
var parser expfmt.TextParser
|
|
metrics, err := parser.TextToMetricFamilies(resp.Body)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("reading text format failed: %v", err)
|
|
}
|
|
|
|
for _, m := range metrics {
|
|
if m.GetName() == metricName {
|
|
return m, nil
|
|
}
|
|
}
|
|
|
|
return nil, fmt.Errorf("there is no metric with name %v", metricName)
|
|
}
|