/
prometheus_client.go
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/
prometheus_client.go
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/*
* Copyright (c) 2020 Devtron Labs
*
* 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 prometheus
import (
"fmt"
"github.com/prometheus/client_golang/api"
"github.com/prometheus/client_golang/api/prometheus/v1"
)
var prometheusAPI v1.API
var prometheusAPIMap map[string]v1.API
func Context(prometheusUrl string) (v1.API, error) {
if prometheusAPI != nil {
return prometheusAPI, nil
}
client, err := api.NewClient(api.Config{Address: prometheusUrl})
if err != nil {
fmt.Println("Error creating client")
fmt.Println(err)
return nil, err
}
prometheusAPI = v1.NewAPI(client)
return prometheusAPI, nil
}
func ContextByEnv(env string, prometheusUrl string) (v1.API, error) {
if prometheusAPIMap == nil {
prometheusAPIMap = make(map[string]v1.API)
}
if _, ok := prometheusAPIMap[env]; ok {
prometheusAPI = prometheusAPIMap[env]
} else {
client, err := api.NewClient(api.Config{Address: prometheusUrl})
if err != nil {
fmt.Println("Error creating client")
fmt.Println(err)
return nil, err
}
prometheusAPI = v1.NewAPI(client)
prometheusAPIMap[env] = prometheusAPI
}
return prometheusAPI, nil
}