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heartbeat.go
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heartbeat.go
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//
// Copyright (c) 2020-2021 Datastax, Inc.
//
// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you 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 cfg
import (
"errors"
"fmt"
"net/http"
"time"
"github.com/apex/log"
"github.com/hashicorp/go-retryablehttp"
)
// StartHeartBeat starts heartbeat monitoring the program by OpsGenie
func StartHeartBeat() {
// opsgenie url in the format of "https://api.opsgenie.com/v2/heartbeats/<component>/ping"
genieURL := GetConfig().OpsGenieConfig.HeartBeatURL
genieKey := GetConfig().OpsGenieConfig.HeartbeatKey
if genieURL != "" && genieKey != "" {
err := HeartBeatToOpsGenie(genieURL, genieKey)
if err != nil {
Alert(fmt.Sprintf("OpsGenie error %v", err))
}
}
}
// UptimeHeartBeat sends heartbeat to uptime counter
func UptimeHeartBeat() {
PromCounter(HeartbeatCounterOpt(), GetConfig().Name)
}
// HeartBeatToOpsGenie send heart beat to ops genie
func HeartBeatToOpsGenie(genieURL, genieKey string) error {
name := GetConfig().Name
client := retryablehttp.NewClient()
client.HTTPClient.Timeout = time.Duration(5) * time.Second
client.RetryWaitMin = 4 * time.Second
client.RetryWaitMax = 64 * time.Second
client.RetryMax = 2
req, err := retryablehttp.NewRequest(http.MethodGet, genieURL, nil)
if err != nil {
return err
}
req.Header.Set("Authorization", genieKey)
resp, err := client.Do(req)
if resp != nil {
defer resp.Body.Close()
}
if err != nil {
Alert(fmt.Sprintf("from %s Opsgenie returns error %v", name, err))
return err
}
log.Infof("opsgenie status code %d", resp.StatusCode)
if resp.StatusCode > 300 {
msg := fmt.Sprintf("from %s Opsgenie returns incorrect status code %d", name, resp.StatusCode)
Alert(msg)
return errors.New(msg)
}
return nil
}