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gcloud-monitor.go
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gcloud-monitor.go
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package gcloud
import (
"context"
"fmt"
"net/url"
"strconv"
logf "sigs.k8s.io/controller-runtime/pkg/log"
monitoring "cloud.google.com/go/monitoring/apiv3/v2"
monitoringpb "cloud.google.com/go/monitoring/apiv3/v2/monitoringpb"
"google.golang.org/api/iterator"
"google.golang.org/api/option"
monitoredres "google.golang.org/genproto/googleapis/api/monitoredres"
endpointmonitorv1alpha1 "github.com/stakater/IngressMonitorController/v2/api/v1alpha1"
"github.com/stakater/IngressMonitorController/v2/pkg/config"
"github.com/stakater/IngressMonitorController/v2/pkg/models"
)
var log = logf.Log.WithName("gcloud-monitor")
type MonitorService struct {
client *monitoring.UptimeCheckClient
projectID string
ctx context.Context
}
func (monitor *MonitorService) Equal(oldMonitor models.Monitor, newMonitor models.Monitor) bool {
// TODO: Retrieve oldMonitor config and compare it here
return false
}
func (service *MonitorService) Setup(provider config.Provider) {
service.ctx = context.Background()
client, err := monitoring.NewUptimeCheckClient(service.ctx, option.WithCredentialsJSON([]byte(provider.ApiKey)))
if err != nil {
log.Info("Error Seting Up Monitor Service: " + err.Error())
} else {
service.client = client
}
service.projectID = provider.GcloudConfig.ProjectID
}
func (service *MonitorService) GetByName(name string) (monitor *models.Monitor, err error) {
uptimeCheckConfigsIterator := service.client.ListUptimeCheckConfigs(service.ctx, &monitoringpb.ListUptimeCheckConfigsRequest{
Parent: "projects/" + service.projectID,
})
for {
uptimeCheckConfig, err := uptimeCheckConfigsIterator.Next()
if err == iterator.Done {
break
}
if err != nil {
return nil, fmt.Errorf("Error Locating Monitor: %s", err.Error())
}
if uptimeCheckConfig.DisplayName == name {
localMonitor := transformToMonitor(uptimeCheckConfig)
return &localMonitor, nil
}
}
return nil, fmt.Errorf("Unable to locate monitor with name %v", name)
}
func (service *MonitorService) GetAll() (monitors []models.Monitor) {
uptimeCheckConfigsIterator := service.client.ListUptimeCheckConfigs(service.ctx, &monitoringpb.ListUptimeCheckConfigsRequest{
Parent: "projects/" + service.projectID,
})
monitors = []models.Monitor{}
for {
uptimeCheckConfig, err := uptimeCheckConfigsIterator.Next()
if err == iterator.Done {
break
}
if err != nil {
log.Info("Error received while listing checks: " + err.Error())
return nil
}
monitors = append(monitors, transformToMonitor(uptimeCheckConfig))
}
return monitors
}
func (service *MonitorService) Add(monitor models.Monitor) {
url, err := url.Parse(monitor.URL)
if err != nil {
log.Info("Error Adding Monitor: " + err.Error())
return
}
portString := url.Port()
var port int
if portString == "" {
if url.Scheme == "http" {
port = 80
} else if url.Scheme == "https" {
port = 443
} else {
log.Info("Error Adding Monitor: unknown protocol " + url.Scheme)
return
}
} else {
port, err = strconv.Atoi(portString)
if err != nil {
log.Info("Error Adding Monitor: " + err.Error())
return
}
}
projectID := service.projectID
providerConfig, _ := monitor.Config.(*endpointmonitorv1alpha1.GCloudConfig)
if providerConfig != nil && len(providerConfig.ProjectId) != 0 {
projectID = providerConfig.ProjectId
}
_, err = service.client.CreateUptimeCheckConfig(service.ctx, &monitoringpb.CreateUptimeCheckConfigRequest{
Parent: "projects/" + projectID,
UptimeCheckConfig: &monitoringpb.UptimeCheckConfig{
DisplayName: monitor.Name,
Resource: &monitoringpb.UptimeCheckConfig_MonitoredResource{
MonitoredResource: &monitoredres.MonitoredResource{
Type: "uptime_url",
Labels: map[string]string{
"host": url.Hostname(),
},
},
},
CheckRequestType: &monitoringpb.UptimeCheckConfig_HttpCheck_{
HttpCheck: &monitoringpb.UptimeCheckConfig_HttpCheck{
Path: url.Path,
Port: int32(port),
UseSsl: url.Scheme == "https",
},
},
},
})
if err != nil {
log.Info("Error Adding Monitor: " + err.Error())
return
}
log.Info("Added monitor for: " + monitor.Name)
}
func (service *MonitorService) Update(monitor models.Monitor) {
uptimeCheckConfig, err := service.client.GetUptimeCheckConfig(service.ctx, &monitoringpb.GetUptimeCheckConfigRequest{Name: monitor.ID})
if err != nil {
log.Info("Error updating Monitor: " + err.Error())
}
url, err := url.Parse(monitor.URL)
if err != nil {
log.Info("Error Adding Monitor: " + err.Error())
return
}
if uptimeCheckConfig.GetMonitoredResource().Labels["host"] != url.Hostname() {
log.Info("Error Adding Monitor: URL Host is immutable")
return
}
portString := url.Port()
var port int
if portString == "" {
if url.Scheme == "http" {
port = 80
} else if url.Scheme == "https" {
port = 443
} else {
log.Info("Error Adding Monitor: unknown protocol " + url.Scheme)
return
}
} else {
port, err = strconv.Atoi(portString)
if err != nil {
log.Info("Error Adding Monitor: " + err.Error())
return
}
}
uptimeCheckConfig.DisplayName = monitor.Name
uptimeCheckConfig.GetHttpCheck().Port = int32(port)
uptimeCheckConfig.GetHttpCheck().Path = url.Path
uptimeCheckConfig, err = service.client.UpdateUptimeCheckConfig(service.ctx, &monitoringpb.UpdateUptimeCheckConfigRequest{
UptimeCheckConfig: uptimeCheckConfig,
})
if err != nil {
log.Info("Error Adding Monitor: " + err.Error())
return
}
log.Info(fmt.Sprintf("Updated Monitor: %v", uptimeCheckConfig))
}
func (service *MonitorService) Remove(monitor models.Monitor) {
err := service.client.DeleteUptimeCheckConfig(service.ctx, &monitoringpb.DeleteUptimeCheckConfigRequest{
Name: monitor.ID,
})
if err != nil {
log.Info("Error deleting Monitor: " + err.Error())
return
}
log.Info("Deleted Monitor: " + monitor.Name)
}
func transformToMonitor(uptimeCheckConfig *monitoringpb.UptimeCheckConfig) (monitor models.Monitor) {
isSsl := uptimeCheckConfig.GetHttpCheck().UseSsl
path := uptimeCheckConfig.GetHttpCheck().Path
port := uptimeCheckConfig.GetHttpCheck().Port
host := uptimeCheckConfig.GetMonitoredResource().Labels["host"]
var scheme string
if isSsl {
scheme = "https"
} else {
scheme = "http"
}
if (isSsl && port != 443) || (!isSsl && port != 80) {
host = host + ":" + strconv.FormatInt(int64(port), 10)
}
url := url.URL{
Scheme: scheme,
Host: host,
Path: path,
}
return models.Monitor{
URL: url.String(),
Name: uptimeCheckConfig.DisplayName,
ID: uptimeCheckConfig.Name,
}
}