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package notifiers
import (
"fmt"
"io/ioutil"
"os"
"path/filepath"
"strings"
"github.com/grafana/grafana/pkg/log"
m "github.com/grafana/grafana/pkg/models"
"github.com/grafana/grafana/pkg/services/alerting"
"gopkg.in/yaml.v2"
)
type configReader struct {
log log.Logger
}
func (cr *configReader) readConfig(path string) ([]*notificationsAsConfig, error) {
var notifications []*notificationsAsConfig
cr.log.Debug("Looking for alert notification provisioning files", "path", path)
files, err := ioutil.ReadDir(path)
if err != nil {
cr.log.Error("Can't read alert notification provisioning files from directory", "path", path, "error", err)
return notifications, nil
}
for _, file := range files {
if strings.HasSuffix(file.Name(), ".yaml") || strings.HasSuffix(file.Name(), ".yml") {
cr.log.Debug("Parsing alert notifications provisioning file", "path", path, "file.Name", file.Name())
notifs, err := cr.parseNotificationConfig(path, file)
if err != nil {
return nil, err
}
if notifs != nil {
notifications = append(notifications, notifs)
}
}
}
cr.log.Debug("Validating alert notifications")
if err = validateRequiredField(notifications); err != nil {
return nil, err
}
checkOrgIdAndOrgName(notifications)
err = validateNotifications(notifications)
if err != nil {
return nil, err
}
return notifications, nil
}
func (cr *configReader) parseNotificationConfig(path string, file os.FileInfo) (*notificationsAsConfig, error) {
filename, _ := filepath.Abs(filepath.Join(path, file.Name()))
yamlFile, err := ioutil.ReadFile(filename)
if err != nil {
return nil, err
}
var cfg *notificationsAsConfig
err = yaml.Unmarshal(yamlFile, &cfg)
if err != nil {
return nil, err
}
return cfg.mapToNotificationFromConfig(), nil
}
func checkOrgIdAndOrgName(notifications []*notificationsAsConfig) {
for i := range notifications {
for _, notification := range notifications[i].Notifications {
if notification.OrgId < 1 {
if notification.OrgName == "" {
notification.OrgId = 1
} else {
notification.OrgId = 0
}
}
}
for _, notification := range notifications[i].DeleteNotifications {
if notification.OrgId < 1 {
if notification.OrgName == "" {
notification.OrgId = 1
} else {
notification.OrgId = 0
}
}
}
}
}
func validateRequiredField(notifications []*notificationsAsConfig) error {
for i := range notifications {
var errStrings []string
for index, notification := range notifications[i].Notifications {
if notification.Name == "" {
errStrings = append(
errStrings,
fmt.Sprintf("Added alert notification item %d in configuration doesn't contain required field name", index+1),
)
}
if notification.Uid == "" {
errStrings = append(
errStrings,
fmt.Sprintf("Added alert notification item %d in configuration doesn't contain required field uid", index+1),
)
}
}
for index, notification := range notifications[i].DeleteNotifications {
if notification.Name == "" {
errStrings = append(
errStrings,
fmt.Sprintf("Deleted alert notification item %d in configuration doesn't contain required field name", index+1),
)
}
if notification.Uid == "" {
errStrings = append(
errStrings,
fmt.Sprintf("Deleted alert notification item %d in configuration doesn't contain required field uid", index+1),
)
}
}
if len(errStrings) != 0 {
return fmt.Errorf(strings.Join(errStrings, "\n"))
}
}
return nil
}
func validateNotifications(notifications []*notificationsAsConfig) error {
for i := range notifications {
if notifications[i].Notifications == nil {
continue
}
for _, notification := range notifications[i].Notifications {
_, err := alerting.InitNotifier(&m.AlertNotification{
Name: notification.Name,
Settings: notification.SettingsToJson(),
Type: notification.Type,
})
if err != nil {
return err
}
}
}
return nil
}
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