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alert_notification.go
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alert_notification.go
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package sqlstore
import (
"bytes"
"context"
"errors"
"fmt"
"strings"
"time"
"github.com/grafana/grafana/pkg/bus"
m "github.com/grafana/grafana/pkg/models"
)
func init() {
bus.AddHandler("sql", GetAlertNotifications)
bus.AddHandler("sql", CreateAlertNotificationCommand)
bus.AddHandler("sql", UpdateAlertNotification)
bus.AddHandler("sql", DeleteAlertNotification)
bus.AddHandler("sql", GetAlertNotificationsToSend)
bus.AddHandler("sql", GetAllAlertNotifications)
bus.AddHandlerCtx("sql", GetOrCreateAlertNotificationState)
bus.AddHandlerCtx("sql", SetAlertNotificationStateToCompleteCommand)
bus.AddHandlerCtx("sql", SetAlertNotificationStateToPendingCommand)
}
func DeleteAlertNotification(cmd *m.DeleteAlertNotificationCommand) error {
return inTransaction(func(sess *DBSession) error {
sql := "DELETE FROM alert_notification WHERE alert_notification.org_id = ? AND alert_notification.id = ?"
if _, err := sess.Exec(sql, cmd.OrgId, cmd.Id); err != nil {
return err
}
if _, err := sess.Exec("DELETE FROM alert_notification_state WHERE alert_notification_state.org_id = ? AND alert_notification_state.notifier_id = ?", cmd.OrgId, cmd.Id); err != nil {
return err
}
return nil
})
}
func GetAlertNotifications(query *m.GetAlertNotificationsQuery) error {
return getAlertNotificationInternal(query, newSession())
}
func GetAllAlertNotifications(query *m.GetAllAlertNotificationsQuery) error {
results := make([]*m.AlertNotification, 0)
if err := x.Where("org_id = ?", query.OrgId).Find(&results); err != nil {
return err
}
query.Result = results
return nil
}
func GetAlertNotificationsToSend(query *m.GetAlertNotificationsToSendQuery) error {
var sql bytes.Buffer
params := make([]interface{}, 0)
sql.WriteString(`SELECT
alert_notification.id,
alert_notification.org_id,
alert_notification.name,
alert_notification.type,
alert_notification.created,
alert_notification.updated,
alert_notification.settings,
alert_notification.is_default,
alert_notification.send_reminder,
alert_notification.frequency
FROM alert_notification
`)
sql.WriteString(` WHERE alert_notification.org_id = ?`)
params = append(params, query.OrgId)
sql.WriteString(` AND ((alert_notification.is_default = ?)`)
params = append(params, dialect.BooleanStr(true))
if len(query.Ids) > 0 {
sql.WriteString(` OR alert_notification.id IN (?` + strings.Repeat(",?", len(query.Ids)-1) + ")")
for _, v := range query.Ids {
params = append(params, v)
}
}
sql.WriteString(`)`)
results := make([]*m.AlertNotification, 0)
if err := x.SQL(sql.String(), params...).Find(&results); err != nil {
return err
}
query.Result = results
return nil
}
func getAlertNotificationInternal(query *m.GetAlertNotificationsQuery, sess *DBSession) error {
var sql bytes.Buffer
params := make([]interface{}, 0)
sql.WriteString(`SELECT
alert_notification.id,
alert_notification.org_id,
alert_notification.name,
alert_notification.type,
alert_notification.created,
alert_notification.updated,
alert_notification.settings,
alert_notification.is_default,
alert_notification.send_reminder,
alert_notification.frequency
FROM alert_notification
`)
sql.WriteString(` WHERE alert_notification.org_id = ?`)
params = append(params, query.OrgId)
if query.Name != "" || query.Id != 0 {
if query.Name != "" {
sql.WriteString(` AND alert_notification.name = ?`)
params = append(params, query.Name)
}
if query.Id != 0 {
sql.WriteString(` AND alert_notification.id = ?`)
params = append(params, query.Id)
}
}
results := make([]*m.AlertNotification, 0)
if err := sess.SQL(sql.String(), params...).Find(&results); err != nil {
return err
}
if len(results) == 0 {
query.Result = nil
} else {
query.Result = results[0]
}
return nil
}
func CreateAlertNotificationCommand(cmd *m.CreateAlertNotificationCommand) error {
return inTransaction(func(sess *DBSession) error {
existingQuery := &m.GetAlertNotificationsQuery{OrgId: cmd.OrgId, Name: cmd.Name}
err := getAlertNotificationInternal(existingQuery, sess)
if err != nil {
return err
}
if existingQuery.Result != nil {
return fmt.Errorf("Alert notification name %s already exists", cmd.Name)
}
var frequency time.Duration
if cmd.SendReminder {
if cmd.Frequency == "" {
return m.ErrNotificationFrequencyNotFound
}
frequency, err = time.ParseDuration(cmd.Frequency)
if err != nil {
return err
}
}
alertNotification := &m.AlertNotification{
OrgId: cmd.OrgId,
Name: cmd.Name,
Type: cmd.Type,
Settings: cmd.Settings,
SendReminder: cmd.SendReminder,
Frequency: frequency,
Created: time.Now(),
Updated: time.Now(),
IsDefault: cmd.IsDefault,
}
if _, err = sess.MustCols("send_reminder").Insert(alertNotification); err != nil {
return err
}
cmd.Result = alertNotification
return nil
})
}
func UpdateAlertNotification(cmd *m.UpdateAlertNotificationCommand) error {
return inTransaction(func(sess *DBSession) (err error) {
current := m.AlertNotification{}
if _, err = sess.ID(cmd.Id).Get(¤t); err != nil {
return err
}
// check if name exists
sameNameQuery := &m.GetAlertNotificationsQuery{OrgId: cmd.OrgId, Name: cmd.Name}
if err := getAlertNotificationInternal(sameNameQuery, sess); err != nil {
return err
}
if sameNameQuery.Result != nil && sameNameQuery.Result.Id != current.Id {
return fmt.Errorf("Alert notification name %s already exists", cmd.Name)
}
current.Updated = time.Now()
current.Settings = cmd.Settings
current.Name = cmd.Name
current.Type = cmd.Type
current.IsDefault = cmd.IsDefault
current.SendReminder = cmd.SendReminder
if current.SendReminder {
if cmd.Frequency == "" {
return m.ErrNotificationFrequencyNotFound
}
frequency, err := time.ParseDuration(cmd.Frequency)
if err != nil {
return err
}
current.Frequency = frequency
}
sess.UseBool("is_default", "send_reminder")
if affected, err := sess.ID(cmd.Id).Update(current); err != nil {
return err
} else if affected == 0 {
return fmt.Errorf("Could not update alert notification")
}
cmd.Result = ¤t
return nil
})
}
func SetAlertNotificationStateToCompleteCommand(ctx context.Context, cmd *m.SetAlertNotificationStateToCompleteCommand) error {
return inTransactionCtx(ctx, func(sess *DBSession) error {
version := cmd.Version
var current m.AlertNotificationState
sess.ID(cmd.Id).Get(¤t)
newVersion := cmd.Version + 1
sql := `UPDATE alert_notification_state SET
state = ?,
version = ?,
updated_at = ?
WHERE
id = ?`
_, err := sess.Exec(sql, m.AlertNotificationStateCompleted, newVersion, timeNow().Unix(), cmd.Id)
if err != nil {
return err
}
if current.Version != version {
sqlog.Error("notification state out of sync. the notification is marked as complete but has been modified between set as pending and completion.", "notifierId", current.NotifierId)
}
return nil
})
}
func SetAlertNotificationStateToPendingCommand(ctx context.Context, cmd *m.SetAlertNotificationStateToPendingCommand) error {
return withDbSession(ctx, func(sess *DBSession) error {
newVersion := cmd.Version + 1
sql := `UPDATE alert_notification_state SET
state = ?,
version = ?,
updated_at = ?,
alert_rule_state_updated_version = ?
WHERE
id = ? AND
(version = ? OR alert_rule_state_updated_version < ?)`
res, err := sess.Exec(sql,
m.AlertNotificationStatePending,
newVersion,
timeNow().Unix(),
cmd.AlertRuleStateUpdatedVersion,
cmd.Id,
cmd.Version,
cmd.AlertRuleStateUpdatedVersion)
if err != nil {
return err
}
affected, _ := res.RowsAffected()
if affected == 0 {
return m.ErrAlertNotificationStateVersionConflict
}
cmd.ResultVersion = newVersion
return nil
})
}
func GetOrCreateAlertNotificationState(ctx context.Context, cmd *m.GetOrCreateNotificationStateQuery) error {
return inTransactionCtx(ctx, func(sess *DBSession) error {
nj := &m.AlertNotificationState{}
exist, err := getAlertNotificationState(sess, cmd, nj)
// if exists, return it, otherwise create it with default values
if err != nil {
return err
}
if exist {
cmd.Result = nj
return nil
}
notificationState := &m.AlertNotificationState{
OrgId: cmd.OrgId,
AlertId: cmd.AlertId,
NotifierId: cmd.NotifierId,
State: m.AlertNotificationStateUnknown,
UpdatedAt: timeNow().Unix(),
}
if _, err := sess.Insert(notificationState); err != nil {
if dialect.IsUniqueConstraintViolation(err) {
exist, err = getAlertNotificationState(sess, cmd, nj)
if err != nil {
return err
}
if !exist {
return errors.New("Should not happen")
}
cmd.Result = nj
return nil
}
return err
}
cmd.Result = notificationState
return nil
})
}
func getAlertNotificationState(sess *DBSession, cmd *m.GetOrCreateNotificationStateQuery, nj *m.AlertNotificationState) (bool, error) {
return sess.
Where("alert_notification_state.org_id = ?", cmd.OrgId).
Where("alert_notification_state.alert_id = ?", cmd.AlertId).
Where("alert_notification_state.notifier_id = ?", cmd.NotifierId).
Get(nj)
}