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annotation.go
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annotation.go
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package sqlstore
import (
"bytes"
"errors"
"fmt"
"strings"
"github.com/grafana/grafana/pkg/models"
"github.com/grafana/grafana/pkg/services/annotations"
)
type SqlAnnotationRepo struct {
}
func (r *SqlAnnotationRepo) Save(item *annotations.Item) error {
return inTransaction(func(sess *DBSession) error {
tags := models.ParseTagPairs(item.Tags)
item.Tags = models.JoinTagPairs(tags)
if _, err := sess.Table("annotation").Insert(item); err != nil {
return err
}
if item.Tags != nil {
if tags, err := r.ensureTagsExist(sess, tags); err != nil {
return err
} else {
for _, tag := range tags {
if _, err := sess.Exec("INSERT INTO annotation_tag (annotation_id, tag_id) VALUES(?,?)", item.Id, tag.Id); err != nil {
return err
}
}
}
}
return nil
})
}
// Will insert if needed any new key/value pars and return ids
func (r *SqlAnnotationRepo) ensureTagsExist(sess *DBSession, tags []*models.Tag) ([]*models.Tag, error) {
for _, tag := range tags {
var existingTag models.Tag
// check if it exists
if exists, err := sess.Table("tag").Where("`key`=? AND `value`=?", tag.Key, tag.Value).Get(&existingTag); err != nil {
return nil, err
} else if exists {
tag.Id = existingTag.Id
} else {
if _, err := sess.Table("tag").Insert(tag); err != nil {
return nil, err
}
}
}
return tags, nil
}
func (r *SqlAnnotationRepo) Update(item *annotations.Item) error {
return inTransaction(func(sess *DBSession) error {
var (
isExist bool
err error
)
existing := new(annotations.Item)
if item.Id == 0 && item.RegionId != 0 {
// Update region end time
isExist, err = sess.Table("annotation").Where("region_id=? AND id!=? AND org_id=?", item.RegionId, item.RegionId, item.OrgId).Get(existing)
} else {
isExist, err = sess.Table("annotation").Where("id=? AND org_id=?", item.Id, item.OrgId).Get(existing)
}
if err != nil {
return err
}
if !isExist {
return errors.New("Annotation not found")
}
existing.Epoch = item.Epoch
existing.Text = item.Text
if item.RegionId != 0 {
existing.RegionId = item.RegionId
}
if item.Tags != nil {
if tags, err := r.ensureTagsExist(sess, models.ParseTagPairs(item.Tags)); err != nil {
return err
} else {
if _, err := sess.Exec("DELETE FROM annotation_tag WHERE annotation_id = ?", existing.Id); err != nil {
return err
}
for _, tag := range tags {
if _, err := sess.Exec("INSERT INTO annotation_tag (annotation_id, tag_id) VALUES(?,?)", existing.Id, tag.Id); err != nil {
return err
}
}
}
}
existing.Tags = item.Tags
if _, err := sess.Table("annotation").Id(existing.Id).Cols("epoch", "text", "region_id", "tags").Update(existing); err != nil {
return err
}
return nil
})
}
func (r *SqlAnnotationRepo) Find(query *annotations.ItemQuery) ([]*annotations.ItemDTO, error) {
var sql bytes.Buffer
params := make([]interface{}, 0)
sql.WriteString(`
SELECT
annotation.id,
annotation.epoch as time,
annotation.dashboard_id,
annotation.panel_id,
annotation.new_state,
annotation.prev_state,
annotation.alert_id,
annotation.region_id,
annotation.text,
annotation.tags,
annotation.data,
usr.email,
usr.login,
alert.name as alert_name
FROM annotation
LEFT OUTER JOIN ` + dialect.Quote("user") + ` as usr on usr.id = annotation.user_id
LEFT OUTER JOIN alert on alert.id = annotation.alert_id
`)
sql.WriteString(`WHERE annotation.org_id = ?`)
params = append(params, query.OrgId)
if query.AlertId != 0 {
sql.WriteString(` AND annotation.alert_id = ?`)
params = append(params, query.AlertId)
}
if query.DashboardId != 0 {
sql.WriteString(` AND annotation.dashboard_id = ?`)
params = append(params, query.DashboardId)
}
if query.PanelId != 0 {
sql.WriteString(` AND annotation.panel_id = ?`)
params = append(params, query.PanelId)
}
if query.From > 0 && query.To > 0 {
sql.WriteString(` AND annotation.epoch BETWEEN ? AND ?`)
params = append(params, query.From, query.To)
}
if query.Type == "alert" {
sql.WriteString(` AND annotation.alert_id > 0`)
}
if len(query.Tags) > 0 {
keyValueFilters := []string{}
tags := models.ParseTagPairs(query.Tags)
for _, tag := range tags {
if tag.Value == "" {
keyValueFilters = append(keyValueFilters, "(tag.key = ?)")
params = append(params, tag.Key)
} else {
keyValueFilters = append(keyValueFilters, "(tag.key = ? AND tag.value = ?)")
params = append(params, tag.Key, tag.Value)
}
}
if len(tags) > 0 {
tagsSubQuery := fmt.Sprintf(`
SELECT SUM(1) FROM annotation_tag at
INNER JOIN tag on tag.id = at.tag_id
WHERE at.annotation_id = annotation.id
AND (
%s
)
`, strings.Join(keyValueFilters, " OR "))
sql.WriteString(fmt.Sprintf(" AND (%s) = %d ", tagsSubQuery, len(tags)))
}
}
if query.Limit == 0 {
query.Limit = 10
}
sql.WriteString(fmt.Sprintf(" ORDER BY epoch DESC LIMIT %v", query.Limit))
items := make([]*annotations.ItemDTO, 0)
if err := x.Sql(sql.String(), params...).Find(&items); err != nil {
return nil, err
}
return items, nil
}
func (r *SqlAnnotationRepo) Delete(params *annotations.DeleteParams) error {
return inTransaction(func(sess *DBSession) error {
var (
sql string
annoTagSql string
queryParams []interface{}
)
if params.RegionId != 0 {
annoTagSql = "DELETE FROM annotation_tag WHERE annotation_id IN (SELECT id FROM annotation WHERE region_id = ?)"
sql = "DELETE FROM annotation WHERE region_id = ?"
queryParams = []interface{}{params.RegionId}
} else if params.Id != 0 {
annoTagSql = "DELETE FROM annotation_tag WHERE annotation_id IN (SELECT id FROM annotation WHERE id = ?)"
sql = "DELETE FROM annotation WHERE id = ?"
queryParams = []interface{}{params.Id}
} else {
annoTagSql = "DELETE FROM annotation_tag WHERE annotation_id IN (SELECT id FROM annotation WHERE dashboard_id = ? AND panel_id = ?)"
sql = "DELETE FROM annotation WHERE dashboard_id = ? AND panel_id = ?"
queryParams = []interface{}{params.DashboardId, params.PanelId}
}
if _, err := sess.Exec(annoTagSql, queryParams...); err != nil {
return err
}
if _, err := sess.Exec(sql, queryParams...); err != nil {
return err
}
return nil
})
}