feat(playlist): changes to relation table

Also introduces an abstraction between playlist and dashboard.
This will make it possible to att search, and tag filtering to
playlists without any major refactoring

pkg/api/api.go

@@ -176,7 +176,7 @@ func Register(r *macaron.Macaron) {
 		r.Group("/playlists", func() {
 			r.Get("/", wrap(SearchPlaylists))
 			r.Get("/:id", ValidateOrgPlaylist, wrap(GetPlaylist))
-			r.Get("/:id/dashboards", ValidateOrgPlaylist, wrap(GetPlaylistDashboards))
+			r.Get("/:id/playlistitems", ValidateOrgPlaylist, wrap(GetPlaylistItems))
 			r.Delete("/:id", reqEditorRole, ValidateOrgPlaylist, wrap(DeletePlaylist))
 			r.Put("/:id", reqEditorRole, bind(m.UpdatePlaylistQuery{}), ValidateOrgPlaylist, wrap(UpdatePlaylist))
 			r.Post("/", reqEditorRole, bind(m.CreatePlaylistQuery{}), wrap(CreatePlaylist))

pkg/api/playlist.go

@@ -1,9 +1,12 @@
 package api
 
 import (
+	"errors"
 	"github.com/grafana/grafana/pkg/bus"
+	"github.com/grafana/grafana/pkg/log"
 	"github.com/grafana/grafana/pkg/middleware"
 	m "github.com/grafana/grafana/pkg/models"
+	"strconv"
 )
 
 func ValidateOrgPlaylist(c *middleware.Context) {
@@ -52,19 +55,67 @@ func GetPlaylist(c *middleware.Context) Response {
 		return ApiError(500, "Playlist not found", err)
 	}
 
-	return Json(200, cmd.Result)
+	itemQuery := m.GetPlaylistItemsByIdQuery{PlaylistId: id}
+	if err := bus.Dispatch(&itemQuery); err != nil {
+		log.Warn("itemQuery failed: %v", err)
+		return ApiError(500, "Playlist items not found", err)
+	}
+
+	playlistDTOs := make([]m.PlaylistItemDTO, 0)
+
+	for _, item := range *itemQuery.Result {
+		playlistDTOs = append(playlistDTOs, m.PlaylistItemDTO{
+			Id:         item.Id,
+			PlaylistId: item.PlaylistId,
+			Type:       item.Type,
+			Value:      item.Value,
+			Order:      item.Order,
+		})
+	}
+
+	dto := &m.PlaylistDTO{
+		Id:       cmd.Result.Id,
+		Title:    cmd.Result.Title,
+		Timespan: cmd.Result.Timespan,
+		OrgId:    cmd.Result.OrgId,
+		Items:    playlistDTOs,
+	}
+
+	return Json(200, dto)
 }
 
-func GetPlaylistDashboards(c *middleware.Context) Response {
-	id := c.ParamsInt64(":id")
+func LoadPlaylistItems(id int64) ([]m.PlaylistItem, error) {
+	itemQuery := m.GetPlaylistItemsByIdQuery{PlaylistId: id}
+	if err := bus.Dispatch(&itemQuery); err != nil {
+		log.Warn("itemQuery failed: %v", err)
+		return nil, errors.New("Playlist not found")
+	}
 
-	query := m.GetPlaylistDashboardsQuery{Id: id}
-	if err := bus.Dispatch(&query); err != nil {
-		return ApiError(500, "Playlist not found", err)
+	return *itemQuery.Result, nil
+}
+
+func LoadPlaylistDashboards(id int64) ([]m.PlaylistDashboardDto, error) {
+	playlistItems, _ := LoadPlaylistItems(id)
+
+	dashboardIds := make([]int64, 0)
+
+	for _, i := range playlistItems {
+		dashboardId, _ := strconv.ParseInt(i.Value, 10, 64)
+		dashboardIds = append(dashboardIds, dashboardId)
+	}
+
+	if len(dashboardIds) == 0 {
+		return make([]m.PlaylistDashboardDto, 0), nil
+	}
+
+	dashboardQuery := m.GetPlaylistDashboardsQuery{DashboardIds: dashboardIds}
+	if err := bus.Dispatch(&dashboardQuery); err != nil {
+		log.Warn("dashboardquery failed: %v", err)
+		return nil, errors.New("Playlist not found")
 	}
 
 	dtos := make([]m.PlaylistDashboardDto, 0)
-	for _, item := range *query.Result {
+	for _, item := range *dashboardQuery.Result {
 		dtos = append(dtos, m.PlaylistDashboardDto{
 			Id:    item.Id,
 			Slug:  item.Slug,
@@ -73,7 +124,43 @@ func GetPlaylistDashboards(c *middleware.Context) Response {
 		})
 	}
 
-	return Json(200, dtos)
+	return dtos, nil
+}
+
+func GetPlaylistItems(c *middleware.Context) Response {
+	id := c.ParamsInt64(":id")
+
+	items, err := LoadPlaylistItems(id)
+
+	if err != nil {
+		return ApiError(500, "Could not load playlist items", err)
+	}
+
+	playlistDTOs := make([]m.PlaylistItemDTO, 0)
+
+	for _, item := range items {
+		playlistDTOs = append(playlistDTOs, m.PlaylistItemDTO{
+			Id:         item.Id,
+			PlaylistId: item.PlaylistId,
+			Type:       item.Type,
+			Value:      item.Value,
+			Order:      item.Order,
+			Title:      item.Title,
+		})
+	}
+
+	return Json(200, playlistDTOs)
+}
+
+func GetPlaylistDashboards(c *middleware.Context) Response {
+	id := c.ParamsInt64(":id")
+
+	playlists, err := LoadPlaylistDashboards(id)
+	if err != nil {
+		return ApiError(500, "Could not load dashboards", err)
+	}
+
+	return Json(200, playlists)
 }
 
 func DeletePlaylist(c *middleware.Context) Response {
@@ -103,5 +190,25 @@ func UpdatePlaylist(c *middleware.Context, query m.UpdatePlaylistQuery) Response
 		return ApiError(500, "Failed to save playlist", err)
 	}
 
+	items, err := LoadPlaylistItems(query.Id)
+
+	playlistDTOs := make([]m.PlaylistItemDTO, 0)
+
+	for _, item := range items {
+		playlistDTOs = append(playlistDTOs, m.PlaylistItemDTO{
+			Id:         item.Id,
+			PlaylistId: item.PlaylistId,
+			Type:       item.Type,
+			Value:      item.Value,
+			Order:      item.Order,
+		})
+	}
+
+	if err != nil {
+		return ApiError(500, "Failed to save playlist", err)
+	}
+
+	query.Result.Items = playlistDTOs
+
 	return Json(200, query.Result)
 }

pkg/models/playlist.go

@@ -12,12 +12,27 @@ var (
 
 // Playlist model
 type Playlist struct {
-	Id       int64   `json:"id"`
-	Title    string  `json:"title"`
-	Type     string  `json:"type"`
-	Timespan string  `json:"timespan"`
-	Data     []int64 `json:"data"`
-	OrgId    int64   `json:"-"`
+	Id       int64  `json:"id"`
+	Title    string `json:"title"`
+	Timespan string `json:"timespan"`
+	OrgId    int64  `json:"-"`
+}
+
+type PlaylistDTO struct {
+	Id       int64             `json:"id"`
+	Title    string            `json:"title"`
+	Timespan string            `json:"timespan"`
+	OrgId    int64             `json:"-"`
+	Items    []PlaylistItemDTO `json:"items"`
+}
+
+type PlaylistItemDTO struct {
+	Id         int64  `json:"id"`
+	PlaylistId int64  `json:"playlistid"`
+	Type       string `json:"type"`
+	Title      string `json:"title"`
+	Value      string `json:"value"`
+	Order      int    `json:"order"`
 }
 
 type PlaylistDashboard struct {
@@ -26,6 +41,15 @@ type PlaylistDashboard struct {
 	Title string `json:"title"`
 }
 
+type PlaylistItem struct {
+	Id         int64
+	PlaylistId int64
+	Type       string
+	Value      string
+	Order      int
+	Title      string
+}
+
 func (this PlaylistDashboard) TableName() string {
 	return "dashboard"
 }
@@ -60,9 +84,9 @@ type UpdatePlaylistQuery struct {
 	Title    string
 	Type     string
 	Timespan string
-	Data     []int64
+	Items    []PlaylistItemDTO
 
-	Result *Playlist
+	Result *PlaylistDTO
 }
 
 type CreatePlaylistQuery struct {
@@ -71,6 +95,7 @@ type CreatePlaylistQuery struct {
 	Timespan string
 	Data     []int64
 	OrgId    int64
+	Items    []PlaylistItemDTO
 
 	Result *Playlist
 }
@@ -80,9 +105,14 @@ type GetPlaylistByIdQuery struct {
 	Result *Playlist
 }
 
+type GetPlaylistItemsByIdQuery struct {
+	PlaylistId int64
+	Result     *[]PlaylistItem
+}
+
 type GetPlaylistDashboardsQuery struct {
-	Id     int64
-	Result *PlaylistDashboards
+	DashboardIds []int64
+	Result       *PlaylistDashboards
 }
 
 type DeletePlaylistQuery struct {

pkg/services/sqlstore/dashboard.go

@@ -220,26 +220,6 @@ func DeleteDashboard(cmd *m.DeleteDashboardCommand) error {
 			}
 		}
 
-		var playlists = make(m.Playlists, 0)
-		err = sess.Where("data LIKE ?", fmt.Sprintf("%%%v%%", dashboard.Id)).Find(&playlists)
-		if err != nil {
-			return err
-		}
-
-		for _, playlist := range playlists {
-			filteredData := make([]int64, 0)
-			for _, plDashboardId := range playlist.Data {
-				if plDashboardId != dashboard.Id {
-					filteredData = append(filteredData, plDashboardId)
-				}
-			}
-			playlist.Data = filteredData
-			_, err = sess.Id(playlist.Id).Cols("data").Update(playlist)
-			if err != nil {
-				return err
-			}
-		}
-
 		return nil
 	})
 }

pkg/services/sqlstore/migrations/playlist_mig.go

@@ -8,8 +8,6 @@ func addPlaylistMigrations(mg *Migrator) {
 		Columns: []*Column{
 			{Name: "id", Type: DB_BigInt, IsPrimaryKey: true, IsAutoIncrement: true},
 			{Name: "title", Type: DB_NVarchar, Length: 255, Nullable: false},
-			{Name: "type", Type: DB_NVarchar, Length: 255, Nullable: false},
-			{Name: "data", Type: DB_Text, Nullable: false},
 			{Name: "timespan", Type: DB_NVarchar, Length: 255, Nullable: false},
 			{Name: "org_id", Type: DB_BigInt, Nullable: false},
 		},
@@ -17,4 +15,18 @@ func addPlaylistMigrations(mg *Migrator) {
 
 	// create table
 	mg.AddMigration("create playlist table v1", NewAddTableMigration(playlistV1))
+
+	playlistItemV1 := Table{
+		Name: "playlist_item",
+		Columns: []*Column{
+			{Name: "id", Type: DB_BigInt, IsPrimaryKey: true, IsAutoIncrement: true},
+			{Name: "playlist_id", Type: DB_BigInt, Nullable: false},
+			{Name: "type", Type: DB_NVarchar, Length: 255, Nullable: false},
+			{Name: "value", Type: DB_Text, Nullable: false},
+			{Name: "title", Type: DB_Text, Nullable: false},
+			{Name: "order", Type: DB_Int, Nullable: false},
+		},
+	}
+
+	mg.AddMigration("create playlist item table v1", NewAddTableMigration(playlistItemV1))
 }

pkg/services/sqlstore/playlist.go

@@ -1,6 +1,7 @@
 package sqlstore
 
 import (
+	"fmt"
 	"github.com/go-xorm/xorm"
 
 	"github.com/grafana/grafana/pkg/bus"
@@ -14,6 +15,7 @@ func init() {
 	bus.AddHandler("sql", SearchPlaylists)
 	bus.AddHandler("sql", GetPlaylist)
 	bus.AddHandler("sql", GetPlaylistDashboards)
+	bus.AddHandler("sql", GetPlaylistItem)
 }
 
 func CreatePlaylist(query *m.CreatePlaylistQuery) error {
@@ -21,14 +23,27 @@ func CreatePlaylist(query *m.CreatePlaylistQuery) error {
 
 	playlist := m.Playlist{
 		Title:    query.Title,
-		Type:     query.Type,
-		Data:     query.Data,
 		Timespan: query.Timespan,
 		OrgId:    query.OrgId,
 	}
 
 	_, err = x.Insert(&playlist)
 
+	fmt.Printf("%v", playlist.Id)
+
+	playlistItems := make([]m.PlaylistItem, 0)
+	for _, item := range query.Items {
+		playlistItems = append(playlistItems, m.PlaylistItem{
+			PlaylistId: playlist.Id,
+			Type:       item.Type,
+			Value:      item.Value,
+			Order:      item.Order,
+			Title:      item.Title,
+		})
+	}
+
+	_, err = x.Insert(&playlistItems)
+
 	query.Result = &playlist
 	return err
 }
@@ -39,8 +54,6 @@ func UpdatePlaylist(query *m.UpdatePlaylistQuery) error {
 	playlist := m.Playlist{
 		Id:       query.Id,
 		Title:    query.Title,
-		Type:     query.Type,
-		Data:     query.Data,
 		Timespan: query.Timespan,
 	}
 
@@ -50,9 +63,39 @@ func UpdatePlaylist(query *m.UpdatePlaylistQuery) error {
 		return m.ErrPlaylistNotFound
 	}
 
-	_, err = x.Id(query.Id).Cols("id", "title", "data", "timespan").Update(&playlist)
+	query.Result = &m.PlaylistDTO{
+		Id:       playlist.Id,
+		OrgId:    playlist.OrgId,
+		Title:    playlist.Title,
+		Timespan: playlist.Timespan,
+	}
+
+	_, err = x.Id(query.Id).Cols("id", "title", "timespan").Update(&playlist)
+
+	if err != nil {
+		return err
+	}
+
+	rawSql := "DELETE FROM playlist_item WHERE playlist_id = ?"
+	_, err = x.Exec(rawSql, query.Id)
+
+	if err != nil {
+		return err
+	}
+
+	playlistItems := make([]m.PlaylistItem, 0)
+	for _, item := range query.Items {
+		playlistItems = append(playlistItems, m.PlaylistItem{
+			PlaylistId: playlist.Id,
+			Type:       item.Type,
+			Value:      item.Value,
+			Order:      item.Order,
+			Title:      item.Title,
+		})
+	}
+
+	_, err = x.Insert(&playlistItems)
 
-	query.Result = &playlist
 	return err
 }
 
@@ -63,6 +106,7 @@ func GetPlaylist(query *m.GetPlaylistByIdQuery) error {
 
 	playlist := m.Playlist{}
 	_, err := x.Id(query.Id).Get(&playlist)
+
 	query.Result = &playlist
 
 	return err
@@ -74,9 +118,17 @@ func DeletePlaylist(query *m.DeletePlaylistQuery) error {
 	}
 
 	return inTransaction(func(sess *xorm.Session) error {
-		var rawSql = "DELETE FROM playlist WHERE id = ?"
-		_, err := sess.Exec(rawSql, query.Id)
-		return err
+		var rawPlaylistSql = "DELETE FROM playlist WHERE id = ?"
+		_, err := sess.Exec(rawPlaylistSql, query.Id)
+
+		if err != nil {
+			return err
+		}
+
+		var rawItemSql = "DELETE FROM playlist_item WHERE playlist_id = ?"
+		_, err2 := sess.Exec(rawItemSql, query.Id)
+
+		return err2
 	})
 }
 
@@ -96,27 +148,28 @@ func SearchPlaylists(query *m.PlaylistQuery) error {
 	return err
 }
 
-func GetPlaylistDashboards(query *m.GetPlaylistDashboardsQuery) error {
-	if query.Id == 0 {
+func GetPlaylistItem(query *m.GetPlaylistItemsByIdQuery) error {
+	if query.PlaylistId == 0 {
 		return m.ErrCommandValidationFailed
 	}
 
-	var dashboards = make(m.PlaylistDashboards, 0)
-	var playlist = m.Playlist{}
+	var playlistItems = make([]m.PlaylistItem, 0)
+	err := x.Where("playlist_id=?", query.PlaylistId).Find(&playlistItems)
 
-	hasPlaylist, err := x.Id(query.Id).Get(&playlist)
+	query.Result = &playlistItems
 
-	query.Result = &dashboards
+	return err
+}
 
-	if err != nil {
-		return err
+func GetPlaylistDashboards(query *m.GetPlaylistDashboardsQuery) error {
+	if len(query.DashboardIds) == 0 {
+		return m.ErrCommandValidationFailed
 	}
 
-	if !hasPlaylist || len(playlist.Data) == 0 {
-		return nil
-	}
+	var dashboards = make(m.PlaylistDashboards, 0)
 
-	err = x.In("id", playlist.Data).Find(&dashboards)
+	err := x.In("id", query.DashboardIds).Find(&dashboards)
+	query.Result = &dashboards
 
 	if err != nil {
 		return err