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loaders.go
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loaders.go
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package main
import (
"context"
"database/sql"
"encoding/json"
"fmt"
"sort"
"strings"
"time"
cache "github.com/Code-Hex/go-generics-cache"
"github.com/bcc-code/bcc-media-platform/backend/common"
"github.com/bcc-code/bcc-media-platform/backend/items/collection"
"github.com/bcc-code/bcc-media-platform/backend/loaders"
"github.com/bcc-code/bcc-media-platform/backend/members"
"github.com/bcc-code/bcc-media-platform/backend/memorycache"
"github.com/bcc-code/bcc-media-platform/backend/sqlc"
"github.com/bcc-code/mediabank-bridge/log"
"github.com/google/uuid"
"github.com/samber/lo"
"gopkg.in/guregu/null.v4"
)
var roleLoaders = loaders.NewCollection[string, *common.FilteredLoaders](time.Minute)
func getLoadersForRoles(db *sql.DB, queries *sqlc.Queries, collectionLoader *loaders.Loader[int, *common.Collection], roles []string) *common.FilteredLoaders {
sort.Strings(roles)
key := strings.Join(roles, "-")
if ls, ok := roleLoaders.Get(key); ok {
return ls
}
ctx, cancel := context.WithCancel(context.Background())
rq := queries.RoleQueries(roles)
ls := &common.FilteredLoaders{
Key: key,
ShowFilterLoader: loaders.NewFilterLoader(ctx, rq.GetShowIDsWithRoles, loaders.WithName("show-filter")),
ShowUUIDFilterLoader: loaders.NewFilterLoader(ctx, rq.GetShowUUIDsWithRoles, loaders.WithName("show-uuid-filter")),
SeasonFilterLoader: loaders.NewFilterLoader(ctx, rq.GetSeasonIDsWithRoles, loaders.WithName("season-filter")),
EpisodeFilterLoader: loaders.NewFilterLoader(ctx, rq.GetEpisodeIDsWithRoles, loaders.WithName("episode-filter")),
EpisodeUUIDFilterLoader: loaders.NewFilterLoader(ctx, rq.GetEpisodeUUIDsWithRoles, loaders.WithName("episode-uuid-filter")),
SeasonsLoader: loaders.NewRelationLoader(ctx, rq.GetSeasonIDsForShowsWithRoles, loaders.WithName("seasons")),
SectionsLoader: loaders.NewRelationLoader(ctx, rq.GetSectionIDsForPagesWithRoles, loaders.WithName("sections")),
EpisodesLoader: loaders.NewRelationLoader(ctx, rq.GetEpisodeIDsForSeasonsWithRoles, loaders.WithName("episodes")),
TagEpisodesLoader: loaders.NewRelationLoader(ctx, rq.GetEpisodeIDsWithTagIDs, loaders.WithName("tags-episodes")),
CollectionItemsLoader: loaders.NewListLoader(ctx, rq.GetItemsForCollectionsWithRoles, func(i common.CollectionItem) int {
return i.CollectionID
}, loaders.WithName("collection-items")),
CollectionItemIDsLoader: collection.NewCollectionItemLoader(ctx, db, collectionLoader, roles),
CalendarEntryLoader: loaders.New(ctx, rq.GetCalendarEntries, loaders.WithMemoryCache(time.Minute*5)),
StudyTopicFilterLoader: loaders.NewFilterLoader(ctx, rq.GetTopicIDsWithRoles, loaders.WithName("study-topic-filter")),
StudyLessonFilterLoader: loaders.NewFilterLoader(ctx, rq.GetLessonIDsWithRoles, loaders.WithName("study-lesson-filter")),
StudyTaskFilterLoader: loaders.NewFilterLoader(ctx, rq.GetTaskIDsWithRoles, loaders.WithName("study-task-filter")),
StudyLessonsLoader: loaders.NewRelationLoader(ctx, rq.GetLessonIDsForTopics, loaders.WithName("study-lessons")),
StudyTasksLoader: loaders.NewRelationLoader(ctx, rq.GetTaskIDsForLessons, loaders.WithName("study-tasks")),
ContributionsForPersonLoader: loaders.NewListLoader(ctx, rq.GetContributionsForPersonsWithRoles, func(i common.Contribution) uuid.UUID {
return i.PersonID
}, loaders.WithName("person-contributions")),
// Study Relations
StudyLessonEpisodesLoader: loaders.NewRelationLoader(ctx, rq.GetEpisodeIDsForLessons, loaders.WithName("study-lesson-episodes")),
EpisodeStudyLessonsLoader: loaders.NewRelationLoader(ctx, rq.GetLessonIDsForEpisodes, loaders.WithName("episode-study-lessons")),
StudyLessonLinksLoader: loaders.NewRelationLoader(ctx, rq.GetLinkIDsForLessons, loaders.WithName("study-lesson-links")),
LinkStudyLessonsLoader: loaders.NewRelationLoader(ctx, rq.GetLessonIDsForLinks, loaders.WithName("link-study-lessons")),
FAQQuestionsLoader: loaders.NewRelationLoader(ctx, rq.GetQuestionIDsForCategories, loaders.WithName("questions")),
PromptIDsLoader: func(ctx context.Context) ([]uuid.UUID, error) {
return memorycache.GetOrSet(ctx, fmt.Sprintf("promptIDs:roles:%s", key), func(ctx context.Context) ([]uuid.UUID, error) {
return queries.GetPromptIDsForRoles(ctx, roles)
}, cache.WithExpiration(time.Minute*5))
},
FAQCategoryIDsLoader: func(ctx context.Context) ([]uuid.UUID, error) {
return memorycache.GetOrSet(ctx, fmt.Sprintf("categoryIDs:roles:%s", key), func(ctx context.Context) ([]uuid.UUID, error) {
return queries.ListFAQCategoryIDsForRoles(ctx, roles)
}, cache.WithExpiration(time.Minute*5))
},
SurveyQuestionsLoader: loaders.NewRelationLoader(ctx, rq.GetSurveyQuestionIDsForSurveyIDs, loaders.WithName("survey-questions-loader")),
ShortIDsLoader: func(ctx context.Context) ([][]uuid.UUID, error) {
return memorycache.GetOrSet(ctx, fmt.Sprintf("shortIDs:roles:%s", key), func(ctx context.Context) ([][]uuid.UUID, error) {
rows, err := queries.ListSegmentedShortIDsForRoles(ctx, roles)
if err != nil {
return nil, err
}
return lo.Map(rows, func(i sqlc.ListSegmentedShortIDsForRolesRow, _ int) []uuid.UUID {
return i.Ids
}), nil
}, cache.WithExpiration(time.Minute*5))
},
}
// Canceling the context on delete stops janitors nested inside the loaders as well.
roleLoaders.Set(key, ls, loaders.WithOnDelete(cancel))
return ls
}
var profileLoaders = loaders.NewCollection[uuid.UUID, *common.ProfileLoaders](time.Minute)
func getLoadersForProfile(queries *sqlc.Queries, profileID uuid.UUID) *common.ProfileLoaders {
if ls, ok := profileLoaders.Get(profileID); ok {
return ls
}
ctx, cancel := context.WithCancel(context.Background())
profileQueries := queries.ProfileQueries(profileID)
ls := &common.ProfileLoaders{
ProgressLoader: loaders.New(ctx, profileQueries.GetProgressForEpisodes, loaders.WithMemoryCache(time.Second*5), loaders.WithName("progress")),
TaskCompletedLoader: loaders.NewFilterLoader(ctx, func(ctx context.Context, ids []uuid.UUID) ([]uuid.UUID, error) {
return queries.GetAnsweredTasks(ctx, sqlc.GetAnsweredTasksParams{
ProfileID: profileID,
Column2: ids,
})
}, loaders.WithMemoryCache(time.Second*5), loaders.WithName("task-completed")),
AchievementAchievedAtLoader: loaders.New(ctx, profileQueries.GetAchievementsAchievedAt, loaders.WithMemoryCache(time.Second*5), loaders.WithName("achieved-at")),
GetSelectedAlternativesLoader: loaders.New(ctx, profileQueries.GetSelectedAlternatives, loaders.WithMemoryCache(time.Second*1), loaders.WithName("selected-alternatives")),
SeasonDefaultEpisodeLoader: loaders.NewConversionLoader(ctx, profileQueries.DefaultEpisodeIDForSeasonIDs, loaders.WithMemoryCache(time.Second*5), loaders.WithName("season-default-episodes")),
ShowDefaultEpisodeLoader: loaders.NewConversionLoader(ctx, profileQueries.DefaultEpisodeIDForShowIDs, loaders.WithMemoryCache(time.Second*5), loaders.WithName("show-default-episodes")),
TopicDefaultLessonLoader: loaders.NewConversionLoader(ctx, profileQueries.GetDefaultLessonIDForTopicIDs, loaders.WithMemoryCache(time.Second*5), loaders.WithName("topic-default-lessons")),
MediaProgressLoader: loaders.New(ctx, func(ctx context.Context, ids []uuid.UUID) ([]common.MediaProgress, error) {
rows, err := queries.GetMediaProgress(ctx, sqlc.GetMediaProgressParams{
ProfileID: profileID,
ItemIds: ids,
})
if err != nil {
return nil, err
}
return lo.Map(rows, func(i sqlc.GetMediaProgressRow, _ int) common.MediaProgress {
return common.MediaProgress{
ProfileID: i.ProfileID,
MediaID: i.ItemID,
Progress: float64(i.Progress),
}
}), nil
}, loaders.WithKeyFunc(func(i common.MediaProgress) uuid.UUID {
return i.MediaID
}), loaders.WithMemoryCache(time.Second*30)),
}
profileLoaders.Set(profileID, ls, loaders.WithOnDelete(func() {
log.L.Debug().Msg("Clearing profile loader")
ls.TaskCompletedLoader.ClearAll()
ls.AchievementAchievedAtLoader.ClearAll()
ls.ProgressLoader.ClearAll()
ls.GetSelectedAlternativesLoader.ClearAll()
ls.MediaProgressLoader.ClearAll()
ls.SeasonDefaultEpisodeLoader.ClearAll()
ls.ShowDefaultEpisodeLoader.ClearAll()
cancel()
}))
return ls
}
func initBatchLoaders(queries *sqlc.Queries, membersClient *members.Client) *common.BatchLoaders {
ctx := context.Background()
return &common.BatchLoaders{
// App
ApplicationLoader: loaders.New(ctx, queries.GetApplications),
ApplicationIDFromCodeLoader: loaders.NewConversionLoader(ctx, queries.GetApplicationIDsForCodes, loaders.WithName("application-id")),
ApplicationGroupLoader: loaders.New(ctx, queries.GetApplicationGroups),
//Redirect
RedirectLoader: loaders.New(ctx, queries.GetRedirects),
RedirectIDFromCodeLoader: loaders.NewConversionLoader(ctx, queries.GetRedirectIDsForCodes, loaders.WithName("redirect-id")),
// Item
PageLoader: loaders.New(ctx, queries.GetPages),
PageIDFromCodeLoader: loaders.NewConversionLoader(ctx, queries.GetPageIDsForCodes, loaders.WithName("page-id")),
SectionLoader: loaders.New(ctx, queries.GetSections),
ShowLoader: loaders.New(ctx, queries.GetShows),
SeasonLoader: loaders.New(ctx, queries.GetSeasons),
EpisodeLoader: loaders.New(ctx, queries.GetEpisodes),
EpisodeIDFromLegacyProgramIDLoader: loaders.NewConversionLoader(ctx, queries.GetEpisodeIDsForLegacyProgramIDs, loaders.WithName("episode-programid")),
EpisodeIDFromLegacyIDLoader: loaders.NewConversionLoader(ctx, queries.GetEpisodeIDsForLegacyIDs, loaders.WithName("episode-legacyid")),
LinkLoader: loaders.New(ctx, queries.GetLinks),
EventLoader: loaders.New(ctx, queries.GetEvents),
EventEntriesLoader: loaders.NewRelationLoader(ctx, queries.GetEntryIDsForEventIDs, loaders.WithName("event-entries")),
PlaylistLoader: loaders.New(ctx, queries.GetPlaylists, loaders.WithName("playlist-loader"), loaders.WithKeyFunc(func(i common.Playlist) uuid.UUID {
return i.ID
})),
FilesLoader: loaders.NewListLoader(ctx, queries.GetFilesForEpisodes, func(row common.File) int {
return row.EpisodeID
}),
StreamsLoader: loaders.NewListLoader(ctx, queries.GetStreamsForEpisodes, func(row common.Stream) int {
return row.EpisodeID
}),
AssetFilesLoader: loaders.NewListLoader(ctx, queries.GetFilesForAssets, func(row common.File) int {
return row.AssetID
}),
AssetStreamsLoader: loaders.NewListLoader(ctx, queries.GetStreamsForAssets, func(row common.Stream) int {
return row.AssetID
}),
CollectionLoader: loaders.New(ctx, queries.GetCollections),
CollectionItemLoader: loaders.NewListLoader(ctx, queries.GetItemsForCollections, func(row common.CollectionItem) int {
return row.CollectionID
}),
CollectionIDFromSlugLoader: loaders.NewConversionLoader(ctx, queries.GetCollectionIDsForCodes, loaders.WithName("collection-id")),
EpisodeProgressLoader: loaders.NewRelationLoader(ctx, queries.GetEpisodeIDsWithProgress, loaders.WithName("episode-progress")),
EpisodeIDFromUuidLoader: loaders.NewConversionLoader(ctx, queries.GetEpisodeIDsForUuids, loaders.WithName("episode-uuids-ids")),
ShowIDFromUuidLoader: loaders.NewConversionLoader(ctx, queries.GetShowIDsForUuids, loaders.WithName("show-uuids-ids")),
// Permissions
ShowPermissionLoader: loaders.NewCustomLoader(ctx, queries.GetPermissionsForShows, func(i common.Permissions[int]) int {
return i.ItemID
}, loaders.WithName("show-permission"), loaders.WithMemoryCache(time.Second*15)),
SeasonPermissionLoader: loaders.NewCustomLoader(ctx, queries.GetPermissionsForSeasons, func(i common.Permissions[int]) int {
return i.ItemID
}, loaders.WithName("season-permission"), loaders.WithMemoryCache(time.Second*15)),
EpisodePermissionLoader: loaders.NewCustomLoader(ctx, queries.GetPermissionsForEpisodes, func(i common.Permissions[int]) int {
return i.ItemID
}, loaders.WithName("episode-permission"), loaders.WithMemoryCache(time.Second*15)),
PagePermissionLoader: loaders.NewCustomLoader(ctx, queries.GetPermissionsForPages, func(i common.Permissions[int]) int {
return i.ItemID
}, loaders.WithName("page-permission"), loaders.WithMemoryCache(time.Second*15)),
SectionPermissionLoader: loaders.NewCustomLoader(ctx, queries.GetPermissionsForSections, func(i common.Permissions[int]) int {
return i.ItemID
}, loaders.WithName("section-permission"), loaders.WithMemoryCache(time.Second*15)),
MemberLoader: loaders.New(ctx, membersClient.GetMembersByIDs, loaders.WithKeyFunc(func(i members.Member) int {
return i.PersonID
}), loaders.WithName("member-loader")),
OrganizationLoader: loaders.New(ctx, membersClient.GetOrganizationsByIDs, loaders.WithKeyFunc(func(i members.Organization) uuid.UUID {
return i.Uid
})),
SurveyLoader: loaders.New(ctx, queries.GetSurveys, loaders.WithName("survey-loader"), loaders.WithKeyFunc(func(i common.Survey) uuid.UUID {
return i.ID
})),
SurveyQuestionLoader: loaders.New(ctx, queries.GetSurveyQuestions, loaders.WithName("survey-question-loader"), loaders.WithKeyFunc(func(i common.SurveyQuestion) uuid.UUID {
return i.ID
})),
PromptLoader: loaders.New(ctx, mapDbResponseWith(queries.GetPrompts, promptRowToPrompt), loaders.WithKeyFunc(func(i common.Prompt) uuid.UUID {
return i.ID
})),
PersonLoader: loaders.New(ctx, queries.GetPersons, loaders.WithName("person-loader"), loaders.WithKeyFunc(func(i common.Person) uuid.UUID {
return i.ID
})),
SongLoader: loaders.New(ctx, queries.GetSongs, loaders.WithName("song-loader"), loaders.WithKeyFunc(func(i common.Song) uuid.UUID {
return i.ID
})),
TimedMetadataEpisodeIDLoader: loaders.NewConversionLoader(ctx, queries.GetEpisodeIDForTimedMetadatas, loaders.WithMemoryCache(time.Second*30), loaders.WithName("timedmetadata-episode-id")),
TimedMetadataLoader: loaders.New(ctx, queries.GetTimedMetadata, loaders.WithName("timedmetadata-loader"), loaders.WithKeyFunc(func(i common.TimedMetadata) uuid.UUID {
return i.ID
})),
PhraseLoader: loaders.New(ctx, queries.GetPhrases, loaders.WithName("phrases-loader"), loaders.WithKeyFunc(func(i common.Phrase) string {
return i.Key
})),
FAQCategoryLoader: loaders.NewLoader(ctx, queries.GetFAQCategories),
QuestionLoader: loaders.NewLoader(ctx, queries.GetQuestions),
MessageGroupLoader: loaders.NewLoader(ctx, queries.GetMessageGroups),
GameLoader: loaders.New(ctx, queries.GetGames, loaders.WithKeyFunc(func(i common.Game) uuid.UUID {
return i.ID
})),
ShortLoader: loaders.New(ctx, queries.GetShorts, loaders.WithKeyFunc(func(i common.Short) uuid.UUID {
return i.ID
})),
ShortsMediaIDLoader: loaders.NewConversionLoader(ctx, queries.GetMediaIDsForShortIDs, loaders.WithName("shorts-media-id")),
// User Data
StudyTopicLoader: loaders.New(ctx, queries.GetTopics),
StudyLessonLoader: loaders.New(ctx, queries.GetLessons),
StudyTaskLoader: loaders.New(ctx, queries.GetTasks),
StudyQuestionAlternativesLoader: loaders.NewListLoader(ctx, queries.GetQuestionAlternatives, func(alt common.QuestionAlternative) uuid.UUID {
return alt.TaskID
}),
// Achievements
AchievementLoader: loaders.New(ctx, queries.GetAchievements),
AchievementGroupLoader: loaders.New(ctx, queries.GetAchievementGroups),
AchievementsLoader: loaders.NewRelationLoader(ctx, queries.GetAchievementsForProfiles, loaders.WithMemoryCache(time.Second*30), loaders.WithName("achievements")),
UnconfirmedAchievementsLoader: loaders.NewRelationLoader(ctx, queries.GetUnconfirmedAchievementsForProfiles, loaders.WithMemoryCache(time.Second*30), loaders.WithName("unconfirmed-achievements")),
AchievementGroupAchievementsLoader: loaders.NewRelationLoader(ctx, queries.GetAchievementsForGroups, loaders.WithName("group-achievements")),
CompletedTopicsLoader: loaders.NewRelationLoader(ctx, queries.GetCompletedTopics, loaders.WithName("completed-topics")),
CompletedLessonsLoader: loaders.NewRelationLoader(ctx, queries.GetCompletedLessons, loaders.WithName("completed-lessons")),
CompletedTasksLoader: loaders.NewRelationLoader(ctx, queries.GetCompletedTasks, loaders.WithName("completed-tasks")),
CompletedAndLockedTasksLoader: loaders.NewRelationLoader(ctx, queries.GetCompletedAndLockedTasks, loaders.WithMemoryCache(time.Second*1), loaders.WithName("completed-locked-tasks")),
ComputedDataLoader: loaders.NewListLoader(ctx, queries.GetComputedDataForGroups, func(i common.ComputedData) uuid.UUID {
return i.GroupID
}),
UserLoader: loaders.New(ctx, queries.GetUsers, loaders.WithKeyFunc(func(i common.User) string {
return i.PersonID
})),
UserCollectionLoader: loaders.New(ctx, queries.GetUserCollections, loaders.WithKeyFunc(func(i common.UserCollection) uuid.UUID { return i.ID })),
UserCollectionEntryLoader: loaders.New(ctx, queries.GetUserCollectionEntries, loaders.WithKeyFunc(func(i common.UserCollectionEntry) uuid.UUID { return i.ID })),
UserCollectionEntryIDsLoader: loaders.NewRelationLoader(ctx, queries.GetUserCollectionEntryIDsForUserCollectionIDs, loaders.WithName("user-collection-entry-ids")),
ProfileUserCollectionIDsLoader: loaders.NewRelationLoader(ctx, queries.GetUserCollectionIDsForProfileIDs, loaders.WithName("user-collection-ids")),
ProfileMyListCollectionID: loaders.NewConversionLoader(ctx, queries.GetMyListCollectionForProfileIDs, loaders.WithName("user-my-list-id")),
}
}
func promptRowToPrompt(i sqlc.GetPromptsRow, _ int) common.Prompt {
var t = common.LocaleString{}
var d = common.LocaleString{}
_ = json.Unmarshal(i.Title.RawMessage, &t)
_ = json.Unmarshal(i.SecondaryTitle.RawMessage, &d)
t["no"] = null.StringFrom(i.OriginalTitle)
if i.OriginalSecondaryTitle.Valid {
d["no"] = null.StringFrom(i.OriginalSecondaryTitle.String)
}
return common.Prompt{
ID: i.ID,
Title: t,
SecondaryTitle: d,
SurveyID: i.SurveyID,
From: i.From,
To: i.To,
Type: i.Type,
}
}
func mapDbResponseWith[K comparable, T any, R any](factory func(ctx context.Context, keys []K) ([]T, error), mapWith func(T, int) R) func(ctx context.Context, keys []K) ([]R, error) {
return func(ctx context.Context, keys []K) ([]R, error) {
rows, err := factory(ctx, keys)
if err != nil {
return nil, err
}
return lo.Map(rows, mapWith), nil
}
}