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refactor(scanner): optimize update artist's statistics using normalized media_file_artists table (#4641)

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Optimized to use the normalized media_file_artists table instead of parsing JSONB

Signed-off-by: Deluan <deluan@navidrome.org>
This commit is contained in:
Deluan Quintão
2025-11-01 20:25:33 -04:00
committed by GitHub
parent 91fab68578
commit 775626e037
1 changed files with 12 additions and 19 deletions
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31
persistence/artist_repository.go
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@@ -400,23 +400,16 @@ func (r *artistRepository) RefreshStats(allArtists bool) (int64, error) {
// This now calculates per-library statistics and stores them in library_artist.stats
batchUpdateStatsSQL := `
WITH artist_role_counters AS (
SELECT jt.atom AS artist_id,
SELECT mfa.artist_id,
mf.library_id,
substr(
replace(jt.path, '$.', ''),
1,
CASE WHEN instr(replace(jt.path, '$.', ''), '[') > 0
THEN instr(replace(jt.path, '$.', ''), '[') - 1
ELSE length(replace(jt.path, '$.', ''))
END
) AS role,
mfa.role,
count(DISTINCT mf.album_id) AS album_count,
count(mf.id) AS count,
count(DISTINCT mf.id) AS count,
sum(mf.size) AS size
FROM media_file mf
JOIN json_tree(mf.participants) jt ON jt.key = 'id' AND jt.atom IS NOT NULL
WHERE jt.atom IN (ROLE_IDS_PLACEHOLDER) -- Will replace with actual placeholders
GROUP BY jt.atom, mf.library_id, role
FROM media_file_artists mfa
JOIN media_file mf ON mfa.media_file_id = mf.id
WHERE mfa.artist_id IN (ROLE_IDS_PLACEHOLDER) -- Will replace with actual placeholders
GROUP BY mfa.artist_id, mf.library_id, mfa.role
),
artist_total_counters AS (
SELECT mfa.artist_id,
@@ -445,24 +438,24 @@ func (r *artistRepository) RefreshStats(allArtists bool) (int64, error) {
),
combined_counters AS (
SELECT artist_id, library_id, role, album_count, count, size FROM artist_role_counters
UNION
UNION ALL
SELECT artist_id, library_id, role, album_count, count, size FROM artist_total_counters
UNION
UNION ALL
SELECT artist_id, library_id, role, album_count, count, size FROM artist_participant_counter
),
library_artist_counters AS (
SELECT artist_id,
library_id,
json_group_object(
replace(role, '"', ''),
role,
json_object('a', album_count, 'm', count, 's', size)
) AS counters
FROM combined_counters
GROUP BY artist_id, library_id
)
UPDATE library_artist
SET stats = coalesce((SELECT counters FROM library_artist_counters lac
WHERE lac.artist_id = library_artist.artist_id
SET stats = coalesce((SELECT counters FROM library_artist_counters lac
WHERE lac.artist_id = library_artist.artist_id
AND lac.library_id = library_artist.library_id), '{}')
WHERE library_artist.artist_id IN (ROLE_IDS_PLACEHOLDER);` // Will replace with actual placeholders