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feat: use XORM EngineGroup instead of single Engine connection (#7212)

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Resolves #7207

Add new configuration to make XORM work with a main and replicas database instances. The follow configuration parameters were added:

- `HOST_PRIMARY`
- `HOST_REPLICAS`
- `LOAD_BALANCE_POLICY`. Options:
    - `"WeightRandom"` -> `xorm.WeightRandomPolicy`
    - `"WeightRoundRobin`  -> `WeightRoundRobinPolicy`
    - `"LeastCon"` -> `LeastConnPolicy`
    - `"RoundRobin"` -> `xorm.RoundRobinPolicy()`
    - default: `xorm.RandomPolicy()`
- `LOAD_BALANCE_WEIGHTS`

Co-authored-by: pat-s <patrick.schratz@gmail.com@>
Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/7212
Reviewed-by: Gusted <gusted@noreply.codeberg.org>
Co-authored-by: pat-s <patrick.schratz@gmail.com>
Co-committed-by: pat-s <patrick.schratz@gmail.com>
This commit is contained in:
pat-s 2025-03-30 11:34:02 +00:00 • committed by Gusted
parent a23d0453a3
commit 63a80bf2b9
19 changed files with 463 additions and 129 deletions
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8
models/db/index_test.go
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@ -33,10 +33,11 @@ func getCurrentResourceIndex(ctx context.Context, tableName string, groupID int6
func TestSyncMaxResourceIndex(t *testing.T) {
require.NoError(t, unittest.PrepareTestDatabase())
xe := unittest.GetXORMEngine()
xe, err := unittest.GetXORMEngine()
require.NoError(t, err)
require.NoError(t, xe.Sync(&TestIndex{}))
err := db.SyncMaxResourceIndex(db.DefaultContext, "test_index", 10, 51)
err = db.SyncMaxResourceIndex(db.DefaultContext, "test_index", 10, 51)
require.NoError(t, err)
// sync new max index
@ -88,7 +89,8 @@ func TestSyncMaxResourceIndex(t *testing.T) {
func TestGetNextResourceIndex(t *testing.T) {
require.NoError(t, unittest.PrepareTestDatabase())
xe := unittest.GetXORMEngine()
xe, err := unittest.GetXORMEngine()
require.NoError(t, err)
require.NoError(t, xe.Sync(&TestIndex{}))
// create a new record