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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
cmd/migrate.go
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@ -36,7 +36,13 @@ func runMigrate(ctx *cli.Context) error {
log.Info("Log path: %s", setting.Log.RootPath)
log.Info("Configuration file: %s", setting.CustomConf)
if err := db.InitEngineWithMigration(context.Background(), migrations.Migrate); err != nil {
if err := db.InitEngineWithMigration(context.Background(), func(dbEngine db.Engine) error {
masterEngine, err := db.GetMasterEngine(dbEngine)
if err != nil {
return err
}
return migrations.Migrate(masterEngine)
}); err != nil {
log.Fatal("Failed to initialize ORM engine: %v", err)
return err
}