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Expose db.SetMaxOpenConns and allow non MySQL dbs to set conn pool params (#8528)

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* Expose db.SetMaxOpenConns and allow other dbs to set their connection params
* Add note about port exhaustion

Co-Authored-By: guillep2k <18600385+guillep2k@users.noreply.github.com>
This commit is contained in:
zeripath 2019-10-21 22:20:47 +01:00 committed by GitHub
parent 73f8069249
commit d8161ee3fd
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GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 24 additions and 16 deletions
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10
custom/conf/app.ini.sample
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@ -317,10 +317,12 @@ LOG_SQL = true
DB_RETRIES = 10
; Backoff time per DB retry (time.Duration)
DB_RETRY_BACKOFF = 3s
; Max idle database connections on connnection pool, default is 0
MAX_IDLE_CONNS = 0
; Database connection max life time, default is 3s
; Max idle database connections on connnection pool, default is 2
MAX_IDLE_CONNS = 2
; Database connection max life time, default is 0 or 3s mysql (See #6804 & #7071 for reasoning)
CONN_MAX_LIFETIME = 3s
; Database maximum number of open connections, default is 0 meaning no maximum
MAX_OPEN_CONNS = 0
[indexer]
; Issue indexer type, currently support: bleve or db, default is bleve
@ -870,6 +872,6 @@ TOKEN =
QUEUE_TYPE = channel
; Task queue length, available only when `QUEUE_TYPE` is `channel`.
QUEUE_LENGTH = 1000
; Task queue connction string, available only when `QUEUE_TYPE` is `redis`.
; Task queue connection string, available only when `QUEUE_TYPE` is `redis`.
; If there is a password of redis, use `addrs=127.0.0.1:6379 password=123 db=0`.
QUEUE_CONN_STR = "addrs=127.0.0.1:6379 db=0"

8
docs/content/doc/advanced/config-cheat-sheet.en-us.md
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@ -192,8 +192,12 @@ Values containing `#` or `;` must be quoted using `` ` `` or `"""`.
- `LOG_SQL`: **true**: Log the executed SQL.
- `DB_RETRIES`: **10**: How many ORM init / DB connect attempts allowed.
- `DB_RETRY_BACKOFF`: **3s**: time.Duration to wait before trying another ORM init / DB connect attempt, if failure occured.
- `MAX_IDLE_CONNS` **0**: Max idle database connections on connnection pool, default is 0
- `CONN_MAX_LIFETIME` **3s**: Database connection max lifetime
- `MAX_OPEN_CONNS` **0**: Database maximum open connections - default is 0, meaning there is no limit.
- `MAX_IDLE_CONNS` **2**: Max idle database connections on connnection pool, default is 2 - this will be capped to `MAX_OPEN_CONNS`.
- `CONN_MAX_LIFETIME` **0 or 3s**: Sets the maximum amount of time a DB connection may be reused - default is 0, meaning there is no limit (except on MySQL where it is 3s - see #6804 & #7071).
Please see #8540 & #8273 for further discussion of the appropriate values for `MAX_OPEN_CONNS`, `MAX_IDLE_CONNS` & `CONN_MAX_LIFETIME` and their
relation to port exhaustion.
## Indexer (`indexer`)

4
models/models.go
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@ -157,11 +157,9 @@ func SetEngine() (err error) {
// so use log file to instead print to stdout.
x.SetLogger(NewXORMLogger(setting.Database.LogSQL))
x.ShowSQL(setting.Database.LogSQL)
if setting.Database.UseMySQL {
x.SetMaxOpenConns(setting.Database.MaxOpenConns)
x.SetMaxIdleConns(setting.Database.MaxIdleConns)
x.SetConnMaxLifetime(setting.Database.ConnMaxLifetime)
}
return nil
}

10
modules/setting/database.go
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@ -42,12 +42,11 @@ var (
DBConnectRetries int
DBConnectBackoff time.Duration
MaxIdleConns int
MaxOpenConns int
ConnMaxLifetime time.Duration
IterateBufferSize int
}{
Timeout: 500,
MaxIdleConns: 0,
ConnMaxLifetime: 3 * time.Second,
}
)
@ -80,8 +79,13 @@ func InitDBConfig() {
Database.Charset = sec.Key("CHARSET").In("utf8", []string{"utf8", "utf8mb4"})
Database.Path = sec.Key("PATH").MustString(filepath.Join(AppDataPath, "gitea.db"))
Database.Timeout = sec.Key("SQLITE_TIMEOUT").MustInt(500)
Database.MaxIdleConns = sec.Key("MAX_IDLE_CONNS").MustInt(0)
Database.MaxIdleConns = sec.Key("MAX_IDLE_CONNS").MustInt(2)
if Database.UseMySQL {
Database.ConnMaxLifetime = sec.Key("CONN_MAX_LIFE_TIME").MustDuration(3 * time.Second)
} else {
Database.ConnMaxLifetime = sec.Key("CONN_MAX_LIFE_TIME").MustDuration(0)
}
Database.MaxOpenConns = sec.Key("MAX_OPEN_CONNS").MustInt(0)
Database.IterateBufferSize = sec.Key("ITERATE_BUFFER_SIZE").MustInt(50)
Database.LogSQL = sec.Key("LOG_SQL").MustBool(true)