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Add isolation level db configuration parameter (#33830)

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* add isolation level db configuration parameter

* add isolation_level to default.ini and sample.ini

* add note that only mysql supports isolation levels for now

* mention isolation_level in the documentation

* Update docs/sources/administration/configuration.md

Co-authored-by: achatterjee-grafana <70489351+achatterjee-grafana@users.noreply.github.com>

Co-authored-by: achatterjee-grafana <70489351+achatterjee-grafana@users.noreply.github.com>
This commit is contained in:
Serge Zaitsev 2021-05-10 17:54:13 +02:00 committed by GitHub
parent 59c754823f
commit 7367cfc0a3
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4 changed files with 22 additions and 0 deletions
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6
conf/defaults.ini
View File

@ -105,6 +105,12 @@ log_queries =
# For "mysql", use either "true", "false", or "skip-verify".
ssl_mode = disable
# Database drivers may support different transaction isolation levels.
# Currently, only "mysql" driver supports isolation levels.
# If the value is empty - driver's default isolation level is applied.
# For "mysql" use "READ-UNCOMMITTED", "READ-COMMITTED", "REPEATABLE-READ" or "SERIALIZABLE".
isolation_level =
ca_cert_path =
client_key_path =
client_cert_path =

6
conf/sample.ini
View File

@ -94,6 +94,12 @@
# For "postgres" only, either "disable", "require" or "verify-full"
;ssl_mode = disable
# Database drivers may support different transaction isolation levels.
# Currently, only "mysql" driver supports isolation levels.
# If the value is empty - driver's default isolation level is applied.
# For "mysql" use "READ-UNCOMMITTED", "READ-COMMITTED", "REPEATABLE-READ" or "SERIALIZABLE".
;isolation_level =
;ca_cert_path =
;client_key_path =
;client_cert_path =

4
docs/sources/administration/configuration.md
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@ -329,6 +329,10 @@ Set to `true` to log the sql calls and execution times.
For Postgres, use either `disable`, `require` or `verify-full`.
For MySQL, use either `true`, `false`, or `skip-verify`.
### isolation_level
Only the MySQL driver supports isolation levels in Grafana. In case the value is empty, the driver's default isolation level is applied. Available options are "READ-UNCOMMITTED", "READ-COMMITTED", "REPEATABLE-READ" or "SERIALIZABLE".
### ca_cert_path
The path to the CA certificate to use. On many Linux systems, certs can be found in `/etc/ssl/certs`.

6
pkg/services/sqlstore/sqlstore.go
View File

@ -235,6 +235,10 @@ func (ss *SQLStore) buildConnectionString() (string, error) {
cnnstr += "&tls=custom"
}
if isolation := ss.dbCfg.IsolationLevel; isolation != "" {
cnnstr += "&tx_isolation=" + isolation
}
cnnstr += ss.buildExtraConnectionString('&')
case migrator.Postgres:
addr, err := util.SplitHostPortDefault(ss.dbCfg.Host, "127.0.0.1", "5432")
@ -384,6 +388,7 @@ func (ss *SQLStore) readConfig() error {
ss.dbCfg.ClientCertPath = sec.Key("client_cert_path").String()
ss.dbCfg.ServerCertName = sec.Key("server_cert_name").String()
ss.dbCfg.Path = sec.Key("path").MustString("data/grafana.db")
ss.dbCfg.IsolationLevel = sec.Key("isolation_level").String()
ss.dbCfg.CacheMode = sec.Key("cache_mode").MustString("private")
ss.dbCfg.SkipMigrations = sec.Key("skip_migrations").MustBool()
@ -537,6 +542,7 @@ type DatabaseConfig struct {
ClientCertPath string
ServerCertName string
ConnectionString string
IsolationLevel string
MaxOpenConn int
MaxIdleConn int
ConnMaxLifetime int