#sqlt
sqlt is a wrapper package for jmoiron/sqlx
this wrapper build based on tsenart/nap master-slave configuration with some modification
since this package is just a wrapper, you can use it 100% like sqlx, but with some differences
to connect to database, you need an appended connection string with ; delimeter, but there is some notes:
- the first connection will always be considered as
masterconnection - another connection will be considered as
slave
databaseCon := "con1;" + "con2;" + "con3"
db, err := sqlt.Open("postgres", databaseCon)or
databaseCon := "con1"
db, err := sqlt.Open("postgres", databaseCon)for a complete sqlx features, you can use this:
err := db.Slave().Query(&struct, query)
err := db.Master().Query(&struct, query)but if you don't want to state master or slave, you can use it like this:
err := db.Query(&struct, query)preapre and preparex for sql and sqlx are supported
use preparex to enable scanStruct
statement := db.Prepare(query)
rows, err := statement.Query(param)
row := statement.QueryRows(param)statement := db.Preparex(query)
rows, err := statement.Query(param)
row := statement.QueryRows(param)Use DoHeartbeat to auto-reconnect/watch your database connection.
databaseCon := "con1;" + "con2;" + "con3"
db, err := sqlt.Open("postgres", databaseCon)
if err != nil {
return err
}
//this will automatically ping the database and watch the connection
db.DoHeartBeat()You can also get the database status in JSON, for example:
databaseCon := "con1;" + "con2;" + "con3"
db, err := sqlt.OpenWithName("postgres", databaseCon, "order")
if err != nil {
return err
}
//this will automatically ping the database and watch the connection
db.DoHeartBeat()
//this will return database status in JSON
status, _ := db.GetStatus()JSON output:
{
"order": {
"db_list": [
{
"name": "master",
"connected": true,
"last_active": "Mon, 04 Jul 2016 11:25:14 WIB",
"error": null
},
{
"name": "slave-1",
"connected": true,
"last_active": "Mon, 04 Jul 2016 11:25:14 WIB",
"error": null
},
{
"name": "slave-2",
"connected": true,
"last_active": "Mon, 04 Jul 2016 11:25:14 WIB",
"error": null
}
],
"heartbeat": true,
"last_beat": "Mon, 04 Jul 2016 11:25:14 WIB"
}
}3rd party references: