func (c *ogonoriConn) Close() error {
ogl.Debugln("** ogoConn.Close")
// Close() must be idempotent
if c.dbc != nil {
err := obinary.CloseDatabase(c.dbc)
c.dbc = nil
return err
}
return nil
}
func testConcurrentClients() {
var (
dbc1, dbc2, dbc3, dbc4 *obinary.DBClient
err error
)
const nclients = 4
runtime.GOMAXPROCS(nclients)
dbc1, err = obinary.NewDBClient(obinary.ClientOptions{})
Ok(err)
defer dbc1.Close()
dbc2, err = obinary.NewDBClient(obinary.ClientOptions{})
Ok(err)
defer dbc2.Close()
dbc3, err = obinary.NewDBClient(obinary.ClientOptions{})
Ok(err)
defer dbc3.Close()
dbc4, err = obinary.NewDBClient(obinary.ClientOptions{})
Ok(err)
defer dbc4.Close()
err = obinary.OpenDatabase(dbc1, dbDocumentName, constants.DocumentDB, "admin", "admin")
Ok(err)
defer obinary.CloseDatabase(dbc1)
err = obinary.OpenDatabase(dbc2, dbDocumentName, constants.DocumentDB, "admin", "admin")
Ok(err)
defer obinary.CloseDatabase(dbc2)
err = obinary.OpenDatabase(dbc3, dbDocumentName, constants.DocumentDB, "admin", "admin")
Ok(err)
defer obinary.CloseDatabase(dbc3)
err = obinary.OpenDatabase(dbc4, dbDocumentName, constants.DocumentDB, "admin", "admin")
Ok(err)
defer obinary.CloseDatabase(dbc4)
/* ---[ queries and insertions concurrently ]--- */
var wg sync.WaitGroup
wg.Add(nclients)
sql := `select count(*) from Cat where caretaker like 'Eva%'`
docs, err := obinary.SQLQuery(dbc1, sql, "")
Ok(err)
beforeCount := toInt(docs[0].GetField("count").Value)
go doQueriesAndInsertions(&wg, dbc1, 1)
go doQueriesAndInsertions(&wg, dbc2, 2)
go doQueriesAndInsertions(&wg, dbc3, 3)
go doQueriesAndInsertions(&wg, dbc4, 4)
wg.Wait()
sql = `select count(*) from Cat where caretaker like 'Eva%'`
docs, err = obinary.SQLQuery(dbc1, sql, "")
Ok(err)
afterCount := toInt(docs[0].GetField("count").Value)
Equals(beforeCount, afterCount)
fmt.Println(afterCount)
}