// NewActionAgent creates a new ActionAgent and registers all the
// associated services
func NewActionAgent(
tabletAlias topo.TabletAlias,
dbcfgs *dbconfigs.DBConfigs,
mycnf *mysqlctl.Mycnf,
port, securePort int,
overridesFile string,
lockTimeout time.Duration,
) (agent *ActionAgent, err error) {
schemaOverrides := loadSchemaOverrides(overridesFile)
topoServer := topo.GetServer()
mysqld := mysqlctl.NewMysqld("Dba", mycnf, &dbcfgs.Dba, &dbcfgs.Repl)
agent = &ActionAgent{
TopoServer: topoServer,
TabletAlias: tabletAlias,
Mysqld: mysqld,
MysqlDaemon: mysqld,
DBConfigs: dbcfgs,
SchemaOverrides: schemaOverrides,
LockTimeout: lockTimeout,
History: history.New(historyLength),
lastHealthMapCount: stats.NewInt("LastHealthMapCount"),
_healthy: fmt.Errorf("healthcheck not run yet"),
}
// Start the binlog player services, not playing at start.
agent.BinlogPlayerMap = NewBinlogPlayerMap(topoServer, &dbcfgs.Filtered, mysqld)
RegisterBinlogPlayerMap(agent.BinlogPlayerMap)
// try to figure out the mysql port
mysqlPort := mycnf.MysqlPort
if mysqlPort == 0 {
// we don't know the port, try to get it from mysqld
var err error
mysqlPort, err = mysqld.GetMysqlPort()
if err != nil {
log.Warningf("Cannot get current mysql port, will use 0 for now: %v", err)
}
}
if err := agent.Start(mysqlPort, port, securePort); err != nil {
return nil, err
}
// register the RPC services from the agent
agent.registerQueryService()
// start health check if needed
agent.initHeathCheck()
return agent, nil
}
// NewTestActionAgent creates an agent for test purposes. Only a
// subset of features are supported now, but we'll add more over time.
func NewTestActionAgent(ts topo.Server, tabletAlias topo.TabletAlias, port int, mysqlDaemon mysqlctl.MysqlDaemon) (agent *ActionAgent) {
agent = &ActionAgent{
TopoServer: ts,
TabletAlias: tabletAlias,
Mysqld: nil,
MysqlDaemon: mysqlDaemon,
DBConfigs: nil,
SchemaOverrides: nil,
BinlogPlayerMap: nil,
History: history.New(historyLength),
lastHealthMapCount: new(stats.Int),
_healthy: fmt.Errorf("healthcheck not run yet"),
}
if err := agent.Start(0, port, 0); err != nil {
panic(fmt.Errorf("agent.Start(%v) failed: %v", tabletAlias, err))
}
return agent
}