// MoveUp attempts to move an instance up the topology
func (this *HttpAPI) MoveUp(params martini.Params, r render.Render) {
instanceKey, err := this.getInstanceKey(params["host"], params["port"])
if err != nil {
r.JSON(200, &APIResponse{Code: ERROR, Message: err.Error()})
return
}
instance, err := inst.MoveUp(&instanceKey)
if err != nil {
r.JSON(200, &APIResponse{Code: ERROR, Message: err.Error()})
return
}
r.JSON(200, &APIResponse{Code: OK, Message: "Instance moved up", Details: instance})
}
func (s *TestSuite) TestMoveBelowAndBack(c *C) {
clearTestMaintenance()
// become child
slave1, err := inst.MoveBelow(&slave1Key, &slave2Key)
c.Assert(err, IsNil)
c.Assert(slave1.MasterKey.Equals(&slave2Key), Equals, true)
c.Assert(slave1.SlaveRunning(), Equals, true)
// And back; keep topology intact
slave1, _ = inst.MoveUp(&slave1Key)
slave2, _ := inst.ReadTopologyInstance(&slave2Key)
c.Assert(inst.InstancesAreSiblings(slave1, slave2), Equals, true)
c.Assert(slave1.SlaveRunning(), Equals, true)
}
func (s *TestSuite) TestMoveBelowAndBackComplex(c *C) {
clearTestMaintenance()
// become child
slave1, _ := inst.MoveBelow(&slave1Key, &slave2Key)
c.Assert(slave1.MasterKey.Equals(&slave2Key), Equals, true)
c.Assert(slave1.SlaveRunning(), Equals, true)
// Now let's have fun. Stop slave2 (which is now parent of slave1), execute queries on master,
// move s1 back under master, start all, verify queries.
_, err := inst.StopSlave(&slave2Key)
c.Assert(err, IsNil)
randValue := rand.Int()
_, err = inst.ExecInstance(&masterKey, `replace into orchestrator_test.test_table (name, value) values ('TestMoveBelowAndBackComplex', ?)`, randValue)
c.Assert(err, IsNil)
master, err := inst.ReadTopologyInstance(&masterKey)
c.Assert(err, IsNil)
// And back; keep topology intact
slave1, err = inst.MoveUp(&slave1Key)
c.Assert(err, IsNil)
_, err = inst.MasterPosWait(&slave1Key, &master.SelfBinlogCoordinates)
c.Assert(err, IsNil)
slave2, err := inst.ReadTopologyInstance(&slave2Key)
c.Assert(err, IsNil)
_, err = inst.MasterPosWait(&slave2Key, &master.SelfBinlogCoordinates)
c.Assert(err, IsNil)
// Now check for value!
var value1, value2 int
inst.ScanInstanceRow(&slave1Key, `select value from orchestrator_test.test_table where name='TestMoveBelowAndBackComplex'`, &value1)
inst.ScanInstanceRow(&slave2Key, `select value from orchestrator_test.test_table where name='TestMoveBelowAndBackComplex'`, &value2)
c.Assert(inst.InstancesAreSiblings(slave1, slave2), Equals, true)
c.Assert(value1, Equals, randValue)
c.Assert(value2, Equals, randValue)
}
// Cli initiates a command line interface, executing requested command.
func Cli(command string, instance string, sibling string, owner string, reason string) {
instanceKey, err := inst.ParseInstanceKey(instance)
if err != nil {
instanceKey = nil
}
siblingKey, err := inst.ParseInstanceKey(sibling)
if err != nil {
siblingKey = nil
}
if len(owner) == 0 {
// get os username as owner
usr, err := user.Current()
if err != nil {
log.Fatale(err)
}
owner = usr.Username
}
if len(command) == 0 {
log.Fatal("expected command (-c) (discover|forget|continuous|move-up|move-below|begin-maintenance|end-maintenance|clusters|topology|resolve)")
}
switch command {
case "move-up":
{
if instanceKey == nil {
log.Fatal("Cannot deduce instance:", instance)
}
_, err := inst.MoveUp(instanceKey)
if err != nil {
log.Errore(err)
}
}
case "move-below":
{
if instanceKey == nil {
log.Fatal("Cannot deduce instance:", instance)
}
if siblingKey == nil {
log.Fatal("Cannot deduce sibling:", sibling)
}
_, err := inst.MoveBelow(instanceKey, siblingKey)
if err != nil {
log.Errore(err)
}
}
case "discover":
{
if instanceKey == nil {
log.Fatal("Cannot deduce instance:", instance)
}
orchestrator.StartDiscovery(*instanceKey)
}
case "forget":
{
if instanceKey == nil {
log.Fatal("Cannot deduce instance:", instance)
}
inst.ForgetInstance(instanceKey)
}
case "begin-maintenance":
{
if instanceKey == nil {
log.Fatal("Cannot deduce instance:", instance)
}
if owner == "" {
log.Fatal("--owner option required")
}
if reason == "" {
log.Fatal("--reason option required")
}
maintenanceKey, err := inst.BeginMaintenance(instanceKey, owner, reason)
if err == nil {
log.Infof("Maintenance key: %+v", maintenanceKey)
}
if err != nil {
log.Errore(err)
}
}
case "end-maintenance":
{
if instanceKey == nil {
log.Fatal("Cannot deduce instance:", instance)
}
err := inst.EndMaintenanceByInstanceKey(instanceKey)
if err != nil {
log.Errore(err)
}
}
case "clusters":
{
clusters, err := inst.ReadClusters()
if err != nil {
log.Errore(err)
} else {
fmt.Println(strings.Join(clusters, "\n"))
}
}
case "topology":
{
if instanceKey == nil {
log.Fatal("Cannot deduce instance:", instance)
}
output, err := inst.AsciiTopology(instance)
if err != nil {
log.Errore(err)
} else {
fmt.Println(output)
}
}
case "continuous":
{
orchestrator.ContinuousDiscovery()
}
case "resolve":
{
if instanceKey == nil {
log.Fatal("Cannot deduce instance:", instance)
}
if conn, err := net.Dial("tcp", instanceKey.DisplayString()); err == nil {
conn.Close()
} else {
log.Fatale(err)
}
fmt.Println(instanceKey.DisplayString())
}
default:
log.Fatal("Unknown command:", command)
}
}