func AutoCluster(w rest.ResponseWriter, r *rest.Request) {
dbConn, err := util.GetConnection(CLUSTERADMIN_DB)
if err != nil {
logit.Error.Println("BackupNow: error " + err.Error())
rest.Error(w, err.Error(), 400)
return
}
defer dbConn.Close()
logit.Info.Println("AUTO CLUSTER PROFILE starts")
logit.Info.Println("AutoCluster: start AutoCluster")
params := AutoClusterInfo{}
err = r.DecodeJsonPayload(¶ms)
if err != nil {
logit.Error.Println("AutoCluster: error in decode" + err.Error())
rest.Error(w, err.Error(), http.StatusInternalServerError)
return
}
err = secimpl.Authorize(dbConn, params.Token, "perm-cluster")
if err != nil {
logit.Error.Println("AutoCluster: authorize error " + err.Error())
rest.Error(w, err.Error(), http.StatusUnauthorized)
return
}
if params.Name == "" {
logit.Error.Println("AutoCluster: error in Name")
rest.Error(w, "cluster name required", http.StatusBadRequest)
return
}
if params.ClusterType == "" {
logit.Error.Println("AutoCluster: error in ClusterType")
rest.Error(w, "ClusterType name required", http.StatusBadRequest)
return
}
if params.ProjectID == "" {
logit.Error.Println("AutoCluster: error in ProjectID")
rest.Error(w, "ProjectID name required", http.StatusBadRequest)
return
}
if params.ClusterProfile == "" {
logit.Error.Println("AutoCluster: error in ClusterProfile")
rest.Error(w, "ClusterProfile name required", http.StatusBadRequest)
return
}
logit.Info.Println("AutoCluster: Name=" + params.Name + " ClusterType=" + params.ClusterType + " Profile=" + params.ClusterProfile + " ProjectID=" + params.ProjectID)
//create cluster definition
dbcluster := admindb.Cluster{"", params.ProjectID, params.Name, params.ClusterType, "uninitialized", "", make(map[string]string)}
var ival int
ival, err = admindb.InsertCluster(dbConn, dbcluster)
clusterID := strconv.Itoa(ival)
dbcluster.ID = clusterID
logit.Info.Println(clusterID)
if err != nil {
logit.Error.Println("AutoCluster:" + err.Error())
rest.Error(w, "Insert Cluster error:"+err.Error(), http.StatusBadRequest)
return
}
//lookup profile
profile, err2 := getClusterProfileInfo(dbConn, params.ClusterProfile)
if err2 != nil {
logit.Error.Println("AutoCluster: error-" + err2.Error())
rest.Error(w, "AutoCluster error"+err2.Error(), http.StatusBadRequest)
return
}
var masterServer admindb.Server
var chosenServers []admindb.Server
if profile.Algo == "round-robin" {
masterServer, chosenServers, err2 = roundRobin(dbConn, profile)
} else {
logit.Error.Println("AutoCluster: error-unsupported algorithm request")
rest.Error(w, "AutoCluster error: unsupported algorithm", http.StatusBadRequest)
return
}
//create master container
dockermaster := cpmserverapi.DockerRunRequest{}
dockermaster.Image = CPM_NODE_IMAGE
dockermaster.ContainerName = params.Name + "-master"
dockermaster.ServerID = masterServer.ID
dockermaster.ProjectID = params.ProjectID
dockermaster.Standalone = "false"
if err != nil {
logit.Error.Println("AutoCluster: error-create master node " + err.Error())
rest.Error(w, "AutoCluster error"+err.Error(), http.StatusBadRequest)
return
}
// provision the master
err2 = provisionImpl(dbConn, &dockermaster, profile.MasterProfile, false)
if err2 != nil {
logit.Error.Println("AutoCluster: error-provision master " + err2.Error())
rest.Error(w, "AutoCluster error"+err2.Error(), http.StatusBadRequest)
return
}
logit.Info.Println("AUTO CLUSTER PROFILE master container created")
var node admindb.Container
//update node with cluster iD
node, err2 = admindb.GetContainerByName(dbConn, dockermaster.ContainerName)
if err2 != nil {
logit.Error.Println("AutoCluster: error-get node by name " + err2.Error())
rest.Error(w, "AutoCluster error"+err2.Error(), http.StatusBadRequest)
return
}
node.ClusterID = clusterID
node.Role = "master"
err2 = admindb.UpdateContainer(dbConn, node)
if err2 != nil {
logit.Error.Println("AutoCluster: error-update standby node " + err2.Error())
rest.Error(w, "AutoCluster error"+err2.Error(), http.StatusBadRequest)
return
}
//create standby containers
var count int
count, err2 = strconv.Atoi(profile.Count)
if err2 != nil {
logit.Error.Println(err2.Error())
rest.Error(w, err2.Error(), http.StatusBadRequest)
return
}
dockerstandby := make([]cpmserverapi.DockerRunRequest, count)
for i := 0; i < count; i++ {
logit.Info.Println("working on standby ....")
// loop - provision standby
dockerstandby[i].ServerID = chosenServers[i].ID
dockerstandby[i].ProjectID = params.ProjectID
dockerstandby[i].Image = CPM_NODE_IMAGE
dockerstandby[i].ContainerName = params.Name + "-" + STANDBY + "-" + strconv.Itoa(i)
dockerstandby[i].Standalone = "false"
err2 = provisionImpl(dbConn, &dockerstandby[i], profile.StandbyProfile, true)
if err2 != nil {
logit.Error.Println("AutoCluster: error-provision master " + err2.Error())
rest.Error(w, "AutoCluster error"+err2.Error(), http.StatusBadRequest)
return
}
//update node with cluster iD
node, err2 = admindb.GetContainerByName(dbConn, dockerstandby[i].ContainerName)
if err2 != nil {
logit.Error.Println("AutoCluster: error-get node by name " + err2.Error())
rest.Error(w, "AutoCluster error"+err2.Error(), http.StatusBadRequest)
return
}
node.ClusterID = clusterID
node.Role = STANDBY
err2 = admindb.UpdateContainer(dbConn, node)
if err2 != nil {
logit.Error.Println("AutoCluster: error-update standby node " + err2.Error())
rest.Error(w, "AutoCluster error"+err2.Error(), http.StatusBadRequest)
return
}
}
logit.Info.Println("AUTO CLUSTER PROFILE standbys created")
//create pgpool container
// provision
dockerpgpool := cpmserverapi.DockerRunRequest{}
dockerpgpool.ContainerName = params.Name + "-pgpool"
dockerpgpool.Image = CPM_PGPOOL_IMAGE
dockerpgpool.ServerID = chosenServers[count].ID
dockerpgpool.ProjectID = params.ProjectID
dockerpgpool.Standalone = "false"
err2 = provisionImpl(dbConn, &dockerpgpool, profile.StandbyProfile, true)
if err2 != nil {
logit.Error.Println("AutoCluster: error-provision pgpool " + err2.Error())
rest.Error(w, "AutoCluster error"+err2.Error(), http.StatusBadRequest)
return
}
logit.Info.Println("AUTO CLUSTER PROFILE pgpool created")
//update node with cluster ID
node, err2 = admindb.GetContainerByName(dbConn, dockerpgpool.ContainerName)
if err2 != nil {
logit.Error.Println("AutoCluster: error-get pgpool node by name " + err2.Error())
rest.Error(w, "AutoCluster error"+err2.Error(), http.StatusBadRequest)
return
}
node.ClusterID = clusterID
node.Role = "pgpool"
err2 = admindb.UpdateContainer(dbConn, node)
if err2 != nil {
logit.Error.Println("AutoCluster: error-update pgpool node " + err2.Error())
rest.Error(w, "AutoCluster error"+err2.Error(), http.StatusBadRequest)
return
}
//init the master DB
// provision the master
err2 = provisionImplInit(dbConn, &dockermaster, profile.MasterProfile, false)
if err2 != nil {
logit.Error.Println("AutoCluster: error-provisionInit master " + err2.Error())
rest.Error(w, "AutoCluster error"+err2.Error(), http.StatusBadRequest)
return
}
//make sure every node is ready
err2 = waitTillAllReady(dockermaster, dockerpgpool, dockerstandby)
if err2 != nil {
logit.Error.Println("cluster members not responding in time")
rest.Error(w, "AutoCluster error"+err2.Error(), http.StatusBadRequest)
return
}
//configure cluster
// ConfigureCluster
logit.Info.Println("AUTO CLUSTER PROFILE configure cluster ")
err2 = configureCluster(dbConn, dbcluster, true)
if err2 != nil {
logit.Error.Println("AutoCluster: error-configure cluster " + err2.Error())
rest.Error(w, "AutoCluster error"+err2.Error(), http.StatusBadRequest)
return
}
logit.Info.Println("AUTO CLUSTER PROFILE done")
w.WriteHeader(http.StatusOK)
status := SimpleStatus{}
status.Status = "OK"
w.WriteJson(&status)
}
func AdminFailover(w rest.ResponseWriter, r *rest.Request) {
dbConn, err := util.GetConnection(CLUSTERADMIN_DB)
if err != nil {
logit.Error.Println("BackupNow: error " + err.Error())
rest.Error(w, err.Error(), 400)
return
}
defer dbConn.Close()
err = secimpl.Authorize(dbConn, r.PathParam("Token"), "perm-cluster")
if err != nil {
logit.Error.Println("AdminFailover: authorize error " + err.Error())
rest.Error(w, err.Error(), http.StatusUnauthorized)
return
}
ID := r.PathParam("ID")
if ID == "" {
logit.Error.Println("AdminFailover: node ID required error")
rest.Error(w, "node ID required", http.StatusBadRequest)
return
}
//dbNode is the standby node we are going to fail over and
//make the new master in the cluster
var dbNode admindb.Container
dbNode, err = admindb.GetContainer(dbConn, ID)
if err != nil {
logit.Error.Println("AdminFailover:" + err.Error())
rest.Error(w, err.Error(), http.StatusBadRequest)
return
}
cluster, err := admindb.GetCluster(dbConn, dbNode.ClusterID)
if err != nil {
logit.Error.Println("AdminFailover:" + err.Error())
rest.Error(w, err.Error(), http.StatusBadRequest)
return
}
var failoverResp cpmcontainerapi.FailoverResponse
failoverResp, err = cpmcontainerapi.FailoverClient(dbNode.Name)
if err != nil {
logit.Error.Println("AdminFailover: fail-over error " + err.Error())
rest.Error(w, err.Error(), http.StatusBadRequest)
return
}
logit.Info.Println("AdminFailover: fail-over output " + failoverResp.Output)
//update the old master to standalone role
oldMaster := admindb.Container{}
oldMaster, err = admindb.GetContainerMaster(dbConn, dbNode.ClusterID)
if err != nil {
logit.Error.Println("AdminFailover:" + err.Error())
rest.Error(w, err.Error(), http.StatusBadRequest)
return
}
oldMaster.Role = "standalone"
oldMaster.ClusterID = "-1"
err = admindb.UpdateContainer(dbConn, oldMaster)
if err != nil {
logit.Error.Println("AdminFailover:" + err.Error())
rest.Error(w, err.Error(), http.StatusBadRequest)
return
}
//update the failover node to master role
dbNode.Role = "master"
err = admindb.UpdateContainer(dbConn, dbNode)
if err != nil {
logit.Error.Println("AdminFailover:" + err.Error())
rest.Error(w, err.Error(), http.StatusBadRequest)
return
}
//stop pg on the old master
//params.IPAddress1 = oldMaster.IPAddress
var stopPGResp cpmcontainerapi.StopPGResponse
stopPGResp, err = cpmcontainerapi.StopPGClient(oldMaster.Name)
if err != nil {
logit.Error.Println("AdminFailover: " + err.Error() + stopPGResp.Output)
rest.Error(w, err.Error(), http.StatusBadRequest)
return
}
err = configureCluster(dbConn, cluster, false)
if err != nil {
logit.Error.Println(err.Error())
rest.Error(w, err.Error(), http.StatusBadRequest)
return
}
w.WriteHeader(http.StatusOK)
status := SimpleStatus{}
status.Status = "OK"
w.WriteJson(&status)
return
}
func EventJoinCluster(w rest.ResponseWriter, r *rest.Request) {
dbConn, err := util.GetConnection(CLUSTERADMIN_DB)
if err != nil {
logit.Error.Println("BackupNow: error " + err.Error())
rest.Error(w, err.Error(), 400)
return
}
defer dbConn.Close()
err = secimpl.Authorize(dbConn, r.PathParam("Token"), "perm-cluster")
if err != nil {
logit.Error.Println("EventJoinCluster: authorize error " + err.Error())
rest.Error(w, err.Error(), http.StatusUnauthorized)
return
}
IDList := r.PathParam("IDList")
if IDList == "" {
logit.Error.Println("EventJoinCluster: error IDList required")
rest.Error(w, "IDList required", http.StatusBadRequest)
return
} else {
logit.Info.Println("EventJoinCluster: IDList=[" + IDList + "]")
}
MasterID := r.PathParam("MasterID")
if MasterID == "" {
logit.Error.Println("EventJoinCluster: error MasterID required")
rest.Error(w, "MasterID required", http.StatusBadRequest)
return
} else {
logit.Info.Println("EventJoinCluster: MasterID=[" + MasterID + "]")
}
ClusterID := r.PathParam("ClusterID")
if ClusterID == "" {
logit.Error.Println("EventJoinCluster: error ClusterID required")
rest.Error(w, "node ClusterID required", http.StatusBadRequest)
return
} else {
logit.Info.Println("EventJoinCluster: ClusterID=[" + ClusterID + "]")
}
var idList = strings.Split(IDList, "_")
i := 0
pgpoolCount := 0
origDBNode := admindb.Container{}
for i = range idList {
if idList[i] != "" {
logit.Info.Println("EventJoinCluster: idList[" + strconv.Itoa(i) + "]=" + idList[i])
origDBNode, err = admindb.GetContainer(dbConn, idList[i])
if err != nil {
logit.Error.Println("EventJoinCluster:" + err.Error())
rest.Error(w, err.Error(), http.StatusBadRequest)
return
}
//update the node to be in the cluster
origDBNode.ClusterID = ClusterID
if origDBNode.Image == CPM_NODE_IMAGE {
origDBNode.Role = STANDBY
} else {
origDBNode.Role = "pgpool"
pgpoolCount++
}
if pgpoolCount > 1 {
logit.Error.Println("EventJoinCluster: more than 1 pgpool is in the cluster")
rest.Error(w, "only 1 pgpool is allowed in a cluster", http.StatusBadRequest)
return
}
err = admindb.UpdateContainer(dbConn, origDBNode)
if err != nil {
logit.Error.Println("EventJoinCluster:" + err.Error())
rest.Error(w, err.Error(), http.StatusBadRequest)
return
}
}
i++
}
//we use the -1 value to indicate that we are only adding
//to an existing cluster, the UI doesn't know who the master
//is at this point
if MasterID != "-1" {
//update the master node
origDBNode, err = admindb.GetContainer(dbConn, MasterID)
if err != nil {
logit.Error.Println("EventJoinCluster:" + err.Error())
rest.Error(w, err.Error(), http.StatusBadRequest)
return
}
origDBNode.ClusterID = ClusterID
origDBNode.Role = "master"
err = admindb.UpdateContainer(dbConn, origDBNode)
if err != nil {
logit.Error.Println("EventJoinCluster:" + err.Error())
rest.Error(w, err.Error(), http.StatusBadRequest)
return
}
}
w.WriteHeader(http.StatusOK)
status := SimpleStatus{}
status.Status = "OK"
w.WriteJson(&status)
}
func ScaleUpCluster(w rest.ResponseWriter, r *rest.Request) {
dbConn, err := util.GetConnection(CLUSTERADMIN_DB)
if err != nil {
logit.Error.Println("BackupNow: error " + err.Error())
rest.Error(w, err.Error(), 400)
return
}
defer dbConn.Close()
err = secimpl.Authorize(dbConn, r.PathParam("Token"), "perm-read")
if err != nil {
logit.Error.Println("GetCluster: authorize error " + err.Error())
rest.Error(w, err.Error(), http.StatusUnauthorized)
return
}
ID := r.PathParam("ID")
cluster, err := admindb.GetCluster(dbConn, ID)
if err != nil {
logit.Error.Println(err.Error())
rest.Error(w, err.Error(), http.StatusBadRequest)
return
}
var containers []admindb.Container
containers, err = admindb.GetAllContainersForCluster(dbConn, ID)
if err != nil {
logit.Error.Println(err.Error())
rest.Error(w, err.Error(), http.StatusBadRequest)
return
}
//determine number of standby nodes currently
standbyCnt := 0
for i := range containers {
if containers[i].Role == STANDBY {
standbyCnt++
}
}
logit.Info.Printf("standbyCnt ends at %d\n", standbyCnt)
//provision new container
params := new(cpmserverapi.DockerRunRequest)
params.Image = CPM_NODE_IMAGE
//TODO make the server choice smart
params.ServerID = containers[0].ServerID
params.ProjectID = cluster.ProjectID
params.ContainerName = cluster.Name + "-" + STANDBY + "-" + fmt.Sprintf("%d", standbyCnt)
params.Standalone = "false"
var standby = true
var PROFILE = "LG"
logit.Info.Printf("here with ProjectID %s\n", cluster.ProjectID)
err = provisionImpl(dbConn, params, PROFILE, standby)
if err != nil {
logit.Error.Println(err.Error())
rest.Error(w, err.Error(), http.StatusBadRequest)
return
}
err = provisionImplInit(dbConn, params, PROFILE, false)
if err != nil {
logit.Error.Println(err.Error())
rest.Error(w, err.Error(), http.StatusBadRequest)
return
}
//need to update the new container's ClusterID
var node admindb.Container
node, err = admindb.GetContainerByName(dbConn, params.ContainerName)
if err != nil {
logit.Error.Println(err.Error())
rest.Error(w, "error"+err.Error(), http.StatusBadRequest)
return
}
node.ClusterID = cluster.ID
node.Role = STANDBY
err = admindb.UpdateContainer(dbConn, node)
if err != nil {
logit.Error.Println(err.Error())
rest.Error(w, "error"+err.Error(), http.StatusBadRequest)
return
}
err = configureCluster(dbConn, cluster, false)
if err != nil {
logit.Error.Println(err.Error())
rest.Error(w, err.Error(), http.StatusBadRequest)
return
}
w.WriteHeader(http.StatusOK)
status := SimpleStatus{}
status.Status = "OK"
w.WriteJson(&status)
}