// Create a query node configuration
func NewQueryNode(query_addr string,
stndln *clustering.StdStandalone,
opts *clustering.ClOptions) (clustering.QueryNode, errors.Error) {
ip_addr, err := util.ExternalIP()
if err != nil {
ip_addr = "127.0.0.1"
}
// Construct query node name from ip addr and http_addr. Assumption that this will be unique
queryName := ip_addr + query_addr
queryEndpoint := "http://" + queryName + "/query"
// TODO : protocol specification: how do we know it will be http?
adminEndpoint := "http://" + queryName + "/admin"
return makeZkQueryNodeConfig("", queryName, queryEndpoint, adminEndpoint, stndln, opts), nil
}
func doConfig(endpoint *HttpEndpoint, w http.ResponseWriter, req *http.Request) (interface{}, errors.Error) {
if localConfig.myConfig != nil {
return localConfig.myConfig, nil
}
cfgStore := endpoint.server.ConfigurationStore()
var self clustering.QueryNode
ip, err := util.ExternalIP()
if err != nil {
return nil, err
}
name, er := os.Hostname()
if er != nil {
return nil, err
}
cm := cfgStore.ConfigurationManager()
clusters, err := cm.GetClusters()
if err != nil {
return nil, err
}
for _, c := range clusters {
clm := c.ClusterManager()
queryNodes, err := clm.GetQueryNodes()
if err != nil {
return nil, err
}
for _, qryNode := range queryNodes {
if qryNode.Name() == ip || qryNode.Name() == name {
self = qryNode
break
}
}
}
localConfig.Lock()
defer localConfig.Unlock()
localConfig.myConfig = self
return localConfig.myConfig, nil
}