Example #1
0
// Reload the network from a file
func Reload(arch string) string {
	root := ""
	g := graphjson.ReadArch(arch)
	archaius.Conf.Population = 0 // just to make sure
	// count how many nodes there are
	for _, element := range g.Graph {
		if element.Node != "" {
			archaius.Conf.Population++
		}
	}
	CreateChannels()
	CreateEureka()
	// eureka and edda aren't recorded in the json file to simplify the graph
	// Start all the services
	cass := make(map[string]chan gotocol.Message) // for token distribution
	for _, element := range g.Graph {
		if element.Node != "" {
			name := element.Node
			StartNode(name, "")
			if names.Package(name) == DenominatorPkg {
				root = name
			}
			if names.Package(name) == "priamCassandra" {
				cass[name] = noodles[name] // remember the nodes
			}
		}
	}
	if len(cass) > 0 { // currently doesn't handle multiple priamCassandra per arch
		priamCassandra.Distribute(cass) // returns a string if it needs logging
	}
	// Make all the connections
	for _, element := range g.Graph {
		if element.Edge != "" && element.Source != "" && element.Target != "" {
			Connect(element.Source, element.Target)
		}
	}
	// run for a while
	if root == "" {
		log.Fatal("No denominator root microservice specified")
	}
	return root
}
Example #2
0
// Create a tier and specify any dependencies, return the full name of the last node created
func Create(servicename, packagename string, regions, count int, dependencies ...string) string {
	var name string
	arch := archaius.Conf.Arch
	rnames := archaius.Conf.RegionNames
	znames := archaius.Conf.ZoneNames
	if regions == 0 { // for dns that isn't in a region or zone
		//log.Printf("Create cross region: " + servicename)
		name = names.Make(arch, "*", "*", servicename, packagename, 0)
		StartNode(name, dependencies...)
	}
	for r := 0; r < regions; r++ {
		if count == 0 { // for AWS services that are cross zone like elb and S3
			//log.Printf("Create cross zone: " + servicename)
			name = names.Make(arch, rnames[r], "*", servicename, packagename, 0)
			StartNode(name, dependencies...)
		} else {
			//log.Printf("Create service: " + servicename)
			cass := make(map[string]mapchan) // for token distribution
			for i := r * count; i < (r+1)*count; i++ {
				name = names.Make(arch, rnames[r], znames[i%len(archaius.Conf.ZoneNames)], servicename, packagename, i)
				//log.Println(dependencies)
				StartNode(name, dependencies...)
				if packagename == "priamCassandra" {
					rz := names.RegionZone(name)
					if cass[rz] == nil {
						cass[rz] = make(mapchan)
					}
					cass[rz][name] = noodles[name] // remember the nodes
				}
			}
			if packagename == "priamCassandra" {
				// split by zone
				for _, v := range cass {
					priamCassandra.Distribute(v) // returns a string if it needs logging
				}
			}
		}
	}
	return name
}