// Start architecture
func Start(a *archV0r1) {
var r string
if archaius.Conf.Population < 1 {
log.Fatal("architecture: can't create less than 1 microservice")
} else {
log.Printf("architecture: scaling to %v%%", archaius.Conf.Population)
}
asgard.CreateChannels()
asgard.CreateEureka() // service registries for each zone
for _, s := range a.Services {
log.Printf("Starting: %v\n", s)
r = asgard.Create(s.Name, s.Gopackage, s.Regions*archaius.Conf.Regions, s.Count*archaius.Conf.Population/100, s.Dependencies...)
}
asgard.Run(r, a.Victim) // run the last service in the list, and point chaos monkey at the victim
}
// main handles command line flags and starts up an architecture
func main() {
flag.StringVar(&archaius.Conf.Arch, "a", "netflixoss", "Architecture to create or read, fsm, migration, or read from json_arch/<arch>_arch.json")
flag.IntVar(&archaius.Conf.Population, "p", 100, "Pirate population for fsm or scale factor % for other architectures")
flag.IntVar(&duration, "d", 10, "Simulation duration in seconds")
flag.IntVar(&archaius.Conf.Regions, "w", 1, "Wide area regions to replicate architecture into, defaults based on 6 AWS region names")
flag.BoolVar(&graphmlEnabled, "g", false, "Enable GraphML logging of nodes and edges to gml/<arch>.graphml")
flag.BoolVar(&graphjsonEnabled, "j", false, "Enable GraphJSON logging of nodes and edges to json/<arch>.json")
flag.BoolVar(&neo4jEnabled, "n", false, "Enable Neo4j logging of nodes and edges")
flag.BoolVar(&archaius.Conf.Msglog, "m", false, "Enable console logging of every message")
flag.BoolVar(&reload, "r", false, "Reload graph from json/<arch>.json to setup architecture")
flag.BoolVar(&archaius.Conf.Collect, "c", false, "Collect metrics and flows to json_metrics csv_metrics neo4j and via http: extvars")
flag.IntVar(&archaius.Conf.StopStep, "s", 0, "Sequence number to create multiple runs for ui to step through in json/<arch><s>.json")
flag.StringVar(&archaius.Conf.EurekaPoll, "u", "1s", "Polling interval for Eureka name service, increase for large populations")
flag.StringVar(&archaius.Conf.Keyvals, "kv", "", "Configuration key:value - chat:10ms sets default message insert rate")
flag.BoolVar(&archaius.Conf.Filter, "f", false, "Filter output names to simplify graph by collapsing instances to services")
flag.IntVar(&cpucount, "cpus", runtime.NumCPU(), "Number of CPUs for Go runtime")
runtime.GOMAXPROCS(cpucount)
var cpuprofile = flag.String("cpuprofile", "", "Write cpu profile to file")
var confFile = flag.String("config", "", "Config file to read from json_arch/<config>_conf.json. This config overrides any other command-line arguments.")
var saveConfFile = flag.Bool("saveconfig", false, "Save config file to json_arch/<arch>_conf.json, using the arch name from -a.")
flag.Parse()
if *confFile != "" {
archaius.ReadConf(*confFile)
}
if *cpuprofile != "" {
f, err := os.Create(*cpuprofile)
if err != nil {
log.Fatal(err)
}
pprof.StartCPUProfile(f)
defer pprof.StopCPUProfile()
}
if archaius.Conf.Collect {
collect.Serve(8123) // start web server at port
}
if graphjsonEnabled || graphmlEnabled || neo4jEnabled {
if graphjsonEnabled {
archaius.Conf.GraphjsonFile = archaius.Conf.Arch
}
if graphmlEnabled {
archaius.Conf.GraphmlFile = archaius.Conf.Arch
}
if neo4jEnabled {
if archaius.Conf.Filter {
log.Fatal("Neo4j cannot be used with filtered names option -f")
}
pw := os.Getenv("NEO4JPASSWORD")
url := os.Getenv("NEO4JURL")
if pw == "" {
log.Fatal("Neo4j requires environment variable NEO4JPASSWORD is set")
}
if url == "" {
archaius.Conf.Neo4jURL = "localhost:7474"
} else {
archaius.Conf.Neo4jURL = url
}
log.Println("Graph will be written to Neo4j via NEO4JURL=" + archaius.Conf.Neo4jURL)
}
// make a big buffered channel so logging can start before edda is scheduled
edda.Logchan = make(chan gotocol.Message, 1000)
}
archaius.Conf.RunDuration = time.Duration(duration) * time.Second
if *saveConfFile {
archaius.WriteConf()
}
// start up the selected architecture
go edda.Start(archaius.Conf.Arch + ".edda") // start edda first
if reload {
asgard.Run(asgard.Reload(archaius.Conf.Arch), "")
} else {
switch archaius.Conf.Arch {
case "fsm":
fsm.Start()
case "migration":
migration.Start() // step by step from lamp to netflixoss
default:
a := architecture.ReadArch(archaius.Conf.Arch)
if a == nil {
log.Fatal("Architecture " + archaius.Conf.Arch + " isn't recognized")
} else {
architecture.Start(a)
}
}
}
log.Println("spigo: complete")
// stop edda if it's running and wait for edda to flush messages
if edda.Logchan != nil {
close(edda.Logchan)
}
edda.Wg.Wait()
flow.Shutdown()
}
// Start lamp to netflixoss step by step migration
func Start() {
regions := archaius.Conf.Regions
if archaius.Conf.Population < 1 {
log.Fatal("migration: can't create less than 1 microservice")
} else {
log.Printf("migration: scaling to %v%%", archaius.Conf.Population)
}
// Build the configuration step by step
// start mysql data store layer, which connects to itself
mysqlcount := 2
sname := "rds-mysql"
// start memcached layer, only one per region
mname := "memcache"
mcount := 1
if archaius.Conf.StopStep >= 3 {
// start evcache layer, one per zone
mname = "evcache"
mcount = 3
}
// priam managed Cassandra cluster, turtle because it's used to configure other clusters
priamCassandracount := 12 * archaius.Conf.Population / 100
cname := "cassTurtle"
// staash data access layer connects to mysql master and slave, and evcache
staashcount := 6 * archaius.Conf.Population / 100
tname := "turtle"
// php business logic, we can create a network of simple services from the karyon package
phpcount := 9 * archaius.Conf.Population / 100
pname := "php"
// some node microservice logic, we can create a network of simple services from the karyon package
nodecount := 9 * archaius.Conf.Population / 100
nname := "node"
// zuul api proxies and insert between elb and php
zuulcount := 9 * archaius.Conf.Population / 100
zuname := "wwwproxy"
// AWS elastic load balancer
elbname := "www-elb"
// DNS endpoint
dns := "www"
switch archaius.Conf.StopStep {
case 0: // basic LAMP
asgard.CreateChannels()
asgard.CreateEureka() // service registries for each zone
asgard.Create(sname, StorePkg, regions, mysqlcount, sname)
asgard.Create(pname, MonolithPkg, regions, phpcount, sname)
asgard.Create(elbname, ElbPkg, regions, 0, pname)
case 1: // basic LAMP with memcache
asgard.CreateChannels()
asgard.CreateEureka() // service registries for each zone
asgard.Create(sname, StorePkg, regions, mysqlcount, sname)
asgard.Create(mname, StorePkg, regions, mcount)
asgard.Create(pname, MonolithPkg, regions, phpcount, sname, mname)
asgard.Create(elbname, ElbPkg, regions, 0, pname)
case 2: // LAMP with zuul and memcache
asgard.CreateChannels()
asgard.CreateEureka() // service registries for each zone
asgard.Create(sname, StorePkg, regions, mysqlcount, sname)
asgard.Create(mname, StorePkg, regions, mcount)
asgard.Create(pname, MonolithPkg, regions, phpcount, sname, mname)
asgard.Create(zuname, ZuulPkg, regions, zuulcount, pname)
asgard.Create(elbname, ElbPkg, regions, 0, zuname)
case 3: // LAMP with zuul and staash and evcache
asgard.CreateChannels()
asgard.CreateEureka() // service registries for each zone
asgard.Create(sname, StorePkg, regions, mysqlcount, sname)
asgard.Create(mname, StorePkg, regions, mcount)
asgard.Create(tname, StaashPkg, regions, staashcount, sname, mname)
asgard.Create(pname, KaryonPkg, regions, phpcount, tname)
asgard.Create(zuname, ZuulPkg, regions, zuulcount, pname)
asgard.Create(elbname, ElbPkg, regions, 0, zuname)
case 4: // added node microservice
asgard.CreateChannels()
asgard.CreateEureka() // service registries for each zone
asgard.Create(sname, StorePkg, regions, mysqlcount, sname)
asgard.Create(mname, StorePkg, regions, mcount)
asgard.Create(tname, StaashPkg, regions, staashcount, sname, mname, cname)
asgard.Create(pname, KaryonPkg, regions, phpcount, tname)
asgard.Create(nname, KaryonPkg, regions, nodecount, tname)
asgard.Create(zuname, ZuulPkg, regions, zuulcount, pname, nname)
asgard.Create(elbname, ElbPkg, regions, 0, zuname)
case 5: // added cassandra alongside mysql
asgard.CreateChannels()
asgard.CreateEureka() // service registries for each zone
asgard.Create(cname, PriamCassandraPkg, regions, priamCassandracount, cname)
asgard.Create(sname, StorePkg, regions, mysqlcount, sname)
asgard.Create(mname, StorePkg, regions, mcount)
asgard.Create(tname, StaashPkg, regions, staashcount, sname, mname, cname)
asgard.Create(pname, KaryonPkg, regions, phpcount, tname)
asgard.Create(nname, KaryonPkg, regions, nodecount, tname)
asgard.Create(zuname, ZuulPkg, regions, zuulcount, pname, nname)
asgard.Create(elbname, ElbPkg, regions, 0, zuname)
case 6: // removed mysql so that multi-region will work properly
asgard.CreateChannels()
asgard.CreateEureka() // service registries for each zone
asgard.Create(cname, PriamCassandraPkg, regions, priamCassandracount, cname)
asgard.Create(mname, StorePkg, regions, mcount)
asgard.Create(tname, StaashPkg, regions, staashcount, mname, cname)
asgard.Create(pname, KaryonPkg, regions, phpcount, tname)
asgard.Create(nname, KaryonPkg, regions, nodecount, tname)
asgard.Create(zuname, ZuulPkg, regions, zuulcount, pname, nname)
asgard.Create(elbname, ElbPkg, regions, 0, zuname)
case 7: // set two regions with disconnected priamCassandra
regions = 2
archaius.Conf.Regions = regions
asgard.CreateChannels()
asgard.CreateEureka() // service registries for each zone
asgard.Create(cname, PriamCassandraPkg, regions, priamCassandracount, cname)
asgard.Create(mname, StorePkg, regions, mcount)
asgard.Create(tname, StaashPkg, regions, staashcount, mname, cname)
asgard.Create(pname, KaryonPkg, regions, phpcount, tname)
asgard.Create(nname, KaryonPkg, regions, nodecount, tname)
asgard.Create(zuname, ZuulPkg, regions, zuulcount, pname, nname)
asgard.Create(elbname, ElbPkg, regions, 0, zuname)
case 8: // set two regions with connected priamCassandra
regions = 2
archaius.Conf.Regions = regions
asgard.CreateChannels()
asgard.CreateEureka() // service registries for each zone
asgard.Create(cname, PriamCassandraPkg, regions, priamCassandracount, "eureka", cname)
asgard.Create(mname, StorePkg, regions, mcount)
asgard.Create(tname, StaashPkg, regions, staashcount, mname, cname)
asgard.Create(pname, KaryonPkg, regions, phpcount, tname)
asgard.Create(nname, KaryonPkg, regions, nodecount, tname)
asgard.Create(zuname, ZuulPkg, regions, zuulcount, pname, nname)
asgard.Create(elbname, ElbPkg, regions, 0, zuname)
case 9: // set three regions with disconnected priamCassandra
regions = 3
archaius.Conf.Regions = regions
asgard.CreateChannels()
asgard.CreateEureka() // service registries for each zone
asgard.Create(cname, PriamCassandraPkg, regions, priamCassandracount, "eureka", cname)
asgard.Create(mname, StorePkg, regions, mcount)
asgard.Create(tname, StaashPkg, regions, staashcount, mname, cname)
asgard.Create(pname, KaryonPkg, regions, phpcount, tname)
asgard.Create(nname, KaryonPkg, regions, nodecount, tname)
asgard.Create(zuname, ZuulPkg, regions, zuulcount, pname, nname)
asgard.Create(elbname, ElbPkg, regions, 0, zuname)
}
dnsname := asgard.Create(dns, DenominatorPkg, 0, 0, elbname)
asgard.Run(dnsname, "")
}
