// Test the discovery process by writing and reading back service information
func TestDiscovery(t *testing.T) {
fmt.Println("eureka_test start")
listener := make(chan gotocol.Message)
edda.Logchan = make(chan gotocol.Message, 10) // buffered channel
archaius.Conf.Msglog = true
archaius.Conf.GraphjsonFile = "test"
archaius.Conf.GraphmlFile = "test"
go edda.Start("test.edda")
eureka := make(chan gotocol.Message, 10)
go Start(eureka, "test.eureka")
// stack up a series of requests in the buffered channel
eureka <- gotocol.Message{gotocol.Hello, listener, time.Now(), gotocol.NilContext, "test0" + " " + "test"}
eureka <- gotocol.Message{gotocol.Hello, listener, time.Now(), gotocol.NilContext, "test1" + " " + "test"}
eureka <- gotocol.Message{gotocol.Hello, listener, time.Now(), gotocol.NilContext, "thing0" + " " + "thing"}
eureka <- gotocol.Message{gotocol.GetRequest, listener, time.Now(), gotocol.NilContext, "test0"}
eureka <- gotocol.Message{gotocol.Goodbye, listener, time.Now(), gotocol.NilContext, ""}
// pick up responses until we see the Goodbye response
for {
msg := <-listener
if archaius.Conf.Msglog {
fmt.Printf("test_eureka: %v\n", msg)
}
if msg.Imposition == gotocol.Goodbye {
break
}
switch msg.Imposition {
case gotocol.GetResponse:
if msg.Intention != "test" {
t.Fail()
}
}
}
if edda.Logchan != nil {
close(edda.Logchan)
}
//wait until edda and eureka finish flushing and close files
Wg.Wait()
edda.Wg.Wait()
fmt.Println("eureka_test end")
}
// 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()
}