コード例 #1
0
ファイル: collect.go プロジェクト: jgcsco/spigo
// have to pass in name because metrics.Histogram blocks expvar.Histogram.Name()
func SaveHist(h metrics.Histogram, name, suffix string) {
	if archaius.Conf.Collect {
		file, err := os.Create("csv_metrics/" + names.Arch(name) + "_" + names.Instance(name) + suffix + ".csv")
		if err != nil {
			log.Printf("%v: %v\n", name, err)
		}
		metrics.PrintDistribution(file, h)
		file.Close()
	}
}
コード例 #2
0
ファイル: graphneo.go プロジェクト: jgcsco/spigo
// WriteNode writes the node to a file given a space separated name and service type
func WriteNode(nameService string, t time.Time) {
	if Enabled == false {
		return
	}
	var node, pack string
	fmt.Sscanf(nameService, "%s%s", &node, &pack) // space delimited
	tstamp := t.Format(time.RFC3339Nano)
	// node id should be unique and package indicates service type
	nodestmt, err := db.Prepare(fmt.Sprintf("CREATE (:%v:%v:%v {name:{0}, node:{1}, timestamp:{2}, ip:{3}, region:{4}, zone:{5}})", archaius.Conf.Arch+ss, pack, names.Service(node)))
	if err != nil {
		log.Fatal(err)
	}
	_, err = nodestmt.Exec(names.Instance(node), node, tstamp, dhcp.Lookup(node), names.Region(node), names.Zone(node))
	if err != nil {
		log.Fatal(err)
	}
	nodestmt.Close()
}
コード例 #3
0
ファイル: staash.go プロジェクト: jgcsco/spigo
// Start staash, all configuration and state is sent via messages
func Start(listener chan gotocol.Message) {
	microservices := ribbon.MakeRouter()                     // outbound routes
	var caches, stores, volumes, cass, staash *ribbon.Router // subsets of the router
	dependencies := make(map[string]time.Time)               // dependent service names and time last updated
	var parent chan gotocol.Message                          // remember how to talk back to creator
	requestor := make(map[string]gotocol.Routetype)          // remember where requests came from when responding
	var name string                                          // remember my name
	eureka := make(map[string]chan gotocol.Message, 1)       // service registry
	hist := collect.NewHist("")
	ep, _ := time.ParseDuration(archaius.Conf.EurekaPoll)
	eurekaTicker := time.NewTicker(ep)
	for {
		select {
		case msg := <-listener:
			flow.Instrument(msg, name, hist)
			switch msg.Imposition {
			case gotocol.Hello:
				if name == "" {
					// if I don't have a name yet remember what I've been named
					parent = msg.ResponseChan // remember how to talk to my namer
					name = msg.Intention      // message body is my name
					hist = collect.NewHist(name)
				}
			case gotocol.Inform:
				eureka[msg.Intention] = handlers.Inform(msg, name, listener)
			case gotocol.NameDrop:
				handlers.NameDrop(&dependencies, microservices, msg, name, listener, eureka, true) // true to setup cross zone routing
				caches = microservices.All(CachePkg)
				volumes = microservices.All(VolumePkg)
				stores = microservices.All(StorePkg)
				cass = microservices.All(PriamCassandraPkg)
				staash = microservices.All(StaashPkg)
			case gotocol.Forget:
				// forget a buddy
				handlers.Forget(&dependencies, microservices, msg)
				caches = microservices.All(CachePkg)
				volumes = microservices.All(VolumePkg)
				stores = microservices.All(StorePkg)
				cass = microservices.All(PriamCassandraPkg)
				staash = microservices.All(StaashPkg)
			case gotocol.GetRequest:
				// route the request on to a cache first if configured
				r := gotocol.PickRoute(requestor, msg)
				if caches.Len() > 0 {
					handlers.GetRequest(msg, name, listener, &requestor, caches)
					r.State = cacheLookup
				} else {
					// route to any volumes if configured
					if volumes.Len() > 0 {
						handlers.GetRequest(msg, name, listener, &requestor, volumes)
						r.State = volumeLookup
					} else {
						// route to any cassandra if configured
						if cass.Len() > 0 {
							handlers.GetRequest(msg, name, listener, &requestor, cass)
							r.State = cassandraLookup
						} else {
							// route to stores if configured
							if stores.Len() > 0 {
								handlers.GetRequest(msg, name, listener, &requestor, stores)
								r.State = storeLookup
							} else {
								// route to more staash layers if configured
								if staash.Len() > 0 {
									handlers.GetRequest(msg, name, listener, &requestor, staash)
									r.State = staashLookup
								}
							}
						}
					}
				}
				//log.Printf("%v: %v route: %v", name, msg.Context, r)
			case gotocol.GetResponse:
				// return path from a request, resend or send payload back up using saved span context - server send
				r := gotocol.PickRoute(requestor, msg)
				if msg.Intention != "" { // we got a value, so pass it back up
					handlers.GetResponse(msg, name, listener, &requestor)
				} else {
					switch r.State {
					case cacheLookup:
						if volumes.Len() > 0 {
							handlers.GetRequest(msg, name, listener, &requestor, volumes)
							r.State = volumeLookup
							break
						}
						fallthrough // no volumes so look for cassandra
					case volumeLookup:
						if cass.Len() > 0 {
							handlers.GetRequest(msg, name, listener, &requestor, cass)
							r.State = cassandraLookup
							break
						}
						fallthrough // no cassandra so look for stores
					case cassandraLookup:
						if stores.Len() > 0 {
							handlers.GetRequest(msg, name, listener, &requestor, stores)
							r.State = storeLookup
							break
						}
						fallthrough // no stores
					case storeLookup:
						if staash.Len() > 0 {
							handlers.GetRequest(msg, name, listener, &requestor, staash)
							r.State = staashLookup
							break
						}
						fallthrough // no staash
					case staashLookup:
						// ran out of options to find anything so pass empty response back up
						handlers.GetResponse(msg, name, listener, &requestor)
					case newRequest:
					default:
					}
				}
			case gotocol.Put:
				// duplicate the request to any cache, volumes, stores, and cassandra but only to one of each type
				// storage class packages sideways Replicate if configured
				// to get a lossy write, configure multiple stores that don't cross replicate
				handlers.Put(msg, name, listener, &requestor, caches)
				handlers.Put(msg, name, listener, &requestor, cass)
				handlers.Put(msg, name, listener, &requestor, staash)
				handlers.Put(msg, name, listener, &requestor, stores)
				msg.Intention = names.Instance(name) + "/" + msg.Intention // store to an instance specific volume namespace
				handlers.Put(msg, name, listener, &requestor, volumes)
			case gotocol.Goodbye:
				for _, ch := range eureka { // tell name service I'm not going to be here
					ch <- gotocol.Message{gotocol.Delete, nil, time.Now(), gotocol.NilContext, name}
				}
				gotocol.Message{gotocol.Goodbye, nil, time.Now(), gotocol.NilContext, name}.GoSend(parent)
				return
			}
		case <-eurekaTicker.C: // check to see if any new dependencies have appeared
			for dep, _ := range dependencies {
				for _, ch := range eureka {
					ch <- gotocol.Message{gotocol.GetRequest, listener, time.Now(), gotocol.NilContext, dep}
				}
			}
		}
	}
}
コード例 #4
0
ファイル: graphneo.go プロジェクト: jgcsco/spigo
// record messages in neo4j as well as zipkin
func WriteFlow(source, target, call string, tnano int64, trace gotocol.TraceContextType) {
	if Enabled == false {
		return
	}
	if epoch == 0 {
		epoch = tnano
	}
	Write(fmt.Sprintf("MATCH (from:%v {name: %q}), (to:%v {name: %q})\nCREATE (from)-[:%v {arch:%q, timenano:%v, trace:%v}]->(to)", names.Service(source), names.Instance(source), names.Service(target), names.Instance(target), call, archaius.Conf.Arch+ss, tnano-epoch, trace))
}
コード例 #5
0
ファイル: graphneo.go プロジェクト: jgcsco/spigo
// WriteEdge writes the edge to a file given a space separated from and to node name
func WriteEdge(fromTo string, t time.Time) {
	if Enabled == false {
		return
	}
	var source, target string
	fmt.Sscanf(fromTo, "%s%s", &source, &target) // two space delimited names
	tstamp := t.Format(time.RFC3339Nano)
	Write(fmt.Sprintf("MATCH (from:%v {name: %q}), (to:%v {name: %q})\nCREATE (from)-[:CONN {arch:%q, timestamp:%q}]->(to)", names.Service(source), names.Instance(source), names.Service(target), names.Instance(target), archaius.Conf.Arch+ss, tstamp))
}