// ExampleVersion shows using incompatible versions of Marketinges in tandem.
func ExampleVersion() {
log.Println("\n***** ExampleVersion *****\n")
// Server
var listener, err = net.Listen("tcp", ":4040")
if err != nil {
panic(err)
}
var server = offers.Server{Listener: listener, Server: rpc.NewServer()}
server.RegisterName("Marketing", offers.Receiver{Configuration: configure("Server 1"), Interface: offers.Offers{Configuration: configure("Server 1")}})
server.RegisterName("Marketing_v2", offers.Receiver{Configuration: configure("Server 2"), Interface: offers.Offers{Configuration: configure("Server 2")}} /* v2.Receiver{Configuration: [...], Service: [...]} */)
go func() {
if err := server.Start(); err != nil {
panic(err)
}
}()
// Clients
client, err := rpc.Dial("tcp", ":4040")
if err != nil {
panic(err)
}
var client1 = offers.Client{Client: client, Configuration: configure("Client 1"), Name: "Marketing"}.ForContext(offers.Context{ID: tigertonic.RandomBase62String(8)})
var client2 = offers.Client{Client: client, Configuration: configure("Client 2"), Name: "Marketing_v2"}.ForContext(offers.Context{ID: tigertonic.RandomBase62String(8)})
// Use 1
m, err := client1.New(offer.Offer{Name: "nerddomo"})
if err != nil {
panic(err)
}
log.Printf("New: Got: %# v\n\n", pretty.Formatter(simplify(m)))
m, err = client1.Get(m.ID)
if err != nil {
panic(err)
}
log.Printf("Get: Got: %# v\n\n", pretty.Formatter(simplify(m)))
m.Name = "test"
m, err = client1.Set(m)
if err != nil {
panic(err)
}
log.Printf("Set: Got: %# v\n\n", pretty.Formatter(simplify(m)))
m, err = client1.Delete(m)
if err != nil {
panic(err)
}
log.Printf("Delete: Got: %# v\n\n", pretty.Formatter(simplify(m)))
// Use 2
m, err = client2.New(offer.Offer{Name: "nerddomo"})
if err != nil {
panic(err)
}
log.Printf("New: Got: %# v\n\n", pretty.Formatter(simplify(m)))
m, err = client2.Get(m.ID)
if err != nil {
panic(err)
}
log.Printf("Get: Got: %# v\n\n", pretty.Formatter(simplify(m)))
m.Name = "test"
m, err = client2.Set(m)
if err != nil {
panic(err)
}
log.Printf("Set: Got: %# v\n\n", pretty.Formatter(simplify(m)))
m, err = client2.Delete(m)
if err != nil {
panic(err)
}
log.Printf("Delete: Got: %# v\n\n", pretty.Formatter(simplify(m)))
// Client
if err := client.Close(); err != nil {
panic(err)
}
// Server
if err := server.Stop(); err != nil {
panic(err)
}
}
// ExampleGracefulRestart shows enabling graceful restarts.
func ExampleGracefulRestart() {
log.Println("\n***** ExampleGracefulRestart *****\n")
// Server
var gn = &gracenet.Net{}
var listener, err = gn.Listen("tcp", ":4545")
if err != nil {
panic(err)
}
var server = offers.Server{Listener: listener, Server: rpc.NewServer()}
server.RegisterName("Marketing", offers.Receiver{Configuration: configure("Server"), Interface: offers.Offers{Configuration: configure("Server")}})
go func() {
if err := server.Start(); err != nil {
panic(err)
}
}()
var done = make(chan struct{})
go func() {
var c = make(chan os.Signal, 10)
signal.Notify(c, syscall.SIGTERM, syscall.SIGUSR2)
for {
var s = <-c
switch s {
case syscall.SIGTERM:
log.Println("Received SIGTERM\n")
signal.Stop(c)
done <- struct{}{}
return
case syscall.SIGUSR2:
log.Println("Received SIGUSR2\n")
if _, err := gn.StartProcess(); err != nil {
log.Fatalln("Error:", err)
}
}
}
}()
// Client
var client = offers.MustNewClient(configure("Client"), ":4545").ForContext(offers.Context{ID: tigertonic.RandomBase62String(8)}).(offers.Client)
// Use
Main:
for {
var m = offer.Offer{Interface: client, Name: "nerddomo"}
m, err := m.New()
if err != nil {
panic(err)
}
log.Printf("New: Got: %# v\n\n", pretty.Formatter(simplify(m)))
m, err = client.Get(m.ID)
if err != nil {
panic(err)
}
log.Printf("Get: Got: %# v\n\n", pretty.Formatter(simplify(m)))
m.Name = "bar"
m, err = m.Set()
if err != nil {
panic(err)
}
log.Printf("Set: Got: %# v\n\n", pretty.Formatter(simplify(m)))
m, err = m.Delete()
if err != nil {
panic(err)
}
log.Printf("Delete: Got: %# v\n\n", pretty.Formatter(simplify(m)))
log.Println()
select {
case <-done:
break Main
case <-time.After(time.Second * 10):
}
}
// Client
if err := client.Close(); err != nil {
panic(err)
}
// Server
if err := server.Stop(); err != nil {
panic(err)
}
}
// ExampleHTTPJSON shows using JSON over HTTP.
func ExampleHTTPJSON() {
log.Println("\n***** ExampleHTTPJSON *****\n")
// Listener
var listener, err = net.Listen("tcp", ":5656")
if err != nil {
panic(err)
}
// RPC server
var rserver = rpc.NewServer()
rserver.RegisterName("Marketing", offers.Receiver{Configuration: configure("Server"), Interface: offers.Offers{Configuration: configure("Server")}})
// Gob server
var mserver = offers.Server{Listener: listener, Server: rserver}
go func() {
if err := mserver.Start(); err != nil {
panic(err)
}
}()
// JSON server
var mux = http.NewServeMux()
mux.Handle("/", offers.NewJSONRPCHandler(rserver))
var hserver = &http.Server{Addr: ":7777", Handler: mux}
go func() {
if err := hserver.ListenAndServe(); err != nil {
panic(err)
}
}()
// RPC client
rclient, err := jsonrpc.Dial("tcp", ":5656")
if err != nil {
panic(err)
}
var client = offers.Client{Client: rclient, Configuration: configure("Client"), Name: "Marketing"}.ForContext(offers.Context{ID: tigertonic.RandomBase62String(8)}).(offers.Client)
// Use RPC client
m, err := client.New(offer.Offer{Name: "nerddomo"})
if err != nil {
panic(err)
}
log.Printf("RPC New: Got: %# v\n\n", pretty.Formatter(simplify(m)))
m, err = client.Get(m.ID)
if err != nil {
panic(err)
}
log.Printf("RPC Get: Got: %# v\n\n", pretty.Formatter(simplify(m)))
m.Name = "test"
m, err = client.Set(m)
if err != nil {
panic(err)
}
log.Printf("RPC Set: Got: %# v\n\n", pretty.Formatter(simplify(m)))
m, err = client.Delete(m)
if err != nil {
panic(err)
}
log.Printf("RPC Delete: Got: %# v\n\n", pretty.Formatter(simplify(m)))
// HTTP client
var call = func(method string, args map[string]interface{}) interface{} {
b, err := json.Marshal(map[string]interface{}{
"id": client.Context.ID,
"method": "Marketing." + method,
"params": []interface{}{
map[string]interface{}{
"Arguments": args,
"Context": client.Context,
},
},
})
if err != nil {
panic(err)
}
request, err := http.NewRequest("POST", "http://localhost:7777", strings.NewReader(string(b)))
if err != nil {
panic(err)
}
response, err := http.DefaultClient.Do(request)
if err != nil {
panic(err)
}
defer response.Body.Close()
var body struct {
Error interface{} `json:"error"`
ID interface{} `json:"id"`
Result interface{} `json:"result"`
}
if err := json.NewDecoder(response.Body).Decode(&body); err != nil {
panic(err)
}
if body.Error != nil {
panic(err)
}
return body.Result
}
// Use HTTP client
log.Printf("HTTP New: Got: %# v\n\n", call("New", map[string]interface{}{"M": offer.Offer{Name: "nerddomo"}}))
// RPC client
if err := client.Close(); err != nil {
panic(err)
}
// Marketing server
if err := mserver.Stop(); err != nil {
panic(err)
}
// Listener
if err := listener.Close(); err != nil {
panic(err)
}
}