X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=examples%2Fsimple-client%2Fsimple_client.go;h=7aeaa0b7ea8250c4a1d234efb9303389b3f92a4f;hb=c7ae74a95d1bd6fefcbb061f5f045c60c11e32fc;hp=609a25d6f627ed8e9ed57b5d394419cdafc9f500;hpb=ef471318d66dd2832df4dc929d312f7cd5f7009a;p=govpp.git diff --git a/examples/simple-client/simple_client.go b/examples/simple-client/simple_client.go index 609a25d..7aeaa0b 100644 --- a/examples/simple-client/simple_client.go +++ b/examples/simple-client/simple_client.go @@ -17,20 +17,22 @@ package main import ( + "context" "flag" "fmt" "log" - "net" "os" - "strings" "git.fd.io/govpp.git" "git.fd.io/govpp.git/adapter/socketclient" "git.fd.io/govpp.git/api" "git.fd.io/govpp.git/core" - "git.fd.io/govpp.git/examples/binapi/acl" + "git.fd.io/govpp.git/examples/binapi/interface_types" "git.fd.io/govpp.git/examples/binapi/interfaces" "git.fd.io/govpp.git/examples/binapi/ip" + "git.fd.io/govpp.git/examples/binapi/ip_types" + "git.fd.io/govpp.git/examples/binapi/mactime" + "git.fd.io/govpp.git/examples/binapi/vpe" ) var ( @@ -42,17 +44,18 @@ func main() { fmt.Println("Starting simple client example") - // connect to VPP + // connect to VPP asynchronously conn, conev, err := govpp.AsyncConnect(*sockAddr, core.DefaultMaxReconnectAttempts, core.DefaultReconnectInterval) if err != nil { log.Fatalln("ERROR:", err) } defer conn.Disconnect() + // wait for Connected event select { case e := <-conev: if e.State != core.Connected { - log.Fatalln("ERROR: connecting to VPP failed:", err) + log.Fatalln("ERROR: connecting to VPP failed:", e.Error) } } @@ -63,93 +66,84 @@ func main() { } defer ch.Close() - // individual examples - aclVersion(ch) - aclConfig(ch) - aclDump(ch) + if err := ch.CheckCompatiblity(vpe.AllMessages()...); err != nil { + log.Fatal(err) + } - interfaceDump(ch) - ipAddressDump(ch) + vppVersion(ch) - setIpUnnumbered(ch) - ipUnnumberedDump(ch) + if err := ch.CheckCompatiblity(interfaces.AllMessages()...); err != nil { + log.Fatal(err) + } - interfaceNotifications(ch) -} + idx := createLoopback(ch) + interfaceDump(ch) -// aclVersion is the simplest API example - one empty request message and one reply message. -func aclVersion(ch api.Channel) { - fmt.Println("ACL getting version") + addIPAddress(ch, idx) + ipAddressDump(ch, idx) + interfaceNotifications(ch, idx) - req := &acl.ACLPluginGetVersion{} - reply := &acl.ACLPluginGetVersionReply{} + mactimeDump(conn) - if err := ch.SendRequest(req).ReceiveReply(reply); err != nil { - fmt.Println("ERROR:", err) + if len(Errors) > 0 { + fmt.Printf("finished with %d errors\n", len(Errors)) + os.Exit(1) } else { - fmt.Printf("ACL version reply: %+v\n", reply) + fmt.Println("finished successfully") } } -// aclConfig is another simple API example - in this case, the request contains structured data. -func aclConfig(ch api.Channel) { - fmt.Println("ACL adding replace") - - req := &acl.ACLAddReplace{ - ACLIndex: ^uint32(0), - Tag: []byte("access list 1"), - R: []acl.ACLRule{ - { - IsPermit: 1, - SrcIPAddr: net.ParseIP("10.0.0.0").To4(), - SrcIPPrefixLen: 8, - DstIPAddr: net.ParseIP("192.168.1.0").To4(), - DstIPPrefixLen: 24, - Proto: 6, - }, - { - IsPermit: 1, - SrcIPAddr: net.ParseIP("8.8.8.8").To4(), - SrcIPPrefixLen: 32, - DstIPAddr: net.ParseIP("172.16.0.0").To4(), - DstIPPrefixLen: 16, - Proto: 6, - }, - }, - } - reply := &acl.ACLAddReplaceReply{} +var Errors []error + +func logError(err error, msg string) { + fmt.Printf("ERROR: %s: %v\n", msg, err) + Errors = append(Errors, err) +} + +// vppVersion is the simplest API example - it retrieves VPP version. +func vppVersion(ch api.Channel) { + fmt.Println("Retrieving version") + + req := &vpe.ShowVersion{} + reply := &vpe.ShowVersionReply{} if err := ch.SendRequest(req).ReceiveReply(reply); err != nil { - fmt.Println("ERROR:", err) + logError(err, "retrieving version") return } + fmt.Printf("reply: %+v\n", reply) - fmt.Printf("ACL add replace reply: %+v\n", reply) - + fmt.Printf("VPP version: %q\n", reply.Version) + fmt.Println("OK") + fmt.Println() } -// aclDump shows an example where SendRequest and ReceiveReply are not chained together. -func aclDump(ch api.Channel) { - fmt.Println("Dumping ACL") +// createLoopback sends request to create loopback interface. +func createLoopback(ch api.Channel) interface_types.InterfaceIndex { + fmt.Println("Creating loopback interface") - req := &acl.ACLDump{} - reply := &acl.ACLDetails{} + req := &interfaces.CreateLoopback{} + reply := &interfaces.CreateLoopbackReply{} - reqCtx := ch.SendRequest(req) - - if err := reqCtx.ReceiveReply(reply); err != nil { - fmt.Println("ERROR:", err) - } else { - fmt.Printf("ACL details: %+v\n", reply) + if err := ch.SendRequest(req).ReceiveReply(reply); err != nil { + logError(err, "creating loopback interface") + return 0 } + fmt.Printf("reply: %+v\n", reply) + + fmt.Printf("interface index: %v\n", reply.SwIfIndex) + fmt.Println("OK") + fmt.Println() + + return reply.SwIfIndex } // interfaceDump shows an example of multipart request (multiple replies are expected). func interfaceDump(ch api.Channel) { fmt.Println("Dumping interfaces") + n := 0 reqCtx := ch.SendMultiRequest(&interfaces.SwInterfaceDump{}) - for { msg := &interfaces.SwInterfaceDetails{} stop, err := reqCtx.ReceiveReply(msg) @@ -157,87 +151,82 @@ func interfaceDump(ch api.Channel) { break } if err != nil { - fmt.Println("ERROR:", err) + logError(err, "dumping interfaces") return } - ifaceName := strings.TrimFunc(string(msg.InterfaceName), func(r rune) bool { - return r == 0x00 - }) - fmt.Printf("Interface %q: %+v\n", ifaceName, msg) + n++ + fmt.Printf(" - interface #%d: %+v\n", n, msg) } -} - -func ipAddressDump(ch api.Channel) { - fmt.Println("Dumping IP addresses") - req := &ip.IPAddressDump{ - SwIfIndex: 1, //^uint32(0), - } - reqCtx := ch.SendMultiRequest(req) - - for { - msg := &ip.IPAddressDetails{} - stop, err := reqCtx.ReceiveReply(msg) - if stop { - break - } - if err != nil { - fmt.Println("ERROR:", err) - return - } - fmt.Printf("ip address details: %d %+v\n", msg.SwIfIndex, msg) - } + fmt.Println("OK") + fmt.Println() } -// aclDump shows an example where SendRequest and ReceiveReply are not chained together. -func setIpUnnumbered(ch api.Channel) { - req := &interfaces.SwInterfaceSetUnnumbered{ - SwIfIndex: 1, - UnnumberedSwIfIndex: 2, - IsAdd: 1, +// addIPAddress sends request to add IP address to interface. +func addIPAddress(ch api.Channel, index interface_types.InterfaceIndex) { + fmt.Printf("Adding IP address to interface to interface index %d\n", index) + + req := &interfaces.SwInterfaceAddDelAddress{ + SwIfIndex: index, + IsAdd: true, + Prefix: ip_types.AddressWithPrefix{ + Address: ip_types.Address{ + Af: ip_types.ADDRESS_IP4, + Un: ip_types.AddressUnionIP4(ip_types.IP4Address{10, 10, 0, uint8(index)}), + }, + Len: 32, + }, } - reply := &interfaces.SwInterfaceSetUnnumberedReply{} + reply := &interfaces.SwInterfaceAddDelAddressReply{} if err := ch.SendRequest(req).ReceiveReply(reply); err != nil { - fmt.Println("ERROR:", err) - } else { - fmt.Printf("%+v\n", reply) + logError(err, "adding IP address to interface") + return } + fmt.Printf("reply: %+v\n", reply) + + fmt.Println("OK") + fmt.Println() } -func ipUnnumberedDump(ch api.Channel) { - fmt.Println("Dumping IP unnumbered") +func ipAddressDump(ch api.Channel, index interface_types.InterfaceIndex) { + fmt.Printf("Dumping IP addresses for interface index %d\n", index) - reqCtx := ch.SendMultiRequest(&ip.IPUnnumberedDump{ - SwIfIndex: ^uint32(0), - }) + req := &ip.IPAddressDump{ + SwIfIndex: index, + } + reqCtx := ch.SendMultiRequest(req) for { - msg := &ip.IPUnnumberedDetails{} + msg := &ip.IPAddressDetails{} stop, err := reqCtx.ReceiveReply(msg) - if stop { - break - } if err != nil { - fmt.Println("ERROR:", err) + logError(err, "dumping IP addresses") return } - fmt.Printf("IP unnumbered details: %+v\n", msg) + if stop { + break + } + fmt.Printf(" - ip address: %+v\n", msg) } + + fmt.Println("OK") + fmt.Println() } // interfaceNotifications shows the usage of notification API. Note that for notifications, // you are supposed to create your own Go channel with your preferred buffer size. If the channel's // buffer is full, the notifications will not be delivered into it. -func interfaceNotifications(ch api.Channel) { - fmt.Println("Subscribing to notificaiton events") +func interfaceNotifications(ch api.Channel, index interface_types.InterfaceIndex) { + fmt.Printf("Subscribing to notificaiton events for interface index %d\n", index) notifChan := make(chan api.Message, 100) // subscribe for specific notification message sub, err := ch.SubscribeNotification(notifChan, &interfaces.SwInterfaceEvent{}) if err != nil { - panic(err) + logError(err, "subscribing to interface events") + return } // enable interface events in VPP @@ -246,41 +235,94 @@ func interfaceNotifications(ch api.Channel) { EnableDisable: 1, }).ReceiveReply(&interfaces.WantInterfaceEventsReply{}) if err != nil { - panic(err) + logError(err, "enabling interface events") + return } + // receive notifications + go func() { + for notif := range notifChan { + fmt.Printf("incoming event: %+v\n", notif.(*interfaces.SwInterfaceEvent)) + } + }() + // generate some events in VPP err = ch.SendRequest(&interfaces.SwInterfaceSetFlags{ - SwIfIndex: 0, - AdminUpDown: 0, + SwIfIndex: index, + Flags: interface_types.IF_STATUS_API_FLAG_ADMIN_UP, }).ReceiveReply(&interfaces.SwInterfaceSetFlagsReply{}) if err != nil { - panic(err) + logError(err, "setting interface flags") + return } err = ch.SendRequest(&interfaces.SwInterfaceSetFlags{ - SwIfIndex: 0, - AdminUpDown: 1, + SwIfIndex: index, + Flags: 0, }).ReceiveReply(&interfaces.SwInterfaceSetFlagsReply{}) if err != nil { - panic(err) + logError(err, "setting interface flags") + return } - // receive one notification - notif := (<-notifChan).(*interfaces.SwInterfaceEvent) - fmt.Printf("incoming event: %+v\n", notif) - // disable interface events in VPP err = ch.SendRequest(&interfaces.WantInterfaceEvents{ PID: uint32(os.Getpid()), EnableDisable: 0, }).ReceiveReply(&interfaces.WantInterfaceEventsReply{}) if err != nil { - panic(err) + logError(err, "setting interface flags") + return } // unsubscribe from delivery of the notifications err = sub.Unsubscribe() + if err != nil { + logError(err, "unsubscribing from interface events") + return + } + + fmt.Println("OK") + fmt.Println() +} + +func mactimeDump(conn api.Connection) { + fmt.Println("Sending mactime dump") + + ctx := context.Background() + + stream, err := conn.NewStream(ctx) if err != nil { panic(err) } + defer stream.Close() + + if err := stream.SendMsg(&mactime.MactimeDump{}); err != nil { + logError(err, "sending mactime dump") + return + } + +Loop: + for { + msg, err := stream.RecvMsg() + if err != nil { + logError(err, "dumping mactime") + return + } + + switch msg.(type) { + case *mactime.MactimeDetails: + fmt.Printf(" - MactimeDetails: %+v\n", msg) + + case *mactime.MactimeDumpReply: + fmt.Printf(" - MactimeDumpReply: %+v\n", msg) + break Loop + + default: + logError(err, "unexpected message") + return + } + } + + fmt.Println("OK") + fmt.Println() }