X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=api%2Fbinapi.go;h=04fdc9ee299ea78c4cf1e3ab9338c84ea696c10e;hb=df67791c6ffc96331f75aec7d3addfe2efca7739;hp=6495d0d8e63b425706d96c3c3ce5b69584341ae6;hpb=682250e328472e855a4c59e9e5f004473b6af0d3;p=govpp.git diff --git a/api/binapi.go b/api/binapi.go index 6495d0d..04fdc9e 100644 --- a/api/binapi.go +++ b/api/binapi.go @@ -15,7 +15,8 @@ package api import ( - "time" + "fmt" + "reflect" ) // MessageType represents the type of a VPP message. @@ -54,76 +55,20 @@ type DataType interface { GetTypeName() string } -// ChannelProvider provides the communication channel with govpp core. -type ChannelProvider interface { - // NewAPIChannel returns a new channel for communication with VPP via govpp core. - // It uses default buffer sizes for the request and reply Go channels. - NewAPIChannel() (Channel, error) - - // NewAPIChannelBuffered returns a new channel for communication with VPP via govpp core. - // It allows to specify custom buffer sizes for the request and reply Go channels. - NewAPIChannelBuffered(reqChanBufSize, replyChanBufSize int) (Channel, error) -} - -// Channel provides methods for direct communication with VPP channel. -type Channel interface { - // SendRequest asynchronously sends a request to VPP. Returns a request context, that can be used to call ReceiveReply. - // In case of any errors by sending, the error will be delivered to ReplyChan (and returned by ReceiveReply). - SendRequest(msg Message) RequestCtx - - // SendMultiRequest asynchronously sends a multipart request (request to which multiple responses are expected) to VPP. - // Returns a multipart request context, that can be used to call ReceiveReply. - // In case of any errors by sending, the error will be delivered to ReplyChan (and returned by ReceiveReply). - SendMultiRequest(msg Message) MultiRequestCtx - - // SubscribeNotification subscribes for receiving of the specified notification messages via provided Go channel. - // Note that the caller is responsible for creating the Go channel with preferred buffer size. If the channel's - // buffer is full, the notifications will not be delivered into it. - SubscribeNotification(notifChan chan Message, event Message) (SubscriptionCtx, error) - - // SetReplyTimeout sets the timeout for replies from VPP. It represents the maximum time the API waits for a reply - // from VPP before returning an error. - SetReplyTimeout(timeout time.Duration) - - // CheckCompatibility checks the compatiblity for the given messages. - // It will return an error if any of the given messages are not compatible. - CheckCompatiblity(msgs ...Message) error - - // Close closes the API channel and releases all API channel-related resources in the ChannelProvider. - Close() -} - -// RequestCtx is helper interface which allows to receive reply on request. -type RequestCtx interface { - // ReceiveReply receives a reply from VPP (blocks until a reply is delivered from VPP, or until an error occurs). - // The reply will be decoded into the msg argument. Error will be returned if the response cannot be received or decoded. - ReceiveReply(msg Message) error -} - -// MultiRequestCtx is helper interface which allows to receive reply on multi-request. -type MultiRequestCtx interface { - // ReceiveReply receives a reply from VPP (blocks until a reply is delivered from VPP, or until an error occurs). - // The reply will be decoded into the msg argument. If the last reply has been already consumed, lastReplyReceived is - // set to true. Do not use the message itself if lastReplyReceived is true - it won't be filled with actual data. - // Error will be returned if the response cannot be received or decoded. - ReceiveReply(msg Message) (lastReplyReceived bool, err error) -} - -// SubscriptionCtx is helper interface which allows to control subscription for notification events. -type SubscriptionCtx interface { - // Unsubscribe unsubscribes from receiving the notifications tied to the subscription context. - Unsubscribe() error -} - -var registeredMessages = make(map[string]Message) +var ( + registeredMessageTypes = make(map[reflect.Type]string) + registeredMessages = make(map[string]Message) +) // RegisterMessage is called from generated code to register message. func RegisterMessage(x Message, name string) { - name = x.GetMessageName() + "_" + x.GetCrcString() - /*if _, ok := registeredMessages[name]; ok { - panic(fmt.Errorf("govpp: duplicate message registered: %s (%s)", name, x.GetCrcString())) - }*/ - registeredMessages[name] = x + typ := reflect.TypeOf(x) + namecrc := x.GetMessageName() + "_" + x.GetCrcString() + if _, ok := registeredMessageTypes[typ]; ok { + panic(fmt.Errorf("govpp: message type %v already registered as %s (%s)", typ, name, namecrc)) + } + registeredMessages[namecrc] = x + registeredMessageTypes[typ] = name } // GetRegisteredMessages returns list of all registered messages. @@ -131,6 +76,12 @@ func GetRegisteredMessages() map[string]Message { return registeredMessages } -// GoVppAPIPackageIsVersion1 is referenced from generated binapi files +// GetRegisteredMessageTypes returns list of all registered message types. +func GetRegisteredMessageTypes() map[reflect.Type]string { + return registeredMessageTypes +} + +// GoVppAPIPackageIsVersionX is referenced from generated binapi files // to assert that that code is compatible with this version of the GoVPP api package. const GoVppAPIPackageIsVersion1 = true +const GoVppAPIPackageIsVersion2 = true