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Add sse support and write an example #97
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,100 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "log" | ||
| "net/http" | ||
| "sync" | ||
|
|
||
| mcp_golang "github.com/metoro-io/mcp-golang" | ||
| "github.com/metoro-io/mcp-golang/transport/sse" | ||
| ) | ||
|
|
||
| type Content struct { | ||
| Title string `json:"title" jsonschema:"required,description=The title to submit"` | ||
| Description *string `json:"description" jsonschema:"description=The description to submit"` | ||
| } | ||
| type MyFunctionsArguments struct { | ||
| Submitter string `json:"submitter" jsonschema:"required,description=The name of the thing calling this tool (openai, google, claude, etc)"` | ||
| Content Content `json:"content" jsonschema:"required,description=The content of the message"` | ||
| } | ||
|
|
||
| type HttpHandler struct{} | ||
|
|
||
| var ( | ||
| postEndpoint = "/sse" | ||
| sessionList = make(map[string]*sse.SSEServerTransport) | ||
| sessionListLock = sync.RWMutex{} // Uncomment if you need to protect sessionList from concurrent access | ||
| ) | ||
|
|
||
| func (h *HttpHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) { | ||
| log.Println("Received request:", r.Method, r.URL.Path) | ||
| // Check if the request is a POST request to the SSE endpoint | ||
| if r.Method == http.MethodPost && r.URL.Path == postEndpoint { | ||
| // get the session ID from the request header or URL parameters | ||
| sessionID := r.Header.Get("session") | ||
| if sessionID == "" { | ||
| // if not found in header, try to get it from URL parameters | ||
| sessionID = r.URL.Query().Get("sessionId") | ||
| } | ||
| if sessionID == "" { | ||
| http.Error(w, "Session ID is required", http.StatusBadRequest) | ||
| return | ||
| } | ||
| // Check if the session ID already exists in the session list | ||
| sessionListLock.RLock() | ||
| transport, exists := sessionList[sessionID] | ||
| sessionListLock.RUnlock() | ||
| if exists { | ||
| // If it exists, reuse the existing transport | ||
| log.Println("Reusing existing session:", sessionID) | ||
| transport.HandlePostMessage(r) | ||
| // response with 202 Accepted | ||
| w.WriteHeader(http.StatusAccepted) | ||
| w.Write([]byte("Accepted")) | ||
| return | ||
| } | ||
| return | ||
| } | ||
|
|
||
| transport, err := sse.NewSSEServerTransport(postEndpoint, w) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| // process the incoming POST request | ||
| server := mcp_golang.NewServer(transport) | ||
| // 自定义一个http handler来处理http请求 | ||
| err = server.RegisterTool("hello", "Say hello to a person", func(arguments MyFunctionsArguments) (*mcp_golang.ToolResponse, error) { | ||
| log.Println("Received request:", arguments) | ||
| return mcp_golang.NewToolResponse(mcp_golang.NewTextContent(fmt.Sprintf("Hello, %server!", arguments.Submitter))), nil | ||
| }) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
|
|
||
| err = server.Serve() | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| sessionListLock.Lock() | ||
| sessionList[transport.SessionID()] = transport | ||
| sessionListLock.Unlock() | ||
| <-r.Context().Done() | ||
| sessionListLock.Lock() | ||
| delete(sessionList, transport.SessionID()) | ||
| sessionListLock.Unlock() | ||
| } | ||
|
|
||
| func main() { | ||
| // Create a new HTTP server | ||
| handler := &http.Server{ | ||
| Addr: ":8080", | ||
| Handler: &HttpHandler{}, | ||
| } | ||
|
|
||
| // Start the server | ||
| fmt.Println("Starting server on :8080") | ||
| if err := handler.ListenAndServe(); err != nil { | ||
| panic(err) | ||
| } | ||
| } | ||
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The string formatting specifier '%server!' is likely incorrect. Consider replacing it with 'Hello, %s!' to properly format the submitter's name.
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