Gabriel Radureau
875eb09fb7
- Added /api/v2/greet POST endpoint with JSON request/response - Implemented ServiceV2 with Hello my friend <name>! greeting format - Added api.v2_enabled feature flag (default: false) - Extended BDD tests to cover v2 scenarios - Maintained full backward compatibility with v1 API - Added DLC_API_V2_ENABLED environment variable support - Created ADR 0010-api-v2-feature-flag.md - Updated configuration system to support API versioning
68 lines
1.5 KiB
Go
68 lines
1.5 KiB
Go
package greet
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import (
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"context"
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"encoding/json"
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"io"
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"net/http"
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"github.com/go-chi/chi/v5"
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"github.com/rs/zerolog/log"
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)
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type GreeterV2 interface {
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GreetV2(ctx context.Context, name string) string
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}
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type ApiV2Greet interface {
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RegisterRoutes(router chi.Router)
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}
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type apiV2GreetHandler struct {
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greeter GreeterV2
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}
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func NewApiV2GreetHandler(greeter GreeterV2) ApiV2Greet {
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return &apiV2GreetHandler{greeter: greeter}
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}
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func (h *apiV2GreetHandler) RegisterRoutes(router chi.Router) {
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log.Trace().Msg("Registering v2 greet routes")
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router.Post("/", h.handleGreetPost)
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log.Trace().Msg("v2 Greet routes registered")
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}
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type greetRequest struct {
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Name string `json:"name"`
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}
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type greetResponse struct {
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Message string `json:"message"`
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}
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func (h *apiV2GreetHandler) handleGreetPost(w http.ResponseWriter, r *http.Request) {
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// Read request body
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body, err := io.ReadAll(r.Body)
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if err != nil {
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http.Error(w, `{"error":"failed to read request body"}`, http.StatusBadRequest)
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return
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}
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// Parse JSON
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var req greetRequest
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if err := json.Unmarshal(body, &req); err != nil {
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http.Error(w, `{"error":"invalid JSON format"}`, http.StatusBadRequest)
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return
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}
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// Call service
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message := h.greeter.GreetV2(r.Context(), req.Name)
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// Write response
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h.writeJSONResponse(w, message)
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}
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func (h *apiV2GreetHandler) writeJSONResponse(w http.ResponseWriter, message string) {
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w.Header().Set("Content-Type", "application/json")
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json.NewEncoder(w).Encode(greetResponse{Message: message})
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} |