ui
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Sotig
276
api/cmd/actions.go
Normal file
276
api/cmd/actions.go
Normal file
@@ -0,0 +1,276 @@
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package main
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import (
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"encoding/json"
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"fmt"
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"io"
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"log"
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"net/http"
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"os"
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"path/filepath"
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"strconv"
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"strings"
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"time"
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"github.com/google/uuid"
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"github.com/sotigr/slic3r-api/internal/cache"
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"github.com/sotigr/slic3r-api/internal/slicer"
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"github.com/sotigr/slic3r-api/internal/thumbnail"
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)
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var allowedModelExtensions = map[string]bool{
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".stl": true,
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".3mf": true,
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".obj": true,
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".amf": true,
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}
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func getEnvOrDefault(key, defaultVal string) string {
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if v := os.Getenv(key); v != "" {
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return v
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}
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return defaultVal
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}
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func actions(mux *http.ServeMux) {
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slicerSvc := slicer.NewSlicerService(
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getEnvOrDefault("FFF_CONFIG_PATH", "configs/p1s-cfg.ini"),
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getEnvOrDefault("SLA_CONFIG_PATH", "configs/gktwo-sla-cfg.ini"),
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)
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thumbnailSvc := thumbnail.NewThumbnailService()
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var c cache.Cache
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if url := getEnvOrDefault("VALKEY_URL", ""); url != "" {
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vc, err := cache.NewValkeyCache(url)
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if err != nil {
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log.Printf("cache: failed to connect to Valkey at %s: %v — running without cache", url, err)
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c = cache.NewNoopCache()
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} else {
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log.Printf("cache: connected to Valkey at %s", url)
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c = vc
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}
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} else {
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log.Print("cache: VALKEY_URL not set — running without cache")
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c = cache.NewNoopCache()
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}
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cacheTTL := 24 * time.Hour
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if s := getEnvOrDefault("CACHE_TTL_SECONDS", ""); s != "" {
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if v, err := strconv.ParseInt(s, 10, 64); err == nil && v > 0 {
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cacheTTL = time.Duration(v) * time.Second
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}
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}
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mux.HandleFunc("/health", func(w http.ResponseWriter, r *http.Request) {
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if r.Method != http.MethodGet {
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http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
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return
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}
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w.WriteHeader(http.StatusOK)
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w.Write([]byte("OK"))
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})
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mux.HandleFunc("/analyze-fff", func(w http.ResponseWriter, r *http.Request) {
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if r.Method != http.MethodPost {
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http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
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return
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}
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modelPath, cleanup, err := saveUploadedFile(r, "file")
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if err != nil {
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http.Error(w, fmt.Sprintf("failed to read file: %v", err), http.StatusBadRequest)
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return
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}
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defer cleanup()
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opts, err := parseAnalyzeOptions(r)
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if err != nil {
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http.Error(w, fmt.Sprintf("invalid options: %v", err), http.StatusBadRequest)
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return
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}
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fileHash, err := cache.HashFile(modelPath)
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if err != nil {
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http.Error(w, "failed to hash file", http.StatusInternalServerError)
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return
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}
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key := cache.AnalysisKey("fff", fileHash, opts.Scale)
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if cached, ok := c.Get(r.Context(), key); ok {
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w.Header().Set("Content-Type", "application/json")
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w.WriteHeader(http.StatusOK)
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w.Write(cached)
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return
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}
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result, err := slicerSvc.AnalyzeFFF(modelPath, opts)
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if err != nil {
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http.Error(w, fmt.Sprintf("analysis failed: %v", err), http.StatusInternalServerError)
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return
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}
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payload, _ := json.Marshal(result)
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c.Set(r.Context(), key, payload, cacheTTL)
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w.Header().Set("Content-Type", "application/json")
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w.WriteHeader(http.StatusOK)
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w.Write(payload)
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})
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mux.HandleFunc("/analyze-sla", func(w http.ResponseWriter, r *http.Request) {
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if r.Method != http.MethodPost {
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http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
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return
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}
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modelPath, cleanup, err := saveUploadedFile(r, "file")
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if err != nil {
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http.Error(w, fmt.Sprintf("failed to read file: %v", err), http.StatusBadRequest)
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return
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}
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defer cleanup()
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opts, err := parseAnalyzeOptions(r)
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if err != nil {
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http.Error(w, fmt.Sprintf("invalid options: %v", err), http.StatusBadRequest)
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return
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}
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fileHash, err := cache.HashFile(modelPath)
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if err != nil {
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http.Error(w, "failed to hash file", http.StatusInternalServerError)
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return
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}
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key := cache.AnalysisKey("sla", fileHash, opts.Scale)
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if cached, ok := c.Get(r.Context(), key); ok {
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w.Header().Set("Content-Type", "application/json")
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w.WriteHeader(http.StatusOK)
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w.Write(cached)
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return
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}
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result, err := slicerSvc.AnalyzeSLA(modelPath, opts)
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if err != nil {
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http.Error(w, fmt.Sprintf("analysis failed: %v", err), http.StatusInternalServerError)
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return
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}
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payload, _ := json.Marshal(result)
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c.Set(r.Context(), key, payload, cacheTTL)
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w.Header().Set("Content-Type", "application/json")
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w.WriteHeader(http.StatusOK)
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w.Write(payload)
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})
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mux.HandleFunc("/thumbnail", func(w http.ResponseWriter, r *http.Request) {
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if r.Method != http.MethodPost {
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http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
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return
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}
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modelPath, cleanup, err := saveUploadedFile(r, "file")
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if err != nil {
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http.Error(w, fmt.Sprintf("failed to read file: %v", err), http.StatusBadRequest)
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return
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}
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defer cleanup()
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fileHash, err := cache.HashFile(modelPath)
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if err != nil {
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http.Error(w, "failed to hash file", http.StatusInternalServerError)
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return
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}
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key := cache.ThumbnailKey(fileHash)
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if cached, ok := c.Get(r.Context(), key); ok {
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w.Header().Set("Content-Type", "image/webp")
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w.WriteHeader(http.StatusOK)
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w.Write(cached)
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return
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}
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outputPath := filepath.Join(filepath.Dir(modelPath), "thumbnail.webp")
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if err := thumbnailSvc.Generate(r.Context(), modelPath, outputPath); err != nil {
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http.Error(w, fmt.Sprintf("thumbnail generation failed: %v", err), http.StatusInternalServerError)
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return
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}
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pngData, err := os.ReadFile(outputPath)
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os.Remove(outputPath)
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if err != nil {
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http.Error(w, "failed to read generated thumbnail", http.StatusInternalServerError)
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return
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}
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c.Set(r.Context(), key, pngData, cacheTTL)
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w.Header().Set("Content-Type", "image/webp")
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w.WriteHeader(http.StatusOK)
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w.Write(pngData)
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})
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}
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// saveUploadedFile reads the named file field from a multipart request and saves it to a
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// temporary directory. Returns the saved path and a cleanup function to remove the directory.
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func saveUploadedFile(r *http.Request, field string) (string, func(), error) {
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const maxUploadSize = 512 << 20 // 64 MB
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if err := r.ParseMultipartForm(maxUploadSize); err != nil {
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return "", nil, fmt.Errorf("parse multipart form: %w", err)
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}
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file, header, err := r.FormFile(field)
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if err != nil {
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return "", nil, fmt.Errorf("get form field %q: %w", field, err)
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}
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defer file.Close()
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origName := filepath.Base(header.Filename)
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ext := strings.ToLower(filepath.Ext(origName))
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if !allowedModelExtensions[ext] {
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return "", nil, fmt.Errorf("unsupported file format %q, allowed: .stl .3mf .obj .amf", ext)
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}
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tmpDir, err := os.MkdirTemp("", "upload-*")
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if err != nil {
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return "", nil, fmt.Errorf("create temp dir: %w", err)
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}
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cleanup := func() { os.RemoveAll(tmpDir) }
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dst := filepath.Join(tmpDir, uuid.New().String()+ext)
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f, err := os.Create(dst)
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if err != nil {
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cleanup()
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return "", nil, fmt.Errorf("create temp file: %w", err)
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}
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defer f.Close()
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if _, err := io.Copy(f, file); err != nil {
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cleanup()
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return "", nil, fmt.Errorf("write uploaded file: %w", err)
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}
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return dst, cleanup, nil
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}
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// parseAnalyzeOptions reads optional analysis parameters from the multipart form.
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// Supported fields: scale (float, e.g. "1.5" = 150% size).
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func parseAnalyzeOptions(r *http.Request) (slicer.AnalyzeOptions, error) {
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var opts slicer.AnalyzeOptions
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if s := r.FormValue("scale"); s != "" {
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scale, err := strconv.ParseFloat(s, 64)
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if err != nil || scale <= 0 {
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return opts, fmt.Errorf("scale must be a positive number of millimeters, got %q", s)
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}
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opts.Scale = scale
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}
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return opts, nil
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}
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func writeJSON(w http.ResponseWriter, v any) {
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w.Header().Set("Content-Type", "application/json")
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w.WriteHeader(http.StatusOK)
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json.NewEncoder(w).Encode(v)
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}
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