[server] Allow creating empty resources

server/internal/api/v1/fs/create_file.go

@@ -0,0 +1,93 @@
+package fs
+
+import (
+	"errors"
+	"io"
+	"net/http"
+
+	"codeberg.org/shroff/phylum/server/internal/api/authenticator"
+	"codeberg.org/shroff/phylum/server/internal/api/v1/responses"
+	"codeberg.org/shroff/phylum/server/internal/core"
+	"github.com/gin-gonic/gin"
+	"github.com/google/uuid"
+)
+
+type createFileParams struct {
+	Path          string                              `json:"path" form:"path" binding:"required"`
+	ID            string                              `json:"id" form:"id" binding:"omitempty,uuid"`
+	VersionID     string                              `json:"version_id" form:"version_id" binding:"omitempty,uuid"`
+	CreateParents bool                                `json:"create_parents" form:"create_parents"`
+	Conflict      core.ResourceBindConflictResolution `json:"conflict" form:"conflict"`
+	SHA256        string                              `json:"sha256" form:"sha256"`
+}
+
+func handleCreateFileRequest(c *gin.Context) {
+	var params createFileParams
+	err := c.ShouldBindQuery(&params)
+	if err != nil {
+		panic(err)
+	}
+	var id uuid.UUID
+	var versionID uuid.UUID
+	if params.ID != "" {
+		id, err = uuid.Parse(params.ID)
+		if err != nil {
+			panic(err)
+		}
+	}
+	if params.VersionID != "" {
+		versionID, err = uuid.Parse(params.VersionID)
+		if err != nil {
+			panic(err)
+		}
+	}
+
+	// TODO: Calculate and verify sha sum
+
+	f := authenticator.GetFileSystem(c)
+
+	file, err := c.FormFile("contents")
+	if err != nil {
+		if !errors.Is(err, http.ErrMissingFile) {
+			panic(err)
+		}
+
+		r, err := f.CreateResourceByPath(params.Path, id, false, false, params.Conflict)
+		if err != nil && !errors.Is(err, core.ErrIDConflict) {
+			panic(err)
+		}
+		c.JSON(200, responses.ResourceFromFS(r))
+		return
+	}
+
+	err = func() error {
+		// TODO: #perf disk I/O in tx
+		src, err := file.Open()
+		if err != nil {
+			return err
+		}
+		defer src.Close()
+
+		out, err := f.CreateFileByPath(params.Path, id, versionID, params.Conflict)
+		if err != nil {
+			return err
+		}
+
+		if _, err := io.Copy(out, src); err != nil {
+			out.Close()
+			return err
+		} else {
+			return out.Close()
+		}
+	}()
+	if err != nil && !errors.Is(err, core.ErrIDConflict) {
+		panic(err)
+	}
+
+	// id may have changed if this is an overwrite
+	r, err := f.ResourceByPathWithRoot(params.Path)
+	if err != nil {
+		panic(err)
+	}
+	c.JSON(200, responses.ResourceFromFS(r))
+}

server/internal/api/v1/fs/routes.go

@@ -27,6 +27,7 @@ func SetupRoutes(r *gin.RouterGroup) {
 	group.POST("/delete_version", handleDeleteVersionRequest)
 
 	group.POST("/mkdir", handleMkdirRequest)
+	group.POST("/create_file", handleCreateFileRequest)
 	group.PUT("/upload", handleUploadRequest)
 
 	group.GET("/search", handleSearchRequest)