From ac971c56d114411324175919f82eb0fae3c38117 Mon Sep 17 00:00:00 2001
From: Bruce MacDonald <brucewmacdonald@gmail.com>
Date: Wed, 9 Aug 2023 10:40:46 -0400
Subject: [PATCH] Update images.go

---
 server/images.go | 107 -----------------------------------------------
 1 file changed, 107 deletions(-)

diff --git a/server/images.go b/server/images.go
index 01a71997..22b0a74e 100644
--- a/server/images.go
+++ b/server/images.go
@@ -14,7 +14,6 @@ import (
 	"math"
 	"net/http"
 	"os"
-	"path"
 	"path/filepath"
 	"reflect"
 	"strconv"
@@ -1143,112 +1142,6 @@ func uploadBlobChunked(mp ModelPath, url string, layer *Layer, regOpts *Registry
 	return nil
 }
 
-func downloadBlob(mp ModelPath, digest string, regOpts *RegistryOptions, fn func(api.ProgressResponse)) error {
-	fp, err := GetBlobsPath(digest)
-	if err != nil {
-		return err
-	}
-
-	if fi, _ := os.Stat(fp); fi != nil {
-		// we already have the file, so return
-		fn(api.ProgressResponse{
-			Digest:    digest,
-			Total:     int(fi.Size()),
-			Completed: int(fi.Size()),
-		})
-
-		return nil
-	}
-
-	var size int64
-	chunkSize := 1024 * 1024 // 1 MiB in bytes
-
-	fi, err := os.Stat(fp + "-partial")
-	switch {
-	case errors.Is(err, os.ErrNotExist):
-		// noop, file doesn't exist so create it
-	case err != nil:
-		return fmt.Errorf("stat: %w", err)
-	default:
-		size = fi.Size()
-		// Ensure the size is divisible by the chunk size by removing excess bytes
-		size -= size % int64(chunkSize)
-
-		err := os.Truncate(fp+"-partial", size)
-		if err != nil {
-			return fmt.Errorf("truncate: %w", err)
-		}
-	}
-
-	url := fmt.Sprintf("%s/v2/%s/blobs/%s", mp.Registry, mp.GetNamespaceRepository(), digest)
-	headers := map[string]string{
-		"Range": fmt.Sprintf("bytes=%d-", size),
-	}
-
-	resp, err := makeRequest("GET", url, headers, nil, regOpts)
-	if err != nil {
-		log.Printf("couldn't download blob: %v", err)
-		return err
-	}
-	defer resp.Body.Close()
-
-	if resp.StatusCode != http.StatusOK && resp.StatusCode != http.StatusPartialContent {
-		body, _ := io.ReadAll(resp.Body)
-		return fmt.Errorf("on download registry responded with code %d: %v", resp.StatusCode, string(body))
-	}
-
-	err = os.MkdirAll(path.Dir(fp), 0o700)
-	if err != nil {
-		return fmt.Errorf("make blobs directory: %w", err)
-	}
-
-	out, err := os.OpenFile(fp+"-partial", os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0o644)
-	if err != nil {
-		return fmt.Errorf("open file: %w", err)
-	}
-	defer out.Close()
-
-	remaining, _ := strconv.ParseInt(resp.Header.Get("Content-Length"), 10, 64)
-	completed := size
-	total := remaining + completed
-
-	for {
-		fn(api.ProgressResponse{
-			Status:    fmt.Sprintf("pulling %s...", digest[7:19]),
-			Digest:    digest,
-			Total:     int(total),
-			Completed: int(completed),
-		})
-
-		if completed >= total {
-			if err := out.Close(); err != nil {
-				return err
-			}
-
-			if err := os.Rename(fp+"-partial", fp); err != nil {
-				fn(api.ProgressResponse{
-					Status:    fmt.Sprintf("error renaming file: %v", err),
-					Digest:    digest,
-					Total:     int(total),
-					Completed: int(completed),
-				})
-				return err
-			}
-
-			break
-		}
-
-		n, err := io.CopyN(out, resp.Body, int64(chunkSize))
-		if err != nil && !errors.Is(err, io.EOF) {
-			return err
-		}
-		completed += n
-	}
-
-	log.Printf("success getting %s\n", digest)
-	return nil
-}
-
 func makeRequest(method, url string, headers map[string]string, body io.Reader, regOpts *RegistryOptions) (*http.Response, error) {
 	if !strings.HasPrefix(url, "http") {
 		if regOpts.Insecure {