Fix uploaded artifacts should be overwritten (#28726) backport v1.21 (#28832)

Backport https://github.com/go-gitea/gitea/pull/28726 by @fuxiaohei

Fix Uploaded artifacts should be overwritten
https://github.com/go-gitea/gitea/issues/28549

When upload different content to uploaded artifact, it checks that
content size is not match in db record with previous artifact size, then
the new artifact is refused.

Now if it finds uploading content size is not matching db record when
receiving chunks, it updates db records to follow the latest size value.

routers/api/actions/artifacts.go

@@ -257,8 +257,11 @@ func (ar artifactRoutes) uploadArtifact(ctx *ArtifactContext) {
 		return
 	}
 
-	// update artifact size if zero
+	// update artifact size if zero or not match, over write artifact size
-	if artifact.FileSize == 0 || artifact.FileCompressedSize == 0 {
+	if artifact.FileSize == 0 ||
+		artifact.FileCompressedSize == 0 ||
+		artifact.FileSize != fileRealTotalSize ||
+		artifact.FileCompressedSize != chunksTotalSize {
 		artifact.FileSize = fileRealTotalSize
 		artifact.FileCompressedSize = chunksTotalSize
 		artifact.ContentEncoding = ctx.Req.Header.Get("Content-Encoding")
@@ -267,6 +270,8 @@ func (ar artifactRoutes) uploadArtifact(ctx *ArtifactContext) {
 			ctx.Error(http.StatusInternalServerError, "Error update artifact")
 			return
 		}
+		log.Debug("[artifact] update artifact size, artifact_id: %d, size: %d, compressed size: %d",
+			artifact.ID, artifact.FileSize, artifact.FileCompressedSize)
 	}
 
 	ctx.JSON(http.StatusOK, map[string]string{

routers/api/actions/artifacts_chunks.go

@@ -182,7 +182,14 @@ func mergeChunksForArtifact(ctx *ArtifactContext, chunks []*chunkFileItem, st st
 	}()
 
 	// save storage path to artifact
-	log.Debug("[artifact] merge chunks to artifact: %d, %s", artifact.ID, storagePath)
+	log.Debug("[artifact] merge chunks to artifact: %d, %s, old:%s", artifact.ID, storagePath, artifact.StoragePath)
+	// if artifact is already uploaded, delete the old file
+	if artifact.StoragePath != "" {
+		if err := st.Delete(artifact.StoragePath); err != nil {
+			log.Warn("Error deleting old artifact: %s, %v", artifact.StoragePath, err)
+		}
+	}
+
 	artifact.StoragePath = storagePath
 	artifact.Status = int64(actions.ArtifactStatusUploadConfirmed)
 	if err := actions.UpdateArtifactByID(ctx, artifact.ID, artifact); err != nil {

tests/integration/api_actions_artifact_test.go

@@ -290,3 +290,93 @@ func TestActionsArtifactUploadWithRetentionDays(t *testing.T) {
 	req = addTokenAuthHeader(req, "Bearer 8061e833a55f6fc0157c98b883e91fcfeeb1a71a")
 	MakeRequest(t, req, http.StatusOK)
 }
+
+func TestActionsArtifactOverwrite(t *testing.T) {
+	defer tests.PrepareTestEnv(t)()
+
+	{
+		// download old artifact uploaded by tests above, it should 1024 A
+		req := NewRequest(t, "GET", "/api/actions_pipeline/_apis/pipelines/workflows/791/artifacts")
+		req = addTokenAuthHeader(req, "Bearer 8061e833a55f6fc0157c98b883e91fcfeeb1a71a")
+		resp := MakeRequest(t, req, http.StatusOK)
+		var listResp listArtifactsResponse
+		DecodeJSON(t, resp, &listResp)
+
+		idx := strings.Index(listResp.Value[0].FileContainerResourceURL, "/api/actions_pipeline/_apis/pipelines/")
+		url := listResp.Value[0].FileContainerResourceURL[idx+1:] + "?itemPath=artifact"
+		req = NewRequest(t, "GET", url)
+		req = addTokenAuthHeader(req, "Bearer 8061e833a55f6fc0157c98b883e91fcfeeb1a71a")
+		resp = MakeRequest(t, req, http.StatusOK)
+		var downloadResp downloadArtifactResponse
+		DecodeJSON(t, resp, &downloadResp)
+
+		idx = strings.Index(downloadResp.Value[0].ContentLocation, "/api/actions_pipeline/_apis/pipelines/")
+		url = downloadResp.Value[0].ContentLocation[idx:]
+		req = NewRequest(t, "GET", url)
+		req = addTokenAuthHeader(req, "Bearer 8061e833a55f6fc0157c98b883e91fcfeeb1a71a")
+		resp = MakeRequest(t, req, http.StatusOK)
+		body := strings.Repeat("A", 1024)
+		assert.Equal(t, resp.Body.String(), body)
+	}
+
+	{
+		// upload same artifact, it uses 4096 B
+		req := NewRequestWithJSON(t, "POST", "/api/actions_pipeline/_apis/pipelines/workflows/791/artifacts", getUploadArtifactRequest{
+			Type: "actions_storage",
+			Name: "artifact",
+		})
+		req = addTokenAuthHeader(req, "Bearer 8061e833a55f6fc0157c98b883e91fcfeeb1a71a")
+		resp := MakeRequest(t, req, http.StatusOK)
+		var uploadResp uploadArtifactResponse
+		DecodeJSON(t, resp, &uploadResp)
+
+		idx := strings.Index(uploadResp.FileContainerResourceURL, "/api/actions_pipeline/_apis/pipelines/")
+		url := uploadResp.FileContainerResourceURL[idx:] + "?itemPath=artifact/abc.txt"
+		body := strings.Repeat("B", 4096)
+		req = NewRequestWithBody(t, "PUT", url, strings.NewReader(body))
+		req = addTokenAuthHeader(req, "Bearer 8061e833a55f6fc0157c98b883e91fcfeeb1a71a")
+		req.Header.Add("Content-Range", "bytes 0-4095/4096")
+		req.Header.Add("x-tfs-filelength", "4096")
+		req.Header.Add("x-actions-results-md5", "wUypcJFeZCK5T6r4lfqzqg==") // base64(md5(body))
+		MakeRequest(t, req, http.StatusOK)
+
+		// confirm artifact upload
+		req = NewRequest(t, "PATCH", "/api/actions_pipeline/_apis/pipelines/workflows/791/artifacts?artifactName=artifact")
+		req = addTokenAuthHeader(req, "Bearer 8061e833a55f6fc0157c98b883e91fcfeeb1a71a")
+		MakeRequest(t, req, http.StatusOK)
+	}
+
+	{
+		// download artifact again, it should 4096 B
+		req := NewRequest(t, "GET", "/api/actions_pipeline/_apis/pipelines/workflows/791/artifacts")
+		req = addTokenAuthHeader(req, "Bearer 8061e833a55f6fc0157c98b883e91fcfeeb1a71a")
+		resp := MakeRequest(t, req, http.StatusOK)
+		var listResp listArtifactsResponse
+		DecodeJSON(t, resp, &listResp)
+
+		var uploadedItem listArtifactsResponseItem
+		for _, item := range listResp.Value {
+			if item.Name == "artifact" {
+				uploadedItem = item
+				break
+			}
+		}
+		assert.Equal(t, uploadedItem.Name, "artifact")
+
+		idx := strings.Index(uploadedItem.FileContainerResourceURL, "/api/actions_pipeline/_apis/pipelines/")
+		url := uploadedItem.FileContainerResourceURL[idx+1:] + "?itemPath=artifact"
+		req = NewRequest(t, "GET", url)
+		req = addTokenAuthHeader(req, "Bearer 8061e833a55f6fc0157c98b883e91fcfeeb1a71a")
+		resp = MakeRequest(t, req, http.StatusOK)
+		var downloadResp downloadArtifactResponse
+		DecodeJSON(t, resp, &downloadResp)
+
+		idx = strings.Index(downloadResp.Value[0].ContentLocation, "/api/actions_pipeline/_apis/pipelines/")
+		url = downloadResp.Value[0].ContentLocation[idx:]
+		req = NewRequest(t, "GET", url)
+		req = addTokenAuthHeader(req, "Bearer 8061e833a55f6fc0157c98b883e91fcfeeb1a71a")
+		resp = MakeRequest(t, req, http.StatusOK)
+		body := strings.Repeat("B", 4096)
+		assert.Equal(t, resp.Body.String(), body)
+	}
+}