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	# Fix OCI artifact uploads with`oras` ## Problem ORAS (OCI Registry As Storage) artifact uploads were failing with several HTTP-related errors when pushing to Forgejo's container registry. This prevented users from storing OCI artifacts like `artifacthub-repo.yaml` in commands like `oras push [...] artifacthub-repo.yaml:application/vnd.cncf.artifacthub.repository-metadata.layer.v1.yaml`. This has been discussed previously in https://github.com/go-gitea/gitea/issues/25846 ## Root Causes and Fixes ### 1. Missing Content-Length for Empty Blobs **Issue**: Empty blobs (size 0) were not getting the required `Content-Length: 0` header, causing ORAS to fail with "unknown response Content-Length". **Fix**: Changed the condition in `setResponseHeaders` from `if h.ContentLength != 0` to `if h.ContentLength >= 0` to ensure the Content-Length header is always set for valid blob sizes. ```go // Before if h.ContentLength != 0 { resp.Header().Set("Content-Length", strconv.FormatInt(h.ContentLength, 10)) } // After if h.ContentLength >= 0 { resp.Header().Set("Content-Length", strconv.FormatInt(h.ContentLength, 10)) } ``` ### 2. Content-Length Mismatch in JSON Error Responses **Issue**: The `jsonResponse` function was calling `WriteHeader()` before writing JSON content, causing "wrote more than the declared Content-Length" errors when the HTTP stack calculated a different Content-Length than what was actually written. **Fix**: Modified `jsonResponse` to buffer JSON content first, calculate the exact Content-Length, then write the complete response. ### 3. Incomplete HTTP Responses in Error Handling **Issue**: The `apiError` function was only setting response headers without writing any response body, causing EOF errors when clients expected a complete HTTP response. **Fix**: Updated `apiError` to write proper JSON error responses following the OCI Distribution Specification format with `code` and `message` fields. ### 4. Empty Config Blob Handling for OCI Artifacts **Issue**: OCI artifacts often have empty config blobs (required by spec but contain no data). The JSON decoder was failing with EOF when trying to parse these empty configs. **Fix**: Added EOF handling in `parseOCIImageConfig` to return a valid default metadata object for empty config blobs. ```go if err := json.NewDecoder(r).Decode(&image); err != nil { // Handle empty config blobs (common in OCI artifacts) if err == io.EOF { return &Metadata{ Type: TypeOCI, Platform: DefaultPlatform, }, nil } return nil, err } ``` ## Testing Verified that ORAS artifact uploads now work correctly: ```bash oras push registry/owner/package:artifacthub.io \ --config /dev/null:application/vnd.cncf.artifacthub.config.v1+yaml \ artifacthub-repo.yaml:application/vnd.cncf.artifacthub.repository-metadata.layer.v1.yaml ``` ### Tests - I added test coverage for Go changes... - [x] in their respective `*_test.go` for unit tests. - [ ] in the `tests/integration` directory if it involves interactions with a live Forgejo server. - I added test coverage for JavaScript changes... - [ ] in `web_src/js/*.test.js` if it can be unit tested. - [ ] in `tests/e2e/*.test.e2e.js` if it requires interactions with a live Forgejo server (see also the [developer guide for JavaScript testing](https://codeberg.org/forgejo/forgejo/src/branch/forgejo/tests/e2e/README.md#end-to-end-tests)). ### Documentation - [ ] I created a pull request [to the documentation](https://codeberg.org/forgejo/docs) to explain to Forgejo users how to use this change. - [x] I did not document these changes and I do not expect someone else to do it. ### Release notes - [ ] I do not want this change to show in the release notes. - [x] I want the title to show in the release notes with a link to this pull request. - [ ] I want the content of the `release-notes/<pull request number>.md` to be be used for the release notes instead of the title. Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/8070 Reviewed-by: Earl Warren <earl-warren@noreply.codeberg.org> Co-authored-by: pat-s <patrick.schratz@gmail.com> Co-committed-by: pat-s <patrick.schratz@gmail.com>
		
			
				
	
	
		
			467 lines
		
	
	
	
		
			12 KiB
		
	
	
	
		
			Jsonnet
		
	
	
	
	
	
			
		
		
	
	
			467 lines
		
	
	
	
		
			12 KiB
		
	
	
	
		
			Jsonnet
		
	
	
	
	
	
| local grafana = import 'github.com/grafana/grafonnet-lib/grafonnet/grafana.libsonnet';
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| local prometheus = grafana.prometheus;
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| 
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| local addIssueLabelsOverrides(labels) =
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|   {
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|     fieldConfig+: {
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|       overrides+: [
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|         {
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|           matcher: {
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|             id: 'byRegexp',
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|             options: label.label,
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|           },
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|           properties: [
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|             {
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|               id: 'color',
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|               value: {
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|                 fixedColor: label.color,
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|                 mode: 'fixed',
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|               },
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|             },
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|           ],
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|         }
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|         for label in labels
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|       ],
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|     },
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|   };
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| 
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| {
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| 
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|   grafanaDashboards+:: {
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| 
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|     local giteaSelector = 'job=~"$job", instance=~"$instance"',
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|     local giteaStatsPanel =
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|       grafana.statPanel.new(
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|         'Gitea stats',
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|         datasource='$datasource',
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|         reducerFunction='lastNotNull',
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|         graphMode='none',
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|         colorMode='value',
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|       )
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|       .addTargets(
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|         [
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|           prometheus.target(expr='%s{%s}' % [metric.name, giteaSelector], legendFormat=metric.description, intervalFactor=10)
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|           for metric in $._config.giteaStatMetrics
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|         ]
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|       )
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|       + {
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|         fieldConfig+: {
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|           defaults+: {
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|             color: {
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|               fixedColor: 'blue',
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|               mode: 'fixed',
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|             },
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|           },
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|         },
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|       },
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| 
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|     local giteaUptimePanel =
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|       grafana.statPanel.new(
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|         'Uptime',
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|         datasource='$datasource',
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|         reducerFunction='last',
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|         graphMode='area',
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|         colorMode='value',
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|       )
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|       .addTarget(prometheus.target(expr='time()-process_start_time_seconds{%s}' % giteaSelector, intervalFactor=1))
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|       + {
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|         fieldConfig+: {
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|           defaults+: {
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|             color: {
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|               fixedColor: 'blue',
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|               mode: 'fixed',
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|             },
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|             unit: 's',
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|           },
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|         },
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|       },
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| 
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|     local giteaMemoryPanel =
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|       grafana.graphPanel.new(
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|         'Memory usage',
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|         datasource='$datasource'
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|       )
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|       .addTarget(prometheus.target(expr='process_resident_memory_bytes{%s}' % giteaSelector, intervalFactor=2))
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|       + {
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|         type: 'timeseries',
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|         options+: {
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|           tooltip: {
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|             mode: 'multi',
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|           },
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|           legend+: {
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|             displayMode: 'hidden',
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|           },
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|         },
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|         fieldConfig+: {
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|           defaults+: {
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|             custom+: {
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|               lineInterpolation: 'smooth',
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|               fillOpacity: 15,
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|             },
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|             color: {
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|               fixedColor: 'green',
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|               mode: 'fixed',
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|             },
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|             unit: 'decbytes',
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|           },
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|         },
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|       },
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| 
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|     local giteaCpuPanel =
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|       grafana.graphPanel.new(
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|         'CPU usage',
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|         datasource='$datasource'
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|       )
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|       .addTarget(prometheus.target(expr='rate(process_cpu_seconds_total{%s}[$__rate_interval])*100' % giteaSelector, intervalFactor=2))
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|       + {
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|         type: 'timeseries',
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|         options+: {
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|           tooltip: {
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|             mode: 'multi',
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|           },
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|           legend+: {
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|             displayMode: 'hidden',
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|           },
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|         },
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|         fieldConfig+: {
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|           defaults+: {
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|             custom+: {
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|               lineInterpolation: 'smooth',
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|               gradientMode: 'scheme',
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|               fillOpacity: 15,
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|               axisSoftMin: 0,
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|               axisSoftMax: 0,
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|             },
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|             color: {
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|               mode: 'continuous-GrYlRd',  // from green to red (100%)
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|             },
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|             unit: 'percent',
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|           },
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|           overrides: [
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|             {
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|               matcher: {
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|                 id: 'byRegexp',
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|                 options: '.+',
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|               },
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|               properties: [
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|                 {
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|                   id: 'max',
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|                   value: 100,
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|                 },
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|                 {
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|                   id: 'min',
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|                   value: 0,
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|                 },
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|               ],
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|             },
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|           ],
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|         },
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|       },
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| 
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|     local giteaFileDescriptorsPanel =
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|       grafana.graphPanel.new(
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|         'File descriptors usage',
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|         datasource='$datasource',
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|       )
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|       .addTarget(prometheus.target(expr='process_open_fds{%s}' % giteaSelector, intervalFactor=2))
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|       .addTarget(prometheus.target(expr='process_max_fds{%s}' % giteaSelector, intervalFactor=2))
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|       .addSeriesOverride(
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|         {
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|           alias: '/process_max_fds.+/',
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|           color: '#F2495C',  // red
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|           dashes: true,
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|           fill: 0,
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|         },
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|       )
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|       + {
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|         type: 'timeseries',
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|         options+: {
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|           tooltip: {
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|             mode: 'multi',
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|           },
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|           legend+: {
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|             displayMode: 'hidden',
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|           },
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|         },
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|         fieldConfig+: {
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|           defaults+: {
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|             custom+: {
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|               lineInterpolation: 'smooth',
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|               gradientMode: 'scheme',
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|               fillOpacity: 0,
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|             },
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|             color: {
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|               fixedColor: 'green',
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|               mode: 'fixed',
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|             },
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|             unit: '',
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|           },
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|           overrides: [
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|             {
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|               matcher: {
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|                 id: 'byFrameRefID',
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|                 options: 'B',
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|               },
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|               properties: [
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|                 {
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|                   id: 'custom.lineStyle',
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|                   value: {
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|                     fill: 'dash',
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|                     dash: [
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|                       10,
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|                       10,
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|                     ],
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|                   },
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|                 },
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|                 {
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|                   id: 'color',
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|                   value: {
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|                     mode: 'fixed',
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|                     fixedColor: 'red',
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|                   },
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|                 },
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|               ],
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|             },
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|           ],
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|         },
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|       },
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| 
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|     local giteaChangesPanelPrototype =
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|       grafana.graphPanel.new(
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|         '',
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|         datasource='$datasource',
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|         interval='$agg_interval',
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|         maxDataPoints=10000,
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|       )
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|       + {
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|         type: 'timeseries',
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|         options+: {
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|           tooltip: {
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|             mode: 'multi',
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|           },
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|           legend+: {
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|             calcs+: [
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|               'sum',
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|             ],
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|           },
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|         },
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|         fieldConfig+: {
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|           defaults+: {
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|             noValue: '0',
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|             custom+: {
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|               drawStyle: 'bars',
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|               barAlignment: -1,
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|               fillOpacity: 50,
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|               gradientMode: 'hue',
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|               pointSize: 1,
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|               lineWidth: 0,
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|               stacking: {
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|                 group: 'A',
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|                 mode: 'normal',
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|               },
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|             },
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|           },
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|         },
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|       },
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| 
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|     local giteaChangesPanelAll =
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|       giteaChangesPanelPrototype
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|       .addTarget(prometheus.target(expr='changes(process_start_time_seconds{%s}[$__interval]) > 0' % [giteaSelector], legendFormat='Restarts', intervalFactor=1))
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|       .addTargets(
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|         [
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|           prometheus.target(expr='floor(delta(%s{%s}[$__interval])) > 0' % [metric.name, giteaSelector], legendFormat=metric.description, intervalFactor=1)
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|           for metric in $._config.giteaStatMetrics
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|         ]
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|       ) + { id: 200 },  // some unique number, beyond the maximum number of panels in the dashboard,
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| 
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|     local giteaChangesPanelTotal =
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|       grafana.statPanel.new(
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|         'Changes',
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|         datasource='-- Dashboard --',
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|         reducerFunction='sum',
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|         graphMode='none',
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|         textMode='value_and_name',
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|         colorMode='value',
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|       )
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|       + {
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|         targets+: [
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|           {
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|             panelId: giteaChangesPanelAll.id,
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|             refId: 'A',
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|           },
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|         ],
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|       }
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|       + {
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|         fieldConfig+: {
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|           defaults+: {
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|             color: {
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|               mode: 'palette-classic',
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|             },
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|           },
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|         },
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|       },
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| 
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|     local giteaChangesByRepositories =
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|       giteaChangesPanelPrototype
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|       .addTarget(prometheus.target(expr='floor(increase(gitea_issues_by_repository{%s}[$__interval])) > 0' % [giteaSelector], legendFormat='{{ repository }}', intervalFactor=1))
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|       + { id: 210 },  // some unique number, beyond the maximum number of panels in the dashboard,
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| 
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|     local giteaChangesByRepositoriesTotal =
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|       grafana.statPanel.new(
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|         'Issues by repository',
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|         datasource='-- Dashboard --',
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|         reducerFunction='sum',
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|         graphMode='none',
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|         textMode='value_and_name',
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|         colorMode='value',
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|       )
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|       + {
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|         id: 211,
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|         targets+: [
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|           {
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|             panelId: giteaChangesByRepositories.id,
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|             refId: 'A',
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|           },
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|         ],
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|       }
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|       + {
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|         fieldConfig+: {
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|           defaults+: {
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|             color: {
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|               mode: 'palette-classic',
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|             },
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|           },
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|         },
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|       },
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| 
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|     local giteaChangesByLabel =
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|       giteaChangesPanelPrototype
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|       .addTarget(prometheus.target(expr='floor(increase(gitea_issues_by_label{%s}[$__interval])) > 0' % [giteaSelector], legendFormat='{{ label }}', intervalFactor=1))
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|       + addIssueLabelsOverrides($._config.issueLabels)
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|       + { id: 220 },  // some unique number, beyond the maximum number of panels in the dashboard,
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| 
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|     local giteaChangesByLabelTotal =
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|       grafana.statPanel.new(
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|         'Issues by labels',
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|         datasource='-- Dashboard --',
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|         reducerFunction='sum',
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|         graphMode='none',
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|         textMode='value_and_name',
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|         colorMode='value',
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|       )
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|       + addIssueLabelsOverrides($._config.issueLabels)
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|       + {
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|         id: 221,
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|         targets+: [
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|           {
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|             panelId: giteaChangesByLabel.id,
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|             refId: 'A',
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|           },
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|         ],
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|       }
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|       + {
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|         fieldConfig+: {
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|           defaults+: {
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|             color: {
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|               mode: 'palette-classic',
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|             },
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|           },
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|         },
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|       },
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| 
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|     'gitea-overview.json':
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|       grafana.dashboard.new(
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|         '%s Overview' % $._config.dashboardNamePrefix,
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|         time_from='%s' % $._config.dashboardPeriod,
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|         editable=false,
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|         tags=($._config.dashboardTags),
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|         timezone='%s' % $._config.dashboardTimezone,
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|         refresh='%s' % $._config.dashboardRefresh,
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|         graphTooltip='shared_crosshair',
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|         uid='gitea-overview'
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|       )
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|       .addTemplate(
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|         {
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|           current: {
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|             text: 'Prometheus',
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|             value: 'Prometheus',
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|           },
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|           hide: 0,
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|           label: 'Data Source',
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|           name: 'datasource',
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|           options: [],
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|           query: 'prometheus',
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|           refresh: 1,
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|           regex: '',
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|           type: 'datasource',
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|         },
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|       )
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|       .addTemplate(
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|         {
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|           hide: 0,
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|           label: 'job',
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|           name: 'job',
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|           options: [],
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|           datasource: '$datasource',
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|           query: 'label_values(gitea_organizations, job)',
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|           refresh: 1,
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|           regex: '',
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|           type: 'query',
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|           multi: true,
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|           allValue: '.+',
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|         },
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|       )
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|       .addTemplate(
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|         {
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|           hide: 0,
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|           label: 'instance',
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|           name: 'instance',
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|           options: [],
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|           datasource: '$datasource',
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|           query: 'label_values(gitea_organizations{job="$job"}, instance)',
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|           refresh: 1,
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|           regex: '',
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|           type: 'query',
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|           multi: true,
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|           allValue: '.+',
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|         },
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|       )
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|       .addTemplate(
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|         {
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|           hide: 0,
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|           label: 'aggregation interval',
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|           name: 'agg_interval',
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|           auto_min: '1m',
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|           auto: true,
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|           query: '1m,10m,1h,1d,7d',
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|           type: 'interval',
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|         },
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|       )
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|       .addPanel(grafana.row.new(title='General'), gridPos={ x: 0, y: 0, w: 0, h: 0 },)
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|       .addPanel(giteaStatsPanel, gridPos={ x: 0, y: 0, w: 16, h: 4 })
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|       .addPanel(giteaUptimePanel, gridPos={ x: 16, y: 0, w: 8, h: 4 })
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|       .addPanel(giteaMemoryPanel, gridPos={ x: 0, y: 4, w: 8, h: 6 })
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|       .addPanel(giteaCpuPanel, gridPos={ x: 8, y: 4, w: 8, h: 6 })
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|       .addPanel(giteaFileDescriptorsPanel, gridPos={ x: 16, y: 4, w: 8, h: 6 })
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|       .addPanel(grafana.row.new(title='Changes', collapse=false), gridPos={ x: 0, y: 10, w: 24, h: 8 })
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|       .addPanel(giteaChangesPanelTotal, gridPos={ x: 0, y: 12, w: 6, h: 8 })
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|       +  // use patching instead of .addPanel() to keep static ids
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|       {
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|         panels+: std.flattenArrays([
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|           [
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|             giteaChangesPanelAll { gridPos: { x: 6, y: 12, w: 18, h: 8 } },
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|           ],
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|           if $._config.showIssuesByRepository then
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|             [
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|               giteaChangesByRepositoriesTotal { gridPos: { x: 0, y: 20, w: 6, h: 8 } },
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|               giteaChangesByRepositories { gridPos: { x: 6, y: 20, w: 18, h: 8 } },
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|             ] else [],
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|           if $._config.showIssuesByLabel then
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|             [
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|               giteaChangesByLabelTotal { gridPos: { x: 0, y: 28, w: 6, h: 8 } },
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|               giteaChangesByLabel { gridPos: { x: 6, y: 28, w: 18, h: 8 } },
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|             ] else [],
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|         ]),
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|       },
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|   },
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| }
 |