81 lines
2.5 KiB
Markdown
81 lines
2.5 KiB
Markdown
# Migration
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- [Migration](#migration)
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- [Multiple uploads to the same named Artifact](#multiple-uploads-to-the-same-named-artifact)
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Several behavioral differences exist between Artifact actions `v3` and below vs `v4`. This document outlines common scenarios in `v3`, and how they would be handled in `v4`.
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## Multiple uploads to the same named Artifact
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In `v3`, Artifacts are _mutable_ so it's possible to write workflow scenarios where multiple jobs upload to the same Artifact like so:
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```yaml
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jobs:
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upload:
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strategy:
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matrix:
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runs-on: [ubuntu-latest, macos-latest, windows-latest]
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runs-on: ${{ matrix.runs-on }}
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steps:
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- name: Create a File
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run: echo "hello from ${{ matrix.runs-on }}" > file-${{ matrix.runs-on }}.txt
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- name: Upload Artifact
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uses: actions/upload-artifact@v3
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with:
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name: my-artifact # NOTE: same artifact name
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path: file-${{ matrix.runs-on }}.txt
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download:
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needs: upload
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runs-on: ubuntu-latest
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steps:
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- name: Download All Artifacts
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uses: actions/download-artifact@v3
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with:
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path: my-artifact
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- run: ls -R my-artifact
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```
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This results in a directory like so:
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```
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my-artifact/
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file-macos-latest.txt
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file-ubuntu-latest.txt
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file-windows-latest.txt
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```
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In v4, Artifacts are immutable (unless deleted). So you must change each of the uploaded Artifacts to have a different name and filter the downloads by name to achieve the same effect:
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```diff
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jobs:
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upload:
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strategy:
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matrix:
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runs-on: [ubuntu-latest, macos-latest, windows-latest]
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runs-on: ${{ matrix.runs-on }}
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steps:
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- name: Create a File
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run: echo "hello from ${{ matrix.runs-on }}" > file-${{ matrix.runs-on }}.txt
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- name: Upload Artifact
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- uses: actions/upload-artifact@v3
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+ uses: actions/upload-artifact@v4
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with:
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- name: my-artifact
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+ name: my-artifact-${{ matrix.runs-on }}
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path: file-${{ matrix.runs-on }}.txt
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download:
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needs: upload
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runs-on: ubuntu-latest
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steps:
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- name: Download All Artifacts
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- uses: actions/download-artifact@v3
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+ uses: actions/download-artifact@v4
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with:
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path: my-artifact
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+ pattern: my-artifact-*
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+ merge-multiple: true
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- run: ls -R my-artifact
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```
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In `v4`, the new `pattern:` input will filter the downloaded Artifacts to match the name specified. The new `merge-multiple:` input will support downloading multiple Artifacts to the same directory. If the files within the Artifacts have the same name, the last writer wins.
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