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Fix README.md links and some formatting updates #273

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merged 4 commits into from Dec 1, 2021
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Fix README.md links and some formatting updates #273

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14c97ee
Some `README.md` whitespace and tweaks
magnetikonline Dec 1, 2021
23cf287
Fix link and title to GitHub documentation page on `README.md`
magnetikonline Dec 1, 2021
7aeb003
Update link to `actions/toolkit` documentation
magnetikonline Dec 1, 2021
e14a1b3
De-quote some YAML blocks/examples in `README.md`
magnetikonline Dec 1, 2021
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87 changes: 46 additions & 41 deletions README.md
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Expand Up @@ -6,7 +6,7 @@ See also [download-artifact](https://github.com/actions/download-artifact).

# What's new

- Easier upload
- Easier upload
- Specify a wildcard pattern
- Specify an individual file
- Specify a directory (previously you were limited to only this option)
Expand All @@ -25,6 +25,7 @@ Refer [here](https://github.com/actions/upload-artifact/tree/releases/v1) for th
See [action.yml](action.yml)

### Upload an Individual File

```yaml
steps:
- uses: actions/checkout@v2
Expand All @@ -49,6 +50,7 @@ steps:
```

### Upload using a Wildcard Pattern

```yaml
- uses: actions/upload-artifact@v2
with:
Expand All @@ -57,6 +59,7 @@ steps:
```

### Upload using Multiple Paths and Exclusions

```yaml
- uses: actions/upload-artifact@v2
with:
Expand All @@ -69,19 +72,20 @@ steps:

For supported wildcards along with behavior and documentation, see [@actions/glob](https://github.com/actions/toolkit/tree/main/packages/glob) which is used internally to search for files.

If a wildcard pattern is used, the path hierarchy will be preserved after the first wildcard pattern.
If a wildcard pattern is used, the path hierarchy will be preserved after the first wildcard pattern:

```
path/to/*/directory/foo?.txt =>
∟ path/to/some/directory/foo1.txt
∟ path/to/some/directory/foo2.txt
∟ path/to/other/directory/foo1.txt

would be flattened and uploaded as =>
∟ some/directory/foo1.txt
∟ some/directory/foo2.txt
∟ other/directory/foo1.txt
path/to/*/directory/foo?.txt =>
∟ path/to/some/directory/foo1.txt
∟ path/to/some/directory/foo2.txt
∟ path/to/other/directory/foo1.txt

would be flattened and uploaded as =>
∟ some/directory/foo1.txt
∟ some/directory/foo2.txt
∟ other/directory/foo1.txt
```

If multiple paths are provided as input, the least common ancestor of all the search paths will be used as the root directory of the artifact. Exclude paths do not affect the directory structure.

Relative and absolute file paths are both allowed. Relative paths are rooted against the current working directory. Paths that begin with a wildcard character should be quoted to avoid being interpreted as YAML aliases.
Expand All @@ -90,14 +94,14 @@ The [@actions/artifact](https://github.com/actions/toolkit/tree/main/packages/ar

### Customization if no files are found

If a path (or paths), result in no files being found for the artifact, the action will succeed but print out a warning. In certain scenarios it may be desirable to fail the action or suppress the warning. The `if-no-files-found` option allows you to customize the behavior of the action if no files are found.
If a path (or paths), result in no files being found for the artifact, the action will succeed but print out a warning. In certain scenarios it may be desirable to fail the action or suppress the warning. The `if-no-files-found` option allows you to customize the behavior of the action if no files are found:

```yaml
- uses: actions/upload-artifact@v2
with:
name: my-artifact
path: path/to/artifact/
if-no-files-found: error # 'warn' or 'ignore' are also available, defaults to `warn`
if-no-files-found: error # 'warn' or 'ignore' are also available, defaults to `warn`
```

### Conditional Artifact Upload
Expand All @@ -115,6 +119,7 @@ To upload artifacts only when the previous step of a job failed, use [`if: failu
### Uploading without an artifact name

You can upload an artifact without specifying a name

```yaml
- uses: actions/upload-artifact@v2
with:
Expand All @@ -125,7 +130,7 @@ If not provided, `artifact` will be used as the default name which will manifest

### Uploading to the same artifact

With the following example, the available artifact (named `artifact` by default if no name is provided) would contain both `world.txt` (`hello`) and `extra-file.txt` (`howdy`).
With the following example, the available artifact (named `artifact` by default if no name is provided) would contain both `world.txt` (`hello`) and `extra-file.txt` (`howdy`):

```yaml
- run: echo hi > world.txt
Expand All @@ -144,59 +149,59 @@ With the following example, the available artifact (named `artifact` by default
path: world.txt
```

> **_Warning:_** Be careful when uploading to the same artifact via multiple jobs as artifacts may become corrupted
> **_Warning:_** Be careful when uploading to the same artifact via multiple jobs as artifacts may become corrupted

Each artifact behaves as a file share. Uploading to the same artifact multiple times in the same workflow can overwrite and append already uploaded files
Each artifact behaves as a file share. Uploading to the same artifact multiple times in the same workflow can overwrite and append already uploaded files:

```yaml
strategy:
matrix:
node-version: [8.x, 10.x, 12.x, 13.x]
steps:
- name: 'Create a file'
- name: Create a file
run: echo ${{ matrix.node-version }} > my_file.txt
- name: 'Accidently upload to the same artifact via multiple jobs'
uses: 'actions/upload-artifact@v2'
- name: Accidently upload to the same artifact via multiple jobs
uses: actions/upload-artifact@v2
with:
name: my-artifact
path: ${{ github.workspace }}
```

In the above example, four jobs will upload four different files to the same artifact but there will only be one file available when `my-artifact` is downloaded. Each job overwrites what was previously uploaded. To ensure that jobs don't overwrite existing artifacts, use a different name per job.
In the above example, four jobs will upload four different files to the same artifact but there will only be one file available when `my-artifact` is downloaded. Each job overwrites what was previously uploaded. To ensure that jobs don't overwrite existing artifacts, use a different name per job:

```yaml
uses: 'actions/upload-artifact@v2'
uses: actions/upload-artifact@v2
with:
name: my-artifact ${{ matrix.node-version }}
path: ${{ github.workspace }}
```

### Environment Variables and Tilde Expansion

You can use `~` in the path input as a substitute for `$HOME`. Basic tilde expansion is supported.
You can use `~` in the path input as a substitute for `$HOME`. Basic tilde expansion is supported:

```yaml
- run: |
- run: |
mkdir -p ~/new/artifact
echo hello > ~/new/artifact/world.txt
- uses: actions/upload-artifact@v2
with:
name: 'Artifacts-V2'
path: '~/new/**/*'
with:
name: Artifacts-V2
path: ~/new/**/*
```

Environment variables along with context expressions can also be used for input. For documentation see [context and expression syntax](https://help.github.com/en/actions/reference/context-and-expression-syntax-for-github-actions).
Environment variables along with context expressions can also be used for input. For documentation see [context and expression syntax](https://help.github.com/en/actions/reference/context-and-expression-syntax-for-github-actions):

```yaml
env:
name: my-artifact
steps:
- run: |
- run: |
mkdir -p ${{ github.workspace }}/artifact
echo hello > ${{ github.workspace }}/artifact/world.txt
- uses: actions/upload-artifact@v2
with:
name: ${{ env.name }}-name
with:
name: ${{ env.name }}-name
path: ${{ github.workspace }}/artifact/**/*
```

Expand All @@ -205,16 +210,15 @@ Environment variables along with context expressions can also be used for input.
Artifacts are retained for 90 days by default. You can specify a shorter retention period using the `retention-days` input:

```yaml
- name: 'Create a file'
- name: Create a file
run: echo "I won't live long" > my_file.txt

- name: 'Upload Artifact'
- name: Upload Artifact
uses: actions/upload-artifact@v2
with:
name: my-artifact
path: my_file.txt
retention-days: 5

```

The retention period must be between 1 and 90 inclusive. For more information see [artifact and log retention policies](https://docs.github.com/en/free-pro-team@latest/actions/reference/usage-limits-billing-and-administration#artifact-and-log-retention-policy).
Expand All @@ -233,7 +237,7 @@ The size of the artifact is denoted in bytes. The displayed artifact size denote

### Zipped Artifact Downloads

During a workflow run, files are uploaded and downloaded individually using the `upload-artifact` and `download-artifact` actions. However, when a workflow run finishes and an artifact is downloaded from either the UI or through the [download api](https://developer.github.com/v3/actions/artifacts/#download-an-artifact), a zip is dynamically created with all the file contents that were uploaded. There is currently no way to download artifacts after a workflow run finishes in a format other than a zip or to download artifact contents individually. One of the consequences of this limitation is that if a zip is uploaded during a workflow run and then downloaded from the UI, there will be a double zip created.
During a workflow run, files are uploaded and downloaded individually using the `upload-artifact` and `download-artifact` actions. However, when a workflow run finishes and an artifact is downloaded from either the UI or through the [download api](https://developer.github.com/v3/actions/artifacts/#download-an-artifact), a zip is dynamically created with all the file contents that were uploaded. There is currently no way to download artifacts after a workflow run finishes in a format other than a zip or to download artifact contents individually. One of the consequences of this limitation is that if a zip is uploaded during a workflow run and then downloaded from the UI, there will be a double zip created.

### Permission Loss

Expand All @@ -245,18 +249,19 @@ During a workflow run, files are uploaded and downloaded individually using the

### Maintaining file permissions and case sensitive files

If file permissions and case sensitivity are required, you can `tar` all of your files together before artifact upload. Post download, the `tar` file will maintain file permissions and case sensitivity.
If file permissions and case sensitivity are required, you can `tar` all of your files together before artifact upload. Post download, the `tar` file will maintain file permissions and case sensitivity:

```yaml
- name: 'Tar files'
- name: Tar files
run: tar -cvf my_files.tar /path/to/my/directory

- name: 'Upload Artifact'
- name: Upload Artifact
uses: actions/upload-artifact@v2
with:
name: my-artifact
path: my_files.tar
path: my_files.tar
```

### Too many uploads resulting in 429 responses

A very minute subset of users who upload a very very large amount of artifacts in a short period of time may see their uploads throttled or fail because of `Request was blocked due to exceeding usage of resource 'DBCPU' in namespace` or `Unable to copy file to server StatusCode=TooManyRequests`.
Expand All @@ -265,10 +270,10 @@ To reduce the chance of this happening, you can reduce the number of HTTP calls

## Additional Documentation

See [persisting workflow data using artifacts](https://help.github.com/en/actions/configuring-and-managing-workflows/persisting-workflow-data-using-artifacts) for additional examples and tips.
See [Storing workflow data as artifacts](https://docs.github.com/en/actions/advanced-guides/storing-workflow-data-as-artifacts) for additional examples and tips.

See extra documentation for the [@actions/artifact](https://github.com/actions/toolkit/blob/master/packages/artifact/docs/additional-information.md) package that is used internally regarding certain behaviors and limitations.
See extra documentation for the [@actions/artifact](https://github.com/actions/toolkit/blob/main/packages/artifact/docs/additional-information.md) package that is used internally regarding certain behaviors and limitations.

# License

The scripts and documentation in this project are released under the [MIT License](LICENSE)
The scripts and documentation in this project are released under the [MIT License](LICENSE).