我的工作流程需要循环执行这些步骤，这非常适合策略/矩阵。
唯一的问题是策略/矩阵需要由常量设置。
是否可以将策略矩阵与脚本输出一起使用？
name: tests
on: [push]
jobs:
test:
runs-on: ${{ ubuntu-latest }}
strategy:
fail-fast: false
matrix:
versions: $(./script.py)
steps:
- uses: actions/checkout@v2
.......
答案 0 :(得分：11)
您可以在一个作业中以JSON格式生成矩阵并将其设置为第二个作业。
GitHub在4月添加了此功能：https://github.blog/changelog/2020-04-15-github-actions-new-workflow-features/
name: build
on: push
jobs:
job1:
runs-on: ubuntu-latest
outputs:
matrix: ${{ steps.set-matrix.outputs.matrix }}
steps:
- id: set-matrix
run: echo "::set-output name=matrix::{\"include\":[{\"project\":\"foo\",\"config\":\"Debug\"},{\"project\":\"bar\",\"config\":\"Release\"}]}"
job2:
needs: job1
runs-on: ubuntu-latest
strategy:
matrix: ${{fromJson(needs.job1.outputs.matrix)}}
steps:
- run: echo ${{ matrix.project }}
- run: echo ${{ matrix.config }}
第一个作业将输出变量matrix设置为包含两个配置的JSON：
{
"include": [
{
"project": "foo",
"config": "Debug"
},
{
"project": "bar",
"config": "Release"
}
]
}
.yml中的等效值：
job2:
strategy:
matrix:
include:
- project: foo
config: Debug
- project: bar
config: Release
不要忘记对引号\"进行转义并在一行中显示JSON。
它detects changed files并为更改的目录运行构建作业。如果目录名称以OS名称开头，则使用该名称作为运行文件。
name: Build
on: [push, pull_request]
jobs:
generate-matrix:
name: Generate matrix for build
runs-on: ubuntu-latest
outputs:
matrix: ${{ steps.set-matrix.outputs.matrix }}
steps:
- uses: actions/checkout@v2
- name: Check changed files
id: diff
run: |
# See https://github.community/t/check-pushed-file-changes-with-git-diff-tree-in-github-actions/17220/10
if [ $GITHUB_BASE_REF ]; then
# Pull Request
git fetch origin $GITHUB_BASE_REF --depth=1
export DIFF=$( git diff --name-only origin/$GITHUB_BASE_REF $GITHUB_SHA )
echo "Diff between origin/$GITHUB_BASE_REF and $GITHUB_SHA"
else
# Push
git fetch origin ${{ github.event.before }} --depth=1
export DIFF=$( git diff --name-only ${{ github.event.before }} $GITHUB_SHA )
echo "Diff between ${{ github.event.before }} and $GITHUB_SHA"
fi
echo "$DIFF"
# Escape newlines (replace \n with %0A)
echo "::set-output name=diff::$( echo "$DIFF" | sed ':a;N;$!ba;s/\n/%0A/g' )"
- name: Set matrix for build
id: set-matrix
run: |
# See https://stackoverflow.com/a/62953566/11948346
DIFF="${{ steps.diff.outputs.diff }}"
JSON="{\"include\":["
# Loop by lines
while read path; do
# Set $directory to substring before /
directory="$( echo $path | cut -d'/' -f1 -s )"
if [ -z "$directory" ]; then
continue # Exclude root directory
elif [ "$directory" == docs ]; then
continue # Exclude docs directory
elif [ "$path" == *.rst ]; then
continue # Exclude *.rst files
fi
# Set $os. "ubuntu-latest" by default. if directory starts with windows, then "windows-latest"
os="ubuntu-latest"
if [ "$directory" == windows* ]; then
os="windows-latest"
fi
# Add build to the matrix only if it is not already included
JSONline="{\"directory\": \"$directory\", \"os\": \"$os\"},"
if [[ "$JSON" != *"$JSONline"* ]]; then
JSON="$JSON$JSONline"
fi
done <<< "$DIFF"
# Remove last "," and add closing brackets
if [[ $JSON == *, ]]; then
JSON="${JSON%?}"
fi
JSON="$JSON]}"
echo $JSON
# Set output
echo "::set-output name=matrix::$( echo "$JSON" )"
build:
name: Build "${{ matrix.directory }}" on ${{ matrix.os }}
needs: generate-matrix
strategy:
matrix: ${{fromJson(needs.generate-matrix.outputs.matrix)}}
runs-on: ${{ matrix.os }}
steps:
- uses: actions/checkout@v2
- name: Build
run: |
cd ${{ matrix.directory }}
echo "${{ matrix.directory }} ${{ matrix.os }}"
答案 1 :(得分：0)
添加一个新示例，这是一个非常有用的答案。谢谢@ArtemSBulgakov！
此人将Github Actions的Github strategy.matrix与fromJson一起使用，以仅收集具有更改的Pull Request中的目录，并使用https://github.com/dflook/terraform-github-actions进行Terraform的语法检查和格式检查>
---
name: Check Syntax
on: [pull_request]
jobs:
generate-matrix:
name: Generate matrix for build
runs-on: ubuntu-latest
outputs:
matrix: ${{ steps.set-matrix.outputs.matrix }}
steps:
- name: Checkout
uses: actions/checkout@v2
with:
fetch-depth: 0
- name: Check changed files
id: diff
run: |
# See https://github.community/t/check-pushed-file-changes-with-git-diff-tree-in-github-actions/17220/10
export DIFF=$( git diff --dirstat=files,0,cumulative ${{ github.event.pull_request.base.sha }} | awk -F ' ' '{print $2}' )
echo "$DIFF"
# Escape newlines (replace \n with %0A)
echo "::set-output name=diff::$( echo "$DIFF" | sed ':a;N;$!ba;s/\n/%0A/g' )"
- name: Set matrix for build
id: set-matrix
run: |
# See https://stackoverflow.com/a/62953566/11948346
DIFF="${{ steps.diff.outputs.diff }}"
JSON="{\"tfpaths\":["
# Loop by lines
while read path; do
# Add item to the matrix only if it is not already included
JSONline="\"$path\","
if [[ "$JSON" != *"$JSONline"* ]]; then
JSON="$JSON$JSONline"
fi
done <<< "$DIFF"
# Remove last "," and add closing brackets
if [[ $JSON == *, ]]; then
JSON="${JSON%?}"
fi
JSON="$JSON]}"
echo $JSON
# Set output
echo "::set-output name=matrix::$( echo "$JSON" )"
validate:
name: Check Terraform syntax on "${{ matrix.tfpaths }}"
needs: generate-matrix
strategy:
matrix: ${{fromJson(needs.generate-matrix.outputs.matrix)}}
runs-on: ubuntu-latest
steps:
- name: Checkout
uses: actions/checkout@v2
- name: terraform validate
uses: dflook/terraform-validate@v1
with:
path: ${{ matrix.tfpaths }}
check-format:
name: Check Terraform format on "${{ matrix.tfpaths }}"
needs: generate-matrix
strategy:
matrix: ${{fromJson(needs.generate-matrix.outputs.matrix)}}
runs-on: ubuntu-latest
steps:
- name: Checkout
uses: actions/checkout@v2
- name: terraform fmt
uses: dflook/terraform-fmt-check@v1
with:
path: ${{ matrix.tfpaths }}