workflows: Add GitHub action for automating some release tasks

For each release tag, this action will create a new release on GitHub,
and for each -final tag, this action will build the documentation and
upload it to GitHub.

Reviewed By: hans

Differential Revision: https://reviews.llvm.org/D99780

.github/workflows/release-tasks.yml

@@ -0,0 +1,62 @@
+name: Release Task
+
+on:
+  push:
+    tags:
+      # The regex support here is limited, so just match everything that starts with llvmorg- and filter later.
+      - 'llvmorg-*'
+
+jobs:
+  release-tasks:
+    runs-on: ubuntu-latest
+    steps:
+
+    - name: Install Dependencies
+      run: |
+        sudo apt-get install doxygen python3-sphinx python3-recommonmark ninja-build graphviz texlive-font-utils python3-github
+        pip3 install --user sphinx-markdown-tables
+
+    - name: Checkout LLVM
+      uses: actions/checkout@v1
+      with:
+        fetch-depth: 1
+
+    # This step will only succeed if the tag name is valid, so it safe to
+    # assume a valid tag name in all steps after this one.
+    - name: Create Release
+      run: |
+         ./llvm/utils/release/./github-upload-release.py --token ${{ github.token }} --tag ${{ github.ref_name }} create
+    
+    - name: Get Release Name
+      id: release
+      run: |
+        name=`echo "${{ github.ref_name }}" | sed 's/llvmorg-//g'`
+        echo "::set-output name=name::$name"
+      
+    - name: Build Documentation
+      env:
+        RELEASE: "${{ steps.release.output.name }}"
+      run: |
+        bash llvm/utils/release/build-docs.sh -srcdir llvm -release $RELEASE
+        ./llvm/utils/release/./github-upload-release.py --token ${{ github.token }} --release $RELEASE upload --files *doxygen*.tar.xz
+
+    - name: Clone www-releases
+      if: ${{ !contains(steps.release.outputs.name, 'rc') }}
+      uses: actions/checkout@v1
+      with:
+        repository: ${{ github.repository_owner }}/www-releases
+        ref: main
+        fetch-depth: 0
+        path: www-releases
+
+    - name: Upload Release Notes
+      env:
+        RELEASE: "${{ steps.release.output.name }}"
+      run: |
+        ./github-automation.py --token ${{ github.token }} setup-llvmbot-git
+        mkdir -p ../www-releases/$RELEASE
+        mv ./docs-build/html-export/* ../www-releases/$RELEASE
+        cd ../www-releases
+        git add $RELEASE
+        git commit -a -m "Add $RELEASE documentation"
+        git push https://${{ secrets.WWW_RELEASES_TOKEN }}@github.com/${{ github.repository_owner }}/www-releases main:main

llvm/utils/release/github-upload-release.py

@@ -30,6 +30,13 @@
 
 import argparse
 import github
+import re
+
+def tag_to_release(tag):
+    m = re.match("^llvmorg-([0-9]+\.[0-9]+\.[0-9]+)(-rc[0-9]+)?$", tag)
+    if not m:
+        raise Exception("Invalid tag: {}".format(tag))
+    return "".join(m.groups(""))
 
 def create_release(repo, release, tag = None, name = None, message = None):
     if not tag:
@@ -52,7 +59,6 @@ def upload_files(repo, release, files):
         print('Uploading {}'.format(f))
         release.upload_asset(f)
         print("Done")
-
 
 
 parser = argparse.ArgumentParser()
@@ -61,6 +67,7 @@ def upload_files(repo, release, files):
 # All args
 parser.add_argument('--token', type=str)
 parser.add_argument('--release', type=str)
+parser.add_argument('--tag', type=str)
 
 # Upload args
 parser.add_argument('--files', nargs='+', type=str)
@@ -71,7 +78,20 @@ def upload_files(repo, release, files):
 github = github.Github(args.token)
 llvm_repo = github.get_organization('llvm').get_repo('llvm-project')
 
+if args.tag and args.release:
+    print("--tag and --release are not allowed together")
+    sys.exit(1)
+
+if not args.tag and not args.release:
+    print("Must specify either --tag or --release")
+    sys.exit(1)
+
+if args.release:
+    release = args.release
+else:
+    release = tag_to_release(args.tag)
+
 if args.command == 'create':
-    create_release(llvm_repo, args.release)
+    create_release(llvm_repo, release, tag = args.tag)
 if args.command == 'upload':
-    upload_files(llvm_repo, args.release, args.files)
+    upload_files(llvm_repo, release, args.files)