CI: basic release workflow

.github/workflows/release.yml

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+name: Make release
+
+on:
+  workflow_dispatch:
+    inputs:
+      sha:
+        description: "Commit SHA to create release from"
+        required: true
+      tag:
+        description: "Tag of the release"
+        required: true
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v2
+        with:
+          ref: github.event.inputs.sha
+
+      - name: Install stable toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+
+      - name: Build
+        uses: actions-rs/cargo@v1
+        with:
+          command: build
+          args: --release

ci/make_release.py

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+import os
+
+import click
+import git
+import requests
+
+ROOT_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+REPOSITORY = git.Repo(ROOT_DIR)
+
+
+def send_github_event(workflow_name: str, token: str, inputs=()):
+    if inputs is None:
+        inputs = {}
+    payload = {"ref": "ci", "inputs": inputs}
+    headers = {"Authorization": f"token {token}",
+               "Accept": "application/vnd.github.v3+json"}
+    response = requests.post(
+        f"https://api.github.com/repos/it4innovations/rsds/actions/workflows/{workflow_name}/dispatches",
+        json=payload,
+        headers=headers)
+    response.raise_for_status()
+
+
+token_option = click.option("-t", "--token", required=True, envvar="IR_GITHUB_TOKEN", show_envvar=True,
+                            help="GitHub token. Note, it should have `repo` scope.")
+
+
+@click.command(help="Create a new release")
+@click.argument("branch")
+@click.argument("tag")
+@token_option
+def make_release(branch: str, tag: str, token: str):
+    """
+    Create a release using GitHub.
+
+    BRANCH is either a branch, commit or SHA from which to create the release.
+    TAG is the name of the release.
+    TOKEN is a Github token.
+    """
+    sha = REPOSITORY.rev_parse(branch).hexsha
+    send_github_event("release.yml", token, {
+        "sha": sha,
+        "tag": tag
+    })
+
+
+if __name__ == '__main__':
+    make_release()

ci/requirements.txt

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+click
+requests
+gitpython