Include list of merged PRs in dependency bumps for jupyterhub repos

.github/workflows/watch-dependencies.yaml

@@ -76,6 +76,18 @@ jobs:
         if: steps.local.outputs.tag != steps.latest.outputs.tag
         run: git --no-pager diff --color=always
 
+      - name: PR summary
+        id: prsummary
+        if: steps.local.outputs.tag != steps.latest.outputs.tag
+        # Needs to be a single line string
+        # https://trstringer.com/github-actions-multiline-strings/#option-1---string-substitution
+        run: |
+          pip install PyGithub
+          PR_LIST=$(./scripts/get-prs.py ${{matrix.repository}} ${{steps.local.outputs.tag}} ${{steps.latest.outputs.tag}} --github-action-escape)
+          echo "::set-output name=prs::$PR_LIST"
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
       # ref: https://github.com/peter-evans/create-pull-request
       - name: Create a PR
         uses: peter-evans/[email protected]
@@ -93,6 +105,9 @@ jobs:
           body: |
             Updates mybinder to depend on the `${{ matrix.registry }}/${{ matrix.repository }}` image version `${{ steps.latest.outputs.tag }}` from version `${{ steps.local.outputs.tag }}`.
 
+            ## Merged PRs:
+            ${{ steps.prsummary.outputs.prs }}
+
             ## Related
 
             - Source code: ${{ matrix.source_url }}
@@ -119,30 +134,35 @@ jobs:
             chart_dep_app_changelog_url: "https://github.com/jupyterhub/binderhub/blob/master/CHANGES.md"
             chart_dep_source_url: "https://github.com/jupyterhub/binderhub/tree/master/helm-chart"
             chart_dep_devel_flag: "--devel"
+            github_repo: jupyterhub/binderhub
 
           - chart_dep_name: ingress-nginx
             chart_dep_chart_changelog_url: "https://github.com/kubernetes/ingress-nginx/tree/main/charts/ingress-nginx#upgrading-chart"
             chart_dep_app_changelog_url: "https://github.com/kubernetes/ingress-nginx/blob/master/Changelog.md"
             chart_dep_source_url: "https://github.com/kubernetes/ingress-nginx/tree/master/charts/ingress-nginx"
             chart_dep_devel_flag: ""
+            github_repo: ""
 
           - chart_dep_name: prometheus
             chart_dep_chart_changelog_url: "https://github.com/prometheus-community/helm-charts/tree/main/charts/prometheus#upgrading-chart"
             chart_dep_app_changelog_url: "https://github.com/prometheus/prometheus/blob/master/CHANGELOG.md"
             chart_dep_source_url: https://github.com/prometheus-community/helm-charts/tree/main/charts/prometheus
             chart_dep_devel_flag: ""
+            github_repo: ""
 
           - chart_dep_name: grafana
             chart_dep_chart_changelog_url: "https://github.com/grafana/helm-charts/tree/main/charts/grafana#upgrading-an-existing-release-to-a-new-major-version"
             chart_dep_app_changelog_url: "https://github.com/grafana/grafana/blob/master/CHANGELOG.md"
             chart_dep_source_url: "https://github.com/grafana/helm-charts/tree/main/charts/grafana"
             chart_dep_devel_flag: ""
+            github_repo: ""
 
           - chart_dep_name: cryptnono
             chart_dep_chart_changelog_url: ""
             chart_dep_app_changelog_url: ""
             chart_dep_source_url: "https://github.com/yuvipanda/cryptnono/"
             chart_dep_devel_flag: "--devel"
+            github_repo: ""
 
     steps:
       - uses: actions/checkout@v3
@@ -185,6 +205,18 @@ jobs:
       - name: git diff
         run: git --no-pager diff --color=always
 
+      - name: PR summary
+        id: prsummary
+        if: matrix.github_repo && (steps.local.outputs.version != steps.latest.outputs.version)
+        # Needs to be a single line string
+        # https://trstringer.com/github-actions-multiline-strings/#option-1---string-substitution
+        run: |
+          pip install PyGithub
+          PR_LIST=$(./scripts/get-prs.py ${{matrix.github_repo}} ${{steps.local.outputs.version}} ${{steps.latest.outputs.version}} --github-action-escape)
+          echo "::set-output name=prs::$PR_LIST"
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
       # ref: https://github.com/peter-evans/create-pull-request
       - name: Create a PR
         uses: peter-evans/[email protected]
@@ -207,6 +239,9 @@ jobs:
             Chart.yaml's version | `${{ steps.local.outputs.version }}` | `${{ steps.latest.outputs.version }}`
             Chart.yaml's appVersion | `${{ steps.local.outputs.appVersion }}` | `${{ steps.latest.outputs.appVersion }}`
 
+            ## Merged PRs:
+            ${{ steps.prsummary.outputs.prs }}
+
             ## Related
 
             - Chart source code: ${{ matrix.chart_dep_source_url }}

scripts/get-prs.py

@@ -0,0 +1,60 @@
+#!/usr/bin/env python
+import os
+import re
+from argparse import ArgumentParser
+
+import github
+
+
+def extract_gitref(s):
+    """
+    Extract git ref from a container registry tag or Helm chart version
+
+    Examples:
+    - 2022.02.0 -> 2022.02.0
+    - 2022.02.0-90.g0345a86 -> 0345a86
+    - 0.2.0 -> 0.2.0
+    - 0.2.0-n1011.hb49edf6 -> b49edf6
+    - 0.2.0-0.dev.git.2752.h3450e52 -> 3450e52
+    """
+    m = re.match(r"[\d\.]+-[\w\.]+[gh]([0-9a-f]+)", s)
+    if m:
+        return m.group(1)
+    return s
+
+
+token = os.getenv("GITHUB_TOKEN")
+
+parser = ArgumentParser(description="Summarise PRs from a repo")
+parser.add_argument("repo", help="The repository in format user/repo")
+parser.add_argument("start", help="commit or image/chart version from which to start")
+parser.add_argument("end", help="commit or image/chart version to which to end")
+parser.add_argument(
+    "--github-action-escape",
+    action="store_true",
+    help="Escape output for GitHub Action",
+)
+
+args = parser.parse_args()
+
+gh = github.Github(token)
+r = gh.get_repo(args.repo)
+
+start = extract_gitref(args.start)
+end = extract_gitref(args.end)
+
+prs = set()
+git_compare = r.compare(start, end)
+for c in git_compare.commits:
+    s = gh.search_issues("", type="pr", repo=args.repo, sha=c.sha)
+    prs.update(s)
+
+
+pr_summaries = [
+    f"- [#{pr.number}]({pr.html_url}) {pr.title}"
+    for pr in sorted(prs, key=lambda pr: pr.number)
+]
+if args.github_action_escape:
+    print("%0A".join(pr_summaries))
+else:
+    print("\n".join(pr_summaries))