From 79fb722657e2a2887a8cb77401712ebd3a89054b Mon Sep 17 00:00:00 2001
From: Franck Nijhof <git@frenck.dev>
Date: Sun, 5 Jul 2020 02:19:00 +0200
Subject: [PATCH] GitHub Actions: Add flake8 problem matcher (#37465)

---
 .github/workflows/ci.yaml              |  3 +++
 .github/workflows/matchers/flake8.json | 30 ++++++++++++++++++++++++++
 2 files changed, 33 insertions(+)
 create mode 100644 .github/workflows/matchers/flake8.json

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 390b9874b38..e39351bd939 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -308,6 +308,9 @@ jobs:
         run: |
           echo "Failed to restore Python virtual environment from cache"
           exit 1
+      - name: Register flake8 problem matcher
+        run: |
+          echo "::add-matcher::.github/workflows/matchers/flake8.json"
       - name: Run flake8
         run: |
           . venv/bin/activate
diff --git a/.github/workflows/matchers/flake8.json b/.github/workflows/matchers/flake8.json
new file mode 100644
index 00000000000..83163e72815
--- /dev/null
+++ b/.github/workflows/matchers/flake8.json
@@ -0,0 +1,30 @@
+{
+  "problemMatcher": [
+    {
+      "owner": "flake8-error",
+      "severity": "error",
+      "pattern": [
+        {
+          "regexp": "^(.*):(\\d+):(\\d+):\\s(E\\d{3}\\s.*)$",
+          "file": 1,
+          "line": 2,
+          "column": 3,
+          "message": 4
+        }
+      ]
+    },
+    {
+      "owner": "flake8-warning",
+      "severity": "warning",
+      "pattern": [
+        {
+          "regexp": "^(.*):(\\d+):(\\d+):\\s([CDFNW]\\d{3}\\s.*)$",
+          "file": 1,
+          "line": 2,
+          "column": 3,
+          "message": 4
+        }
+      ]
+    }
+  ]
+}