[CI] Move check_labels to github actions (#2415)

* move lib.sh to common dir

* make check-labels a github action

* check out the repo

* fix secrets

* add labelled PR type

* remove check-labels job from gitlab

* trigger on unlabelling also

polkadot/.github/workflows/check-labels.yml

@@ -0,0 +1,16 @@
+name: Check labels
+
+on:
+  pull_request:
+    types: [labeled, opened, synchronize, unlabeled]
+
+jobs:
+  check-labels:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Check labels
+        run: bash ${{ github.workspace }}/scripts/github/check_labels.sh
+        env:
+          GITHUB_PR: ${{ github.event.pull_request.number }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

polkadot/.gitlab-ci.yml

@@ -328,13 +328,3 @@ deploy-polkasync-kusama:
     POLKADOT_CI_COMMIT_REF:        "${CI_COMMIT_REF}"
   allow_failure:                   true
   trigger:                         "parity/infrastructure/parity-testnet"
-
-#### stage:                        .post
-
-check-labels:
-  stage:                           .post
-  image:                           paritytech/tools:latest
-  <<:                              *rules-pr-only
-  <<:                              *kubernetes-env
-  script:
-    - ./scripts/gitlab/check_labels.sh

polkadot/scripts/common/lib.sh

@@ -51,11 +51,17 @@ has_label(){
   repo="$1"
   pr_id="$2"
   label="$3"
+
+  # These will exist if the function is called in Gitlab.
+  # If the function's called in Github, we should have GITHUB_ACCESS_TOKEN set
+  # already.
   if [ -n "$GITHUB_RELEASE_TOKEN" ]; then
-    out=$(curl -H "Authorization: token $GITHUB_RELEASE_TOKEN" -s "$api_base/$repo/pulls/$pr_id")
-  else
-    out=$(curl -H "Authorization: token $GITHUB_PR_TOKEN" -s "$api_base/$repo/pulls/$pr_id")
+    GITHUB_TOKEN="$GITHUB_RELEASE_TOKEN"
+  elif [ -n "$GITHUB_PR_TOKEN" ]; then
+    GITHUB_TOKEN="$GITHUB_PR_TOKEN"
   fi
+
+  out=$(curl -H "Authorization: token $GITHUB_TOKEN" -s "$api_base/$repo/pulls/$pr_id")
   [ -n "$(echo "$out" | tr -d '\r\n' | jq ".labels | .[] | select(.name==\"$label\")")" ]
 }
 

polkadot/scripts/github/check_labels.sh

@@ -1,13 +1,14 @@
 #!/usr/bin/env bash
 
-#shellcheck source=lib.sh
-source "$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )/lib.sh"
+#shellcheck source=../common/lib.sh
+source "$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )/../common/lib.sh"
 
-repo='paritytech/polkadot'
+repo="$GITHUB_REPOSITORY"
+pr="$GITHUB_PR"
 
 ensure_labels() {
   for label in "$@"; do
-    if has_label "$repo" "$CI_COMMIT_BRANCH" "$label"; then
+    if has_label "$repo" "$pr" "$label"; then
       return 0
     fi
   done

polkadot/scripts/gitlab/check_runtime.sh

@@ -16,8 +16,8 @@
 set -e # fail on any error
 
 #Include the common functions library
-#shellcheck source=lib.sh
-. "$(dirname "${0}")/lib.sh"
+#shellcheck source=../common/lib.sh
+. "$(dirname "${0}")/../common/lib.sh"
 
 SUBSTRATE_REPO="https://github.com/paritytech/substrate"
 SUBSTRATE_REPO_CARGO="git\+${SUBSTRATE_REPO}"

polkadot/scripts/gitlab/check_runtime_benchmarks.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-#shellcheck source=lib.sh
-source "$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )/lib.sh"
+#shellcheck source=../common/lib.sh
+source "$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )/../common/lib.sh"
 
 time cargo check --features runtime-benchmarks

polkadot/scripts/gitlab/check_web_wasm.sh

@@ -2,7 +2,7 @@
 
 set -e
 
-#shellcheck source=lib.sh
-source "$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )/lib.sh"
+#shellcheck source=../common/lib.sh
+source "$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )/../common/lib.sh"
 
 time cargo build --locked --target=wasm32-unknown-unknown --manifest-path cli/Cargo.toml --no-default-features --features browser

polkadot/scripts/gitlab/test_deterministic_wasm.sh

@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 
-#shellcheck source=lib.sh
-source "$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )/lib.sh"
+#shellcheck source=../common/lib.sh
+source "$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )/../common/lib.sh"
 
 # build runtime
 WASM_BUILD_NO_COLOR=1 cargo build --verbose --release -p kusama-runtime -p polkadot-runtime -p westend-runtime

polkadot/scripts/gitlab/test_linux_stable.sh

@@ -1,8 +1,8 @@
 #!/usr/bin/env bash
 set -e
 
-#shellcheck source=lib.sh
-source "$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )/lib.sh"
+#shellcheck source=../common/lib.sh
+source "$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )/../common/lib.sh"
 
 time cargo test --all --release --verbose --locked --features=runtime-benchmarks --features=real-overseer