Updates on files

Author: Alexander Rogalskiy

.github/actions/skip/action.yml

@@ -0,0 +1,74 @@
+# - name: Set Skip Env Var
+#   uses: ./.github/actions/skip
+# - name: Cache local Maven repository
+#   if: env.SKIP_CI != 'true'
+
+name: "Set Skip Env Var"
+description: "Action to set the SKIP_CI environment variable indicating that we should skip CI jobs"
+inputs:
+  paths:
+    description: >-
+      Set the SKIP_CI environment variable when and only when all the changed files located in one of the path,
+      the paths is shell-style pattern.
+    required: false
+    default: >-
+      "*.md"
+      "*.txt"
+      "skywalking-ui"
+      ".asf.yaml"
+      ".dlc.yaml"
+      ".licenserc.yaml"
+      "docs/menu.yml"
+      ".github/actions/skip/action.yml"
+      ".github/workflows/codeql.yaml"
+      "dist-material/release-docs"
+      "test/plugin/*"
+      "*/component-libraries.yml"
+
+runs:
+  using: "composite"
+  steps:
+    - name: Check Changed Files And Set Env Var
+      shell: bash
+      run: |
+        if [[ "${{ github.event_name }}" != "pull_request" ]]; then
+          exit 0
+        fi
+
+        BASE_SHA=$(jq -r '.pull_request.base.sha' $GITHUB_EVENT_PATH)
+        echo "Base sha is $BASE_SHA, head sha is $GITHUB_SHA"
+
+        git fetch --no-tags --progress --recurse-submodules --depth=1 origin ${BASE_SHA}:origin/${BASE_SHA}
+        BASE_SHA=origin/${BASE_SHA}
+        echo "Base sha is $BASE_SHA, head sha is $GITHUB_SHA"
+
+        if ! files=$(git --no-pager diff --name-only ${GITHUB_SHA} ${BASE_SHA}); then
+          exit 1
+        fi
+
+        echo "Ignore pattern:"
+        for pattern in $(echo '${{ inputs.paths }}'); do
+          echo $pattern
+        done
+
+        echo "Changed files:"
+        for file in ${files}; do
+          echo $file
+        done
+
+        echo "SKIP_CI=true" >> $GITHUB_ENV
+        for file in ${files}; do
+          matched=0
+          for pattern in $(echo '${{ inputs.paths }}'); do
+            pattern=$(echo "$pattern" | sed 's/"//g')
+            if eval "[[ '$file' == $pattern ]]"; then
+              matched=1
+              break
+            fi
+          done
+          if [[ "$matched" == "0" ]]; then
+            echo "$file doesn't match pattern $(echo '${{ inputs.paths }}'), stop checking"
+            echo "SKIP_CI=false" >> $GITHUB_ENV
+            break
+          fi
+        done

.github/workflows/dead-link-checker.yaml

@@ -0,0 +1,20 @@
+name: Dead Link Checker
+
+on:
+  pull_request:
+
+concurrency:
+  group: dlc-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  CheckDeadLinks:
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    steps:
+      - uses: actions/checkout@v2
+      - run: sudo npm install -g markdown-link-check
+      - run: |
+          for file in $(find . -name "*.md"); do
+            markdown-link-check -c .dlc.json -q "$file"
+          done