HDDS-4889. Add simple CI check for docs

.github/workflows/post-commit.yml

@@ -77,6 +77,7 @@ jobs:
           - author
           - bats
           - checkstyle
+          - docs
           - findbugs
           - rat
           - unit
@@ -93,7 +94,7 @@ jobs:
             maven-repo-${{ hashFiles('**/pom.xml') }}-8
             maven-repo-${{ hashFiles('**/pom.xml') }}
             maven-repo-
-        if: ${{ !contains('author,bats', matrix.check) }}
+        if: ${{ !contains('author,bats,docs', matrix.check) }}
       - name: Execute tests
         run: hadoop-ozone/dev-support/checks/${{ matrix.check }}.sh
       - name: Summary of failures

hadoop-ozone/dev-support/checks/_lib.sh

@@ -87,6 +87,34 @@ _install_flekszible() {
   chmod +x bin/flekszible
 }
 
+install_hugo() {
+  _install_tool hugo bin
+}
+
+_install_hugo() {
+  : ${HUGO_VERSION:=0.81.0}
+
+  local os=$(uname -s)
+  local arch=$(uname -m)
+
+  mkdir bin
+
+  case "${os}" in
+    Darwin)
+      os=macOS
+      ;;
+  esac
+
+  case "${arch}" in
+    x86_64)
+      arch=64bit
+      ;;
+  esac
+
+  curl -LSs "https://github.com/gohugoio/hugo/releases/download/v${HUGO_VERSION}/hugo_${HUGO_VERSION}_${os}-${arch}.tar.gz" | tar -xz -f - -C bin hugo
+  chmod +x bin/hugo
+}
+
 install_virtualenv() {
   _install_tool virtualenv
 }

hadoop-ozone/dev-support/checks/docs.sh

@@ -0,0 +1,40 @@
+#!/usr/bin/env bash
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -u -o pipefail
+
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+cd "${DIR}/../../.." || exit 1
+
+source "${DIR}/_lib.sh"
+install_hugo
+
+REPORT_DIR=${OUTPUT_DIR:-"${DIR}/../../../target/docs"}
+mkdir -p "${REPORT_DIR}"
+REPORT_FILE="${REPORT_DIR}/summary.txt"
+
+hadoop-hdds/docs/dev-support/bin/generate-site.sh | tee "${REPORT_DIR}/output.log"
+rc=$?
+
+grep -o 'ERROR.*' "${REPORT_DIR}/output.log" > "${REPORT_FILE}"
+
+wc -l "${REPORT_FILE}" | awk '{ print $1 }' > "${REPORT_DIR}/failures"
+
+if [[ -s "${REPORT_FILE}" ]]; then
+   exit 1
+fi
+
+exit ${rc}