Styleguide java (#1899)

* modify .gitignore

* add ok idea files

* add google java format idea files

* remove old test reporter

* add google java format CI check

* add google java format readme

* remove checkstyle

* google java format

* fix runner spec

* reformat

* add note about linux

* add fix script

.github/scripts/check-google-java-format.sh

@@ -0,0 +1,45 @@
+#!/bin/bash
+set -u
+
+script_name=""
+
+case "$(uname -sr)" in
+
+   Darwin*)
+     script_name="google-java-format_darwin-arm64"
+     ;;
+
+   Linux*)
+     script_name="google-java-format_linux-x86-64"
+     ;;
+   *)
+     echo 'Unsupported OS'
+     exit 1
+     ;;
+esac
+
+JAVA_FILES=$(find . -name "*.java" -type f)
+
+invalid_files=0
+
+echo "Following files are formatted incorrectly:";
+# TODO: remove '--skip-reflowing-long-strings' once https://github.com/google/google-java-format/issues/566 is fixed
+for FILE in $JAVA_FILES; do
+  if [[ "$*" == *--fix* ]]; then
+    ./$script_name --skip-reflowing-long-strings --replace "$FILE" > /dev/null
+  else
+    ./$script_name --set-exit-if-changed --skip-reflowing-long-strings "$FILE" > /dev/null
+  fi
+  if [ $? -ne 0 ]; then
+    echo "$FILE"
+    ((invalid_files++))
+  fi
+done
+
+if [ "$invalid_files" -ne 0 ]; then
+  echo "Found $invalid_files incorrectly formatted files (listed above), run google-java-format to fix them.";
+  exit 1
+else
+   echo "All files are formatted correctly."
+fi
+

.github/workflows/google-java-format.yml

@@ -0,0 +1,26 @@
+name: Google java format
+
+on:
+  workflow_dispatch:
+  pull_request:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          ref: ${{ github.head_ref }}
+
+      - name: Download and run google java format
+        run: |
+          ls -la
+          curl -sSLO "https://github.com/google/google-java-format/releases/download/v$VERSION/google-java-format_linux-x86-64"
+          chmod a+x google-java-format_linux-x86-64
+          ./.github/scripts/check-google-java-format.sh
+        shell: bash
+        env:
+            VERSION: 1.23.0
+

.gitignore

@@ -1,7 +1,6 @@
 build
 .gradle
 classes
-.idea
 *.iml
 *.ipr
 *.iws
@@ -39,3 +38,38 @@ scripts/lib/
 scripts/pip-selfcheck.json
 
 .DS_Store
+
+# User-specific stuff
+.idea/**/workspace.xml
+.idea/**/tasks.xml
+.idea/**/usage.statistics.xml
+.idea/**/dictionaries
+.idea/**/shelf
+
+# Generated files
+.idea/**/contentModel.xml
+
+# Sensitive or high-churn files
+.idea/**/dataSources/
+.idea/**/dataSources.ids
+.idea/**/dataSources.local.xml
+.idea/**/sqlDataSources.xml
+.idea/**/dynamic.xml
+.idea/**/uiDesigner.xml
+.idea/**/dbnavigator.xml
+
+
+# Gradle and Maven with auto-import
+# When using Gradle or Maven with auto-import, you should exclude module files,
+# since they will be recreated, and may cause churn.  Uncomment if using
+# auto-import.
+.idea/artifacts
+.idea/compiler.xml
+.idea/jarRepositories.xml
+.idea/modules.xml
+.idea/*.iml
+.idea/modules
+
+# Gradle
+.idea/**/gradle.xml
+.idea/**/libraries