chore: setup checkstyle linter for Java (#346)

Author: alexeagle

.aspect/cli/config.yaml

@@ -13,6 +13,7 @@ plugins:
 lint:
   aspects:
     - //tools/lint:linters.bzl%buf
+    - //tools/lint:linters.bzl%checkstyle
     - //tools/lint:linters.bzl%clang_tidy
     - //tools/lint:linters.bzl%eslint
     - //tools/lint:linters.bzl%shellcheck

BUILD.bazel

@@ -17,6 +17,7 @@ exports_files(
         ".ruff.toml",
         ".shellcheckrc",
         "buf.yaml",
+        "checkstyle.xml",
         "pmd.xml",
         "pyproject.toml",
     ],

MODULE.bazel

@@ -8,7 +8,7 @@
 bazel_dep(name = "apple_support", version = "1.11.1")
 bazel_dep(name = "aspect_bazel_lib", version = "2.8.0")
 bazel_dep(name = "aspect_rules_js", version = "2.0.0")
-bazel_dep(name = "aspect_rules_lint", version = "1.0.0-rc9")
+bazel_dep(name = "aspect_rules_lint", version = "1.0.0-rc10")
 bazel_dep(name = "aspect_rules_swc", version = "2.0.0")
 bazel_dep(name = "aspect_rules_ts", version = "3.0.0")
 bazel_dep(name = "bazel_skylib", version = "1.4.2")
@@ -48,6 +48,12 @@ http_archive(
     url = "https://github.com/pmd/pmd/releases/download/pmd_releases/6.55.0/pmd-bin-6.55.0.zip",
 )
 
+http_jar(
+    name = "com_puppycrawl_tools_checkstyle",
+    sha256 = "51c34d738520c1389d71998a9ab0e6dabe0d7cf262149f3e01a7294496062e42",
+    url = "https://github.com/checkstyle/checkstyle/releases/download/checkstyle-10.17.0/checkstyle-10.17.0-all.jar",
+)
+
 http_jar(
     name = "google-java-format",
     sha256 = "33068bbbdce1099982ec1171f5e202898eb35f2919cf486141e439fc6e3a4203",

MODULE.bazel.lock

@@ -0,0 +1,15 @@
+<?xml version="1.0"?>
+<!DOCTYPE module PUBLIC
+          "-//Checkstyle//DTD Checkstyle Configuration 1.3//EN"
+          "https://checkstyle.org/dtds/configuration_1_3.dtd">
+<module name="Checker">
+
+  <module name="TreeWalker">
+    <module name="UnusedImports"/>
+  </module>
+
+  <module name="LineLength">
+    <property name="max" value="90"/>
+  </module>
+
+</module>

checkstyle.xml

@@ -38,3 +38,9 @@ native_binary(
     ),
     out = "clang_tidy",
 )
+
+java_binary(
+    name = "checkstyle",
+    main_class = "com.puppycrawl.tools.checkstyle.Main",
+    runtime_deps = ["@com_puppycrawl_tools_checkstyle//jar"],
+)

tools/lint/BUILD.bazel

@@ -1,6 +1,7 @@
 "Define linter aspects"
 
 load("@aspect_rules_lint//lint:buf.bzl", "lint_buf_aspect")
+load("@aspect_rules_lint//lint:checkstyle.bzl", "lint_checkstyle_aspect")
 load("@aspect_rules_lint//lint:clang_tidy.bzl", "lint_clang_tidy_aspect")
 load("@aspect_rules_lint//lint:eslint.bzl", "lint_eslint_aspect")
 load("@aspect_rules_lint//lint:pmd.bzl", "lint_pmd_aspect")
@@ -46,3 +47,8 @@ pmd = lint_pmd_aspect(
     binary = "@@//tools/lint:pmd",
     rulesets = ["@@//:pmd.xml"],
 )
+
+checkstyle = lint_checkstyle_aspect(
+    binary = "@@//tools/lint:checkstyle",
+    config = "@@//:checkstyle.xml",
+)