chore: use gradle jib plugin

fixes #194
fixes #195

.checkstyle/checkstyle.xml

@@ -81,9 +81,6 @@
       <property name="checkLastCaseGroup" value="true"/>
     </module>
 
-    <!-- https://checkstyle.org/config_design.html#FinalClass -->
-    <module name="FinalClass"/>
-
     <!-- https://checkstyle.org/config_coding.html#FinalLocalVariable -->
     <module name="FinalLocalVariable">
       <property name="tokens" value="PARAMETER_DEF, VARIABLE_DEF"/> <!-- add PARAMETER_DEF -->
@@ -93,9 +90,6 @@
     <!-- https://checkstyle.org/config_whitespace.html#GenericWhitespace -->
     <module name="GenericWhitespace"/>
 
-    <!-- https://checkstyle.org/config_design.html#HideUtilityClassConstructor -->
-    <module name="HideUtilityClassConstructor"/>
-
     <!-- https://checkstyle.org/config_imports.html#IllegalImport -->
     <module name="IllegalImport">
       <property name="illegalPkgs" value="sun, jdk, com.sun"/>
@@ -136,11 +130,6 @@
     <!-- https://checkstyle.org/config_blocks.html#LeftCurly -->
     <module name="LeftCurly"/>
 
-    <!-- https://checkstyle.org/config_naming.html#MethodName -->
-    <module name="MethodName">
-      <property name="format" value="^(?:(?:.{1,3})|(?:[gs]et[^A-Z].*)|(?:(?:[^gsA-Z]..|.[^e].|..[^t]).+))$"/>
-    </module>
-
     <!-- https://checkstyle.org/config_whitespace.html#MethodParamPad -->
     <module name="MethodParamPad"/>
 

.gitattributes

@@ -0,0 +1,6 @@
+* text=auto
+
+*.bat text eol=crlf
+*.sh text eol=lf
+
+gradlew text eol=lf

build.gradle.kts

@@ -1,16 +1,24 @@
+import java.nio.file.StandardOpenOption
+import kotlin.io.path.Path
+import kotlin.io.path.bufferedWriter
+
+buildscript {
+  dependencies {
+    classpath("com.google.cloud.tools:jib-spring-boot-extension-gradle:0.1.0")
+  }
+}
+
 plugins {
   id("java")
 
   alias(libs.plugins.indra)
   alias(libs.plugins.indra.checkstyle)
+  alias(libs.plugins.jib)
   alias(libs.plugins.spotless)
   alias(libs.plugins.spring.dependency.management)
   alias(libs.plugins.spring.boot)
 }
 
-group = "io.papermc"
-version = "1.0.0-SNAPSHOT"
-
 repositories {
   mavenCentral()
 }
@@ -34,6 +42,52 @@ spotless {
   }
 }
 
+jib {
+  to {
+    image = "ghcr.io/papermc/bibliothek"
+    tags = setOf("latest", project.version.toString())
+  }
+
+  from {
+    image = "azul/zulu-openjdk-alpine:${indra.javaVersions().target().get()}-jre"
+    platforms {
+      // We can only build multi-arch images when pushing to a registry, not when building locally
+      val requestedTasks = gradle.startParameter.taskNames
+      if ("jibBuildTar" in requestedTasks || "jibDockerBuild" in requestedTasks) {
+        platform {
+          // todo: better logic
+          architecture = when (System.getProperty("os.arch")) {
+            "aarch64" -> "arm64"
+            else -> "amd64"
+          }
+          os = "linux"
+        }
+      } else {
+        platform {
+          architecture = "amd64"
+          os = "linux"
+        }
+        platform {
+          architecture = "arm64"
+          os = "linux"
+        }
+      }
+    }
+  }
+
+  pluginExtensions {
+    pluginExtension {
+      implementation = "com.google.cloud.tools.jib.gradle.extension.springboot.JibSpringBootExtension"
+    }
+  }
+
+  container {
+    args = listOf("--spring.config.additional-location=optional:file:/config/")
+    ports = listOf("8080")
+    labels.put("org.opencontainers.image.source", indra.scm().map { it.url() })
+  }
+}
+
 dependencies {
   annotationProcessor("org.springframework.boot", "spring-boot-configuration-processor")
   checkstyle(libs.stylecheck)
@@ -48,20 +102,30 @@ dependencies {
 }
 
 tasks {
-  bootJar {
-    launchScript()
+  val outputImageId = register("printJibMeta") {
+    description = "Expose image information as an output for GitHub Actions"
+
+    val jibImageJson = project.jib.outputPaths.imageJson
+    val githubOutput = providers.environmentVariable("GITHUB_OUTPUT")
+    inputs.property("jibImageJson", jibImageJson)
+    inputs.property("githubOutput", githubOutput).optional(true)
+
+    doLast {
+      if (!githubOutput.isPresent) {
+        didWork = false
+        return@doLast
+      }
+
+      Path(githubOutput.get()).bufferedWriter(Charsets.UTF_8, options = arrayOf(StandardOpenOption.CREATE, StandardOpenOption.APPEND)).use {
+        it.write("imageJson=")
+        file(jibImageJson).bufferedReader(Charsets.UTF_8).use { meta -> meta.transferTo(it) }
+      }
+    }
   }
 
-  // From StackOverflow: https://stackoverflow.com/a/53087407
-  // Licensed under: CC BY-SA 4.0
-  // Adapted to Kotlin
-  register<Copy>("buildForDocker") {
-    from(bootJar)
-    into("build/libs/docker")
-    rename { fileName ->
-      // a simple way is to remove the "-$version" from the jar filename
-      // but you can customize the filename replacement rule as you wish.
-      fileName.replace("-$version", "")
+  sequenceOf(jib, jibDockerBuild, jibBuildTar).forEach {
+    it.configure {
+      finalizedBy(outputImageId.name)
     }
   }
 }

gradle.properties

@@ -0,0 +1,2 @@
+group = io.papermc
+version = 1.0.0-SNAPSHOT

gradle/libs.versions.toml

@@ -4,11 +4,12 @@ indra = "3.1.3"
 [plugins]
 indra = { id = "net.kyori.indra", version.ref = "indra" }
 indra-checkstyle = { id = "net.kyori.indra.checkstyle", version.ref = "indra" }
+jib = { id = "com.google.cloud.tools.jib", version = "3.4.2" }
 spotless = { id = "com.diffplug.spotless", version = "6.25.0" }
 spring-boot = { id = "org.springframework.boot", version = "3.2.2" }
 spring-dependency-management = { id = "io.spring.dependency-management", version = "1.1.4" }
 
 [libraries]
 jetbrains-annotations = { group = "org.jetbrains", name = "annotations", version = "24.1.0" }
-springdoc-openapi-starter-webmvc-ui = { group = "org.springdoc", name = "springdoc-openapi-starter-webmvc-ui", version = "2.3.0" }
+springdoc-openapi-starter-webmvc-ui = { group = "org.springdoc", name = "springdoc-openapi-starter-webmvc-ui", version = "2.5.0" }
 stylecheck = { group = "ca.stellardrift", name = "stylecheck", version = "0.2.1" }

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.5-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.7-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME

gradlew

@@ -145,15 +145,15 @@ if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
     case $MAX_FD in #(
       max*)
         # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
-        # shellcheck disable=SC3045
+        # shellcheck disable=SC2039,SC3045
         MAX_FD=$( ulimit -H -n ) ||
             warn "Could not query maximum file descriptor limit"
     esac
     case $MAX_FD in  #(
       '' | soft) :;; #(
       *)
         # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
-        # shellcheck disable=SC3045
+        # shellcheck disable=SC2039,SC3045
         ulimit -n "$MAX_FD" ||
             warn "Could not set maximum file descriptor limit to $MAX_FD"
     esac
@@ -202,11 +202,11 @@ fi
 # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
 DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
 
-# Collect all arguments for the java command;
-#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
-#     shell script including quotes and variable substitutions, so put them in
-#     double quotes to make sure that they get re-expanded; and
-#   * put everything else in single quotes, so that it's not re-expanded.
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
 
 set -- \
         "-Dorg.gradle.appname=$APP_BASE_NAME" \

src/main/java/io/papermc/bibliothek/BibliothekApplication.java

@@ -34,7 +34,6 @@
 })
 @SpringBootApplication
 @ServletComponentScan
-@SuppressWarnings("checkstyle:HideUtilityClassConstructor")
 public class BibliothekApplication {
   public static void main(final String[] args) {
     SpringApplication.run(BibliothekApplication.class, args);

src/main/java/io/papermc/bibliothek/configuration/AppConfiguration.java

@@ -37,42 +37,34 @@ public class AppConfiguration {
   private String apiVersion;
   private @NotNull Path storagePath;
 
-  @SuppressWarnings("checkstyle:MethodName")
   public URL getApiBaseUrl() {
     return this.apiBaseUrl;
   }
 
-  @SuppressWarnings("checkstyle:MethodName")
   public void setApiBaseUrl(final URL apiBaseUrl) {
     this.apiBaseUrl = apiBaseUrl;
   }
 
-  @SuppressWarnings("checkstyle:MethodName")
   public String getApiTitle() {
     return this.apiTitle;
   }
 
-  @SuppressWarnings("checkstyle:MethodName")
   public void setApiTitle(final String apiTitle) {
     this.apiTitle = apiTitle;
   }
 
-  @SuppressWarnings("checkstyle:MethodName")
   public String getApiVersion() {
     return this.apiVersion;
   }
 
-  @SuppressWarnings("checkstyle:MethodName")
   public void setApiVersion(final String apiVersion) {
     this.apiVersion = apiVersion;
   }
 
-  @SuppressWarnings("checkstyle:MethodName")
   public Path getStoragePath() {
     return this.storagePath;
   }
 
-  @SuppressWarnings("checkstyle:MethodName")
   public void setStoragePath(final Path storagePath) {
     this.storagePath = storagePath;
   }

src/main/java/io/papermc/bibliothek/controller/v2/DownloadController.java

@@ -63,7 +63,6 @@
 
 @RestController
 @RequestMapping(produces = MediaType.APPLICATION_JSON_VALUE)
-@SuppressWarnings("checkstyle:FinalClass")
 public class DownloadController {
   private static final CacheControl CACHE = HTTP.sMaxAgePublicCache(Duration.ofDays(7));
   private final AppConfiguration configuration;

src/main/java/io/papermc/bibliothek/controller/v2/ProjectController.java

@@ -50,7 +50,6 @@
 
 @RestController
 @RequestMapping(produces = MediaType.APPLICATION_JSON_VALUE)
-@SuppressWarnings("checkstyle:FinalClass")
 public class ProjectController {
   private static final CacheControl CACHE = HTTP.sMaxAgePublicCache(Duration.ofMinutes(30));
   private final ProjectCollection projects;

src/main/java/io/papermc/bibliothek/controller/v2/ProjectsController.java

@@ -42,7 +42,6 @@
 
 @RestController
 @RequestMapping(produces = MediaType.APPLICATION_JSON_VALUE)
-@SuppressWarnings("checkstyle:FinalClass")
 public class ProjectsController {
   private static final CacheControl CACHE = HTTP.sMaxAgePublicCache(Duration.ofDays(7));
   private final ProjectCollection projects;

src/main/java/io/papermc/bibliothek/controller/v2/VersionBuildController.java

@@ -55,7 +55,6 @@
 
 @RestController
 @RequestMapping(produces = MediaType.APPLICATION_JSON_VALUE)
-@SuppressWarnings("checkstyle:FinalClass")
 public class VersionBuildController {
   private static final CacheControl CACHE = HTTP.sMaxAgePublicCache(Duration.ofDays(7));
   private final ProjectCollection projects;

src/main/java/io/papermc/bibliothek/controller/v2/VersionBuildsController.java

@@ -53,7 +53,6 @@
 
 @RestController
 @RequestMapping(produces = MediaType.APPLICATION_JSON_VALUE)
-@SuppressWarnings("checkstyle:FinalClass")
 public class VersionBuildsController {
   private static final CacheControl CACHE = HTTP.sMaxAgePublicCache(Duration.ofMinutes(5));
   private final ProjectCollection projects;

src/main/java/io/papermc/bibliothek/controller/v2/VersionController.java

@@ -51,7 +51,6 @@
 
 @RestController
 @RequestMapping(produces = MediaType.APPLICATION_JSON_VALUE)
-@SuppressWarnings("checkstyle:FinalClass")
 public class VersionController {
   private static final CacheControl CACHE = HTTP.sMaxAgePublicCache(Duration.ofMinutes(5));
   private final ProjectCollection projects;

src/main/java/io/papermc/bibliothek/controller/v2/VersionFamilyBuildsController.java

@@ -58,7 +58,6 @@
 
 @RestController
 @RequestMapping(produces = MediaType.APPLICATION_JSON_VALUE)
-@SuppressWarnings("checkstyle:FinalClass")
 public class VersionFamilyBuildsController {
   private static final CacheControl CACHE = HTTP.sMaxAgePublicCache(Duration.ofMinutes(5));
   private final ProjectCollection projects;

src/main/java/io/papermc/bibliothek/controller/v2/VersionFamilyController.java

@@ -51,7 +51,6 @@
 
 @RestController
 @RequestMapping(produces = MediaType.APPLICATION_JSON_VALUE)
-@SuppressWarnings("checkstyle:FinalClass")
 public class VersionFamilyController {
   private static final CacheControl CACHE = HTTP.sMaxAgePublicCache(Duration.ofMinutes(5));
   private final ProjectCollection projects;

src/main/java/io/papermc/bibliothek/exception/Advice.java

@@ -33,7 +33,6 @@
 import org.springframework.web.servlet.NoHandlerFoundException;
 
 @ControllerAdvice
-@SuppressWarnings("checkstyle:FinalClass")
 class Advice {
   private final ObjectMapper json;