[ISSUE apache#1054] Build caching optimizations (apache#4689)

* remove checkstyleMain dependency on spotlessApply

spotlessApply was reformatting files on every build causing cache misses.

* limit the target of spotlessJava to just src java files

* use a TempDir for testing the onChange method, changing file in place caused cache miss

* enable gradle build cache

build.gradle

@@ -93,7 +93,6 @@ allprojects {
                   .exclude('**/org/apache/eventmesh/connector/openfunction/client/EventMeshGrpcService**')
                   .exclude('**/org/apache/eventmesh/connector/openfunction/client/CallbackServiceGrpc**')
                   .exclude('**/org/apache/eventmesh/connector/jdbc/antlr**')
-                  .dependsOn(spotlessApply)
 
     dependencies {
         repositories {
@@ -110,7 +109,7 @@ allprojects {
         enforceCheck false
         java {
             target project.fileTree(project.projectDir) {
-                include '**/*.java'
+                include 'src/*/java/**/*.java'
                 exclude '**/org/apache/eventmesh/**/protos**'
                 exclude '**/org/apache/eventmesh/connector/openfunction/client/EventMeshGrpcService**'
                 exclude '**/org/apache/eventmesh/connector/openfunction/client/CallbackServiceGrpc**'

eventmesh-common/src/test/java/org/apache/eventmesh/common/file/WatchFileManagerTest.java

@@ -24,37 +24,45 @@
 import java.io.FileReader;
 import java.io.FileWriter;
 import java.io.IOException;
+import java.nio.file.Files;
 import java.util.Properties;
 import java.util.concurrent.TimeUnit;
 
 import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.io.TempDir;
 
 public class WatchFileManagerTest {
 
+    @TempDir
+    File tempConfigDir;
+
     @Test
     public void testWatchFile() throws IOException, InterruptedException {
         String file = WatchFileManagerTest.class.getResource("/configuration.properties").getFile();
         File f = new File(file);
+        File tempConfigFile = new File(tempConfigDir, "configuration.properties");
+        Files.copy(f.toPath(), tempConfigFile.toPath());
+
         final FileChangeListener fileChangeListener = new FileChangeListener() {
 
             @Override
             public void onChanged(FileChangeContext changeContext) {
-                Assertions.assertEquals(f.getName(), changeContext.getFileName());
-                Assertions.assertEquals(f.getParent(), changeContext.getDirectoryPath());
+                Assertions.assertEquals(tempConfigFile.getName(), changeContext.getFileName());
+                Assertions.assertEquals(tempConfigFile.getParent(), changeContext.getDirectoryPath());
             }
 
             @Override
             public boolean support(FileChangeContext changeContext) {
-                return changeContext.getWatchEvent().context().toString().contains(f.getName());
+                return changeContext.getWatchEvent().context().toString().contains(tempConfigFile.getName());
             }
         };
-        WatchFileManager.registerFileChangeListener(f.getParent(), fileChangeListener);
+        WatchFileManager.registerFileChangeListener(tempConfigFile.getParent(), fileChangeListener);
 
         Properties properties = new Properties();
-        properties.load(new BufferedReader(new FileReader(file)));
+        properties.load(new BufferedReader(new FileReader(tempConfigFile)));
         properties.setProperty("eventMesh.server.newAdd", "newAdd");
-        FileWriter fw = new FileWriter(file);
+        FileWriter fw = new FileWriter(tempConfigFile);
         properties.store(fw, "newAdd");
 
         ThreadUtils.sleep(500, TimeUnit.MILLISECONDS);

gradle.properties

@@ -33,3 +33,4 @@ signEnabled=false
 
 org.gradle.warning.mode=none
 org.gradle.jvmargs=-Xmx4096m -XX:MaxMetaspaceSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8
+org.gradle.caching=true