chore: Cleanup examples-grails3-multiple-datasources

- `application.yml`: Format properly with 2 spaces and group config settings better. Remove unused config.
- `logback.xml`: Correct faulty pattern
- `Application`: Remove unused imports and old comment
- `build.gradle`: Use correct dependencies and narrow the scopes. Switch from `tomcat-jdbc` to `HikariCP` as this will be the new default. Apply Gradle plugins in subproject instead of having logic and conditions in the root build file apply them - much easier to see what's being applied. Use `astTransformation` configuration for dependencies that needs to be both `compileOnly` and `integrationTestCompileOnly`.

Author: matrei

examples/grails3-multiple-datasources/build.gradle

@@ -1,30 +1,41 @@
-group "examples"
+plugins {
+    id 'groovy'
+}
 
-dependencies {
-    implementation "org.springframework.boot:spring-boot-starter-logging"
-    implementation "org.springframework.boot:spring-boot-autoconfigure"
-    implementation "org.springframework.boot:spring-boot-starter-actuator"
-    implementation "org.springframework.boot:spring-boot-starter-tomcat"
-    implementation "jakarta.servlet:jakarta.servlet-api"
-    implementation "org.grails:grails-core"
-    implementation "org.grails:grails-dependencies", {
-        exclude module:'grails-datastore-simple'
-    }
+version = rootProject.version
+group = 'examples'
+
+configurations {
+    astTransformation
+}
 
-    implementation "org.grails:grails-web-boot"
-    implementation project(":grails-plugin")
+dependencies {
 
-    implementation "org.hibernate:hibernate-core-jakarta:$hibernateVersion"
+    astTransformation 'jakarta.servlet:jakarta.servlet-api'
+    astTransformation 'org.grails:grails-plugin-controllers'
 
-    runtimeOnly "com.bertramlabs.plugins:asset-pipeline-grails"
-    runtimeOnly "com.h2database:h2"
-    runtimeOnly "org.apache.tomcat:tomcat-jdbc"
-    runtimeOnly "org.grails.plugins:fields"
-    runtimeOnly "org.grails.plugins:scaffolding"
+    implementation project(':grails-plugin')
+    implementation 'org.grails:grails-core'
+    implementation 'org.grails:grails-plugin-domain-class'
 
-    testImplementation "org.grails:grails-gorm-testing-support"
+    runtimeOnly 'com.h2database:h2'
+    runtimeOnly 'com.zaxxer:HikariCP'
+    runtimeOnly 'org.grails:grails-plugin-databinding'
+    runtimeOnly 'org.grails:grails-plugin-controllers'
+    runtimeOnly 'org.springframework.boot:spring-boot-autoconfigure'
+    runtimeOnly 'org.springframework.boot:spring-boot-starter-logging'
+    runtimeOnly 'org.springframework.boot:spring-boot-starter-tomcat'
 
+    testImplementation 'org.grails:grails-testing-support'
 
-    integrationTestImplementation testFixtures("org.grails.plugins:geb")
+    testRuntimeOnly 'org.grails:grails-web-testing-support'
 }
 
+sourceSets {
+    main {
+        compileClasspath += configurations.astTransformation
+    }
+    integrationTest {
+        compileClasspath += configurations.astTransformation
+    }
+}

examples/grails3-multiple-datasources/grails-app/conf/application.yml

@@ -1,86 +1,72 @@
----
-grails:
-    profile: web
-    codegen:
-        defaultPackage: datasources
 info:
-    app:
-        name: '@info.app.name@'
-        version: '@info.app.version@'
-        grailsVersion: '@info.app.grailsVersion@'
-spring:
-    groovy:
-        template:
-            check-template-location: false
-    main:
-        allow-circular-references: true
-
+  app:
+    name: '@info.app.name@'
+    version: '@info.app.version@'
+    grailsVersion: '@info.app.grailsVersion@'
 ---
 grails:
-    mime:
-        disable:
-            accept:
-                header:
-                    userAgents:
-                        - Gecko
-                        - WebKit
-                        - Presto
-                        - Trident
-        types:
-            all: '*/*'
-            atom: application/atom+xml
-            css: text/css
-            csv: text/csv
-            form: application/x-www-form-urlencoded
-            html:
-              - text/html
-              - application/xhtml+xml
-            js: text/javascript
-            json:
-              - application/json
-              - text/json
-            multipartForm: multipart/form-data
-            rss: application/rss+xml
-            text: text/plain
-            hal:
-              - application/hal+json
-              - application/hal+xml
-            xml:
-              - text/xml
-              - application/xml
-    urlmapping:
-        cache:
-            maxsize: 1000
-    controllers:
-        defaultScope: singleton
-    converters:
-        encoding: UTF-8
-    hibernate:
-        cache:
-            queries: false
-    views:
-        default:
-            codec: html
-        gsp:
-            encoding: UTF-8
-            htmlcodec: xml
-            codecs:
-                expression: html
-                scriptlets: html
-                taglib: none
-                staticparts: none
-
+  profile: web
+  codegen:
+    defaultPackage: datasources
+  mime:
+    disable:
+      accept:
+        header:
+          userAgents:
+            - Gecko
+            - WebKit
+            - Presto
+            - Trident
+    types:
+      all: '*/*'
+      atom: application/atom+xml
+      css: text/css
+      csv: text/csv
+      form: application/x-www-form-urlencoded
+      html:
+        - text/html
+        - application/xhtml+xml
+      js: text/javascript
+      json:
+        - application/json
+        - text/json
+      multipartForm: multipart/form-data
+      rss: application/rss+xml
+      text: text/plain
+      hal:
+        - application/hal+json
+        - application/hal+xml
+      xml:
+        - text/xml
+        - application/xml
+  urlmapping:
+    cache:
+      maxsize: 1000
+  converters:
+    encoding: UTF-8
+  hibernate:
+    cache:
+      queries: false
+  views:
+    default:
+      codec: html
+    gsp:
+      encoding: UTF-8
+      htmlcodec: xml
+      codecs:
+        expression: html
+        scriptlets: html
+        taglib: none
+        staticparts: none
 ---
 dataSources:
-    dataSource:
-      pooled: true
-      jmxExport: true
-      driverClassName: org.h2.Driver
-      dbCreate: create-drop
-      url: jdbc:h2:mem:devDb;LOCK_TIMEOUT=10000;DB_CLOSE_ON_EXIT=FALSE
-    secondary:
-        pooled: true
-        jmxExport: true
-        driverClassName: org.h2.Driver
-        dbCreate: create-drop
-        url: jdbc:h2:mem:devDb2;LOCK_TIMEOUT=10000;DB_CLOSE_ON_EXIT=FALSE
+  dataSource:
+    pooled: true
+    driverClassName: org.h2.Driver
+    dbCreate: create-drop
+    url: jdbc:h2:mem:devDb;LOCK_TIMEOUT=10000;DB_CLOSE_ON_EXIT=FALSE
+  secondary:
+    pooled: true
+    driverClassName: org.h2.Driver
+    dbCreate: create-drop
+    url: jdbc:h2:mem:devDb2;LOCK_TIMEOUT=10000;DB_CLOSE_ON_EXIT=FALSE

examples/grails3-multiple-datasources/grails-app/conf/logback.xml

@@ -7,7 +7,7 @@
     <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
         <encoder>
             <charset>UTF-8</charset>
-            <pattern>'%clr(%d{yyyy-MM-dd HH:mm:ss.SSS}){faint} %clr(%5p) %clr(---){faint} %clr([%15.15t]){faint} %clr(%-40.40logger{39}){cyan} %clr(:){faint} %m%n%wex'</pattern>
+            <pattern>%clr(%d{yyyy-MM-dd HH:mm:ss.SSS}){faint} %clr(%5p) %clr(---){faint} %clr([%15.15t]){faint} %clr(%-40.40logger{39}){cyan} %clr(:){faint} %m%n%wex</pattern>
         </encoder>
     </appender>
 

examples/grails3-multiple-datasources/grails-app/init/datasources/Application.groovy

@@ -3,10 +3,7 @@ package datasources
 import grails.boot.GrailsApp
 import grails.boot.config.GrailsAutoConfiguration
 import groovy.transform.CompileStatic
-import org.springframework.boot.autoconfigure.EnableAutoConfiguration
-import org.springframework.boot.autoconfigure.jdbc.DataSourceTransactionManagerAutoConfiguration
 
-//@EnableAutoConfiguration(exclude = DataSourceTransactionManagerAutoConfiguration)
 @CompileStatic
 class Application extends GrailsAutoConfiguration {
     static void main(String[] args) {