Referencing information in pom.xml for the list of tested databases

Closes: #21349

docs/guides/server/db.adoc

@@ -15,13 +15,13 @@ This {section} explains how to configure the Keycloak server to store data in a
 The server has built-in support for different databases. You can query the available databases by viewing the expected values for the `db` configuration option. The following table lists the supported databases and their tested versions.
 
 |===
-|Database | Tested Version
+|Database | Option value | Tested Version
 
-|mariadb| 10
-|mssql| 2016
-|mysql| 8
-|oracle| 12c
-|postgres| 15
+|MariaDB Server | `mariadb` | ${properties["mariadb.version"]}
+|Microsoft SQL Server | `mssql` | ${properties["mssql.version"]?replace("-latest","")}
+|MySQL | `mysql` | ${properties["mysql.version"]}
+|Oracle Database | `oracle` | ${properties["oracledb.version"]}
+|PostgreSQL | `postgres` | ${properties["postgresql.version"]}
 |===
 
 By default, the server uses the `dev-file` database. This is the default database that the server will use to persist data and
@@ -131,16 +131,18 @@ Unicode is supported for a PostgreSQL database when the database character set i
 
 . Check the default character set for a PostgreSQL cluster by entering the following SQL command.
 +
-```
+[source]
+----
 show server_encoding;
-```
+----
 
 . If the default character set is not UTF 8, create the database with the UTF8 as the default character set using a command such as:
 
 +
-```
+[source]
+----
 create database keycloak with encoding 'UTF8';
-```
+----
 
 == Changing database locking timeout in a cluster configuration
 

docs/maven-plugin/src/main/java/org/keycloak/guides/maven/GuideBuilder.java

@@ -2,6 +2,7 @@ package org.keycloak.guides.maven;
 
 import freemarker.template.TemplateException;
 import org.apache.maven.plugin.logging.Log;
+import org.apache.maven.project.MavenProject;
 import org.keycloak.common.Version;
 
 import java.io.File;
@@ -16,7 +17,7 @@ public class GuideBuilder {
     private final File targetDir;
     private final Log log;
 
-    public GuideBuilder(File srcDir, File targetDir, Log log) throws IOException {
+    public GuideBuilder(File srcDir, File targetDir, Log log, MavenProject project) throws IOException {
         this.srcDir = srcDir;
         this.targetDir = targetDir;
         this.log = log;
@@ -24,13 +25,16 @@ public class GuideBuilder {
         Map<String, Object> globalAttributes = new HashMap<>();
         globalAttributes.put("ctx", new Context(srcDir));
         globalAttributes.put("version", Version.VERSION);
+        globalAttributes.put("properties", project.getProperties());
 
         this.freeMarker = new FreeMarker(srcDir.getParentFile(), globalAttributes);
     }
 
     public void build() throws TemplateException, IOException {
         if (!srcDir.isDirectory()) {
-            srcDir.mkdir();
+            if (!srcDir.mkdir()) {
+                throw new RuntimeException("Can't create folder " + srcDir);
+            }
         }
 
         for (String t : srcDir.list((dir, name) -> name.endsWith(".adoc"))) {

docs/maven-plugin/src/main/java/org/keycloak/guides/maven/GuideMojo.java

@@ -6,6 +6,7 @@ import org.apache.maven.plugin.logging.Log;
 import org.apache.maven.plugins.annotations.LifecyclePhase;
 import org.apache.maven.plugins.annotations.Mojo;
 import org.apache.maven.plugins.annotations.Parameter;
+import org.apache.maven.project.MavenProject;
 import org.codehaus.plexus.util.FileUtils;
 
 import java.io.File;
@@ -19,6 +20,9 @@ public class GuideMojo extends AbstractMojo {
     @Parameter(property = "project.build.directory")
     private String targetDir;
 
+    @Parameter(defaultValue = "${project}", readonly = true, required = true)
+    private MavenProject project;
+
     @Override
     public void execute() throws MojoFailureException {
         try {
@@ -42,7 +46,7 @@ public class GuideMojo extends AbstractMojo {
                     log.info("Guide dir: " + srcDir.getAbsolutePath());
                     log.info("Target dir: " + targetDir.getAbsolutePath());
 
-                    GuideBuilder g = new GuideBuilder(srcDir, targetDir, log);
+                    GuideBuilder g = new GuideBuilder(srcDir, targetDir, log, project);
                     g.build();
                 }
             }

pom.xml

@@ -157,7 +157,7 @@
         <twitter4j.version>4.1.2</twitter4j.version>
         <jna.version>4.5.1</jna.version>
 
-        <!-- Databases -->
+        <!-- Databases - also published to db.adoc as "Tested Version" -->
         <mysql.version>8.0</mysql.version>
         <mysql-jdbc.version>8.0.30</mysql-jdbc.version>
         <postgresql.version>15</postgresql.version>