Auto-generate auto configuration classes tables

spring-boot-docs/pom.xml

@@ -116,6 +116,35 @@
 									</artifactItems>
 								</configuration>
 							</execution>
+							<execution>
+								<id>unpack-spring-factories</id>
+								<phase>generate-resources</phase>
+								<goals>
+									<goal>unpack</goal>
+								</goals>
+								<configuration>
+									<artifactItems>
+										<artifactItem>
+											<groupId>org.springframework.boot</groupId>
+											<artifactId>spring-boot-autoconfigure</artifactId>
+											<version>${project.version}</version>
+											<outputDirectory>
+												${project.build.directory}/auto-config/spring-boot-autoconfigure
+											</outputDirectory>
+											<includes>META-INF/spring.factories</includes>
+										</artifactItem>
+										<artifactItem>
+											<groupId>org.springframework.boot</groupId>
+											<artifactId>spring-boot-actuator</artifactId>
+											<version>${project.version}</version>
+											<outputDirectory>
+												${project.build.directory}/auto-config/spring-boot-actuator
+											</outputDirectory>
+											<includes>META-INF/spring.factories</includes>
+										</artifactItem>
+									</artifactItems>
+								</configuration>
+							</execution>
 						</executions>
 					</plugin>
 					<plugin>
@@ -144,6 +173,31 @@
 							</transformationSets>
 						</configuration>
 					</plugin>
+					<plugin>
+						<groupId>org.codehaus.gmavenplus</groupId>
+						<artifactId>gmavenplus-plugin</artifactId>
+						<version>1.2</version>
+						<executions>
+							<execution>
+								<goals>
+									<goal>execute</goal>
+								</goals>
+								<phase>generate-resources</phase>
+							</execution>
+						</executions>
+						<configuration>
+							<scripts>
+								<script>file:///${project.basedir}/src/main/groovy/generateAutoConfigurationClassTables.groovy</script>
+							</scripts>
+						</configuration>
+						<dependencies>
+							<dependency>
+								<groupId>org.codehaus.groovy</groupId>
+								<artifactId>groovy-all</artifactId>
+								<version>${groovy.version}</version>
+							</dependency>
+						</dependencies>
+					</plugin>
 					<plugin>
 						<groupId>org.asciidoctor</groupId>
 						<artifactId>asciidoctor-maven-plugin</artifactId>

spring-boot-docs/src/main/groovy/generateAutoConfigurationClassTables.groovy

+def processModule(File moduleDir, File generatedResourcesDir) {
+	def moduleName = moduleDir.name
+	def factoriesFile = new File(moduleDir, 'META-INF/spring.factories')
+	new File(generatedResourcesDir, "auto-configuration-classes-${moduleName}.adoc")
+			.withPrintWriter {
+					generateAutoConfigurationClassTable(moduleName, factoriesFile, it)
+	}
+}
+
+def generateAutoConfigurationClassTable(String module, File factories, PrintWriter writer) {
+	writer.println '[cols="4,1"]'
+	writer.println '|==='
+	writer.println '|Configuration Class | Links'
+
+	getAutoConfigurationClasses(factories).each {
+		writer.println ''
+		writer.println "|{github-code}/$module/src/main/java/$it.path.{sc-ext}[$it.name]"
+		writer.println "|{dc-root}/$it.path.{dc-ext}[javadoc]"
+	}
+
+	writer.println '|==='
+}
+
+def getAutoConfigurationClasses(File factories) {
+	factories.withInputStream {
+		def properties = new Properties()
+		properties.load(it)
+		properties.get('org.springframework.boot.autoconfigure.EnableAutoConfiguration')
+				.split(',')
+				.collect {
+					def path = it.replace('.', '/')
+					def name = it.substring(it.lastIndexOf('.') + 1)
+					[ 'path': path, 'name': name]
+				}
+				.sort {a, b -> a.name.compareTo(b.name)}
+	}
+}
+
+def autoConfigDir = new File(project.build.directory, 'auto-config')
+def generatedResourcesDir = new File(project.build.directory, 'generated-resources')
+autoConfigDir.eachDir { processModule(it, generatedResourcesDir) }
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