feat(java-sdk): setup gradle project structure

scripts/generate-sdk/.openapi-generator-ignore-java

@@ -3,7 +3,19 @@ git_push.sh
 .gitignore
 api/openapi.yaml
 tox.ini
-**/.github/**
 **/AndroidManifest.xml
+
+# we have our own github workflows
+.github/**
+
+# Ignore maven and simple build tool (sbt) stuff, because we use gradle
 pom.xml
-build.sbt
+build.sbt
+
+# there's no content in it
+gradle.properties
+
+# gradle wrapper (we don't need it because we use the generated projects as gradle subprojects)
+gradlew.bat
+gradlew
+gradle/**

scripts/generate-sdk/languages/java.sh

@@ -124,13 +124,6 @@ generate_java_sdk() {
         # Remove unnecessary files
         rm "${SERVICES_FOLDER}/${service}/.openapi-generator-ignore"
         rm -r "${SERVICES_FOLDER}/${service}/.openapi-generator/"
-        rm "${SERVICES_FOLDER}/${service}/.github/workflows/maven.yml"
-
-        # If the service has a README.md file, move them inside the service folder
-        if [ -f ${sdk_services_backup_dir}/${service}/README.md ]; then
-            echo "Found ${service} \"README.md\" file"
-            cp -r ${sdk_services_backup_dir}/${service}/README.md ${SERVICES_FOLDER}/${service}/README.md
-        fi
 
         # If the service has a CHANGELOG file, move it inside the service folder
         if [ -f ${sdk_services_backup_dir}/${service}/CHANGELOG.md ]; then
@@ -157,4 +150,7 @@ generate_java_sdk() {
         fi
 
     done
+
+    cd "${SDK_REPO_LOCAL_PATH}"
+    make fmt
 }

templates/java/README.mustache

@@ -16,7 +16,7 @@ This package is part of the STACKIT Java SDK. For additional information, please
 ## Requirements
 
 Building the API client library requires:
-1. Java 1.8+
+1. Java SDK (version 11 to 21 should be supported) installed on your system
 
 ## Installation
 

templates/java/build.gradle.mustache

@@ -0,0 +1,53 @@
+{{! This template was customized to allow the services to be a subprojects in one big gradle project. }}
+{{! Original template: https://github.com/OpenAPITools/openapi-generator/blob/v7.14.0/modules/openapi-generator/src/main/resources/Java/libraries/okhttp-gson/build.gradle.mustache }}
+
+ext {
+    {{#swagger1AnnotationLibrary}}
+    swagger_annotations_version = "1.6.9"
+    {{/swagger1AnnotationLibrary}}
+    {{#swagger2AnnotationLibrary}}
+    swagger_annotations_version = "2.2.9"
+    {{/swagger2AnnotationLibrary}}
+    jakarta_annotation_version = "1.3.5"
+    {{#useBeanValidation}}
+    bean_validation_version = "2.0.2"
+    {{/useBeanValidation}}
+}
+
+dependencies {
+    {{#swagger1AnnotationLibrary}}
+    implementation "io.swagger:swagger-annotations:$swagger_annotations_version"
+    {{/swagger1AnnotationLibrary}}
+    {{#swagger2AnnotationLibrary}}
+    implementation "io.swagger.core.v3:swagger-annotations:$swagger_annotations_version"
+    {{/swagger2AnnotationLibrary}}
+    implementation "com.google.code.findbugs:jsr305:3.0.2"
+    implementation 'com.squareup.okhttp3:okhttp:4.12.0'
+    implementation 'com.squareup.okhttp3:logging-interceptor:4.12.0'
+    implementation 'com.google.code.gson:gson:2.9.1'
+    implementation 'io.gsonfire:gson-fire:1.9.0'
+    implementation 'jakarta.ws.rs:jakarta.ws.rs-api:2.1.6'
+    {{#openApiNullable}}
+    implementation 'org.openapitools:jackson-databind-nullable:0.2.6'
+    {{/openApiNullable}}
+    {{#withAWSV4Signature}}
+    implementation 'software.amazon.awssdk:auth:2.20.157'
+    {{/withAWSV4Signature}}
+    {{#hasOAuthMethods}}
+    implementation group: 'org.apache.oltu.oauth2', name: 'org.apache.oltu.oauth2.client', version: '1.0.2'
+    {{/hasOAuthMethods}}
+    implementation group: 'org.apache.commons', name: 'commons-lang3', version: '3.17.0'
+    {{#joda}}
+    implementation 'joda-time:joda-time:2.9.9'
+    {{/joda}}
+    {{#dynamicOperations}}
+    implementation 'io.swagger.parser.v3:swagger-parser-v3:2.0.30'
+    {{/dynamicOperations}}
+    implementation "jakarta.annotation:jakarta.annotation-api:$jakarta_annotation_version"
+    {{#useBeanValidation}}
+    implementation "jakarta.validation:jakarta.validation-api:$bean_validation_version"
+    {{/useBeanValidation}}
+    testImplementation 'org.junit.jupiter:junit-jupiter-api:5.10.3'
+    testImplementation 'org.mockito:mockito-core:3.12.4'
+    testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.10.3'
+}