improve heaer of generated source files

build.gradle

@@ -55,6 +55,17 @@ repositories {
     }
 }
 
+sourceSets {
+  main {
+    java {
+        srcDirs "${buildDir}/version"
+    }
+  }
+}
+
+compileKotlin.dependsOn "generateVersion"
+
+
 test {
     useJUnitPlatform()
 }
@@ -156,4 +167,5 @@ dokka {
     outputDirectory = "$buildDir/docs/kotlin"
 }
 
+apply plugin: VersionPlugin
 apply from: "${rootProject.rootDir}/gradle/publishing.gradle"

buildSrc/src/main/groovy/VersionPlugin.groovy

@@ -0,0 +1,44 @@
+import org.gradle.api.Action
+import org.gradle.api.Plugin
+import org.gradle.api.Project
+
+/**
+ * provides a "generateVersion" task to a create a simple Version.java class:
+ *
+ * <pre>{@code
+ * package io.openapiprocessor.spring;
+ *
+ * public class Version {
+ *     public static final String version = "${project.version}";
+ * }
+ * }</pre>
+ *
+ *
+ * The io/openapiprocessor/spring/Version.java file is generated to:
+ *
+ * $(project.buildDir}/main/java
+ *
+ * Add it as a source directory to include it in compilation.
+ */
+class VersionPlugin implements Plugin<Project> {
+
+    void apply(Project project) {
+        project.afterEvaluate (new Action<Project> () {
+
+            @Override
+            void execute (Project prj) {
+                prj.tasks.register ('generateVersion', VersionTask , new Action<VersionTask>() {
+
+                    @Override
+                    void execute (VersionTask task) {
+                        task.targetDir = prj.buildDir
+                        task.version = prj.version
+                    }
+
+                })
+            }
+
+        })
+    }
+
+}

buildSrc/src/main/groovy/VersionTask.groovy

@@ -0,0 +1,52 @@
+import org.gradle.api.DefaultTask
+import org.gradle.api.tasks.Internal
+import org.gradle.api.tasks.OutputDirectory
+import org.gradle.api.tasks.TaskAction
+
+import java.nio.file.Files
+import java.nio.file.Path
+import java.time.Instant
+
+/**
+ * simple task to create a Version class.
+ */
+class VersionTask extends DefaultTask {
+
+    /**
+     * Target directory for the generated version class.
+     *
+     * Used by gradle for the up-to-date check.
+     */
+    @OutputDirectory
+    String targetDir
+
+    @Internal
+    String version
+
+    /**
+     * generate the version class.
+     */
+    @TaskAction
+    void generateVersion () {
+        def path = Path.of (targetDir, "version", "io", "openapiprocessor", "spring")
+        Files.createDirectories(path)
+
+        def target = path.resolve ("Version.java")
+
+        target.text = """\
+/*
+ * DO NOT MODIFY - this file was auto generated by buildSrc/src/main/groovy/VersionPlugin.groovy
+ *
+ * ${Instant.now ().toString ()}
+ */
+
+package io.openapiprocessor.spring;
+
+public class Version {
+    public static final String version = "${version}"; 
+}
+
+"""
+    }
+
+}

src/main/groovy/com/github/hauner/openapi/spring/writer/java/HeaderWriter.groovy

@@ -17,6 +17,9 @@
 package com.github.hauner.openapi.spring.writer.java
 
 import com.github.hauner.openapi.core.writer.java.SimpleWriter
+import io.openapiprocessor.spring.Version
+
+import java.time.Instant
 
 /**
  * Writer for a simple header of the generated interfaces & classes.
@@ -27,8 +30,11 @@ class HeaderWriter implements SimpleWriter {
 
     static String HEADER = """\
 /*
- * This class is auto generated by https://github.com/hauner/openapi-processor-spring.
- * DO NOT EDIT.
+ * DO NOT MODIFY - this class was auto generated by openapi-processor-spring
+ *
+ * ${Version.version}
+ * ${Instant.now().toString()} 
+ * https://docs.openapiprocessor.io/spring 
  */
 
 """

src/testInt/groovy/com/github/hauner/openapi/processor/spring/EndToEndBase.groovy

@@ -0,0 +1,46 @@
+/*
+ * Copyright 2020 the original authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.github.hauner.openapi.processor.spring
+
+import com.github.hauner.openapi.spring.writer.java.HeaderWriter
+import com.github.hauner.openapi.test.ProcessorTestBase
+import com.github.hauner.openapi.test.TestSet
+import org.junit.BeforeClass
+
+class EndToEndBase extends ProcessorTestBase {
+
+    EndToEndBase (TestSet testSet) {
+        super (testSet)
+    }
+
+    @BeforeClass
+    static void setConstantHeaderWriterText () {
+        // set a "fixed" header, we don't want moving version/date/time parts
+
+        HeaderWriter.HEADER = """\
+/*
+ * DO NOT MODIFY - this class was auto generated by openapi-processor-spring
+ *
+ * test
+ * time
+ * https://docs.openapiprocessor.io/spring 
+ */
+
+"""
+    }
+
+}

src/testInt/groovy/com/github/hauner/openapi/processor/spring/ProcessorEndToEndTest.groovy

@@ -18,7 +18,6 @@ package com.github.hauner.openapi.processor.spring
 
 import com.github.hauner.openapi.core.parser.ParserType
 import com.github.hauner.openapi.spring.processor.SpringProcessor
-import com.github.hauner.openapi.test.ProcessorTestBase
 import com.github.hauner.openapi.test.TestSet
 import org.junit.Test
 import org.junit.runner.RunWith
@@ -28,7 +27,7 @@ import org.junit.runners.Parameterized
  * using Junit so IDEA adds a "<Click to see difference>" when using assertEquals().
  */
 @RunWith(Parameterized)
-class ProcessorEndToEndTest extends ProcessorTestBase {
+class ProcessorEndToEndTest extends EndToEndBase {
 
     @Parameterized.Parameters(name = "{0}")
     static Collection<TestSet> sources () {

src/testInt/groovy/com/github/hauner/openapi/processor/spring/ProcessorJimsFileSystemTest.groovy

@@ -30,7 +30,7 @@ import org.junit.runners.Parameterized
  * using Junit so IDEA adds a "<Click to see difference>" when using assertEquals().
  */
 @RunWith(Parameterized)
-class ProcessorJimsFileSystemTest extends ProcessorTestBase {
+class ProcessorJimsFileSystemTest extends EndToEndBase {
 
     @Parameterized.Parameters(name = "{0}")
     static Collection<TestSet> sources () {

src/testInt/groovy/com/github/hauner/openapi/processor/spring/ProcessorPendingTest.groovy

@@ -27,7 +27,7 @@ import org.junit.runners.Parameterized
 
 //@Ignore
 @RunWith(Parameterized)
-class ProcessorPendingTest extends ProcessorTestBase {
+class ProcessorPendingTest extends EndToEndBase {
 
     @Parameterized.Parameters(name = "{0}")
     static Collection<TestSet> sources () {

src/testInt/resources/tests/endpoint-http-mapping/generated/api/EndpointApi.java

@@ -1,6 +1,9 @@
 /*
- * This class is auto generated by https://github.com/hauner/openapi-processor-spring.
- * DO NOT EDIT.
+ * DO NOT MODIFY - this class was auto generated by openapi-processor-spring
+ *
+ * test
+ * time
+ * https://docs.openapiprocessor.io/spring
  */
 
 package generated.api;

src/testInt/resources/tests/params-complex-data-types/generated/api/Api.java

@@ -1,6 +1,9 @@
 /*
- * This class is auto generated by https://github.com/hauner/openapi-processor-spring.
- * DO NOT EDIT.
+ * DO NOT MODIFY - this class was auto generated by openapi-processor-spring
+ *
+ * test
+ * time
+ * https://docs.openapiprocessor.io/spring
  */
 
 package generated.api;

src/testInt/resources/tests/params-complex-data-types/generated/model/Props.java

@@ -1,6 +1,9 @@
 /*
- * This class is auto generated by https://github.com/hauner/openapi-processor-spring.
- * DO NOT EDIT.
+ * DO NOT MODIFY - this class was auto generated by openapi-processor-spring
+ *
+ * test
+ * time
+ * https://docs.openapiprocessor.io/spring
  */
 
 package generated.model;

src/testInt/resources/tests/params-pageable-mapping/generated/api/Api.java

@@ -1,6 +1,9 @@
 /*
- * This class is auto generated by https://github.com/hauner/openapi-processor-spring.
- * DO NOT EDIT.
+ * DO NOT MODIFY - this class was auto generated by openapi-processor-spring
+ *
+ * test
+ * time
+ * https://docs.openapiprocessor.io/spring
  */
 
 package generated.api;

src/testInt/resources/tests/params-path-simple-data-types/generated/api/EndpointApi.java

@@ -1,6 +1,9 @@
 /*
- * This class is auto generated by https://github.com/hauner/openapi-processor-spring.
- * DO NOT EDIT.
+ * DO NOT MODIFY - this class was auto generated by openapi-processor-spring
+ *
+ * test
+ * time
+ * https://docs.openapiprocessor.io/spring
  */
 
 package generated.api;

src/testInt/resources/tests/params-request-body-multipart-mapping/generated/api/Api.java

@@ -1,6 +1,9 @@
 /*
- * This class is auto generated by https://github.com/hauner/openapi-processor-spring.
- * DO NOT EDIT.
+ * DO NOT MODIFY - this class was auto generated by openapi-processor-spring
+ *
+ * test
+ * time
+ * https://docs.openapiprocessor.io/spring
  */
 
 package generated.api;

src/testInt/resources/tests/params-request-body/generated/api/Api.java

@@ -1,6 +1,9 @@
 /*
- * This class is auto generated by https://github.com/hauner/openapi-processor-spring.
- * DO NOT EDIT.
+ * DO NOT MODIFY - this class was auto generated by openapi-processor-spring
+ *
+ * test
+ * time
+ * https://docs.openapiprocessor.io/spring
  */
 
 package generated.api;

src/testInt/resources/tests/params-request-body/generated/model/Book.java

@@ -1,6 +1,9 @@
 /*
- * This class is auto generated by https://github.com/hauner/openapi-processor-spring.
- * DO NOT EDIT.
+ * DO NOT MODIFY - this class was auto generated by openapi-processor-spring
+ *
+ * test
+ * time
+ * https://docs.openapiprocessor.io/spring
  */
 
 package generated.model;

src/testInt/resources/tests/params-simple-data-types/generated/api/EndpointApi.java

@@ -1,6 +1,9 @@
 /*
- * This class is auto generated by https://github.com/hauner/openapi-processor-spring.
- * DO NOT EDIT.
+ * DO NOT MODIFY - this class was auto generated by openapi-processor-spring
+ *
+ * test
+ * time
+ * https://docs.openapiprocessor.io/spring
  */
 
 package generated.api;