[7.0.x] Introduce configuration parameter to control the generation of the evolution SQL files (backport #433) by @vadimvera

build.sbt

@@ -23,6 +23,7 @@ val previousVersion: Option[String] = Some("7.0.0")
 lazy val mimaSettings = Seq(
   mimaPreviousArtifacts := previousVersion.map(organization.value %% moduleName.value % _).toSet,
   mimaBinaryIssueFilters ++= Seq(
+    ProblemFilters.exclude[ReversedMissingMethodProblem]("play.db.ebean.EbeanConfig.generateEvolutionsScripts"),
   )
 )
 

play-ebean/src/main/java/play/db/ebean/DefaultEbeanConfig.java

@@ -26,11 +26,22 @@
 public class DefaultEbeanConfig implements EbeanConfig {
 
   private final String defaultServer;
+
   private final Map<String, DatabaseConfig> serverConfigs;
 
-  public DefaultEbeanConfig(String defaultServer, Map<String, DatabaseConfig> serverConfigs) {
+  private final boolean generateEvolutionsScripts;
+
+  public DefaultEbeanConfig(
+      String defaultServer,
+      Map<String, DatabaseConfig> serverConfigs,
+      boolean generateEvolutionsScripts) {
     this.defaultServer = defaultServer;
     this.serverConfigs = serverConfigs;
+    this.generateEvolutionsScripts = generateEvolutionsScripts;
+  }
+
+  public DefaultEbeanConfig(String defaultServer, Map<String, DatabaseConfig> serverConfigs) {
+    this(defaultServer, serverConfigs, true);
   }
 
   @Override
@@ -43,11 +54,18 @@ public Map<String, DatabaseConfig> serverConfigs() {
     return serverConfigs;
   }
 
+  @Override
+  public boolean generateEvolutionsScripts() {
+    return generateEvolutionsScripts;
+  }
+
   @Singleton
   public static class EbeanConfigParser implements Provider<EbeanConfig> {
 
     private final Config config;
+
     private final Environment environment;
+
     private final DBApi dbApi;
 
     private static final Logger.ALogger LOGGER = Logger.of(DefaultEbeanConfig.class);
@@ -100,7 +118,10 @@ public EbeanConfig parse() {
         serverConfigs.put(key, serverConfig);
       }
 
-      return new DefaultEbeanConfig(ebeanConfig.getDefaultDatasource(), serverConfigs);
+      return new DefaultEbeanConfig(
+          ebeanConfig.getDefaultDatasource(),
+          serverConfigs,
+          ebeanConfig.generateEvolutionsScripts());
     }
 
     private void setServerConfigDataSource(String key, DatabaseConfig serverConfig) {

play-ebean/src/main/java/play/db/ebean/EbeanConfig.java

@@ -12,4 +12,6 @@ public interface EbeanConfig {
   String defaultServer();
 
   Map<String, DatabaseConfig> serverConfigs();
+
+  boolean generateEvolutionsScripts();
 }

play-ebean/src/main/java/play/db/ebean/EbeanDynamicEvolutions.java

@@ -64,6 +64,9 @@ public void create() {
     if (environment.isProd()) {
       return;
     }
+    if (!config.generateEvolutionsScripts()) {
+      return;
+    }
     config
         .serverConfigs()
         .forEach(

play-ebean/src/main/java/play/db/ebean/EbeanParsedConfig.java

@@ -18,11 +18,22 @@
 public class EbeanParsedConfig {
 
   private final String defaultDatasource;
+
   private final Map<String, List<String>> datasourceModels;
 
-  public EbeanParsedConfig(String defaultDatasource, Map<String, List<String>> datasourceModels) {
+  private final boolean generateEvolutionsScripts;
+
+  public EbeanParsedConfig(
+      String defaultDatasource,
+      Map<String, List<String>> datasourceModels,
+      boolean generateEvolutionsScripts) {
     this.defaultDatasource = defaultDatasource;
     this.datasourceModels = datasourceModels;
+    this.generateEvolutionsScripts = generateEvolutionsScripts;
+  }
+
+  public EbeanParsedConfig(String defaultDatasource, Map<String, List<String>> datasourceModels) {
+    this(defaultDatasource, datasourceModels, true);
   }
 
   public String getDefaultDatasource() {
@@ -33,6 +44,10 @@ public Map<String, List<String>> getDatasourceModels() {
     return datasourceModels;
   }
 
+  public boolean generateEvolutionsScripts() {
+    return generateEvolutionsScripts;
+  }
+
   /**
    * Parse a play configuration.
    *
@@ -44,6 +59,7 @@ public static EbeanParsedConfig parseFromConfig(Config config) {
     Config playEbeanConfig = config.getConfig("play.ebean");
     String defaultDatasource = playEbeanConfig.getString("defaultDatasource");
     String ebeanConfigKey = playEbeanConfig.getString("config");
+    boolean generateEvolutionsScripts = playEbeanConfig.getBoolean("generateEvolutionsScripts");
 
     Map<String, List<String>> datasourceModels = new HashMap<>();
 
@@ -64,6 +80,6 @@ public static EbeanParsedConfig parseFromConfig(Config config) {
                 datasourceModels.put(key, models);
               });
     }
-    return new EbeanParsedConfig(defaultDatasource, datasourceModels);
+    return new EbeanParsedConfig(defaultDatasource, datasourceModels, generateEvolutionsScripts);
   }
 }

play-ebean/src/main/resources/reference.conf

@@ -9,5 +9,8 @@ play {
 
     # The name of the default ebean datasource
     defaultDatasource = "default"
+
+    # The key to control the generation of the Evolutions scripts
+    generateEvolutionsScripts = true
   }
 }

play-ebean/src/test/java/play/db/ebean/EbeanParsedConfigTest.java

@@ -26,6 +26,7 @@ public void defaultConfig() {
     EbeanParsedConfig config = parse(Collections.emptyMap());
     assertThat(config.getDefaultDatasource(), equalTo("default"));
     assertThat(config.getDatasourceModels().size(), equalTo(0));
+    assertThat(config.generateEvolutionsScripts(), equalTo(Boolean.TRUE));
   }
 
   @Test
@@ -52,6 +53,13 @@ public void customDefault() {
     assertThat(config.getDefaultDatasource(), equalTo("custom"));
   }
 
+  @Test
+  public void disableGenerateEvolutionsScripts() {
+    EbeanParsedConfig config =
+        parse(ImmutableMap.of("play.ebean.generateEvolutionsScripts", false));
+    assertThat(config.generateEvolutionsScripts(), equalTo(Boolean.FALSE));
+  }
+
   @Test
   public void customConfig() {
     EbeanParsedConfig config =