Adds a way to configure whether the DSL source is retained via a work…

…space property named `structurizr.dsl.source` - `true` (default) or `false`.

changelog.md

@@ -9,6 +9,7 @@
 - structurizr-dsl: Adds `supportingTypes implementation-suffix <suffix>`.
 - structurizr-dsl: Fixes https://github.com/structurizr/java/issues/346 (`// comment \` joins lines).
 - structurizr-dsl: Anonymous identifiers for relationships (i.e. relationships not assigned to an identifier) are excluded from the model, and therefore also excluded from the serialised JSON.
+- structurizr-dsl: Adds a way to configure whether the DSL source is retained via a workspace property named `structurizr.dsl.source` - `true` (default) or `false`.
 
 ## 3.0.0 (19th September 2024)
 

structurizr-dsl/src/main/java/com/structurizr/dsl/DslUtils.java

@@ -11,7 +11,8 @@
  */
 public class DslUtils {
 
-    private static final String STRUCTURIZR_DSL_PROPERTY_NAME = "structurizr.dsl";
+    static final String STRUCTURIZR_DSL_PROPERTY_NAME = "structurizr.dsl";
+    static final String STRUCTURIZR_DSL_RETAIN_SOURCE_PROPERTY_NAME = "structurizr.dsl.source";
 
     /**
      * Gets the DSL associated with a workspace.
@@ -21,13 +22,11 @@ public class DslUtils {
      */
     public static String getDsl(Workspace workspace) {
         String base64 = workspace.getProperties().get(STRUCTURIZR_DSL_PROPERTY_NAME);
-        String dsl = "";
-
         if (!StringUtils.isNullOrEmpty(base64)) {
-            dsl = new String(Base64.getDecoder().decode(base64));
+            return new String(Base64.getDecoder().decode(base64));
         }
 
-        return dsl;
+        return "";
     }
 
     /**
@@ -37,12 +36,10 @@ public static String getDsl(Workspace workspace) {
      * @param dsl   the DSL string
      */
     public static void setDsl(Workspace workspace, String dsl) {
-        String base64 = "";
         if (!StringUtils.isNullOrEmpty(dsl)) {
-            base64 = Base64.getEncoder().encodeToString(dsl.getBytes(StandardCharsets.UTF_8));
+            String base64 = Base64.getEncoder().encodeToString(dsl.getBytes(StandardCharsets.UTF_8));
+            workspace.addProperty(STRUCTURIZR_DSL_PROPERTY_NAME, base64);
         }
-
-        workspace.addProperty(STRUCTURIZR_DSL_PROPERTY_NAME, base64);
     }
 
 }

structurizr-dsl/src/main/java/com/structurizr/dsl/StructurizrDslParser.java

@@ -101,7 +101,10 @@ public void setRestricted(boolean restricted) {
      */
     public Workspace getWorkspace() {
         if (workspace != null) {
-            DslUtils.setDsl(workspace, getParsedDsl());
+            String value = workspace.getProperties().get(DslUtils.STRUCTURIZR_DSL_RETAIN_SOURCE_PROPERTY_NAME);
+            if (value == null || value.equalsIgnoreCase("true")) {
+                DslUtils.setDsl(workspace, getParsedDsl());
+            }
         }
 
         return workspace;

structurizr-dsl/src/test/java/com/structurizr/dsl/DslTests.java

@@ -1377,4 +1377,42 @@ void test_ImageView_WhenParserIsInRestrictedMode() {
         }
     }
 
+    @Test
+    void test_sourceIsRetained() throws Exception {
+        File parentDslFile = new File("src/test/resources/dsl/source-parent.dsl");
+        StructurizrDslParser parser = new StructurizrDslParser();
+        parser.parse(parentDslFile);
+        Workspace workspace = parser.getWorkspace();
+        assertEquals("""
+workspace {
+
+    model {
+        a = softwareSystem "A"
+    }
+
+}""", DslUtils.getDsl(workspace));
+
+        File childDslFile = new File("src/test/resources/dsl/source-child.dsl");
+        parser = new StructurizrDslParser();
+        parser.parse(childDslFile);
+        workspace = parser.getWorkspace();
+        assertEquals("""
+workspace extends source-parent.dsl {
+
+    model {
+        b = softwareSystem "B"
+    }
+
+}""", DslUtils.getDsl(workspace));
+    }
+
+    @Test
+    void test_sourceIsNotRetained() throws Exception {
+        File parentDslFile = new File("src/test/resources/dsl/source-not-retained.dsl");
+        StructurizrDslParser parser = new StructurizrDslParser();
+        parser.parse(parentDslFile);
+        Workspace workspace = parser.getWorkspace();
+        assertNull(workspace.getProperties().get(DslUtils.STRUCTURIZR_DSL_PROPERTY_NAME));
+    }
+
 }

structurizr-dsl/src/test/resources/dsl/source-child.dsl

@@ -0,0 +1,7 @@
+workspace extends source-parent.dsl {
+
+    model {
+        b = softwareSystem "B"
+    }
+
+}

structurizr-dsl/src/test/resources/dsl/source-not-retained.dsl

@@ -0,0 +1,11 @@
+workspace {
+
+    properties {
+        structurizr.dsl.source false
+    }
+
+    model {
+        a = softwareSystem "A"
+    }
+
+}

structurizr-dsl/src/test/resources/dsl/source-parent.dsl

@@ -0,0 +1,7 @@
+workspace {
+
+    model {
+        a = softwareSystem "A"
+    }
+
+}