IDL Smithy build plugin

smithy-build/src/main/java/software/amazon/smithy/build/plugins/IDLPlugin.java

@@ -0,0 +1,46 @@
+/*
+ * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+package software.amazon.smithy.build.plugins;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.Map;
+import software.amazon.smithy.build.PluginContext;
+import software.amazon.smithy.build.SmithyBuildPlugin;
+import software.amazon.smithy.model.shapes.SmithyIdlModelSerializer;
+
+public class IDLPlugin implements SmithyBuildPlugin {
+    private static final String NAME = "idl";
+
+    @Override
+    public String getName() {
+        return NAME;
+    }
+
+    @Override
+    public void execute(PluginContext context) {
+        boolean includePrelude = context.getSettings().getBooleanMemberOrDefault("includePreludeShapes");
+        SmithyIdlModelSerializer.Builder builder = SmithyIdlModelSerializer.builder()
+                .basePath(context.getFileManifest().getBaseDir());
+        if (includePrelude) {
+            builder.serializePrelude();
+        }
+        Map<Path, String> serialized = builder.build().serialize(context.getModel());
+        try {
+            Files.createDirectories(context.getFileManifest().getBaseDir());
+            for (Map.Entry<Path, String> entry : serialized.entrySet()) {
+                context.getFileManifest().writeFile(entry.getKey(), entry.getValue());
+            }
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    @Override
+    public boolean requiresValidModel() {
+        return false;
+    }
+}

smithy-build/src/main/resources/META-INF/services/software.amazon.smithy.build.SmithyBuildPlugin

@@ -3,3 +3,4 @@ software.amazon.smithy.build.plugins.ModelPlugin
 software.amazon.smithy.build.plugins.SourcesPlugin
 software.amazon.smithy.build.plugins.NullabilityReportPlugin
 software.amazon.smithy.build.plugins.RunPlugin
+software.amazon.smithy.build.plugins.IDLPlugin