Load large yaml files (#1039)

planetiler-core/src/main/java/com/onthegomap/planetiler/util/YAML.java

@@ -19,7 +19,7 @@ public class YAML {
 
   private YAML() {}
 
-  private static final Load snakeYaml = new Load(LoadSettings.builder().build());
+  private static final Load snakeYaml = new Load(LoadSettings.builder().setCodePointLimit(Integer.MAX_VALUE).build());
   public static final ObjectMapper jackson = new ObjectMapper();
 
   public static <T> T load(Path file, Class<T> clazz) {

planetiler-core/src/test/java/com/onthegomap/planetiler/util/YamlTest.java

@@ -0,0 +1,48 @@
+package com.onthegomap.planetiler.util;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import org.junit.jupiter.api.Test;
+
+class YamlTest {
+  @Test
+  void testLoadYamlRaw() {
+    assertEquals(Map.of("a", 1), YAML.load("""
+      a: 1
+      """, Object.class));
+  }
+
+  @Test
+  void testLoadYamlToClass() {
+    record Result(int a) {}
+    assertEquals(new Result(1), YAML.load("""
+      a: 1
+      """, Result.class));
+  }
+
+  @Test
+  void testLoadLargeYamlList() {
+    StringBuilder builder = new StringBuilder();
+    List<Integer> expected = new ArrayList<>();
+    for (int i = 0; i < 500_000; i++) {
+      builder.append("\n- ").append(i);
+      expected.add(i);
+    }
+    assertEquals(expected, YAML.load(builder.toString(), List.class));
+  }
+
+  @Test
+  void testLoadLargeYamlMap() {
+    StringBuilder builder = new StringBuilder();
+    Map<String, Integer> expected = new HashMap<>();
+    for (int i = 0; i < 500_000; i++) {
+      builder.append('\n').append(i).append(": ").append(i);
+      expected.put(Integer.toString(i), i);
+    }
+    assertEquals(expected, YAML.load(builder.toString(), Map.class));
+  }
+}