Add support for deprecation level

This commit ensures that deprecation level set in manual metadata is
properly merged in the generated one.

Closes gh-9449

spring-boot-tools/spring-boot-configuration-processor/src/main/java/org/springframework/boot/configurationprocessor/metadata/ConfigurationMetadata.java

@@ -124,6 +124,9 @@ public class ConfigurationMetadata {
 					if (deprecation.getReplacement() != null) {
 						matchingDeprecation.setReplacement(deprecation.getReplacement());
 					}
+					if (deprecation.getLevel() != null) {
+						matchingDeprecation.setLevel(deprecation.getLevel());
+					}
 				}
 			}
 		}

spring-boot-tools/spring-boot-configuration-processor/src/main/java/org/springframework/boot/configurationprocessor/metadata/ItemDeprecation.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2015 the original author or authors.
+ * Copyright 2012-2017 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -28,12 +28,20 @@ public class ItemDeprecation {
 
 	private String replacement;
 
+	private String level;
+
 	public ItemDeprecation() {
+		this(null, null);
 	}
 
 	public ItemDeprecation(String reason, String replacement) {
+		this(reason, replacement, null);
+	}
+
+	public ItemDeprecation(String reason, String replacement, String level) {
 		this.reason = reason;
 		this.replacement = replacement;
+		this.level = level;
 	}
 
 	public String getReason() {
@@ -52,10 +60,19 @@ public class ItemDeprecation {
 		this.replacement = replacement;
 	}
 
+	public String getLevel() {
+		return this.level;
+	}
+
+	public void setLevel(String level) {
+		this.level = level;
+	}
+
 	@Override
 	public String toString() {
 		return "ItemDeprecation{" + "reason='" + this.reason + '\'' + ", "
-				+ "replacement='" + this.replacement + '\'' + '}';
+				+ "replacement='" + this.replacement + '\'' + ", "
+				+ "level='" + this.level + '\'' + '}';
 	}
 
 	@Override
@@ -68,13 +85,15 @@ public class ItemDeprecation {
 		}
 		ItemDeprecation other = (ItemDeprecation) o;
 		return nullSafeEquals(this.reason, other.reason)
-				&& nullSafeEquals(this.replacement, other.replacement);
+				&& nullSafeEquals(this.replacement, other.replacement)
+				&& nullSafeEquals(this.level, other.level);
 	}
 
 	@Override
 	public int hashCode() {
 		int result = nullSafeHashCode(this.reason);
 		result = 31 * result + nullSafeHashCode(this.replacement);
+		result = 31 * result + nullSafeHashCode(this.level);
 		return result;
 	}
 

spring-boot-tools/spring-boot-configuration-processor/src/main/java/org/springframework/boot/configurationprocessor/metadata/JsonConverter.java

@@ -67,6 +67,9 @@ class JsonConverter {
 		if (deprecation != null) {
 			jsonObject.put("deprecated", true); // backward compatibility
 			JSONObject deprecationJsonObject = new JSONObject();
+			if (deprecation.getLevel() != null) {
+				deprecationJsonObject.put("level", deprecation.getLevel());
+			}
 			if (deprecation.getReason() != null) {
 				deprecationJsonObject.put("reason", deprecation.getReason());
 			}

spring-boot-tools/spring-boot-configuration-processor/src/main/java/org/springframework/boot/configurationprocessor/metadata/JsonMarshaller.java

@@ -108,6 +108,7 @@ public class JsonMarshaller {
 		if (object.has("deprecation")) {
 			JSONObject deprecationJsonObject = object.getJSONObject("deprecation");
 			ItemDeprecation deprecation = new ItemDeprecation();
+			deprecation.setLevel(deprecationJsonObject.optString("level", null));
 			deprecation.setReason(deprecationJsonObject.optString("reason", null));
 			deprecation
 					.setReplacement(deprecationJsonObject.optString("replacement", null));