Use classes from policy/common

Use YamlHttpMessageConverter provided by policy/common.
Fix few sonar issues.

Issue-ID: POLICY-3931
Change-Id: I3c093df059f4ff70e3f99669c2bdea7d84cefcc6
Signed-off-by: Ram Krishna Verma <ram_krishna.verma@bell.ca>

3 files changed, 9 insertions, 114 deletions

diff --git a/main/pom.xml b/main/pom.xml
index c89eafd1..fffaa03f 100644
--- a/main/pom.xml
+++ b/main/pom.xml
@@ -42,6 +42,11 @@
             <version>${policy.models.version}</version>
         </dependency>
         <dependency>
+            <groupId>org.onap.policy.common</groupId>
+            <artifactId>spring-utils</artifactId>
+            <version>${policy.common.version}</version>
+        </dependency>
+        <dependency>
             <groupId>com.h2database</groupId>
             <artifactId>h2</artifactId>
         </dependency>
diff --git a/main/src/main/java/org/onap/policy/api/main/config/WebConfig.java b/main/src/main/java/org/onap/policy/api/main/config/WebConfig.java
index a50dd187..88871f55 100644
--- a/main/src/main/java/org/onap/policy/api/main/config/WebConfig.java
+++ b/main/src/main/java/org/onap/policy/api/main/config/WebConfig.java
@@ -20,14 +20,13 @@
 
 package org.onap.policy.api.main.config;
 
-import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
 import com.google.gson.JsonParser;
 import com.google.gson.JsonSerializer;
 import java.util.Arrays;
 import java.util.List;
 import org.onap.policy.api.main.config.converter.StringToEnumConverter;
-import org.onap.policy.api.main.config.converter.YamlHttpMessageConverter;
+import org.onap.policy.common.spring.utils.YamlHttpMessageConverter;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.format.FormatterRegistry;
 import org.springframework.http.MediaType;
@@ -48,12 +47,12 @@ public class WebConfig implements WebMvcConfigurer {
 
     @Override
     public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
-        YamlHttpMessageConverter yamlConverter = new YamlHttpMessageConverter();
+        var yamlConverter = new YamlHttpMessageConverter();
         yamlConverter.setSupportedMediaTypes(Arrays.asList(MediaType.parseMediaType("application/yaml")));
         converters.add(yamlConverter);
 
         GsonHttpMessageConverter converter = buildGsonConverter();
-        converters.removeIf(c -> c instanceof GsonHttpMessageConverter);
+        converters.removeIf(GsonHttpMessageConverter.class::isInstance);
         converters.add(0, converter);
     }
 
@@ -66,7 +65,7 @@ public class WebConfig implements WebMvcConfigurer {
     private GsonHttpMessageConverter buildGsonConverter() {
         JsonSerializer<Json> serializer = (json, type, jsonSerializationContext) ->
             JsonParser.parseString(json.value());
-        Gson gson = new GsonBuilder().registerTypeAdapter(Json.class, serializer).create();
+        var gson = new GsonBuilder().registerTypeAdapter(Json.class, serializer).create();
         return new GsonHttpMessageConverter(gson);
     }
 }
\ No newline at end of file
diff --git a/main/src/main/java/org/onap/policy/api/main/config/converter/YamlHttpMessageConverter.java b/main/src/main/java/org/onap/policy/api/main/config/converter/YamlHttpMessageConverter.java
deleted file mode 100644
index 9fe9b031..00000000
--- a/main/src/main/java/org/onap/policy/api/main/config/converter/YamlHttpMessageConverter.java
+++ /dev/null
@@ -1,109 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- *  Copyright (C) 2022 Bell Canada. All rights reserved.
- * ================================================================================
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * SPDX-License-Identifier: Apache-2.0
- * ============LICENSE_END=========================================================
- */
-
-package org.onap.policy.api.main.config.converter;
-
-import java.io.IOException;
-import java.io.InputStreamReader;
-import java.io.OutputStreamWriter;
-import java.io.Reader;
-import java.io.Writer;
-import java.lang.reflect.Type;
-import java.nio.charset.Charset;
-import java.nio.charset.StandardCharsets;
-import org.onap.policy.common.utils.coder.YamlJsonTranslator;
-import org.springframework.core.GenericTypeResolver;
-import org.springframework.http.HttpHeaders;
-import org.springframework.http.HttpInputMessage;
-import org.springframework.http.HttpOutputMessage;
-import org.springframework.http.MediaType;
-import org.springframework.http.converter.AbstractGenericHttpMessageConverter;
-import org.springframework.http.converter.HttpMessageNotReadableException;
-import org.springframework.http.converter.HttpMessageNotWritableException;
-import org.springframework.lang.Nullable;
-
-/**
- * Custom converter to marshal/unmarshall data structured with YAML media type.
- */
-public class YamlHttpMessageConverter extends AbstractGenericHttpMessageConverter<Object> {
-
-    public static final Charset DEFAULT_CHARSET = StandardCharsets.UTF_8;
-
-    private static final YamlJsonTranslator TRANSLATOR = new YamlJsonTranslator();
-
-    public YamlHttpMessageConverter() {
-        super(new MediaType("application", "yaml"));
-        setDefaultCharset(DEFAULT_CHARSET);
-    }
-
-    @Override
-    public final Object read(Type type, @Nullable Class<?> contextClass, HttpInputMessage inputMessage)
-        throws IOException {
-        return readResolved(GenericTypeResolver.resolveType(type, contextClass), inputMessage);
-    }
-
-    @Override
-    protected final Object readInternal(Class<?> clazz, HttpInputMessage inputMessage) throws IOException {
-        return readResolved(clazz, inputMessage);
-    }
-
-    private Object readInternal(Type resolvedType, Reader reader) {
-        Class<?> clazz = (Class<?>) resolvedType;
-        return TRANSLATOR.fromYaml(reader, clazz);
-    }
-
-    @Override
-    protected final void writeInternal(Object object, @Nullable Type type, HttpOutputMessage outputMessage)
-        throws IOException {
-        Writer writer = getWriter(outputMessage);
-        try {
-            writeInternal(object, type, writer);
-        } catch (Exception ex) {
-            throw new HttpMessageNotWritableException("Could not write YAML: " + ex.getMessage(), ex);
-        }
-        writer.flush();
-    }
-
-    private void writeInternal(Object object, @Nullable Type type, Writer writer) {
-        TRANSLATOR.toYaml(writer, object);
-    }
-
-    private Object readResolved(Type resolvedType, HttpInputMessage inputMessage) throws IOException {
-        Reader reader = getReader(inputMessage);
-        try {
-            return readInternal(resolvedType, reader);
-        } catch (Exception ex) {
-            throw new HttpMessageNotReadableException("Could not read YAML: " + ex.getMessage(), ex, inputMessage);
-        }
-    }
-
-    private static Reader getReader(HttpInputMessage inputMessage) throws IOException {
-        return new InputStreamReader(inputMessage.getBody(), getCharset(inputMessage.getHeaders()));
-    }
-
-    private static Writer getWriter(HttpOutputMessage outputMessage) throws IOException {
-        return new OutputStreamWriter(outputMessage.getBody(), getCharset(outputMessage.getHeaders()));
-    }
-
-    private static Charset getCharset(HttpHeaders headers) {
-        Charset charset = (headers.getContentType() == null ? null : headers.getContentType().getCharset());
-        return (charset != null ? charset : DEFAULT_CHARSET);
-    }
-}
\ No newline at end of file