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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2021 Nordix Foundation.
* ================================================================================
* 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.clamp.common.acm.rest;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.nio.charset.StandardCharsets;
import javax.ws.rs.core.Response;
import org.onap.policy.clamp.common.acm.exception.AutomationCompositionRuntimeException;
import org.onap.policy.common.utils.coder.Coder;
import org.onap.policy.common.utils.coder.CoderException;
import org.onap.policy.common.utils.coder.StandardCoder;
import org.onap.policy.common.utils.coder.StandardYamlCoder;
import org.springframework.http.HttpInputMessage;
import org.springframework.http.HttpOutputMessage;
import org.springframework.http.MediaType;
import org.springframework.http.converter.AbstractHttpMessageConverter;
import org.springframework.http.converter.HttpMessageNotReadableException;
import org.springframework.http.converter.HttpMessageNotWritableException;
public class CoderHttpMesageConverter<T> extends AbstractHttpMessageConverter<T> {
private Coder coder;
public CoderHttpMesageConverter(String type) {
super(new MediaType("application", type, StandardCharsets.UTF_8));
this.coder = "json".equals(type) ? new StandardCoder() : new StandardYamlCoder();
}
@Override
protected boolean supports(Class<?> clazz) {
return true;
}
@Override
protected T readInternal(Class<? extends T> clazz, HttpInputMessage inputMessage)
throws IOException, HttpMessageNotReadableException {
try (var is = new InputStreamReader(inputMessage.getBody(), StandardCharsets.UTF_8)) {
return coder.decode(is, clazz);
} catch (CoderException e) {
throw new AutomationCompositionRuntimeException(Response.Status.BAD_REQUEST, e.getMessage(), e);
}
}
@Override
protected void writeInternal(T t, HttpOutputMessage outputMessage)
throws IOException, HttpMessageNotWritableException {
try (var writer = new OutputStreamWriter(outputMessage.getBody(), StandardCharsets.UTF_8)) {
coder.encode(writer, t);
} catch (CoderException e) {
throw new AutomationCompositionRuntimeException(Response.Status.BAD_REQUEST, e.getMessage(), e);
}
}
}
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