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/*
 * Copyright (C) 2015-2024 Philip Helger
 * philip[at]helger[dot]com
 *
 * 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.
 */
package com.helger.smpclient.httpclient;

import java.io.IOException;
import java.nio.charset.StandardCharsets;

import javax.annotation.Nonnull;
import javax.annotation.Nullable;

import org.apache.hc.client5.http.ClientProtocolException;
import org.apache.hc.client5.http.HttpResponseException;
import org.apache.hc.core5.http.ClassicHttpResponse;
import org.apache.hc.core5.http.HttpEntity;
import org.apache.hc.core5.http.io.HttpClientResponseHandler;

import com.helger.commons.debug.GlobalDebug;
import com.helger.httpclient.HttpClientHelper;
import com.helger.smpclient.exception.SMPClientBadResponseException;

/**
 * Abstract {@link HttpClientResponseHandler} implementation that ensures a leak
 * free usage of the returned response.
 * 

* Note: this class is also licensed under Apache 2 license, as it was not part * of the original implementation *

* * @author Philip Helger * @param * Date type to be created */ public abstract class AbstractSMPResponseHandler implements HttpClientResponseHandler { /** * Handle the response entity and transform it into the actual response * object. * * @param aEntity * The entity to handle. Never null. * @return the result. May be null. * @throws IOException * on IO error * @throws SMPClientBadResponseException * if something goes wrong */ @Nullable public abstract T handleEntity (@Nonnull HttpEntity aEntity) throws IOException, SMPClientBadResponseException; /** * Read the entity from the response body and pass it to the entity handler * method if the response was successful (a 2xx status code). If no response * body exists, this returns null. If the response was unsuccessful (>= 300 * status code), throws an {@link HttpResponseException}. */ @Nullable public T handleResponse (@Nonnull final ClassicHttpResponse aResponse) throws IOException { final HttpEntity aEntity = aResponse.getEntity (); if (aResponse.getCode () >= 300) { if (GlobalDebug.isDebugMode ()) { // Contain response details in exception final String sEntity = HttpClientHelper.entityToString (aEntity, StandardCharsets.UTF_8); throw new HttpResponseException (aResponse.getCode (), aResponse.getReasonPhrase () + "\n" + sEntity); } throw new HttpResponseException (aResponse.getCode (), aResponse.getReasonPhrase ()); } try { return aEntity == null ? null : handleEntity (aEntity); } catch (final SMPClientBadResponseException ex) { // Wrap to comply to API :( throw new ClientProtocolException (ex); } } }




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