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/*
* Copyright (c) 2024. Benik Arakelyan
*
* 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.jsunsoft.http;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.apache.hc.client5.http.ClientProtocolException;
import org.apache.hc.client5.http.ConnectTimeoutException;
import org.apache.hc.client5.http.HttpHostConnectException;
import org.apache.hc.client5.http.config.RequestConfig;
import org.apache.hc.client5.http.impl.classic.CloseableHttpClient;
import org.apache.hc.client5.http.routing.RoutingSupport;
import org.apache.hc.core5.http.*;
import org.apache.hc.core5.http.io.entity.EntityUtils;
import org.apache.hc.core5.http.io.entity.StringEntity;
import org.apache.hc.core5.http.message.HeaderGroup;
import org.apache.hc.core5.http.protocol.HttpContext;
import org.apache.hc.core5.net.URIBuilder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.net.SocketTimeoutException;
import java.net.URI;
import java.net.URISyntaxException;
import java.nio.charset.Charset;
import java.util.Collection;
import static com.jsunsoft.http.BasicConnectionFailureType.*;
import static java.nio.charset.StandardCharsets.UTF_8;
import static org.apache.hc.core5.http.HttpStatus.*;
class BasicWebTarget implements WebTarget {
private static final Logger LOGGER = LoggerFactory.getLogger(BasicWebTarget.class);
private final CloseableHttpClient closeableHttpClient;
private final URIBuilder uriBuilder;
private final HttpUriRequestBuilder httpUriRequestBuilder;
private final ResponseBodyReaderConfig responseBodyReaderConfig;
private final RequestBodySerializeConfig requestBodySerializeConfig;
BasicWebTarget(CloseableHttpClient closeableHttpClient, URI uri, Collection defaultHeaders, Collection defaultRequestParameters, ResponseBodyReaderConfig responseBodyReaderConfig, RequestBodySerializeConfig requestBodySerializeConfig) {
this(closeableHttpClient, new URIBuilder(uri), defaultHeaders, defaultRequestParameters, responseBodyReaderConfig, requestBodySerializeConfig);
}
BasicWebTarget(CloseableHttpClient closeableHttpClient, String uri, Collection defaultHeaders, Collection defaultRequestParameters, ResponseBodyReaderConfig responseBodyReaderConfig, RequestBodySerializeConfig requestBodySerializeConfig) throws URISyntaxException {
this(closeableHttpClient, new URIBuilder(uri), defaultHeaders, defaultRequestParameters, responseBodyReaderConfig, requestBodySerializeConfig);
}
private BasicWebTarget(CloseableHttpClient closeableHttpClient, URIBuilder uriBuilder, Collection defaultHeaders, Collection defaultRequestParameters, ResponseBodyReaderConfig responseBodyReaderConfig, RequestBodySerializeConfig requestBodySerializeConfig) {
this.closeableHttpClient = closeableHttpClient;
this.uriBuilder = uriBuilder;
this.responseBodyReaderConfig = responseBodyReaderConfig;
this.requestBodySerializeConfig = requestBodySerializeConfig;
this.httpUriRequestBuilder = new HttpUriRequestBuilder();
defaultHeaders.forEach(httpUriRequestBuilder::addHeader);
defaultRequestParameters.forEach(httpUriRequestBuilder::addParameter);
}
BasicWebTarget(CloseableHttpClient closeableHttpClient, URIBuilder uriBuilder, HttpUriRequestBuilder httpUriRequestBuilder, ResponseBodyReaderConfig responseBodyReaderConfig, RequestBodySerializeConfig requestBodySerializeConfig) {
this.closeableHttpClient = closeableHttpClient;
this.uriBuilder = uriBuilder;
this.httpUriRequestBuilder = httpUriRequestBuilder;
this.responseBodyReaderConfig = responseBodyReaderConfig;
this.requestBodySerializeConfig = requestBodySerializeConfig;
}
/**
* Copy constructor
*
* @param source source WebTarget instance from which new WebTarget must be initialized
*/
BasicWebTarget(BasicWebTarget source) {
this.closeableHttpClient = source.getCloseableHttpClient();
this.uriBuilder = source.getUriBuilder();
this.responseBodyReaderConfig = source.getResponseBodyReaderConfig();
this.requestBodySerializeConfig = source.getRequestBodySerializeConfig();
this.httpUriRequestBuilder = source.getHttpUriRequestBuilder();
}
@Override
public WebTarget path(String path) {
ArgsCheck.notNull(path, "path");
HttpRequestUtils.appendPath(uriBuilder, path);
return this;
}
@Override
public WebTarget setPath(String path) {
ArgsCheck.notNull(path, "path");
uriBuilder.setPath(path);
return this;
}
@Override
public Response request(HttpMethod method, HttpEntity httpEntity) {
ArgsCheck.notNull(method, "method");
httpUriRequestBuilder.setEntity(httpEntity);
return request(method);
}
@Override
public ResponseHandler request(HttpMethod method, HttpEntity httpEntity, Class responseType) {
httpUriRequestBuilder.setEntity(httpEntity);
return request(method, responseType);
}
@Override
public ResponseHandler request(HttpMethod method, HttpEntity httpEntity, TypeReference responseType) {
ArgsCheck.notNull(method, "method");
ArgsCheck.notNull(responseType, "responseType");
httpUriRequestBuilder.setEntity(httpEntity);
return request(method, responseType);
}
@Override
public ResponseHandler request(HttpMethod method, Class responseType) {
ArgsCheck.notNull(method, "method");
ArgsCheck.notNull(responseType, "responseType");
return request(method, new TypeReference<>(responseType));
}
@Override
public Response request(HttpMethod method, HttpContext context) {
ArgsCheck.notNull(method, "method");
ClassicHttpRequest request = resolveRequest(method);
URI uri = resolveRequestURI(request);
LOGGER.trace("Executing request: {}", httpUriRequestBuilder);
try {
HttpHost httpHost = resolveHttpHost(request);
return new BasicResponse(closeableHttpClient.executeOpen(httpHost, request, context), responseBodyReaderConfig, uri);
} catch (ConnectionRequestTimeoutException e) {
throw new ResponseException(SC_SERVICE_UNAVAILABLE, "Connection pool is empty for request on uri: [" + request.getRequestUri() + "]. Status code: " + SC_SERVICE_UNAVAILABLE, uri, CONNECTION_POOL_IS_EMPTY, e);
} catch (ConnectTimeoutException e) {
throw new ResponseException(SC_SERVICE_UNAVAILABLE, "HttpRequest is unable to establish a connection with the: [" + request.getRequestUri() + "] within the given period of time or Connection pool is empty. Status code: " + SC_SERVICE_UNAVAILABLE, uri, CONNECTION_POOL_IS_EMPTY, e);
} catch (SocketTimeoutException | NoHttpResponseException e) {
//todo support retry when NoHttpResponseException
throw new ResponseException(SC_SERVICE_UNAVAILABLE, "Server on uri: [" + request.getRequestUri() + "] didn't respond with specified time. Status code: " + SC_SERVICE_UNAVAILABLE, uri, REMOTE_SERVER_HIGH_LOADED, e);
} catch (HttpHostConnectException e) {
throw new ResponseException(SC_SERVICE_UNAVAILABLE, "Server on uri: [" + uri + "] is down. Status code: " + SC_SERVICE_UNAVAILABLE, uri, REMOTE_SERVER_IS_DOWN, e);
} catch (ClientProtocolException e) {
throw new RequestException("Error in the HTTP protocol. URI: [" + uri + "]", e);
} catch (IOException e) {
throw new ResponseException(SC_SERVICE_UNAVAILABLE, "Connection was aborted for request on uri: [" + uri + "]. Status code: " + SC_SERVICE_UNAVAILABLE, uri, IO, e);
}
}
private ClassicHttpRequest resolveRequest(HttpMethod method) {
return httpUriRequestBuilder.setMethod(method.name()).setUri(getURI()).build();
}
private HttpHost resolveHttpHost(ClassicHttpRequest request) throws ClientProtocolException {
try {
return RoutingSupport.determineHost(request);
} catch (final HttpException ex) {
throw new ClientProtocolException(ex);
}
}
private URI resolveRequestURI(ClassicHttpRequest request) {
try {
return request.getUri();
} catch (URISyntaxException e) {
throw new IllegalArgumentException("URI syntax is incorrect. URI: [" + getURIString() + "].", e);
}
}
@Override
public ResponseHandler request(HttpMethod method, TypeReference typeReference) {
CustomArgsCheck.checkIsCorrectTypeForDeserialization(typeReference.getRawType());
long startTime = System.currentTimeMillis();
ResponseHandler result;
try (Response response = request(method)) {
int statusCode = response.getCode();
HttpEntity httpEntity = response.getEntity();
LOGGER.info("Response code from uri: [{}] is {}", response.getURI(), statusCode);
boolean hasBody = HttpRequestUtils.hasBody(statusCode);
T content = null;
String failedMessage = null;
if (hasBody && httpEntity == null) {
failedMessage = "Response entity is null";
LOGGER.debug("{} .Uri: [{}]. Status code: {}", failedMessage, response.getURI(), statusCode);
statusCode = SC_BAD_GATEWAY;
} else {
try {
if (!HttpRequestUtils.isVoidType(typeReference.getRawType()) && hasBody && HttpRequestUtils.isSuccess(statusCode)) {
content = response.readEntityChecked(typeReference);
LOGGER.trace("Result of Uri: [{}] is {}", response.getURI(), content);
} else if (HttpRequestUtils.isNonSuccess(statusCode)) {
failedMessage = response.readEntityChecked(String.class);
String logMsg = "Unexpected Response. Url: [" + response.getURI() + "] Status code: " + statusCode + ", Error message: " + failedMessage;
if (statusCode == SC_BAD_REQUEST) {
LOGGER.warn(logMsg);
} else {
LOGGER.debug(logMsg);
}
}
} catch (ResponseBodyReaderException e) {
failedMessage = "Response deserialization failed. Cannot deserialize response to: [" + typeReference + "]." + e;
LOGGER.debug(failedMessage + ". Uri: [" + response.getURI() + "]. Status code: " + statusCode, e);
statusCode = SC_BAD_GATEWAY;
} catch (IOException e) {
failedMessage = "Get content from response failed: " + e;
LOGGER.debug("Stream could not be created. Uri: [" + response.getURI() + "]. Status code: " + statusCode, e);
statusCode = SC_SERVICE_UNAVAILABLE;
}
}
HeaderGroup headerGroup = new HeaderGroup();
headerGroup.setHeaders(response.getHeaders());
ContentType responseContentType = HttpRequestUtils.getContentTypeFromHttpEntity(httpEntity);
EntityUtils.consumeQuietly(httpEntity);
result = new BasicResponseHandler<>(content, statusCode, headerGroup, failedMessage, typeReference.getType(), responseContentType, response.getURI());
} catch (ResponseException e) {
result = new BasicResponseHandler<>(null, e.getStatusCode(), e.getMessage(), typeReference.getType(), null, e.getURI(), e.getConnectionFailureType());
LOGGER.debug("Request failed.", e);
} catch (IOException e) {
LOGGER.warn("Resources close failed.", e);
result = new BasicResponseHandler<>(null, SC_INTERNAL_SERVER_ERROR, "Resources close failed. " + e, typeReference.getType(), null, getURI(), IO);
}
if (LOGGER.isDebugEnabled()) {
LOGGER.debug("Executing of uri: [{}] completed. Time: {}", result.getURI(), HttpRequestUtils.humanTime(startTime));
}
LOGGER.trace("Executed result: {}", result);
return result;
}
@Override
public ResponseHandler rawRequest(HttpMethod method, Object body) {
return rawRequest(method, parsePayloadBody(body));
}
@Override
public URI getURI() {
URI uri;
try {
uri = uriBuilder.build().normalize();
} catch (URISyntaxException e) {
throw new IllegalArgumentException("URI syntax is incorrect. URI: [" + getURIString() + "].", e);
}
return uri;
}
@Override
public String getURIString() {
return uriBuilder.toString();
}
@Override
public WebTarget removeHeader(Header header) {
ArgsCheck.notNull(header, "method");
httpUriRequestBuilder.removeHeader(header);
return this;
}
@Override
public WebTarget removeHeaders(String name) {
ArgsCheck.notNull(name, "name");
httpUriRequestBuilder.removeHeaders(name);
return this;
}
@Override
public WebTarget updateHeader(Header header) {
ArgsCheck.notNull(header, "header");
httpUriRequestBuilder.setHeader(header);
return this;
}
@Override
public WebTarget addHeader(Header header) {
ArgsCheck.notNull(header, "header");
httpUriRequestBuilder.addHeader(header);
return this;
}
@Override
public WebTarget setCharset(Charset charset) {
httpUriRequestBuilder.setCharset(charset);
return this;
}
@Override
public ResponseHandler request(final HttpMethod method, final String payload, Class responseType) {
ArgsCheck.notNull(method, "method");
ArgsCheck.notNull(payload, "payload");
ArgsCheck.notNull(payload, "responseType");
logRequestBody(method, payload);
return request(method, new StringEntity(payload, UTF_8), responseType);
}
@Override
public ResponseHandler request(HttpMethod method, Object body, Class responseType) {
return request(method, parsePayloadBody(body), responseType);
}
@Override
public ResponseHandler request(final HttpMethod method, final String payload, TypeReference responseType) {
ArgsCheck.notNull(method, "method");
ArgsCheck.notNull(payload, "payload");
ArgsCheck.notNull(payload, "responseType");
logRequestBody(method, payload);
return request(method, new StringEntity(payload, UTF_8), responseType);
}
@Override
public ResponseHandler request(HttpMethod method, Object body, TypeReference responseType) {
return request(method, parsePayloadBody(body), responseType);
}
@Override
public Response request(final HttpMethod method, final String payload) {
ArgsCheck.notNull(method, "method");
ArgsCheck.notNull(payload, "payload");
logRequestBody(method, payload);
return request(method, new StringEntity(payload, UTF_8));
}
@Override
public Response request(HttpMethod method, Object body) {
return request(method, parsePayloadBody(body));
}
@Override
public WebTarget setRequestConfig(RequestConfig requestConfig) {
httpUriRequestBuilder.setConfig(requestConfig);
return this;
}
@Override
public WebTarget addParameter(NameValuePair nameValuePair) {
ArgsCheck.notNull(nameValuePair, "nameValuePair");
httpUriRequestBuilder.addParameter(nameValuePair);
return this;
}
CloseableHttpClient getCloseableHttpClient() {
return closeableHttpClient;
}
URIBuilder getUriBuilder() {
return new URIBuilder(getURI());
}
HttpUriRequestBuilder getHttpUriRequestBuilder() {
return httpUriRequestBuilder.copyBuilder();
}
ResponseBodyReaderConfig getResponseBodyReaderConfig() {
return responseBodyReaderConfig;
}
RequestBodySerializeConfig getRequestBodySerializeConfig() {
return requestBodySerializeConfig;
}
private String parsePayloadBody(Object body) {
ArgsCheck.notNull(body, "body");
Header contentTypeHeader = httpUriRequestBuilder.getFirstHeader(HttpHeaders.CONTENT_TYPE);
String mimeType = contentTypeHeader != null ? ContentType.parse(contentTypeHeader.getValue()).getMimeType() : null;
LOGGER.trace("Serializing body based on mime type: [{}] body object: {}", mimeType, body);
ObjectMapper mapper;
if (ContentType.APPLICATION_JSON.getMimeType().equals(mimeType)) {
mapper = requestBodySerializeConfig.getDefaultJsonMapper();
} else if (ContentType.APPLICATION_XML.getMimeType().equals(mimeType)) {
mapper = requestBodySerializeConfig.getDefaultXmlMapper();
} else {
throw new RequestException("Serializer is not found. Now supported only JSON and XML serialization depends on [" + HttpHeaders.CONTENT_TYPE + "]. Founded first content type header is: " + contentTypeHeader);
}
try {
return mapper.writeValueAsString(body);
} catch (JsonProcessingException e) {
throw new RequestException("Serialization of request body failed.", e);
}
}
private void logRequestBody(HttpMethod method, final String payload) {
LOGGER.atDebug()
.addArgument(this::getURIString)
.addArgument(method)
.addArgument(payload)
.log("Requesting to: [{}] with HTTP method: [{}] and body: {}");
}
}