org.smallmind.web.jersey.proxy.JsonTarget Maven / Gradle / Ivy
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/*
* Copyright (c) 2007 through 2024 David Berkman
*
* This file is part of the SmallMind Code Project.
*
* The SmallMind Code Project is free software, you can redistribute
* it and/or modify it under either, at your discretion...
*
* 1) The terms of GNU Affero General Public License as published by the
* Free Software Foundation, either version 3 of the License, or (at
* your option) any later version.
*
* ...or...
*
* 2) The terms of the Apache License, Version 2.0.
*
* The SmallMind Code Project is distributed in the hope that it will
* be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License or Apache License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* and the Apache License along with the SmallMind Code Project. If not, see
* .
*
* Additional permission under the GNU Affero GPL version 3 section 7
* ------------------------------------------------------------------
* If you modify this Program, or any covered work, by linking or
* combining it with other code, such other code is not for that reason
* alone subject to any of the requirements of the GNU Affero GPL
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*/
package org.smallmind.web.jersey.proxy;
import java.net.URISyntaxException;
import jakarta.ws.rs.WebApplicationException;
import org.apache.hc.client5.http.async.methods.SimpleBody;
import org.apache.hc.client5.http.async.methods.SimpleHttpRequest;
import org.apache.hc.client5.http.async.methods.SimpleHttpResponse;
import org.apache.hc.core5.http.Header;
import org.apache.hc.core5.http.HttpHost;
import org.apache.hc.core5.http.Method;
import org.smallmind.nutsnbolts.http.HttpMethod;
import org.smallmind.nutsnbolts.lang.UnknownSwitchCaseException;
import org.smallmind.nutsnbolts.util.Pair;
import org.smallmind.nutsnbolts.util.Tuple;
import org.smallmind.scribe.pen.Level;
import org.smallmind.scribe.pen.LoggerManager;
import org.smallmind.web.http.HttpClient;
import org.smallmind.web.http.SimpleCallback;
import org.smallmind.web.json.scaffold.util.JsonCodec;
public class JsonTarget {
private final HttpHost httpHost;
private Tuple headers;
private Tuple queryParameters;
private Level level = Level.OFF;
private String path;
public JsonTarget (String host)
throws URISyntaxException {
httpHost = HttpHost.create(host);
}
private JsonTarget (HttpHost httpHost, String path) {
this.httpHost = httpHost;
this.path = path;
}
public JsonTarget path (String path)
throws URISyntaxException {
return new JsonTarget(httpHost, path);
}
public JsonTarget header (String key, String value) {
if (headers == null) {
headers = new Tuple<>();
}
headers.addPair(key, value);
return this;
}
public JsonTarget query (String key, String value) {
if (queryParameters == null) {
queryParameters = new Tuple<>();
}
queryParameters.addPair(key, value);
return this;
}
public JsonTarget debug (Level level) {
this.level = level;
return this;
}
public T get (Class responseClass)
throws Exception {
SimpleHttpRequest httpRequest = createHttpRequest(HttpMethod.GET, null);
SimpleCallback callback;
LoggerManager.getLogger(JsonTarget.class).log(level, new RequestDebugCollector(httpRequest));
HttpClient.execute(httpRequest, callback = new SimpleCallback(), 10);
return convertEntity(callback.getResponse(), responseClass);
}
public T put (JsonBody jsonBody, Class responseClass)
throws Exception {
SimpleHttpRequest httpRequest = createHttpRequest(HttpMethod.PUT, jsonBody);
SimpleCallback callback;
LoggerManager.getLogger(JsonTarget.class).log(level, new RequestDebugCollector(httpRequest));
HttpClient.execute(httpRequest, callback = new SimpleCallback(), 10);
return convertEntity(callback.getResponse(), responseClass);
}
public T post (JsonBody jsonBody, Class responseClass)
throws Exception {
SimpleHttpRequest httpRequest = createHttpRequest(HttpMethod.POST, jsonBody);
SimpleCallback callback;
LoggerManager.getLogger(JsonTarget.class).log(level, new RequestDebugCollector(httpRequest));
HttpClient.execute(httpRequest, callback = new SimpleCallback(), 10);
return convertEntity(callback.getResponse(), responseClass);
}
public T patch (JsonBody jsonBody, Class responseClass)
throws Exception {
SimpleHttpRequest httpRequest = createHttpRequest(HttpMethod.PATCH, jsonBody);
SimpleCallback callback;
LoggerManager.getLogger(JsonTarget.class).log(level, new RequestDebugCollector(httpRequest));
HttpClient.execute(httpRequest, callback = new SimpleCallback(), 10);
return convertEntity(callback.getResponse(), responseClass);
}
public T delete (Class responseClass)
throws Exception {
SimpleHttpRequest httpRequest = createHttpRequest(HttpMethod.DELETE, null);
SimpleCallback callback;
LoggerManager.getLogger(JsonTarget.class).log(level, new RequestDebugCollector(httpRequest));
HttpClient.execute(httpRequest, callback = new SimpleCallback(), 10);
return convertEntity(callback.getResponse(), responseClass);
}
private T convertEntity (SimpleHttpResponse response, Class responseClass) {
SimpleBody body;
byte[] bodyContent;
if (((body = response.getBody()) == null) || ((bodyContent = body.getBodyBytes()) == null) || (bodyContent.length == 0)) {
if ((response.getCode() >= 200) && (response.getCode() < 300)) {
return null;
}
throw new WebApplicationException(response.getReasonPhrase(), response.getCode());
}
LoggerManager.getLogger(JsonTarget.class).log(level, new ResponseDebugCollector(response));
return JsonCodec.convert(bodyContent, responseClass);
}
private SimpleHttpRequest createHttpRequest (HttpMethod httpMethod, JsonBody jsonBody) {
SimpleHttpRequest httpRequest;
if (queryParameters != null) {
StringBuilder queryBuilder = new StringBuilder("?");
boolean first = true;
for (Pair queryPair : queryParameters) {
if (!first) {
queryBuilder.append('&');
}
queryBuilder.append(queryPair.getFirst()).append('=').append(queryPair.getSecond());
first = false;
}
path = path + queryBuilder;
}
switch (httpMethod) {
case GET:
httpRequest = SimpleHttpRequest.create(Method.GET, httpHost, path);
break;
case PUT:
httpRequest = SimpleHttpRequest.create(Method.PUT, httpHost, path);
break;
case POST:
httpRequest = SimpleHttpRequest.create(Method.POST, httpHost, path);
break;
case PATCH:
httpRequest = SimpleHttpRequest.create(Method.PATCH, httpHost, path);
break;
case DELETE:
httpRequest = SimpleHttpRequest.create(Method.DELETE, httpHost, path);
break;
default:
throw new UnknownSwitchCaseException(httpMethod.name());
}
if (headers != null) {
for (Pair headerPair : headers) {
httpRequest.addHeader(headerPair.getFirst(), headerPair.getSecond());
}
}
if (jsonBody != null) {
httpRequest.setBody(jsonBody.getBodyAsBytes(), jsonBody.getContentType());
}
return httpRequest;
}
private static class ResponseDebugCollector {
private final SimpleHttpResponse response;
private ResponseDebugCollector (SimpleHttpResponse response) {
this.response = response;
}
@Override
public String toString () {
StringBuilder debugBuilder = new StringBuilder();
debugBuilder.append("Receiving client response\n");
debugBuilder.append("< ").append(response.getCode()).append('\n');
for (Header header : response.getHeaders()) {
debugBuilder.append("< ").append(header.getName()).append(": ").append(header.getValue()).append('\n');
}
debugBuilder.append(response.getBodyText()).append('\n');
return debugBuilder.toString();
}
}
private static class RequestDebugCollector {
private final SimpleHttpRequest httpRequest;
private RequestDebugCollector (SimpleHttpRequest httpRequest) {
this.httpRequest = httpRequest;
}
@Override
public String toString () {
StringBuilder debugBuilder = new StringBuilder();
debugBuilder.append("Sending client request\n");
debugBuilder.append("< ").append(httpRequest.getRequestUri()).append('\n');
for (Header header : httpRequest.getHeaders()) {
debugBuilder.append("< ").append(header.getName()).append(": ").append(header.getValue()).append('\n');
}
if (httpRequest.getBody() != null) {
debugBuilder.append(httpRequest.getBody().getBodyText()).append('\n');
}
return debugBuilder.toString();
}
}
}