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/*
* SonarQube
* Copyright (C) 2009-2025 SonarSource SA
* mailto:info AT sonarsource DOT com
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This program 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.sonar.auth;
import com.github.scribejava.core.model.OAuth2AccessToken;
import com.github.scribejava.core.model.OAuthRequest;
import com.github.scribejava.core.model.Response;
import com.github.scribejava.core.model.Verb;
import com.github.scribejava.core.oauth.OAuth20Service;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.concurrent.ExecutionException;
import java.util.function.Function;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import static java.lang.String.format;
public class OAuthRestClient {
private static final int DEFAULT_PAGE_SIZE = 100;
private static final Pattern NEXT_LINK_PATTERN = Pattern.compile("<([^<]+)>; rel=\"next\"");
private OAuthRestClient() {
// Only static method
}
public static Response executeRequest(String requestUrl, OAuth20Service scribe, OAuth2AccessToken accessToken) throws IOException {
OAuthRequest request = new OAuthRequest(Verb.GET, requestUrl);
scribe.signRequest(accessToken, request);
try {
Response response = scribe.execute(request);
if (!response.isSuccessful()) {
throw unexpectedResponseCode(requestUrl, response);
}
return response;
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
throw new IllegalStateException(e);
} catch (ExecutionException e) {
throw new IllegalStateException(e);
}
}
public static <E> List<E> executePaginatedRequest(String request, OAuth20Service scribe, OAuth2AccessToken accessToken, Function<String, List<E>> function) {
List<E> result = new ArrayList<>();
readPage(result, scribe, accessToken, addPerPageQueryParameter(request, DEFAULT_PAGE_SIZE), function);
return result;
}
public static String addPerPageQueryParameter(String request, int pageSize) {
String separator = request.contains("?") ? "&" : "?";
return request + separator + "per_page=" + pageSize;
}
private static <E> void readPage(List<E> result, OAuth20Service scribe, OAuth2AccessToken accessToken, String endPoint, Function<String, List<E>> function) {
try (Response nextResponse = executeRequest(endPoint, scribe, accessToken)) {
String content = nextResponse.getBody();
if (content == null) {
return;
}
result.addAll(function.apply(content));
readNextEndPoint(nextResponse).ifPresent(newNextEndPoint -> readPage(result, scribe, accessToken, newNextEndPoint, function));
} catch (IOException e) {
throw new IllegalStateException(format("Failed to get %s", endPoint), e);
}
}
private static Optional<String> readNextEndPoint(Response response) {
String link = response.getHeaders().entrySet().stream()
.filter(e -> "Link".equalsIgnoreCase(e.getKey()))
.map(Map.Entry::getValue)
.findAny().orElse("");
Matcher nextLinkMatcher = NEXT_LINK_PATTERN.matcher(link);
if (!nextLinkMatcher.find()) {
return Optional.empty();
}
return Optional.of(nextLinkMatcher.group(1));
}
private static IllegalStateException unexpectedResponseCode(String requestUrl, Response response) throws IOException {
return new IllegalStateException(format("Fail to execute request '%s'. HTTP code: %s, response: %s", requestUrl, response.getCode(), response.getBody()));
}
}
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