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- /*
- * SonarQube
- * Copyright (C) 2009-2021 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.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, request + "?per_page=" + DEFAULT_PAGE_SIZE, function);
- return result;
- }
-
- 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.getHeader("Link");
- if (link == null || link.isEmpty() || !link.contains("rel=\"next\"")) {
- return Optional.empty();
- }
- 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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