package org.gitlab4j.api.utils;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLEncoder;
import java.util.Arrays;
import java.util.List;
import java.util.StringJoiner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.gitlab4j.api.GitLabApiException;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonValue;
/**
* This class uses HTML scraping to create and revoke GitLab personal access tokens,
* the user's Feed token, and for fetching the current Health Check access token.
*
* <p>NOTE: This relies on HTML scraping and has been tested on GitLab-CE 11.0.0 to 11.10.1 for
* proper functionality. It may not work on earlier or later versions.</p>
*/
public final class AccessTokenUtils {
/**
* This enum defines the available scopes for a personal access token.
*/
public enum Scope {
/**
* Grants complete access to the API and Container Registry (read/write) (introduced in GitLab 8.15).
*/
API,
/**
* Allows to read (pull) container registry images if a project is private and
* authorization is required (introduced in GitLab 9.3). If the GitLab server you
* are using does not have the Registry properly configured, using this scope will
* result in an exception.
*/
READ_REGISTRY,
/**
* Allows read-only access (pull) to the repository through git clone.
*/
READ_REPOSITORY,
/**
* Allows access to the read-only endpoints under /users. Essentially, any of the GET
* requests in the Users API are allowed (introduced in GitLab 8.15).
*/
READ_USER,
/**
* Allows performing API actions as any user in the system,
* if the authenticated user is an admin (introduced in GitLab 10.2).
*/
SUDO,
/**
* Grants read-write access to repositories on private projects using Git-over-HTTP (not using the API).
*/
WRITE_REPOSITORY;
private static JacksonJsonEnumHelper<Scope> enumHelper = new JacksonJsonEnumHelper<>(Scope.class);
@JsonCreator
public static Scope forValue(String value) {
return enumHelper.forValue(value);
}
@JsonValue
public String toValue() {
return (enumHelper.toString(this));
}
@Override
public String toString() {
return (enumHelper.toString(this));
}
}
protected static final String USER_AGENT = "GitLab4J Client";
protected static final String COOKIES_HEADER = "Set-Cookie";
protected static final String NEW_USER_AUTHENTICITY_TOKEN_REGEX = "\"new_user\".*name=\\\"authenticity_token\\\"\\svalue=\\\"([^\\\"]*)\\\".*new_new_user";
protected static final Pattern NEW_USER_AUTHENTICITY_TOKEN_PATTERN = Pattern.compile(NEW_USER_AUTHENTICITY_TOKEN_REGEX);
protected static final String AUTHENTICITY_TOKEN_REGEX = "name=\\\"authenticity_token\\\"\\svalue=\\\"([^\\\"]*)\\\"";
protected static final Pattern AUTHENTICITY_TOKEN_PATTERN = Pattern.compile(AUTHENTICITY_TOKEN_REGEX);
protected static final String PERSONAL_ACCESS_TOKEN_REGEX = "name=\\\"created-personal-access-token\\\".*data-clipboard-text=\\\"([^\\\"]*)\\\".*\\/>";
protected static final Pattern PERSONAL_ACCESS_TOKEN_PATTERN = Pattern.compile(PERSONAL_ACCESS_TOKEN_REGEX);
protected static final String REVOKE_PERSONAL_ACCESS_TOKEN_REGEX = "href=\\\"([^\\\"]*)\\\"";
protected static final Pattern REVOKE_PERSONAL_ACCESS_TOKEN_PATTERN = Pattern.compile(REVOKE_PERSONAL_ACCESS_TOKEN_REGEX);
protected static final String FEED_TOKEN_REGEX = "name=\\\"feed_token\\\".*value=\\\"([^\\\"]*)\\\".*\\/>";
protected static final Pattern FEED_TOKEN_PATTERN = Pattern.compile(FEED_TOKEN_REGEX);
protected static final String HEALTH_CHECK_ACCESS_TOKEN_REGEX = "id=\"health-check-token\">([^<]*)<\\/code>";
protected static final Pattern HEALTH_CHECK_ACCESS_TOKEN_PATTERN = Pattern.compile(HEALTH_CHECK_ACCESS_TOKEN_REGEX);
/**
* Create a GitLab personal access token with the provided configuration.
*
* @param baseUrl the GitLab server base URL
* @param username the user name to create the personal access token for
* @param password the password of the user to create the personal access token for
* @param tokenName the name for the new personal access token
* @param scopes an array of scopes for the new personal access token
* @return the created personal access token
* @throws GitLabApiException if any exception occurs
*/
public static final String createPersonalAccessToken(final String baseUrl, final String username,
final String password, final String tokenName, final Scope[] scopes) throws GitLabApiException {
if (scopes == null || scopes.length == 0) {
throw new RuntimeException("scopes cannot be null or empty");
}
return (createPersonalAccessToken(baseUrl, username, password, tokenName, Arrays.asList(scopes)));
}
/**
* Create a GitLab personal access token with the provided configuration.
*
* @param baseUrl the GitLab server base URL
* @param username the user name to create the personal access token for
* @param password the password of the user to create the personal access token for
* @param tokenName the name for the new personal access token
* @param scopes a List of scopes for the new personal access token
* @return the created personal access token
* @throws GitLabApiException if any exception occurs
*/
public static final String createPersonalAccessToken(final String baseUrl, final String username,
final String password, final String tokenName, final List<Scope> scopes) throws GitLabApiException {
// Save the follow redirect state so it can be restored later
boolean savedFollowRedirects = HttpURLConnection.getFollowRedirects();
String cookies = null;
try {
// Must manually follow redirects
if (savedFollowRedirects) {
HttpURLConnection.setFollowRedirects(false);
}
/*******************************************************************************
* Step 1: Login and get the session cookie. *
*******************************************************************************/
cookies = login(baseUrl, username, password);
/*******************************************************************************
* Step 2: Go to the /profile/personal_access_tokens page to fetch a *
* new authenticity token. *
*******************************************************************************/
String urlString = baseUrl + "/profile/personal_access_tokens";
URL url = new URL(urlString);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestProperty("User-Agent", USER_AGENT);
connection.setRequestProperty("Cookie", cookies);
connection.setReadTimeout(10000);
connection.setConnectTimeout(10000);
// Make sure the response code is 200, otherwise there is a failure
int responseCode = connection.getResponseCode();
if (responseCode != 200) {
throw new GitLabApiException("Failure loading Access Tokens page, aborting!");
}
String content = getContent(connection);
Matcher matcher = AUTHENTICITY_TOKEN_PATTERN.matcher(content);
if (!matcher.find()) {
throw new GitLabApiException("authenticity_token not found, aborting!");
}
String csrfToken = matcher.group(1);
/*******************************************************************************
* Step 3: Submit the /profile/personalccess_tokens page with the info to *
* create a new personal access token. *
*******************************************************************************/
connection = (HttpURLConnection) url.openConnection();
connection.setRequestProperty("User-Agent", USER_AGENT);
connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
connection.setRequestProperty("Charset", "utf-8");
connection.setRequestProperty("Cookie", cookies);
connection.setReadTimeout(10000);
connection.setConnectTimeout(10000);
connection.setRequestMethod("POST");
connection.setDoInput(true);
connection.setDoOutput(true);
StringBuilder formData = new StringBuilder();
addFormData(formData, "authenticity_token", csrfToken);
addFormData(formData, "personal_access_token[name]", tokenName);
addFormData(formData, "personal_access_token[expires_at]", "");
if (scopes != null && scopes.size() > 0) {
for (Scope scope : scopes) {
addFormData(formData, "personal_access_token[scopes][]", scope.toString());
}
}
connection.setRequestProperty("Content-Length", String.valueOf(formData.length()));
OutputStream output = connection.getOutputStream();
output.write(formData.toString().getBytes());
output.flush();
output.close();
// Make sure a redirect was provided, otherwise there is a failure
responseCode = connection.getResponseCode();
if (responseCode != 302) {
throw new GitLabApiException("Failure creating personal access token, aborting!");
}
// Follow the redirect with the provided session cookie
String redirectUrl = connection.getHeaderField("Location");
url = new URL(redirectUrl);
connection = (HttpURLConnection) url.openConnection();
connection.setRequestProperty("User-Agent", USER_AGENT);
connection.setRequestProperty("Cookie", cookies);
connection.setReadTimeout(10000);
connection.setConnectTimeout(10000);
// Make sure the response code is 200, otherwise there is a failure
responseCode = connection.getResponseCode();
if (responseCode != 200) {
throw new GitLabApiException("Failure creating personal access token, aborting!");
}
// Extract the personal access token from the page and return it
content = getContent(connection);
matcher = PERSONAL_ACCESS_TOKEN_PATTERN.matcher(content);
if (!matcher.find()) {
throw new GitLabApiException("created-personal-access-token not found, aborting!");
}
String personalAccessToken = matcher.group(1);
return (personalAccessToken);
} catch (IOException ioe) {
throw new GitLabApiException(ioe);
} finally {
if (cookies != null) {
try { logout(baseUrl, cookies); } catch (Exception ignore) {}
}
if (savedFollowRedirects) {
HttpURLConnection.setFollowRedirects(true);
}
}
}
/**
* Revoke the first matching GitLab personal access token.
*
* @param baseUrl the GitLab server base URL
* @param username the user name to revoke the personal access token for
* @param password the password of the user to revoke the personal access token for
* @param tokenName the name of the personal access token to revoke
* @param scopes an array of scopes of the personal access token to revoke
* @throws GitLabApiException if any exception occurs
*/
public static final void revokePersonalAccessToken(final String baseUrl, final String username,
final String password, final String tokenName, final Scope[] scopes) throws GitLabApiException {
if (scopes == null || scopes.length == 0) {
throw new RuntimeException("scopes cannot be null or empty");
}
revokePersonalAccessToken(baseUrl, username, password, tokenName, Arrays.asList(scopes));
}
/**
* Revoke the first matching GitLab personal access token.
*
* @param baseUrl the GitLab server base URL
* @param username the user name to revoke the personal access token for
* @param password the password of the user to revoke the personal access token for
* @param tokenName the name of the personal access token to revoke
* @param scopes a List of scopes of the personal access token to revoke
* @throws GitLabApiException if any exception occurs
*/
public static final void revokePersonalAccessToken(final String baseUrl, final String username,
final String password, final String tokenName, final List<Scope> scopes) throws GitLabApiException {
// Save the follow redirect state so it can be restored later
boolean savedFollowRedirects = HttpURLConnection.getFollowRedirects();
String cookies = null;
try {
// Must manually follow redirects
if (savedFollowRedirects) {
HttpURLConnection.setFollowRedirects(false);
}
/*******************************************************************************
* Step 1: Login and get the session cookie. *
*******************************************************************************/
cookies = login(baseUrl, username, password);
/*******************************************************************************
* Step 2: Go to the /profile/personal_access_tokens page and fetch the *
* authenticity token. *
*******************************************************************************/
String urlString = baseUrl + "/profile/personal_access_tokens";
URL url = new URL(urlString);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestProperty("User-Agent", USER_AGENT);
connection.setRequestProperty("Cookie", cookies);
connection.setReadTimeout(10000);
connection.setConnectTimeout(10000);
// Make sure the response code is 200, otherwise there is a failure
int responseCode = connection.getResponseCode();
if (responseCode != 200) {
throw new GitLabApiException("Failure loading Access Tokens page, aborting!");
}
String content = getContent(connection);
Matcher matcher = AUTHENTICITY_TOKEN_PATTERN.matcher(content);
if (!matcher.find()) {
throw new GitLabApiException("authenticity_token not found, aborting!");
}
String csrfToken = matcher.group(1);
/*******************************************************************************
* Step 3: Submit the /profile/personal_access_tokens page with the info to *
* revoke the first matching personal access token. *
*******************************************************************************/
int indexOfTokenName = content.indexOf("<td>" + tokenName + "</td>");
if (indexOfTokenName == -1) {
throw new GitLabApiException("personal access token not found, aborting!");
}
content = content.substring(indexOfTokenName);
int indexOfLinkEnd = content.indexOf("</a>");
if (indexOfTokenName == -1) {
throw new GitLabApiException("personal access token not found, aborting!");
}
content = content.substring(0, indexOfLinkEnd);
String scopesText = "";
if (scopes != null && scopes.size() > 0) {
final StringJoiner joiner = new StringJoiner(", ");
scopes.forEach(s -> joiner.add(s.toString()));
scopesText = joiner.toString();
}
if (content.indexOf(scopesText) == -1) {
throw new GitLabApiException("personal access token not found, aborting!");
}
matcher = REVOKE_PERSONAL_ACCESS_TOKEN_PATTERN.matcher(content);
if (!matcher.find()) {
throw new GitLabApiException("personal access token not found, aborting!");
}
String revokePath = matcher.group(1);
url = new URL(baseUrl + revokePath);
connection = (HttpURLConnection) url.openConnection();
connection.setRequestProperty("User-Agent", USER_AGENT);
connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
connection.setRequestProperty("Charset", "utf-8");
connection.setRequestProperty("Cookie", cookies);
connection.setReadTimeout(10000);
connection.setConnectTimeout(10000);
connection.setRequestMethod("PUT");
connection.setDoInput(true);
connection.setDoOutput(true);
// Submit the form
StringBuilder formData = new StringBuilder();
addFormData(formData, "authenticity_token", csrfToken);
connection.setRequestProperty("Content-Length", String.valueOf(formData.length()));
OutputStream output = connection.getOutputStream();
output.write(formData.toString().getBytes());
output.flush();
output.close();
// Make sure a redirect was provided, otherwise there is a failure
responseCode = connection.getResponseCode();
if (responseCode != 302) {
throw new GitLabApiException("Failure revoking personal access token, aborting!");
}
// Follow the redirect with the provided session cookie
String redirectUrl = connection.getHeaderField("Location");
url = new URL(redirectUrl);
connection = (HttpURLConnection) url.openConnection();
connection.setRequestProperty("User-Agent", USER_AGENT);
connection.setRequestProperty("Cookie", cookies);
connection.setReadTimeout(10000);
connection.setConnectTimeout(10000);
// Make sure the response code is 200, otherwise there is a failure
responseCode = connection.getResponseCode();
if (responseCode != 200) {
throw new GitLabApiException("Failure revoking personal access token, aborting!");
}
} catch (IOException ioe) {
throw new GitLabApiException(ioe);
} finally {
if (cookies != null) {
try { logout(baseUrl, cookies); } catch (Exception ignore) {}
}
if (savedFollowRedirects) {
HttpURLConnection.setFollowRedirects(true);
}
}
}
/**
* Fetches the user's GitLab Feed token using HTML scraping.
*
* @param baseUrl the GitLab server base URL
* @param username the user name the user to log in with
* @param password the password of the provided username
* @return the fetched Feed token
* @throws GitLabApiException if any exception occurs
*/
public static final String getFeedToken(final String baseUrl, final String username,
final String password) throws GitLabApiException {
// Save the follow redirect state so it can be restored later
boolean savedFollowRedirects = HttpURLConnection.getFollowRedirects();
String cookies = null;
try {
// Must manually follow redirects
if (savedFollowRedirects) {
HttpURLConnection.setFollowRedirects(false);
}
/*******************************************************************************
* Step 1: Login and get the session cookie. *
*******************************************************************************/
cookies = login(baseUrl, username, password);
/*******************************************************************************
* Step 2: Go to the /profile/personal_access_tokens page and fetch the *
* Feed token. *
*******************************************************************************/
String urlString = baseUrl + "/profile/personal_access_tokens";
URL url = new URL(urlString);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestProperty("User-Agent", USER_AGENT);
connection.setRequestProperty("Cookie", cookies);
connection.setReadTimeout(10000);
connection.setConnectTimeout(10000);
// Make sure the response code is 200, otherwise there is a failure
int responseCode = connection.getResponseCode();
if (responseCode != 200) {
throw new GitLabApiException("Failure loading Access Tokens page, aborting!");
}
// Extract the Feed token from the page and return it
String content = getContent(connection);
Matcher matcher = FEED_TOKEN_PATTERN.matcher(content);
if (!matcher.find()) {
throw new GitLabApiException("Feed token not found, aborting!");
}
String feedToken = matcher.group(1);
return (feedToken);
} catch (IOException ioe) {
throw new GitLabApiException(ioe);
} finally {
if (cookies != null) {
try { logout(baseUrl, cookies); } catch (Exception ignore) {}
}
if (savedFollowRedirects) {
HttpURLConnection.setFollowRedirects(true);
}
}
}
/**
* Fetches the GitLab health check access token using HTML scraping.
*
* @param baseUrl the GitLab server base URL
* @param username the user name of an admin user to log in with
* @param password the password of the provided username
* @return the fetched health check access token
* @throws GitLabApiException if any exception occurs
*/
public static final String getHealthCheckAccessToken(final String baseUrl, final String username,
final String password) throws GitLabApiException {
// Save the follow redirect state so it can be restored later
boolean savedFollowRedirects = HttpURLConnection.getFollowRedirects();
String cookies = null;
try {
// Must manually follow redirects
if (savedFollowRedirects) {
HttpURLConnection.setFollowRedirects(false);
}
/*******************************************************************************
* Step 1: Login and get the session cookie. *
*******************************************************************************/
cookies = login(baseUrl, username, password);
/*******************************************************************************
* Step 2: Go to the /admin/health_check page and fetch the * health check
* access token. *
*******************************************************************************/
String urlString = baseUrl + "/admin/health_check";
URL url = new URL(urlString);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestProperty("User-Agent", USER_AGENT);
connection.setRequestProperty("Cookie", cookies);
connection.setReadTimeout(10000);
connection.setConnectTimeout(10000);
// Make sure the response code is 200, otherwise there is a failure
int responseCode = connection.getResponseCode();
if (responseCode != 200) {
throw new GitLabApiException("Failure loading Health Check page, aborting!");
}
// Extract the personal access token from the page and return it
String content = getContent(connection);
Matcher matcher = HEALTH_CHECK_ACCESS_TOKEN_PATTERN.matcher(content);
if (!matcher.find()) {
throw new GitLabApiException("health-check-access-token not found, aborting!");
}
String healthCheckAccessToken = matcher.group(1);
return (healthCheckAccessToken);
} catch (IOException ioe) {
throw new GitLabApiException(ioe);
} finally {
if (cookies != null) {
try { logout(baseUrl, cookies); } catch (Exception ignore) {}
}
if (savedFollowRedirects) {
HttpURLConnection.setFollowRedirects(true);
}
}
}
/**
* Gets a GitLab session cookie by logging in the specified user.
*
* @param baseUrl the GitLab server base URL
* @param username the user name to to login for
* @param password the password of the user to login for
* @return the GitLab seesion token as a cookie value
* @throws GitLabApiException if any error occurs
*/
protected static final String login(final String baseUrl, final String username,
final String password) throws GitLabApiException {
// Save the follow redirect state so it can be restored later
boolean savedFollowRedirects = HttpURLConnection.getFollowRedirects();
try {
// Must manually follow redirects
if (savedFollowRedirects) {
HttpURLConnection.setFollowRedirects(false);
}
/*******************************************************************************
* Step 1: Go to the login page to get a session cookie and an athuicity_token *
*******************************************************************************/
String urlString = baseUrl + "/users/sign_in";
URL url = new URL(urlString);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("GET");
connection.addRequestProperty("User-Agent", USER_AGENT);
connection.setReadTimeout(10000);
connection.setConnectTimeout(10000);
// Make sure a redirect was provided, otherwise it is a login failure
int responseCode = connection.getResponseCode();
if (responseCode != 200) {
throw new GitLabApiException("Invalid state, aborting!");
}
// Get the session cookie from the headers
String[] cookieParts = connection.getHeaderField(COOKIES_HEADER).split(";");
String cookies = cookieParts[0];
// Extract the authenticity token from the content, need this to submit the
// login form
String content = getContent(connection);
Matcher matcher = NEW_USER_AUTHENTICITY_TOKEN_PATTERN.matcher(content);
if (!matcher.find()) {
throw new GitLabApiException("authenticity_token not found, aborting!");
}
String csrfToken = matcher.group(1);
/*******************************************************************************
* Step 2: Submit the login form wih the session cookie and authenticity_token *
* fetching a new session cookie along the way. *
*******************************************************************************/
connection = (HttpURLConnection) url.openConnection();
connection.setRequestProperty("User-Agent", USER_AGENT);
connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
connection.setRequestProperty("Charset", "utf-8");
connection.setRequestProperty("Cookie", cookies);
connection.setReadTimeout(10000);
connection.setConnectTimeout(10000);
connection.setRequestMethod("POST");
connection.setDoInput(true);
connection.setDoOutput(true);
StringBuilder formData = new StringBuilder();
addFormData(formData, "user[login]", username);
addFormData(formData, "user[password]", password);
addFormData(formData, "authenticity_token", csrfToken);
connection.setRequestProperty("Content-Length", String.valueOf(formData.length()));
OutputStream output = connection.getOutputStream();
output.write(formData.toString().getBytes());
output.flush();
output.close();
// Make sure a redirect was provided, otherwise it is a login failure
responseCode = connection.getResponseCode();
if (responseCode != 302) {
throw new GitLabApiException("Login failure, aborting!", 401);
}
cookieParts = connection.getHeaderField(COOKIES_HEADER).split(";");
cookies = cookieParts[0];
// Follow the redirect with the provided session cookie
String redirectUrl = connection.getHeaderField("Location");
url = new URL(redirectUrl);
connection = (HttpURLConnection) url.openConnection();
connection.setRequestProperty("User-Agent", USER_AGENT);
connection.setRequestProperty("Cookie", cookies);
connection.setReadTimeout(10000);
connection.setConnectTimeout(10000);
// The response code should be 200, otherwise something is wrong, consider it a login failure
responseCode = connection.getResponseCode();
if (responseCode != 200) {
throw new GitLabApiException("Login failure, aborting!", 401);
}
return (cookies);
} catch (IOException ioe) {
throw new GitLabApiException(ioe);
} finally {
if (savedFollowRedirects) {
HttpURLConnection.setFollowRedirects(true);
}
}
}
/**
* Logs out the user associated with the GitLab session cookie.
*
* @param baseUrl the GitLab server base URL
* @param cookies the GitLab session cookie to logout
* @throws GitLabApiException if any error occurs
*/
protected static final void logout(final String baseUrl, final String cookies) throws GitLabApiException {
// Save so it can be restored later
boolean savedFollowRedirects = HttpURLConnection.getFollowRedirects();
try {
// Must manually follow redirects
if (savedFollowRedirects) {
HttpURLConnection.setFollowRedirects(false);
}
String urlString = baseUrl + "/users/sign_out";
URL url = new URL(urlString);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestProperty("User-Agent", USER_AGENT);
connection.setRequestProperty("Cookie", cookies);
connection.setRequestMethod("GET");
connection.setReadTimeout(10000);
connection.setConnectTimeout(10000);
// Make sure a redirect was provided, otherwise it is a logout failure
int responseCode = connection.getResponseCode();
if (responseCode != 302) {
throw new GitLabApiException("Logout failure, aborting!");
}
} catch (IOException ioe) {
throw new GitLabApiException(ioe);
} finally {
if (savedFollowRedirects) {
HttpURLConnection.setFollowRedirects(true);
}
}
}
/**
* Adds the specified form param to the form data StringBuilder. If the provided formData is null,
* will create the StringBuilder instance first.
*
* @param formData the StringBuilder instance holding the form data, if null will create the StringBuilder
* @param name the form param name
* @param value the form param value
* @return the form data StringBuilder
* @throws GitLabApiException if any error occurs.
*/
public static final StringBuilder addFormData(StringBuilder formData, String name, String value) throws GitLabApiException {
if (formData == null) {
formData = new StringBuilder();
} else if (formData.length() > 0) {
formData.append("&");
}
formData.append(name);
formData.append("=");
try {
formData.append(URLEncoder.encode(value, "UTF-8"));
return (formData);
} catch (Exception e) {
throw new GitLabApiException(e);
}
}
/**
* Reads and returns the content from the provided URLConnection.
*
* @param connection the URLConnection to read the content from
* @return the read content as a String
* @throws GitLabApiException if any error occurs
*/
protected static String getContent(URLConnection connection) throws GitLabApiException {
StringBuilder buf = new StringBuilder();
try (BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()))) {
reader.lines().forEach(b -> buf.append(b));
} catch (IOException ioe) {
throw new GitLabApiException(ioe);
}
return (buf.toString());
}
}
