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GitLab4J-API (gitlab4j-api) provides a full featured Java client library for working with GitLab repositories and servers via the GitLab REST API.
package org.gitlab4j.api;
import java.io.File;
import java.net.URL;
import java.net.URLEncoder;
import javax.ws.rs.NotAuthorizedException;
import javax.ws.rs.core.Form;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.StreamingOutput;
import org.gitlab4j.api.GitLabApi.ApiVersion;
import org.gitlab4j.api.models.Group;
import org.gitlab4j.api.models.Project;
import org.gitlab4j.api.models.User;
/**
* This class is the base class for all the sub API classes. It provides implementations of
* delete(), get(), post() and put() that are re-used by all the sub-classes.
*/
public abstract class AbstractApi implements Constants {
private final GitLabApi gitLabApi;
public AbstractApi(GitLabApi gitLabApi) {
this.gitLabApi = gitLabApi;
}
/**
* Returns the project ID or path from the provided Integer, String, or Project instance.
*
* @param obj the object to determine the ID or path from
* @return the project ID or path from the provided Integer, String, or Project instance
* @throws GitLabApiException if any exception occurs during execution
*/
public Object getProjectIdOrPath(Object obj) throws GitLabApiException {
if (obj == null) {
throw (new RuntimeException("Cannot determine ID or path from null object"));
} else if (obj instanceof Integer) {
return (obj);
} else if (obj instanceof String) {
return (urlEncode(((String) obj).trim()));
} else if (obj instanceof Project) {
Integer id = ((Project) obj).getId();
if (id != null && id.intValue() > 0) {
return (id);
}
String path = ((Project) obj).getPathWithNamespace();
if (path != null && path.trim().length() > 0) {
return (urlEncode(path.trim()));
}
throw (new RuntimeException("Cannot determine ID or path from provided Project instance"));
} else {
throw (new RuntimeException("Cannot determine ID or path from provided " + obj.getClass().getSimpleName() +
" instance, must be Integer, String, or a Project instance"));
}
}
/**
* Returns the group ID or path from the provided Integer, String, or Group instance.
*
* @param obj the object to determine the ID or path from
* @return the group ID or path from the provided Integer, String, or Group instance
* @throws GitLabApiException if any exception occurs during execution
*/
public Object getGroupIdOrPath(Object obj) throws GitLabApiException {
if (obj == null) {
throw (new RuntimeException("Cannot determine ID or path from null object"));
} else if (obj instanceof Integer) {
return (obj);
} else if (obj instanceof String) {
return (urlEncode(((String) obj).trim()));
} else if (obj instanceof Group) {
Integer id = ((Group) obj).getId();
if (id != null && id.intValue() > 0) {
return (id);
}
String path = ((Group) obj).getFullPath();
if (path != null && path.trim().length() > 0) {
return (urlEncode(path.trim()));
}
throw (new RuntimeException("Cannot determine ID or path from provided Group instance"));
} else {
throw (new RuntimeException("Cannot determine ID or path from provided " + obj.getClass().getSimpleName() +
" instance, must be Integer, String, or a Group instance"));
}
}
/**
* Returns the user ID or path from the provided Integer, String, or User instance.
*
* @param obj the object to determine the ID or username from
* @return the user ID or username from the provided Integer, String, or User instance
* @throws GitLabApiException if any exception occurs during execution
*/
public Object getUserIdOrUsername(Object obj) throws GitLabApiException {
if (obj == null) {
throw (new RuntimeException("Cannot determine ID or username from null object"));
} else if (obj instanceof Integer) {
return (obj);
} else if (obj instanceof String) {
return (urlEncode(((String) obj).trim()));
} else if (obj instanceof User) {
Integer id = ((User) obj).getId();
if (id != null && id.intValue() > 0) {
return (id);
}
String username = ((User) obj).getUsername();
if (username != null && username.trim().length() > 0) {
return (urlEncode(username.trim()));
}
throw (new RuntimeException("Cannot determine ID or username from provided User instance"));
} else {
throw (new RuntimeException("Cannot determine ID or username from provided " + obj.getClass().getSimpleName() +
" instance, must be Integer, String, or a User instance"));
}
}
protected ApiVersion getApiVersion() {
return (gitLabApi.getApiVersion());
}
protected boolean isApiVersion(ApiVersion apiVersion) {
return (gitLabApi.getApiVersion() == apiVersion);
}
protected int getDefaultPerPage() {
return (gitLabApi.getDefaultPerPage());
}
protected GitLabApiClient getApiClient() {
return (gitLabApi.getApiClient());
}
/**
* Encode a string to be used as in-path argument for a gitlab api request.
*
* Standard URL encoding changes spaces to plus signs, but for arguments that are part of the path,
* like the :file_path in a "Get raw file" request, gitlab expects spaces to be encoded with %20.
*
* @param s the string to encode
* @return encoded version of s with spaces encoded as %2F
* @throws GitLabApiException if encoding throws an exception
*/
protected String urlEncode(String s) throws GitLabApiException {
try {
String encoded = URLEncoder.encode(s, "UTF-8");
// Since the encode method encodes plus signs as %2B,
// we can simply replace the encoded spaces with the correct encoding here
encoded = encoded.replace("+", "%20");
encoded = encoded.replace(".", "%2E");
encoded = encoded.replace("-", "%2D");
encoded = encoded.replace("_", "%5F");
return (encoded);
} catch (Exception e) {
throw new GitLabApiException(e);
}
}
/**
* Perform an HTTP GET call with the specified query parameters and path objects, returning
* a ClientResponse instance with the data returned from the endpoint.
*
* @param expectedStatus the HTTP status that should be returned from the server
* @param queryParams multivalue map of request parameters
* @param pathArgs variable list of arguments used to build the URI
* @return a ClientResponse instance with the data returned from the endpoint
* @throws GitLabApiException if any exception occurs during execution
*/
protected Response get(Response.Status expectedStatus, MultivaluedMap queryParams, Object... pathArgs) throws GitLabApiException {
try {
return validate(getApiClient().get(queryParams, pathArgs), expectedStatus);
} catch (Exception e) {
throw handle(e);
}
}
/**
* Perform an HTTP GET call with the specified query parameters and path objects, returning
* a ClientResponse instance with the data returned from the endpoint.
*
* @param expectedStatus the HTTP status that should be returned from the server
* @param queryParams multivalue map of request parameters
* @param accepts if non-empty will set the Accepts header to this value
* @param pathArgs variable list of arguments used to build the URI
* @return a ClientResponse instance with the data returned from the endpoint
* @throws GitLabApiException if any exception occurs during execution
*/
protected Response getWithAccepts(Response.Status expectedStatus, MultivaluedMap queryParams, String accepts, Object... pathArgs) throws GitLabApiException {
try {
return validate(getApiClient().getWithAccepts(queryParams, accepts, pathArgs), expectedStatus);
} catch (Exception e) {
throw handle(e);
}
}
/**
* Perform an HTTP GET call with the specified query parameters and URL, returning
* a ClientResponse instance with the data returned from the endpoint.
*
* @param expectedStatus the HTTP status that should be returned from the server
* @param queryParams multivalue map of request parameters
* @param url the fully formed path to the GitLab API endpoint
* @return a ClientResponse instance with the data returned from the endpoint
* @throws GitLabApiException if any exception occurs during execution
*/
protected Response get(Response.Status expectedStatus, MultivaluedMap queryParams, URL url) throws GitLabApiException {
try {
return validate(getApiClient().get(queryParams, url), expectedStatus);
} catch (Exception e) {
throw handle(e);
}
}
/**
* Perform an HTTP HEAD call with the specified query parameters and path objects, returning
* a ClientResponse instance with the data returned from the endpoint.
*
* @param expectedStatus the HTTP status that should be returned from the server
* @param queryParams multivalue map of request parameters
* @param pathArgs variable list of arguments used to build the URI
* @return a ClientResponse instance with the data returned from the endpoint
* @throws GitLabApiException if any exception occurs during execution
*/
protected Response head(Response.Status expectedStatus, MultivaluedMap queryParams, Object... pathArgs) throws GitLabApiException {
try {
return validate(getApiClient().head(queryParams, pathArgs), expectedStatus);
} catch (Exception e) {
throw handle(e);
}
}
/**
* Perform an HTTP POST call with the specified form data and path objects, returning
* a ClientResponse instance with the data returned from the endpoint.
*
* @param expectedStatus the HTTP status that should be returned from the server
* @param formData the Form containing the name/value pairs for the POST data
* @param pathArgs variable list of arguments used to build the URI
* @return a ClientResponse instance with the data returned from the endpoint
* @throws GitLabApiException if any exception occurs during execution
*/
protected Response post(Response.Status expectedStatus, Form formData, Object... pathArgs) throws GitLabApiException {
try {
return validate(getApiClient().post(formData, pathArgs), expectedStatus);
} catch (Exception e) {
throw handle(e);
}
}
/**
* Perform an HTTP POST call with the specified payload object and path objects, returning
* a ClientResponse instance with the data returned from the endpoint.
*
* @param expectedStatus the HTTP status that should be returned from the server
* @param payload the object instance that will be serialized to JSON and used as the POST data
* @param pathArgs variable list of arguments used to build the URI
* @return a ClientResponse instance with the data returned from the endpoint
* @throws GitLabApiException if any exception occurs during execution
*/
protected Response post(Response.Status expectedStatus, Object payload, Object... pathArgs) throws GitLabApiException {
try {
return validate(getApiClient().post(payload, pathArgs), expectedStatus);
} catch (Exception e) {
throw handle(e);
}
}
/**
* Perform an HTTP POST call with the specified payload object and path objects, returning
* a ClientResponse instance with the data returned from the endpoint.
*
* @param expectedStatus the HTTP status that should be returned from the server
* @param stream the StreamingOutput that will be used for the POST data
* @param mediaType the content-type for the streamed data
* @param pathArgs variable list of arguments used to build the URI
* @return a ClientResponse instance with the data returned from the endpoint
* @throws GitLabApiException if any exception occurs during execution
*/
protected Response post(Response.Status expectedStatus, StreamingOutput stream, String mediaType, Object... pathArgs) throws GitLabApiException {
try {
return validate(getApiClient().post(stream, mediaType, pathArgs), expectedStatus);
} catch (Exception e) {
throw handle(e);
}
}
/**
* Perform an HTTP POST call with the specified form data and path objects, returning
* a ClientResponse instance with the data returned from the endpoint.
*
* @param expectedStatus the HTTP status that should be returned from the server
* @param queryParams multivalue map of request parameters
* @param pathArgs variable list of arguments used to build the URI
* @return a ClientResponse instance with the data returned from the endpoint
* @throws GitLabApiException if any exception occurs during execution
*/
protected Response post(Response.Status expectedStatus, MultivaluedMap queryParams, Object... pathArgs) throws GitLabApiException {
try {
return validate(getApiClient().post(queryParams, pathArgs), expectedStatus);
} catch (Exception e) {
throw handle(e);
}
}
/**
* Perform an HTTP POST call with the specified form data and URL, returning
* a ClientResponse instance with the data returned from the endpoint.
*
* @param expectedStatus the HTTP status that should be returned from the server
* @param formData the Form containing the name/value pairs for the POST data
* @param url the fully formed path to the GitLab API endpoint
* @return a ClientResponse instance with the data returned from the endpoint
* @throws GitLabApiException if any exception occurs during execution
*/
protected Response post(Response.Status expectedStatus, Form formData, URL url) throws GitLabApiException {
try {
return validate(getApiClient().post(formData, url), expectedStatus);
} catch (Exception e) {
throw handle(e);
}
}
/**
* Perform a file upload with the specified File instance and path objects, returning
* a ClientResponse instance with the data returned from the endpoint.
*
* @param expectedStatus the HTTP status that should be returned from the server
* @param name the name for the form field that contains the file name
* @param fileToUpload a File instance pointing to the file to upload
* @param mediaType the content-type of the uploaded file, if null will be determined from fileToUpload
* @param pathArgs variable list of arguments used to build the URI
* @return a ClientResponse instance with the data returned from the endpoint
* @throws GitLabApiException if any exception occurs during execution
*/
protected Response upload(Response.Status expectedStatus, String name, File fileToUpload, String mediaType, Object... pathArgs) throws GitLabApiException {
try {
return validate(getApiClient().upload(name, fileToUpload, mediaType, pathArgs), expectedStatus);
} catch (Exception e) {
throw handle(e);
}
}
/**
* Perform a file upload with the specified File instance and path objects, returning
* a ClientResponse instance with the data returned from the endpoint.
*
* @param expectedStatus the HTTP status that should be returned from the server
* @param name the name for the form field that contains the file name
* @param fileToUpload a File instance pointing to the file to upload
* @param mediaType the content-type of the uploaded file, if null will be determined from fileToUpload
* @param url the fully formed path to the GitLab API endpoint
* @return a ClientResponse instance with the data returned from the endpoint
* @throws GitLabApiException if any exception occurs during execution
*/
protected Response upload(Response.Status expectedStatus, String name, File fileToUpload, String mediaType, URL url) throws GitLabApiException {
try {
return validate(getApiClient().upload(name, fileToUpload, mediaType, url), expectedStatus);
} catch (Exception e) {
throw handle(e);
}
}
/**
* Perform a file upload with the specified File instance and path objects, returning
* a ClientResponse instance with the data returned from the endpoint.
*
* @param expectedStatus the HTTP status that should be returned from the server
* @param name the name for the form field that contains the file name
* @param fileToUpload a File instance pointing to the file to upload
* @param mediaType the content-type of the uploaded file, if null will be determined from fileToUpload
* @param formData the Form containing the name/value pairs
* @param url the fully formed path to the GitLab API endpoint
* @return a ClientResponse instance with the data returned from the endpoint
* @throws GitLabApiException if any exception occurs during execution
*/
protected Response upload(Response.Status expectedStatus, String name, File fileToUpload, String mediaType, Form formData, URL url) throws GitLabApiException {
try {
return validate(getApiClient().upload(name, fileToUpload, mediaType, formData, url), expectedStatus);
} catch (Exception e) {
throw handle(e);
}
}
/**
* Perform an HTTP PUT call with the specified form data and path objects, returning
* a ClientResponse instance with the data returned from the endpoint.
*
* @param expectedStatus the HTTP status that should be returned from the server
* @param queryParams multivalue map of request parameters
* @param pathArgs variable list of arguments used to build the URI
* @return a ClientResponse instance with the data returned from the endpoint
* @throws GitLabApiException if any exception occurs during execution
*/
protected Response put(Response.Status expectedStatus, MultivaluedMap queryParams, Object... pathArgs) throws GitLabApiException {
try {
return validate(getApiClient().put(queryParams, pathArgs), expectedStatus);
} catch (Exception e) {
throw handle(e);
}
}
/**
* Perform an HTTP PUT call with the specified form data and URL, returning
* a ClientResponse instance with the data returned from the endpoint.
*
* @param expectedStatus the HTTP status that should be returned from the server
* @param queryParams multivalue map of request parameters
* @param url the fully formed path to the GitLab API endpoint
* @return a ClientResponse instance with the data returned from the endpoint
* @throws GitLabApiException if any exception occurs during execution
*/
protected Response put(Response.Status expectedStatus, MultivaluedMap queryParams, URL url) throws GitLabApiException {
try {
return validate(getApiClient().put(queryParams, url), expectedStatus);
} catch (Exception e) {
throw handle(e);
}
}
/**
* Perform an HTTP PUT call with the specified form data and path objects, returning
* a ClientResponse instance with the data returned from the endpoint.
*
* @param expectedStatus the HTTP status that should be returned from the server
* @param formData the Form containing the name/value pairs for the POST data
* @param pathArgs variable list of arguments used to build the URI
* @return a ClientResponse instance with the data returned from the endpoint
* @throws GitLabApiException if any exception occurs during execution
*/
protected Response putWithFormData(Response.Status expectedStatus, Form formData, Object... pathArgs) throws GitLabApiException {
try {
return validate(getApiClient().put(formData, pathArgs), expectedStatus);
} catch (Exception e) {
throw handle(e);
}
}
/**
* Perform a file upload using the HTTP PUT method with the specified File instance and path objects,
* returning a ClientResponse instance with the data returned from the endpoint.
*
* @param expectedStatus the HTTP status that should be returned from the server
* @param name the name for the form field that contains the file name
* @param fileToUpload a File instance pointing to the file to upload
* @param pathArgs variable list of arguments used to build the URI
* @return a ClientResponse instance with the data returned from the endpoint
* @throws GitLabApiException if any exception occurs during execution
*/
protected Response putUpload(Response.Status expectedStatus, String name, File fileToUpload, Object... pathArgs) throws GitLabApiException {
try {
return validate(getApiClient().putUpload(name, fileToUpload, pathArgs), expectedStatus);
} catch (Exception e) {
throw handle(e);
}
}
/**
* Perform a file upload using the HTTP PUT method with the specified File instance and path objects,
* returning a ClientResponse instance with the data returned from the endpoint.
*
* @param expectedStatus the HTTP status that should be returned from the server
* @param name the name for the form field that contains the file name
* @param fileToUpload a File instance pointing to the file to upload
* @param url the fully formed path to the GitLab API endpoint
* @return a ClientResponse instance with the data returned from the endpoint
* @throws GitLabApiException if any exception occurs during execution
*/
protected Response putUpload(Response.Status expectedStatus, String name, File fileToUpload, URL url) throws GitLabApiException {
try {
return validate(getApiClient().putUpload(name, fileToUpload, url), expectedStatus);
} catch (Exception e) {
throw handle(e);
}
}
/**
* Perform an HTTP DELETE call with the specified form data and path objects, returning
* a ClientResponse instance with the data returned from the endpoint.
*
* @param expectedStatus the HTTP status that should be returned from the server
* @param queryParams multivalue map of request parameters
* @param pathArgs variable list of arguments used to build the URI
* @return a ClientResponse instance with the data returned from the endpoint
* @throws GitLabApiException if any exception occurs during execution
*/
protected Response delete(Response.Status expectedStatus, MultivaluedMap queryParams, Object... pathArgs) throws GitLabApiException {
try {
return validate(getApiClient().delete(queryParams, pathArgs), expectedStatus);
} catch (Exception e) {
throw handle(e);
}
}
/**
* Perform an HTTP DELETE call with the specified form data and URL, returning
* a ClientResponse instance with the data returned from the endpoint.
*
* @param expectedStatus the HTTP status that should be returned from the server
* @param queryParams multivalue map of request parameters
* @param url the fully formed path to the GitLab API endpoint
* @return a ClientResponse instance with the data returned from the endpoint
* @throws GitLabApiException if any exception occurs during execution
*/
protected Response delete(Response.Status expectedStatus, MultivaluedMap queryParams, URL url) throws GitLabApiException {
try {
return validate(getApiClient().delete(queryParams, url), expectedStatus);
} catch (Exception e) {
throw handle(e);
}
}
/**
* Convenience method for adding query and form parameters to a get() or post() call.
*
* @param formData the Form containing the name/value pairs
* @param name the name of the field/attribute to add
* @param value the value of the field/attribute to add
*/
protected void addFormParam(Form formData, String name, Object value) throws IllegalArgumentException {
addFormParam(formData, name, value, false);
}
/**
* Convenience method for adding query and form parameters to a get() or post() call.
* If required is true and value is null, will throw an IllegalArgumentException.
*
* @param formData the Form containing the name/value pairs
* @param name the name of the field/attribute to add
* @param value the value of the field/attribute to add
* @param required the field is required flag
* @throws IllegalArgumentException if a required parameter is null or empty
*/
protected void addFormParam(Form formData, String name, Object value, boolean required) throws IllegalArgumentException {
if (value == null) {
if (required) {
throw new IllegalArgumentException(name + " cannot be empty or null");
}
return;
}
String stringValue = value.toString();
if (required && stringValue.trim().length() == 0) {
throw new IllegalArgumentException(name + " cannot be empty or null");
}
formData.param(name, stringValue);
}
/**
* Validates response the response from the server against the expected HTTP status and
* the returned secret token, if either is not correct will throw a GitLabApiException.
*
* @param response response
* @param expected expected response status
* @return original response if the response status is expected
* @throws GitLabApiException if HTTP status is not as expected, or the secret token doesn't match
*/
protected Response validate(Response response, Response.Status expected) throws GitLabApiException {
int responseCode = response.getStatus();
int expectedResponseCode = expected.getStatusCode();
if (responseCode != expectedResponseCode) {
// If the expected code is 200-204 and the response code is 200-204 it is OK. We do this because
// GitLab is constantly changing the expected code in the 200 to 204 range
if (expectedResponseCode > 204 || responseCode > 204 || expectedResponseCode < 200 || responseCode < 200)
throw new GitLabApiException(response);
}
if (!getApiClient().validateSecretToken(response)) {
throw new GitLabApiException(new NotAuthorizedException("Invalid secret token in response."));
}
return (response);
}
/**
* Wraps an exception in a GitLabApiException if needed.
*
* @param thrown the exception that should be wrapped
* @return either the untouched GitLabApiException or a new GitLabApiExceptin wrapping a non-GitLabApiException
*/
protected GitLabApiException handle(Exception thrown) {
if (thrown instanceof GitLabApiException) {
return ((GitLabApiException) thrown);
}
return (new GitLabApiException(thrown));
}
/**
* Creates a MultivaluedMap instance containing the "per_page" param.
*
* @param perPage the number of projects per page
* @return a MultivaluedMap instance containing the "per_page" param
*/
protected MultivaluedMap getPerPageQueryParam(int perPage) {
return (new GitLabApiForm().withParam(PER_PAGE_PARAM, perPage).asMap());
}
/**
* Creates a MultivaluedMap instance containing "page" and "per_page" params.
*
* @param page the page to get
* @param perPage the number of projects per page
* @return a MultivaluedMap instance containing "page" and "per_page" params
*/
protected MultivaluedMap getPageQueryParams(int page, int perPage) {
return (new GitLabApiForm().withParam(PAGE_PARAM, page).withParam(PER_PAGE_PARAM, perPage).asMap());
}
/**
* Creates a MultivaluedMap instance containing "page" and "per_page" params.
*
* @param page the page to get
* @param perPage the number of projects per page
* @param customAttributesEnabled enables customAttributes for this query
* @return a MultivaluedMap instance containing "page" and "per_page" params
*/
protected MultivaluedMap getPageQueryParams(int page, int perPage, boolean customAttributesEnabled) {
GitLabApiForm form = new GitLabApiForm().withParam(PAGE_PARAM, page).withParam(PER_PAGE_PARAM, perPage);
if (customAttributesEnabled)
return (form.withParam("with_custom_attributes", true).asMap());
return (form.asMap());
}
/**
* Creates a MultivaluedMap instance containing the "per_page" param with the default value.
*
* @return a MultivaluedMap instance containing the "per_page" param with the default value
*/
protected MultivaluedMap getDefaultPerPageParam() {
return (new GitLabApiForm().withParam(PER_PAGE_PARAM, getDefaultPerPage()).asMap());
}
/**
* Creates a MultivaluedMap instance containing the "per_page" param with the default value.
*
* @param customAttributesEnabled enables customAttributes for this query
* @return a MultivaluedMap instance containing the "per_page" param with the default value
*/
protected MultivaluedMap getDefaultPerPageParam(boolean customAttributesEnabled) {
GitLabApiForm form = new GitLabApiForm().withParam(PER_PAGE_PARAM, getDefaultPerPage());
if (customAttributesEnabled)
return (form.withParam("with_custom_attributes", true).asMap());
return (form.asMap());
}
}