Addd support for getting license and custom attributes (#567)

src/main/java/org/gitlab4j/api/ProjectApi.java

@@ -723,6 +723,50 @@ public class ProjectApi extends AbstractApi implements Constants {
         }
     }
 
+    /**
+     * Get a specific project, which is owned by the authentication user.
+     *
+     * <pre><code>GitLab Endpoint: GET /projects/:id</code></pre>
+     *
+     * @param projectIdOrPath the project in the form of an Integer(ID), String(path), or Project instance
+     * @param includeStatistics include project statistics
+     * @param includeLicense include project license data
+     * @param withCustomAttributes include custom attributes in response (admins only)
+     * @return the specified project
+     * @throws GitLabApiException if any exception occurs
+     */
+    public Project getProject(Object projectIdOrPath, Boolean includeStatistics,
+	    Boolean includeLicense, Boolean withCustomAttributes) throws GitLabApiException {
+        Form formData = new GitLabApiForm()
+        	.withParam("statistics", includeStatistics)
+        	.withParam("license", includeLicense)
+        	.withParam("with_custom_attributes", withCustomAttributes);
+        Response response = get(Response.Status.OK, formData.asMap(),
+        	"projects", getProjectIdOrPath(projectIdOrPath));
+        return (response.readEntity(Project.class));
+    }
+
+    /**
+     * Get an Optional instance with the value for the specific project, which is owned by the authentication user.
+     *
+     * <pre><code>GitLab Endpoint: GET /projects/:id</code></pre>
+     *
+     * @param projectIdOrPath the project in the form of an Integer(ID), String(path), or Project instance
+     * @param includeStatistics include project statistics
+     * @param includeLicense include project license data
+     * @param withCustomAttributes include custom attributes in response (admins only)
+     * @return an Optional instance with the specified project as a value
+     */
+    public Optional<Project> getOptionalProject(Object projectIdOrPath, Boolean includeStatistics,
+	    Boolean includeLicense, Boolean withCustomAttributes) {
+        try {
+            return (Optional.ofNullable(getProject(projectIdOrPath,
+        	    includeStatistics, includeLicense, withCustomAttributes)));
+        } catch (GitLabApiException glae) {
+            return (GitLabApi.createOptionalFromException(glae));
+        }
+    }
+
     /**
      * Get a specific project, which is owned by the authentication user.
      *

src/main/java/org/gitlab4j/api/ProjectLicense.java

+package org.gitlab4j.api;
+
+import org.gitlab4j.api.utils.JacksonJson;
+
+public class ProjectLicense {
+
+    private String key;
+    private String name;
+    private String nickname;
+    private String htmlUrl;
+    private String sourceUrl;
+
+    public String getKey() {
+        return key;
+    }
+
+    public void setKey(String key) {
+        this.key = key;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getNickname() {
+        return nickname;
+    }
+
+    public void setNickname(String nickname) {
+        this.nickname = nickname;
+    }
+
+    public String getHtmlUrl() {
+        return htmlUrl;
+    }
+
+    public void setHtmlUrl(String htmlUrl) {
+        this.htmlUrl = htmlUrl;
+    }
+
+    public String getSourceUrl() {
+        return sourceUrl;
+    }
+
+    public void setSourceUrl(String sourceUrl) {
+        this.sourceUrl = sourceUrl;
+    }
+
+    @Override
+    public String toString() {
+        return (JacksonJson.toJsonString(this));
+    }
+}

src/main/java/org/gitlab4j/api/models/Project.java

@@ -4,6 +4,7 @@ package org.gitlab4j.api.models;
 import java.util.Date;
 import java.util.List;
 
+import org.gitlab4j.api.ProjectLicense;
 import org.gitlab4j.api.utils.JacksonJson;
 import org.gitlab4j.api.utils.JacksonJsonEnumHelper;
 
@@ -86,6 +87,9 @@ public class Project {
     private Boolean initializeWithReadme;
     private Boolean packagesEnabled;
     private Boolean emptyRepo;
+    private String licenseUrl;
+    private ProjectLicense license;
+    private List<CustomAttribute> customAttributes;
 
     @JsonSerialize(using = JacksonJson.DateOnlySerializer.class)
     private Date markedForDeletionOn;
@@ -659,6 +663,30 @@ public class Project {
         this.markedForDeletionOn = markedForDeletionOn;
     }
 
+    public String getLicenseUrl() {
+        return licenseUrl;
+    }
+
+    public void setLicenseUrl(String licenseUrl) {
+        this.licenseUrl = licenseUrl;
+    }
+
+    public ProjectLicense getLicense() {
+        return license;
+    }
+
+    public void setLicense(ProjectLicense license) {
+        this.license = license;
+    }
+
+    public List<CustomAttribute> getCustomAttributes() {
+        return customAttributes;
+    }
+
+    public void setCustomAttributes(List<CustomAttribute> customAttributes) {
+        this.customAttributes = customAttributes;
+    }
+
     public static final boolean isValid(Project project) {
         return (project != null && project.getId() != null);
     }

src/test/resources/org/gitlab4j/api/project.json

@@ -77,5 +77,14 @@
     "lfs_objects_size": 2118052893,
     "job_artifacts_size": 166537174716
   },
-  "marked_for_deletion_on": "2016-06-17"
+  "marked_for_deletion_on": "2016-06-17",
+  "license_url": "http://example.com/diaspora/diaspora-client/blob/master/LICENSE",
+  "license": {
+    "key": "lgpl-3.0",
+    "name": "GNU Lesser General Public License v3.0",
+    "nickname": "GNU LGPLv3",
+    "html_url": "http://choosealicense.com/licenses/lgpl-3.0/",
+    "source_url": "http://www.gnu.org/licenses/lgpl-3.0.txt"
+  },
+  "custom_attributes": []
 }
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