Add method to update code_owner_approval_required flag to Protected Branches API

.gitignore

@@ -26,6 +26,9 @@ local.properties
 .classpath
 .settings/
 .loadpath
+
+### Visual Studio Code ###
+.vscode
 
 # External tool builders
 .externalToolBuilders/
@@ -45,7 +48,7 @@ target/
 
 # Test properties file for gitlab4j
 test-gitlab4j.properties
-!src/test/resoures/test-gitlab4j.properties
+!src/test/resources/test-gitlab4j.properties
 
 # git-changelog plugin #
 .okhttpcache

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

@@ -272,6 +272,42 @@ protected Response head(Response.Status expectedStatus, MultivaluedMap<String, S
         }
     }
 
+    /**
+     * Perform an HTTP PATCH 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 patch(Response.Status expectedStatus, MultivaluedMap<String, String> queryParams, Object... pathArgs) throws GitLabApiException {
+        try {
+            return validate(getApiClient().patch(queryParams, pathArgs), expectedStatus);
+        } catch (Exception e) {
+            throw handle(e);
+        }
+    }
+
+    /**
+     * Perform an HTTP PATCH 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 patch(Response.Status expectedStatus, MultivaluedMap<String, String> queryParams, URL url) throws GitLabApiException {
+        try {
+            return validate(getApiClient().patch(queryParams, url), 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.

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

@@ -287,8 +287,8 @@ void enableRequestResponseLogging(Logger logger, Level level, int maxEntityLengt
      * @param readTimeout the per request read timeout in milliseconds, can be null to use default
      */
     void setRequestTimeout(Integer connectTimeout, Integer readTimeout) {
-	this.connectTimeout = connectTimeout;
-	this.readTimeout = readTimeout;
+        this.connectTimeout = connectTimeout;
+        this.readTimeout = readTimeout;
     }
 
     /**
@@ -470,6 +470,35 @@ protected Response head(MultivaluedMap<String, String> queryParams, URL url) {
         return (invocation(url, queryParams).head());
     }
 
+    /**
+     * Perform an HTTP PATCH call with the specified query parameters and path objects, returning
+     * a ClientResponse instance with the data returned from the endpoint.
+     *
+     * @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 IOException if an error occurs while constructing the URL
+     */
+    protected Response patch(MultivaluedMap<String, String> queryParams, Object... pathArgs) throws IOException {
+        URL url = getApiUrl(pathArgs);
+        return (patch(queryParams, url));
+    }
+
+    /**
+     * Perform an HTTP PATCH call with the specified query parameters and URL, returning
+     * a ClientResponse instance with the data returned from the endpoint.
+     *
+     * @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
+     */
+    protected Response patch(MultivaluedMap<String, String> queryParams, URL url) {
+        Entity<?> empty = Entity.text("");
+        // use "X-HTTP-Method-Override" header on POST to override to unsupported PATCH
+        return (invocation(url, queryParams)
+                .header("X-HTTP-Method-Override", "PATCH").post(empty));
+    }
+
     /**
      * Perform an HTTP POST call with the specified form data and path objects, returning
      * a ClientResponse instance with the data returned from the endpoint.
@@ -918,7 +947,7 @@ public void checkServerTrusted(X509Certificate[] chain, String authType, SSLEngi
         // Ignore differences between given hostname and certificate hostname
         HostnameVerifier hostnameVerifier = new HostnameVerifier() {
             @Override
-			public boolean verify(String hostname, SSLSession session) {
+            public boolean verify(String hostname, SSLSession session) {
                 return true;
             }
         };

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

@@ -154,8 +154,8 @@ public ProtectedBranch protectBranch(Object projectIdOrPath, String branchName,
      * @throws GitLabApiException if any exception occurs
      */
     public ProtectedBranch protectBranch(Object projectIdOrPath, String branchName,
-	    AccessLevel pushAccessLevel, AccessLevel mergeAccessLevel, AccessLevel unprotectAccessLevel,
-	    Boolean codeOwnerApprovalRequired) throws GitLabApiException {
+            AccessLevel pushAccessLevel, AccessLevel mergeAccessLevel, AccessLevel unprotectAccessLevel,
+            Boolean codeOwnerApprovalRequired) throws GitLabApiException {
         Form formData = new GitLabApiForm()
                 .withParam("name", branchName, true)
                 .withParam("push_access_level", pushAccessLevel)
@@ -184,10 +184,10 @@ public ProtectedBranch protectBranch(Object projectIdOrPath, String branchName,
      * @throws GitLabApiException if any exception occurs
      */
     public ProtectedBranch protectBranch(Object projectIdOrPath, String branchName,
-	    Integer allowedToPushUserId, Integer allowedToMergeUserId, Integer allowedToUnprotectUserId,
-	    Boolean codeOwnerApprovalRequired) throws GitLabApiException {
+            Integer allowedToPushUserId, Integer allowedToMergeUserId, Integer allowedToUnprotectUserId,
+            Boolean codeOwnerApprovalRequired) throws GitLabApiException {
 
-	Form formData = new GitLabApiForm()
+        Form formData = new GitLabApiForm()
                 .withParam("name", branchName, true)
                 .withParam("allowed_to_push[][user_id]", allowedToPushUserId)
                 .withParam("allowed_to_merge[][user_id]", allowedToMergeUserId)
@@ -215,22 +215,46 @@ public ProtectedBranch protectBranch(Object projectIdOrPath, String branchName,
      * @throws GitLabApiException if any exception occurs
      */
     public ProtectedBranch protectBranch(Object projectIdOrPath, String branchName,
-	    AllowedTo allowedToPush, AllowedTo allowedToMerge, AllowedTo allowedToUnprotect,
-	    Boolean codeOwnerApprovalRequired) throws GitLabApiException {
+            AllowedTo allowedToPush, AllowedTo allowedToMerge, AllowedTo allowedToUnprotect,
+            Boolean codeOwnerApprovalRequired) throws GitLabApiException {
 
         GitLabApiForm formData = new GitLabApiForm()
                 .withParam("name", branchName, true)
                 .withParam("code_owner_approval_required", codeOwnerApprovalRequired);
 
-	if (allowedToPush != null)
-	    allowedToPush.getForm(formData, "allowed_to_push");
-	if (allowedToMerge != null)
-	    allowedToMerge.getForm(formData, "allowed_to_merge");
-	if (allowedToUnprotect != null)
-	    allowedToUnprotect.getForm(formData, "allowed_to_unprotect");
+        if (allowedToPush != null)
+            allowedToPush.getForm(formData, "allowed_to_push");
+        if (allowedToMerge != null)
+            allowedToMerge.getForm(formData, "allowed_to_merge");
+        if (allowedToUnprotect != null)
+            allowedToUnprotect.getForm(formData, "allowed_to_unprotect");
 
-	Response response = post(Response.Status.CREATED, formData.asMap(),
+        Response response = post(Response.Status.CREATED, formData.asMap(),
                 "projects", getProjectIdOrPath(projectIdOrPath), "protected_branches");
         return (response.readEntity(ProtectedBranch.class));
     }
+
+    /**
+     * Sets the code_owner_approval_required flag on the specified protected branch.
+     *
+     * <p>NOTE: This method is only available in GitLab Premium or higher.</p>
+     *
+     * <pre><code>GitLab Endpoint: PATCH /projects/:id/protected_branches/:branch_name?code_owner_approval_required=true</code></pre>
+     *
+     * @param projectIdOrPath the project in the form of an Long(ID), String(path), or Project instance
+     * @param branchName the name of the branch to protect, can be a wildcard
+     * @param codeOwnerApprovalRequired prevent pushes to this branch if it matches an item in the CODEOWNERS file.
+     * @return the branch info for the protected branch
+     * @throws GitLabApiException if any exception occurs
+     */
+    public ProtectedBranch setCodeOwnerApprovalRequired(Object projectIdOrPath, String branchName,
+            Boolean codeOwnerApprovalRequired) throws GitLabApiException {
+        Form formData = new GitLabApiForm()
+                .withParam("code_owner_approval_required", codeOwnerApprovalRequired);
+
+        Response response = patch(Response.Status.OK, formData.asMap(),
+                "projects", this.getProjectIdOrPath(projectIdOrPath),
+                "protected_branches", urlEncode(branchName));
+        return (response.readEntity(ProtectedBranch.class));
+    }
 }

src/test/java/org/gitlab4j/api/TestProtectedBranchesApi.java

@@ -1,7 +1,9 @@
 package org.gitlab4j.api;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
 import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertThrowsExactly;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 import static org.junit.jupiter.api.Assumptions.assumeTrue;
 
@@ -45,7 +47,7 @@ public class TestProtectedBranchesApi extends AbstractIntegrationTest {
 
     @BeforeAll
     public static void setup() {
-	// Must setup the connection to the GitLab test server and get the test Project instance
+        // Must setup the connection to the GitLab test server and get the test Project instance
         gitLabApi = baseTestSetup();
         testProject = getTestProject();
     }
@@ -124,4 +126,20 @@ public void testProtectBranch() throws GitLabApiException {
         assertTrue(branches.stream()
                 .anyMatch((protectedBranch) -> protectedBranch.getName().equals(TEST_BRANCH_NAME)));
     }
+
+    @Test
+    public void testSetCodeOwnerApprovalRequired() throws GitLabApiException {
+
+        assumeTrue(testProject != null);
+
+        ProtectedBranch branch = gitLabApi.getProtectedBranchesApi().getProtectedBranch(testProject, TEST_BRANCH_NAME);
+        assertNotNull(branch);
+        // current version returns null, but will return boolean (false) with newer Premium
+        assertFalse(branch.getCodeOwnerApprovalRequired() != null);
+
+        // current version returns 404, but will return branch with "code_owner_approval_required = true" with newer Premium
+        GitLabApiException gae = assertThrowsExactly(GitLabApiException.class,
+                () -> gitLabApi.getProtectedBranchesApi().setCodeOwnerApprovalRequired(testProject, TEST_BRANCH_NAME, true));
+        assertTrue(gae.getHttpStatus() == 404);
+    }
 }