Merge branch 'feature/protected-branch' of https://github.com/team-lab/gitbucket into team-lab-feature/protected-branch

2025-11-08 14:35:52 +01:00 · 2016-01-17 00:01:18 +09:00
parent 2b2ae718f7 766867f341
commit 4abd4a4bac
32 changed files with 1133 additions and 227 deletions
--- a/src/main/resources/update/3_10.sql
+++ b/src/main/resources/update/3_10.sql
@@ -0,0 +1,25 @@
+DROP TABLE IF EXISTS PROTECTED_BRANCH;
+
+CREATE TABLE PROTECTED_BRANCH(
+    USER_NAME VARCHAR(100) NOT NULL,
+    REPOSITORY_NAME VARCHAR(100) NOT NULL,
+    BRANCH VARCHAR(100) NOT NULL,
+    STATUS_CHECK_ADMIN BOOLEAN NOT NULL DEFAULT false
+);
+
+ALTER TABLE PROTECTED_BRANCH ADD CONSTRAINT IDX_PROTECTED_BRANCH_PK PRIMARY KEY (USER_NAME, REPOSITORY_NAME, BRANCH);
+ALTER TABLE PROTECTED_BRANCH ADD CONSTRAINT IDX_PROTECTED_BRANCH_FK0 FOREIGN KEY (USER_NAME, REPOSITORY_NAME) REFERENCES REPOSITORY (USER_NAME, REPOSITORY_NAME)
+  ON DELETE CASCADE ON UPDATE CASCADE;
+
+
+DROP TABLE IF EXISTS PROTECTED_BRANCH_REQUIRE_CONTEXT;
+CREATE TABLE PROTECTED_BRANCH_REQUIRE_CONTEXT(
+    USER_NAME VARCHAR(100) NOT NULL,
+    REPOSITORY_NAME VARCHAR(100) NOT NULL,
+    BRANCH VARCHAR(100) NOT NULL,
+    CONTEXT VARCHAR(255) NOT NULL
+);
+
+ALTER TABLE PROTECTED_BRANCH_REQUIRE_CONTEXT ADD CONSTRAINT IDX_PROTECTED_BRANCH_REQUIRE_CONTEXT_PK PRIMARY KEY (USER_NAME, REPOSITORY_NAME, BRANCH, CONTEXT);
+ALTER TABLE PROTECTED_BRANCH_REQUIRE_CONTEXT ADD CONSTRAINT IDX_PROTECTED_BRANCH_REQUIRE_CONTEXT_FK0 FOREIGN KEY (USER_NAME, REPOSITORY_NAME, BRANCH) REFERENCES PROTECTED_BRANCH (USER_NAME, REPOSITORY_NAME, BRANCH)
+  ON DELETE CASCADE ON UPDATE CASCADE;
--- a/src/main/scala/gitbucket/core/api/ApiBranch.scala
+++ b/src/main/scala/gitbucket/core/api/ApiBranch.scala
@@ -0,0 +1,16 @@
+package gitbucket.core.api
+
+import gitbucket.core.util.RepositoryName
+
+/**
+ * https://developer.github.com/v3/repos/#get-branch
+ * https://developer.github.com/v3/repos/#enabling-and-disabling-branch-protection
+ */
+case class ApiBranch(
+  name: String,
+  // commit: ApiBranchCommit,
+  protection: ApiBranchProtection)(repositoryName:RepositoryName) extends FieldSerializable {
+  def _links = Map(
+   "self" -> ApiPath(s"/api/v3/repos/${repositoryName.fullName}/branches/${name}"),
+   "html" -> ApiPath(s"/${repositoryName.fullName}/tree/${name}"))
+}
--- a/src/main/scala/gitbucket/core/api/ApiBranchProtection.scala
+++ b/src/main/scala/gitbucket/core/api/ApiBranchProtection.scala
@@ -0,0 +1,47 @@
+package gitbucket.core.api
+
+import gitbucket.core.service.ProtectedBrancheService
+import org.json4s._
+
+/** https://developer.github.com/v3/repos/#enabling-and-disabling-branch-protection */
+case class ApiBranchProtection(enabled: Boolean, required_status_checks: Option[ApiBranchProtection.Status]){
+  def status: ApiBranchProtection.Status = required_status_checks.getOrElse(ApiBranchProtection.statusNone)
+}
+
+object ApiBranchProtection{
+  /** form for enabling-and-disabling-branch-protection */
+  case class EnablingAndDisabling(protection: ApiBranchProtection)
+
+  def apply(info: ProtectedBrancheService.ProtectedBranchInfo): ApiBranchProtection = ApiBranchProtection(
+    enabled = info.enabled,
+    required_status_checks = Some(Status(EnforcementLevel(info.enabled, info.includeAdministrators), info.contexts)))
+  val statusNone = Status(Off, Seq.empty)
+  case class Status(enforcement_level: EnforcementLevel, contexts: Seq[String])
+  sealed class EnforcementLevel(val name: String)
+  case object Off extends EnforcementLevel("off")
+  case object NonAdmins extends EnforcementLevel("non_admins")
+  case object Everyone extends EnforcementLevel("everyone")
+  object EnforcementLevel {
+    def apply(enabled: Boolean, includeAdministrators: Boolean): EnforcementLevel = if(enabled){
+      if(includeAdministrators){
+        Everyone
+      }else{
+        NonAdmins
+      }
+    }else{
+      Off
+    }
+  }
+
+  implicit val enforcementLevelSerializer = new CustomSerializer[EnforcementLevel](format => (
+   {
+     case JString("off") => Off
+     case JString("non_admins") => NonAdmins
+     case JString("everyone") => Everyone
+   },
+   {
+     case x: EnforcementLevel => JString(x.name)
+   }
+ ))
+}
+
--- a/src/main/scala/gitbucket/core/api/JsonFormat.scala
+++ b/src/main/scala/gitbucket/core/api/JsonFormat.scala
@@ -30,7 +30,8 @@ object JsonFormat {
    FieldSerializer[ApiCombinedCommitStatus]() +
    FieldSerializer[ApiPullRequest.Commit]() +
    FieldSerializer[ApiIssue]() +
-    FieldSerializer[ApiComment]()
+    FieldSerializer[ApiComment]() +
+    ApiBranchProtection.enforcementLevelSerializer

  def apiPathSerializer(c: Context) = new CustomSerializer[ApiPath](format =>
    (
--- a/src/main/scala/gitbucket/core/controller/ControllerBase.scala
+++ b/src/main/scala/gitbucket/core/controller/ControllerBase.scala
@@ -28,7 +28,7 @@ abstract class ControllerBase extends ScalatraFilter
  with ClientSideValidationFormSupport with JacksonJsonSupport with I18nSupport with FlashMapSupport with Validations
  with SystemSettingsService {

-  implicit val jsonFormats = DefaultFormats
+  implicit val jsonFormats = gitbucket.core.api.JsonFormat.jsonFormats

 // TODO Scala 2.11
 //  // Don't set content type via Accept header.
--- a/src/main/scala/gitbucket/core/controller/PullRequestsController.scala
+++ b/src/main/scala/gitbucket/core/controller/PullRequestsController.scala
@@ -1,7 +1,7 @@
 package gitbucket.core.controller

 import gitbucket.core.api._
-import gitbucket.core.model.{Account, CommitState, Repository, PullRequest, Issue}
+import gitbucket.core.model.{Account, CommitStatus, CommitState, Repository, PullRequest, Issue, WebHook}
 import gitbucket.core.pulls.html
 import gitbucket.core.service.CommitStatusService
 import gitbucket.core.service.MergeService
@@ -27,13 +27,13 @@ import scala.collection.JavaConverters._
 class PullRequestsController extends PullRequestsControllerBase
  with RepositoryService with AccountService with IssuesService with PullRequestService with MilestonesService with LabelsService
  with CommitsService with ActivityService with WebHookPullRequestService with ReferrerAuthenticator with CollaboratorsAuthenticator
-  with CommitStatusService with MergeService
+  with CommitStatusService with MergeService with ProtectedBrancheService


 trait PullRequestsControllerBase extends ControllerBase {
  self: RepositoryService with AccountService with IssuesService with MilestonesService with LabelsService
    with CommitsService with ActivityService with PullRequestService with WebHookPullRequestService with ReferrerAuthenticator with CollaboratorsAuthenticator
-    with CommitStatusService with MergeService =>
+    with CommitStatusService with MergeService with ProtectedBrancheService =>

  private val logger = LoggerFactory.getLogger(classOf[PullRequestsControllerBase])

@@ -119,7 +119,8 @@ trait PullRequestsControllerBase extends ControllerBase {
            commits,
            diffs,
            hasWritePermission(owner, name, context.loginAccount),
-            repository)
+            repository,
+            flash.toMap.map(f => f._1 -> f._2.toString))
        }
      }
    } getOrElse NotFound
@@ -166,22 +167,34 @@ trait PullRequestsControllerBase extends ControllerBase {
    } getOrElse NotFound
  })

-  ajaxGet("/:owner/:repository/pull/:id/mergeguide")(collaboratorsOnly { repository =>
+  ajaxGet("/:owner/:repository/pull/:id/mergeguide")(referrersOnly { repository =>
    params("id").toIntOpt.flatMap{ issueId =>
      val owner = repository.owner
      val name  = repository.name
      getPullRequest(owner, name, issueId) map { case(issue, pullreq) =>
-        val statuses = getCommitStatues(owner, name, pullreq.commitIdTo)
-        val hasConfrict = LockUtil.lock(s"${owner}/${name}"){
+        val hasConflict = LockUtil.lock(s"${owner}/${name}"){
          checkConflict(owner, name, pullreq.branch, issueId)
        }
-        val hasProblem = hasConfrict || (!statuses.isEmpty && CommitState.combine(statuses.map(_.state).toSet) != CommitState.SUCCESS)
+        val hasMergePermission = hasWritePermission(owner, name, context.loginAccount)
+        val branchProtection = getProtectedBranchInfo(owner, name, pullreq.branch)
+        val mergeStatus = PullRequestService.MergeStatus(
+           hasConflict         = hasConflict,
+           commitStatues       = getCommitStatues(owner, name, pullreq.commitIdTo),
+           branchProtection    = branchProtection,
+           branchIsOutOfDate   = JGitUtil.getShaByRef(owner, name, pullreq.branch) != Some(pullreq.commitIdFrom),
+           needStatusCheck     = context.loginAccount.map{ u =>
+                                   branchProtection.needStatusCheck(u.userName)
+                                 }.getOrElse(true),
+           hasUpdatePermission = hasWritePermission(pullreq.requestUserName, pullreq.requestRepositoryName, context.loginAccount) &&
+                                   context.loginAccount.map{ u =>
+                                     !getProtectedBranchInfo(pullreq.requestUserName, pullreq.requestRepositoryName, pullreq.requestBranch).needStatusCheck(u.userName)
+                                   }.getOrElse(false),
+           hasMergePermission  = hasMergePermission,
+           commitIdTo          = pullreq.commitIdTo)
        html.mergeguide(
-          hasConfrict,
-          hasProblem,
+          mergeStatus,
          issue,
          pullreq,
-          statuses,
          repository,
          getRepository(pullreq.requestUserName, pullreq.requestRepositoryName, context.baseUrl).get)
      }
@@ -203,6 +216,75 @@ trait PullRequestsControllerBase extends ControllerBase {
    } getOrElse NotFound
  })

+  post("/:owner/:repository/pull/:id/update_branch")(referrersOnly { baseRepository =>
+    (for {
+      issueId <- params("id").toIntOpt
+      loginAccount <- context.loginAccount
+      (issue, pullreq) <- getPullRequest(baseRepository.owner, baseRepository.name, issueId)
+      owner = pullreq.requestUserName
+      name  = pullreq.requestRepositoryName
+      if hasWritePermission(owner, name, context.loginAccount)
+    } yield {
+      val branchProtection = getProtectedBranchInfo(owner, name, pullreq.requestBranch)
+      if(branchProtection.needStatusCheck(loginAccount.userName)){
+        flash += "error" -> s"branch ${pullreq.requestBranch} is protected need status check."
+      } else {
+        val repository = getRepository(owner, name, context.baseUrl).get
+        LockUtil.lock(s"${owner}/${name}"){
+          val alias = if(pullreq.repositoryName == pullreq.requestRepositoryName && pullreq.userName == pullreq.requestUserName){
+            pullreq.branch
+          }else{
+            s"${pullreq.userName}:${pullreq.branch}"
+          }
+          val existIds = using(Git.open(Directory.getRepositoryDir(owner, name))) { git => JGitUtil.getAllCommitIds(git) }.toSet
+          pullRemote(owner, name, pullreq.requestBranch, pullreq.userName, pullreq.repositoryName, pullreq.branch, loginAccount,
+                     "Merge branch '${alias}' into ${pullreq.requestBranch}") match {
+            case None => // conflict
+              flash += "error" -> s"Can't automatic merging branch '${alias}' into ${pullreq.requestBranch}."
+            case Some(oldId) =>
+              // update pull request
+              updatePullRequests(owner, name, pullreq.requestBranch)
+
+              using(Git.open(Directory.getRepositoryDir(owner, name))) { git =>
+                //  after update branch
+
+                val newCommitId = git.getRepository.resolve(s"refs/heads/${pullreq.requestBranch}")
+                val commits = git.log.addRange(oldId, newCommitId).call.iterator.asScala.map(c => new JGitUtil.CommitInfo(c)).toList
+
+                commits.foreach{ commit =>
+                  if(!existIds.contains(commit.id)){
+                    createIssueComment(owner, name, commit)
+                  }
+                }
+
+                // record activity
+                recordPushActivity(owner, name, loginAccount.userName, pullreq.branch, commits)
+
+                // close issue by commit message
+                if(pullreq.requestBranch == repository.repository.defaultBranch){
+                  commits.map{ commit =>
+                    closeIssuesFromMessage(commit.fullMessage, loginAccount.userName, owner, name)
+                  }
+                }
+
+                // call web hook
+                callPullRequestWebHookByRequestBranch("synchronize", repository, pullreq.requestBranch, baseUrl, loginAccount)
+                callWebHookOf(owner, name, WebHook.Push) {
+                  for {
+                    ownerAccount <- getAccountByUserName(owner)
+                  } yield {
+                    WebHookService.WebHookPushPayload(git, loginAccount, pullreq.requestBranch, repository, commits, ownerAccount, oldId = oldId, newId = newCommitId)
+                  }
+                }
+              }
+              flash += "info" -> s"Merge branch '${alias}' into ${pullreq.requestBranch}"
+          }
+        }
+        redirect(s"/${repository.owner}/${repository.name}/pull/${issueId}")
+      }
+    }) getOrElse NotFound
+  })
+
  post("/:owner/:repository/pull/:id/merge", mergeForm)(collaboratorsOnly { (form, repository) =>
    params("id").toIntOpt.flatMap { issueId =>
      val owner = repository.owner
@@ -528,4 +610,15 @@ trait PullRequestsControllerBase extends ControllerBase {
        repository,
        hasWritePermission(owner, repoName, context.loginAccount))
    }
+
+  // TODO: same as gitbucket.core.servlet.CommitLogHook ...
+  private def createIssueComment(owner: String, repository: String, commit: CommitInfo) = {
+    StringUtil.extractIssueId(commit.fullMessage).foreach { issueId =>
+      if(getIssue(owner, repository, issueId).isDefined){
+        getAccountByMailAddress(commit.committerEmailAddress).foreach { account =>
+          createComment(owner, repository, account.userName, issueId.toInt, commit.fullMessage + " " + commit.id, "commit")
+        }
+      }
+    }
+  }
 }
--- a/src/main/scala/gitbucket/core/controller/RepositorySettingsController.scala
+++ b/src/main/scala/gitbucket/core/controller/RepositorySettingsController.scala
@@ -2,7 +2,7 @@ package gitbucket.core.controller

 import gitbucket.core.settings.html
 import gitbucket.core.model.WebHook
-import gitbucket.core.service.{RepositoryService, AccountService, WebHookService}
+import gitbucket.core.service.{RepositoryService, AccountService, WebHookService, ProtectedBrancheService, CommitStatusService}
 import gitbucket.core.service.WebHookService._
 import gitbucket.core.util._
 import gitbucket.core.util.JGitUtil._
@@ -18,23 +18,29 @@ import org.eclipse.jgit.lib.ObjectId


 class RepositorySettingsController extends RepositorySettingsControllerBase
-  with RepositoryService with AccountService with WebHookService
+  with RepositoryService with AccountService with WebHookService with ProtectedBrancheService with CommitStatusService
  with OwnerAuthenticator with UsersAuthenticator

 trait RepositorySettingsControllerBase extends ControllerBase {
-  self: RepositoryService with AccountService with WebHookService
+  self: RepositoryService with AccountService with WebHookService with ProtectedBrancheService with CommitStatusService
    with OwnerAuthenticator with UsersAuthenticator =>

  // for repository options
-  case class OptionsForm(repositoryName: String, description: Option[String], defaultBranch: String, isPrivate: Boolean)
+  case class OptionsForm(repositoryName: String, description: Option[String], isPrivate: Boolean)
  
  val optionsForm = mapping(
    "repositoryName" -> trim(label("Repository Name", text(required, maxlength(40), identifier, renameRepositoryName))),
    "description"    -> trim(label("Description"    , optional(text()))),
-    "defaultBranch"  -> trim(label("Default Branch" , text(required, maxlength(100)))),
    "isPrivate"      -> trim(label("Repository Type", boolean()))
  )(OptionsForm.apply)

+  // for default branch
+  case class DefaultBranchForm(defaultBranch: String)
+
+  val defaultBranchForm = mapping(
+    "defaultBranch"  -> trim(label("Default Branch" , text(required, maxlength(100))))
+  )(DefaultBranchForm.apply)
+
  // for collaborator addition
  case class CollaboratorForm(userName: String)

@@ -75,12 +81,10 @@ trait RepositorySettingsControllerBase extends ControllerBase {
   * Save the repository options.
   */
  post("/:owner/:repository/settings/options", optionsForm)(ownerOnly { (form, repository) =>
-    val defaultBranch = if(repository.branchList.isEmpty) "master" else form.defaultBranch
    saveRepositoryOptions(
      repository.owner,
      repository.name,
      form.description,
-      defaultBranch,
      repository.repository.parentUserName.map { _ =>
        repository.repository.isPrivate
      } getOrElse form.isPrivate
@@ -98,14 +102,61 @@ trait RepositorySettingsControllerBase extends ControllerBase {
        FileUtils.moveDirectory(dir, getWikiRepositoryDir(repository.owner, form.repositoryName))
      }
    }
-    // Change repository HEAD
-    using(Git.open(getRepositoryDir(repository.owner, form.repositoryName))) { git =>
-      git.getRepository.updateRef(Constants.HEAD, true).link(Constants.R_HEADS + defaultBranch)
-    }
    flash += "info" -> "Repository settings has been updated."
    redirect(s"/${repository.owner}/${form.repositoryName}/settings/options")
  })

+  /** branch settings */
+  get("/:owner/:repository/settings/branches")(ownerOnly { repository =>
+    val protecteions = getProtectedBranchList(repository.owner, repository.name)
+    html.branches(repository, protecteions, flash.get("info"))
+  });
+
+  /** Update default branch */
+  post("/:owner/:repository/settings/update_default_branch", defaultBranchForm)(ownerOnly { (form, repository) =>
+    if(repository.branchList.find(_ == form.defaultBranch).isEmpty){
+      redirect(s"/${repository.owner}/${repository.name}/settings/options")
+    }else{
+      saveRepositoryDefaultBranch(repository.owner, repository.name, form.defaultBranch)
+      // Change repository HEAD
+      using(Git.open(getRepositoryDir(repository.owner, repository.name))) { git =>
+        git.getRepository.updateRef(Constants.HEAD, true).link(Constants.R_HEADS + form.defaultBranch)
+      }
+      flash += "info" -> "Repository default branch has been updated."
+      redirect(s"/${repository.owner}/${repository.name}/settings/branches")
+    }
+  })
+
+  /** Branch protection for branch */
+  get("/:owner/:repository/settings/branches/:branch")(ownerOnly { repository =>
+    import gitbucket.core.api._
+    val branch = params("branch")
+    if(repository.branchList.find(_ == branch).isEmpty){
+      redirect(s"/${repository.owner}/${repository.name}/settings/branches")
+    }else{
+      val protection = ApiBranchProtection(getProtectedBranchInfo(repository.owner, repository.name, branch))
+      val lastWeeks = getRecentStatuesContexts(repository.owner, repository.name, org.joda.time.LocalDateTime.now.minusWeeks(1).toDate).toSet
+      val knownContexts = (lastWeeks ++ protection.status.contexts).toSeq.sortBy(identity)
+      html.branchprotection(repository, branch, protection, knownContexts, flash.get("info"))
+    }
+  });
+
+  /** https://developer.github.com/v3/repos/#enabling-and-disabling-branch-protection */
+  patch("/api/v3/repos/:owner/:repo/branches/:branch")(ownerOnly { repository =>
+    import gitbucket.core.api._
+    (for{
+      branch <- params.get("branch") if repository.branchList.find(_ == branch).isDefined
+      protection <- extractFromJsonBody[ApiBranchProtection.EnablingAndDisabling].map(_.protection)
+    } yield {
+      if(protection.enabled){
+        enableBranchProtection(repository.owner, repository.name, branch, protection.status.enforcement_level == ApiBranchProtection.Everyone, protection.status.contexts)
+      }else{
+        disableBranchProtection(repository.owner, repository.name, branch)
+      }
+      JsonFormat(ApiBranch(branch, protection)(RepositoryName(repository)))
+    }) getOrElse NotFound
+  })
+
  /**
   * Display the Collaborators page.
   */
--- a/src/main/scala/gitbucket/core/controller/RepositoryViewerController.scala
+++ b/src/main/scala/gitbucket/core/controller/RepositoryViewerController.scala
@@ -14,7 +14,6 @@ import gitbucket.core.util.ControlUtil._
 import gitbucket.core.util.Implicits._
 import gitbucket.core.util.Directory._
 import gitbucket.core.model.{Account, CommitState, WebHook}
-import gitbucket.core.service.CommitStatusService
 import gitbucket.core.service.WebHookService._
 import gitbucket.core.view
 import gitbucket.core.view.helpers
@@ -34,7 +33,7 @@ import org.scalatra._
 class RepositoryViewerController extends RepositoryViewerControllerBase
  with RepositoryService with AccountService with ActivityService with IssuesService with WebHookService with CommitsService
  with ReadableUsersAuthenticator with ReferrerAuthenticator with CollaboratorsAuthenticator with PullRequestService with CommitStatusService
-  with WebHookPullRequestService with WebHookPullRequestReviewCommentService
+  with WebHookPullRequestService with WebHookPullRequestReviewCommentService with ProtectedBrancheService

 /**
 * The repository viewer.
@@ -42,7 +41,7 @@ class RepositoryViewerController extends RepositoryViewerControllerBase
 trait RepositoryViewerControllerBase extends ControllerBase {
  self: RepositoryService with AccountService with ActivityService with IssuesService with WebHookService with CommitsService
    with ReadableUsersAuthenticator with ReferrerAuthenticator with CollaboratorsAuthenticator with PullRequestService with CommitStatusService
-    with WebHookPullRequestService with WebHookPullRequestReviewCommentService =>
+    with WebHookPullRequestService with WebHookPullRequestReviewCommentService with ProtectedBrancheService =>

  ArchiveCommand.registerFormat("zip", new ZipFormat)
  ArchiveCommand.registerFormat("tar.gz", new TgzFormat)
@@ -222,12 +221,15 @@ trait RepositoryViewerControllerBase extends ControllerBase {

  get("/:owner/:repository/new/*")(collaboratorsOnly { repository =>
    val (branch, path) = splitPath(repository, multiParams("splat").head)
+    val protectedBranch = getProtectedBranchInfo(repository.owner, repository.name, branch).needStatusCheck(context.loginAccount.get.userName)
    html.editor(branch, repository, if(path.length == 0) Nil else path.split("/").toList,
-      None, JGitUtil.ContentInfo("text", None, Some("UTF-8")))
+      None, JGitUtil.ContentInfo("text", None, Some("UTF-8")),
+      protectedBranch)
  })

  get("/:owner/:repository/edit/*")(collaboratorsOnly { repository =>
    val (branch, path) = splitPath(repository, multiParams("splat").head)
+    val protectedBranch = getProtectedBranchInfo(repository.owner, repository.name, branch).needStatusCheck(context.loginAccount.get.userName)

    using(Git.open(getRepositoryDir(repository.owner, repository.name))){ git =>
      val revCommit = JGitUtil.getRevCommitFromId(git, git.getRepository.resolve(branch))
@@ -235,7 +237,8 @@ trait RepositoryViewerControllerBase extends ControllerBase {
      getPathObjectId(git, path, revCommit).map { objectId =>
        val paths = path.split("/")
        html.editor(branch, repository, paths.take(paths.size - 1).toList, Some(paths.last),
-          JGitUtil.getContentInfo(git, path, objectId))
+          JGitUtil.getContentInfo(git, path, objectId),
+          protectedBranch)
      } getOrElse NotFound
    }
  })
@@ -486,6 +489,7 @@ trait RepositoryViewerControllerBase extends ControllerBase {
   * Displays branches.
   */
  get("/:owner/:repository/branches")(referrersOnly { repository =>
+    val protectedBranches = getProtectedBranchList(repository.owner, repository.name).toSet
    val branches = JGitUtil.getBranches(
      owner         = repository.owner,
      name          = repository.name,
@@ -493,7 +497,7 @@ trait RepositoryViewerControllerBase extends ControllerBase {
      origin        = repository.repository.originUserName.isEmpty
    )
    .sortBy(br => (br.mergeInfo.isEmpty, br.commitTime))
-    .map(br => br -> getPullRequestByRequestCommit(repository.owner, repository.name, repository.repository.defaultBranch, br.name, br.commitId))
+    .map(br => (br, getPullRequestByRequestCommit(repository.owner, repository.name, repository.repository.defaultBranch, br.name, br.commitId), protectedBranches.contains(br.name)))
    .reverse

    html.branches(branches, hasWritePermission(repository.owner, repository.name, context.loginAccount), repository)
--- a/src/main/scala/gitbucket/core/model/BasicTemplate.scala
+++ b/src/main/scala/gitbucket/core/model/BasicTemplate.scala
@@ -54,4 +54,9 @@ protected[model] trait TemplateComponent { self: Profile =>
      byRepository(userName, repositoryName) && (this.commitId === commitId)
  }

+  trait BranchTemplate extends BasicTemplate{ self: Table[_] =>
+    val branch = column[String]("BRANCH")
+    def byBranch(owner: String, repository: String, branchName: String) = byRepository(owner, repository) && (branch === branchName.bind)
+    def byBranch(owner: Column[String], repository: Column[String], branchName: Column[String]) = byRepository(owner, repository) && (this.branch === branchName)
+  }
 }
--- a/src/main/scala/gitbucket/core/model/CommitStatus.scala
+++ b/src/main/scala/gitbucket/core/model/CommitStatus.scala
@@ -19,7 +19,7 @@ trait CommitStatusComponent extends TemplateComponent { self: Profile =>
    val creator = column[String]("CREATOR")
    val registeredDate = column[java.util.Date]("REGISTERED_DATE")
    val updatedDate = column[java.util.Date]("UPDATED_DATE")
-    def * = (commitStatusId, userName, repositoryName, commitId, context, state, targetUrl, description, creator, registeredDate, updatedDate) <> (CommitStatus.tupled, CommitStatus.unapply)
+    def * = (commitStatusId, userName, repositoryName, commitId, context, state, targetUrl, description, creator, registeredDate, updatedDate) <> ((CommitStatus.apply _).tupled, CommitStatus.unapply)
    def byPrimaryKey(id: Int) = commitStatusId === id.bind
  }
 }
@@ -38,7 +38,20 @@ case class CommitStatus(
  registeredDate: java.util.Date,
  updatedDate: java.util.Date
 )
-
+object CommitStatus {
+  def pending(owner: String, repository: String, context: String) = CommitStatus(
+    commitStatusId = 0,
+    userName = owner,
+    repositoryName = repository,
+    commitId = "",
+    context = context,
+    state = CommitState.PENDING,
+    targetUrl = None,
+    description = Some("Waiting for status to be reported"),
+    creator = "",
+    registeredDate = new java.util.Date(),
+    updatedDate = new java.util.Date())
+}

 sealed abstract class CommitState(val name: String)

--- a/src/main/scala/gitbucket/core/model/Profile.scala
+++ b/src/main/scala/gitbucket/core/model/Profile.scala
@@ -50,5 +50,6 @@ trait CoreProfile extends ProfileProvider with Profile
  with WebHookComponent
  with WebHookEventComponent
  with PluginComponent
+  with ProtectedBranchComponent

 object Profile extends CoreProfile
--- a/src/main/scala/gitbucket/core/model/ProtectedBranch.scala
+++ b/src/main/scala/gitbucket/core/model/ProtectedBranch.scala
@@ -0,0 +1,37 @@
+package gitbucket.core.model
+
+import scala.slick.lifted.MappedTo
+import scala.slick.jdbc._
+
+trait ProtectedBranchComponent extends TemplateComponent { self: Profile =>
+  import profile.simple._
+  import self._
+
+  lazy val ProtectedBranches = TableQuery[ProtectedBranches]
+  class ProtectedBranches(tag: Tag) extends Table[ProtectedBranch](tag, "PROTECTED_BRANCH") with BranchTemplate {
+    val statusCheckAdmin = column[Boolean]("STATUS_CHECK_ADMIN")
+    def * = (userName, repositoryName, branch, statusCheckAdmin) <> (ProtectedBranch.tupled, ProtectedBranch.unapply)
+    def byPrimaryKey(userName: String, repositoryName: String, branch: String) = byBranch(userName, repositoryName, branch)
+    def byPrimaryKey(userName: Column[String], repositoryName: Column[String], branch: Column[String]) = byBranch(userName, repositoryName, branch)
+  }
+
+  lazy val ProtectedBranchContexts = TableQuery[ProtectedBranchContexts]
+  class ProtectedBranchContexts(tag: Tag) extends Table[ProtectedBranchContext](tag, "PROTECTED_BRANCH_REQUIRE_CONTEXT") with BranchTemplate {
+    val context = column[String]("CONTEXT")
+    def * = (userName, repositoryName, branch, context) <> (ProtectedBranchContext.tupled, ProtectedBranchContext.unapply)
+  }
+}
+
+
+case class ProtectedBranch(
+  userName: String,
+  repositoryName: String,
+  branch: String,
+  statusCheckAdmin: Boolean)
+
+
+case class ProtectedBranchContext(
+  userName: String,
+  repositoryName: String,
+  branch: String,
+  context: String)
--- a/src/main/scala/gitbucket/core/service/CommitStatusService.scala
+++ b/src/main/scala/gitbucket/core/service/CommitStatusService.scala
@@ -7,7 +7,8 @@ import gitbucket.core.model.{CommitState, CommitStatus, Account}
 import gitbucket.core.util.Implicits._
 import gitbucket.core.util.StringUtil._
 import gitbucket.core.service.RepositoryService.RepositoryInfo
-
+import org.joda.time.LocalDateTime
+import gitbucket.core.model.Profile.dateColumnType

 trait CommitStatusService {
  /** insert or update */
@@ -42,6 +43,9 @@ trait CommitStatusService {
  def getCommitStatues(userName: String, repositoryName: String, sha: String)(implicit s: Session) :List[CommitStatus] =
    byCommitStatues(userName, repositoryName, sha).list

+  def getRecentStatuesContexts(userName: String, repositoryName: String, time: java.util.Date)(implicit s: Session) :List[String] =
+    CommitStatuses.filter(t => t.byRepository(userName, repositoryName)).filter(t => t.updatedDate > time.bind).groupBy(_.context).map(_._1).list
+
  def getCommitStatuesWithCreator(userName: String, repositoryName: String, sha: String)(implicit s: Session) :List[(CommitStatus, Account)] =
    byCommitStatues(userName, repositoryName, sha).innerJoin(Accounts)
      .filter{ case (t,a) => t.creator === a.userName }.list
--- a/src/main/scala/gitbucket/core/service/MergeService.scala
+++ b/src/main/scala/gitbucket/core/service/MergeService.scala
@@ -10,10 +10,9 @@ import org.eclipse.jgit.merge.MergeStrategy
 import org.eclipse.jgit.api.Git
 import org.eclipse.jgit.transport.RefSpec
 import org.eclipse.jgit.errors.NoMergeBaseException
-import org.eclipse.jgit.lib.{ObjectId, CommitBuilder, PersonIdent}
+import org.eclipse.jgit.lib.{ObjectId, CommitBuilder, PersonIdent, Repository}
 import org.eclipse.jgit.revwalk.RevWalk

-
 trait MergeService {
  import MergeService._
  /**
@@ -52,26 +51,30 @@ trait MergeService {
  /**
   * Checks whether conflict will be caused in merging. Returns true if conflict will be caused.
   */
-  def checkConflict(userName: String, repositoryName: String, branch: String,
-                            requestUserName: String, requestRepositoryName: String, requestBranch: String): Boolean = {
-    using(Git.open(getRepositoryDir(requestUserName, requestRepositoryName))) { git =>
-      val remoteRefName = s"refs/heads/${branch}"
-      val tmpRefName = s"refs/merge-check/${userName}/${branch}"
+  def tryMergeRemote(localUserName: String, localRepositoryName: String, localBranch: String,
+                      remoteUserName: String, remoteRepositoryName: String, remoteBranch: String): Option[(ObjectId, ObjectId, ObjectId)] = {
+    using(Git.open(getRepositoryDir(localUserName, localRepositoryName))) { git =>
+      val remoteRefName = s"refs/heads/${remoteBranch}"
+      val tmpRefName = s"refs/remote-temp/${remoteUserName}/${remoteRepositoryName}/${remoteBranch}"
      val refSpec = new RefSpec(s"${remoteRefName}:${tmpRefName}").setForceUpdate(true)
      try {
        // fetch objects from origin repository branch
        git.fetch
-           .setRemote(getRepositoryDir(userName, repositoryName).toURI.toString)
+           .setRemote(getRepositoryDir(remoteUserName, remoteRepositoryName).toURI.toString)
           .setRefSpecs(refSpec)
           .call
        // merge conflict check
        val merger = MergeStrategy.RECURSIVE.newMerger(git.getRepository, true)
-        val mergeBaseTip = git.getRepository.resolve(s"refs/heads/${requestBranch}")
+        val mergeBaseTip = git.getRepository.resolve(s"refs/heads/${localBranch}")
        val mergeTip = git.getRepository.resolve(tmpRefName)
        try {
-          !merger.merge(mergeBaseTip, mergeTip)
+          if(merger.merge(mergeBaseTip, mergeTip)){
+            Some((merger.getResultTreeId, mergeBaseTip, mergeTip))
+          }else{
+            None
+          }
        } catch {
-          case e: NoMergeBaseException =>  true
+          case e: NoMergeBaseException =>  None
        }
      } finally {
        val refUpdate = git.getRepository.updateRef(refSpec.getDestination)
@@ -80,8 +83,54 @@ trait MergeService {
      }
    }
  }
+  /**
+   * Checks whether conflict will be caused in merging. Returns true if conflict will be caused.
+   */
+  def checkConflict(userName: String, repositoryName: String, branch: String,
+                            requestUserName: String, requestRepositoryName: String, requestBranch: String): Boolean =
+    tryMergeRemote(userName, repositoryName, branch, requestUserName, requestRepositoryName, requestBranch).isEmpty
+
+  def pullRemote(localUserName: String, localRepositoryName: String, localBranch: String,
+                      remoteUserName: String, remoteRepositoryName: String, remoteBranch: String,
+                      loginAccount: Account, message: String): Option[ObjectId] = {
+    tryMergeRemote(localUserName, localRepositoryName, localBranch, remoteUserName, remoteRepositoryName, remoteBranch).map{ case (newTreeId, oldBaseId, oldHeadId) =>
+      using(Git.open(getRepositoryDir(localUserName, localRepositoryName))) { git =>
+        val committer = new PersonIdent(loginAccount.fullName, loginAccount.mailAddress)
+        val newCommit = Util.createMergeCommit(git.getRepository, newTreeId, committer, message, Seq(oldBaseId, oldHeadId))
+        Util.updateRefs(git.getRepository, s"refs/heads/${localBranch}", newCommit, false, committer, Some("merge"))
+      }
+      oldBaseId
+    }
+  }
+
 }
 object MergeService{
+  object Util{
+    // return treeId
+    def createMergeCommit(repository: Repository, treeId: ObjectId, committer: PersonIdent, message: String, parents: Seq[ObjectId]): ObjectId = {
+      val mergeCommit = new CommitBuilder()
+      mergeCommit.setTreeId(treeId)
+      mergeCommit.setParentIds(parents:_*)
+      mergeCommit.setAuthor(committer)
+      mergeCommit.setCommitter(committer)
+      mergeCommit.setMessage(message)
+      // insertObject and got mergeCommit Object Id
+      val inserter = repository.newObjectInserter
+      val mergeCommitId = inserter.insert(mergeCommit)
+      inserter.flush()
+      inserter.close()
+      mergeCommitId
+    }
+    def updateRefs(repository: Repository, ref: String, newObjectId: ObjectId, force: Boolean, committer: PersonIdent, refLogMessage: Option[String] = None):Unit = {
+      // update refs
+      val refUpdate = repository.updateRef(ref)
+      refUpdate.setNewObjectId(newObjectId)
+      refUpdate.setForceUpdate(force)
+      refUpdate.setRefLogIdent(committer)
+      refLogMessage.map(refUpdate.setRefLogMessage(_, true))
+      refUpdate.update()
+    }
+  }
  case class MergeCacheInfo(git:Git, branch:String, issueId:Int){
    val repository = git.getRepository
    val mergedBranchName = s"refs/pull/${issueId}/merge"
@@ -120,12 +169,7 @@ object MergeService{
      def updateBranch(treeId:ObjectId, message:String, branchName:String){
        // creates merge commit
        val mergeCommitId = createMergeCommit(treeId, committer, message)
-        // update refs
-        val refUpdate = repository.updateRef(branchName)
-        refUpdate.setNewObjectId(mergeCommitId)
-        refUpdate.setForceUpdate(true)
-        refUpdate.setRefLogIdent(committer)
-        refUpdate.update()
+        Util.updateRefs(repository, branchName, mergeCommitId, true, committer)
      }
      if(!conflicted){
        updateBranch(merger.getResultTreeId, s"Merge ${mergeTip.name} into ${mergeBaseTip.name}", mergedBranchName)
@@ -145,28 +189,12 @@ object MergeService{
      // creates merge commit
      val mergeCommitId = createMergeCommit(mergeResultCommit.getTree().getId(), committer, message)
      // update refs
-      val refUpdate = repository.updateRef(s"refs/heads/${branch}")
-      refUpdate.setNewObjectId(mergeCommitId)
-      refUpdate.setForceUpdate(false)
-      refUpdate.setRefLogIdent(committer)
-      refUpdate.setRefLogMessage("merged", true)
-      refUpdate.update()
+      Util.updateRefs(repository, s"refs/heads/${branch}", mergeCommitId, false, committer, Some("merged"))
    }
    // return treeId
-    private def createMergeCommit(treeId:ObjectId, committer:PersonIdent, message:String) = {
-      val mergeCommit = new CommitBuilder()
-      mergeCommit.setTreeId(treeId)
-      mergeCommit.setParentIds(Array[ObjectId](mergeBaseTip, mergeTip): _*)
-      mergeCommit.setAuthor(committer)
-      mergeCommit.setCommitter(committer)
-      mergeCommit.setMessage(message)
-      // insertObject and got mergeCommit Object Id
-      val inserter = repository.newObjectInserter
-      val mergeCommitId = inserter.insert(mergeCommit)
-      inserter.flush()
-      inserter.close()
-      mergeCommitId
-    }
+    private def createMergeCommit(treeId: ObjectId, committer: PersonIdent, message: String) =
+      Util.createMergeCommit(repository, treeId, committer, message, Seq[ObjectId](mergeBaseTip, mergeTip))
+
    private def parseCommit(id:ObjectId) = using(new RevWalk( repository ))(_.parseCommit(id))
  }
 }
--- a/src/main/scala/gitbucket/core/service/ProtectedBrancheService.scala
+++ b/src/main/scala/gitbucket/core/service/ProtectedBrancheService.scala
@@ -0,0 +1,114 @@
+package gitbucket.core.service
+
+import gitbucket.core.model.{Collaborator, Repository, Account, CommitState, CommitStatus, ProtectedBranch, ProtectedBranchContext}
+import gitbucket.core.model.Profile._
+import gitbucket.core.util.JGitUtil
+import profile.simple._
+
+import org.eclipse.jgit.transport.ReceiveCommand
+import org.eclipse.jgit.transport.ReceivePack
+import org.eclipse.jgit.lib.ObjectId
+
+
+trait ProtectedBrancheService {
+  import ProtectedBrancheService._
+  private def getProtectedBranchInfoOpt(owner: String, repository: String, branch: String)(implicit session: Session): Option[ProtectedBranchInfo] =
+    ProtectedBranches
+      .leftJoin(ProtectedBranchContexts)
+      .on{ case (pb, c) => pb.byBranch(c.userName, c.repositoryName, c.branch) }
+      .map{ case (pb, c) => pb -> c.context.? }
+      .filter(_._1.byPrimaryKey(owner, repository, branch))
+      .list
+      .groupBy(_._1)
+      .map(p => p._1 -> p._2.flatMap(_._2))
+      .map{ case (t1, contexts) =>
+        new ProtectedBranchInfo(t1.userName, t1.repositoryName, true, contexts, t1.statusCheckAdmin)
+      }.headOption
+
+  def getProtectedBranchInfo(owner: String, repository: String, branch: String)(implicit session: Session): ProtectedBranchInfo =
+    getProtectedBranchInfoOpt(owner, repository, branch).getOrElse(ProtectedBranchInfo.disabled(owner, repository))
+
+  def getProtectedBranchList(owner: String, repository: String)(implicit session: Session): List[String] =
+    ProtectedBranches.filter(_.byRepository(owner, repository)).map(_.branch).list
+
+  def enableBranchProtection(owner: String, repository: String, branch:String, includeAdministrators: Boolean, contexts: Seq[String])(implicit session: Session): Unit = {
+    disableBranchProtection(owner, repository, branch)
+    ProtectedBranches.insert(new ProtectedBranch(owner, repository, branch, includeAdministrators && contexts.nonEmpty))
+    contexts.map{ context =>
+      ProtectedBranchContexts.insert(new ProtectedBranchContext(owner, repository, branch, context))
+    }
+  }
+
+  def disableBranchProtection(owner: String, repository: String, branch:String)(implicit session: Session): Unit =
+    ProtectedBranches.filter(_.byPrimaryKey(owner, repository, branch)).delete
+
+  def getBranchProtectedReason(owner: String, repository: String, isAllowNonFastForwards: Boolean, command: ReceiveCommand, pusher: String)(implicit session: Session): Option[String] = {
+    val branch = command.getRefName.stripPrefix("refs/heads/")
+    if(branch != command.getRefName){
+      getProtectedBranchInfo(owner, repository, branch).getStopReason(isAllowNonFastForwards, command, pusher)
+    }else{
+      None
+    }
+  }
+}
+object ProtectedBrancheService {
+  case class ProtectedBranchInfo(
+    owner: String,
+    repository: String,
+    enabled: Boolean,
+    /**
+     * Require status checks to pass before merging
+     * Choose which status checks must pass before branches can be merged into test.
+     * When enabled, commits must first be pushed to another branch,
+     * then merged or pushed directly to test after status checks have passed.
+     */
+    contexts: Seq[String],
+    /**
+     * Include administrators
+     * Enforce required status checks for repository administrators.
+     */
+    includeAdministrators: Boolean) extends AccountService with CommitStatusService {
+
+    def isAdministrator(pusher: String)(implicit session: Session): Boolean = pusher == owner || getGroupMembers(owner).filter(gm => gm.userName == pusher && gm.isManager).nonEmpty
+
+    /**
+     * Can't be force pushed
+     * Can't be deleted
+     * Can't have changes merged into them until required status checks pass
+     */
+    def getStopReason(isAllowNonFastForwards: Boolean, command: ReceiveCommand, pusher: String)(implicit session: Session): Option[String] = {
+      if(enabled){
+        command.getType() match {
+          case ReceiveCommand.Type.UPDATE|ReceiveCommand.Type.UPDATE_NONFASTFORWARD if isAllowNonFastForwards =>
+            Some("Cannot force-push to a protected branch")
+          case ReceiveCommand.Type.UPDATE|ReceiveCommand.Type.UPDATE_NONFASTFORWARD if needStatusCheck(pusher) =>
+            unSuccessedContexts(command.getNewId.name) match {
+              case s if s.size == 1 => Some(s"""Required status check "${s.toSeq(0)}" is expected""")
+              case s if s.size >= 1 => Some(s"${s.size} of ${contexts.size} required status checks are expected")
+              case _ => None
+            }
+          case ReceiveCommand.Type.DELETE =>
+            Some("Cannot delete a protected branch")
+          case _ => None
+        }
+      }else{
+        None
+      }
+    }
+    def unSuccessedContexts(sha1: String)(implicit session: Session): Set[String] = if(contexts.isEmpty){
+      Set.empty
+    } else {
+      contexts.toSet -- getCommitStatues(owner, repository, sha1).filter(_.state == CommitState.SUCCESS).map(_.context).toSet
+    }
+    def needStatusCheck(pusher: String)(implicit session: Session): Boolean = pusher match {
+      case _ if !enabled              => false
+      case _ if contexts.isEmpty      => false
+      case _ if includeAdministrators => true
+      case p if isAdministrator(p)    => false
+      case _                          => true
+    }
+  }
+  object ProtectedBranchInfo{
+    def disabled(owner: String, repository: String): ProtectedBranchInfo = ProtectedBranchInfo(owner, repository, false, Nil, false)
+  }
+}
--- a/src/main/scala/gitbucket/core/service/PullRequestService.scala
+++ b/src/main/scala/gitbucket/core/service/PullRequestService.scala
@@ -1,6 +1,6 @@
 package gitbucket.core.service

-import gitbucket.core.model.{Account, Issue, PullRequest, WebHook}
+import gitbucket.core.model.{Account, Issue, PullRequest, WebHook, CommitStatus, CommitState}
 import gitbucket.core.model.Profile._
 import gitbucket.core.util.JGitUtil
 import profile.simple._
@@ -145,4 +145,29 @@ object PullRequestService {

  case class PullRequestCount(userName: String, count: Int)

+  case class MergeStatus(
+    hasConflict: Boolean,
+    commitStatues:List[CommitStatus],
+    branchProtection: ProtectedBrancheService.ProtectedBranchInfo,
+    branchIsOutOfDate: Boolean,
+    hasUpdatePermission: Boolean,
+    needStatusCheck: Boolean,
+    hasMergePermission: Boolean,
+    commitIdTo: String){
+
+    val statuses: List[CommitStatus] =
+      commitStatues ++ (branchProtection.contexts.toSet -- commitStatues.map(_.context).toSet).map(CommitStatus.pending(branchProtection.owner, branchProtection.repository, _))
+    val hasRequiredStatusProblem = needStatusCheck && branchProtection.contexts.exists(context => statuses.find(_.context == context).map(_.state) != Some(CommitState.SUCCESS))
+    val hasProblem = hasRequiredStatusProblem || hasConflict || (!statuses.isEmpty && CommitState.combine(statuses.map(_.state).toSet) != CommitState.SUCCESS)
+    val canUpdate = branchIsOutOfDate && !hasConflict
+    val canMerge = hasMergePermission && !hasConflict && !hasRequiredStatusProblem
+    lazy val commitStateSummary:(CommitState, String) = {
+      val stateMap = statuses.groupBy(_.state)
+      val state = CommitState.combine(stateMap.keySet)
+      val summary = stateMap.map{ case (keyState, states) => states.size+" "+keyState.name }.mkString(", ")
+      state -> summary
+    }
+    lazy val statusesAndRequired:List[(CommitStatus, Boolean)] = statuses.map{ s => s -> branchProtection.contexts.exists(_==s.context) }
+    lazy val isAllSuccess = commitStateSummary._1==CommitState.SUCCESS
+  }
 }
--- a/src/main/scala/gitbucket/core/service/RepositoryService.scala
+++ b/src/main/scala/gitbucket/core/service/RepositoryService.scala
@@ -55,9 +55,11 @@ trait RepositoryService { self: AccountService =>
        val labels                  = Labels                 .filter(_.byRepository(oldUserName, oldRepositoryName)).list
        val issueComments           = IssueComments          .filter(_.byRepository(oldUserName, oldRepositoryName)).list
        val issueLabels             = IssueLabels            .filter(_.byRepository(oldUserName, oldRepositoryName)).list
-        val commitComments = CommitComments.filter(_.byRepository(oldUserName, oldRepositoryName)).list
-        val commitStatuses = CommitStatuses.filter(_.byRepository(oldUserName, oldRepositoryName)).list
+        val commitComments          = CommitComments         .filter(_.byRepository(oldUserName, oldRepositoryName)).list
+        val commitStatuses          = CommitStatuses         .filter(_.byRepository(oldUserName, oldRepositoryName)).list
        val collaborators           = Collaborators          .filter(_.byRepository(oldUserName, oldRepositoryName)).list
+        val protectedBranches       = ProtectedBranches      .filter(_.byRepository(oldUserName, oldRepositoryName)).list
+        val protectedBranchContexts = ProtectedBranchContexts.filter(_.byRepository(oldUserName, oldRepositoryName)).list

        Repositories.filter { t =>
          (t.originUserName === oldUserName.bind) && (t.originRepositoryName === oldRepositoryName.bind)
@@ -93,8 +95,10 @@ trait RepositoryService { self: AccountService =>
        PullRequests           .insertAll(pullRequests  .map(_.copy(userName = newUserName, repositoryName = newRepositoryName)) :_*)
        IssueComments          .insertAll(issueComments .map(_.copy(userName = newUserName, repositoryName = newRepositoryName)) :_*)
        Labels                 .insertAll(labels        .map(_.copy(userName = newUserName, repositoryName = newRepositoryName)) :_*)
-        CommitComments.insertAll(commitComments.map(_.copy(userName = newUserName, repositoryName = newRepositoryName)) :_*)
-        CommitStatuses.insertAll(commitStatuses.map(_.copy(userName = newUserName, repositoryName = newRepositoryName)) :_*)
+        CommitComments         .insertAll(commitComments.map(_.copy(userName = newUserName, repositoryName = newRepositoryName)) :_*)
+        CommitStatuses         .insertAll(commitStatuses.map(_.copy(userName = newUserName, repositoryName = newRepositoryName)) :_*)
+        ProtectedBranches      .insertAll(protectedBranches.map(_.copy(userName = newUserName, repositoryName = newRepositoryName)) :_*)
+        ProtectedBranchContexts.insertAll(protectedBranchContexts.map(_.copy(userName = newUserName, repositoryName = newRepositoryName)) :_*)

        // Update source repository of pull requests
        PullRequests.filter { t =>
@@ -310,10 +314,16 @@ trait RepositoryService { self: AccountService =>
   * Save repository options.
   */
  def saveRepositoryOptions(userName: String, repositoryName: String,
-      description: Option[String], defaultBranch: String, isPrivate: Boolean)(implicit s: Session): Unit =
+      description: Option[String], isPrivate: Boolean)(implicit s: Session): Unit =
    Repositories.filter(_.byRepository(userName, repositoryName))
-      .map { r => (r.description.?, r.defaultBranch, r.isPrivate, r.updatedDate) }
-      .update (description, defaultBranch, isPrivate, currentDate)
+      .map { r => (r.description.?, r.isPrivate, r.updatedDate) }
+      .update (description, isPrivate, currentDate)
+
+  def saveRepositoryDefaultBranch(userName: String, repositoryName: String,
+      defaultBranch: String)(implicit s: Session): Unit =
+    Repositories.filter(_.byRepository(userName, repositoryName))
+      .map { r => r.defaultBranch }
+      .update (defaultBranch)

  /**
   * Add collaborator to the repository.
--- a/src/main/scala/gitbucket/core/servlet/GitRepositoryServlet.scala
+++ b/src/main/scala/gitbucket/core/servlet/GitRepositoryServlet.scala
@@ -111,13 +111,18 @@ import scala.collection.JavaConverters._
 class CommitLogHook(owner: String, repository: String, pusher: String, baseUrl: String)(implicit session: Session)
  extends PostReceiveHook with PreReceiveHook
  with RepositoryService with AccountService with IssuesService with ActivityService with PullRequestService with WebHookService
-  with WebHookPullRequestService {
+  with WebHookPullRequestService with ProtectedBrancheService {
  
  private val logger = LoggerFactory.getLogger(classOf[CommitLogHook])
  private var existIds: Seq[String] = Nil

  def onPreReceive(receivePack: ReceivePack, commands: java.util.Collection[ReceiveCommand]): Unit = {
    try {
+      commands.asScala.foreach { command =>
+        getBranchProtectedReason(owner, repository, receivePack.isAllowNonFastForwards, command, pusher).map{ reason =>
+          command.setResult(ReceiveCommand.Result.REJECTED_OTHER_REASON, reason)
+        }
+      }
      using(Git.open(Directory.getRepositoryDir(owner, repository))) { git =>
        existIds = JGitUtil.getAllCommitIds(git)
      }
--- a/src/main/scala/gitbucket/core/view/helpers.scala
+++ b/src/main/scala/gitbucket/core/view/helpers.scala
@@ -289,10 +289,10 @@ object helpers extends AvatarImageProvider with LinkConverter with RequestCache
  }

  def commitStateIcon(state: CommitState) = Html(state match {
-    case CommitState.PENDING => "●"
-    case CommitState.SUCCESS => "&#x2714;"
-    case CommitState.ERROR   => "×"
-    case CommitState.FAILURE => "×"
+    case CommitState.PENDING => """<i style="color:inherit;width:inherit;height:inherit" class="octicon octicon-primitive-dot"></i>"""
+    case CommitState.SUCCESS => """<i style="color:inherit;width:inherit;height:inherit" class="octicon octicon-check"></i>"""
+    case CommitState.ERROR   => """<i style="color:inherit;width:inherit;height:inherit" class="octicon octicon-x"></i>"""
+    case CommitState.FAILURE => """<i style="color:inherit;width:inherit;height:inherit" class="octicon octicon-x"></i>"""
  })

  def commitStateText(state: CommitState, commitId:String) = state match {
--- a/src/main/twirl/gitbucket/core/pulls/conversation.scala.html
+++ b/src/main/twirl/gitbucket/core/pulls/conversation.scala.html
@@ -20,7 +20,7 @@
      case comment: gitbucket.core.model.IssueComment => Some(comment)
      case other => None
    }.exists(_.action == "merge")){ merged =>
-      @if(hasWritePermission && !issue.closed){
+      @if(!issue.closed){
        <div class="check-conflict" style="display: none;">
          <div class="box issue-comment-box" style="background-color: #fbeed5">
            <div class="box-content"class="issue-content" style="border: 1px solid #c09853; padding: 10px;">
@@ -55,10 +55,12 @@ $(function(){
    $('#merge-pull-request').show();
  });

-  @if(hasWritePermission){
-    $('.check-conflict').show();
+  var checkConflict = $('.check-conflict').show();
+  if(checkConflict.length){
    $.get('@url(repository)/pull/@issue.issueId/mergeguide', function(data){ $('.check-conflict').html(data); });
+  }

+  @if(hasWritePermission){
    $('.delete-branch').click(function(e){
      var branchName = $(e.target).data('name');
      return confirm('Are you sure you want to remove the ' + branchName + ' branch?');
--- a/src/main/twirl/gitbucket/core/pulls/mergeguide.scala.html
+++ b/src/main/twirl/gitbucket/core/pulls/mergeguide.scala.html
@@ -1,76 +1,93 @@
-@(hasConflict: Boolean,
-  hasProblem: Boolean,
+@(status: gitbucket.core.service.PullRequestService.MergeStatus,
  issue: gitbucket.core.model.Issue,
  pullreq: gitbucket.core.model.PullRequest,
-  statuses: List[model.CommitStatus],
  originRepository: gitbucket.core.service.RepositoryService.RepositoryInfo,
  forkedRepository: gitbucket.core.service.RepositoryService.RepositoryInfo)(implicit context: gitbucket.core.controller.Context)
@import gitbucket.core.service.SystemSettingsService
@import context._
@import gitbucket.core.view.helpers._
@import model.CommitState
-<div class="box issue-comment-box" style="background-color: @if(hasProblem){ #fbeed5 }else{ #d8f5cd };">
-  <div class="box-content issue-content" style="border: 1px solid @if(hasProblem){ #c09853 }else{ #95c97e }; padding: 10px;">
+<div class="box issue-comment-box" style="background-color: @if(status.hasProblem){ #fbeed5 }else{ #d8f5cd };">
+  <div class="box-content issue-content" style="border: 1px solid @if(status.hasProblem){ #c09853 }else{ #95c97e };padding:0">
    <div id="merge-pull-request">
-      @if(!statuses.isEmpty){
+      @if(!status.statuses.isEmpty){
        <div class="build-statuses">
-          @if(statuses.size==1){
-            @defining(statuses.head){ status =>
-            <div class="build-status-item">
-              @status.targetUrl.map{ url => <a class="pull-right" href="@url">Details</a> }
-              <span class="build-status-icon text-@{status.state.name}">@commitStateIcon(status.state)</span>
-              <strong class="text-@{status.state.name}">@commitStateText(status.state, pullreq.commitIdTo)</strong>
-              @status.description.map{ desc => <span class="muted">— @desc</span> }
-            </div>
-            }
-          } else {
-            @defining(statuses.groupBy(_.state)){ stateMap =>
-              @defining(CommitState.combine(stateMap.keySet)){ state =>
-                <div class="build-status-item">
+          @defining(status.commitStateSummary){ case (summaryState, summary) =>
+            <div class="build-status-item-header">
              <a class="pull-right" id="toggle-all-checks"></a>
-                  <span class="build-status-icon text-@{state.name}">@commitStateIcon(state)</span>
-                  <strong class="text-@{state.name}">@commitStateText(state, pullreq.commitIdTo)</strong>
-                  <span class="text-@{state.name}">— @{stateMap.map{ case (keyState, states) => states.size+" "+keyState.name }.mkString(", ")} checks</span>
+              <span class="build-status-icon text-@{summaryState.name}">@commitStateIcon(summaryState)</span>
+              <strong class="text-@{summaryState.name}">@commitStateText(summaryState, pullreq.commitIdTo)</strong>
+              <span class="text-@{summaryState.name}">— @summary checks</span>
            </div>
-                <div class="build-statuses-list" style="@if(state==CommitState.SUCCESS){ display:none; }else{ }">
-                  @statuses.map{ status =>
+          }
+          <div class="build-statuses-list" style="@if(status.isAllSuccess){ display:none; }else{ }">
+            @status.statusesAndRequired.map{ case (status, required) =>
            <div class="build-status-item">
-                    @status.targetUrl.map{ url => <a class="pull-right" href="@url">Details</a> }
+              <div class="pull-right">
+                @if(required){ <span class="label">Required</span> }
+                @status.targetUrl.map{ url => <a href="@url">Details</a> }
+              </div>
              <span class="build-status-icon text-@{status.state.name}">@commitStateIcon(status.state)</span>
-                    <span class="text-@{status.state.name}">@status.context</span>
+              <strong>@status.context</strong>
              @status.description.map{ desc => <span class="muted">— @desc</span> }
            </div>
            }
          </div>
-              }
-            }
-          }
        </div>
      }
-      <div class="pull-right">
-        <input type="button" class="btn @if(!hasProblem){ btn-success }else{ btn-default }" id="merge-pull-request-button" value="Merge pull request"@if(hasConflict){ disabled="true"}/>
-      </div>
-      <div>
-        @if(hasConflict){
-          <span class="strong">We can’t automatically merge this pull request.</span>
-        } else {
-          @if(hasProblem){
-            <span class="strong">Merge with caution!</span>
-          } else {
-            <span class="strong">This pull request can be automatically merged.</span>
-          }
-        }
-      </div>
+      <div style="padding:15px">
+        @if(status.hasConflict){
+          <div class="merge-indicator merge-indicator-alert"><span class="octicon octicon-alert"></span></div>
+          <span class="strong">This branch has conflicts that must be resolved</span>
          <div class="small">
-        @if(hasConflict){
-          <a href="#" id="show-command-line">Use the command line</a> to resolve conflicts before continuing.
+            @if(status.hasMergePermission){
+              <a href="#" class="show-command-line">Use the command line</a> to resolve conflicts before continuing.
            } else {
-          You can also merge branches on the <a href="#" id="show-command-line">command line</a>.
+              Only those with write access to this repository can merge pull requests.
            }
          </div>
-      <div id="command-line" style="display: none;">
-        <hr>
-        @if(hasConflict){
+        } else { @if(status.branchIsOutOfDate){
+          @if(status.hasUpdatePermission){
+            <div class="pull-right">
+              <form method="POST" action="@url(originRepository)/pull/@pullreq.issueId/update_branch">
+                <input type="hidden" name="expected_head_oid" value="@pullreq.commitIdFrom">
+                <button class="btn"@if(!status.canUpdate){ disabled="true"} id="update-branch-button">Update branch</button>
+              </form>
+            </div>
+          }
+          <div class="merge-indicator merge-indicator-alert"><span class="octicon octicon-alert"></span></div>
+          <span class="strong">This branch is out-of-date with the base branch</span>
+          <div class="small">
+            Merge the latest changes from <code>@pullreq.branch</code> into this branch.
+          </div>
+        } else { @if(status.hasRequiredStatusProblem) {
+          <div class="merge-indicator merge-indicator-warning"><span class="octicon octicon-primitive-dot"></span></div>
+          <span class="strong">Required statuses must pass before merging.</span>
+          <div class="small">
+            All required status checks on this pull request must run successfully to enable automatic merging.
+          </div>
+        } else {
+          <div class="merge-indicator merge-indicator-success"><span class="octicon octicon-check"></span></div>
+          @if(status.hasMergePermission){
+            <span class="strong">Merging can be performed automatically.</span>
+            <div class="small">
+              Merging can be performed automatically.
+            </div>
+          } else {
+            <span class="strong">This branch has no conflicts with the base branch.</span>
+            <div class="small">
+              Only those with write access to this repository can merge pull requests.
+            </div>
+          }
+        } } }
+      </div>
+      @if(status.hasMergePermission){
+        <div style="padding:15px;border-top:solid 1px #e5e5e5;background:#fafafa">
+          <input type="button" class="btn @if(!status.hasProblem){ btn-success }" id="merge-pull-request-button" value="Merge pull request"@if(!status.canMerge){ disabled="true"}/>
+          You can also merge branches on the <a href="#" class="show-command-line">command line</a>.
+          <div id="command-line" style="display: none;margin-top: 15px;">
+            <hr />
+            @if(status.hasConflict){
              <span class="strong">Checkout via command line</span>
              <p>
                If you cannot merge a pull request automatically here, you have the option of checking
@@ -90,7 +107,7 @@
                  <button class="btn btn-small" type="button" id="repository-url-ssh" style="border-radius: 0px;">SSH</button>
                }
              </div>
-          <input type="text" style="width: 500px;" value="@forkedRepository.httpUrl" id="repository-url" readonly>
+              <input type="text" style="width: 500px;" value="@forkedRepository.httpUrl" id="repository-url" readonly />
            }
            <div>
              <p>
@@ -116,6 +133,8 @@
            </div>
          </div>
        </div>
+      }
+    </div>
    <div id="confirm-merge-form" style="display: none;">
      <form method="POST" action="@url(originRepository)/pull/@pullreq.issueId/merge">
        <div class="strong">
@@ -134,8 +153,8 @@

 <script>
 $(function(){
-  $('#show-command-line').click(function(){
-    $('#command-line').show();
+  $('.show-command-line').click(function(){
+    $('#command-line').toggle();
    return false;
  });
  function setToggleAllChecksLabel(){
--- a/src/main/twirl/gitbucket/core/pulls/pullreq.scala.html
+++ b/src/main/twirl/gitbucket/core/pulls/pullreq.scala.html
@@ -8,7 +8,8 @@
  dayByDayCommits: Seq[Seq[gitbucket.core.util.JGitUtil.CommitInfo]],
  diffs: Seq[gitbucket.core.util.JGitUtil.DiffInfo],
  hasWritePermission: Boolean,
-  repository: gitbucket.core.service.RepositoryService.RepositoryInfo)(implicit context: gitbucket.core.controller.Context)
+  repository: gitbucket.core.service.RepositoryService.RepositoryInfo,
+  flash: Map[String, String])(implicit context: gitbucket.core.controller.Context)
@import context._
@import gitbucket.core.view.helpers._
@import gitbucket.core.model._
@@ -73,6 +74,12 @@
      </ul>
      <div class="tab-content fill-width pull-left">
        <div class="tab-pane active" id="conversation">
+          @flash.get("error").map{ error =>
+            <div class="alert alert-error">@error</div>
+          }
+          @flash.get("info").map{ info =>
+            <div class="alert alert-info">@info</div>
+          }
          @pulls.html.conversation(issue, pullreq, comments, issueLabels, collaborators, milestones, labels, hasWritePermission, repository)
        </div>
        <div class="tab-pane" id="commits">
--- a/src/main/twirl/gitbucket/core/repo/branches.scala.html
+++ b/src/main/twirl/gitbucket/core/repo/branches.scala.html
@@ -1,4 +1,4 @@
-@(branchInfo: Seq[(gitbucket.core.util.JGitUtil.BranchInfo, Option[(gitbucket.core.model.PullRequest, gitbucket.core.model.Issue)])],
+@(branchInfo: Seq[(gitbucket.core.util.JGitUtil.BranchInfo, Option[(gitbucket.core.model.PullRequest, gitbucket.core.model.Issue)], Boolean)],
  hasWritePermission: Boolean,
  repository: gitbucket.core.service.RepositoryService.RepositoryInfo)(implicit context: gitbucket.core.controller.Context)
@import context._
@@ -13,7 +13,7 @@
        </tr>
      </thead>
      <tbody>
-      @branchInfo.map { case (branch, prs) =>
+      @branchInfo.map { case (branch, prs, isProtected) =>
        <tr><td style="padding: 12px;">
          <div class="branch-action">
            @branch.mergeInfo.map{ info =>
@@ -47,14 +47,19 @@
                <span style="margin-left: 8px;">
                  @if(prs.map(!_._2.closed).getOrElse(false)){
                    <a class="disabled" data-toggle="tooltip" title="You can’t delete this branch because it has an open pull request"><i class="octicon octicon-trashcan"></i></a>
+                  } else {
+                    @if(isProtected){
+                      <a class="disabled" data-toggle="tooltip" title="You can’t delete a protected branch."><i class="octicon octicon-trashcan"></i></a>
                    } else {
                      <a href="@url(repository)/delete/@encodeRefName(branch.name)" class="delete-branch" data-name="@branch.name" @if(info.isMerged){ data-toggle="tooltip" title="this branch is merged" }><i class="octicon octicon-trashcan @if(info.isMerged){warning} else {danger}"></i></a>
                    }
+                  }
                </span>
              }
            }
          </div>
          <div class="branch-details">
+            @if(isProtected){ <span class="octicon octicon-shield" title="This branch is protected"></span> }
            <a href="@url(repository)/tree/@encodeRefName(branch.name)" class="branch-name">@branch.name</a>
            <span class="branch-meta">
              <span>Updated @helper.html.datetimeago(branch.commitTime, false)
--- a/src/main/twirl/gitbucket/core/repo/editor.scala.html
+++ b/src/main/twirl/gitbucket/core/repo/editor.scala.html
@@ -2,11 +2,15 @@
  repository: gitbucket.core.service.RepositoryService.RepositoryInfo,
  pathList: List[String],
  fileName: Option[String],
-  content: gitbucket.core.util.JGitUtil.ContentInfo)(implicit context: gitbucket.core.controller.Context)
+  content: gitbucket.core.util.JGitUtil.ContentInfo,
+  protectedBranch: Boolean)(implicit context: gitbucket.core.controller.Context)
@import context._
@import gitbucket.core.view.helpers._
@html.main(if(fileName.isEmpty) "New File" else s"Editing ${fileName.get} at ${branch} - ${repository.owner}/${repository.name}", Some(repository)) {
  @html.menu("code", repository){
+    @if(protectedBranch){
+      <div class="alert alert-danger">branch @branch is protected.</div>
+    }
    <form method="POST" action="@url(repository)/@if(fileName.isEmpty){create}else{update}" validate="true">
      <span class="error" id="error-newFileName"></span>
      <div class="head">
@@ -82,6 +86,9 @@ $(function(){
  @if(fileName.isDefined){
    editor.getSession().setMode("ace/mode/@editorType(fileName.get)");
  }
+  @if(protectedBranch){
+    editor.setReadOnly(true);
+  }

  editor.on('change', function(){
    updateCommitButtonStatus();
--- a/src/main/twirl/gitbucket/core/settings/branches.scala.html
+++ b/src/main/twirl/gitbucket/core/settings/branches.scala.html
@@ -0,0 +1,67 @@
+@(repository: gitbucket.core.service.RepositoryService.RepositoryInfo,
+  protectedBranchList: Seq[String],
+  info: Option[Any])(implicit context: gitbucket.core.controller.Context)
+@import context._
+@import gitbucket.core.view.helpers._
+@import gitbucket.core.model.WebHook._
+@html.main("Branches", Some(repository)){
+  @html.menu("settings", repository){
+    @menu("branches", repository){
+      @if(repository.branchList.isEmpty){
+        <div class="well">
+          <center>
+            <p><i class="octicon octicon-git-branch" style="font-size:300%"></i></p>
+            <p>You don’t have any branches</p>
+            <p>Before you can edit branch settings, you need to add a branch.</p>
+          </center>
+        </div>
+      }else{
+        @helper.html.information(info)
+        <div class="panel panel-default">
+          <div class="panel-heading">Default branch</div>
+          <div class="panel-body">
+            <p>The default branch is considered the “base” branch in your repository, against which all pull requests and code commits are automatically made, unless you specify a different branch.</p>
+            <form id="form" method="post" action="@url(repository)/settings/update_default_branch" validate="true" class="form-inline">
+              <span class="error" id="error-defaultBranch"></span>
+              <select name="defaultBranch" id="defaultBranch" class="form-control">
+                @repository.branchList.map { branch =>
+                  <option @if(branch==repository.repository.defaultBranch){ selected}>@branch</option>
+                }
+              </select>
+              <input type="submit" class="btn btn-default" value="Update" />
+            </form>
+          </div>
+        </div>
+
+        <div class="panel panel-default">
+          <div class="panel-heading">Protected branches</div>
+          <div class="panel-body">
+            <p>Protect branches to disable force pushing, prevent branches from being deleted, and optionally require status checks before merging. New to protected branches?
+              <form class="form-inline">
+                <select name="protectBranch" id="protectBranch" onchange="location=$(this).val()" class="form-control">
+                  <option>Choose a branch...</option>
+                  @repository.branchList.map { branch =>
+                    <option value="@url(repository)/settings/branches/@encodeRefName(branch)">@branch</option>
+                  }
+                </select>
+                <span class="error" id="error-protectBranch"></span>
+              </form>
+            </p>
+
+            <table class="table table-bordered table-hover branches">
+              @protectedBranchList.map{ branch =>
+              <tr><td>
+                <span class="branch-name">@branch</span>
+                <span class="branch-action">
+                  <a href="@url(repository)/settings/branches/@encodeRefName(branch)" class="btn btn-small btn-default">Edit</a>
+                </span>
+              </td></tr>
+              }
+            </table>
+          </div>
+
+        </div>
+      }
+    }
+  }
+}
--- a/src/main/twirl/gitbucket/core/settings/branchprotection.scala.html
+++ b/src/main/twirl/gitbucket/core/settings/branchprotection.scala.html
@@ -0,0 +1,112 @@
+@(repository: gitbucket.core.service.RepositoryService.RepositoryInfo,
+  branch: String,
+  protection: gitbucket.core.api.ApiBranchProtection,
+  knownContexts: Seq[String],
+  info: Option[Any])(implicit context: gitbucket.core.controller.Context)
+@import context._
+@import gitbucket.core.view.helpers._
+@import gitbucket.core.model.WebHook._
+@check(bool:Boolean)={@if(bool){ checked}}
+@html.main(s"Branch protection for ${branch}", Some(repository)){
+  @html.menu("settings", repository){
+    @menu("branches", repository){
+      @helper.html.information(info)
+        <div class="alert alert-info" style="display:none" id="saved-info">Branch protection options saved</div>
+        <form name="branchProtection" onsubmit="submitForm(event)"><div class="panel panel-default">
+          <div class="panel-heading">Branch protection for <b>@branch</b></div>
+          <div class="panel-body">
+
+            <div class="checkbox">
+              <label class="strong"><input type="checkbox" name="enabled" onclick="update()" @check(protection.enabled)>Protect this branch</label>
+              <p class="help-block">Disables force-pushes to this branch and prevents it from being deleted.</p>
+            </div>
+
+            <div class="checkbox js-enabled" style="display:none">
+              <label class="strong"><input type="checkbox" name="has_required_statuses" onclick="update()" @check(protection.status.enforcement_level.name!="off")>Require status checks to pass before merging</label>
+              <p class="help-block">Choose which status checks must pass before branches can be merged into test.
+              When enabled, commits must first be pushed to another branch, then merged or pushed directly to test after status checks have passed.</p>
+
+              <div class="js-has_required_statuses" style="display:none">
+                <div class="checkbox">
+                  <label class="strong"><input type="checkbox" name="enforce_for_admins" onclick="update()" @check(protection.status.enforcement_level.name=="everyone")>Include administrators</label>
+                  <p class="help-block">Enforce required status checks for repository administrators.</p>
+                </div>
+
+                <div class="panel panel-default">
+                  <div class="panel-heading">Status checks found in the last week for this repository</div>
+                  <div class="panel-body">
+                    @knownContexts.map{ br =>
+                      <div class="checkbox">
+                        <label>
+                          <input type="checkbox" name="contexts" value="@br" onclick="update()" @check(protection.status.contexts.find(_==br))>
+                          <span>@br</span>
+                        </label>
+                      </div>
+                    }
+                  </div>
+                </div>
+              </div>
+            </div>
+            <input class="btn btn-success" type="submit" value="Save changes" />
+          </div>
+        </div></form>
+    }
+  }
+}
+<script>
+function getValue(){
+  var v = {}, contexts=[];
+  $("input[type=checkbox]:checked").each(function(){
+    if(this.name === 'contexts'){
+      contexts.push(this.value);
+    }else{
+      v[this.name] = true;
+    }
+  });
+  if(v.enabled){
+    return {
+      enabled: true,
+      required_status_checks: {
+        enforcement_level: v.has_required_statuses ? ((v.enforce_for_admins ? 'everyone' : 'non_admins')) : 'off',
+        contexts: v.has_required_statuses ? contexts : []
+      }
+    };
+  }else{
+    return {
+      enabled: false,
+      required_status_checks: {
+        enforcement_level: "off",
+        contexts: []
+      }
+    };
+  }
+}
+function updateView(protection){
+  $('.js-enabled').toggle(protection.enabled);
+  $('.js-has_required_statuses').toggle(protection.required_status_checks.enforcement_level != 'off');
+}
+function update(){
+  var protection = getValue();
+  updateView(protection);
+}
+$(update);
+function submitForm(e){
+  e.stopPropagation();
+  e.preventDefault();
+  var protection = getValue();
+  $.ajax({
+    method:'PATCH',
+    url:'/api/v3/repos/@repository.owner/@repository.name/branches/@encodeRefName(branch)',
+    contentType: 'application/json',
+    dataType: 'json',
+    data:JSON.stringify({protection:protection}),
+    success:function(r){
+      $('#saved-info').show();
+    },
+    error:function(err){
+      console.log(err);
+      alert('update error');
+    }
+  });
+}
+</script>
--- a/src/main/twirl/gitbucket/core/settings/menu.scala.html
+++ b/src/main/twirl/gitbucket/core/settings/menu.scala.html
@@ -11,6 +11,11 @@
        <li@if(active=="collaborators"){ class="active"}>
          <a href="@url(repository)/settings/collaborators">Collaborators</a>
        </li>
+        @if(!repository.branchList.isEmpty){
+        <li@if(active=="branches"){ class="active"}>
+          <a href="@url(repository)/settings/branches">Branches</a>
+        </li>
+        }
        <li@if(active=="hooks"){ class="active"}>
          <a href="@url(repository)/settings/hooks">Service Hooks</a>
        </li>
--- a/src/main/twirl/gitbucket/core/settings/options.scala.html
+++ b/src/main/twirl/gitbucket/core/settings/options.scala.html
@@ -18,22 +18,6 @@
              <label for="description" class="strong">Description:</label>
              <input type="text" name="description" id="description" class="form-control" value="@repository.repository.description"/>
            </fieldset>
-            <fieldset class="margin form-group">
-              <label for="defaultBranch" class="strong">Default Branch:</label>
-              <select name="defaultBranch" id="defaultBranch"@if(repository.branchList.isEmpty){ disabled} class="form-control">
-                @if(repository.branchList.isEmpty){
-                  <option value="none" selected>No Branch</option>
-                } else {
-                  @repository.branchList.map { branch =>
-                    <option@if(branch==repository.repository.defaultBranch){ selected}>@branch</option>
-                  }
-                }
-              </select>
-              @if(repository.branchList.isEmpty){
-                <input type="hidden" name="defaultBranch" value="none"/>
-              }
-              <span class="error" id="error-defaultBranch"></span>
-            </fieldset>
            <fieldset class="margin">
              <label class="radio">
                <input type="radio" name="isPrivate" value="false"
--- a/src/main/webapp/assets/common/css/gitbucket.css
+++ b/src/main/webapp/assets/common/css/gitbucket.css
@@ -1408,13 +1408,43 @@ div.author-info div.committer {
  margin: -10px -10px 10px -10px;
 }
 .build-statuses .build-status-item{
-  padding: 10px 15px 10px 12px;
+  padding: 10px 15px 10px 64px;
  border-bottom: 1px solid #eee;
 }
 .build-statuses-list .build-status-item{
  background-color: #fafafa;
 }

+.merge-indicator{
+  float:left;
+  border-radius: 50%;
+  width: 30px;
+  height: 30px;
+  line-height: 30px;
+  text-align: center;
+  vertical-align: middle;
+  margin-right: 10px;
+}
+.merge-indicator-success{
+  background-color: #6cc644;
+}
+.merge-indicator-warning{
+  background-color: #cea61b;
+}
+.merge-indicator-alert{
+  background-color: #888;
+}
+.merge-indicator .octicon{
+  color: white;
+  font-size: 16px;
+  width: 15px;
+  height: 15px;
+}
+.merge-indicator-warning .octicon{
+  color: white;
+  font-size: 30px;
+}
+
 /****************************************************************************/
 /* Diff */
 /****************************************************************************/
--- a/src/test/scala/gitbucket/core/api/JsonFormatSpec.scala
+++ b/src/test/scala/gitbucket/core/api/JsonFormatSpec.scala
@@ -354,6 +354,16 @@ class JsonFormatSpec extends Specification {
  }"""


+  val apiBranchProtection = ApiBranchProtection(true, Some(ApiBranchProtection.Status(ApiBranchProtection.Everyone, Seq("continuous-integration/travis-ci"))))
+  val apiBranchProtectionJson = """{
+    "enabled": true,
+    "required_status_checks": {
+      "enforcement_level": "everyone",
+      "contexts": [
+        "continuous-integration/travis-ci"
+      ]
+    }
+}"""

  def beFormatted(json2Arg:String) = new Matcher[String] {
    def apply[S <: String](e: Expectable[S]) = {
@@ -411,5 +421,8 @@ class JsonFormatSpec extends Specification {
    "apiPullRequestReviewComment" in {
      JsonFormat(apiPullRequestReviewComment) must beFormatted(apiPullRequestReviewCommentJson)
    }
+    "apiBranchProtection" in {
+      JsonFormat(apiBranchProtection) must beFormatted(apiBranchProtectionJson)
+    }
  }
 }
--- a/src/test/scala/gitbucket/core/service/ProtectedBrancheServiceSpec.scala
+++ b/src/test/scala/gitbucket/core/service/ProtectedBrancheServiceSpec.scala
@@ -0,0 +1,170 @@
+package gitbucket.core.service
+
+import org.specs2.mutable.Specification
+import org.eclipse.jgit.transport.ReceiveCommand
+import org.eclipse.jgit.lib.ObjectId
+import gitbucket.core.model.CommitState
+import ProtectedBrancheService.ProtectedBranchInfo
+
+
+class ProtectedBrancheServiceSpec extends Specification with ServiceSpecBase with ProtectedBrancheService with CommitStatusService {
+  val now = new java.util.Date()
+  val sha = "0c77148632618b59b6f70004e3084002be2b8804"
+  val sha2 = "0c77148632618b59b6f70004e3084002be2b8805"
+  "getProtectedBranchInfo" should {
+    "empty is disabled" in {
+      withTestDB { implicit session =>
+        getProtectedBranchInfo("user1", "repo1", "branch") must_== ProtectedBranchInfo.disabled("user1", "repo1")
+      }
+    }
+    "enable and update and disable" in {
+      withTestDB { implicit session =>
+        generateNewUserWithDBRepository("user1", "repo1")
+        enableBranchProtection("user1", "repo1", "branch", false, Nil)
+        getProtectedBranchInfo("user1", "repo1", "branch") must_== ProtectedBranchInfo("user1", "repo1", true, Nil, false)
+        enableBranchProtection("user1", "repo1", "branch", true, Seq("hoge","huge"))
+        getProtectedBranchInfo("user1", "repo1", "branch") must_== ProtectedBranchInfo("user1", "repo1", true, Seq("hoge","huge"), true)
+        disableBranchProtection("user1", "repo1", "branch")
+        getProtectedBranchInfo("user1", "repo1", "branch") must_== ProtectedBranchInfo.disabled("user1", "repo1")
+      }
+    }
+    "empty contexts is no-include-administrators" in {
+      withTestDB { implicit session =>
+        generateNewUserWithDBRepository("user1", "repo1")
+        enableBranchProtection("user1", "repo1", "branch", false, Nil)
+        getProtectedBranchInfo("user1", "repo1", "branch").includeAdministrators must_== false
+        enableBranchProtection("user1", "repo1", "branch", true, Nil)
+        getProtectedBranchInfo("user1", "repo1", "branch").includeAdministrators must_== false
+      }
+    }
+    "getProtectedBranchList" in {
+      withTestDB { implicit session =>
+        generateNewUserWithDBRepository("user1", "repo1")
+        enableBranchProtection("user1", "repo1", "branch", false, Nil)
+        enableBranchProtection("user1", "repo1", "branch2", false, Seq("fuga"))
+        enableBranchProtection("user1", "repo1", "branch3", true, Seq("hoge"))
+        getProtectedBranchList("user1", "repo1").toSet must_== Set("branch", "branch2", "branch3")
+      }
+    }
+    "getBranchProtectedReason on force push from admin" in {
+      withTestDB { implicit session =>
+        val rc = new ReceiveCommand(ObjectId.fromString(sha), ObjectId.fromString(sha2), "refs/heads/branch", ReceiveCommand.Type.UPDATE_NONFASTFORWARD)
+        generateNewUserWithDBRepository("user1", "repo1")
+        getBranchProtectedReason("user1", "repo1", true, rc, "user1") must_== None
+        enableBranchProtection("user1", "repo1", "branch", false, Nil)
+        getBranchProtectedReason("user1", "repo1", true, rc, "user1") must_== Some("Cannot force-push to a protected branch")
+      }
+    }
+    "getBranchProtectedReason on force push from othre" in {
+      withTestDB { implicit session =>
+        val rc = new ReceiveCommand(ObjectId.fromString(sha), ObjectId.fromString(sha2), "refs/heads/branch", ReceiveCommand.Type.UPDATE_NONFASTFORWARD)
+        generateNewUserWithDBRepository("user1", "repo1")
+        getBranchProtectedReason("user1", "repo1", true, rc, "user2") must_== None
+        enableBranchProtection("user1", "repo1", "branch", false, Nil)
+        getBranchProtectedReason("user1", "repo1", true, rc, "user2") must_== Some("Cannot force-push to a protected branch")
+      }
+    }
+    "getBranchProtectedReason check status on push from othre" in {
+      withTestDB { implicit session =>
+        val rc = new ReceiveCommand(ObjectId.fromString(sha), ObjectId.fromString(sha2), "refs/heads/branch", ReceiveCommand.Type.UPDATE)
+        val user1 = generateNewUserWithDBRepository("user1", "repo1")
+        getBranchProtectedReason("user1", "repo1", false, rc, "user2") must_== None
+        enableBranchProtection("user1", "repo1", "branch", false, Seq("must"))
+        getBranchProtectedReason("user1", "repo1", false, rc, "user2") must_== Some("Required status check \"must\" is expected")
+        enableBranchProtection("user1", "repo1", "branch", false, Seq("must", "must2"))
+        getBranchProtectedReason("user1", "repo1", false, rc, "user2") must_== Some("2 of 2 required status checks are expected")
+        createCommitStatus("user1", "repo1", sha2, "context", CommitState.SUCCESS, None, None, now, user1)
+        getBranchProtectedReason("user1", "repo1", false, rc, "user2") must_== Some("2 of 2 required status checks are expected")
+        createCommitStatus("user1", "repo1", sha2, "must", CommitState.SUCCESS, None, None, now, user1)
+        getBranchProtectedReason("user1", "repo1", false, rc, "user2") must_== Some("Required status check \"must2\" is expected")
+        createCommitStatus("user1", "repo1", sha2, "must2", CommitState.SUCCESS, None, None, now, user1)
+        getBranchProtectedReason("user1", "repo1", false, rc, "user2") must_== None
+      }
+    }
+    "getBranchProtectedReason check status on push from admin" in {
+      withTestDB { implicit session =>
+        val rc = new ReceiveCommand(ObjectId.fromString(sha), ObjectId.fromString(sha2), "refs/heads/branch", ReceiveCommand.Type.UPDATE)
+        val user1 = generateNewUserWithDBRepository("user1", "repo1")
+        getBranchProtectedReason("user1", "repo1", false, rc, "user1") must_== None
+        enableBranchProtection("user1", "repo1", "branch", false, Seq("must"))
+        getBranchProtectedReason("user1", "repo1", false, rc, "user1") must_== None
+        enableBranchProtection("user1", "repo1", "branch", true, Seq("must"))
+        getBranchProtectedReason("user1", "repo1", false, rc, "user1") must_== Some("Required status check \"must\" is expected")
+        enableBranchProtection("user1", "repo1", "branch", false, Seq("must", "must2"))
+        getBranchProtectedReason("user1", "repo1", false, rc, "user1") must_== None
+        enableBranchProtection("user1", "repo1", "branch", true, Seq("must", "must2"))
+        getBranchProtectedReason("user1", "repo1", false, rc, "user1") must_== Some("2 of 2 required status checks are expected")
+        createCommitStatus("user1", "repo1", sha2, "context", CommitState.SUCCESS, None, None, now, user1)
+        getBranchProtectedReason("user1", "repo1", false, rc, "user1") must_== Some("2 of 2 required status checks are expected")
+        createCommitStatus("user1", "repo1", sha2, "must", CommitState.SUCCESS, None, None, now, user1)
+        getBranchProtectedReason("user1", "repo1", false, rc, "user1") must_== Some("Required status check \"must2\" is expected")
+        createCommitStatus("user1", "repo1", sha2, "must2", CommitState.SUCCESS, None, None, now, user1)
+        getBranchProtectedReason("user1", "repo1", false, rc, "user1") must_== None
+      }
+    }
+  }
+  "ProtectedBranchInfo" should {
+    "administrator is owner" in {
+      withTestDB { implicit session =>
+        generateNewUserWithDBRepository("user1", "repo1")
+        var x = ProtectedBranchInfo("user1", "repo1", true, Nil, false)
+        x.isAdministrator("user1") must_== true
+        x.isAdministrator("user2") must_== false
+      }
+    }
+    "administrator is manager" in {
+      withTestDB { implicit session =>
+        var x = ProtectedBranchInfo("grp1", "repo1", true, Nil, false)
+        x.createGroup("grp1", None)
+        generateNewAccount("user1")
+        generateNewAccount("user2")
+        generateNewAccount("user3")
+
+        x.updateGroupMembers("grp1", List("user1"->true, "user2"->false))
+        x.isAdministrator("user1") must_== true
+        x.isAdministrator("user2") must_== false
+        x.isAdministrator("user3") must_== false
+      }
+    }
+    "unSuccessedContexts" in {
+      withTestDB { implicit session =>
+        val user1 = generateNewUserWithDBRepository("user1", "repo1")
+        var x = ProtectedBranchInfo("user1", "repo1", true, List("must"), false)
+        x.unSuccessedContexts(sha) must_== Set("must")
+        createCommitStatus("user1", "repo1", sha, "context", CommitState.SUCCESS, None, None, now, user1)
+        x.unSuccessedContexts(sha) must_== Set("must")
+        createCommitStatus("user1", "repo1", sha, "must", CommitState.ERROR, None, None, now, user1)
+        x.unSuccessedContexts(sha) must_== Set("must")
+        createCommitStatus("user1", "repo1", sha, "must", CommitState.PENDING, None, None, now, user1)
+        x.unSuccessedContexts(sha) must_== Set("must")
+        createCommitStatus("user1", "repo1", sha, "must", CommitState.FAILURE, None, None, now, user1)
+        x.unSuccessedContexts(sha) must_== Set("must")
+        createCommitStatus("user1", "repo1", sha, "must", CommitState.SUCCESS, None, None, now, user1)
+        x.unSuccessedContexts(sha) must_== Set()
+      }
+    }
+    "unSuccessedContexts when empty" in {
+      withTestDB { implicit session =>
+        val user1 = generateNewUserWithDBRepository("user1", "repo1")
+        var x = ProtectedBranchInfo("user1", "repo1", true, Nil, false)
+        val sha = "0c77148632618b59b6f70004e3084002be2b8804"
+        x.unSuccessedContexts(sha) must_== Nil
+        createCommitStatus("user1", "repo1", sha, "context", CommitState.SUCCESS, None, None, now, user1)
+        x.unSuccessedContexts(sha) must_== Nil
+      }
+    }
+    "if disabled, needStatusCheck is false" in {
+      withTestDB { implicit session =>
+        ProtectedBranchInfo("user1", "repo1", false, Seq("must"), true).needStatusCheck("user1") must_== false
+      }
+    }
+    "needStatusCheck includeAdministrators" in {
+      withTestDB { implicit session =>
+        ProtectedBranchInfo("user1", "repo1", true, Seq("must"), false).needStatusCheck("user2") must_== true
+        ProtectedBranchInfo("user1", "repo1", true, Seq("must"), false).needStatusCheck("user1") must_== false
+        ProtectedBranchInfo("user1", "repo1", true, Seq("must"), true ).needStatusCheck("user2") must_== true
+        ProtectedBranchInfo("user1", "repo1", true, Seq("must"), true ).needStatusCheck("user1") must_== true
+      }
+    }
+  }
+}
--- a/src/test/scala/gitbucket/core/service/RepositoryServiceSpec.scala
+++ b/src/test/scala/gitbucket/core/service/RepositoryServiceSpec.scala
@@ -8,11 +8,11 @@ import org.specs2.mutable.Specification

 class RepositoryServiceSpec extends Specification with ServiceSpecBase with RepositoryService with AccountService{
  "RepositoryService" should {
-    "renameRepository can rename CommitState" in { withTestDB { implicit session =>
+    "renameRepository can rename CommitState, ProtectedBranches" in { withTestDB { implicit session =>
      val tester = generateNewAccount("tester")
      createRepository("repo","root",None,false)
-      val commitStatusService = new CommitStatusService{}
-      val id = commitStatusService.createCommitStatus(
+      val service = new CommitStatusService with ProtectedBrancheService{}
+      val id = service.createCommitStatus(
        userName    = "root",
        repositoryName = "repo",
        sha         = "0e97b8f59f7cdd709418bb59de53f741fd1c1bd7",
@@ -22,14 +22,20 @@ class RepositoryServiceSpec extends Specification with ServiceSpecBase with Repo
        description = Some("description"),
        creator     = tester,
        now         = new java.util.Date)
-      val org = commitStatusService.getCommitStatus("root","repo", id).get
+      service.enableBranchProtection("root", "repo", "branch", true, Seq("must1", "must2"))
+      var orgPbi = service.getProtectedBranchInfo("root", "repo", "branch")
+      val org = service.getCommitStatus("root","repo", id).get
+
      renameRepository("root","repo","tester","repo2")
-	  val neo = commitStatusService.getCommitStatus("tester","repo2", org.commitId, org.context).get
+
+	  val neo = service.getCommitStatus("tester","repo2", org.commitId, org.context).get
      neo must_==
        org.copy(
          commitStatusId=neo.commitStatusId,
          repositoryName="repo2",
          userName="tester")
+      service.getProtectedBranchInfo("tester", "repo2", "branch") must_==
+        orgPbi.copy(owner="tester", repository="repo2")
    }}
  }
 }