Add "production" branch command

There already was a branch command for test purposes. This was adapted
for production use with git and hg.

scm-plugins/scm-git-plugin/src/main/java/sonia/scm/repository/spi/GitBranchCommand.java

@@ -0,0 +1,60 @@
+/**
+ * Copyright (c) 2010, Sebastian Sdorra
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. Neither the name of SCM-Manager; nor the names of its
+ *    contributors may be used to endorse or promote products derived from this
+ *    software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * http://bitbucket.org/sdorra/scm-manager
+ *
+ */
+
+
+package sonia.scm.repository.spi;
+
+import org.eclipse.jgit.api.Git;
+import org.eclipse.jgit.api.errors.GitAPIException;
+import org.eclipse.jgit.lib.Ref;
+import sonia.scm.repository.Branch;
+import sonia.scm.repository.GitUtil;
+import sonia.scm.repository.InternalRepositoryException;
+import sonia.scm.repository.Repository;
+
+import java.io.IOException;
+
+public class GitBranchCommand extends AbstractGitCommand implements BranchCommand {
+
+  GitBranchCommand(GitContext context, Repository repository) {
+    super(context, repository);
+  }
+
+  @Override
+  public Branch branch(String name) throws IOException {
+    try (Git git = new Git(open())) {
+      Ref ref = git.branchCreate().setName(name).call();
+      return Branch.normalBranch(name, GitUtil.getId(ref.getObjectId()));
+    } catch (GitAPIException ex) {
+      throw new InternalRepositoryException(repository, "could not create branch " + name, ex);
+    }
+  }
+}

scm-plugins/scm-git-plugin/src/main/java/sonia/scm/repository/spi/GitRepositoryServiceProvider.java

@@ -120,6 +120,18 @@ public class GitRepositoryServiceProvider extends RepositoryServiceProvider
     return new GitBranchesCommand(context, repository);
   }
 
+  /**
+   * Method description
+   *
+   *
+   * @return
+   */
+  @Override
+  public BranchCommand getBranchCommand()
+  {
+    return new GitBranchCommand(context, repository);
+  }
+
   /**
    * Method description
    *

scm-plugins/scm-git-plugin/src/test/java/sonia/scm/repository/spi/GitBranchCommandTest.java

@@ -0,0 +1,27 @@
+package sonia.scm.repository.spi;
+
+import org.assertj.core.api.Assertions;
+import org.junit.Test;
+import sonia.scm.repository.Branch;
+
+import java.io.IOException;
+import java.util.List;
+
+
+public class GitBranchCommandTest extends AbstractGitCommandTestBase {
+
+  @Test
+  public void shouldCreateBranch() throws IOException {
+    GitContext context = createContext();
+
+    Assertions.assertThat(readBranches(context)).filteredOn(b -> b.getName().equals("new_branch")).isEmpty();
+
+    new GitBranchCommand(context, repository).branch("new_branch");
+
+    Assertions.assertThat(readBranches(context)).filteredOn(b -> b.getName().equals("new_branch")).isNotEmpty();
+  }
+
+  private List<Branch> readBranches(GitContext context) throws IOException {
+    return new GitBranchesCommand(context, repository).getBranches();
+  }
+}