From 91756d7f796311269154110ca6967eea32d7bab0 Mon Sep 17 00:00:00 2001
From: Enis Soztutar <enis@apache.org>
Date: Fri, 11 May 2018 14:32:13 +0200
Subject: [PATCH] HBASE-16191 Add stop_regionserver and stop_master to shell

Amending-Author: Peter Somogyi <psomogyi@apache.org>
---
 hbase-shell/src/main/ruby/.rubocop.yml        |  5 +++
 hbase-shell/src/main/ruby/hbase/admin.rb      | 10 +++++
 hbase-shell/src/main/ruby/shell.rb            |  2 +
 .../main/ruby/shell/commands/stop_master.rb   | 38 ++++++++++++++++++
 .../ruby/shell/commands/stop_regionserver.rb  | 40 +++++++++++++++++++
 5 files changed, 95 insertions(+)
 create mode 100644 hbase-shell/src/main/ruby/.rubocop.yml
 create mode 100644 hbase-shell/src/main/ruby/shell/commands/stop_master.rb
 create mode 100644 hbase-shell/src/main/ruby/shell/commands/stop_regionserver.rb

diff --git a/hbase-shell/src/main/ruby/.rubocop.yml b/hbase-shell/src/main/ruby/.rubocop.yml
new file mode 100644
index 00000000000..7b041387170
--- /dev/null
+++ b/hbase-shell/src/main/ruby/.rubocop.yml
@@ -0,0 +1,5 @@
+Naming/HeredocDelimiterNaming:
+  Enabled: false
+
+Layout/IndentHeredoc:
+  Enabled: false
\ No newline at end of file
diff --git a/hbase-shell/src/main/ruby/hbase/admin.rb b/hbase-shell/src/main/ruby/hbase/admin.rb
index cb57c4cf97c..c385d3dabf6 100644
--- a/hbase-shell/src/main/ruby/hbase/admin.rb
+++ b/hbase-shell/src/main/ruby/hbase/admin.rb
@@ -1309,6 +1309,16 @@ module Hbase
                               TableName.valueOf(new_table_name),
                               preserve_splits)
     end
+
+    # Stop the active Master
+    def stop_master
+      @admin.stopMaster
+    end
+
+    # Stop the given RegionServer
+    def stop_regionserver(hostport)
+      @admin.stopRegionServer(hostport)
+    end
   end
   # rubocop:enable Metrics/ClassLength
 end
diff --git a/hbase-shell/src/main/ruby/shell.rb b/hbase-shell/src/main/ruby/shell.rb
index ab07a79b985..9a796587b6b 100644
--- a/hbase-shell/src/main/ruby/shell.rb
+++ b/hbase-shell/src/main/ruby/shell.rb
@@ -357,6 +357,8 @@ Shell.load_command_group(
     list_deadservers
     clear_deadservers
     clear_block_cache
+    stop_master
+    stop_regionserver
   ],
   # TODO: remove older hlog_roll command
   aliases: {
diff --git a/hbase-shell/src/main/ruby/shell/commands/stop_master.rb b/hbase-shell/src/main/ruby/shell/commands/stop_master.rb
new file mode 100644
index 00000000000..45a2b1121a6
--- /dev/null
+++ b/hbase-shell/src/main/ruby/shell/commands/stop_master.rb
@@ -0,0 +1,38 @@
+#
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+module Shell
+  module Commands
+    # Stop active Master
+    class StopMaster < Command
+      def help
+        <<-EOF
+Stop active Master. For experts only.
+Examples:
+
+  hbase> stop_master
+EOF
+      end
+
+      def command
+        admin.stop_master
+      end
+    end
+  end
+end
diff --git a/hbase-shell/src/main/ruby/shell/commands/stop_regionserver.rb b/hbase-shell/src/main/ruby/shell/commands/stop_regionserver.rb
new file mode 100644
index 00000000000..127088d4365
--- /dev/null
+++ b/hbase-shell/src/main/ruby/shell/commands/stop_regionserver.rb
@@ -0,0 +1,40 @@
+#
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+module Shell
+  module Commands
+    # Stop a RegionServer
+    class StopRegionserver < Command
+      def help
+        <<-EOF
+Stop a RegionServer. For experts only.
+Consider using graceful_stop.sh script instead!
+
+Examples:
+
+  hbase> stop_regionserver 'hostname:port'
+EOF
+      end
+
+      def command(hostport)
+        admin.stop_regionserver(hostport)
+      end
+    end
+  end
+end