hbase-ruby.shell.commands.describe.rb Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of hbase-sdk-shell_1.2 Show documentation

The newest version!

#
#
# 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
    class Describe < Command
      def help
        return <<-EOF
Describe the named table. For example:
  hbase> describe 't1'
  hbase> describe 'ns1:t1'

Alternatively, you can use the abbreviated 'desc' for the same thing.
  hbase> desc 't1'
  hbase> desc 'ns1:t1'
EOF
      end

      def command(table)
        now = Time.now

        column_families = admin.get_column_families(table)

        formatter.header(["Table " + table.to_s + " is " + if admin.enabled?(table) then "ENABLED" else "DISABLED" end])
        formatter.row([table.to_s + admin.get_table_attributes(table)], true)
        formatter.header(["COLUMN FAMILIES DESCRIPTION"])
        column_families.each do |column_family|
          formatter.row([ column_family.to_s ], true)
        end
        formatter.footer(now)
      end
    end
  end
end