1.4.hbase-ruby.shell.commands.processlist.rb Maven / Gradle / Ivy

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#
# Copyright 2010 The Apache Software Foundation
#
# Licensed to the Apache Software Foundation (ASF) under one
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# 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
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# Unless required by applicable law or agreed to in writing, software
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module Shell
  module Commands
    class Processlist < Command
      def help
        return <<-EOF
Show regionserver task list.

  hbase> processlist
  hbase> processlist 'all'
  hbase> processlist 'general'
  hbase> processlist 'handler'
  hbase> processlist 'rpc'
  hbase> processlist 'operation'
  hbase> processlist 'all','host187.example.com'
  hbase> processlist 'all','host187.example.com,16020'  
  hbase> processlist 'all','host187.example.com,16020,1289493121758'

EOF
      end

      def command(*args)
        
        if ['all','general','handler','rpc','operation'].include? args[0]
          # if the first argument is a valid filter specifier, use it as such
          filter = args[0]
          hosts = args[1,args.length]
        else
          # otherwise, treat all arguments as host addresses by default
          filter = 'general'
          hosts = args
        end
        
        hosts = admin.getServerNames(hosts)

        if hosts == nil
          puts "No regionservers available."
        else
          taskmonitor.tasks(filter,hosts)
        end
        
      end

    end
  end
end