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#
#
# 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.
#
# Shell commands module
module Shell
@@commands = {}
def self.commands
@@commands
end
@@command_groups = {}
def self.command_groups
@@command_groups
end
def self.load_command(name, group, aliases = [])
return if commands[name]
# Register command in the group
raise ArgumentError, "Unknown group: #{group}" unless command_groups[group]
command_groups[group][:commands] << name
# Load command
begin
require "shell/commands/#{name}"
klass_name = name.to_s.gsub(/(?:^|_)(.)/) { Regexp.last_match(1).upcase } # camelize
commands[name] = eval("Commands::#{klass_name}")
aliases.each do |an_alias|
commands[an_alias] = commands[name]
end
rescue => e
raise "Can't load hbase shell command: #{name}. Error: #{e}\n#{e.backtrace.join("\n")}"
end
end
def self.load_command_group(group, opts)
raise ArgumentError, "No :commands for group #{group}" unless opts[:commands]
command_groups[group] = {
commands: [],
command_names: opts[:commands],
full_name: opts[:full_name] || group,
comment: opts[:comment]
}
all_aliases = opts[:aliases] || {}
opts[:commands].each do |command|
aliases = all_aliases[command] || []
load_command(command, group, aliases)
end
end
#----------------------------------------------------------------------
# rubocop:disable Metrics/ClassLength
class Shell
attr_accessor :hbase
attr_accessor :interactive
alias interactive? interactive
@debug = false
attr_accessor :debug
def initialize(hbase, interactive = true)
self.hbase = hbase
self.interactive = interactive
end
# Returns Admin class from admin.rb
def admin
@admin ||= hbase.admin
end
def hbase_taskmonitor
@hbase_taskmonitor ||= hbase.taskmonitor
end
def hbase_table(name)
hbase.table(name, self)
end
def hbase_replication_admin
@hbase_replication_admin ||= hbase.replication_admin
end
def hbase_security_admin
@hbase_security_admin ||= hbase.security_admin
end
def hbase_visibility_labels_admin
@hbase_visibility_labels_admin ||= hbase.visibility_labels_admin
end
def hbase_quotas_admin
@hbase_quotas_admin ||= hbase.quotas_admin
end
def hbase_rsgroup_admin
@rsgroup_admin ||= hbase.rsgroup_admin
end
def export_commands(where)
::Shell.commands.keys.each do |cmd|
# here where is the IRB namespace
# this method just adds the call to the specified command
# which just references back to 'this' shell object
# a decently extensible way to add commands
where.send :instance_eval, <<-EOF
def #{cmd}(*args)
ret = @shell.command('#{cmd}', *args)
puts
return ret
end
EOF
end
end
def command_instance(command)
::Shell.commands[command.to_s].new(self)
end
# call the method 'command' on the specified command
def command(command, *args)
internal_command(command, :command, *args)
end
# call a specific internal method in the command instance
# command - name of the command to call
# method_name - name of the method on the command to call. Defaults to just 'command'
# args - to be passed to the named method
def internal_command(command, method_name = :command, *args)
command_instance(command).command_safe(debug, method_name, *args)
end
def print_banner
puts 'HBase Shell'
puts 'Use "help" to get list of supported commands.'
puts 'Use "exit" to quit this interactive shell.'
puts 'For Reference, please visit: http://hbase.apache.org/book.html#shell'
print 'Version '
command('version')
puts
end
def help_multi_command(command)
puts "Command: #{command}"
puts command_instance(command).help
puts
nil
end
def help_command(command)
puts command_instance(command).help
nil
end
def help_group(group_name)
group = ::Shell.command_groups[group_name.to_s]
group[:commands].sort.each { |cmd| help_multi_command(cmd) }
if group[:comment]
puts '-' * 80
puts
puts group[:comment]
puts
end
nil
end
def help(command = nil)
if command
return help_command(command) if ::Shell.commands[command.to_s]
return help_group(command) if ::Shell.command_groups[command.to_s]
puts "ERROR: Invalid command or command group name: #{command}"
puts
end
puts help_header
puts
puts 'COMMAND GROUPS:'
::Shell.command_groups.each do |name, group|
puts ' Group name: ' + name
puts ' Commands: ' + group[:command_names].sort.join(', ')
puts
end
unless command
puts 'SHELL USAGE:'
help_footer
end
nil
end
def help_header
"HBase Shell, version #{org.apache.hadoop.hbase.util.VersionInfo.getVersion}, " \
"r#{org.apache.hadoop.hbase.util.VersionInfo.getRevision}, " \
"#{org.apache.hadoop.hbase.util.VersionInfo.getDate}" + "\n" \
"Type 'help \"COMMAND\"', (e.g. 'help \"get\"' -- the quotes are necessary) for help on a specific command.\n" \
"Commands are grouped. Type 'help \"COMMAND_GROUP\"', (e.g. 'help \"general\"') for help on a command group."
end
def help_footer
puts <<-HERE
Quote all names in HBase Shell such as table and column names. Commas delimit
command parameters. Type <RETURN> after entering a command to run it.
Dictionaries of configuration used in the creation and alteration of tables are
Ruby Hashes. They look like this:
{'key1' => 'value1', 'key2' => 'value2', ...}
and are opened and closed with curley-braces. Key/values are delimited by the
'=>' character combination. Usually keys are predefined constants such as
NAME, VERSIONS, COMPRESSION, etc. Constants do not need to be quoted. Type
'Object.constants' to see a (messy) list of all constants in the environment.
If you are using binary keys or values and need to enter them in the shell, use
double-quote'd hexadecimal representation. For example:
hbase> get 't1', "key\\x03\\x3f\\xcd"
hbase> get 't1', "key\\003\\023\\011"
hbase> put 't1', "test\\xef\\xff", 'f1:', "\\x01\\x33\\x40"
The HBase shell is the (J)Ruby IRB with the above HBase-specific commands added.
For more on the HBase Shell, see http://hbase.apache.org/book.html
HERE
end
end
# rubocop:enable Metrics/ClassLength
end
# Load commands base class
require 'shell/commands'
# Load all commands
Shell.load_command_group(
'general',
full_name: 'GENERAL HBASE SHELL COMMANDS',
commands: %w[
status
version
table_help
whoami
processlist
]
)
Shell.load_command_group(
'ddl',
full_name: 'TABLES MANAGEMENT COMMANDS',
commands: %w[
alter
create
describe
disable
disable_all
is_disabled
drop
drop_all
enable
enable_all
is_enabled
exists
list
show_filters
alter_status
alter_async
get_table
locate_region
list_regions
clone_table_schema
],
aliases: {
'describe' => ['desc']
}
)
Shell.load_command_group(
'namespace',
full_name: 'NAMESPACE MANAGEMENT COMMANDS',
commands: %w[
create_namespace
drop_namespace
alter_namespace
describe_namespace
list_namespace
list_namespace_tables
]
)
Shell.load_command_group(
'dml',
full_name: 'DATA MANIPULATION COMMANDS',
commands: %w[
count
delete
deleteall
get
get_counter
incr
put
scan
truncate
truncate_preserve
append
get_splits
]
)
Shell.load_command_group(
'tools',
full_name: 'HBASE SURGERY TOOLS',
comment: "WARNING: Above commands are for 'experts'-only as misuse can damage an install",
commands: %w[
assign
balancer
balance_switch
balancer_enabled
normalize
normalizer_switch
normalizer_enabled
is_in_maintenance_mode
close_region
compact
compaction_switch
flush
major_compact
move
split
merge_region
unassign
zk_dump
wal_roll
catalogjanitor_run
catalogjanitor_switch
catalogjanitor_enabled
cleaner_chore_run
cleaner_chore_switch
cleaner_chore_enabled
compact_rs
compaction_state
trace
splitormerge_switch
splitormerge_enabled
clear_compaction_queues
list_deadservers
clear_deadservers
clear_block_cache
stop_master
stop_regionserver
rit
list_decommissioned_regionservers
decommission_regionservers
recommission_regionserver
],
# TODO: remove older hlog_roll command
aliases: {
'wal_roll' => ['hlog_roll']
}
)
Shell.load_command_group(
'replication',
full_name: 'CLUSTER REPLICATION TOOLS',
commands: %w[
add_peer
remove_peer
list_peers
enable_peer
disable_peer
set_peer_replicate_all
set_peer_serial
set_peer_namespaces
append_peer_namespaces
remove_peer_namespaces
set_peer_exclude_namespaces
append_peer_exclude_namespaces
remove_peer_exclude_namespaces
show_peer_tableCFs
set_peer_tableCFs
set_peer_exclude_tableCFs
append_peer_exclude_tableCFs
remove_peer_exclude_tableCFs
set_peer_bandwidth
list_replicated_tables
append_peer_tableCFs
remove_peer_tableCFs
enable_table_replication
disable_table_replication
get_peer_config
list_peer_configs
update_peer_config
transit_peer_sync_replication_state
]
)
Shell.load_command_group(
'snapshots',
full_name: 'CLUSTER SNAPSHOT TOOLS',
commands: %w[
snapshot
clone_snapshot
restore_snapshot
delete_snapshot
delete_all_snapshot
delete_table_snapshots
list_snapshots
list_table_snapshots
]
)
Shell.load_command_group(
'configuration',
full_name: 'ONLINE CONFIGURATION TOOLS',
commands: %w[
update_config
update_all_config
]
)
Shell.load_command_group(
'quotas',
full_name: 'CLUSTER QUOTAS TOOLS',
commands: %w[
set_quota
list_quotas
list_quota_table_sizes
list_quota_snapshots
list_snapshot_sizes
enable_rpc_throttle
disable_rpc_throttle
]
)
Shell.load_command_group(
'security',
full_name: 'SECURITY TOOLS',
comment: 'NOTE: Above commands are only applicable if running with the AccessController coprocessor',
commands: %w[
list_security_capabilities
grant
revoke
user_permission
]
)
Shell.load_command_group(
'procedures',
full_name: 'PROCEDURES & LOCKS MANAGEMENT',
commands: %w[
list_procedures
list_locks
]
)
Shell.load_command_group(
'visibility labels',
full_name: 'VISIBILITY LABEL TOOLS',
comment: 'NOTE: Above commands are only applicable if running with the VisibilityController coprocessor',
commands: %w[
add_labels
list_labels
set_auths
get_auths
clear_auths
set_visibility
]
)
Shell.load_command_group(
'rsgroup',
full_name: 'RSGroups',
comment: "NOTE: The rsgroup Coprocessor Endpoint must be enabled on the Master else commands fail with:
UnknownProtocolException: No registered Master Coprocessor Endpoint found for RSGroupAdminService",
commands: %w[
list_rsgroups
get_rsgroup
add_rsgroup
remove_rsgroup
balance_rsgroup
move_servers_rsgroup
move_tables_rsgroup
move_namespaces_rsgroup
move_servers_tables_rsgroup
move_servers_namespaces_rsgroup
get_server_rsgroup
get_table_rsgroup
remove_servers_rsgroup
]
)