Class: Flydata::Command::Sync

Inherits:
Base
  • Object
show all
Includes:
Helpers
Defined in:
lib/flydata/command/sync.rb

Direct Known Subclasses

Mysql, Mysqlbinlog, Mysqldump, Psql

Constant Summary collapse

RUN_PROFILE = 
false
INSERT_PROGRESS_INTERVAL = 
1000
SERVER_DATA_PROCESSING_TIMEOUT =

seconds

3600
STATUS_START =

for dump.pos file

'START'
STATUS_PARSING =

only :source_pos is available at the begining of parse

'PARSING'
STATUS_PARSED =

the value is different from the constant name on purpose for backward compatibility.

'WAITING'
STATUS_COMPLETE = 
'COMPLETE'

Constants included from Helpers

Helpers::UNIT_PREFIX

Instance Attribute Summary collapse

Attributes inherited from Base

#opts

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Helpers

as_size, development?, env_mode, env_suffix, flydata_api_host_file, flydata_conf_file, flydata_version, format_menu_list, retry_on, to_command_class, usage_text

Methods inherited from Base

#ask_input_table_name, #ask_yes_no, #choose_one, #dashboard_url, #flydata, #initialize, #newline, #redshift_console_url, #register_crontab, #retrieve_data_entries, #separator, #show_purpose_name, #source

Methods included from ExclusiveRunnable

included

Methods included from Flydata::CommandLoggable

#before_logging, #log_error_stderr, #log_info_stdout, #log_warn_stderr

Constructor Details

This class inherits a constructor from Flydata::Command::Base

Instance Attribute Details

#ddl_tables ⇒ Object (readonly)

true if full initial sync



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# File 'lib/flydata/command/sync.rb', line 42

def ddl_tables
  @ddl_tables
end

#full_initial_sync ⇒ Object (readonly)

true if full initial sync



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# File 'lib/flydata/command/sync.rb', line 42

def full_initial_sync
  @full_initial_sync
end

#full_tables ⇒ Object (readonly)

true if full initial sync



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# File 'lib/flydata/command/sync.rb', line 42

def full_tables
  @full_tables
end

#input_tables ⇒ Object (readonly)

true if full initial sync



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# File 'lib/flydata/command/sync.rb', line 42

def input_tables
  @input_tables
end

#new_tables ⇒ Object (readonly)

true if full initial sync



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# File 'lib/flydata/command/sync.rb', line 42

def new_tables
  @new_tables
end

Class Method Details

.slop ⇒ Object

Command: flydata sync

- Arguments



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# File 'lib/flydata/command/sync.rb', line 53

def self.slop
  Slop.new do
    on 'c', 'skip-cleanup', 'Skip server cleanup'
    on 'f', 'skip-flush', 'Skip server flush'
    on 'y', 'yes', 'Skip command prompt assuming yes to all questions.  Use this for batch operation.'
    on 'd', 'dump-file', 'Save dump result into a file.'
    on 's', 'dump-stream', 'Stream dump result to a pipe instead of saving dump file. It might cause timeout error if db size is larger than 10GB.'
    on 'n', 'no-flydata-start', 'Don\'t start the flydata agent after initial sync.'
    #TODO : This option is temp! Should remove soon.
    on 'ff', 'Skip checking query queue and flush'
  end
end

.slop_flush ⇒ Object

Command: flydata sync:flush

- Arguments



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# File 'lib/flydata/command/sync.rb', line 83

def self.slop_flush
  Slop.new do
    on 'f', 'skip-flush', 'Skip server flush'
    on 'y', 'yes', 'Skip command prompt assuming yes to all questions.  Use this for batch operation.'
    on 'force-run', 'Run forcefully, ignoring exclusive run info'
  end
end

.slop_generate_table_ddl ⇒ Object

Command: flydata sync:generate_table_ddl

- Arguments



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# File 'lib/flydata/command/sync.rb', line 238

def self.slop_generate_table_ddl
  Slop.new do
    on 'c', 'ctl-only', 'Only generate FlyData Control definitions'
    on 'y', 'yes', 'Skip command prompt assuming yes to all questions.  Use this for batch operation.'
    on 's', 'skip-primary-key-check', 'Skip primary key check when generating DDL'
    on 'all-tables', 'Generate all table schema'
    on 'drop-append-only', 'Include queries to drop append-only tables'
    #no 'force-run' option. because stdout is often redirected to a file.
  end
end

.slop_repair ⇒ Object

Command: flydata sync:repair

- Arguments



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# File 'lib/flydata/command/sync.rb', line 266

def self.slop_repair
  Slop.new do
    on 'y', 'yes', 'Skip command prompt assuming yes to all questions.  Use this for batch operation.'
    on 'force-run', 'Run forcefully, ignoring exclusive run info'
  end
end

.slop_reset ⇒ Object

Command: flydata sync:reset

- Arguments



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# File 'lib/flydata/command/sync.rb', line 111

def self.slop_reset
  Slop.new do
    on 'c', 'client', 'Resets client only.'
    on 'y', 'yes', 'Skip command prompt assuming yes to all questions.  Use this for batch operation.'
    on 'a', 'all', 'Resets Sync for all tables'
    on 'i', 'init', 'Resets unfinished initial sync'
    on 'force-run', 'Run forcefully, ignoring exclusive run info'
    on 'f', 'force', "Resets tables including append only tables.  Use this option only when you want to stop sync for the append only table permanently."
  end
end

Instance Method Details

#check(options = {}) ⇒ Object

Command: flydata sync:check

- Entry method



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# File 'lib/flydata/command/sync.rb', line 282

def check(options = {})
  context = source.source_pos
  status, corrupt_master_pos_files, pos_mismatch_tables, gap_tables =
    _check(context, options)

  if status.include? :OK
    message = "\nNo errors are found.  Sync is clean.\n"
  else
    message = "\nFollowing errors are found.\n"

    if status.include? :STUCK_AT_PROCESS
      message += " - Data is stuck while processing\n"
    end
    if status.include? :STUCK_AT_UPLOAD
      message += " - Data is stuck while uploading\n"
    end
    if status.include? :ABNORMAL_SHUTDOWN
      message += " - Agent was not shut down correctly\n"
    end
    if status.include? :CORRUPT_MASTER_POS
      message += " - Master source position is corrupted\n"
    end
    if gap_tables
      message += " - Sync data is missing for the following table(s)\n"
      gap_tables.each do |bt|
        message += "     table:#{bt[:table]}\n"
      end
      message += "\n"
    end
    if pos_mismatch_tables
      message += " - Incorrect table position(s)\n"
      pos_mismatch_tables.each do |bt|
        message += "     table:#{bt[:table]}, agent position:#{bt[:agent_seq] ? bt[:agent_seq] : '(missing)'}, server position:#{bt[:server_seq]}\n"
      end
      message += "\n"
    end
  end
  log_info_stdout message
end

#compat_check ⇒ Object

Command: flydata sync:compat_check

- Entry method



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# File 'lib/flydata/command/sync.rb', line 325

def compat_check
  context = source.sync_generate_table_ddl(flydata.data_port.get, opts)
  context.run_compatibility_check
end

#flush(*tables) ⇒ Object

Command: flydata sync:flush

- Entry method



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# File 'lib/flydata/command/sync.rb', line 93

def flush(*tables)
  begin
    flush_buffer_and_stop(tables, skip_flush: opts.skip_flush?)
  rescue ServerDataProcessingTimeout => e
    ee = ServerDataProcessingTimeout.new("Delayed Data Processing")
    ee.description = <<EOS
  Data processing is taking more than expected.  Please contact [email protected] to check the system status.

EOS
    ee.set_backtrace e.backtrace
    raise ee
  end
  log_info_stdout("Buffers have been flushed and the sender process has been stopped.")
end

#generate_table_ddl(*tables) ⇒ Object

Command: flydata sync:generate_table_ddl

- Entry method



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# File 'lib/flydata/command/sync.rb', line 251

def generate_table_ddl(*tables)
  # Compatibility check
  de = data_entry
  context = source.sync_generate_table_ddl(flydata.data_port.get, opts)
  context.run_compatibility_check

  # Set instance variables
  set_current_tables(tables, include_all_tables: true)

  do_generate_table_ddl(context, de)
end

#repair ⇒ Object

Command: flydata sync:repair

- Entry method



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# File 'lib/flydata/command/sync.rb', line 275

def repair
  _repair
end

#reset(*tables) ⇒ Object

Command: flydata sync:reset

- Entry method



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# File 'lib/flydata/command/sync.rb', line 124

def reset(*tables)

  if tables.empty? && !opts[:all] && !opts[:init]
    log_info_stdout <<EOS
ERROR!  Argument or option must be specified.

  To reset all tables:              flydata sync:reset --all
  To reset specific tables:         flydata sync:reset table1 table2 ...
  To reset unfinished initial sync: flydata sync:reset --init
EOS
    return
  end

  # Set instance variables
  reset_init = opts[:init]
  if opts[:all]
    tables = []
    reset_init = false
  end
  sync_resumed = set_current_tables(tables, resume: !opts[:all])
  target_tables = opts[:all] ? @full_tables : @input_tables
  target_append_only_tables = target_tables & @append_only_tables
  target_full_sync_tables = target_tables - @append_only_tables

  return if !sync_resumed && reset_init

  message = ''
  if sync_resumed && !tables.empty?
    log_info_stdout <<EOS
ERROR!  You cannot reset tables because the previous initial sync has not been completed.  Reset the unfinished initial sync first with the following command:

  flydata sync:reset --init

EOS
    return
  end

  if target_append_only_tables.size > 0 && !opts[:force]
    log_info_stdout <<EOS
ERROR!  Reset failed because it includes append only table(s).  Sync can no longer continue if you reset an append only table.

  Append only table(s): #{target_append_only_tables.join(", ")}

If you really want to reset append-only tables, use '--force' option.

EOS

    log_info_stdout <<EOS unless target_full_sync_tables.empty?
To reset all tables except for append only tables, run the following command.

  flydata sync:reset #{target_full_sync_tables.join(" ")}

EOS
    return
  end

  # Flush client buffer
  msg_tables = @input_tables.empty? ? '' : " for these tables : #{@input_tables.join(" ")}"
  msg_sync_type = sync_resumed ? "the current initial sync" : "the current sync"
  show_purpose_name
  return unless ask_yes_no("This resets #{msg_sync_type}#{msg_tables}.  Are you sure?")
  sender = Flydata::Command::Sender.new
  sender.flush_client_buffer # TODO We should rather delete buffer files
  sender.stop

  begin
    wait_for_server_buffer(timeout: SERVER_DATA_PROCESSING_TIMEOUT, tables: target_tables_for_api)
  rescue ServerDataProcessingTimeout => e
    ee = ServerDataProcessingTimeout.new("Delayed Data Processing")
    ee.description = <<EOS
  Data processing is taking more than expected.  Please contact [email protected] to check the system status.
  Once checked, you can continue sync reset with the following command

    flydata sync:reset #{tables.empty? ? '' : tables.join(" ")}

EOS
    ee.set_backtrace e.backtrace
    raise ee
  end

  # Cleanup tables on server
  de = data_entry
  cleanup_sync_server(de, @input_tables) unless opts.client?
  sync_fm = create_sync_file_manager(de)

  # Delete local files
  sync_fm.delete_dump_files
  sync_fm.delete_table_control_files(*@input_tables)

  new_tables_after_reset = @unsynced_tables + @input_tables
  if @input_tables.empty? or @full_tables.empty? or @full_tables.all?{|ft| new_tables_after_reset.include?(ft)}
    sync_fm.delete_master_position_files
  end
  sync_fm.close
  log_info_stdout("Reset completed successfully.")
end

#run(*tables) ⇒ Object

Command: flydata sync

- Entry method



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# File 'lib/flydata/command/sync.rb', line 68

def run(*tables)
  raise "Command 'flydata sync' has been deprecated.  Use 'flydata start' instead."
end

#skip ⇒ Object

Depricated Command: flydata sync:skip skip initial sync



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# File 'lib/flydata/command/sync.rb', line 224

def skip
  de = data_entry
  sync_fm = create_sync_file_manager(de)
  source_pos_path = sync_fm.source_pos_path
  sync_fm.close
  `touch #{source_pos_path}`
  log_info_stdout("Created an empty source position file.")
  log_info_stdout("-> #{source_pos_path}")
  log_info_stdout("Run 'flydata start' to start continuous sync.")
end

#try_initial_sync(options) ⇒ Object

Public method

- Called from Sender#start/restart



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# File 'lib/flydata/command/sync.rb', line 75

def try_initial_sync(options)
  handle_initial_sync(nil, options) if source.sync.supported?
rescue Source::UnsupportedSourceError
  return
end