Class: Irc::DBTree

Inherits:
Object show all
Defined in:
lib/rbot/registry/tc.rb,
lib/rbot/registry/bdb.rb

Overview

DBTree is a BTree equivalent of DBHash, with case insensitive lookups.

Constant Summary collapse

@@env = 
nil
@@lg_max =

TODO: make this customizable Note that it must be at least four times lg_bsize

8*1024*1024

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(bot, key, absfilename = false) ⇒ DBTree

absfilename

use key as an actual filename, don’t prepend the bot’s config path and don’t append “.db”



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# File 'lib/rbot/registry/tc.rb', line 107

def initialize(bot, key, absfilename=false)
  @bot = bot
  @key = key

  relfilename = @bot.path key
  relfilename << '.tdb'

  if absfilename && File.exist?(key)
    # db already exists, use it
    @db = DBTree.open_db(key)
  elsif absfilename
    # create empty db
    @db = DBTree.create_db(key)
  elsif File.exist? relfilename
    # db already exists, use it
    @db = DBTree.open_db relfilename
  else
    # create empty db
    @db = DBTree.create_db relfilename
  end
  oldbasename = (absfilename ? key : relfilename).gsub(/\.tdb$/, ".db")
  if File.exists? oldbasename and defined? BDB
    # upgrading
    warning "Upgrading old database #{oldbasename}..."
    oldb = ::BDB::Btree.open(oldbasename, nil, "r", 0600)
    oldb.each_key do |k|
      @db.outlist k
      @db.putlist k, (oldb.duplicates(k, false))
    end
    oldb.close
    File.rename oldbasename, oldbasename+".bak"
  end
  @db
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method, *args, &block) ⇒ Object 



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# File 'lib/rbot/registry/tc.rb', line 142

def method_missing(method, *args, &block)
  return @db.send(method, *args, &block)
end

Class Method Details

.cleanup_env ⇒ Object 



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# File 'lib/rbot/registry/tc.rb', line 170

def DBTree.cleanup_env()
  # no-op
end

.cleanup_logs ⇒ Object 



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# File 'lib/rbot/registry/tc.rb', line 162

def DBTree.cleanup_logs()
  # no-op
end

.create_db(name) ⇒ Object 



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# File 'lib/rbot/registry/tc.rb', line 146

def DBTree.create_db(name)
  debug "DBTree: creating empty db #{name}"
  db = TokyoCabinet::CIBDB.new
  res = db.open(name, TokyoCabinet::CIBDB::OREADER | TokyoCabinet::CIBDB::OCREAT | TokyoCabinet::CIBDB::OWRITER)
   warning "DBTree: creating empty db #{name}: #{db.errmsg(db.ecode) unless res}"
  return db
end

.open_db(name) ⇒ Object 



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# File 'lib/rbot/registry/tc.rb', line 154

def DBTree.open_db(name)
  debug "DBTree: opening existing db #{name}"
  db = TokyoCabinet::CIBDB.new
  res = db.open(name, TokyoCabinet::CIBDB::OREADER | TokyoCabinet::CIBDB::OWRITER)
   warning "DBTree:opening db #{name}: #{db.errmsg(db.ecode) unless res}"
  return db
end

.stats ⇒ Object 



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# File 'lib/rbot/registry/tc.rb', line 166

def DBTree.stats()
  # no-op
end