89 lines
1.7 KiB
Ruby
89 lines
1.7 KiB
Ruby
#!/usr/bin/ruby
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require 'sbdb'
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require 'uuidtools'
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require 'logan'
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module LogAn
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class Loglines
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attr_reader :env, :rdb, :dbs
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def self.new *paras
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ret = obj = super( *paras)
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begin ret = yield obj
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ensure
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SBDB.raise_barrier &obj.method( :close)
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end if block_given?
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ret
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end
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def initialize env = nil
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env ||= 'logs'
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@env = if String === env
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Dir.mkdir env rescue Errno::EEXIST
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SBDB::Env.new env,
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log_config: SBDB::Env::LOG_IN_MEMORY | SBDB::Env::LOG_AUTO_REMOVE,
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flags: SBDB::CREATE | SBDB::Env::INIT_TXN | Bdb::DB_INIT_MPOOL
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else env
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end
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@rdb = @env[ 'rotates.db', :type => SBDB::Btree, :flags => SBDB::CREATE | SBDB::AUTO_COMMIT]
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@queue = @env[ "newids.queue", :type => SBDB::Queue, :flags => SBDB::CREATE | SBDB::AUTO_COMMIT, :re_len => 16]
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@dbs = {}
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self.hash_func = lambda {|k|
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[k.timestamp.to_i/60/60].pack 'N' # Hour-based rotation
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}
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end
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def close
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@env.close
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end
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def hash_func= exe
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hash_func &exe
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end
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def hash_func &exe
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@hash_func = exe if exe
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@hash_func
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end
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def hashing key
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@hash_func.call key
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end
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def db_name id
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hash = hashing id
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name = @rdb[ hash]
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if name
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name = UUIDTools::UUID.parse_raw name
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else
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name = UUIDTools::UUID.timestamp_create
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@rdb[ hash] = name.raw
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end
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name
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end
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def db name
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@env[ name.to_s, :type => SBDB::Btree, :flags => SBDB::CREATE | SBDB::AUTO_COMMIT]
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end
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def sync
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@dbs.each {|name, db| db.sync }
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@rdb.sync
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end
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def put val, sid = nil
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id = UUIDTools::UUID.timestamp_create
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dat = [sid || 0x10, val].pack 'Na*'
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name = db_name id
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db( name)[ id.raw] = dat
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end
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alias emit put
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def get key
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name = db_name id
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db( name)[ id.raw]
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end
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end
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end
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