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require 'traject/line_writer'
# The Traject::DebugWriter produces a simple, human-readable output format that's
# also amenable to simple computer processing (e.g., with a simple grep).
# It's the output format used when you pass the --debug-mode switch to traject on the command line.
#
# Output format is three columns: id, output field, values (multiple
# values seperated by '|'), and looks something like:
#
# 000001580 edition [1st ed.]
# 000001580 format Book | Online | Print
# 000001580 geo Great Britain
# 000001580 id 000001580
# 000001580 isbn 0631126902
#
# ## Settings
#
# * 'output_file' -- the name of the file to output to (command line -o shortcut).
# * 'output_stream' -- alternately, the IO stream
# * 'debug_writer.idfield' -- the solr field from which to pull the record ID (default: 'id')
# * 'debug_writer.format' -- How to format the id/solr field/values (default: '%-12s %-25s %s')
#
# By default, with neither output_file nor output_stream provided, writes to stdout, which
# can be useful for debugging diagnosis.
#
# ## Example configuration file
#
# require 'traject/debug_writer'
#
# settings do
# provide "writer_class_name", "Traject::DebugWriter"
# provide "output_file", "out.txt"
# end
class Traject::DebugWriter < Traject::LineWriter
DEFAULT_FORMAT = '%-12s %-25s %s'
DEFAULT_IDFIELD = 'id'
def serialize(context)
idfield = settings["debug_writer.idfield"] || DEFAULT_IDFIELD
format = settings['debug_writer.format'] || DEFAULT_FORMAT
h = context.output_hash
lines = h.keys.sort.map {|k| format % [h[idfield].first, k, h[k].join(' | ')] }
lines.push "\n"
lines.join("\n")
end
end
Version data entries
21 entries across 21 versions & 1 rubygems