Class: SNMP::Open::FileReader

Inherits:
Object
  • Object
show all
Defined in:
lib/snmp/open/file_reader.rb

Overview

Test data source for SNMP::Open that reads from the filesystem instead of running SNMP commands. Expects a ‘walk’ directory to be present if #walk will be used, and a ‘get’ directory if #get will be used. Within each directory, files named according to the numeric OIDs to be used are expected to be present, containing the output of an snmpwalk or snmpget run over the given OID.

Produces warnings describing an snmpbulkwalk or snmpget command that could be used to generate a needed file, if the file is unavailable. Controlled by the ‘warnings` option.

Instance Method Summary collapse

Constructor Details

#initialize(directory, options = {}) ⇒ FileReader

Returns a new instance of FileReader.



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# File 'lib/snmp/open/file_reader.rb', line 16

def initialize(directory, options = {})
  @directory = directory
  @warnings = options.delete(:warnings)
  @command_generator =
    SNMP::Open::CommandReader.new(options.merge(host: '$OPTIONS'))
end

Instance Method Details

#capture(cmd, oid, _options = {}) ⇒ Object 



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# File 'lib/snmp/open/file_reader.rb', line 23

def capture(cmd, oid, _options = {})
  outfile = File.join(cmd.to_s, oid)
  File.read(File.join(@directory, outfile))
rescue Errno::ENOENT => err
  warn "#{@command_generator.cli(cmd, oid)} > #{outfile}" if @warnings
  raise err
end