Module: Nais::Log::Parser

Defined in:
lib/nais/log/parser.rb,
lib/nais/log/parser/version.rb

Constant Summary collapse

VERSION = 
"0.32.2"

Class Method Summary collapse

Class Method Details

.flatten_hash(hash, path = "", keep = nil) ⇒ Object 



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# File 'lib/nais/log/parser.rb', line 12

def Parser.flatten_hash(hash, path = "", keep = nil)
  hash.each_with_object({}) do |(k, v), ret|
    if path == "" && !keep.nil? && k =~ keep
      ret[k] = v
    else
      key = (path + k.to_s).tr('.','_')
      if v.is_a? Hash
        ret.merge! Parser.flatten_hash(v, key.to_s + "_")
      else
        ret[key] = v
      end
    end
  end
end

.get_keywords(str, regex) ⇒ Object 



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# File 'lib/nais/log/parser.rb', line 27

def Parser.get_keywords(str, regex)
  keywords = str.scan(regex)
  if keywords.any?
    keywords.uniq!
    keywords.size == 1 ? keywords.first : keywords
  end
end

.loglevel_from_dns_response(response) ⇒ Object 



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# File 'lib/nais/log/parser.rb', line 390

def Parser.loglevel_from_dns_response(response)
  return case response
         when 'NOERROR'
           'Info'
         when 'NODATA'
           'Warning'
         when 'FORMERR'
           'Warning'
         when 'SERVFAIL'
           'Error'
         when 'NXDOMAIN'
           'Warning'
         when 'NOTIMP'
           'Warning'
         when 'REFUSED'
           'Warning'
         end
end

.loglevel_from_http_response(response) ⇒ Object 



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# File 'lib/nais/log/parser.rb', line 409

def Parser.loglevel_from_http_response(response)
  return case response.to_s[0,1]
         when '2','3'
           'Info'
         when '4'
           'Warning'
         when '5'
           'Error'
         end
end

.merge_json_field(record, field) ⇒ Object 



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# File 'lib/nais/log/parser.rb', line 35

def Parser.merge_json_field(record, field)
  if record.has_key?(field)
    value = record[field].strip
    if value[0].eql?('{') && value[-1].eql?('}')
      begin
        record = JSON.parse(value).merge(record)
        record.delete(field)
      rescue JSON::ParserError=>e
      end
    end
  end
  record
end

.parse_accesslog(str) ⇒ Object 



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# File 'lib/nais/log/parser.rb', line 229

def Parser.parse_accesslog(str)
  if !str.nil? && m = str.match(/^(\S+) +(?:(\S+) )?(\S+) \[([^\]]+)\] \"([^\"]*)\" (\S+) (\S+)(.*)/)
    r = {}
    r['remote_ip'] = m[1]
    r['ident'] = m[2] unless (m[2].nil? || m[2] == '-')
    r['user'] = m[3] unless m[3] == '-'
    r['timestamp'] = Time.strptime(m[4], "%d/%b/%Y:%H:%M:%S %Z").iso8601
    r['request'] = m[5]
    r['response_code'] = m[6] unless m[6] == '-'
    r['content_length'] = m[7] unless m[7] == '-'
    ext = m[8] unless m[8] == ''
    return r, ext
  else
    return nil
  end
end

.parse_accesslog_with_processing_time(str) ⇒ Object 



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# File 'lib/nais/log/parser.rb', line 246

def Parser.parse_accesslog_with_processing_time(str)
  r,ext = Parser.parse_accesslog(str)
  if !ext.nil? && m = ext.match(/^\s+(?:\"?-\"?|([0-9.]+)(?:[µm]?s))?$/u)
    r['processing_time'] = m[1] unless m[1].nil?
  end
  return r
end

.parse_accesslog_with_referer_useragent(str) ⇒ Object 



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# File 'lib/nais/log/parser.rb', line 254

def Parser.parse_accesslog_with_referer_useragent(str)
  r,ext = Parser.parse_accesslog(str)
  if !ext.nil? && m = ext.match(/^\s+\"([^\"]+)\" \"([^\"]+)\"$/)
    r['referer'] = m[1] unless m[1] == '-'
    r['user_agent'] = m[2] unless m[2] == '-'
  end
  return r
end

.parse_capnslog(str) ⇒ Object

github.com/coreos/pkg/tree/master/capnslog



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# File 'lib/nais/log/parser.rb', line 320

def Parser.parse_capnslog(str)
  if !str.nil? && m = str.match(/^(\d{4}-\d\d-\d\d \d\d:\d\d:\d\d\.\d{6}) ([TDNIWEC]) \| ([^:]+):\s*(.*)/)
    r = {}
    r['timestamp'] = Time.strptime(m[1], "%Y-%m-%d %H:%M:%S.%N").utc.iso8601(9)
    r['level'] = case m[2]
                 when 'T'
                   'Trace'
                 when 'D'
                   'Debug'
                 when 'N'
                   'Notice'
                 when 'I'
                   'Info'
                 when 'W'
                   'Warning'
                 when 'E'
                   'Error'
                 when 'C'
                   'Critical'
                 end
    r['component'] = m[3]
    r['message'] = m[4]
    return r
  else
    return nil
  end
end

.parse_coredns(str) ⇒ Object 



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# File 'lib/nais/log/parser.rb', line 170

def Parser.parse_coredns(str)
  if !str.nil? && m = str.match(/^(\S+) \[([^\]]+?)\] (.+)$/)
    r = {}
    r['timestamp'] = m[1]
    r['level'] = m[2]
    msg = m[3]
    r['message'] = msg
    if m = msg.match(/^(\S+?):(\d+) - (\d+) \"([^\"]*)\" (\S+) (\S+) (\d+) (\d+(?:\.\d+)?)s$/)
      r['remote_ip'] = m[1]
      r['remote_port'] = m[2]
      r['query_id'] = m[3]
      r['message'] = m[4]
      r['response_code'] = m[5]
      r['flags'] = m[6].split(',')
      r['content_length'] = m[7]
      r['processing_time'] = m[8]
    end
    return r
  else
    return nil
  end
end

.parse_glog(str) ⇒ Object 



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# File 'lib/nais/log/parser.rb', line 281

def Parser.parse_glog(str)
  if !str.nil? && m = str.match(/^([IWEF])(\d{4} \d\d:\d\d:\d\d\.\d{6})\s+(\S+)\s([^:]+):(\d+)\]\s+(.*)/)
    r = {}
    r['level'] = case m[1]
                 when 'I'
                   'Info'
                 when 'W'
                   'Warning'
                 when 'E'
                   'Error'
                 when 'F'
                   'Critical'
                 end
    r['timestamp'] = Time.strptime(m[2], "%m%d %H:%M:%S.%N").utc.iso8601(9)
    r['thread'] = m[3]
    r['file'] = m[4]
    r['line'] = m[5]
    r['message'] = m[6]
    return r
  else
    return nil
  end
end

.parse_gokit(str) ⇒ Object 



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# File 'lib/nais/log/parser.rb', line 272

def Parser.parse_gokit(str)
  r = Logfmt.parse(str)
  if !r.nil? && r.has_key?('ts') && r.has_key?('level') && (r.has_key?('msg') || r.has_key?('err'))
    r
  else
    nil
  end
end

.parse_influxdb(str) ⇒ Object 



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# File 'lib/nais/log/parser.rb', line 348

def Parser.parse_influxdb(str)
  if !str.nil? && m = str.match(/^\[([^\]]+)\] (.*)$/)
    r = {}
    comp = m[1]
    msg = m[2]
    if comp == 'httpd'
      ar, ext = parse_accesslog(msg)
      unless ar.nil?
        r = ar
        r['message'] = r.delete('request')
        if !ext.nil? && m = ext.match(/^ \"([^\"]+)\" \"([^\"]+)\" ([0-9a-f-]+) (\d+)$/)
          r['referer'] = m[1] unless m[1] == '-'
          r['user_agent'] = m[2]  unless m[2] == '-'
          r['request'] = m[3] unless m[3] == '-'
          r['processing_time'] = m[4] unless m[4] == '-'
        end
      end
    end
    case comp
    when 'D'
      r['level'] = 'Debug'
    when 'I'
      r['level'] = 'Info'
    when 'W'
      r['level'] = 'Warning'
    when 'E'
      r['level'] = 'Error'
    else
      r['component'] = comp
    end
    if m = msg.match(/^(\d{4}[-\/]\d\d[-\/]\d\d)[ T](\d\d:\d\d:\d\d)Z? (.*)/)
      r['timestamp'] = Time.strptime(m[1].tr('/','-')+" "+m[2]+"+00:00", "%Y-%m-%d %H:%M:%S%Z").iso8601
      r['message'] = m[3]
    elsif r['message'].nil?
      r['message'] = msg
    end
    return r
  else
    return nil
  end
end

.parse_kv(str) ⇒ Object 



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# File 'lib/nais/log/parser.rb', line 123

def Parser.parse_kv(str)
  r = {}
  if !str.nil? && match = str.scan(/\b([A-Za-z]{1,20})=(?:([^\ "][^, ]*)|\"([^\"]+)\"),?/)
    match.each{|m|
      r[m[0]] = m[1].nil? ? m[2] : m[1]
    }
  end
  return r.empty? ? nil : r
end

.parse_logrus(str) ⇒ Object 



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# File 'lib/nais/log/parser.rb', line 263

def Parser.parse_logrus(str)
  r = Logfmt.parse(str)
  if !r.nil? && r.has_key?('time') && r.has_key?('level') && r.has_key?('msg')
    r
  else
    nil
  end
end

.parse_redis(str) ⇒ Object 



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# File 'lib/nais/log/parser.rb', line 193

def Parser.parse_redis(str)
  if !str.nil? && m = str.match(/^(?:\[(\d+)\]|(\d+):([XCSM])) (\d{1,2} \S{3,} \d\d:\d\d:\d\d\.\d\d\d) ([-.*#]) (.+)/)
    r = {}
    if m[3].nil?
      r['thread'] = m[1]
    else
      r['thread'] = m[2]
      r['component'] = case m[3]
                       when 'X'
                         'sentinel'
                       when 'C'
                         'persistence'
                       when 'S'
                         'slave'
                       when 'M'
                         'master'
                       end
    end
    r['timestamp'] = Time.strptime(m[4]+'Z', "%d %b %H:%M:%S.%L%Z").utc.iso8601(3)
    r['level'] = case m[5]
                 when '.'
                   'Debug'
                 when '-'
                   'Info'
                 when '*'
                   'Info'
                 when '#'
                   'Error'
                 end
    r['message'] = m[6]
    return r
  else
    return nil
  end
end

.parse_simple(str) ⇒ Object 



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# File 'lib/nais/log/parser.rb', line 305

def Parser.parse_simple(str)
  if !str.nil? && m = str.match(/^(\d{4}-\d{2}-\d{2}[T ]\d{2}:\d{2}:\d{2}(?:[,.]\d{3,9})?) ([a-zA-Z]+) (?:\[([^\]]+)\] )?(\S+) (.*)/)
    r = {}
    r['timestamp'] = Time.parse(m[1]).utc.iso8601(9)
    r['level'] = m[2]
    r['thread'] = m[3] if !m[3].nil?
    r['component'] = m[4]
    r['message'] = m[5]
    return r
  else
    return nil
  end
end

.parse_uri(str) ⇒ Object 



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# File 'lib/nais/log/parser.rb', line 133

def Parser.parse_uri(str)
  r = {}
  unless str.nil?
    i = str.index('?')
    if i.nil?
      r['path'] = URI.decode(str)
    else
      if i != 0
        r['path'] = URI.decode(str[0,i])
      end
      if i+1 < str.length
        query = str[i+1, str.length]
        kv = {}
        query.scan(/([^=&]+)=([^&]+)/) do |k,v|
          k.gsub!(/\+/, ' ')
          k = URI.decode(k)
          v.gsub!(/\+/, ' ')
          v = URI.decode(v)
          if kv.has_key?(k)
            if kv[k].is_a?(Array)
              next if kv[k].include?(v)
              kv[k].push(v)
            else
              next if kv[k] == v
              kv[k] = [kv[k], v]
            end
          else
            kv[k] = v
          end
        end
        r['query_params'] = kv unless kv.empty?
      end
    end
  end
  r
end

.prefix_fields(record, prefix, regex, negate = false) ⇒ Object 



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# File 'lib/nais/log/parser.rb', line 111

def Parser.prefix_fields(record, prefix, regex, negate = false)
  r = {}
  record.each{|k,v|
    if (!negate && k =~ regex) || (negate && k !~ regex)
      r[prefix+k] = record[k]
    else
      r[k] = record[k]
    end
  }
  r
end

.remap_elasticsearch_fields(time, record) ⇒ Object 



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# File 'lib/nais/log/parser.rb', line 49

def Parser.remap_elasticsearch_fields(time, record)
  record["received_at"] = Time.new.iso8601(9)
  unless record.has_key?("@timestamp")
    record["@timestamp"] = record.delete("timestamp") || record.delete("time") || record.delete("ts") || Time.at(time).iso8601(9)
  end
  unless record.has_key?("message")
    record["message"] = record.delete("msg") || record.delete("log")
  end
  record.delete('log')
  record
end

.remap_java_fields(record) ⇒ Object 



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# File 'lib/nais/log/parser.rb', line 61

def Parser.remap_java_fields(record)
  record["thread"] = record.delete("thread_name") if record.has_key?("thread_name")
  record["component"] = record.delete("logger_name") if record.has_key?("logger_name")
  if record.has_key?("level")
    if record['level'].is_a?(String)
      record['level'].capitalize!
      record['level'] = 'Warning' if record['level'] == 'Warn'
    else
      record['x_level'] = record.delete('level')
    end
  end
  record.delete("level_value")
  record.delete("ndc")
  record.delete("source_host")
  if record.has_key?('exception')
    record['stack_trace'] = record['exception']['stacktrace'] if record['exception'].has_key?('stacktrace')
    record.delete('exception')
  end
  if record.has_key?('mdc')
    record['mdc'].each{|k,v|
      record[k] = record['mdc'][k]
    }
    record.delete('mdc')
  end
  record
end

.remap_log15(record) ⇒ Object

remap fields from github.com/inconshreveable/log15/



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# File 'lib/nais/log/parser.rb', line 89

def Parser.remap_log15(record)
  record['@timestamp'] = record.delete('t') if record.has_key?('t')
  record['message'] = record.delete('msg') if record.has_key?('msg')
  record['component'] = record.delete('logger') if record.has_key?('logger')
  if record.has_key?('lvl')
    record['level'] = case record['lvl']
                      when 'dbug'
                        'Debug'
                      when 'info'
                        'Info'
                      when 'warn'
                        'Warning'
                      when 'eror'
                        'Error'
                      when 'crit'
                        'Critical'
                      end
    record.delete('lvl')
  end
  record
end