Class: LogStash::Filters::SchemaValidation

Inherits:
Base
  • Object
show all
Defined in:
lib/logstash/filters/schema_validation.rb

Overview

This filter will replace the contents of the default message field with whatever you specify in the configuration.

It is only intended to be used as an .

Instance Method Summary collapse

Instance Method Details

#filter(event) ⇒ Object 



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# File 'lib/logstash/filters/schema_validation.rb', line 45

def filter(event)

  schemaFilePath = generate_filepath(event)

  if File.exists?(schemaFilePath)

    schema = get_schema(schemaFilePath)

    json = @jsonMapper.readTree(event.to_json)

    #validationErrors = JSON::Validator.fully_validate(schemaFilePath, event.to_hash, :strict => @strict, :fragment => @fragment, :parse_data => false)

    validationErrors = schema.validate(json)

    if validationErrors.isSuccess
      filter_matched(event)
    else
      tag_unsuccessful_lookup(event)

      unless @report_field.nil? || @report_field.empty?
        report = Array.new

        validationErrors.each do |message|
          report.push(message.getMessage)
        end

        event.set(@report_field, report)
      end
    end

  else

    @logger.fatal? && @logger.fatal("Schema file '" + schemaFilePath + "' does not exists!")

    tag_unsuccessful_lookup(event)

    unless @report_field.nil? || @report_field.empty?
      event.set(@report_field, ["Schema file '" + schemaFilePath + "' does not exists!"])
    end

  end

end

#register ⇒ Object 



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# File 'lib/logstash/filters/schema_validation.rb', line 33

def register
  @schema = File.expand_path(@schema)

  @schemaFactory = JsonSchemaFactory.newBuilder().freeze()

  @jsonMapper = ObjectMapper.new
  @validator = JsonSchemaFactory.byDefault().getValidator()

  @cacheSchema = {}
end

#tag_unsuccessful_lookup(event) ⇒ Object 



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# File 'lib/logstash/filters/schema_validation.rb', line 89

def tag_unsuccessful_lookup(event)
  @logger.debug? && @logger.debug("Event data is not valide!", :event => event)
  @tag_on_failure.each{|tag| event.tag(tag)}
end