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Method start has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def start
      lifecycle(desc: true) do |i| # instance
        i.start unless i.started?
        # Input#start sometimes emits lots of events with in_tail/`read_from_head true` case
        # and it causes deadlock for small buffer/queue output. To avoid such problem,
Severity: Minor
Found in lib/fluent/root_agent.rb - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Method before_run has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def before_run
      @fluentd_conf = config[:fluentd_conf]
      @rpc_endpoint = nil
      @rpc_server = nil
      @counter = nil
Severity: Minor
Found in lib/fluent/supervisor.rb - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Method emit_events has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def emit_events(tag, es)
      return unless @warn_not_matched
      # TODO use time instead of num of records
      c = (@count += 1)
      if c < 512
Severity: Minor
Found in lib/fluent/match.rb - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Method calc_interval has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

        def calc_interval(num)
          interval = raw_interval(num)
          if @max_interval && interval > @max_interval
            @max_interval
          else
Severity: Minor
Found in lib/fluent/plugin_helper/retry_state.rb - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Method call has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

      def call(data)
        success = []
        errors = []

        if @empty && data.empty?
Severity: Minor
Found in lib/fluent/counter/validator.rb - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Method stop has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

      def stop
        super
        wakeup_threads = []
        @_threads_mutex.synchronize do
          @_threads.each_value do |thread|
Severity: Minor
Found in lib/fluent/plugin_helper/thread.rb - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Similar blocks of code found in 2 locations. Consider refactoring.
Open

op.on('-v', '--verbose', "increase verbose level (-v: debug, -vv: trace)", TrueClass) {|b|
  return unless b
  cur_level = cmd_opts.fetch(:log_level, default_opts[:log_level])
  cmd_opts[:log_level] = [cur_level - 1, Fluent::Log::LEVEL_TRACE].max
Severity: Minor
Found in lib/fluent/command/fluentd.rb and 1 other location - About 25 mins to fix
lib/fluent/command/fluentd.rb on lines 166..169

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 30.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Similar blocks of code found in 2 locations. Consider refactoring.
Open

op.on('-q', '--quiet', "decrease verbose level (-q: warn, -qq: error)", TrueClass) {|b|
  return unless b
  cur_level = cmd_opts.fetch(:log_level, default_opts[:log_level])
  cmd_opts[:log_level] = [cur_level + 1, Fluent::Log::LEVEL_ERROR].min
Severity: Minor
Found in lib/fluent/command/fluentd.rb and 1 other location - About 25 mins to fix
lib/fluent/command/fluentd.rb on lines 160..163

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 30.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Method http_server_create_http_server has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

      def http_server_create_http_server(title, addr:, port:, logger:, default_app: nil, proto: nil, tls_opts: nil, &block)
        unless block_given?
          raise ArgumentError, 'BUG: callback not specified'
        end
Severity: Minor
Found in lib/fluent/plugin_helper/http_server.rb - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Method enum_value has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def self.enum_value(val, opts = {}, name = nil)
      return nil if val.nil?

      s = val.to_sym
      list = opts[:list]
Severity: Minor
Found in lib/fluent/config/types.rb - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Similar blocks of code found in 2 locations. Consider refactoring.
Open

      def server_create_udp_socket(shared, bind, port)
        sock = if shared
                 server_socket_manager_client.listen_udp(bind, port)
               else
                 # UDPSocket.new doesn't set IPV6_V6ONLY flag, so use Addrinfo class instead.
Severity: Minor
Found in lib/fluent/plugin_helper/server.rb and 1 other location - About 25 mins to fix
lib/fluent/plugin_helper/server.rb on lines 370..382

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 30.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Method configure has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

        def configure(configs, parent: nil)
          configs.each do |config|
            type, conf = if config.has_key?(:conf) # for compatibility with initial API
                           [config[:type], config[:conf]]
                         else
Severity: Minor
Found in lib/fluent/plugin_helper/service_discovery/manager.rb - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Method after_shutdown has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

      def after_shutdown
        super
        wakeup_threads = []
        @_threads_mutex.synchronize do
          @_threads.each_value do |thread|
Severity: Minor
Found in lib/fluent/plugin_helper/thread.rb - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Similar blocks of code found in 2 locations. Consider refactoring.
Open

      def configure(conf)
        super

        @emit_records_metrics = metrics_create(namespace: "fluentd", subsystem: "filter", name: "emit_records", help_text: "Number of count emit records")
        @emit_size_metrics = metrics_create(namespace: "fluentd", subsystem: "filter", name: "emit_size", help_text: "Total size of emit events")
Severity: Minor
Found in lib/fluent/plugin/filter.rb and 1 other location - About 25 mins to fix
lib/fluent/plugin/input.rb on lines 48..53

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 30.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Method inject_values_to_record has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

      def inject_values_to_record(tag, time, record)
        return record unless @_inject_enabled

        r = record.dup
        if @_inject_hostname_key
Severity: Minor
Found in lib/fluent/plugin_helper/inject.rb - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Identical blocks of code found in 2 locations. Consider refactoring.
Open

          def data(&callback)
            raise "data callback can be registered just once, but registered twice" if self.singleton_methods.include?(:on_read)
            @data_callback = callback
            on_read_impl = case callback.arity
                           when 1 then :on_read_without_connection
Severity: Minor
Found in lib/fluent/plugin_helper/server.rb and 1 other location - About 25 mins to fix
lib/fluent/plugin_helper/server.rb on lines 700..709

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 30.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Method validate_dot_keys has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

        def self.validate_dot_keys(keys)
          keys.each { |key|
            next unless key.is_a?(String)
            if /\s+/.match?(key)
              raise Fluent::ConfigError, "whitespace character is not allowed in dot notation. Use bracket notation: #{key}"
Severity: Minor
Found in lib/fluent/plugin_helper/record_accessor.rb - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Method system_config_override has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

      def system_config_override(opts={})
        require 'fluent/engine'
        if !instance_variable_defined?("@_system_config") || @_system_config.nil?
          @_system_config = (defined?($_system_config) && $_system_config ? $_system_config : Fluent::Engine.system_config).dup
        end
Severity: Minor
Found in lib/fluent/system_config.rb - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Identical blocks of code found in 2 locations. Consider refactoring.
Open

          def data(&callback)
            raise "data callback can be registered just once, but registered twice" if self.singleton_methods.include?(:on_read)
            @data_callback = callback
            on_read_impl = case callback.arity
                           when 1 then :on_read_without_connection
Severity: Minor
Found in lib/fluent/plugin_helper/server.rb and 1 other location - About 25 mins to fix
lib/fluent/plugin_helper/server.rb on lines 608..617

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 30.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Method init has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

    def init(system_config, supervisor_mode: false)
      @system_config = system_config
      @supervisor_mode = supervisor_mode

      @suppress_config_dump = system_config.suppress_config_dump unless system_config.suppress_config_dump.nil?
Severity: Minor
Found in lib/fluent/engine.rb - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

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