cloudamatic/mu

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Unused block argument - key. If it's necessary, use _ or _key as an argument name to indicate that it won't be used.
Open

    $CONFIGURABLES.each_pair { |key, data|
Severity: Minor
Found in bin/mu-configure by rubocop

This cop checks for unused block arguments.

Example:

# bad

do_something do |used, unused|
  puts used
end

do_something do |bar|
  puts :foo
end

define_method(:foo) do |bar|
  puts :baz
end

Example:

#good

do_something do |used, _unused|
  puts used
end

do_something do
  puts :foo
end

define_method(:foo) do |_bar|
  puts :baz
end

Unused block argument - key. If it's necessary, use _ or _key as an argument name to indicate that it won't be used.
Open

    tree.each_pair { |key, data|
Severity: Minor
Found in bin/mu-configure by rubocop

This cop checks for unused block arguments.

Example:

# bad

do_something do |used, unused|
  puts used
end

do_something do |bar|
  puts :foo
end

define_method(:foo) do |bar|
  puts :baz
end

Example:

#good

do_something do |used, _unused|
  puts used
end

do_something do
  puts :foo
end

define_method(:foo) do |_bar|
  puts :baz
end

Use each_key instead of keys.each.
Open

commands.keys.each { |cmd|
Severity: Minor
Found in bin/mu-run-tests by rubocop

This cop checks for uses of each_key and each_value Hash methods.

Note: If you have an array of two-element arrays, you can put parentheses around the block arguments to indicate that you're not working with a hash, and suppress RuboCop offenses.

Example:

# bad
hash.keys.each { |k| p k }
hash.values.each { |v| p v }
hash.each { |k, _v| p k }
hash.each { |_k, v| p v }

# good
hash.each_key { |k| p k }
hash.each_value { |v| p v }

Useless assignment to variable - changed.
Open

        changed = true
Severity: Minor
Found in bin/mu-configure by rubocop

This cop checks for every useless assignment to local variable in every scope. The basic idea for this cop was from the warning of ruby -cw:

assigned but unused variable - foo

Currently this cop has advanced logic that detects unreferenced reassignments and properly handles varied cases such as branch, loop, rescue, ensure, etc.

Example:

# bad

def some_method
  some_var = 1
  do_something
end

Example:

# good

def some_method
  some_var = 1
  do_something(some_var)
end

Do not suppress exceptions.
Open

            rescue MU::MuError => e
Severity: Minor
Found in bin/mu-node-manage by rubocop

This cop checks for rescue blocks with no body.

Example:

# bad

def some_method
  do_something
rescue
  # do nothing
end

Example:

# bad

begin
  do_something
rescue
  # do nothing
end

Example:

# good

def some_method
  do_something
rescue
  handle_exception
end

Example:

# good

begin
  do_something
rescue
  handle_exception
end

Avoid more than 4 levels of block nesting.
Open

              subdata["value"] = newval if !newval.nil?
Severity: Minor
Found in bin/mu-configure by rubocop

This cop checks for excessive nesting of conditional and looping constructs.

You can configure if blocks are considered using the CountBlocks option. When set to false (the default) blocks are not counted towards the nesting level. Set to true to count blocks as well.

The maximum level of nesting allowed is configurable.

Redundant use of Object#to_s in interpolation.
Open

        puts "#{cmd} RETRY #{retries.to_s}".light_red
Severity: Minor
Found in bin/mu-run-tests by rubocop

This cop checks for string conversion in string interpolation, which is redundant.

Example:

# bad

"result is #{something.to_s}"

Example:

# good

"result is #{something}"

Use =~ in places where the MatchData returned by #match will not be used.
Open

            if n.match(/^#{Regexp.quote(pool_name)}-[a-z0-9]{3}$/i)
Severity: Minor
Found in bin/mu-node-manage by rubocop

This cop identifies the use of Regexp#match or String#match, which returns #<MatchData>/nil. The return value of =~ is an integral index/nil and is more performant.

Example:

# bad
do_something if str.match(/regex/)
while regex.match('str')
  do_something
end

# good
method(str =~ /regex/)
return value unless regex =~ 'str'

Avoid rescuing the Exception class. Perhaps you meant to rescue StandardError?
Open

        rescue Exception
Severity: Minor
Found in bin/mu-node-manage by rubocop

This cop checks for rescue blocks targeting the Exception class.

Example:

# bad

begin
  do_something
rescue Exception
  handle_exception
end

Example:

# good

begin
  do_something
rescue ArgumentError
  handle_exception
end

Unused block argument - node. If it's necessary, use _ or _node as an argument name to indicate that it won't be used.
Open

      $children.each_pair { |pid, node|
Severity: Minor
Found in bin/mu-node-manage by rubocop

This cop checks for unused block arguments.

Example:

# bad

do_something do |used, unused|
  puts used
end

do_something do |bar|
  puts :foo
end

define_method(:foo) do |bar|
  puts :baz
end

Example:

#good

do_something do |used, _unused|
  puts used
end

do_something do
  puts :foo
end

define_method(:foo) do |_bar|
  puts :baz
end

Avoid more than 4 levels of block nesting.
Open

                puts "#{nodename} - #{output}" if output.match(/[^\s]/)
Severity: Minor
Found in bin/mu-node-manage by rubocop

This cop checks for excessive nesting of conditional and looping constructs.

You can configure if blocks are considered using the CountBlocks option. When set to false (the default) blocks are not counted towards the nesting level. Set to true to count blocks as well.

The maximum level of nesting allowed is configurable.

Use =~ in places where the MatchData returned by #match will not be used.
Open

                puts "#{nodename} - #{output}" if output.match(/[^\s]/)
Severity: Minor
Found in bin/mu-node-manage by rubocop

This cop identifies the use of Regexp#match or String#match, which returns #<MatchData>/nil. The return value of =~ is an integral index/nil and is more performant.

Example:

# bad
do_something if str.match(/regex/)
while regex.match('str')
  do_something
end

# good
method(str =~ /regex/)
return value unless regex =~ 'str'

File.exists? is deprecated in favor of File.exist?.
Open

  if File.exists?("/opt/opscode/bin/chef-server-ctl")
Severity: Minor
Found in bin/mu-gcp-setup by rubocop

This cop checks for uses of the deprecated class method usages.

Example:

# bad

File.exists?(some_path)

Example:

# good

File.exist?(some_path)

Useless assignment to variable - exists.
Open

    exists = false
Severity: Minor
Found in bin/mu-azure-setup by rubocop

This cop checks for every useless assignment to local variable in every scope. The basic idea for this cop was from the warning of ruby -cw:

assigned but unused variable - foo

Currently this cop has advanced logic that detects unreferenced reassignments and properly handles varied cases such as branch, loop, rescue, ensure, etc.

Example:

# bad

def some_method
  some_var = 1
  do_something
end

Example:

# good

def some_method
  some_var = 1
  do_something(some_var)
end

Useless assignment to variable - bucket. Did you mean bucketobj?
Open

      bucket = MU::Cloud::Azure.storage(credentials: credset).get_bucket(bucketname)
Severity: Minor
Found in bin/mu-azure-setup by rubocop

This cop checks for every useless assignment to local variable in every scope. The basic idea for this cop was from the warning of ruby -cw:

assigned but unused variable - foo

Currently this cop has advanced logic that detects unreferenced reassignments and properly handles varied cases such as branch, loop, rescue, ensure, etc.

Example:

# bad

def some_method
  some_var = 1
  do_something
end

Example:

# good

def some_method
  some_var = 1
  do_something(some_var)
end

Useless assignment to variable - newmap. Use _ or _newmap as a variable name to indicate that it won't be used.
Open

        newtree, newmap = menu(
Severity: Minor
Found in bin/mu-configure by rubocop

This cop checks for every useless assignment to local variable in every scope. The basic idea for this cop was from the warning of ruby -cw:

assigned but unused variable - foo

Currently this cop has advanced logic that detects unreferenced reassignments and properly handles varied cases such as branch, loop, rescue, ensure, etc.

Example:

# bad

def some_method
  some_var = 1
  do_something
end

Example:

# good

def some_method
  some_var = 1
  do_something(some_var)
end

Use each_key instead of keys.each.
Open

          $CONFIGURABLES[key]["subtree"].keys.each { |subkey|
Severity: Minor
Found in bin/mu-configure by rubocop

This cop checks for uses of each_key and each_value Hash methods.

Note: If you have an array of two-element arrays, you can put parentheses around the block arguments to indicate that you're not working with a hash, and suppress RuboCop offenses.

Example:

# bad
hash.keys.each { |k| p k }
hash.values.each { |v| p v }
hash.each { |k, _v| p k }
hash.each { |_k, v| p v }

# good
hash.each_key { |k| p k }
hash.each_value { |v| p v }

Use =~ in places where the MatchData returned by #match will not be used.
Open

          if cloud.match(/^#{Regexp.quote(c)}$/i)
Severity: Minor
Found in bin/mu-run-tests by rubocop

This cop identifies the use of Regexp#match or String#match, which returns #<MatchData>/nil. The return value of =~ is an integral index/nil and is more performant.

Example:

# bad
do_something if str.match(/regex/)
while regex.match('str')
  do_something
end

# good
method(str =~ /regex/)
return value unless regex =~ 'str'

Redundant use of Object#to_s in interpolation.
Open

          MU.log "Userdata script too long updating #{nodename} (#{userdata.size.to_s}/#{Regexp.last_match[1]} bytes)", MU::ERR
Severity: Minor
Found in bin/mu-node-manage by rubocop

This cop checks for string conversion in string interpolation, which is redundant.

Example:

# bad

"result is #{something.to_s}"

Example:

# good

"result is #{something}"

Useless assignment to variable - badnodes.
Open

  badnodes = []
Severity: Minor
Found in bin/mu-node-manage by rubocop

This cop checks for every useless assignment to local variable in every scope. The basic idea for this cop was from the warning of ruby -cw:

assigned but unused variable - foo

Currently this cop has advanced logic that detects unreferenced reassignments and properly handles varied cases such as branch, loop, rescue, ensure, etc.

Example:

# bad

def some_method
  some_var = 1
  do_something
end

Example:

# good

def some_method
  some_var = 1
  do_something(some_var)
end
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