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app/models/vm_or_template/right_sizing.rb

Summary

Maintainability
A
55 mins
Test Coverage
B
86%

Use filter_map instead.
Open

    perfs.collect do |p|
      # Ignore any CPU bursts to 100% 15 minutes after VM booted
      next if (p.abs_max_cpu_usage_rate_average_value == 100.0) && boot_time && (p.abs_max_cpu_usage_rate_average_timestamp <= (boot_time + 15.minutes))

      p.abs_max_cpu_usage_rate_average_value
Severity: Minor
Found in app/models/vm_or_template/right_sizing.rb by rubocop

Use filter_map instead.
Open

    perfs.collect(&:abs_max_cpu_usagemhz_rate_average_value).compact.max
Severity: Minor
Found in app/models/vm_or_template/right_sizing.rb by rubocop

Use filter_map instead.
Open

    perfs.collect(&:abs_max_derived_memory_used_value).compact.max
Severity: Minor
Found in app/models/vm_or_template/right_sizing.rb by rubocop

Use filter_map instead.
Open

    perfs.collect(&:abs_max_mem_usage_absolute_average_value).compact.max
Severity: Minor
Found in app/models/vm_or_template/right_sizing.rb by rubocop

Similar blocks of code found in 3 locations. Consider refactoring.
Open

  def cpu_usagemhz_rate_average_max_over_time_period
    end_date = Time.now.utc.beginning_of_day - 1
    perfs = VimPerformanceAnalysis.find_perf_for_time_period(self, "daily", :end_date => end_date, :days => Metric::LongTermAverages::AVG_DAYS)
    perfs.collect(&:abs_max_cpu_usagemhz_rate_average_value).compact.max
Severity: Minor
Found in app/models/vm_or_template/right_sizing.rb and 2 other locations - About 20 mins to fix
app/models/vm_or_template/right_sizing.rb on lines 163..166
app/models/vm_or_template/right_sizing.rb on lines 176..179

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 27.

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 3 locations. Consider refactoring.
Open

  def derived_memory_used_max_over_time_period
    end_date = Time.now.utc.beginning_of_day - 1
    perfs = VimPerformanceAnalysis.find_perf_for_time_period(self, "daily", :end_date => end_date, :days => Metric::LongTermAverages::AVG_DAYS)
    perfs.collect(&:abs_max_derived_memory_used_value).compact.max
Severity: Minor
Found in app/models/vm_or_template/right_sizing.rb and 2 other locations - About 20 mins to fix
app/models/vm_or_template/right_sizing.rb on lines 163..166
app/models/vm_or_template/right_sizing.rb on lines 170..173

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 27.

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 3 locations. Consider refactoring.
Open

  def max_mem_usage_absolute_average_max_over_time_period
    end_date = Time.now.utc.beginning_of_day - 1
    perfs = VimPerformanceAnalysis.find_perf_for_time_period(self, "daily", :end_date => end_date, :days => Metric::LongTermAverages::AVG_DAYS)
    perfs.collect(&:abs_max_mem_usage_absolute_average_value).compact.max
Severity: Minor
Found in app/models/vm_or_template/right_sizing.rb and 2 other locations - About 20 mins to fix
app/models/vm_or_template/right_sizing.rb on lines 170..173
app/models/vm_or_template/right_sizing.rb on lines 176..179

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 27.

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

Avoid (in)equality comparisons of floats as they are unreliable.
Open

      next if (p.abs_max_cpu_usage_rate_average_value == 100.0) && boot_time && (p.abs_max_cpu_usage_rate_average_timestamp <= (boot_time + 15.minutes))
Severity: Minor
Found in app/models/vm_or_template/right_sizing.rb by rubocop

Checks for the presence of precise comparison of floating point numbers.

Floating point values are inherently inaccurate, and comparing them for exact equality is almost never the desired semantics. Comparison via the ==/!= operators checks floating-point value representation to be exactly the same, which is very unlikely if you perform any arithmetic operations involving precision loss.

Example:

# bad
x == 0.1
x != 0.1

# good - using BigDecimal
x.to_d == 0.1.to_d

# good
(x - 0.1).abs < Float::EPSILON

# good
tolerance = 0.0001
(x - 0.1).abs < tolerance

# Or some other epsilon based type of comparison:
# https://www.embeddeduse.com/2019/08/26/qt-compare-two-floats/

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