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distributed-system-analysis/run-perf

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runperf/__init__.py

Summary

Maintainability
A
1 hr
Test Coverage
B
88%

Try, Except, Pass detected.
Wontfix

                    except Exception:   # pylint: disable=W0703
Severity: Info
Found in runperf/__init__.py by bandit

Cyclomatic complexity is too high in function main. (21)
Open

def main():
    """
    A tool to execute the same tasks on pre-defined scenarios/
    profiles and store the results together with metadata in
    a suitable structure for compare-perf to compare them.
Severity: Minor
Found in runperf/__init__.py by radon

Cyclomatic Complexity

Cyclomatic Complexity corresponds to the number of decisions a block of code contains plus 1. This number (also called McCabe number) is equal to the number of linearly independent paths through the code. This number can be used as a guide when testing conditional logic in blocks.

Radon analyzes the AST tree of a Python program to compute Cyclomatic Complexity. Statements have the following effects on Cyclomatic Complexity:

Construct Effect on CC Reasoning
if +1 An if statement is a single decision.
elif +1 The elif statement adds another decision.
else +0 The else statement does not cause a new decision. The decision is at the if.
for +1 There is a decision at the start of the loop.
while +1 There is a decision at the while statement.
except +1 Each except branch adds a new conditional path of execution.
finally +0 The finally block is unconditionally executed.
with +1 The with statement roughly corresponds to a try/except block (see PEP 343 for details).
assert +1 The assert statement internally roughly equals a conditional statement.
Comprehension +1 A list/set/dict comprehension of generator expression is equivalent to a for loop.
Boolean Operator +1 Every boolean operator (and, or) adds a decision point.

Source: http://radon.readthedocs.org/en/latest/intro.html

Cyclomatic complexity is too high in method __call__. (17)
Open

    def __call__(self):
        """
        Runs the comparison
        """
Severity: Minor
Found in runperf/__init__.py by radon

Cyclomatic Complexity

Cyclomatic Complexity corresponds to the number of decisions a block of code contains plus 1. This number (also called McCabe number) is equal to the number of linearly independent paths through the code. This number can be used as a guide when testing conditional logic in blocks.

Radon analyzes the AST tree of a Python program to compute Cyclomatic Complexity. Statements have the following effects on Cyclomatic Complexity:

Construct Effect on CC Reasoning
if +1 An if statement is a single decision.
elif +1 The elif statement adds another decision.
else +0 The else statement does not cause a new decision. The decision is at the if.
for +1 There is a decision at the start of the loop.
while +1 There is a decision at the while statement.
except +1 Each except branch adds a new conditional path of execution.
finally +0 The finally block is unconditionally executed.
with +1 The with statement roughly corresponds to a try/except block (see PEP 343 for details).
assert +1 The assert statement internally roughly equals a conditional statement.
Comprehension +1 A list/set/dict comprehension of generator expression is equivalent to a for loop.
Boolean Operator +1 Every boolean operator (and, or) adds a decision point.

Source: http://radon.readthedocs.org/en/latest/intro.html

Cyclomatic complexity is too high in function create_metadata. (15)
Open

def create_metadata(output_dir, args):
    """
    Generate RUNPERF_METADATA in this directory
    """
    def mask_arguments(cmd, i):
Severity: Minor
Found in runperf/__init__.py by radon

Cyclomatic Complexity

Cyclomatic Complexity corresponds to the number of decisions a block of code contains plus 1. This number (also called McCabe number) is equal to the number of linearly independent paths through the code. This number can be used as a guide when testing conditional logic in blocks.

Radon analyzes the AST tree of a Python program to compute Cyclomatic Complexity. Statements have the following effects on Cyclomatic Complexity:

Construct Effect on CC Reasoning
if +1 An if statement is a single decision.
elif +1 The elif statement adds another decision.
else +0 The else statement does not cause a new decision. The decision is at the if.
for +1 There is a decision at the start of the loop.
while +1 There is a decision at the while statement.
except +1 Each except branch adds a new conditional path of execution.
finally +0 The finally block is unconditionally executed.
with +1 The with statement roughly corresponds to a try/except block (see PEP 343 for details).
assert +1 The assert statement internally roughly equals a conditional statement.
Comprehension +1 A list/set/dict comprehension of generator expression is equivalent to a for loop.
Boolean Operator +1 Every boolean operator (and, or) adds a decision point.

Source: http://radon.readthedocs.org/en/latest/intro.html

Function create_metadata has a Cognitive Complexity of 15 (exceeds 6 allowed). Consider refactoring.
Open

def create_metadata(output_dir, args):
    """
    Generate RUNPERF_METADATA in this directory
    """
    def mask_arguments(cmd, i):
Severity: Minor
Found in runperf/__init__.py - About 1 hr 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

Refactor this function to reduce its Cognitive Complexity from 40 to the 15 allowed.
Open

def main():
Severity: Critical
Found in runperf/__init__.py by sonar-python

Cognitive Complexity is a measure of how hard the control flow of a function is to understand. Functions with high Cognitive Complexity will be difficult to maintain.

See

Refactor this function to reduce its Cognitive Complexity from 29 to the 15 allowed.
Open

    def process_result_json(src_path, dst_base):
Severity: Critical
Found in runperf/__init__.py by sonar-python

Cognitive Complexity is a measure of how hard the control flow of a function is to understand. Functions with high Cognitive Complexity will be difficult to maintain.

See

Refactor this function to reduce its Cognitive Complexity from 27 to the 15 allowed.
Open

    def __call__(self):
Severity: Critical
Found in runperf/__init__.py by sonar-python

Cognitive Complexity is a measure of how hard the control flow of a function is to understand. Functions with high Cognitive Complexity will be difficult to maintain.

See

Merge this if statement with the enclosing one.
Open

            if os.path.exists(split_arg[1]):
Severity: Major
Found in runperf/__init__.py by sonar-python

Merging collapsible if statements increases the code's readability.

Noncompliant Code Example

if condition1:
    if condition2:
        # ...

Compliant Solution

if condition1 and condition2:
    # ...

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