src/pyff/mdx.py

Summary

Maintainability
F
1 wk
Test Coverage

Function request has a Cognitive Complexity of 88 (exceeds 5 allowed). Consider refactoring.
Open

    def request(self, **kwargs):
        """The main request processor. This code implements all rendering of metadata.
        """

        if not self.ready:
Severity: Minor
Found in src/pyff/mdx.py - About 1 day 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

File mdx.py has 647 lines of code (exceeds 250 allowed). Consider refactoring.
Open

"""
An implementation of draft-lajoie-md-query

.. code-block:: bash

Severity: Major
Found in src/pyff/mdx.py - About 1 day to fix

    Cyclomatic complexity is too high in method request. (33)
    Open

        def request(self, **kwargs):
            """The main request processor. This code implements all rendering of metadata.
            """
    
            if not self.ready:
    Severity: Minor
    Found in src/pyff/mdx.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 main. (17)
    Open

    def main():
        """
        The main entrypoint for the pyffd command.
        """
        args = parse_options("pyffd",
    Severity: Minor
    Found in src/pyff/mdx.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 main has a Cognitive Complexity of 24 (exceeds 5 allowed). Consider refactoring.
    Open

    def main():
        """
        The main entrypoint for the pyffd command.
        """
        args = parse_options("pyffd",
    Severity: Minor
    Found in src/pyff/mdx.py - About 3 hrs 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

    Cyclomatic complexity is too high in class MDServer. (14)
    Open

    class MDServer(object):
        """The MDServer class is the business logic of pyFF. This class is isolated from the request-decoding logic
        of MDRoot and from the ancilliary classes like MDStats and WellKnown.
        """
    
    
    Severity: Minor
    Found in src/pyff/mdx.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 webfinger has a Cognitive Complexity of 18 (exceeds 5 allowed). Consider refactoring.
    Open

        def webfinger(self, resource=None, rel=None):
            """An implementation the webfinger protocol (http://tools.ietf.org/html/draft-ietf-appsawg-webfinger-12)
            in order to provide information about up and downstream metadata available at this pyFF instance.
    
    Example:
    Severity: Minor
    Found in src/pyff/mdx.py - About 2 hrs 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

    Cyclomatic complexity is too high in method webfinger. (9)
    Open

        @cherrypy.expose
        def webfinger(self, resource=None, rel=None):
            """An implementation the webfinger protocol (http://tools.ietf.org/html/draft-ietf-appsawg-webfinger-12)
            in order to provide information about up and downstream metadata available at this pyFF instance.
    
    
    Severity: Minor
    Found in src/pyff/mdx.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 __init__. (6)
    Open

        def __init__(self, pipes=None, observers=None):
    
            if not observers:
                observers = []
            if not pipes:
    Severity: Minor
    Found in src/pyff/mdx.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 main has 28 lines of code (exceeds 25 allowed). Consider refactoring.
    Open

    def main():
        """
        The main entrypoint for the pyffd command.
        """
        args = parse_options("pyffd",
    Severity: Minor
    Found in src/pyff/mdx.py - About 1 hr to fix

      Avoid deeply nested control flow statements.
      Open

                              for host_part in host.rstrip(get_public_suffix(host)).split('.'):
                                  if host_part is not None and len(host_part) > 0:
                                      query.append(host_part)
                          log.debug("created query: %s" % ",".join(query))
      Severity: Major
      Found in src/pyff/mdx.py - About 45 mins to fix

        Avoid deeply nested control flow statements.
        Open

                                if ':' in url.netloc:
                                    (host, port) = url.netloc.split(':')
                                for host_part in host.rstrip(get_public_suffix(host)).split('.'):
        Severity: Major
        Found in src/pyff/mdx.py - About 45 mins to fix

          Avoid deeply nested control flow statements.
          Open

                                  for k, v in list(state.get('headers', {}).items()):
                                      cherrypy.response.headers[k] = v
                                  cherrypy.response.headers['Access-Control-Allow-Origin'] = '*'
          Severity: Major
          Found in src/pyff/mdx.py - About 45 mins to fix

            Avoid too many return statements within this function.
            Open

                                    return render_template("entity.html",
            Severity: Major
            Found in src/pyff/mdx.py - About 30 mins to fix

              Avoid too many return statements within this function.
              Open

                                      return r
              Severity: Major
              Found in src/pyff/mdx.py - About 30 mins to fix

                Function dispatch has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
                Open

                    def dispatch(self, path_info):
                        # log.debug("EncodingDispatcher (%s) called with %s" % (",".join(self.prefixes), path_info))
                        # vpath = path_info.replace("%2F", "/")
                        vpath = path_info
                        for prefix in self.prefixes:
                Severity: Minor
                Found in src/pyff/mdx.py - 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

                        if len(args) > 0 and args[0] in self.server.aliases:
                            kwargs['pfx'] = args[0]
                            if len(args) > 1:
                                kwargs['path'] = args[1]
                            return self.server.request(**kwargs)
                Severity: Major
                Found in src/pyff/mdx.py and 1 other location - About 1 day to fix
                src/pyff/mdx.py on lines 415..423

                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 140.

                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

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

                        if len(args) > 0 and args[0] in self.server.aliases:
                            kwargs['pfx'] = args[0]
                            if len(args) > 1:
                                kwargs['path'] = args[1]
                            return self.server.request(**kwargs)
                Severity: Major
                Found in src/pyff/mdx.py and 1 other location - About 1 day to fix
                src/pyff/mdx.py on lines 271..279

                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 140.

                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

                    if config.error_log is not None:
                        if config.error_log.startswith('syslog:'):
                            facility = config.error_log[7:]
                            h = SysLogLibHandler(facility=facility)
                            app.log.error_log.addHandler(h)
                Severity: Major
                Found in src/pyff/mdx.py and 1 other location - About 5 hrs to fix
                src/pyff/mdx.py on lines 757..764

                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 94.

                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

                    if config.access_log is not None:
                        if config.access_log.startswith('syslog:'):
                            facility = config.access_log[7:]
                            h = SysLogLibHandler(facility=facility)
                            app.log.access_log.addHandler(h)
                Severity: Major
                Found in src/pyff/mdx.py and 1 other location - About 5 hrs to fix
                src/pyff/mdx.py on lines 748..755

                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 94.

                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

                        for a in self.server.md.store.collections():
                            if a is not None and '://' not in a:
                                _links(a)
                Severity: Major
                Found in src/pyff/mdx.py and 1 other location - About 1 hr to fix
                src/pyff/api.py on lines 270..272

                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 44.

                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

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

                        if pfx and path:
                            q = "{%s}%s" % (pfx, path)
                            path = "/%s/%s" % (alias, path)
                        else:
                            q = path
                Severity: Major
                Found in src/pyff/mdx.py and 1 other location - About 1 hr to fix
                src/pyff/api.py on lines 140..144

                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 43.

                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

                    try:
                        engine.start()
                    except Exception as ex:
                        logging.debug(traceback.format_exc())
                        logging.error(ex)
                Severity: Major
                Found in src/pyff/mdx.py and 2 other locations - About 55 mins to fix
                src/pyff/md.py on lines 34..42
                src/pyff/tools.py on lines 30..75

                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 37.

                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

                There are no issues that match your filters.

                Category
                Status