librenms/librenms

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LibreNMS/Alerting/QueryBuilderFilter.php

Summary

Maintainability
B
5 hrs
Test Coverage

Function generateTableFilter has a Cognitive Complexity of 20 (exceeds 5 allowed). Consider refactoring.
Open

    private function generateTableFilter()
    {
        $db_schema = $this->schema->getSchema();
        $valid_tables = array_diff(array_keys($this->schema->getAllRelationshipPaths()), self::$table_blacklist);

Severity: Minor
Found in LibreNMS/Alerting/QueryBuilderFilter.php - 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

Method generateTableFilter has 41 lines of code (exceeds 25 allowed). Consider refactoring.
Open

    private function generateTableFilter()
    {
        $db_schema = $this->schema->getSchema();
        $valid_tables = array_diff(array_keys($this->schema->getAllRelationshipPaths()), self::$table_blacklist);

Severity: Minor
Found in LibreNMS/Alerting/QueryBuilderFilter.php - About 1 hr to fix

    Function generateMacroFilter has a Cognitive Complexity of 8 (exceeds 5 allowed). Consider refactoring.
    Open

        private function generateMacroFilter($config_location)
        {
            $macros = Config::get($config_location, []);
            krsort($macros);
    
    
    Severity: Minor
    Found in LibreNMS/Alerting/QueryBuilderFilter.php - About 45 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

    Avoid too many return statements within this method.
    Open

            return null;
    Severity: Major
    Found in LibreNMS/Alerting/QueryBuilderFilter.php - About 30 mins to fix

      The method generateTableFilter uses an else expression. Else clauses are basically not necessary and you can simplify the code by not using them.
      Open

                      } else {
                          $this->filter[$field] = [
                              'id' => $field,
                              'type' => $type,
                          ];

      ElseExpression

      Since: 1.4.0

      An if expression with an else branch is basically not necessary. You can rewrite the conditions in a way that the else clause is not necessary and the code becomes simpler to read. To achieve this, use early return statements, though you may need to split the code it several smaller methods. For very simple assignments you could also use the ternary operations.

      Example

      class Foo
      {
          public function bar($flag)
          {
              if ($flag) {
                  // one branch
              } else {
                  // another branch
              }
          }
      }

      Source https://phpmd.org/rules/cleancode.html#elseexpression

      The method generateMacroFilter uses an else expression. Else clauses are basically not necessary and you can simplify the code by not using them.
      Open

                  } else {
                      $this->filter[$field] = [
                          'id' => $field,
                          'type' => 'integer',
                          'input' => 'radio',

      ElseExpression

      Since: 1.4.0

      An if expression with an else branch is basically not necessary. You can rewrite the conditions in a way that the else clause is not necessary and the code becomes simpler to read. To achieve this, use early return statements, though you may need to split the code it several smaller methods. For very simple assignments you could also use the ternary operations.

      Example

      class Foo
      {
          public function bar($flag)
          {
              if ($flag) {
                  // one branch
              } else {
                  // another branch
              }
          }
      }

      Source https://phpmd.org/rules/cleancode.html#elseexpression

      Avoid unused local variables such as '$value'.
      Open

              foreach ($macros as $key => $value) {

      UnusedLocalVariable

      Since: 0.2

      Detects when a local variable is declared and/or assigned, but not used.

      Example

      class Foo {
          public function doSomething()
          {
              $i = 5; // Unused
          }
      }

      Source https://phpmd.org/rules/unusedcode.html#unusedlocalvariable

      TODO found
      Open

                  //TODO implement field selection and change back to integer

      The property $table_blacklist is not named in camelCase.
      Open

      class QueryBuilderFilter implements \JsonSerializable
      {
          private static $table_blacklist = [
              'device_group_device',
              'alerts',

      CamelCasePropertyName

      Since: 0.2

      It is considered best practice to use the camelCase notation to name attributes.

      Example

      class ClassName {
          protected $property_name;
      }

      Source

      Avoid variables with short names like $id. Configured minimum length is 3.
      Open

          public function getFilter($id)

      ShortVariable

      Since: 0.2

      Detects when a field, local, or parameter has a very short name.

      Example

      class Something {
          private $q = 15; // VIOLATION - Field
          public static function main( array $as ) { // VIOLATION - Formal
              $r = 20 + $this->q; // VIOLATION - Local
              for (int $i = 0; $i < 10; $i++) { // Not a Violation (inside FOR)
                  $r += $this->q;
              }
          }
      }

      Source https://phpmd.org/rules/naming.html#shortvariable

      There are no issues that match your filters.

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