Function checkDiscovery
has a Cognitive Complexity of 28 (exceeds 5 allowed). Consider refactoring. Open
protected static function checkDiscovery(Device $device, array $array, $mibdir): bool
{
// all items must be true
foreach ($array as $key => $value) {
if ($check = Str::endsWith($key, '_except')) {
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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
The class Core has an overall complexity of 55 which is very high. The configured complexity threshold is 50. Open
class Core implements Module
{
/**
* @inheritDoc
*/
- Exclude checks
Function detectOS
has a Cognitive Complexity of 22 (exceeds 5 allowed). Consider refactoring. Open
public static function detectOS(Device $device, bool $fetch = true): string
{
if ($fetch) {
// some devices act oddly when getting both OIDs at once
$device->sysDescr = SnmpQuery::device($device)->get('SNMPv2-MIB::sysDescr.0')->value();
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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 checkDiscovery
has 41 lines of code (exceeds 25 allowed). Consider refactoring. Open
protected static function checkDiscovery(Device $device, array $array, $mibdir): bool
{
// all items must be true
foreach ($array as $key => $value) {
if ($check = Str::endsWith($key, '_except')) {
Method detectOS
has 35 lines of code (exceeds 25 allowed). Consider refactoring. Open
public static function detectOS(Device $device, bool $fetch = true): string
{
if ($fetch) {
// some devices act oddly when getting both OIDs at once
$device->sysDescr = SnmpQuery::device($device)->get('SNMPv2-MIB::sysDescr.0')->value();
Method calculateUptime
has 32 lines of code (exceeds 25 allowed). Consider refactoring. Open
private function calculateUptime(OS $os, ?string $sysUpTime, DataStorageInterface $datastore): void
{
global $agent_data;
$device = $os->getDevice();
Function calculateUptime
has a Cognitive Complexity of 9 (exceeds 5 allowed). Consider refactoring. Open
private function calculateUptime(OS $os, ?string $sysUpTime, DataStorageInterface $datastore): void
{
global $agent_data;
$device = $os->getDevice();
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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 false;
Avoid too many return
statements within this method. Open
return false;
Avoid too many return
statements within this method. Open
return true;
The method detectOS() has a Cyclomatic Complexity of 11. The configured cyclomatic complexity threshold is 10. Open
public static function detectOS(Device $device, bool $fetch = true): string
{
if ($fetch) {
// some devices act oddly when getting both OIDs at once
$device->sysDescr = SnmpQuery::device($device)->get('SNMPv2-MIB::sysDescr.0')->value();
- Read upRead up
- Exclude checks
CyclomaticComplexity
Since: 0.1
Complexity is determined by the number of decision points in a method plus one for the method entry. The decision points are 'if', 'while', 'for', and 'case labels'. Generally, 1-4 is low complexity, 5-7 indicates moderate complexity, 8-10 is high complexity, and 11+ is very high complexity.
Example
// Cyclomatic Complexity = 11
class Foo {
1 public function example() {
2 if ($a == $b) {
3 if ($a1 == $b1) {
fiddle();
4 } elseif ($a2 == $b2) {
fiddle();
} else {
fiddle();
}
5 } elseif ($c == $d) {
6 while ($c == $d) {
fiddle();
}
7 } elseif ($e == $f) {
8 for ($n = 0; $n < $h; $n++) {
fiddle();
}
} else {
switch ($z) {
9 case 1:
fiddle();
break;
10 case 2:
fiddle();
break;
11 case 3:
fiddle();
break;
default:
fiddle();
break;
}
}
}
}
Source https://phpmd.org/rules/codesize.html#cyclomaticcomplexity
The method checkDiscovery() has a Cyclomatic Complexity of 17. The configured cyclomatic complexity threshold is 10. Open
protected static function checkDiscovery(Device $device, array $array, $mibdir): bool
{
// all items must be true
foreach ($array as $key => $value) {
if ($check = Str::endsWith($key, '_except')) {
- Read upRead up
- Exclude checks
CyclomaticComplexity
Since: 0.1
Complexity is determined by the number of decision points in a method plus one for the method entry. The decision points are 'if', 'while', 'for', and 'case labels'. Generally, 1-4 is low complexity, 5-7 indicates moderate complexity, 8-10 is high complexity, and 11+ is very high complexity.
Example
// Cyclomatic Complexity = 11
class Foo {
1 public function example() {
2 if ($a == $b) {
3 if ($a1 == $b1) {
fiddle();
4 } elseif ($a2 == $b2) {
fiddle();
} else {
fiddle();
}
5 } elseif ($c == $d) {
6 while ($c == $d) {
fiddle();
}
7 } elseif ($e == $f) {
8 for ($n = 0; $n < $h; $n++) {
fiddle();
}
} else {
switch ($z) {
9 case 1:
fiddle();
break;
10 case 2:
fiddle();
break;
11 case 3:
fiddle();
break;
default:
fiddle();
break;
}
}
}
}
Source https://phpmd.org/rules/codesize.html#cyclomaticcomplexity
The class Core has a coupling between objects value of 16. Consider to reduce the number of dependencies under 13. Open
class Core implements Module
{
/**
* @inheritDoc
*/
- Read upRead up
- Exclude checks
CouplingBetweenObjects
Since: 1.1.0
A class with too many dependencies has negative impacts on several quality aspects of a class. This includes quality criteria like stability, maintainability and understandability
Example
class Foo {
/**
* @var \foo\bar\X
*/
private $x = null;
/**
* @var \foo\bar\Y
*/
private $y = null;
/**
* @var \foo\bar\Z
*/
private $z = null;
public function setFoo(\Foo $foo) {}
public function setBar(\Bar $bar) {}
public function setBaz(\Baz $baz) {}
/**
* @return \SplObjectStorage
* @throws \OutOfRangeException
* @throws \InvalidArgumentException
* @throws \ErrorException
*/
public function process(\Iterator $it) {}
// ...
}
Source https://phpmd.org/rules/design.html#couplingbetweenobjects
The method detectOS has a boolean flag argument $fetch, which is a certain sign of a Single Responsibility Principle violation. Open
public static function detectOS(Device $device, bool $fetch = true): string
- Read upRead up
- Exclude checks
BooleanArgumentFlag
Since: 1.4.0
A boolean flag argument is a reliable indicator for a violation of the Single Responsibility Principle (SRP). You can fix this problem by extracting the logic in the boolean flag into its own class or method.
Example
class Foo {
public function bar($flag = true) {
}
}
Source https://phpmd.org/rules/cleancode.html#booleanargumentflag
The method calculateUptime uses an else expression. Else clauses are basically not necessary and you can simplify the code by not using them. Open
} else {
$uptime_data = SnmpQuery::make()->get(['SNMP-FRAMEWORK-MIB::snmpEngineTime.0', 'HOST-RESOURCES-MIB::hrSystemUptime.0'])->values();
$uptime = max(
round(Number::cast($sysUpTime) / 100),
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- Exclude checks
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 assigning values to variables in if clauses and the like (line '218', column '17'). Open
protected static function checkDiscovery(Device $device, array $array, $mibdir): bool
{
// all items must be true
foreach ($array as $key => $value) {
if ($check = Str::endsWith($key, '_except')) {
- Read upRead up
- Exclude checks
IfStatementAssignment
Since: 2.7.0
Assignments in if clauses and the like are considered a code smell. Assignments in PHP return the right operand as their result. In many cases, this is an expected behavior, but can lead to many difficult to spot bugs, especially when the right operand could result in zero, null or an empty string and the like.
Example
class Foo
{
public function bar($flag)
{
if ($foo = 'bar') { // possible typo
// ...
}
if ($baz = 0) { // always false
// ...
}
}
}
Source http://phpmd.org/rules/cleancode.html#ifstatementassignment
Avoid unused parameters such as '$status'. Open
public function shouldPoll(OS $os, ModuleStatus $status): bool
- Read upRead up
- Exclude checks
UnusedFormalParameter
Since: 0.2
Avoid passing parameters to methods or constructors and then not using those parameters.
Example
class Foo
{
private function bar($howdy)
{
// $howdy is not used
}
}
Source https://phpmd.org/rules/unusedcode.html#unusedformalparameter
Avoid unused parameters such as '$device'. Open
public function cleanup(Device $device): void
- Read upRead up
- Exclude checks
UnusedFormalParameter
Since: 0.2
Avoid passing parameters to methods or constructors and then not using those parameters.
Example
class Foo
{
private function bar($howdy)
{
// $howdy is not used
}
}
Source https://phpmd.org/rules/unusedcode.html#unusedformalparameter
Avoid unused parameters such as '$status'. Open
public function shouldDiscover(OS $os, ModuleStatus $status): bool
- Read upRead up
- Exclude checks
UnusedFormalParameter
Since: 0.2
Avoid passing parameters to methods or constructors and then not using those parameters.
Example
class Foo
{
private function bar($howdy)
{
// $howdy is not used
}
}
Source https://phpmd.org/rules/unusedcode.html#unusedformalparameter
Avoid variables with short names like $os. Configured minimum length is 3. Open
private function calculateUptime(OS $os, ?string $sysUpTime, DataStorageInterface $datastore): void
- Read upRead up
- Exclude checks
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
Avoid variables with short names like $os. Configured minimum length is 3. Open
public function discover(OS $os): void
- Read upRead up
- Exclude checks
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
Avoid variables with short names like $os. Configured minimum length is 3. Open
public function shouldPoll(OS $os, ModuleStatus $status): bool
- Read upRead up
- Exclude checks
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
Avoid variables with short names like $os. Configured minimum length is 3. Open
public function poll(OS $os, DataStorageInterface $datastore): void
- Read upRead up
- Exclude checks
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
Avoid variables with short names like $os. Configured minimum length is 3. Open
public function shouldDiscover(OS $os, ModuleStatus $status): bool
- Read upRead up
- Exclude checks
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;
}
}
}