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Mordil/RediStack

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Function parseBytesV2 has a Cognitive Complexity of 9 (exceeds 6 allowed). Consider refactoring.
Open

    private func parseBytesV2(from buffer: inout ByteBuffer) throws -> RESPValue? {
        var copy = buffer

        guard let token = copy.readInteger(as: UInt8.self) else { return nil }
Severity: Minor
Found in Sources/RediStack/RESP/RESPTranslator.swift - 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

Function _leaseConnection has a Cognitive Complexity of 9 (exceeds 6 allowed). Consider refactoring.
Confirmed

    private func _leaseConnection(logger: Logger, deadline: NIODeadline) -> EventLoopFuture<RedisConnection> {
        self.loop.assertInEventLoop()

        guard case .active = self.state else {
            logger.trace("attempted to lease connection from closed pool")
Severity: Minor
Found in Sources/RediStack/ConnectionPool/ConnectionPool.swift - 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

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

                let message: String = {
                    switch self {
                    case .invalidURLString: return "invalid URL string"
                    case .missingURLScheme: return "URL scheme is missing"
                    case .invalidURLScheme: return "invalid URL scheme, expected 'redis'"
Severity: Minor
Found in Sources/RediStack/RedisConnection+Configuration.swift and 1 other location - About 40 mins to fix
Sources/RediStack/RedisClient.swift on lines 272..280

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 50.

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

        public func increment(by amount: Int = 1) {
            self.count.wrappingIncrement(by: amount, ordering: .sequentiallyConsistent)
            self.gauge.record(self.count.load(ordering: .sequentiallyConsistent))
        }
Severity: Minor
Found in Sources/RediStack/RedisMetrics.swift and 1 other location - About 35 mins to fix
Sources/RediStack/RedisMetrics.swift on lines 91..94

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 46.

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

        public func decrement(by amount: Int = 1) {
            self.count.wrappingDecrement(by: amount, ordering: .sequentiallyConsistent)
            self.gauge.record(self.count.load(ordering: .sequentiallyConsistent))
        }
Severity: Minor
Found in Sources/RediStack/RedisMetrics.swift and 1 other location - About 35 mins to fix
Sources/RediStack/RedisMetrics.swift on lines 84..87

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 46.

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

Function triggerUserOutboundEvent has a Cognitive Complexity of 8 (exceeds 6 allowed). Consider refactoring.
Open

    public func triggerUserOutboundEvent(context: ChannelHandlerContext, event: Any, promise: EventLoopPromise<Void>?) {
        switch event {
        case is RedisGracefulConnectionCloseEvent:
            switch self.state {
            case .default:
Severity: Minor
Found in Sources/RediStack/ChannelHandlers/RedisCommandHandler.swift - About 35 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

Function _mapSortedSetResponse has a Cognitive Complexity of 8 (exceeds 6 allowed). Consider refactoring.
Confirmed

    fileprivate static func _mapSortedSetResponse(_ response: [RESPValue], scoreIsFirst: Bool) throws -> [(RESPValue, Double)] {
        let responseCount = response.count
        guard responseCount > 0 else { return [] }

        var result: [(RESPValue, Double)] = []
Severity: Minor
Found in Sources/RediStack/Commands/SortedSetCommands.swift - About 35 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

Function parseArray has a Cognitive Complexity of 8 (exceeds 6 allowed). Consider refactoring.
Confirmed

    internal func parseArray(from buffer: inout ByteBuffer) throws -> RESPValue? {
        guard let elementCount = try parseInteger(from: &buffer) else { return nil }
        guard elementCount > -1 else { return .null } // '*-1\r\n'
        guard elementCount > 0 else { return .array([]) } // '*0\r\n'
Severity: Minor
Found in Sources/RediStack/RESP/RESPTranslator.swift - About 35 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

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