Next

mach::Next

Description

Invokes the next middleware in the pipeline.

Header

#include <mach/middleware/Next.hpp>

Syntax

class Next {

public:
    explicit Next(std::function<void()> next);

    Next(const Next&) = delete;
    Next& operator=(const Next&) = delete;

    void operator()();
};

Operators

Name	Description
operator()	Invokes the next step in the middleware pipeline.

Thread Safety

Not thread-safe. Concurrent access to the same Next instance must be synchronized externally.

Remarks

• Next instances are provided by Mach during middleware execution.
• A Next instance is valid only for the duration of the current middleware invocation.
• Each Next instance may be invoked at most once.

Example

class LoggingMiddleware {

public:
    void invoke(mach::Context& context, mach::Next& next) {
        logger.info("Handling request.");

        next();

        logger.info("Request completed.");
    }
};

See Also

Name	Description
Context	Provides access to the current HTTP request and response.