Functions used to create and wrap handlers with handler middleware.
history(array $container) : callable
Middleware that pushes history data to an ArrayAccess container.
| array | $container | Container to hold the history (by reference). |
if container is not an array or ArrayAccess.
Returns a function that accepts the next handler.
tap(callable $before = null, callable $after = null) : callable
Middleware that invokes a callback before and after sending a request.
The provided listener cannot modify or alter the response. It simply "taps" into the chain to be notified before returning the promise. The before listener accepts a request and options array, and the after listener accepts a request, options array, and response promise.
| callable | $before | Function to invoke before forwarding the request. |
| callable | $after | Function invoked after forwarding. |
Returns a function that accepts the next handler.
retry(callable $decider, callable $delay = null) : callable
Middleware that retries requests based on the boolean result of invoking the provided "decider" function.
If no delay function is provided, a simple implementation of exponential backoff will be utilized.
| callable | $decider | Function that accepts the number of retries, a request, [response], and [exception] and returns true if the request is to be retried. |
| callable | $delay | Function that accepts the number of retries and returns the number of milliseconds to delay. |
Returns a function that accepts the next handler.
log(\Psr\Log\LoggerInterface $logger, \GuzzleHttp\MessageFormatter $formatter, string $logLevel = \Psr\Log\LogLevel::INFO) : callable
Middleware that logs requests, responses, and errors using a message formatter.
| \Psr\Log\LoggerInterface | $logger | Logs messages. |
| \GuzzleHttp\MessageFormatter | $formatter | Formatter used to create message strings. |
| string | $logLevel | Level at which to log requests. |
Returns a function that accepts the next handler.