Deprecations

Release 0.7.0 saw the introduction of the routes-from macro, a new and preferred way of supporting live code changes at the REPL.

Previously, it was possible to convert a function call into an interceptor; the point of this was to defer invoking the function until when the route specification was converted to a router (which can happen on every request when in development mode); however, this relied on the use of eval, and is of no real utility with development mode and live REPL reloading and has been deprecated.

Normally, a function in an interceptor list is treated as a handler (rather than an interceptor). Alternately, a function with the :interceptor or :interceptorfn metadata would be invoked and expected to return an interceptor (or some other object that could convert to an interceptor). This is termed a deferred interceptor and has also been deprecated.

Handler functions are not deprecated, and are quite useful.

The io.pedestal.http.request.lazy and io.pedestal.http.request.zerocopy namespaces have been deprecated; neither is used by Pedestal.

The entire pedestal/pedestal.service-tools library has been deprecated.

The execute-only function has been deprecated; it is not believed this function is used outside of Pedestal’s test suite. Removing it opens up some options for optimizing chain execution in a later release.

Likewise, the newly added queue function replaces accessing the interceptor execution queue using the :io.pedestal.interceptor.chain/queue key; this will also allow future optimizations to chain execution.

The namespace io.pedestal.interceptor.trace was deprecated along with many related functions and protocols in the io.pedestal.log namespace related to metrics and tracing; these have been replaced with a new library, pedestal.telemetry.