This is done and part of version 5 onwards

Partially using airlift already .. but not as full base framework

Preparation phase (splittable):

• Remove dropwizard.auth: Remove dependency on Dropwizard Auth #289
• Remove io.dropwizard.metrics and dropwizard-servlets #290
• Replace wiremock (Jetty 11): Replace WireMock with okhttp3:mockwebserver #291
• Update OkHttp to 4.12.0 #293
• Simplify module class inheritance #300
• Remove dropwizard configuration and jackson #302
• Use static resource binding instead of runtime reflection based binding #307
• Add airlift stats #311
• Annotate JsonProperty on getter #314
• Update JWKS RSA to 0.22.1 #316

Migration phase (all-at-once):

• (Preview) Replace Dropwizard with Airlift #317
• Use Airlift for bootstrap
• Remove dropwizard.*
• Update to Jetty 12.0.8 EE10
• Replace com.codahale.metrics with airlift:jmx

Things that can't migrate to Airlift:

• GatewayRequestLogFactory
• Some metrics provided by Dropwizard
• Dropwizard Admin Web UI (:9082)

Uncertain things:

• Configuration: .properties or .yaml
  Currently Trino and Airlift are using .properties, but gateway is using YAML.
  IMO, YAML is a better configuration format.
  Adding support on yaml in airlift could be an option (see Unexpected value parsed in configuration when line contains trailing spaces airlift/airlift#738 (comment)).
• Listen to multiple ports using Airlift
  Request service at :9080, application service at :9081, and the Admin service at :9082
  Not sure how to do this using Airlift.