Finagle 19.6.0

New Features

• finagle-core: SSL/TLS session information has been added to c.t.f.ClientConnection.
  69a28c10
• finagle-core: Add a Stack Module with 7 parameters for convenience sake. 6f9d7f0d
• finagle-core: For both, servers and clients, introduce a way to shift application-level future
  callbacks off of IO threads, into a given FuturePool or ExecutorService.
  Use withExecutionOffloaded configuration method (on a client or a server) to access
  new functionality. 40431bb4
• finagle-http: Added counters for request/response stream as: stream/request/closed,
  stream/request/failures, stream/request/failures/<exception_name>, stream/request/opened,
  stream/request/pending and stream/response/closed, stream/response/failures,
  stream/response/failures/<exception_name>, stream/response/opened, stream/response/pending.
  The counters will be populated when isChunked is set to true, the failures counters will be
  populated when isChunked is set to true and the stream fails before it has been fully read in the
  request and response respectively. d9b69bdc
• finagle-http: Add two new API variants in CookieMap: addAll and removeAll that allow for
  adding and removing cookies in bulk, without triggering a header rewrite on each item.
  4127cf6d
• finagle-mysql: finagle-mysql now supports using SSL/TLS with MySQL. SSL/TLS can be turned on by
  calling withTransport.tls(sslClientConfiguration) with a specified
  c.t.f.ssl.client.SslClientConfiguration. 0b6c20ac

Runtime Behavior Changes

• finagle: Upgrade to Netty 4.1.35.Final and netty-tcnative 2.0.25.Final.
  9ffbf7a7
• finagle-core: The default failure accrual policy has been changed from one
  which uses only consecutive failures to a hybrid model which uses both
  success rate over a window and consecutive failures. Previously this was
  changeable via toggle. The toggle has been removed, and the hybrid version
  has been made the default. 6f85c56e
• finagle-http: Rename request_stream_duration_ms to stream/request/duration_ms and
  response_stream_duration_ms to stream/response/duration_ms. The stats will be
  populated when isChunked is set to true in the request and response respectively.
  d9b69bdc
• finagle-http2: Disable ping-based failure detector in HTTP/2 client as it seems to do
  more harm than good. ea5b0c77
• finagle-http2: Frame logging is now disabled by default for clients. To enable,
  use the c.t.f.http2.param.FrameLogging.Enabled Stack Param. For example:
  Http.client.configured(FrameLogging.Enabled). 0b2ec201
• finagle-netty4: When using a Netty LocalChannel, the value of the BackPressure
  stack param is effectively changed to backPressureDisabled so that other functionality
  (e.g. SSL/TLS) works as expected. 3a8e5c19
• finagle-netty4: finagle/netty/pooling/used now includes the size of the buffers in the
  thread-local caches. 824596f0
• finagle-core: Stats and retry modules use a ResponseClassifier to give hints
  for how to handle failure (e.g., Is this a success or is it a failure? If
  it's a failure, may I retry the request?). The stats module increments a
  success counter for successes, and increments a failure counter for failures.
  But there isn't a way to tell the stats module to just do nothing. And, this
  is exactly what the stats module should do (nothing) in the case of ignorable
  failures (e.g. backup request cancellations). To represent these cases, we
  introduce a new ResponseClass: Ignorable. 256b79b8

Bug Fixes

• finagle-core: UsingSslSessionInfo would fail to be constructed properly when
  SSLSession.getLocalCertificates returns 'null'. 8d984963
• finagle-http: Finagle now properly sets the Transport.peerCertificate local context
  when using HTTP/2. a661fef4
• finagle-http: c.t.f.http.collection.RecordSchema.Record is now thread-safe.
  4e343f0e
• finagle-zipkin-core: Fix a race condition which could cause a span to get logged
  missing some annotations. 53901a28
• finagle-mysql: Don't log c.t.f.ChannelClosedException when rolling back a transaction
  fails. 29cfffe6

Breaking API Changes

• finagle-core: The exceptions c.t.f.SslHandshakeException and
  c.t.f.SslHostVerificationException were no longer used and have
  been removed. 2a53531d
• finagle-mysql: The structure of c.t.f.mysql.Request has changed. It is now based on
  a higher level c.t.f.mysql.ProtocolMessage and the cmd field must contain a value.
  Additionally, the synthetic Command.COM_NO_OP has been removed, as due to the
  restructuring it was no longer necessary. d6e4042f
• finagle-mysql: Uses of the abbreivation 'cap' have been renamed to the full
  word: 'capabilities', including for the baseCapabilities of Capability.
  4c57afda

Deprecations

• finagle-http: Removed deprecated response_size in Finagle Http stats. This is a duplicate stat
  of response_payload_bytes. 1286c438