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.. Author notes: this file is formatted with restructured text
(http://docutils.sourceforge.net/docs/user/rst/quickstart.html)
as it is included in Finagle's user's guide.
Note that ``RB_ID=#`` correspond to associated messages in commits.
6.x
-----
Breaking API Changes
~~~~~~~~~~~~~~~~~~~~
* finagle-memcached: Remove deprecated methods on `c.t.f.memcached.Client`:
- `apply(group: Group[SocketAddress])`
- `apply(cluster: Cluster[SocketAddress])`
Use `c.t.f.Memcached.client` to create a Memcached client. ``RB_ID=899331``
Deprecations
~~~~~~~~~~~~
* finagle-base-http: Deprecate `c.t.f.http.Message.ContentTypeWwwFrom`.
Use `c.t.f.http.Message.ContentTypeWwwForm` instead. ``RB_ID=901041``
* finagle-base-http: Deprecate the lazy `response: Response` field on the Request type.
This field is potentially hazardous as it's not necessarily the Response that will
be returned by a Service but it is often used as such. Construct a Response using
the static constructor methods. ``RB_ID=899983``
* finagle-memcached: Deprecate methods on `c.t.f.memcached.Client`:
- `apply(name: Name)`
- `apply(host: String)`
Use `c.t.f.Memcached.client` to create a Memcached client. `RB_ID=899331``
* finagle-memcached: Deprecate `c.t.f.memcached.protocol.text.Memcached` object.
Use `c.t.f.Memcached.client` to create Memcached clients. ``RB_ID=899009``
Runtime Behavior Changes
~~~~~~~~~~~~~~~~~~~~~~~~
* finagle-redis: Transport implementation is now based on Netty 4 (instead of Netty 3).
``RB_ID=895728``
* finagle-toggle: `ToggleMap` `Toggles` now rehash the inputs to
`apply` and `isDefinedAt` in order to promote a relatively even
distribution even when the inputs do not have a good distribution.
This allows users to get away with using a poor hashing function
such as `String.hashCode`. ``RB_ID=899195``
Bug Fixes
~~~~~~~~~
* finagle-core: Properly compute length when converting a `Buf.ByteArray`
to a Netty 4 `ByteBuf`. ``RB_ID=901605``
6.41.0
------
New Features
~~~~~~~~~~~~
* finagle-core: Added stat "pending_requests/rejected" for the number of requests
rejected by `c.t.f.PendingRequestFilter`. ``RB_ID=898184``
Breaking API Changes
~~~~~~~~~~~~~~~~~~~~
* finagle-core: Remove the `Filter#andThen(Req1 => Future[Rep1]): Req2 => Future[Rep2]`
method. This overload is no longer usable in scala 2.12, because `Service`
is a SAM. Because of the order in which SAMs get resolved, literal
functions in scala will get confused about which method they should use.
Instead of passing a Function directly, wrap the Function with a Service.mk.
``RB_ID=896524``
* finagle-core: `CancelledWriteException` was removed as it is no longer used.
``RB_ID=896757``
* finagle-kestrel: The `codec` method has been removed from the kestrel
MultiReader object. Configure a ClientBuilder protocol using the default
thrift StackClient, Thrift.client, via the `stack` method of ClientBuilder.
``RB_ID=894297``
* finagle-memcached: Remove deprecated `cluster` method on `c.t.f.memcached.KetamaClientBuilder`.
``RB_ID=898365``
Runtime Behavior Changes
~~~~~~~~~~~~~~~~~~~~~~~~
* finagle-core: `c.t.f.builder.ClientBuilder` remove deprecated methods.
The same functionality is available through the Stack-based APIs or
`ClientBuilder.configured`, with the exception of `channelFactory`, which
has no analog because it exposes a Netty 3 API. ``RB_ID=893147``
- `channelFactory`
- `expHostConnectionBufferSize`
- `hostConnectionIdleTime`
- `hostConnectionMaxIdleTime`
- `hostConnectionMaxLifeTime`
- `hostConnectionMaxWaiters`
- `readerIdleTimeout`
- `recvBufferSize`
- `sendBufferSize`
- `writerIdleTimeout`
* finagle-core: Lower logging level used in `c.t.f.util.DefaultMonitor` for expected
exceptions: `CancelledRequestException`, `TooManyWaitersException`,
`CancelledConnectionException`, `FailedFastException`. ``RB_ID=895702``
* finagle-core: `c.t.f.util.DefaultMonitor` now logs most exceptions at
`WARNING` level instead of `FATAL`. ``RB_ID=895983``
* finagle-core: `c.t.f.util.DefaultMonitor` works harder to find the appropriate
log level by walking the exception's causes to find `c.t.util.TimeoutExceptions`
and `c.t.logging.HasLogLevel`. ``RB_ID=896695``
* finagle-core: The `c.t.f.service.Retries` module will now flag a response as
`NonRetryable` if either the retry limit is reached or the retry budget is exhausted.
``RB_ID=897800``
* finagle-mdns: Uses only one implementation backed by jmdns instead of trying
to use a platform specific implementation of DDNS if present. ``RB_ID=897917``
* finagle-netty4: Client initiated TLS/SSL session renegotiations are now rejected
by default. ``RB_ID=895871``
* finagle-netty4: `ChannelTransport` no longer interrupts netty write operations
in order to temporarily unblock rollout of netty4. This reverts netty4 back
to netty3 semantics for writes. ``RB_ID=896757``
Deprecations
~~~~~~~~~~~~
* finagle-kestrel: Deprecate the `codec` method on `c.t.f.kestrel.MultiReaderMemcache`.
Use `.stack(Kestrel.client)` on the configured `c.t.f.builder.ClientBuilder` instead.
``RB_ID=895989``
6.40.0
------
New Features
~~~~~~~~~~~~
* finagle: Most libraries (excluding finagle-thrift{,mux}) no longer need to
add an additional resolver that points to maven.twttr.com. ``RB_ID=878967``
* finagle: Introducing a new Finagle module `finagle-base-http` that provides
a common ground for both Netty 3 (`finagle-http`) and Netty 4 (`finagle-netty4-http`)
HTTP implementations. Netty 3 is still a default transport used in Finagle's
`Http.client` and `Http.server`. ```RB_ID=884614``
* finagle-core: Introduce the `c.t.f.client.DynamicTimeout` module allowing clients
to specify call-site specific timeouts. ``RB_ID=885005``
* finagle-core: A new module, `c.t.f.service.DeadlineFilter`, can be added to stack-based servers
and clients, which rejects requests with expired deadlines ``RB_ID=895820``
* finagle-memcached: Introduce `c.t.f.memcached.CasResult.replaced: Boolean`
to help transition usage off of the deprecated `cas` client method to
`checkAndSet`. ``RB_ID=891628``
* finagle-thrift: We now depend on a fork of libthrift hosted in the Central Repository.
The new package lives in the 'com.twitter' organization. This removes the necessity of
depending on maven.twttr.com. This also means that eviction will not be automatic and
using a newer libthrift library requires manual eviction if artifacts are being pulled
in transitively. ``RB_ID=885879``
Runtime Behavior Changes
~~~~~~~~~~~~~~~~~~~~~~~~
* finagle-core: `Monitor` logging is improved in Finagle. ``RB_ID=878890``
- All exceptions caught in the stack are now logged by Finagle's `DefaultMonitor`
(previously Util's `RootMonitor`) such that Twitter's logging
framework is used instead of JDK logging.
- `DefaultMonitor` is now installed implicitly such that it will be composed
(via `orElse`) with the monitor passed by a user through the stack param.
The logic behind this compostion is quite straightforward: exceptions that
are't handled by a user-defined monitor propagated to the default monitor.
- `DefaultMonitor` now logs upstream socket address, downstream socket address,
and a client/server label if those are available.
- `RootMonitor` is still used to handle fatal exceptions from pending side-effect-only
closures (i.e., `onFailure`, `onSuccess`) on a service future/promise.
* finagle-core: `c.t.f.service.DeadlineStatsFilter` has been removed from the
server stack, along with all related stats.
The "admission_control/deadline/transit_latency_ms" stat has been moved to
`c.t.f.filter.ServerStatsFilter` and re-scoped as "transit_latency_ms"
``RB_ID=895820``
* finagle-mux: `com.twitter.finagle.Failures` are now sent over the wire with
their flags intact via `com.twitter.finagle.mux.transport.MuxFailure` in the
previously unused Rdispatch context. This allows for greater signaling along
a chain of services. See the "MuxFailure Flags" section of the mux protocol
spec in finagle-mux/src/main/scala/c/t/f/mux/package.scala ``RB_ID=882431``
* finagle-netty4: The netty4 listener + transporter no longer manage direct byte
buffers by default. c.t.f.netty4.channel.DirectToHeapInboundHandler is introduced
to help protocol builders manage them. ``RB_ID=881648``
* finagle-stats: Changed the default behavior of empty histograms to only export
the count. Thus the `com.twitter.finagle.stats.exportEmptyHistograms` toggle
now defaults to `0.0`. ``RB_ID=882522``
Breaking API Changes
~~~~~~~~~~~~~~~~~~~~
* finagle: Some APIs around configuring TLS/SSL on Finagle clients have changed to
unblock Netty 4 adoption. ``RB_ID=890935``
- `c.t.f.Http.client.withTls(Netty3TransporterTLSConfig)` is removed. Use
variations of `c.t.f.Http.client.withTransport.tls` instead.
- `c.t.f.netty3.Netty3TransporterTLSConfig` is removed.
* finagle: Some APIs around configuring TLS/SSL on Finagle servers have changed to
unblock Netty 4 adoption. ``RB_ID=891270``
- `c.t.f.Http.server.withTls(Netty3ListenerTLSConfig)` is removed. Use
variations of `c.t.f.Http.server.withTransport.tls` instead.
- `c.t.f.netty3.Netty3ListenerTLSConfig` is removed.
* finagle-core: Removed the protected and unused method `read(permit: Permit): Future[Rep]`
from `SerialClientDispatcher`. ``RB_ID=881978``
* finagle-core: Removed a gauge, `idle`, from `c.t.f.factory.ServiceFactoryCache`.
``RB_ID=884210``
* finagle-core: `ServiceTimeoutException` now extends `NoStackTrace`. ``RB_ID=886809``
* finagle-core: Marked `com.twitter.finagle.util.ConcurrentRingBuffer` as
private. It doesn't fit the typical programming model we encourage for
users of finagle, and so we found it was rarely used. ``RB_ID=888801``
* finagle-core: Marked `transform` in `com.twitter.finagle.Stack` as protected. It is
too powerful and unnecessary for users, and should be used by implementors only.
* finagle-core: Removed the `StatsReceiver` argument from `TimeoutFilter`. ``RB_ID=891380``
* finagle-core: Stopped exporting a few metrics related to deadlines, and replaced with a simpler
one. There was a per-`TimeoutFilter` one named `timeout/expired_deadline_ms`, and a per-server
one named `admission_control/deadline/deadline_budget_ms`. We added instead a per-server one
named `admission_control/deadline/exceeded_ms`. ``RB_ID=891380``
* finagle-http: HttpMuxer now takes in a Seq[Route] instead of a
Seq[(String, Service[Request, Response])]. ``RB_ID=886829``
* finagle-http: As part of the first step towards restructuring Finagle HTTP modules
required for Netty 4 adoption, HTTP params are moved from the inner object `c.t.f.Http.param`
into their own package `c.t.f.http.param`. ``RB_ID=885155``
* finagle-redis: A couple of methods had to be renamed (and return type changed) to
unblock Netty 4 adoption. ``RB_ID=882622``
- `Command.toChannelBuffer` renamed to `Command.toBuf` and return
type changed from N3 `ChannelBuffer` to Finagle `Buf`.
- `Command.toByteArray` is removed.
- Both `Command.key` and `Command.value` now implemented in terms of `Buf`s
(no `ChannelBuffer`s).
* finagle-redis: An API around `c.t.f.redis.protocol.Command` was modernized as part of
major restructuring required for the Netty 4 adoption. ``RB_ID=885811``
- `RedisMessage` (a common parent for both `Command` and `Reply`) has been removed.
- The encoding machinery was restructured to eliminate duplicated and dead code.
* finagle-thrift: Removed deprecated `ThriftRichClient.newServiceIface` methods
which did not take a label. Use the versions that take a String label.
``RB_ID=891004``
* finagle-thrift: Removed deprecated `ThriftRichClient.newIface` methods based
on `Groups`. Use the versions that a `dest` or `Name`. ``RB_ID=891004``
* finagle-thriftmux: Removed deprecated classes `ThriftMuxClient`, `ThriftMuxClientLike`,
`ThriftMuxServer`, and `ThriftMuxServerLike`. ``RB_ID=880924``
Bug Fixes
~~~~~~~~~
* finagle-core: The `withTlsWithoutValidation` and `tlsWithoutValidation`
APIs have been fixed for an issue on Java 8 where certificate validation
was being attempted instead of bypassed. ``RB_ID=881660``
* finagle-http: The toggle implementation for `com.twitter.finagle.http.serverErrorsAsFailures`
had a bug when toggled on. That toggle is no longer used and is superseded by
`com.twitter.finagle.http.serverErrorsAsFailuresV2`. ``RB_ID=882151``
* finagle-netty4: Connecting to a Socks 5 proxy using Finagle with Netty 4
now works properly. This previously resulted in a timeout and
`ProxyConnectException`. ``RB_ID=884344``
* finagle-netty4: Don't swallow bind failures. ``RB_ID=892217``
Deprecations
~~~~~~~~~~~~
* finagle-core: `c.t.f.builder.ClientBuilder` deprecate some seldom used methods.
The same functionality is available through the Stack-based APIs or
`ClientBuilder.configured`. ``RB_ID=881612``
- `hostConnectionIdleTime`
- `hostConnectionMaxIdleTime`
- `hostConnectionMaxLifeTime`
- `hostConnectionMaxWaiters`
6.39.0
------
New Features
~~~~~~~~~~~~
* finagle-core: `com.twitter.finagle.Failure` has a new flag, `NonRetryable`,
which signifies that a request should not be retried. The flag is respected by
all of Finagle's retry mechanisms. ``RB_ID=878766``
* finagle-thriftmux: Allow ThriftMux.Clients to be filtered. This is supported
in the the StdStackClient but ThriftMux.Client is a StackBasedClient. ``RB_ID=874560``
* finagle-netty4: Add boolean flag `com.twitter.finagle.netty4.poolReceiveBuffers` that
enables/disables pooling of receive buffers (disabled by default). When enabled, lowers
the CPU usage and allocation rate (GC pressure) with the cost of increased memory
footprint at the startup. ``RB_ID=872940``
* finagle-netty4: Add new histogram `receive_buffer_bytes` (only enabled with pooling)
to keep track of the receive buffer sizes (useful for tuning pooling). ``RB_ID=877080``
Deprecations
~~~~~~~~~~~~
* finagle-core: `c.t.f.builder.ClientBuilder` deprecate some seldom used methods.
The same functionality is available through the Stack-based APIs or
`ClientBuilder.configured`. ``RB_ID=878009``
- `readerIdleTimeout`
- `writerIdleTimeout`
- `recvBufferSize`
- `sendBufferSize`
- `channelFactory`
- `expHostConnectionBufferSize`
* finagle-kestrel: Deprecate `c.t.f.kestrel.protocol.Kestrel()`,
`c.t.f.kestrel.protocol.Kestrel(failFast)`, and `c.t.f.kestrel.protocol.Kestrel.get()`.
To create a Kestrel client using ClientBuilder, use `.stack(c.t.f.Kestrel.client)`.
``RB_ID=870686``
Breaking API Changes
~~~~~~~~~~~~~~~~~~~~
* finagle-core: The constructors for both `c.t.f.netty3.Netty3Listener` and
`c.t.f.netty3.Netty3Transporter` now take `Stack.Params` instead of
individual parameters. ``RB_ID=871251``
* finagle-thrift: The c.t.f.thrift.legacy package has been removed which included
the public types `ThriftCall`, `ThriftReply`, and `ThriftCallFactory`.
``RB_ID=873982``
Runtime Behavior Changes
~~~~~~~~~~~~~~~~~~~~~~~~
* finagle-core: Tolerate TraceIds that are greater than 64 bits in preparation of
moving to 128 bit ids. ``RB_ID=874365``
* finagle-http: `c.t.f.http.service.HttpResponseClassifier.ServerErrorsAsFailures` now
classifies a retryable nack as a `ResponseClass.RetryableFailure`. ``RB_ID=869182``
* finagle-http: `c.t.f.Http.{Client,Server}` is moving towards treating HTTP
5xx status codes as failures via
`c.t.f.http.service.HttpResponseClassifier.ServerErrorsAsFailures`. This can
be disabled by setting the toggle "com.twitter.finagle.http.serverErrorsAsFailures"
to `0.0` or explicitly setting it using `withResponseClassifier`.
``RB_ID=869303``, ``RB_ID=875367``
* finagle-http: `c.t.f.http.HttpServerDispatcher` now removes the bodies from responses
to HEAD requests in order to avoid a HTTP protocol error and logs the event at level
error. Associated with this, the `c.t.f.http.filter.HeadFilter` will now strip the body
from a chunked response, but in these cases the `Writer` associated with the response
will receive a `ReaderDiscarded` exception if a write is attempted after the filter has
run. ``RB_ID=872106``
* finagle-thrift: Also track response failures in the
`c.t.finagle.thrift.ThriftServiceIface#statsFilter` in addition to successful
responses that encode an Error or Exception. ``RB_ID=879075``
Bug Fixes
~~~~~~~~~
* finagle-http: Fix issue in `c.t.finagle.http.RequestBuilder` when the URI host contains
underscores. ``RB_ID=870978``
* finagle-http: A connection for HTTP/1.0 or non-keep-alive requests is now closed
gracefully so that all requests that have been issued received responses.
``RB_ID=868767``
* finagle-http: The HTTP/1.x server dispatcher no longer clobbers 'Connection: close'
headers set by a service, resulting in the graceful shutdown of the connection.
``RB_ID=880007``
* finagle-netty4: `ChannelTransport` now drains messages before reading more data off the
transport which should reduce memory pressure in streaming protocols. ``RB_ID=872639``
6.38.0
------
New Features
~~~~~~~~~~~~
* finagle-http: `HttpNackFilter` now handles both retryable and non-retryable nacks via a new
header: "finagle-http-nonretryable-nack". These are converted to non-retryable `c.t.f.Failures`
and counted by a new counter "nonretryable_nacks". ``RB_ID=865468``
* finagle-toggle: Is no longer considered experimental. ``RB_ID=868819``
Breaking API Changes
~~~~~~~~~~~~~~~~~~~~
* finagle-kestrel: `c.t.f.kestrel.protocol.ResponseToEncoding` is now private[finagle].
``RB_ID=866612``
* finagle-memcached: `c.t.f.memcached.protocol.text.{CommandToEncoding, ResponseToEncoding}`,
`c.t.f.memcached.protocol.text.client.{AbstractDecodingToResponse, ClientTransport, DecodingToResponse}` are now private[finagle]. ``RB_ID=866612``
* finagle-netty4: Move `numWorkers` flag out of the package object so it gets a
user friendly name: `c.t.f.netty4.numWorkers` instead of `c.t.f.netty4$.package$.numWorkers`.
``RB_ID=123567``
* finagle-core: `c.t.f.netty3.WorkerPool` is no longer visible outside of `c.t.f.netty3`.
``RB_ID=123567``
* finagle-core: The `content` parameter of the `ClientSslContext` and
`ClientSslContextAndHostname` `TlsConfig` options has been renamed to `context`.
``RB_ID=868791``
Runtime Behavior Changes
~~~~~~~~~~~~~~~~~~~~~~~~
* finagle-thriftmux: Removed "<server_label>/thriftmux/downgraded_connections" and
"<server_label>/thriftmux/connections" gauges. Counters are still available at
"<server_label>/thrifmux/connects" and "<server_label>thriftmux/downgraded_connects".
``RB_ID=867459``
6.37.0
------
Deprecations
~~~~~~~~~~~~
* finagle-core: `c.t.f.Deadline` is deprecated in favor of `c.t.f.context.Deadline`.
``RB_ID=864148``
Breaking API Changes
~~~~~~~~~~~~~~~~~~~~
* finagle-core: As part of a move away from encoding/decoding in the Netty pipeline, removed
`FrameEncoder` and `FrameDecoder` types, found in `c.t.f.codec`. ``RB_ID=847716``
* finagle-core: Delete IdleConnectionFilter, which is no longer hooked up in the server, and
no longer seems to be useful. ``RB_ID=856377``
* finagle-core: Remove deprecated methods from `c.t.f.builder.ClientBuilder` ``RB_ID=864622``
- `connectionTimeout`, use `tcpConnectTimeout`
- `expFailFast`, use `failFast`
- `buildFactory`, use other `buildFactory` methods
- `build`, use other `build` methods
* finagle-exp: Abstract out parts of the DarkTrafficFilter for potential re-use.
We also canonicalize the DarkTrafficFilter stats scope which changes from
"darkTrafficFilter" to "dark_traffic_filter". E.g.:
"dark_traffic_filter/forwarded", "dark_traffic_filter/skipped", and
"dark_traffic_filter/failed". ``RB_ID=852548``
* finagle-mysql: Mysql has been promoted out of experimental. Please change all
references of com.twitter.finagle.exp.{M,m}ysql to com.twitter.finagle.{M,m}ysql
* finagle-redis: Server-side support for Redis is removed. See this finaglers@ thread
(https://groups.google.com/forum/#!topic/finaglers/dCyt60TJ7eM) for discussion.
Note that constructors for Redis commands no longer accept raw byte arrays.
``RB_ID=848815``
* finagle-redis: Redis codec (i.e., `c.t.f.Codec`) is removed. Use `c.t.f.Redis.client`
instead. ``RB_ID=848815``
New Features
~~~~~~~~~~~~
* finagle-core: Expose metrics on util's default `FuturePool` implementations
`unboundedPool` and `interruptibleUnboundedPool`:
"finagle/future_pool/pool_size", "finagle/future_pool/queue_size",
"finagle/future_pool/active_tasks", and "finagle/future_pool/completed_tasks".
``RB_ID=850652``
* finagle-core: Mux Clients now propagate the number of times the client retried
the request in the request's c.t.f.context.Context, available via
c.t.f.context.Retries. ``RB_ID=862640``
* finagle-http: HTTP Clients now propagate the number of times the client retried
the request in the request's c.t.f.context.Context, available via
c.t.f.context.Retries. ``RB_ID=864852``
* finagle-thrift: maxThriftBufferSize is now tunable via parameter for Thrift
servers. It previously only was for ThriftMux servers. ``RB_ID=860102``
Runtime Behavior Changes
~~~~~~~~~~~~~~~~~~~~~~~~
* finagle-http: HttpTransport now eagerly closes client connection after
processing non-keepalive requests.
* finagle-redis: `c.t.f.redis.Client` now uses the pipelining dispatcher. ``RB_ID=848815``
* finagle-serversets: `c.t.f.serverset2.Stabilizer` no longer uses a timer to implement
stabilization periods if the periods are 0 seconds long. ``RB_ID=861561``
* finagle-core: 'c.t.f.Failure' has a new flag, Rejected, to indicate that a given request was
rejected. All Failures generated with the Failure.rejected constructor are flagged Rejected and
Restartable. ``RB_ID=863356``
* finagle-core: `c.t.f.FixedInetResolver` now optionally retries failed DNS
lookups with provided backoff, and `c.t.f.serverset2.Zk2Resolver` uses this
retry functionality infinitely, exponentially backing off from 1 second to
5 minutes. ``RB_ID=860058``
6.36.0
------
Deprecations
~~~~~~~~~~~~
* finagle-http: Removed DtabFilter.Finagle in favor of DtabFilter.Extractor.
``RB_ID=840600``
* finagle-zipkin: Deprecate `ZipkinTracer` in favor of `ScribeZipkinTracer`.
``RB_ID=840494``
Breaking API Changes
~~~~~~~~~~~~~~~~~~~~
* finagle: Builds are now only for Java 8 and Scala 2.11. See the
`blog post <https://finagle.github.io/blog/2016/04/20/scala-210-and-java7/>`_
for details. ``RB_ID=828898``
* finagle: Finagle is no longer depending on Twitter's clone of JSR166e, JDK 8
API is used instead. ``RB_ID=833652``
* finagle-cacheresolver: package contents merged into finagle-memcached.
``RB_ID=833602``
* finagle-core: Renamed DeadlineFilter to DeadlineStatsFilter, which now only
records stats for the number of requests with exceeded deadlines, the
remaining deadline budget, and the transit latency of requests. It no longer
rejects requests and has no configuration. We have decided not to pursue
Deadline Admission Control at this time. ``RB_ID=829372``
* finagle-core: `ClientBuilder.socksProxy(SocketAddress)` is removed.
Use command line flags (see `c.t.f.socks.SocksProxyFlags.scala`) instead.
``RB_ID=834634``
* finagle-core: Removed "closechans" and "closed" counters from `ChannelStatsHandler`.
``RB_ID=835194``
* finagle-core: Removed the "load" gauge from `StatsFilter` as it was duplicated
by the "pending" gauge. ``RB_ID=835199``
* finagle-core: `c.t.finagle.NoStacktrace` is removed. Use `scala.util.control.NoStackTrace`
instead. ``RB_ID=833188``
* finagle-core: `c.t.finagle.Failure.withStackTrace` is removed. Use system property
`scala.control.noTraceSuppression` instead to fill stacktraces in Finagle's failures.
``RB_ID=833188``
* finagle-core: `c.t.f.filter.RequestSerializingFilter` is removed.
Use `c.t.f.filter.RequestSemaphoreFilter` instead. ``RB_ID=839372``
* finagle-core: `SessionParams` no longer contains `acquisitionTimeout`. Instead, it
was extracted into `ClientSessionParams`. ``RB_ID=837726``
* finagle-core: Changed visibility of PipeliningDispatcher to private[finagle]. Clients should
not be affected, since it's not a part of the end-user API. ``RB_ID=843153``.
* finagle-core: Simplified and unified the constructors for FailureAccrualFactory into
a single constructor. ``RB_ID=849660``
* finagle-http: Deprecate channelBufferUsageTracker in favor of maxRequestSize.
``RB_ID=831233``
* finagle-http: HttpClientDispatcher, HttpServerDispatcher, and
ConnectionManager are no longer public. ``RB_ID=830150``
* finagle-redis: Deprecated methods have been removed from the client API.
``RB_ID=843455``
* finagle-redis: `c.t.f.redis.*Commands` traits are now package-private.
``RB_ID=843455``
* finagle-redis: Replace `ChannelBuffer` with `Buf` in client's:
- `HashCommands`: ``RB_ID=843596``
- `ListCommands`: ``RB_ID=844596``
- `BtreeSortedSetCommands`: ``RB_ID=844862``
- `HyperLogLogCommands`: ``RB_ID=844945``
- `PubSubCommands`: ``RB_ID=845087``
- `SetCommands`: ``RB_ID=845578``
- `SortedSetCommands`: ``RB_ID=846074``
* finagle-thrift: As part of the migration off of `Codec`, remove
`c.t.f.thrift.ThriftClientBufferedCodec` and `c.t.f.thrift.ThriftClientBufferedCodecFactory`
which were used by `ClientBuilder.codec` and `ServerBuilder.codec`. Replace usage
with `ClientBuilder.stack(Thrift.client.withBufferedTransport)`
or `ServerBuilder.stack(Thrift.server.withBufferedTransport)`. ``RB_ID=838146``
* finagle-memcached: `c.t.f.memcached.Client` now uses `c.t.bijection.Bijection`
instead of `c.t.u.Bijection`. ``RB_ID=834383``
* finagle-zipkin: Moved case classes and companion objects `Span`, `ZipkinAnnotation`,
`BinaryAnnotation`, `Endpoint`, `Sampler` and `SamplingTracer` to finagle-zipkin-core.
``RB_ID=840494``
* finagle-mysql: Removed `c.t.f.exp.mysql.transport.MysqlTransporter`, as it was not useful for it
to be public. ``RB_ID=840718``
Bug Fixes
~~~~~~~~~
* finagle-core: PipeliningDispatcher now serializes "write and enqueue Promise" so it's no longer
possible for the wrong response to be given to a request. ``RB_ID=834927``
* finagle-http: Servers which aggregate content chunks (streaming == false) now return a 413
response for streaming clients who exceed the servers' configured max request size.
``RB_ID=828741``
* finagle-mysql: `c.t.f.exp.mysql.PreparedCache` now closes prepared statements when no one holds
a reference to the cached future any longer. This fixes a race condition where the cached
future could be evicted and the prepared statement closed while a user tries to use that
prepared statement. ``RB_ID=833970``
* finagle-netty4-http: Servers now see the correct client host address for requests. ``RB_ID=844076``
New Features
~~~~~~~~~~~~
* finagle-core: Added gauge, "scheduler/blocking_ms" measuring how much time,
in milliseconds, the ``com.twitter.concurrent.Scheduler`` is spending doing blocking
operations on threads that have opted into tracking. This also moves the
"scheduler/dispatches" gauge out of TwitterServer into Finagle. ``RB_ID=828289``
* finagle-core: Added a FailureAccrualPolicy that marks an endpoint
dead when the success rate in a specified time window is under the
required threshold. ``RB_ID=829984``
* finagle-core: `StackServer` now installs an `ExpiringService` module by default. This
allows servers to have control over session lifetime and brings the `StackServer` to
feature parity with `ServerBuilder`. ``RB_ID=837726``
* finagle-exp: Changed DarkTrafficFilter to forward interrupts to dark service. ``RB_ID=839286``
* finagle-http: ContextFilter and Dtab-extractor/injector logic has been moved from
the http dispatchers into the client and server stacks. ``RB_ID=840600``
* finagle-mysql: Added a `withMaxConcurrentPreparedStatements` method to the client which lets you
specify how many prepared statements you want to cache at a time. ``RB_ID=833970``
* finagle-redis: Adds support for scripting commands. ``RB_ID=837538``
* finagle-netty4: SOCKS5 proxy support. ``RB_ID=839856``
* finagle-zipkin-core: A new module containing most of the functionality
from finagle-zipkin, leaving finagle-zipkin with only Scribe specific code
and a service loader. This allows for other transports to be implemented
in separate modules. For example the upcoming finagle-zipkin-kafka.
``RB_ID=840494``
* finagle-thriftmux: Introduce a Netty4 implementation of mux and thrift-mux.
``RB_ID=842869``
Runtime Behavior Changes
~~~~~~~~~~~~~~~~~~~~~~~~
* finagle-core: For SSLEngine implementations supplied via configuration or
created by Finagle, the setEnableSessionCreation method is no longer called.
The supplied value, true, is the default for JSSE implementations, and for
other engines this can be an unsupported operation. ``RB_ID=845765``
* finagle-core: Pipelined protocols (memcached, redis) no longer prevent
connections from being cut by interrupts. Instead, interrupts are masked
until a subsequent ten second timeout has expired without a response in the
pipeline. ``RB_ID=843153``
* finagle-core: MonitorFilter now installs the parameterized monitor, and will
no longer fail the request automatically if any exception is thrown
synchronously (like if an exception is thrown in an onSuccess or onFailure
block). This removes a race, and makes Finagle more deterministic.
``RB_ID=832979``
6.35.0
------
Deprecations
~~~~~~~~~~~~
* finagle: remove unused finagle-validate and finagle-testers packages. ``RB_ID=818726``
Runtime Behavior Changes
~~~~~~~~~~~~~~~~~~~~~~~~
* finagle-core: DeadlineFilter is now per-connection, so the max rejection percentage
is not shared across clients. This prevents a single client from exceeding the rejection
budget. ``RB_ID=813731``.
* finagle-core: The use of keytool in PEMEncodedKeyManager has been removed and instead the
keystore is being loaded from the pkcs12 file. ``RB_ID=832070``
* finagle-http: Local Dtabs are now encoded into the `Dtab-Local` header. `X-Dtab` headers
may still be read but should be considered deprecated. ``RB_ID=815092``
* finagle-thrift: Removed duplicate "thrift" label on Thrift/ThriftMux scrooge-related
server stats. ``RB_ID=816825``
Breaking API Changes
~~~~~~~~~~~~~~~~~~~~
* finagle-redis: Deprecated ChannelBuffer exposing apis for string commands. ``RB_ID=817766``.
* finagle-core: DefaultClient has been removed. Implementors should prefer `c.t.f.StackClient`
``RB_ID=812681``.
* finagle-core: When a client is created, its server set resolution is started eagerly.
``RB_ID=806940``
* finagle-core: Dentry now takes a Dentry.Prefix instead of a Path. ``RB_ID=813914``
* finagle-core: Remove `*.client.withTransport.socksProxy` param as part of the initiative to
move to CLI flags based configuration for SOCKS. ``RB_ID=842512``
* finagle-thrift/thriftmux: Thrift servers constructed using `Thrift.serveIface` now use
`Thrift.server.serveIface`. ThriftMux servers constructed using `ThriftMux.serveIface` now use
`ThriftMux.server.serveIface`. ``RB_ID=824865``
* finagle-cache-resolver: `c.t.f.cacheresolver.ZookeeperCacheNodeGroup` has been removed from the
API since we no longer check for the zookeeper data for the cache pool size to refresh for the
changes in the serverset. ``RB_ID=811190``
New Features
~~~~~~~~~~~~
* finagle-http: http 1.1 running on netty4 is configurable via `c.t.finagle.netty4.http.exp.Netty4Impl`.
It has not been tested in production and should be considered beta software. ``RB_ID=828188``
* finagle-core: Multi-line Dtabs may now contain line-oriented comments beginning with '#'.
Comments are omitted from parsed Dtabs. ``RB_ID=818752``
* finagle-http: new stack params MaxChunkSize, MaxHeaderSize, and MaxInitialLineLength
are available to configure the http codec. ``RB_ID=811129``
* finagle-mux: Mux now has support for fragmenting Tdispatch and Rdispatch payloads.
This helps with head-of-line blocking in the presence of large payloads and allows
long transmissions to be interrupted. ``RB_ID=794641``.
* finagle-core: Dtabs allow wildcard path elements in prefixes. ``RB_ID=813914``
* finagle-netty4: HTTP proxy support for any Finagle Netty 4 client. ``RB_ID=819752``
* finagle-core: Gauge for dns resolutions awaiting lookups. ``RB_ID=822410``
Bug Fixes
~~~~~~~~~
* finagle-http: Ensure that service closure is delayed until chunked response bodies
have been processed. ``RB_ID=813110``
* finagle-stats: Ensure that histogram snapshotting does not fall behind if snapshot()
is not called at least once per interval. ``RB_ID=826149``
6.34.0
------
Runtime Behavior Changes
~~~~~~~~~~~~~~~~~~~~~~~~
* finagle-core: GenSerialClientDispatcher fails pending and subsequent requests when
its underlying transport closes. ``RB_ID=807590``
New Features
~~~~~~~~~~~~
* finagle-core: Include upstream/downstream addresses/client ids and request trace id
in exceptions that extend `c.t.f.HasRemoteInfo` (including `c.t.f.SourcedException`),
accessible via the `remoteInfo` value. ``RB_ID=797082``
* finagle-core: Introduce `c.t.f.service.ResponseClassifier` for HTTP servers,
which allows developers to give Finagle the additional application specific knowledge
necessary in order to properly classify responses.``RB_ID=800179``
* finagle: Export two new histograms: `request_payload_bytes` and `response_payload_bytes`
for the following protocols: HTTP (non-chunked), Mux, ThriftMux and Thrift. ``RB_ID=797821``
* finagle-core: Define `c.t.f.Address` to represent an endpoint's physical location.
Resolvers and namers may attach metadata such as weight to individual endpoint addresses.
``RB_ID=792209``
* finagle-http: Introduce convenience extractors to pattern match `c.t.f.http.Response.status`
against the different categories. ``RB_ID=802953``
* finagle-http: Add `toBoolean` method in `StringUtil` to parse strings to boolean consistently.
``RB_ID=804056``
* finagle-http: Servers now actually decompress requests when decompression is turned on.
``RB_ID=810629``
* finagle-redis: Add support for SENTINEL commands. ``RB_ID=810663``
* finagle-redis: Support for Pub/Sub. ``RB_ID=810610``
Breaking API Changes
~~~~~~~~~~~~~~~~~~~~
* finagle-core: `c.t.f.Codec.prepareConnFactory(ServiceFactory)` is marked `final`, override
`c.t.f.Codec.prepareConnFactory(ServiceFactory, Stack.Params)` instead. ``RB_ID=797821``
* finagle-core: `c.t.f.Codec.newClientDispatcher(Transport)` is marked `final`, override
`c.t.f.Codec.newClientDispatcher(Transport, Stack.Params)` instead. ``RB_ID=797821``
* finagle-core: Removed deprecations: ``RB_ID=800974``
- Removed `c.t.f.Service.release`, replace usage with `Service.close()`.
- Removed `c.t.f.ServiceFactory.make`, replace usage with `ServiceFactory.apply`.
- Removed `c.t.f.ProxyServiceFactory`, replace usage with `ServiceFactoryProxy`.
- Removed deprecated `c.t.f.service.FailureAccrualFactory` constructor.
- Removed `c.t.f.netty3.ChannelBufferBuf.apply`, replace usage with `ChannelBufferBuf.Owned.apply`.
- Removed `c.t.f.util.InetAddressUtil.Loopback`, replace usage with `java.net.InetAddress.getLoopbackAddress`.
- Removed `c.t.f.tracing.TracingFilter`, replace usage with `TraceInitializationFilter` and `(Client|Server)TracingFilter`.
* finagle-core: `c.t.f.Addr.Bound.addr` type changed from `Set[SocketAddress]` to
`Set[c.t.f.Address]`. We provide a migration guide below for the most common cases.
Callers of `c.t.f.Addr.Bound.addr` must handle `Set[c.t.f.Address]` instead of
`Set[SocketAddresses]`. If you do something with the `SocketAddress` and expect the underlying
type to be `InetSocketAddress`, use `c.t.f.Address.Inet.addr` to get the underlying
`InetSocketAddress`.
`c.t.f.Addr` constructors and `c.t.f.Name.bound` method now accept `c.t.f.Address` instead
of `SocketAddress`. For most cases, wrapping the `InetSocketAddress` in an `Address.Inet`
will fix the compile error.
Any other `SocketAddress` subclass is currently incompatible with `c.t.f.Address`. Instead,
you should encode any additional information in the metadata field of `c.t.f.Address.Inet`
or `c.t.f.exp.Address.ServiceFactory`. ``RB_ID=792209``
* finagle-core: Delete `c.t.f.ServiceFactorySocketAddress` and replace usages with
`c.t.f.exp.Address.ServiceFactory`. ``RB_ID=792209``
* finagle-core: Delete `c.t.f.WeightedSocketAddress` and instead use
`c.t.f.addr.WeightedAddress` to represent address weights. ``RB_ID=792209``
* finagle-core: `c.t.f.builder.ClientBuilder.hosts` takes a Seq of `InetSocketAddress` instead of
`SocketAddress`. If you get a compile error, change the static type to `InetSocketAddress` if
you can. Otherwise, cast it at runtime to `InetSocketAddress`. ``RB_ID=792209``
* finagle-core: `c.t.f.client.Transporter.EndpointAddr` takes a `c.t.f.Address` as its
parameter instead of `SocketAddress`. ``RB_ID=792209``
* finagle-core: `c.t.f.service.FauilureAccrualFactory.Param(FailureAccrualPolicy)` is removed -
it's not safe to configure Failure Accrual with a shareable instance of the policy, use
`() => FailureAccrualPolicy` instead. ``RB_ID=802953``
* finagle-core: `$Client.withSessionQualifier.failureAccrualPolicy` has been removed from the API
since it enables an experimental feature (use Stack's `.configured` API instead). ``RB_ID=802953``
* finagle-core: `c.t.f.service.exp.FailureAccrualPolicies` (Java-friendly API) has been removed -
use `c.t.f.service.exp.FailureAccrualPolicy` instead.
* finagle-core: DefaultServer is removed. Protocol implementors should use StackServer instead.
``RB_ID=811918``
* finagle-memcached: `c.t.f.memcached.protocol.text.Memcached` no longer takes a `StatsReceiver`,
pass it to a `(Client/Server)Builder` instead. ``RB_ID=797821``
* finagle-redis: `c.t.f.redis.Redis` no longer takes a `StatsReceiver`, pass it to a
`(Client/Server)Builder` instead. ``RB_ID=797821``
* finagle-core: `c.t.f.http.MapHeaderMap` no longer takes a `mutable.Map[String, Seq[String]]` as
a constructor parameter. `apply` method provides a similar functionality.
Bug Fixes
~~~~~~~~~
* finagle-core: Fixed `getAll` method on `c.t.f.http.MapHeaderMap`, now it is case insensitive.
`apply` method was altering the provided header names. This is fixed it is now possible to
iterate on the original header names.
6.33.0
------
New Features
~~~~~~~~~~~~
* finagle-core: Introduce the `c.t.f.service.PendingRequestFactory` module in the client Stack.
The module allows clients to limit the number of pending requests per connection. It is disabled
by default. ``RB_ID=795491``
* finagle-core: Introduce the `c.t.f.filter.ServerAdmissionControl` module in the server Stack,
which is enabled through the param `c.t.f.param.EnableServerAdmissionControl`. Users can define
their own admission control filters, which reject requests when the server operates beyond
its capacity. These rejections apply backpressure and allow clients to retry requests on
servers that may not be over capacity. The filter implementation should define its own logic
to determine over capacity. One or more admission control filters can be installed through
the `ServerAdmissionControl.register` method. ``RB_ID=776385``
* finagle-core: Introduce `c.t.f.service.ResponseClassifier` which allows developers to
give Finagle the additional application specific knowledge necessary in order to properly
classify them. Without this, Finagle can only safely make judgements about transport
level failures. This is now used by `StatsFilter` and `FailureAccrualFactory` so that
application level failures can be used for both success metrics and failure accrual.
``RB_ID=772906``
* finagle-core: Added a new 'Endpoints' section on client pages, listing the weights, paths,
and resolved endpoints for each dtab.``RB_ID=779001``
* finagle-core: Introduce discoverable stack params which are available on every client/server
via the `with`-prefixed methods. ``RB_ID=781833``
* finagle-memcached: Added `c.t.f.memcached.BaseClient.checkAndSet` which exposes the difference
between a conflict and a not found result.
* finagle-mux: Add a Wireshark dissector that can decode Mux messages. ``RB_ID=779482``
* finagle-stats: Define flag `c.t.f.stats.statsFilterFile` as GlobalFlag[Set[File]] to take
comma-separated multiple files. ``RB_ID=793397``
* finagle-mux: Tinit/Rinit are now available and permit feature negotiation. ``RB_ID=793350``
Deprecations
~~~~~~~~~~~~
* finagle-memcached: `c.t.f.memcached.BaseClient.cas` is deprecated in favor of the richer
`checkAndSet` method.
Breaking API Changes
~~~~~~~~~~~~~~~~~~~~
* finagle-core: All the deprecated exceptions from `Exceptions.scala` have been removed.
``RB_ID=774658``
* finagle-thrift: Remove the `framed` attributes from `c.t.f.Thrift.Client` and
`c.t.f.Thrift.Server`. This behavior may now be controlled with `c.t.f.Thrift.param.Framed`.
* finagle-core: Unused `c.t.f.builder.NonShrinkingCluster` has been removed.
``RB_ID=779001``
* finagle-thrift: `c.t.f.ThriftRichClient` has a new abstract protected method
`responseClassifier: ResponseClassifier`. If your implementation does not need
this, you can implement it with `ResponseClassifier.Default`. ``RB_ID=791470``
Runtime Behavior Changes
~~~~~~~~~~~~~~~~~~~~~~~~
* finagle-thrift,thriftmux: Deserialization of Thrift responses now happens as part
of service application which means that it will now be part of the latency reported by
`StatsFilter`. The actual latency as perceived by clients will not have changed, but
for clients that spend significant time deserializing and do not have higher level
metrics this may come as a surprise. ``RB_ID=772931``
* finagle-mux,thriftmux: The default `closeTimeout` in ping based failure detection
is changed from Duration.Top to 4 seconds, to allow a session to be closed by default
when a ping response times out after 4 seconds. This allows sessions to be reestablished
when there may be a networking issue, so that it can choose an alternative networking
path instead. ``RB_ID=773649``
Breaking API Changes
~~~~~~~~~~~~~~~~~~~~
* finagle-thrift: Remove the `framed` attributes from `c.t.f.Thrift.Client` and
`c.t.f.Thrift.Server`. This behavior may now be controlled with `c.t.f.Thrift.param.Framed`.
6.32.0
------
NOT RELEASED
6.31.0
------
New Features
~~~~~~~~~~~~
* finagle-core: `c.t.f.Server` now has a `serveAndAnnounce` method that accepts a `SocketAddress`
as an address. ``RB_ID=758862``
* finagle-core: `c.t.f.service.Retries` now supports adding delay between each automatic retry.
This is configured via the `Retries.Budget`. ``RB_ID=768883``
* finagle-core: FailureAccrualFactory now uses a FailureAccrualPolicy to determine when to
mark an endpoint dead. The default policy, FailureAccrualPolicy.consecutiveFailures(),
mimicks existing functionality, and FailureAccrualPolicy.successRate() operates on the
exponentially weighted average success rate over a window of requests.``RB_ID=756921``
* finagle-core: Introduce `c.t.f.transport.Transport.Options` to configure transport-level options
(i.e., socket options `TCP_NODELAY` and `SO_REUSEADDR`). ``RB_ID=773824``