# Changelog for extensible-effects-concurrent
## 0.26.1
- Documentation fixes
- `Supervisor`: Don't start a new process when a process for a child-id exists
## 0.26.0
- Introduce `ReplyTarget`
- Change the `sendReply` signature to accept a `ReplyTarget`
## 0.25.1
- Add `castSingleton` and `callSingleton`, which use the `EndpointReader` and `EmbedProtocol` type class.
- Change `toObserver` to accept an Endpoint of a protocol that embeds `Observer x`
- Add `sendEmbeddedReply`
- Add `toEmbeddedEndpoint` and `fromEmbeddedEndpoint`
- Change `StatefulServer` class definition to not add `Processes` to the effects by default
- Add forgotten re-exports to `Concurrent`
- Fix the `NFData` instance for `Pdu (Observer o)`
- Put the `Pdu` data family inside of a new type class `IsPdu`
## 0.25.0
- Improve effect type aliases and module structure, [read the details here](./ChangeLog-Details-0.25.0.md).
## 0.24.3
- Add `EmbedProtocol` related function `toEmbeddedOrigin`
## 0.24.2
- Add more `EmbedProtocol` related functions:
- `embedReplySerializer`
- `embedRequestOrigin`
- Improve documentation for `EffectfulServer`
- Improve documentation for `StatefulServer`
## 0.24.1
- Add more `EmbedProtocol` tuple instances (4-tuple, 5-tuple)
- Make `Effectful.Server` instances composable (See the `GenServerTests` for an example)
[more details in a seperate file](./ChangeLog-Details-0.24.1.md)
- Add `ProcessTitle` - every process now must have a short title text for logging
- Add `ProcessDetails` - every process can call `UpdateProcessDetails` to update
its infos about the current state of it for debugging and error tracing purposes.
- Add `GetProcessState` to retreive the `ProcessDetails` for some other process.
## 0.24.0
- Get rid of the `PrettyTypeShow` constraint in `Tangible`
- Get rid of `LogWriterEffects` and the necessity for some `UndecidableInstances` that came with it
- Add `Server` module for `Api` handling via type classes
- Add `Stateless`
- Add `GenServer`
- Reimplement `Supervisor`
## 0.23.0
- Include the process id in the console and trace log renderer
- Add a **process supervisor** similar to Erlang/OTPs simple_one_for_one supervisor.
- Fix `SingleThreadedScheduler` process linking bug: A process shall not be interrupted
when a linked process exits normally.
- Rename **ExitReason** to **Interrupt** and make the interrupt and exit handling
API more robust.
## 0.22.1
- Fix duplicated content in RFC-5424 log message renderer
## 0.22.0
- Remove `SchedulerProxy` ruins
- Make message sending strict:
Ensure that every message sent from one process to another
is reduced to normal form by the sender.
- Remove *all* lazy message selectors
- Introduce a newtype wrapper `StrictDynamic` around `Dynamic`
and export only a constructor that deeply evaluates the
value to *rnf* before converting it to a `Dynamic`
- Change the `Server` API for better system *vitality*:
- Add `callWithTimeout`: A `call` over `IO` with a `Timeout` parameter
- Add more efficient log renderer:
- `renderLogMessageBodyNoLocation`
- `renderRFC5424NoLocation`
## 0.21.2
- Fix copy-paste error: Remove the `LogsTo` constraint from `withAsyncLogWriter`
## 0.21.1
- Remove dependency to the `socket` and `socket-unix` packages
- they are marked as *broken* by in NixOS
- the code based on `network` is much shorter
- Rewrite the UDP log writer to use `network`
- Rewrite the UnixSocket log writer to use `network`
## 0.21.0
- Add more log message renderers
- Multiple extra time stamp formats
- RFC3164
- Add IO log writer for unix domain sockets, e.g. `/dev/log`
- Add IO log writer for UDP
- Extract and simplify the async logger
- Extract and simplify the file log writers
## 0.20.0
- Rewrite Logging API so that usage is not as bloated
## 0.19.1
- Fix Travis build
- Fix typos
- Fix README
## 0.19.0
- Adapt to extensible-effects-concurrent 5.0.0.1
- Update to Stackage LTS-13.13
- Improve NIX expressions
- Rewrite the logging API
- Improve Documentation
- Add Examples
## 0.18.1
- Fix inappropriate `LinkedProcessCrashed` interrupt when a process exits with `NotRecovered ProcessFinished`
## 0.18.0
- Split-up and replace `spawnLinkObservationQueue` with a simpler (but more verbose) alternative
## 0.17.0
- Rename misspelled `spawnLinkObserverationQueue` to `spawnLinkObservationQueue`
## 0.16.1
- Export `ObserverRegistry` constructors for custom event registration handling
## 0.16.0
API Stabilization and cleanup release with major API changes.
- Replace `Control.Eff.Concurrent.Api.Server` with
`Control.Eff.Concurrent.Api.Server2` and rename
`Control.Eff.Concurrent.Api.Server2` to
`Control.Eff.Concurrent.Api.Server`
- Rewrite `Observer` and related modules like `Observer.Queue`
- Remove all type classes
- Rely on `Server2`
- Remove `CallBackObserver`
- Remove the observer support code in `Server2`
- Remove the `SchedulerProxy` parameter and tell library users to enable `AllowAmbiguousTypes` and `TypeApplications`
- Remove dependent support code like `HasScheduler`
## 0.15.0
- Add `Api` `Request` and `Reply` types
- Add `RequestOrigin` which can be used in `Server2` based Api servers to queue and defer replies to `Call`s
## 0.14.3
- Export the functions introduced in 0.14.2 in `Control.Eff.Concurrent`.
## 0.14.2
- Add `Server2` functions to spawn and _link_
- Add a `Server2` function to defer the reply to a `Call`s called:
`handleCallsDeferred`
## 0.14.1
- Add Server2 based observation handling with `handleObservations`
## 0.14.0
- Fix/Improve Server2
## 0.13.2
- Add `ProcessFinished`
- Add `tryUninterrupted`
- Add simpler `Server2`
## 0.13.1
- Remove misguided `MonadCatch` constraints in the `ObservationQueueReader`
functions, and use `Interrupts` instead
## 0.13.0
- Fix bad constraints in `Queue` observer
## 0.12.2
- Fix some compiler warnings
## 0.12.1
- Fix build errors with GHC-8.6
## 0.12.0
- Add implicit SchedulerProxy
- Add flushMessages
- Add receiving with timeout
- Add process `Link`ing and `Monitoring`.
- Make the distinction between recoverable and non-recoverable exit explicit in
the type parameter of `ExitReason`, and introduce `interruptXXXX`
functions in addition to `shutdownXXXX` functions, to throw recoverable exits.
- Merge `ShutdownRequest` and `ExitReason`
- Rename `receiveLoopSuchThat` to `receiveSelectedLoop`
- Pass the exit reason to the callback passed to `receiveSelectedLoop`
- Rename `receiveMessage` to `receiveAnyMessage`
- Rename `receiveAnyLoop` to `receiveAnyLoop`
- Pass the exit reason to the callback passed to `receiveAnyLoop`
- Rename `receiveMessage` to `receiveAnyMessage`
- Rename `receiveMessageAs` to `receiveMessage`
- Rename `receiveLoop` to `receiveLoop`
- Pass the exit reason to the callback passed to `receiveAnyLoop`
- Remove `SchedulerShuttingDown`
- Improve logging for exceptions in `ForkIOScheduler`
- Fix a bug in the logging system that caused all log filters to be forgotten
when using unliftings such as `MonadBaseControl`, `MonadThrow`, `MonadCatch`
and `MonadMask`
- Fix the scheduler shutdown to not always run into the cancellation timeout
## 0.11.1
- Fix a compilation error
## 0.11.0
- Change the return type of `spawnCallbackObserver` from
`Bool` to `ApiServerCmd`
## 0.10.0
- Re-introduce a Logs Effect but keep the LogWriter Reader
- Get rid of the LogWriterProxy and the implicit argument
- Make logging stricter: require log message to be NFData instances
## 0.9.2
- Try to adapt the dependency versions to make hackage happy again
## 0.9.1
- Add smart constructors for `MessageSelector`
- Remove `ReceiveMessage` `Process` action
- Rename `ReceiveMessageSuchThat` to `ReceiveSelectedMessage`
- Improve some Show instances, e.g. ProcessId
- Rewrite Logging API:
- Vastly simplified API
## 0.9.0
- Make `ForkIOScheduler` faster and more robust
- Add `ExitReason`
- Add `ProcessState`
- Add `ShutdownRequest` type
- Rewrite logging to be a `Reader` of a `LogWriter`
- Remove pure logging, the `Logs...` constraint must be
accompanied by `Lifted IO` (or `MonadIO`) in many log functions
most prominently `logMsg`
- Add a `lmDistance` field in `LogMessage`
- Add `increaseLogMessageDistance` and `dropDistantLogMessages`
using the new `lmDistance` field
- Add a newtype for the argument to selective receives: `MessageSelector`
- Add a `makeReference` function to `Process` which will return process local
unique `Int`s
- Rename `spawnServer` to `spawnServerWithEffects` and add a simpler version of
`spawnServerWithEffects` called `spawnServer`
- Make all `ApiHandler` handler callbacks optional (by changing the type to `Maybe ...`)
- `ApiHandler` must now return an `ApiServerCmd`.
- Add `ApiServerCmd` which allows handler functions to leave to server loop without
exiting the process
- Fix `Observer.Queue`
- Rename fields in `ApiHandler`
- Add smart constructors for `ApiHandler`
## 0.8.0
- Add selective receive
- Complete `Api.Server` rewrite (simplification)
- Move examples to `./examples/` and add executables to the
cabal file
## 0.7.3
- Add `withFrozenCallStack` to exposed functions
- Add `ObserverState` type alias
## 0.7.2
- Add `ObservationQueue` utility
- Fix missing re-exports from
`Control.Eff.Concurrent.Api.Client`
in `Control.Eff.Concurrent` introduced in recent versions
## 0.7.1
- Improve call-stack support in log messages
- Expose `setLogMessageTimestamp` and `setLogMessageThreadId`
## 0.7.0
- Remove the parameter from `closeLogChannelAfter` that had the optional:
last-log-message-before-channel-closes
## 0.6.4
- Add `whereIsServer`
## 0.6.3
- Add `ServerReader` type alias
## 0.6.2
- Fix bad `containers` version boundary
## 0.6.1
- Improve Experimental Nix Expressions
## 0.6.0
- Rewrite Logging
- Improve Experimental Nix Expressions
## 0.5.0.0
- Switch to `extensible-effects` version `3.1.0.0`
- Bump to stackage LTS-12.9
- Add `Control.Eff.Log.MessageFactory`
- Add `Control.Eff.Log.Message`
## 0.4.0.0
- Switch to `extensible-effects` version `3.0.0.0`
- Improve single threaded scheduler to be more space efficient
- Add some strictness annotations
- Add `Control.Eff.Loop` with (hopefully) constant space `forever` and
`replicateM_`
- Add `Control.Eff.Concurrent`, a module that conveniently re-exports most
library functions.
## 0.3.0.2
- Improve single threaded scheduler such that the main process can return a value
## 0.3.0.1
- Fix a race condition in the SchedulerSession shutdown
- Improve the interactive scheduler session API
- Rename `SchedulerVar` -> `SchedulerSession`
- Remove `submitPrint`
## 0.3.0.0
- Add support for running and interacting with a scheduler
and it's processes from IO, for example from ghci
- Rename `yieldProcess` to `executeAndResumeOrExit`
- Add an actual `yieldProcess`, that behaves like `yield`
- Change the return type of function to `()` where applicable
to avoid all these `_ <- sendMessage...` or `void $ sendMessage`
dances.
- Add a simple logging observer: `spawnLoggingObserver`
- Removed `Control.Eff.Interactive`
- Removed most functions in `Control.Eff.ExceptionExtra`
- Make `sendMessage` and the reply in `call` strict with respect to the message
payload
## 0.2.0.3
- Improve 'Api' documentation
- Improve `LogChannel` API
- Reorganize unit tests
- Hopefully tune travis ci test parameter enough to get a stable build result
## 0.2.0.2
- Fix minor `stack upload` complaints about the cabal file
## 0.2.0.1
- Simplify IO Exception handling in `ForkIoScheduler`,
- Add many unit tests for exception, exit and shutdown
## 0.2.0.0
- Add `Spawn` to `Process`
- Merge `MessagePassing` and `Process`
- Add initial test suite
- Fix shutdown error in `ForkIoScheduler`
- Rename `Dispatcher` to `Scheduler`
- Add `receiveAnyLoop` function to `Process`
- Change `Api.Server` `serve` to loop instead of handling just one request
- Allow combining multiple `ApiHandler` such that one process can handle
multiple APIs
## 0.1.3.0
- Rename and split `GenServer` to `Api`, `Api.Client`, `Api.Server`
- Add `registerServer`, `callRegistered` and `castRegistered`
- Remove the variant of `cast` that returns a boolean
## 0.1.2.2
- Try to fix version bounds for hackage
## 0.1.2.1
- Add more documentation
- Simplify Scheduler API
- Make more exception safe
## 0.1.2.0
- Add Observer module
- Implement Exception handling
- Improve Scheduler shutdown
- Add logging support via the logging-effect library
## 0.1.1.0
- Substantial API reorganization
- Rename/Move modules
## 0.1.0.1
- Stack/Cabal/Github Cosmetics
- Travis build job
## 0.1.0.0
- Initial Version