Changelog of @hackage/ngx-export 1.7.10

1.7.10

  • Added exporter ngxExportInitHook which can be used for writing global data synchronously before the start of handling client requests.

1.7.9

  • Reify types of internal handlers from their signatures.
  • Dropped support for GHC versions older than 8.2.

1.7.8

  • Refactored to avoid using head and tail as it triggers x-partial warnings in GHC 9.8.1.

1.7.7.1

  • Added a minimal example of using exporters.

1.7.7

  • Cleanup declarations which still had explicit support for GHC 7.x.

1.7.6

  • Fancier, de-duplicated type annotations by leveraging type synonyms.
  • Applied hints proposed by hlint.

1.7.5

  • More robust pattern exhaustion check after inclusion of option -Wincomplete-uni-patterns into -Wall in GHC 9.2.1.

1.7.4

  • Function safeWaitToSetLock was moved into a new internal module NgxExport.Internal.SafeFileLock.
  • Implemented run-time choice of the best available file-lock implementation (i.e. standard POSIX F_SETLKW or F_OFD_SETLKW which is a better choice as it does not involve deadlock detection and thus better matches our purposes).
  • Catch EDEADLK inside safeWaitToSetLock to make file-locks with F_SETLKW behave more nicely.
  • Calculate positions of fields in struct flock correctly using hsc2hs directives.

1.7.3

  • Further fixes for inactive shared services waiting on file-locks.

1.7.2

  • More robust masking in async handlers. As this uses function interruptible from module Control.Exception, support of GHC versions 7.x was dropped.
  • Fixed waiting on file-locks of inactive shared services.

1.7.1

  • Added function ngxCachedPid to return the PID of the current worker process cached in Nginx.

1.7.0

  • Now basic synchronous and all asynchronous content handlers are expected to return a list of custom response headers in the 4th field of the ContentHandlerResult.
  • All asynchronous handlers get proper masking against asynchronous exceptions, which is especially important for service handlers in presence of asynchronous exceptions from service hooks.
  • Now a new StablePtr for the content type gets returned only when its value is not empty.

1.6.4

  • Added exception WorkerProcessIsExiting to signal services that Nginx is shutting down. This has replaced ThreadKilled that was used formerly in order to prevent erroneous handling of unexpectedly thrown ThreadKilled.
  • All API exceptions now derive Eq.

1.6.3

  • Added API exceptions RestartWorkerProcess and FinalizeHTTPRequest.

1.6.2

  • Added exception TerminateWorkerProcess that can be used for a little bit more graceful termination of the worker process than bare exit(2).

1.6.1

  • Upgraded Cabal version constraint.

1.6.0

  • Implemented type and role disambiguation helper to prevent segfaults in Nginx when a handler of an appropriate type (say, IOYY with a role of a synchronous handler) gets used in a wrong role (say, as an async handler).

1.5.0

  • Services are now terminated with cancelWith ThreadKilled because cancel throws AsyncCancelled starting from async-2.2.

1.4.2

  • Minor internal improvements (using tuple sections).

1.4.1

  • Corrected type of ngxCachedTimePtr.

1.4.0

  • Added a number of opaque pointers to Nginx global objects for using them in C plugins.

1.3.0

  • Export function ngxExportInstallSignalHandler to ignore SIGINT.

1.2.2

  • Returning a special error code (2) on exception ServiceHookInterrupt.

1.2.1

  • Bugfix: put unsigned integers in event channels (important for eventfd).

1.2.0

  • Added exporter ngxExportServiceHook for service hooks and exception ServiceHookInterrupt for interrupting services.

1.1.0

  • Added an asynchronous content handler with direct access to request body chunks exported with ngxExportAsyncHandlerOnReqBody.
  • Reading buffered request body from a temporary file when it's provided.

1.0.1

  • Using deepseq for really deep evaluation of resulting lazy bytestrings to prevent leaks of exceptions outside of protected code.

1.0

  • Added an asynchronous content handler exported with ngxExportAsyncHandler.
  • Content type in all content handlers gets packed in a strict bytestring now, which allows for using static strings without dynamic memory allocation.
  • Package stability tag was promoted to stable.

0.9.1.1

  • yY handler must be strict against exceptions in safeYYHandler.

0.9.1.0

  • Do not write into service event channel when Nginx is exiting.

0.9.0.0

  • Using interruptible FFI for safeWaitToSetLock to re-enable graceful shutdown with hs_exit() for shared services.

0.8.1.0

  • Function waitSetToLock from package unix calls C fcntl() unsafely which caused hangs of the whole haskell RTS when it was waiting for lock release. So this functions was reimplemented using safe semantics as safeWaitToSetLock.
  • Exported function ngxExportReleaseLockedByteString was removed because Nginx can call hs_free_stable_ptr() directly.

0.8.0.3

  • A better solution for ghc warnings set.

0.8.0.2

  • Removed constraint on template-haskell via a CPP macro (this should repair compilation for ghc-7.10).

0.8.0.0

  • Implemented shared services using waitToSetLock to get exclusive access for servicing.
  • New dependency on package monad-loops (>= 0.4.2).

0.7.0.0

Further optimizations.

  • Poke single-chunked lazy bytestrings directly into passed from Nginx buffers.
  • Specialize polymorphic functions and inline trivial functions.

0.6.1.1

  • Added -Wno-incomplete-patterns in ghc-options for older ghc versions.

0.6.1.0

  • Constructors of NgxExport were lifted to type level for all handlers to mitigate warnings on incomplete patterns.
  • COMPLETE pragmas for pattern synonyms were added for the same reason.
  • Other warnings were fixed too. Now the module builds with ghc-options -Wall -Wno-unrecognised-pragmas.

0.6.0.0

  • Lazy bytestrings contents are no longer copied when passed back to Nginx. Instead, they are passed directly along with a StablePtr to original bytestrings. This must improve performance and lower memory consumption for content handlers with large outputs.

0.5.0.0

  • All synchronous variable and content handlers were made exception safe.
  • Bugfix: evaluate results of IO handlers strictly to make sure that all exceptions will be caught.

0.4.1.0

  • Bugfix: keep calling fdWriteBuf until it writes complete buffer.

0.4.0.0

  • All asynchronous handlers can now report events via eventfd channels.
  • New dependency on package binary (>= 0.8.1.0).

0.3.2.2

  • Stricter constraints for packages base (>= 4.8 && < 5) and template-haskell (>= 2.11.0.0).

0.3.2.0

  • Versioning security: get number of required version parts from C code.

0.3.1.0

  • Added versioning support to test for compatibility in C code.

0.3.0.0

  • Added an asynchronous client request body handler exported with ngxExportAsyncOnReqBody for using in a new Nginx directive haskell_run_async_on_request_body.

0.2.5.1

  • Added signatures for type-checkers and exporters to prevent warnings when reifying in a user code with -Wmissing-signatures or -Wall enabled.

0.2.5.0

  • Added a synchronous handler in IO Monad exported with ngxExportIOYY.