Previously, grpc-haskell used a lot of code in the form of
```
do x <- acquireResource
f x `finally` releaseResource x
```
This is not safe since you can get killed after acquiring the resource
but before installing the exception handler via `finally`. We have
seen various gRPC assertion errors and crashes on shutdown when this
got triggered.
Note that even though we can now build grpc-haskell and grpc-haskell-core
with modern tasty, the environment in which we built those test programs
did not support actually running all them successfully, due to the need to test
generated code in the context of the appropriate libraries. We do not yet
know whether test programs built with new versions of tasty would succeed
in the appropriate environment. In principle this could be discovered, but
the work involved is far from trivial, and therefore we defer it to another
time. Tests built with the old tasty still succeed.
It was not obvious from the type how many times the
final field of ClientReaderRequest would be invoked.
(Assuming it is invoked once per stream increment
results in a hang, which can be confusing.)
* Fix the output of the nixpkgs derivation
* Use the fixed-output sha256 hash for builtins.fetchTarball
This change makes the nixpkgs pin forwards compatible with Nix 1.12.x
and Nix 2.0.
* Correct the phrasing of the code comment
This is a "shallow" update, meaning that there are still several dependencies
(such as `grpc` or Haskell packages) that are still pinned and those pins might
not be necessary any longer after this change.
* Expose the max receive message length channel argument + unittest
* `ClientError` GADT ctor => `ClientErrorResponse`, expose `ClientError`
Prior to this commit, the name `ClientError` was both:
- The name of a data constructor name for the `ClientResult` GADT
- A name of an internal sum type for capturing different kinds of client
errors
We want to expose the latter to users of the library, and so expose the latter
and rename the former.
* Remove unused `MultiWayIf` lang ext
Instead of making a blocking foreign call without a timeout, we set a
timeout of one second. This way, the thread returns in Haskell code (and
thus is interruptible) at least every second. This is useful in order to
be able to kill `Server`s, see
https://github.com/awakesecurity/gRPC-haskell/issues/22.
* Make withServer provide the actual port
Again, useful to make a server listen on any available port by giving it
port zero (for testing).
* Re-introduce check on server port
* Add port field to Server
* Style: Remove unneeded newline
* Revert changes in tests
* Squash merge from branch `joel-fix-build-issues-and-broken-tests`
* Update `proto3-wire` and `proto3-suite` refs in `stack.yaml`
* Update `proto3-wire` and `proto3-suite` refs via `cabal2nix` for `nix` builds
* Remove `compile-proto-file` from the repo, as it is now available via `proto3-suite`
* Update `proto3-suite` ref in `stack.yaml`
* Update `proto3-suite` ref via `cabal2nix` for `nix` builds
* Update `proto3-suite` and `proto3-wire` gitrevs
* Regenerate Echo and Arithmetic example modules from their respective .protos
* Fix typo
We no longer require the `--with-gcc=clang` flag and it can cause
failed builds such as the one described in #19. I tested that the
`cabal` workflow works on OS X and NixOS without this flag
* add basic tutorial, re-export client stuff in HighLevel.Generated
* add a relative link in README.md
* forgot to document the language extensions
* cabal file fixup
* more context to compile-proto-file
* haskell syntax highlighting in markdown
* link to gRPC official tutorials for basic concepts
* add a note on how to build the examples
* prominent notice of required gRPC version
* fix typo
* do some error handling, show how to run the example executables
* use mapM
* update for reorganized headers in gRPC v1.1: https://github.com/grpc/grpc/pull/7559
* update nix files
* rename all gpr_slice to grpc_slice since we can't be backwards compatible anyway
* use gRPC 1.1.4
* now compatible with gRPC 1.2.0
* use nixpkgs 17.03 to get protobuf3_2, newer proto3-* deps, fix some warnings
* another warning
* Update `proto3-suite` gitrev in `stack.yaml` to `8db2ceb8c48a3f8dc2cbdc492d1e8cbaf8b62a15`
* Update `proto3-suite` gitrev in `nix/proto3-suite.nix` to `8db2ceb8c48a3f8dc2cbdc492d1e8cbaf8b62a15`
* Regenerate `Echo.hs` via new `proto3-suite` + `compile-proto-file`
* Remove additional warnings
* Pin nixpkgs to `7ae9da426924537755ce9164fd5b5f81ce16a1c3`; minor documentation tweaks
* Remove use of `fetchgitPrivate` from `proto3-suite` toplevel pkg override attr def
