Add grpc c++ client conformance tests (#512)

The minimal footprint to get a grpc-based binary that can run the
conformance tests.
To test run:
- run a test server, for example `go run cmd/serverconnect/main.go
--insecure --h1port=8080 --h2port=8081`
 - run the conformance tests `PORT=8081 bazel run //cc:grpc_client_test`

Will require follow up PRs to fully integrate into crosstest docker
images and CI.

Also note that the grpc client does not properly convert 404's into
UNIMPLEMENTED, instead returning UNKNOWN.

.bazelrc

@@ -0,0 +1,25 @@
+build --cxxopt=-std=c++17 --host_cxxopt=-std=c++17
+build --cxxopt=-fsized-deallocation
+
+# Enable matchers in googletest
+build --define absl=1
+
+build:asan --linkopt -ldl
+build:asan --linkopt -fsanitize=address
+build:asan --copt -fsanitize=address
+build:asan --copt -DADDRESS_SANITIZER=1
+build:asan --copt -D__SANITIZE_ADDRESS__
+build:asan --test_env=ASAN_OPTIONS=handle_abort=1:allow_addr2line=true:check_initialization_order=true:strict_init_order=true:detect_odr_violation=1
+build:asan --test_env=ASAN_SYMBOLIZER_PATH
+build:asan --copt -O1
+build:asan --copt -fno-optimize-sibling-calls
+build:asan --linkopt=-fuse-ld=lld
+
+build:macos --features=-supports_dynamic_linker
+
+build:clang --action_env=CC=clang --host_action_env=CC=clang
+build:clang --action_env=CXX=clang++ --host_action_env=CXX=clang++
+
+try-import %workspace%/clang.bazelrc
+try-import %workspace%/user.bazelrc
+try-import %workspace%/local_tsan.bazelrc

.gitignore

@@ -1,4 +1,5 @@
 /.tmp/
+/bazel-*
 *.pprof
 *.svg
 cover.out

Makefile

@@ -53,6 +53,7 @@ lintfix: $(BIN)/golangci-lint $(BIN)/buf ## Automatically fix some lint errors
 
 .PHONY: generate
 generate: $(BIN)/buf $(BIN)/protoc-gen-go $(BIN)/protoc-gen-connect-go $(BIN)/protoc-gen-go-grpc $(BIN)/license-header ## Regenerate code and licenses
+	rm -rf cc/gen
 	rm -rf internal/gen
 	rm -rf web/gen
 	PATH=$(abspath $(BIN)) $(BIN)/buf generate
@@ -131,12 +132,12 @@ dockercomposeclean:
 
 $(BIN)/buf: Makefile
 	@mkdir -p $(@D)
-	GOBIN=$(abspath $(@D)) $(GO) install github.com/bufbuild/buf/cmd/buf@v1.11.0
+	GOBIN=$(abspath $(@D)) $(GO) install github.com/bufbuild/buf/cmd/buf@v1.24.0
 
 $(BIN)/license-header: Makefile
 	@mkdir -p $(@D)
 	GOBIN=$(abspath $(@D)) $(GO) install \
-		  github.com/bufbuild/buf/private/pkg/licenseheader/cmd/license-header@v1.11.0
+		  github.com/bufbuild/buf/private/pkg/licenseheader/cmd/license-header@v1.24.0
 
 $(BIN)/golangci-lint: Makefile
 	@mkdir -p $(@D)

WORKSPACE.bazel

@@ -0,0 +1,19 @@
+workspace(name = "com_github_bufbuild_protovalidate")
+
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+
+http_archive(
+    name = "com_github_grpc_grpc",
+    strip_prefix = "grpc-1.56.2",
+    urls = [
+        "https://github.com/grpc/grpc/archive/v1.56.2.tar.gz",
+    ],
+)
+
+load("@com_github_grpc_grpc//bazel:grpc_deps.bzl", "grpc_deps")
+
+grpc_deps()
+
+load("@com_github_grpc_grpc//bazel:grpc_extra_deps.bzl", "grpc_extra_deps")
+
+grpc_extra_deps()

buf.gen.yaml

@@ -27,3 +27,7 @@ plugins:
     opt:
       - import_style=typescript
       - mode=grpcweb
+  - plugin: buf.build/grpc/cpp:v1.56.2
+    out: cc/gen
+  - plugin: buf.build/protocolbuffers/cpp
+    out: cc/gen

cc/.clang-format

@@ -0,0 +1,115 @@
+---
+AccessModifierOffset: -1
+AlignAfterOpenBracket: AlwaysBreak
+AlignConsecutiveMacros: false
+AlignConsecutiveAssignments: false
+AlignConsecutiveBitFields: false
+AlignConsecutiveDeclarations: false
+AlignEscapedNewlines: Left
+AlignOperands: DontAlign
+AlignTrailingComments: false
+AllowAllArgumentsOnNextLine: true
+AllowAllConstructorInitializersOnNextLine: true
+AllowAllParametersOfDeclarationOnNextLine: true
+AllowShortEnumsOnASingleLine: true
+AllowShortBlocksOnASingleLine: Never
+AllowShortCaseLabelsOnASingleLine: false
+AllowShortFunctionsOnASingleLine: Inline
+AllowShortLambdasOnASingleLine: All
+AllowShortIfStatementsOnASingleLine: AllIfsAndElse
+AllowShortLoopsOnASingleLine: false
+AlwaysBreakAfterReturnType: None
+AlwaysBreakBeforeMultilineStrings: true
+AlwaysBreakTemplateDeclarations: Yes
+BinPackArguments: false
+BinPackParameters: false
+BreakBeforeBinaryOperators: None
+BreakBeforeBraces: Attach
+BreakInheritanceList: BeforeColon
+BreakBeforeTernaryOperators: true
+BreakConstructorInitializers: BeforeColon
+BreakAfterJavaFieldAnnotations: false
+BreakStringLiterals: false
+ColumnLimit: 100
+CommentPragmas: '^ IWYU pragma:'
+CompactNamespaces: false
+ConstructorInitializerAllOnOneLineOrOnePerLine: true
+ConstructorInitializerIndentWidth: 4
+ContinuationIndentWidth: 4
+Cpp11BracedListStyle: true
+DeriveLineEnding: true
+DerivePointerAlignment: false
+DisableFormat: false
+FixNamespaceComments: true
+ForEachMacros:
+  - FOR_EACH
+  - FOR_EACH_R
+  - FOR_EACH_RANGE
+IncludeBlocks: Regroup
+IncludeCategories:
+  - Regex:           '^<(sodium|Python)\.h>$'
+    Priority:        3
+  - Regex:           '^<((arpa|net|netinet|sys|linux)\/)?[-_[:alnum:]]+\.h>$'
+    Priority:        1
+  - Regex:           '^<[\/-_[:alnum:]]+>$'
+    Priority:        2
+  - Regex:           '^<.*>$'
+    Priority:        4
+  - Regex:           '.*'
+    Priority:        5
+IncludeIsMainRegex: '((Test|Tests|_test|Bench|Benchmark|Performance)[0-9]*)?$'
+IndentCaseLabels: true
+IndentCaseBlocks: false
+IndentGotoLabels: true
+IndentPPDirectives: None
+IndentExternBlock: AfterExternBlock
+IndentWidth: 2
+IndentWrappedFunctionNames: false
+InsertTrailingCommas: None
+JavaScriptQuotes: Leave
+JavaScriptWrapImports: true
+KeepEmptyLinesAtTheStartOfBlocks: false
+MacroBlockBegin: ''
+MacroBlockEnd: ''
+MaxEmptyLinesToKeep: 1
+NamespaceIndentation: None
+ObjCBinPackProtocolList: Auto
+ObjCBlockIndentWidth: 2
+ObjCBreakBeforeNestedBlockParam: true
+ObjCSpaceAfterProperty: false
+ObjCSpaceBeforeProtocolList: false
+PenaltyBreakAssignment: 2
+PenaltyBreakBeforeFirstCallParameter: 1
+PenaltyBreakComment: 300
+PenaltyBreakFirstLessLess: 120
+PenaltyBreakString: 1000
+PenaltyBreakTemplateDeclaration: 10
+PenaltyExcessCharacter: 1000000
+PenaltyReturnTypeOnItsOwnLine: 200
+PointerAlignment: Left
+ReflowComments: true
+SortIncludes: true
+SortUsingDeclarations: true
+SpaceAfterCStyleCast: false
+SpaceAfterLogicalNot: false
+SpaceAfterTemplateKeyword: true
+SpaceBeforeAssignmentOperators: true
+SpaceBeforeCpp11BracedList: false
+SpaceBeforeCtorInitializerColon: true
+SpaceBeforeInheritanceColon: true
+SpaceBeforeParens: ControlStatements
+SpaceBeforeRangeBasedForLoopColon: true
+SpaceInEmptyBlock: false
+SpaceInEmptyParentheses: false
+SpacesBeforeTrailingComments: 1
+SpacesInAngles: false
+SpacesInConditionalStatement: false
+SpacesInContainerLiterals: true
+SpacesInCStyleCastParentheses: false
+SpacesInParentheses: false
+SpacesInSquareBrackets: false
+SpaceBeforeSquareBrackets: false
+Standard: Latest
+TabWidth: 8
+UseCRLF: false
+UseTab: Never

cc/.clang-tidy

@@ -0,0 +1,56 @@
+Checks:           '-clang-analyzer-core.NonNullParamChecker,
+                   -clang-analyzer-optin.cplusplus.UninitializedObject,
+                   abseil-*,
+                   bugprone-*
+                   clang-analyzer-core.DivideZero,
+                   misc-unused-using-decls,
+                   modernize-*,
+                   -modernize-use-trailing-return-type,
+                   performance-*,
+                   readability-*,
+                   -readability-identifier-length,
+                   -readability-else-after-return'
+
+CheckOptions:
+  - key:             bugprone-assert-side-effect.AssertMacros
+    value:           'ASSERT'
+
+  - key:             bugprone-dangling-handle.HandleClasses
+    value:           'std::basic_string_view;std::experimental::basic_string_view;absl::string_view'
+
+  - key:             modernize-use-auto.MinTypeNameLength
+    value:           '10'
+
+  - key:             readability-identifier-naming.ClassCase
+    value:           'CamelCase'
+
+  - key:             readability-identifier-naming.EnumCase
+    value:           'CamelCase'
+
+  - key:             readability-identifier-naming.EnumConstantCase
+    value:           'CamelCase'
+
+  # Ignore GoogleTest function macros.
+  - key:             readability-identifier-naming.FunctionIgnoredRegexp
+    value:           '(TEST|TEST_F|TEST_P|INSTANTIATE_TEST_SUITE_P|MOCK_METHOD|TYPED_TEST)'
+
+  - key:             readability-identifier-naming.ParameterCase
+    value:           'camelBack'
+
+  - key:             readability-identifier-naming.PrivateMemberCase
+    value:           'camelBack'
+
+  - key:             readability-identifier-naming.PrivateMemberSuffix
+    value:           '_'
+
+  - key:             readability-identifier-naming.StructCase
+    value:           'aNy_CasE'
+
+  - key:             readability-identifier-naming.TypeAliasCase
+    value:           'aNy_CasE'
+
+  - key:             readability-identifier-naming.UnionCase
+    value:           'CamelCase'
+
+  - key:             readability-identifier-naming.FunctionCase
+    value:           'aNy_CasE'

cc/BUILD.bazel

@@ -0,0 +1,38 @@
+# Copyright 2022 Buf Technologies, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+package(default_visibility = ["//cc:__subpackages__"])
+
+cc_test(
+    name = "grpc_client_test",
+    srcs = ["grpc_client_test.cc"],
+    env = {"PORT": "8081"},
+    deps = [
+        "//cc:gen-connectrpc-conformance",
+        "@com_github_grpc_grpc//:grpc++",
+        "@com_google_googleapis//google/rpc:status_cc_proto",
+        "@com_google_googletest//:gtest_main",
+    ],
+)
+
+cc_library(
+    name = "gen-connectrpc-conformance",
+    srcs = glob(["gen/connectrpc/conformance/*.cc"]),
+    hdrs = glob(["gen/connectrpc/conformance/*.h"]),
+    includes = ["gen"],
+    deps = [
+        "@com_github_grpc_grpc//:grpc++",
+        "@com_google_protobuf//:protobuf",
+    ],
+)

cc/gen/connectrpc/conformance/messages.grpc.pb.cc

@@ -0,0 +1,41 @@
+// Copyright 2022 Buf Technologies, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Generated by the gRPC C++ plugin.
+// If you make any local change, they will be lost.
+// source: connectrpc/conformance/messages.proto
+
+#include "connectrpc/conformance/messages.pb.h"
+#include "connectrpc/conformance/messages.grpc.pb.h"
+
+#include <functional>
+#include <grpcpp/support/async_stream.h>
+#include <grpcpp/support/async_unary_call.h>
+#include <grpcpp/impl/channel_interface.h>
+#include <grpcpp/impl/client_unary_call.h>
+#include <grpcpp/support/client_callback.h>
+#include <grpcpp/support/message_allocator.h>
+#include <grpcpp/support/method_handler.h>
+#include <grpcpp/impl/rpc_service_method.h>
+#include <grpcpp/support/server_callback.h>
+#include <grpcpp/impl/server_callback_handlers.h>
+#include <grpcpp/server_context.h>
+#include <grpcpp/impl/service_type.h>
+#include <grpcpp/support/sync_stream.h>
+namespace connectrpc {
+namespace conformance {
+
+}  // namespace connectrpc
+}  // namespace conformance
+

cc/gen/connectrpc/conformance/messages.grpc.pb.h

@@ -0,0 +1,46 @@
+// Copyright 2022 Buf Technologies, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef GRPC_connectrpc_2fconformance_2fmessages_2eproto__INCLUDED
+#define GRPC_connectrpc_2fconformance_2fmessages_2eproto__INCLUDED
+
+#include "connectrpc/conformance/messages.pb.h"
+
+#include <functional>
+#include <grpcpp/generic/async_generic_service.h>
+#include <grpcpp/support/async_stream.h>
+#include <grpcpp/support/async_unary_call.h>
+#include <grpcpp/support/client_callback.h>
+#include <grpcpp/client_context.h>
+#include <grpcpp/completion_queue.h>
+#include <grpcpp/support/message_allocator.h>
+#include <grpcpp/support/method_handler.h>
+#include <grpcpp/impl/proto_utils.h>
+#include <grpcpp/impl/rpc_method.h>
+#include <grpcpp/support/server_callback.h>
+#include <grpcpp/impl/server_callback_handlers.h>
+#include <grpcpp/server_context.h>
+#include <grpcpp/impl/service_type.h>
+#include <grpcpp/support/status.h>
+#include <grpcpp/support/stub_options.h>
+#include <grpcpp/support/sync_stream.h>
+
+namespace connectrpc {
+namespace conformance {
+
+}  // namespace conformance
+}  // namespace connectrpc
+
+
+#endif  // GRPC_connectrpc_2fconformance_2fmessages_2eproto__INCLUDED