grpc c++ demo

1 Setup

https://bazel.build/ https://github.com/bazelbuild/bazel/releases https://visualstudio.microsoft.com/downloads/

windows

$ bazel --version
bazel 7.3.2

export BAZEL_VC="C:\Program Files\Microsoft Visual Studio\2022\Community\VC"

2 Build

https://github.com/grpc/grpc/blob/master/BUILDING.md#build-from-source

export proxy_port=56458
export http_proxy=127.0.0.1:$proxy_port
export https_proxy=127.0.0.1:$proxy_port

echo $https_proxy

$ sh cpu_core_num.sh 
CPU cores=16

2.1 build hello_cc_grpc

cd hello-grpc-cpp
bazel clean --expunge 
# hello_cc_grpc -> hello_cc_proto -> hello_proto
bazel build --jobs=32 ///protos:hello_cc_grpc

$ ls bazel-bin/protos/
_objs/             hello_cc_grpc.lib-2.params  landing.grpc.pb.h  landing.pb.h
hello_cc_grpc.lib  landing.grpc.pb.cc          landing.pb.cc

hello_cc_grpc dependencies

https://mermaid.js.org/syntax/flowchart.html

flowchart LR

subgraph BUILD
    direction TB
    cc_grpc_library --> com_github_grpc_grpc
end

subgraph MODULE
    direction BT
    com_github_grpc_grpc' --> grpc
    grpc --> rules_python
    rules_python --> rules_go
    rules_go --> protobuf
    protobuf --> googleapis
end

BUILD --> MODULE

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2.2 build hello_utils

bazel build --compiler=$BAZEL_VC --jobs=32 ///common:hello_utils

hello_utils dependencies

flowchart LR
    subgraph BUILD
        hello_utils --> hello_cc_grpc[[//protos:hello_cc_grpc]]
        hello_utils --> com_github_google_glog
        hello_utils --> com_google_absl
        hello_utils --> com_google_protobuf
    end
    subgraph MODULE
        com_github_google_glog --> glog
        com_google_absl --> abseil-cpp
        com_google_protobuf --> protobuf
    end

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2.3 build hello_conn

bazel build --compiler=$BAZEL_VC --jobs=32 ///common:hello_conn

hello_conn dependencies

flowchart LR
    subgraph BUILD
        hello_conn --> hello_utils[[:hello_utils]]
        hello_conn --> hello_cc_grpc[[//protos:hello_cc_grpc]]
        hello_conn --> com_github_google_glog
        hello_conn --> com_google_absl
    end
    subgraph MODULE
        com_github_google_glog --> glog
        com_google_absl --> abseil-cpp
    end

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2.4 build hello_server/client

export proxy_port=56458
export http_proxy=127.0.0.1:$proxy_port
export https_proxy=127.0.0.1:$proxy_port

bazel build --jobs=32  ///:hello_server ///:hello_client

hello_server/client dependencies

flowchart LR
    subgraph BUILD
        hello_server --> hello_conn[[//common:hello_conn]]
        hello_server --> hello_utils[[//common:hello_utils]]
        hello_server --> hello_cc_grpc[[//protos:hello_cc_grpc]]
        hello_server --> catch2
        hello_server --> com_github_grpc_grpc
    end
    subgraph MODULE
        catch2 --> catch2'
        com_github_grpc_grpc --> grpc
    end
    subgraph WORKSPACE
        com_github_grpc_grpc --> grpc
    end

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3 Run

sh server_start.sh

sh client_start.sh

Build Error on Windows

ERROR: C:/users/feuye/_bazel_feuye/7zpmwd6n/external/grpc~~grpc_repo_deps_ext~envoy_api/envoy/extensions/load_balancing_policies/client_side_weighted_round_robin/v3/BUILD:7:18: Compiling external/grpc~~grpc_repo_deps_ext~envoy_api/envoy/extensions/load_balancing_policies/client_side_weighted_round_robin/v3/client_side_weighted_round_robin.upb_minitable.c failed: (Exit 2): cl.exe failed: error executing CppCompile command (from target @@grpc~~grpc_repo_deps_ext~envoy_api//envoy/extensions/load_balancing_policies/client_side_weighted_round_robin/v3:pkg) C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.41.34120\bin\HostX64\x64\cl.exe ... (remaining 1 argument skipped)
Microsoft (R) C/C++ Optimizing Compiler Version 19.41.34120 for x64
Copyright (C) Microsoft Corporation.  All rights reserved.

cl : Command line error D8022 : cannot open 'bazel-out/x64_windows-fastbuild/bin/external/grpc~~grpc_repo_deps_ext~envoy_api/envoy/extensions/load_balancing_policies/client_side_weighted_round_robin/v3/_objs/pkg.upb_minitable/client_side_weighted_round_robin.upb_minitable.obj.params'