Revert "Add support for systemd socket activation (#30485)" (#31617)

This reverts commit a638c407bb9da4626e686794892ac613f25f4486.

4 files changed, 0 insertions, 275 deletions

diff --git a/examples/cpp/features/sd_sock_act/BUILD b/examples/cpp/features/sd_sock_act/BUILD
deleted file mode 100644
index b1c5cbcdbf..0000000000
--- a/examples/cpp/features/sd_sock_act/BUILD
+++ /dev/null
@@ -1,34 +0,0 @@
-# Copyright 2022 the gRPC authors.
-#
-# 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.
-
-licenses(["notice"])
-
-cc_binary(
-    name = "client",
-    srcs = ["client.cc"],
-    deps = [
-        "//:grpc++",
-        "//examples/protos:helloworld_cc_grpc",
-    ],
-)
-
-cc_binary(
-    name = "server",
-    srcs = ["server.cc"],
-    deps = [
-        "//:grpc++",
-        "//:grpc++_reflection",
-        "//examples/protos:helloworld_cc_grpc",
-    ],
-)
diff --git a/examples/cpp/features/sd_sock_act/client.cc b/examples/cpp/features/sd_sock_act/client.cc
deleted file mode 100644
index 53071e54a7..0000000000
--- a/examples/cpp/features/sd_sock_act/client.cc
+++ /dev/null
@@ -1,100 +0,0 @@
-// Copyright 2022 the gRPC authors.
-//
-// 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.
-
-#include <iostream>
-#include <memory>
-#include <string>
-
-#include "examples/protos/helloworld.grpc.pb.h"
-
-#include <grpcpp/grpcpp.h>
-
-using grpc::Channel;
-using grpc::ClientContext;
-using grpc::Status;
-using helloworld::Greeter;
-using helloworld::HelloReply;
-using helloworld::HelloRequest;
-
-class GreeterClient {
- public:
-  GreeterClient(std::shared_ptr<Channel> channel)
-      : stub_(Greeter::NewStub(channel)) {}
-
-  // Assembles the client's payload, sends it and presents the response back
-  // from the server.
-  std::string SayHello(const std::string& user) {
-    // Data we are sending to the server.
-    HelloRequest request;
-    request.set_name(user);
-
-    // Container for the data we expect from the server.
-    HelloReply reply;
-
-    // Context for the client. It could be used to convey extra information to
-    // the server and/or tweak certain RPC behaviors.
-    ClientContext context;
-
-    // The actual RPC.
-    Status status = stub_->SayHello(&context, request, &reply);
-
-    // Act upon its status.
-    if (status.ok()) {
-      return reply.message();
-    } else {
-      std::cout << status.error_code() << ": " << status.error_message()
-                << std::endl;
-      return "RPC failed";
-    }
-  }
-
- private:
-  std::unique_ptr<Greeter::Stub> stub_;
-};
-
-int main(int argc, char** argv) {
-  // Instantiate the client. It requires a channel, out of which the actual RPCs
-  // are created. This channel models a connection to an endpoint specified by
-  // the argument "--target=" which is the only expected argument.
-  // We indicate that the channel isn't authenticated (use of
-  // InsecureChannelCredentials()).
-  std::string target_str;
-  std::string arg_str("--target");
-  if (argc > 1) {
-    std::string arg_val = argv[1];
-    size_t start_pos = arg_val.find(arg_str);
-    if (start_pos != std::string::npos) {
-      start_pos += arg_str.size();
-      if (arg_val[start_pos] == '=') {
-        target_str = arg_val.substr(start_pos + 1);
-      } else {
-        std::cout << "The only correct argument syntax is --target="
-                  << std::endl;
-        return 0;
-      }
-    } else {
-      std::cout << "The only acceptable argument is --target=" << std::endl;
-      return 0;
-    }
-  } else {
-    target_str = "unix:/tmp/server";
-  }
-  GreeterClient greeter(
-      grpc::CreateChannel(target_str, grpc::InsecureChannelCredentials()));
-  std::string user("world");
-  std::string reply = greeter.SayHello(user);
-  std::cout << "Greeter received: " << reply << std::endl;
-
-  return 0;
-}
diff --git a/examples/cpp/features/sd_sock_act/server.cc b/examples/cpp/features/sd_sock_act/server.cc
deleted file mode 100644
index 28ec68114a..0000000000
--- a/examples/cpp/features/sd_sock_act/server.cc
+++ /dev/null
@@ -1,68 +0,0 @@
-// Copyright 2022 the gRPC authors.
-//
-// 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.
-
-#include <iostream>
-#include <memory>
-#include <string>
-
-#include "examples/protos/helloworld.grpc.pb.h"
-
-#include <grpcpp/ext/proto_server_reflection_plugin.h>
-#include <grpcpp/grpcpp.h>
-#include <grpcpp/health_check_service_interface.h>
-
-using grpc::Server;
-using grpc::ServerBuilder;
-using grpc::ServerContext;
-using grpc::Status;
-using helloworld::Greeter;
-using helloworld::HelloReply;
-using helloworld::HelloRequest;
-
-// Logic and data behind the server's behavior.
-class GreeterServiceImpl final : public Greeter::Service {
-  Status SayHello(ServerContext* context, const HelloRequest* request,
-                  HelloReply* reply) override {
-    std::string prefix("Hello ");
-    reply->set_message(prefix + request->name());
-    return Status::OK;
-  }
-};
-
-void RunServer() {
-  std::string server_address("unix:/tmp/server");
-  GreeterServiceImpl service;
-
-  grpc::EnableDefaultHealthCheckService(true);
-  grpc::reflection::InitProtoReflectionServerBuilderPlugin();
-  ServerBuilder builder;
-  // Listen on the given address without any authentication mechanism.
-  builder.AddListeningPort(server_address, grpc::InsecureServerCredentials());
-  // Register "service" as the instance through which we'll communicate with
-  // clients. In this case it corresponds to an *synchronous* service.
-  builder.RegisterService(&service);
-  // Finally assemble the server.
-  std::unique_ptr<Server> server(builder.BuildAndStart());
-  std::cout << "Server listening on " << server_address << std::endl;
-
-  // Wait for the server to shutdown. Note that some other thread must be
-  // responsible for shutting down the server for this call to ever return.
-  server->Wait();
-}
-
-int main(int argc, char** argv) {
-  RunServer();
-
-  return 0;
-}
diff --git a/examples/cpp/features/sd_sock_act/test.sh b/examples/cpp/features/sd_sock_act/test.sh
deleted file mode 100755
index 02c51cd254..0000000000
--- a/examples/cpp/features/sd_sock_act/test.sh
+++ /dev/null
@@ -1,73 +0,0 @@
-#!/usr/bin/env bash
-# Copyright 2022 gRPC authors.
-#
-# 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.
-
-# Test structure borrowed with gratitude from
-# https://github.com/grpc/grpc-go/tree/master/examples/features
-
-# Run this script as root
-
-clean() {
-    echo "Cleaning..."
-    systemctl stop sdsockact.socket
-    systemctl stop sdsockact.service
-    systemctl daemon-reload
-    rm /tmp/greeter_server
-    rm /tmp/greeter_client
-    rm /etc/systemd/system/sdsockact.service
-    rm /etc/systemd/system/sdsockact.socket
-}
-
-fail() {
-    clean
-    echo "FAIL: $@" >&2
-    exit 1
-}
-
-pass() {
-    echo "SUCCESS: $1"
-}
-
-bazel build --define=use_systemd=true //examples/cpp/features/sd_sock_act:all || fail "Failed to build sd_sock_act"
-cp ../../../../bazel-bin/examples/cpp/features/sd_sock_act/server /tmp/greeter_server
-cp ../../../../bazel-bin/examples/cpp/features/sd_sock_act/client /tmp/greeter_client
-
-cat << EOF > /etc/systemd/system/sdsockact.service
-[Service]
-ExecStart=/tmp/greeter_server
-EOF
-
-cat << EOF > /etc/systemd/system/sdsockact.socket
-[Socket]
-ListenStream=/tmp/server
-ReusePort=true
-
-[Install]
-WantedBy=sockets.target
-EOF
-
-systemctl daemon-reload
-systemctl enable sdsockact.socket
-systemctl start sdsockact.socket
-
-pushd /tmp
-./greeter_client | grep "Hello"
-if [ $? -ne 0 ]; then
-    popd
-    fail "Response not received"
-fi
-
-popd
-pass "Response received"
-clean