Rename asset_stream_manager to cdc_stream (#27)

Fixes #13

cdc_stream/stop_command.cc

@@ -0,0 +1,75 @@
+// Copyright 2022 Google LLC
+//
+// 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 "cdc_stream/stop_command.h"
+
+#include <memory>
+
+#include "cdc_stream/local_assets_stream_manager_client.h"
+#include "cdc_stream/session_management_server.h"
+#include "common/log.h"
+#include "common/path.h"
+#include "common/status_macros.h"
+#include "lyra/lyra.hpp"
+
+namespace cdc_ft {
+namespace {
+constexpr int kDefaultVerbosity = 2;
+}  // namespace
+
+StopCommand::StopCommand(int* exit_code)
+    : BaseCommand("stop", "Stops a streaming session", exit_code) {}
+
+StopCommand::~StopCommand() = default;
+
+void StopCommand::RegisterCommandLineFlags(lyra::command& cmd) {
+  verbosity_ = kDefaultVerbosity;
+  cmd.add_argument(lyra::opt(verbosity_, "num")
+                       .name("--verbosity")
+                       .help("Verbosity of the log output, default: " +
+                             std::to_string(kDefaultVerbosity) +
+                             ". Increase to make logs more verbose."));
+
+  service_port_ = SessionManagementServer::kDefaultServicePort;
+  cmd.add_argument(
+      lyra::opt(service_port_, "port")
+          .name("--service-port")
+          .help("Local port to use while connecting to the local "
+                "asset stream service, default: " +
+                std::to_string(SessionManagementServer::kDefaultServicePort)));
+
+  cmd.add_argument(
+      lyra::arg(PosArgValidator(&user_host_dir_), "[user@]host:src-dir")
+          .required()
+          .help("Linux host and directory to stream to"));
+}
+
+absl::Status StopCommand::Run() {
+  LogLevel level = Log::VerbosityToLogLevel(verbosity_);
+  ScopedLog scoped_log(std::make_unique<ConsoleLog>(level));
+  LocalAssetsStreamManagerClient client(service_port_);
+
+  std::string user_host, mount_dir;
+  RETURN_IF_ERROR(LocalAssetsStreamManagerClient::ParseUserHostDir(
+      user_host_dir_, &user_host, &mount_dir));
+
+  absl::Status status = client.StopSession(user_host, mount_dir);
+  if (status.ok()) {
+    LOG_INFO("Stopped streaming session to '%s:%s'", user_host, mount_dir);
+  }
+
+  return status;
+}
+
+}  // namespace cdc_ft