| // Copyright 2021 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. |
| |
| package systemd |
| |
| import ( |
| "bytes" |
| "os/exec" |
| "policy-manager/pkg/sysapi" |
| "strings" |
| ) |
| |
| // SystemdClient implements the SystemdClient interface. |
| type SystemdClient struct { |
| // systemctlCmd is a string to pass appropriate command. |
| systemctlCmd string |
| } |
| |
| // NewSystemdClient returns a new SystemdClient. |
| func NewSystemdClient(systemctlCmd string) *SystemdClient { |
| return &SystemdClient{systemctlCmd} |
| } |
| |
| func (systemd *SystemdClient) IsUnitActiveRunning(name string) (bool, error) { |
| cmd := exec.Command(systemd.systemctlCmd, "is-active", name) |
| var stdout bytes.Buffer |
| cmd.Stdout = &stdout |
| |
| err := cmd.Run() |
| output := strings.TrimSpace(string(stdout.Bytes())) |
| |
| if err != nil && output != "inactive" { |
| return false, err |
| } else if output == "active" { |
| return true, nil |
| } |
| return false, nil |
| } |
| |
| func (systemd *SystemdClient) StartUnit(name string) error { |
| _, _, err := sysapi.RunCommand(systemd.systemctlCmd, "start", name) |
| return err |
| } |
| |
| func (systemd *SystemdClient) StopUnit(name string) error { |
| _, _, err := sysapi.RunCommand(systemd.systemctlCmd, "stop", name) |
| return err |
| } |