83 lines
2.4 KiB
Go
83 lines
2.4 KiB
Go
// Copyright 2015 CoreOS, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package system
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import (
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"fmt"
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"path"
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"path/filepath"
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"strings"
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"github.com/coreos/coreos-cloudinit/config"
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)
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type UnitManager interface {
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PlaceUnit(unit Unit) error
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PlaceUnitDropIn(unit Unit, dropIn config.UnitDropIn) error
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EnableUnitFile(unit Unit) error
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RunUnitCommand(unit Unit, command string) (string, error)
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MaskUnit(unit Unit) error
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UnmaskUnit(unit Unit) error
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DaemonReload() error
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}
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// Unit is a top-level structure which embeds its underlying configuration,
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// config.Unit, and provides the system-specific Destination(), Type(), and
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// Group().
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type Unit struct {
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config.Unit
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}
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// Type returns the extension of the unit (everything that follows the final
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// period).
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func (u Unit) Type() string {
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ext := filepath.Ext(u.Name)
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return strings.TrimLeft(ext, ".")
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}
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// Group returns "network" or "system" depending on whether or not the unit is
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// a network unit or otherwise.
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func (u Unit) Group() string {
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switch u.Type() {
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case "network", "netdev", "link":
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return "network"
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default:
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return "system"
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}
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}
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// Destination builds the appropriate absolute file path for the Unit. The root
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// argument indicates the effective base directory of the system (similar to a
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// chroot).
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func (u Unit) Destination(root string) string {
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return path.Join(u.prefix(root), u.Name)
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}
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// DropInDestination builds the appropriate absolute file path for the
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// UnitDropIn. The root argument indicates the effective base directory of the
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// system (similar to a chroot) and the dropIn argument is the UnitDropIn for
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// which the destination is being calculated.
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func (u Unit) DropInDestination(root string, dropIn config.UnitDropIn) string {
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return path.Join(u.prefix(root), fmt.Sprintf("%s.d", u.Name), dropIn.Name)
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}
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func (u Unit) prefix(root string) string {
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dir := "etc"
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if u.Runtime {
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dir = "run"
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}
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return path.Join(root, dir, "systemd", u.Group())
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}
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