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// -*- Mode: Go; indent-tabs-mode: t -*-
/*
* Copyright (C) 2021 Canonical Ltd
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
package systemd_test
import (
"fmt"
. "gopkg.in/check.v1"
"github.com/snapcore/snapd/interfaces"
"github.com/snapcore/snapd/interfaces/ifacetest"
"github.com/snapcore/snapd/interfaces/systemd"
"github.com/snapcore/snapd/snap"
"github.com/snapcore/snapd/snap/snaptest"
)
type specSuite struct{}
var _ = Suite(&specSuite{})
func (s *specSuite) TestAddService(c *C) {
spec := systemd.Specification{}
c.Assert(spec.Services(), IsNil)
svc1 := &systemd.Service{ExecStart: "one"}
err := spec.AddService("svc1", svc1)
c.Assert(err, IsNil)
svc2 := &systemd.Service{ExecStart: "two"}
err = spec.AddService("svc2", svc2)
c.Assert(err, IsNil)
c.Assert(spec.Services(), DeepEquals, map[string]*systemd.Service{
"svc1": svc1,
"svc2": svc2,
})
}
func (s *specSuite) TestClashingSameIface(c *C) {
info1 := snaptest.MockInfo(c, `name: snap1
version: 0
plugs:
plug1:
interface: test
`, nil)
iface := &ifacetest.TestInterface{
InterfaceName: "test",
}
svc1 := &systemd.Service{ExecStart: "one"}
svc2 := &systemd.Service{ExecStart: "two"}
iface.SystemdPermanentPlugCallback = func(spec *systemd.Specification, plug *snap.PlugInfo) error {
if err := spec.AddService("foo", svc1); err != nil {
return err
}
return spec.AddService("foo", svc2)
}
spec := systemd.Specification{}
err := spec.AddPermanentPlug(iface, info1.Plugs["plug1"])
c.Assert(err, ErrorMatches, `internal error: interface "test" has inconsistent system needs: service for "foo" used to be defined as .*, now re-defined as .*`)
}
func (s *specSuite) TestClashingTwoIfaces(c *C) {
info1 := snaptest.MockInfo(c, `name: snap1
version: 0
plugs:
plug1:
interface: test1
plug2:
interface: test2
`, nil)
iface1 := &ifacetest.TestInterface{
InterfaceName: "test1",
}
iface2 := &ifacetest.TestInterface{
InterfaceName: "test2",
}
svc1 := &systemd.Service{ExecStart: "one"}
svc2 := &systemd.Service{ExecStart: "two"}
iface1.SystemdPermanentPlugCallback = func(spec *systemd.Specification, plug *snap.PlugInfo) error {
return spec.AddService("foo", svc1)
}
iface2.SystemdPermanentPlugCallback = func(spec *systemd.Specification, plug *snap.PlugInfo) error {
return spec.AddService("foo", svc2)
}
spec := systemd.Specification{}
err := spec.AddPermanentPlug(iface1, info1.Plugs["plug1"])
c.Assert(err, IsNil)
err = spec.AddPermanentPlug(iface2, info1.Plugs["plug2"])
c.Assert(err, ErrorMatches, `internal error: interface "test2" and "test1" have conflicting system needs: service for "foo" used to be defined as .* by "test1", now re-defined as .*`)
}
func (s *specSuite) TestDifferentObjectsNotClashing(c *C) {
svc1 := &systemd.Service{ExecStart: "one and the same"}
svc2 := &systemd.Service{ExecStart: "one and the same"}
spec := systemd.Specification{}
err := spec.AddService("foo", svc1)
c.Assert(err, IsNil)
err = spec.AddService("foo", svc2)
c.Assert(err, IsNil)
}
func mockConnectedPlug(c *C, yaml string, si *snap.SideInfo, plugName string) (*interfaces.ConnectedPlug, *snap.PlugInfo) {
info := snaptest.MockInfo(c, yaml, si)
set, err := interfaces.NewSnapAppSet(info, nil)
c.Assert(err, IsNil)
if plugInfo, ok := info.Plugs[plugName]; ok {
return interfaces.NewConnectedPlug(plugInfo, set, nil, nil), plugInfo
}
panic(fmt.Sprintf("cannot find plug %q in snap %q", plugName, info.InstanceName()))
}
func mockConnectedSlot(c *C, yaml string, si *snap.SideInfo, slotName string) (*interfaces.ConnectedSlot, *snap.SlotInfo) {
info := snaptest.MockInfo(c, yaml, si)
set, err := interfaces.NewSnapAppSet(info, nil)
c.Assert(err, IsNil)
if slotInfo, ok := info.Slots[slotName]; ok {
return interfaces.NewConnectedSlot(slotInfo, set, nil, nil), slotInfo
}
panic(fmt.Sprintf("cannot find slot %q in snap %q", slotName, info.InstanceName()))
}
func (s *specSuite) TestAddMethods(c *C) {
const plugYaml = `name: snap1
version: 0
plugs:
plug1:
interface: test
`
plug, plugInfo := mockConnectedPlug(c, plugYaml, nil, "plug1")
const slotYaml = `name: snap2
version: 0
slots:
slot2:
interface: test
`
slot, slotInfo := mockConnectedSlot(c, slotYaml, nil, "slot2")
spec := systemd.Specification{}
iface := &ifacetest.TestInterface{
InterfaceName: "test",
SystemdConnectedPlugCallback: func(spec *systemd.Specification, plug *interfaces.ConnectedPlug, slot *interfaces.ConnectedSlot) error {
spec.AddService(fmt.Sprintf("%s-%s", plug.Name(), slot.Name()), &systemd.Service{ExecStart: "connected-plug"})
return nil
},
SystemdConnectedSlotCallback: func(spec *systemd.Specification, plug *interfaces.ConnectedPlug, slot *interfaces.ConnectedSlot) error {
spec.AddService(fmt.Sprintf("%s-%s", slot.Name(), plug.Name()), &systemd.Service{ExecStart: "connected-slot"})
return nil
},
SystemdPermanentPlugCallback: func(spec *systemd.Specification, plug *snap.PlugInfo) error {
spec.AddService(plug.Name, &systemd.Service{ExecStart: "permanent-plug"})
return nil
},
SystemdPermanentSlotCallback: func(spec *systemd.Specification, slot *snap.SlotInfo) error {
spec.AddService(slot.Name, &systemd.Service{ExecStart: "permanent-slot"})
return nil
},
}
err := spec.AddPermanentSlot(iface, slotInfo)
c.Assert(err, IsNil)
err = spec.AddPermanentPlug(iface, plugInfo)
c.Assert(err, IsNil)
err = spec.AddConnectedSlot(iface, plug, slot)
c.Assert(err, IsNil)
err = spec.AddConnectedPlug(iface, plug, slot)
c.Assert(err, IsNil)
c.Check(spec.Services(), DeepEquals, map[string]*systemd.Service{
"plug1-slot2": {ExecStart: "connected-plug"},
"slot2-plug1": {ExecStart: "connected-slot"},
"plug1": {ExecStart: "permanent-plug"},
"slot2": {ExecStart: "permanent-slot"},
})
}
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