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block_test.go
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block_test.go
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// Copyright 2015 Canonical Ltd.
// Licensed under the AGPLv3, see LICENCE file for details.
package state_test
import (
"strings"
"github.com/juju/names/v4"
jc "github.com/juju/testing/checkers"
"github.com/juju/utils/v2"
gc "gopkg.in/check.v1"
"github.com/juju/juju/state"
"github.com/juju/juju/storage"
"github.com/juju/juju/testing"
)
type blockSuite struct {
ConnSuite
}
var _ = gc.Suite(&blockSuite{})
func (s *blockSuite) SetUpTest(c *gc.C) {
s.ConnSuite.SetUpTest(c)
}
func assertNoModelBlock(c *gc.C, st *state.State) {
all, err := st.AllBlocks()
c.Assert(err, jc.ErrorIsNil)
c.Assert(all, gc.HasLen, 0)
}
func (s *blockSuite) TestNoInitialBlocks(c *gc.C) {
assertNoModelBlock(c, s.State)
}
func (s *blockSuite) assertNoTypedBlock(c *gc.C, t state.BlockType) {
one, found, err := s.State.GetBlockForType(t)
c.Assert(err, jc.ErrorIsNil)
c.Assert(found, jc.IsFalse)
c.Assert(one, gc.IsNil)
}
func (s *blockSuite) assertModelHasBlock(c *gc.C, st *state.State, t state.BlockType, msg string) {
block, found, err := st.GetBlockForType(t)
c.Assert(err, jc.ErrorIsNil)
c.Assert(found, jc.IsTrue)
c.Assert(block, gc.NotNil)
c.Assert(block.Type(), gc.Equals, t)
tag, err := block.Tag()
c.Assert(err, jc.ErrorIsNil)
m, err := st.Model()
c.Assert(err, jc.ErrorIsNil)
c.Assert(tag, gc.Equals, m.ModelTag())
c.Assert(block.Message(), gc.Equals, msg)
}
func (s *blockSuite) switchOnBlock(c *gc.C, t state.BlockType, message ...string) {
m := strings.Join(message, " ")
err := s.State.SwitchBlockOn(state.DestroyBlock, m)
c.Assert(err, jc.ErrorIsNil)
}
func (s *blockSuite) TestSwitchOnBlock(c *gc.C) {
s.switchOnBlock(c, state.DestroyBlock, "some message")
s.assertModelHasBlock(c, s.State, state.DestroyBlock, "some message")
}
func (s *blockSuite) TestSwitchOnBlockAlreadyOn(c *gc.C) {
s.switchOnBlock(c, state.DestroyBlock, "first message")
s.switchOnBlock(c, state.DestroyBlock, "second message")
s.assertModelHasBlock(c, s.State, state.DestroyBlock, "second message")
}
func (s *blockSuite) switchOffBlock(c *gc.C, t state.BlockType) {
err := s.State.SwitchBlockOff(t)
c.Assert(err, jc.ErrorIsNil)
}
func (s *blockSuite) TestSwitchOffBlockNoBlock(c *gc.C) {
s.switchOffBlock(c, state.DestroyBlock)
assertNoModelBlock(c, s.State)
s.assertNoTypedBlock(c, state.DestroyBlock)
}
func (s *blockSuite) TestSwitchOffBlock(c *gc.C) {
s.switchOnBlock(c, state.DestroyBlock)
s.switchOffBlock(c, state.DestroyBlock)
assertNoModelBlock(c, s.State)
s.assertNoTypedBlock(c, state.DestroyBlock)
}
func (s *blockSuite) TestNonsenseBlocked(c *gc.C) {
bType := state.BlockType(42)
// This could be useful for entity blocks...
s.switchOnBlock(c, bType)
s.switchOffBlock(c, bType)
// but for multiwatcher, it should panic.
c.Assert(func() { bType.ToParams() }, gc.PanicMatches, ".*unknown block type.*")
}
func (s *blockSuite) TestMultiModelBlocked(c *gc.C) {
// create another model
_, st2 := s.createTestModel(c)
defer st2.Close()
// switch one block type on
t := state.ChangeBlock
msg := "another model tst"
err := st2.SwitchBlockOn(t, msg)
c.Assert(err, jc.ErrorIsNil)
s.assertModelHasBlock(c, st2, t, msg)
//check correct model has it
assertNoModelBlock(c, s.State)
s.assertNoTypedBlock(c, t)
}
func (s *blockSuite) TestAllBlocksForController(c *gc.C) {
_, st2 := s.createTestModel(c)
defer st2.Close()
err := st2.SwitchBlockOn(state.ChangeBlock, "block test")
c.Assert(err, jc.ErrorIsNil)
err = s.State.SwitchBlockOn(state.ChangeBlock, "block test")
c.Assert(err, jc.ErrorIsNil)
blocks, err := s.State.AllBlocksForController()
c.Assert(err, jc.ErrorIsNil)
c.Assert(len(blocks), gc.Equals, 2)
}
func (s *blockSuite) TestRemoveAllBlocksForController(c *gc.C) {
_, st2 := s.createTestModel(c)
defer st2.Close()
err := st2.SwitchBlockOn(state.ChangeBlock, "block test")
c.Assert(err, jc.ErrorIsNil)
err = s.State.SwitchBlockOn(state.ChangeBlock, "block test")
c.Assert(err, jc.ErrorIsNil)
err = s.State.RemoveAllBlocksForController()
c.Assert(err, jc.ErrorIsNil)
blocks, err := s.State.AllBlocksForController()
c.Assert(err, jc.ErrorIsNil)
c.Assert(len(blocks), gc.Equals, 0)
}
func (s *blockSuite) TestRemoveAllBlocksForControllerNoBlocks(c *gc.C) {
_, st2 := s.createTestModel(c)
defer st2.Close()
err := st2.RemoveAllBlocksForController()
c.Assert(err, jc.ErrorIsNil)
blocks, err := st2.AllBlocksForController()
c.Assert(err, jc.ErrorIsNil)
c.Assert(len(blocks), gc.Equals, 0)
}
func (s *blockSuite) TestModelUUID(c *gc.C) {
st := s.Factory.MakeModel(c, nil)
defer st.Close()
err := st.SwitchBlockOn(state.ChangeBlock, "blocktest")
c.Assert(err, jc.ErrorIsNil)
blocks, err := st.AllBlocks()
c.Assert(err, jc.ErrorIsNil)
c.Assert(len(blocks), gc.Equals, 1)
c.Assert(blocks[0].ModelUUID(), gc.Equals, st.ModelUUID())
}
func (s *blockSuite) createTestModel(c *gc.C) (*state.Model, *state.State) {
uuid, err := utils.NewUUID()
c.Assert(err, jc.ErrorIsNil)
cfg := testing.CustomModelConfig(c, testing.Attrs{
"name": "testing",
"uuid": uuid.String(),
})
owner := names.NewUserTag("test@remote")
model, st, err := s.Controller.NewModel(state.ModelArgs{
Type: state.ModelTypeIAAS,
CloudName: "dummy",
CloudRegion: "dummy-region",
Config: cfg,
Owner: owner,
StorageProviderRegistry: storage.StaticProviderRegistry{},
})
c.Assert(err, jc.ErrorIsNil)
return model, st
}
func (s *blockSuite) TestConcurrentBlocked(c *gc.C) {
switchBlockOn := func() {
msg := ""
t := state.DestroyBlock
err := s.State.SwitchBlockOn(t, msg)
c.Assert(err, jc.ErrorIsNil)
s.assertModelHasBlock(c, s.State, t, msg)
}
defer state.SetBeforeHooks(c, s.State, switchBlockOn).Check()
msg := "concurrency tst"
t := state.RemoveBlock
err := s.State.SwitchBlockOn(t, msg)
c.Assert(err, jc.ErrorIsNil)
s.assertModelHasBlock(c, s.State, t, msg)
}