Ejemplo n.º 1
0
func (s *ReadAllStateDirsSuite) TestReadAllStateDirs(c *C) {
	basedir := c.MkDir()
	relsdir := setUpDir(c, basedir, "relations", map[string]string{
		"ignored":     "blah",
		"foo-bar-123": "gibberish",
	})
	setUpDir(c, relsdir, "123", map[string]string{
		"foo-0":     "change-version: 1\n",
		"foo-1":     "change-version: 2\nchanged-pending: true\n",
		"gibberish": "gibberish",
	})
	setUpDir(c, relsdir, "456", map[string]string{
		"bar-0": "change-version: 3\n",
		"bar-1": "change-version: 4\n",
	})
	setUpDir(c, relsdir, "789", nil)
	setUpDir(c, relsdir, "onethousand", map[string]string{
		"baz-0": "change-version: 3\n",
		"baz-1": "change-version: 4\n",
	})

	dirs, err := relation.ReadAllStateDirs(relsdir)
	c.Assert(err, IsNil)
	for id, dir := range dirs {
		c.Logf("%d: %#v", id, dir)
	}
	assertState(c, dirs[123], relsdir, 123, msi{"foo/0": 1, "foo/1": 2}, "foo/1", false)
	assertState(c, dirs[456], relsdir, 456, msi{"bar/0": 3, "bar/1": 4}, "", false)
	assertState(c, dirs[789], relsdir, 789, msi{}, "", false)
	c.Assert(dirs, HasLen, 3)
}
Ejemplo n.º 2
0
// restoreRelations reconciles the supplied relation state dirs with the
// remote state of the corresponding relations.
func (u *Uniter) restoreRelations() error {
	dirs, err := relation.ReadAllStateDirs(u.relationsDir)
	if err != nil {
		return err
	}
	for id, dir := range dirs {
		remove := false
		rel, err := u.st.Relation(id)
		if state.IsNotFound(err) {
			remove = true
		} else if err != nil {
			return err
		}
		if err = u.addRelation(rel, dir); err == state.ErrCannotEnterScope {
			remove = true
		} else if err != nil {
			return err
		}
		if remove {
			// If the previous execution was interrupted in the process of
			// joining or departing the relation, the directory will be empty
			// and the state is sane.
			if err := dir.Remove(); err != nil {
				return fmt.Errorf("cannot synchronize relation state: %v", err)
			}
		}
	}
	return nil
}
Ejemplo n.º 3
0
func (s *ReadAllStateDirsSuite) TestBadStateDir(c *C) {
	basedir := c.MkDir()
	relsdir := setUpDir(c, basedir, "relations", nil)
	setUpDir(c, relsdir, "123", map[string]string{
		"bad-0": "blah: blah\n",
	})
	_, err := relation.ReadAllStateDirs(relsdir)
	c.Assert(err, ErrorMatches, `cannot load relations state from .*: cannot load relation state from .*: invalid unit file "bad-0": "changed-version" not set`)
}
Ejemplo n.º 4
0
func (s *ReadAllStateDirsSuite) TestNoDir(c *C) {
	basedir := c.MkDir()
	relsdir := filepath.Join(basedir, "relations")

	dirs, err := relation.ReadAllStateDirs(relsdir)
	c.Assert(err, IsNil)
	c.Assert(dirs, HasLen, 0)

	_, err = os.Stat(relsdir)
	c.Assert(os.IsNotExist(err), Equals, true)
}