示例#1
0
// Stage causes subsequent calls to Deploy to deploy the supplied charm.
func (d *Deployer) Stage(bun *charm.Bundle, url *charm.URL) error {
	// Read present state of current.
	if err := os.MkdirAll(d.path, 0755); err != nil {
		return err
	}
	defer d.collectOrphans()
	srcExists, err := d.current.Exists()
	if err != nil {
		return err
	}
	if srcExists {
		prevURL, err := ReadCharmURL(d.current)
		if err != nil {
			return err
		}
		if *url == *prevURL {
			return nil
		}
	}

	// Prepare a fresh repository for the update, using current's history
	// if it exists.
	path, err := d.newDir("update")
	if err != nil {
		return err
	}
	var repo *GitDir
	if srcExists {
		repo, err = d.current.Clone(path)
	} else {
		repo = NewGitDir(path)
		err = repo.Init()
	}
	if err != nil {
		return err
	}

	// Write the desired new state and commit.
	if err = bun.ExpandTo(path); err != nil {
		return err
	}
	if err = WriteCharmURL(repo, url); err != nil {
		return err
	}
	if err = repo.Snapshotf("Imported charm %q from %q.", url, bun.Path); err != nil {
		return err
	}

	// Atomically rename fresh repository to current.
	tmplink := filepath.Join(path, "tmplink")
	if err = os.Symlink(path, tmplink); err != nil {
		return err
	}
	return os.Rename(tmplink, d.current.Path())
}
示例#2
0
// SetCharm adds and removes charms in s. The affected charm is identified by
// charmURL, which must be revisioned. If bundle is nil, the charm will be
// removed; otherwise, it will be stored. It is an error to store a bundle
// under a charmURL that does not share its name and revision.
func (s *MockCharmStore) SetCharm(charmURL *charm.URL, bundle *charm.Bundle) error {
	base := charmURL.WithRevision(-1).String()
	if charmURL.Revision < 0 {
		return fmt.Errorf("bad charm url revision")
	}
	if bundle == nil {
		delete(s.charms[base], charmURL.Revision)
		return nil
	}
	bundleRev := bundle.Revision()
	bundleName := bundle.Meta().Name
	if bundleName != charmURL.Name || bundleRev != charmURL.Revision {
		return fmt.Errorf("charm url %s mismatch with bundle %s-%d", charmURL, bundleName, bundleRev)
	}
	if _, found := s.charms[base]; !found {
		s.charms[base] = map[int]*charm.Bundle{}
	}
	s.charms[base][charmURL.Revision] = bundle
	return nil
}
示例#3
0
func assertCharm(c *C, bun *corecharm.Bundle, sch *state.Charm) {
	c.Assert(bun.Revision(), Equals, sch.Revision())
	c.Assert(bun.Meta(), DeepEquals, sch.Meta())
	c.Assert(bun.Config(), DeepEquals, sch.Config())
}