func addCharm(st *state.State, curl *charm.URL, ch charm.Charm) (*state.Charm, error) {
var f *os.File
name := charm.Quote(curl.String())
switch ch := ch.(type) {
case *charm.Dir:
var err error
if f, err = ioutil.TempFile("", name); err != nil {
return nil, err
}
defer os.Remove(f.Name())
defer f.Close()
err = ch.BundleTo(f)
if err != nil {
return nil, fmt.Errorf("cannot bundle charm: %v", err)
}
if _, err := f.Seek(0, 0); err != nil {
return nil, err
}
case *charm.Bundle:
var err error
if f, err = os.Open(ch.Path); err != nil {
return nil, fmt.Errorf("cannot read charm bundle: %v", err)
}
defer f.Close()
default:
return nil, fmt.Errorf("unknown charm type %T", ch)
}
digest, size, err := utils.ReadSHA256(f)
if err != nil {
return nil, err
}
if _, err := f.Seek(0, 0); err != nil {
return nil, err
}
cfg, err := st.EnvironConfig()
if err != nil {
return nil, err
}
env, err := environs.New(cfg)
if err != nil {
return nil, err
}
stor := env.Storage()
if err := stor.Put(name, f, size); err != nil {
return nil, fmt.Errorf("cannot put charm: %v", err)
}
ustr, err := stor.URL(name)
if err != nil {
return nil, fmt.Errorf("cannot get storage URL for charm: %v", err)
}
u, err := url.Parse(ustr)
if err != nil {
return nil, fmt.Errorf("cannot parse storage URL: %v", err)
}
sch, err := st.AddCharm(ch, curl, u, digest)
if err != nil {
return nil, fmt.Errorf("cannot add charm: %v", err)
}
return sch, nil
}
func addCharm(c *gc.C, st *State, series string, ch charm.Charm) *Charm {
ident := fmt.Sprintf("%s-%s-%d", series, ch.Meta().Name, ch.Revision())
curl := charm.MustParseURL("local:" + series + "/" + ident)
bundleURL, err := url.Parse("http://bundles.testing.invalid/" + ident)
c.Assert(err, gc.IsNil)
sch, err := st.AddCharm(ch, curl, bundleURL, ident+"-sha256")
c.Assert(err, gc.IsNil)
return sch
}
// AddCharm adds the ch charm with curl to the state. bundleURL must
// be set to a URL where the bundle for ch may be downloaded from. On
// success the newly added charm state is returned.
func (st *State) AddCharm(ch charm.Charm, curl *charm.URL, bundleURL *url.URL, bundleSha256 string) (stch *Charm, err error) {
// The charm may already exist in state as a placeholder, so we
// check for that situation and update the existing charm record
// if necessary, otherwise add a new record.
var existing charmDoc
err = st.charms.Find(bson.D{{"_id", curl.String()}, {"placeholder", true}}).One(&existing)
if err == mgo.ErrNotFound {
cdoc := &charmDoc{
URL: curl,
Meta: ch.Meta(),
Config: ch.Config(),
Actions: ch.Actions(),
BundleURL: bundleURL,
BundleSha256: bundleSha256,
}
err = st.charms.Insert(cdoc)
if err != nil {
return nil, fmt.Errorf("cannot add charm %q: %v", curl, err)
}
return newCharm(st, cdoc)
} else if err != nil {
return nil, err
}
return st.updateCharmDoc(ch, curl, bundleURL, bundleSha256, stillPlaceholder)
}
func checkDummy(c *gc.C, f charm.Charm, path string) {
c.Assert(f.Revision(), gc.Equals, 1)
c.Assert(f.Meta().Name, gc.Equals, "dummy")
c.Assert(f.Config().Options["title"].Default, gc.Equals, "My Title")
c.Assert(f.Actions(), gc.DeepEquals,
&charm.Actions{
map[string]charm.ActionSpec{
"snapshot": charm.ActionSpec{
Description: "Take a snapshot of the database.",
Params: map[string]interface{}{
"outfile": map[string]interface{}{
"description": "The file to write out to.",
"type": "string",
"default": "foo.bz2",
}}}}})
switch f := f.(type) {
case *charm.Bundle:
c.Assert(f.Path, gc.Equals, path)
case *charm.Dir:
c.Assert(f.Path, gc.Equals, path)
}
}
// updateCharmDoc updates the charm with specified URL with the given
// data, and resets the placeholder and pendingupdate flags. If the
// charm is no longer a placeholder or pending (depending on preReq),
// it returns ErrCharmRevisionAlreadyModified.
func (st *State) updateCharmDoc(
ch charm.Charm, curl *charm.URL, bundleURL *url.URL, bundleSha256 string, preReq interface{}) (*Charm, error) {
updateFields := bson.D{{"$set", bson.D{
{"meta", ch.Meta()},
{"config", ch.Config()},
{"actions", ch.Actions()},
{"bundleurl", bundleURL},
{"bundlesha256", bundleSha256},
{"pendingupload", false},
{"placeholder", false},
}}}
ops := []txn.Op{{
C: st.charms.Name,
Id: curl,
Assert: preReq,
Update: updateFields,
}}
if err := st.runTransaction(ops); err != nil {
return nil, onAbort(err, ErrCharmRevisionAlreadyModified)
}
return st.Charm(curl)
}
// AddLocalCharm prepares the given charm with a local: schema in its
// URL, and uploads it via the API server, returning the assigned
// charm URL. If the API server does not support charm uploads, an
// error satisfying params.IsCodeNotImplemented() is returned.
func (c *Client) AddLocalCharm(curl *charm.URL, ch charm.Charm) (*charm.URL, error) {
if curl.Schema != "local" {
return nil, fmt.Errorf("expected charm URL with local: schema, got %q", curl.String())
}
// Package the charm for uploading.
var archive *os.File
switch ch := ch.(type) {
case *charm.Dir:
var err error
if archive, err = ioutil.TempFile("", "charm"); err != nil {
return nil, fmt.Errorf("cannot create temp file: %v", err)
}
defer os.Remove(archive.Name())
defer archive.Close()
if err := ch.BundleTo(archive); err != nil {
return nil, fmt.Errorf("cannot repackage charm: %v", err)
}
if _, err := archive.Seek(0, 0); err != nil {
return nil, fmt.Errorf("cannot rewind packaged charm: %v", err)
}
case *charm.Bundle:
var err error
if archive, err = os.Open(ch.Path); err != nil {
return nil, fmt.Errorf("cannot read charm archive: %v", err)
}
defer archive.Close()
default:
return nil, fmt.Errorf("unknown charm type %T", ch)
}
// Prepare the upload request.
url := fmt.Sprintf("%s/charms?series=%s", c.st.serverRoot, curl.Series)
req, err := http.NewRequest("POST", url, archive)
if err != nil {
return nil, fmt.Errorf("cannot create upload request: %v", err)
}
req.SetBasicAuth(c.st.tag, c.st.password)
req.Header.Set("Content-Type", "application/zip")
// Send the request.
// BUG(dimitern) 2013-12-17 bug #1261780
// Due to issues with go 1.1.2, fixed later, we cannot use a
// regular TLS client with the CACert here, because we get "x509:
// cannot validate certificate for 127.0.0.1 because it doesn't
// contain any IP SANs". Once we use a later go version, this
// should be changed to connect to the API server with a regular
// HTTP+TLS enabled client, using the CACert (possily cached, like
// the tag and password) passed in api.Open()'s info argument.
resp, err := utils.GetNonValidatingHTTPClient().Do(req)
if err != nil {
return nil, fmt.Errorf("cannot upload charm: %v", err)
}
if resp.StatusCode == http.StatusMethodNotAllowed {
// API server is 1.16 or older, so charm upload
// is not supported; notify the client.
return nil, ¶ms.Error{
Message: "charm upload is not supported by the API server",
Code: params.CodeNotImplemented,
}
}
// Now parse the response & return.
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return nil, fmt.Errorf("cannot read charm upload response: %v", err)
}
defer resp.Body.Close()
var jsonResponse params.CharmsResponse
if err := json.Unmarshal(body, &jsonResponse); err != nil {
return nil, fmt.Errorf("cannot unmarshal upload response: %v", err)
}
if jsonResponse.Error != "" {
return nil, fmt.Errorf("error uploading charm: %v", jsonResponse.Error)
}
return charm.MustParseURL(jsonResponse.CharmURL), nil
}