func (e *Token) Put(c appengine.Context) (err error) {
if e.Key == nil {
panic("token: Key not set.")
}
key, err := ds.Put(c, e.Key, e)
e.Key = key
return
}
// Put encodes the Values and saves the Config to the store.
func (cnfg *Config) Put(c appengine.Context) (err error) {
if err = cnfg.encode(); err != nil {
return
}
key, err := ds.Put(c, cnfg.Key, cnfg)
cnfg.Key = key
return
}
// Put is a convience method to save the Profile to the datastore and
// updated the Updated property to time.Now().
func (u *Profile) Put(c appengine.Context) error {
// TODO add error handeling for empty Provider and ID
u.SetKey(c)
u.Updated = time.Now()
u.Encode()
key, err := ds.Put(c, u.Key, u)
u.Key = key
return err
}
// Put is a convience method to save the User to the datastore and
// updated the Updated property to time.Now(). This method should
// always be usdd when saving a user, fore it does some necessary
// preprocessing.
func (u *User) Put(c appengine.Context) (err error) {
if err = u.SetKey(c); err != nil {
return
}
u.Updated = time.Now()
u.Encode()
key, err := ds.Put(c, u.Key, u)
u.Key = key
return err
}
func (e *Email) Put(c appengine.Context) (err error) {
e.Updated = time.Now()
e.Address = strings.ToLower(e.Key.StringID())
e.Key, err = ds.Put(c, e.Key, e)
return
}
func actualInsertPeer(future *insertPeerFuture) {
defer close(future.resultChannel)
future.ctx.Debugf("[InsertPeer] Inserting peer: (hash: %s) (ID: %s) (IP: %s) (port: %d)", future.hash, future.peerID, future.ip, future.port)
changed := false
peer := new(Peer)
err := datastore.RunInTransaction(future.ctx, func(tc appengine.Context) error {
peerKey := getPeerKey(tc, future.hash, future.peerID)
if err := ds.Get(tc, peerKey, peer); err == nil {
future.ctx.Debugf("[InsertPeer] Peer already exists, updating...")
if peer.IP != future.ip {
peer.IP = future.ip
changed = true
future.ctx.Debugf("[InsertPeer] Peer's IP has changed")
}
if peer.Port != int32(future.port) {
peer.Port = int32(future.port)
changed = true
future.ctx.Debugf("[InsertPeer] Peer's port has changed")
}
currentTime := time.Now()
if !peer.Expires.After(currentTime) || peer.Expires.Sub(currentTime) <= PeerRefreshTime {
peer.Expires = time.Now().Add(PeerExpireTime).Add(PeerExpireGrace)
changed = true
future.ctx.Debugf("[InsertPeer] Peer's expire time has changed")
}
if changed {
future.ctx.Debugf("[InsertPeer] Putting peer...")
_, err := ds.Put(tc, peerKey, peer)
if err != nil {
future.ctx.Errorf("[InsertPeer] Error when putting updated peer: %s", err)
}
return err
} else {
future.ctx.Debugf("[InsertPeer] No need to update peer.")
return nil
}
} else if err != dserrors.ErrNoSuchEntity {
peer = nil
future.ctx.Errorf("[InsertPeer] Error when retrieving peer from datastore for update: %s", err)
return err
}
future.ctx.Debugf("[InsertPeer] Peer doesn't exist, creating")
peer = &Peer{
Hash: future.hash,
ID: future.peerID,
IP: future.ip,
Port: int32(future.port),
Expires: time.Now().Add(PeerExpireTime).Add(PeerExpireGrace),
}
_, err := ds.Put(tc, peerKey, peer)
if err != nil {
future.ctx.Errorf("[InsertPeer] Error when putting new peer: %s", err)
}
return err
}, nil)
if err == nil && peer != nil {
memcacheKey := getHashKey(future.ctx, future.hash)
for updatesAttempted := 1; updatesAttempted <= 3; updatesAttempted++ {
future.ctx.Debugf("[InsertPeer] Attempting cache update #%d", updatesAttempted)
var peers []*Peer
if peersItem, memcacheErr := memcache.Gob.Get(future.ctx, memcacheKey, &peers); memcacheErr == nil {
exists := false
for _, thisPeer := range peers {
if thisPeer.ID == future.peerID {
exists = true
break
}
}
if !exists {
peers = append(peers, peer)
peersItem.Object = peers
memcacheErr := memcache.Gob.CompareAndSwap(future.ctx, peersItem)
if memcacheErr == nil {
future.ctx.Debugf("[InsertPeer] Added peer to cached peer list.")
break
} else if memcacheErr == memcache.ErrCASConflict {
future.ctx.Debugf("[InsertPeer] Cached peer list conflicted during modification: %s", memcacheErr)
continue
} else if memcacheErr == memcache.ErrNotStored {
future.ctx.Debugf("[InsertPeer] Cached peer list was deleted during modification: %s", memcacheErr)
continue
} else if appengine.IsCapabilityDisabled(memcacheErr) {
future.ctx.Warningf("[InsertPeer] Memcache capability disabled when attempting to add peer to cached peer list")
continue
} else {
future.ctx.Errorf("[InsertPeer] Error when attempting to set cached peer list using CAS: %s", memcacheErr)
future.resultChannel <- memcacheErr
return
}
} else {
future.ctx.Debugf("[InsertPeer] Peer already exists in cached list.")
break
}
} else if memcacheErr == memcache.ErrCacheMiss {
future.ctx.Debugf("[InsertPeer] Peer list not cached. Creating...")
peersItem := &memcache.Item{
Key: memcacheKey,
Object: []*Peer{peer},
}
if memcacheErr := memcache.Gob.CompareAndSwap(future.ctx, peersItem); memcacheErr == nil {
future.ctx.Debugf("[InsertPeer] Peer list created")
break
} else if memcacheErr == memcache.ErrCASConflict {
future.ctx.Debugf("[InsertPeer] Cached peer list conflicted during creation: %s", memcacheErr)
continue
} else if memcacheErr == memcache.ErrNotStored {
future.ctx.Debugf("[InsertPeer] Cached peer list was deleted during creation: %s", memcacheErr)
continue
} else if appengine.IsCapabilityDisabled(memcacheErr) {
future.ctx.Warningf("[InsertPeer] Memcache capability disabled when attempting to add peer to create cached peer list")
continue
} else {
future.ctx.Errorf("[InsertPeer] Error when creating peer list: %s", memcacheErr)
future.resultChannel <- memcacheErr
return
}
} else if appengine.IsCapabilityDisabled(memcacheErr) {
future.ctx.Warningf("[InsertPeer] Memcache capability is disabled.")
break
} else {
future.ctx.Errorf("[InsertPeer] Error when attempting to get cache list for insertion: %s", memcacheErr)
future.resultChannel <- memcacheErr
return
}
}
future.ctx.Debugf("[InsertPeer] Successfully inserted peer")
} else if err != nil {
future.resultChannel <- err
}
}
func put(c appengine.Context, key *datastore.Key) (p *Perm, err error) {
p = &Perm{}
_, err = ds.Put(c, key, p)
return
}