// construct the app based on its manifest
func (c *commandStrategy) appManifest() bool {
c.app.RWMutex.Lock()
defer c.app.RWMutex.Unlock()
logging.Debug("Parsing application's manifest")
man, err := decodeManifest(c.body)
if err != nil {
logging.Error("App's manifest is invalid: %s", err)
sendManifestFail(c.app, err.Error())
return false
}
if _, exists := registry.GetInstance(man.InstanceId); exists {
logging.Error("App's instance id is already taken: %s", man.InstanceId)
sendManifestFail(c.app, fmt.Sprintf("instanceId %s is in use", man.InstanceId))
return false
}
c.app.Status = app.STATUS_DOWN
c.app.Manifest = man
registry.Register(c.app)
sendManifestOkAndDependencies(c.app)
logging.Info("App '%s' now connected with manifest parsed", c.app.Manifest.InstanceId)
return true
}
// send this message query to all targeted apps
func (c *commandStrategy) msgQuery() error {
c.app.RWMutex.RLock()
defer c.app.RWMutex.RUnlock()
logging.Debug("Processing query from %s", c.app.Manifest.InstanceId)
mq, err := parseMsgQuery(c)
if err != nil {
return err
}
msg_archive.RecordMsg(c.app, mq.id)
body := make(jsonData)
body["fromInstanceId"] = c.app.Manifest.InstanceId
body["id"] = mq.id
body["priority"] = mq.priority
body["data"] = mq.data
body["instanceId"] = mq.instanceIds
body["action"] = mq.action
body["capability"] = mq.capability.Name
// if this is an undirected query
if len(mq.instanceIds) == 0 {
// send to all providers of the capability
for _, provider := range registry.GetProviders(mq.capability) {
provider.Send("MSG_QUERY", body)
}
} else {
// this is a directed query, send to all given instance ids
for _, instName := range mq.instanceIds {
if inst, ok := registry.GetInstance(instName); ok {
inst.Send("MSG_QUERY", body)
}
}
}
return nil
}