func NewManager(sources []source_api.Source, sinkManager sinks.ExternalSinkManager, res, bufferDuration time.Duration, c cache.Cache, useModel bool, modelRes time.Duration) (Manager, error) {
var newModel model.Model = nil
if useModel {
newModel = model.NewModel(modelRes)
// Temporary semi-hack to get model storage garbage-collected.
c.AddCacheListener(newModel.GetCacheListener())
}
return &realManager{
sources: sources,
sinkManager: sinkManager,
cache: c,
model: newModel,
lastSync: time.Now(),
resolution: res,
decoder: sink_api.NewDecoder(),
sinkStopChan: sinkManager.Sync(),
}, nil
}
// Update populates the data structure from a cache.
func (rc *realCluster) Update(c cache.Cache) error {
var zero time.Time
latest_time := rc.timestamp
glog.V(2).Infoln("Schema Update operation started")
// Invoke cache methods using the Cluster timestamp
// Iterate through the results in time-ascending order to maintain the context for cumulative metrics
nodes := c.GetNodes(rc.timestamp, zero)
for i := len(nodes) - 1; i >= 0; i-- {
timestamp, err := rc.updateNode(nodes[i])
if err != nil {
return fmt.Errorf("Failed to Update Node Information: %s", err)
}
latest_time = latestTimestamp(latest_time, timestamp)
}
pods := c.GetPods(rc.timestamp, zero)
for i := len(pods) - 1; i >= 0; i-- {
timestamp, err := rc.updatePod(pods[i])
if err != nil {
return fmt.Errorf("Failed to Update Pod Information: %s", err)
}
latest_time = latestTimestamp(latest_time, timestamp)
}
freeConts := c.GetFreeContainers(rc.timestamp, zero)
for i := len(freeConts) - 1; i >= 0; i-- {
timestamp, err := rc.updateFreeContainer(freeConts[i])
if err != nil {
return fmt.Errorf("Failed to Update Free Container Information: %s", err)
}
latest_time = latestTimestamp(latest_time, timestamp)
}
// Perform metrics aggregation
rc.aggregationStep()
// Update the Cluster timestamp to the latest time found in the new metrics
rc.updateTime(latest_time)
glog.V(2).Infoln("Schema Update operation completed")
return nil
}
// Update populates the data structure from a cache.
func (rc *realModel) Update(c cache.Cache) error {
var zero time.Time
latest_time := rc.timestamp
glog.V(2).Infoln("Model Update operation started")
// Invoke cache methods using the Model timestamp
nodes := c.GetNodes(rc.timestamp, zero)
for _, node := range nodes {
timestamp, err := rc.updateNode(node)
if err != nil {
return fmt.Errorf("Failed to Update Node Information: %s", err)
}
latest_time = latestTimestamp(latest_time, timestamp)
}
pods := c.GetPods(rc.timestamp, zero)
for i := len(pods) - 1; i >= 0; i-- {
timestamp, err := rc.updatePod(pods[i])
if err != nil {
return fmt.Errorf("Failed to Update Pod Information: %s", err)
}
latest_time = latestTimestamp(latest_time, timestamp)
}
freeConts := c.GetFreeContainers(rc.timestamp, zero)
for i := len(freeConts) - 1; i >= 0; i-- {
timestamp, err := rc.updateFreeContainer(freeConts[i])
if err != nil {
return fmt.Errorf("Failed to Update Free Container Information: %s", err)
}
latest_time = latestTimestamp(latest_time, timestamp)
}
// Perform metrics aggregation
rc.aggregationStep(latest_time)
// Update the Model timestamp to the latest time found in the new metrics
rc.updateTime(latest_time)
glog.V(2).Infoln("Schema Update operation completed")
return nil
}