gosora/common/counters/topics_views.go
Azareal 60964868d4 Moved the counters to their own package.
De-duped some of the logging code.
Added per-route state to the not found errors.
Exported debugDetail, debugDetailf, debugLog, and debugLogf.
Tweaked the padding on Tempra Simple.
Added panel submenus to Tempra Conflux.
Added Chart CSS to Tempra Conflux.
Fixed the padding and margins for the Control Panel in Cosora.
Made Cosora's Control Panel a little more tablet friendly.
Added the rowmsg CSS class to better style message rows.
Removed the repetitive guard code for the pre-render hooks.
Removed the repetitive guard code for the string-string hooks.
We now capture views for routes.StaticFile
Added the move action to the moderation logs.

Added the viewchunks_forums table.
Began work on Per-forum Views.
I probably missed a few things in this changelog.
2018-02-19 04:26:01 +00:00

117 lines
3.1 KiB
Go

package counters
import (
"database/sql"
"sync"
".."
"../../query_gen/lib"
)
var TopicViewCounter *DefaultTopicViewCounter
// TODO: Use two odd-even maps for now, and move to something more concurrent later, maybe a sharded map?
type DefaultTopicViewCounter struct {
oddTopics map[int]*RWMutexCounterBucket // map[tid]struct{counter,sync.RWMutex}
evenTopics map[int]*RWMutexCounterBucket
oddLock sync.RWMutex
evenLock sync.RWMutex
update *sql.Stmt
}
func NewDefaultTopicViewCounter() (*DefaultTopicViewCounter, error) {
acc := qgen.Builder.Accumulator()
counter := &DefaultTopicViewCounter{
oddTopics: make(map[int]*RWMutexCounterBucket),
evenTopics: make(map[int]*RWMutexCounterBucket),
update: acc.Update("topics").Set("views = views + ?").Where("tid = ?").Prepare(),
}
common.AddScheduledFifteenMinuteTask(counter.Tick) // Who knows how many topics we have queued up, we probably don't want this running too frequently
//common.AddScheduledSecondTask(counter.Tick)
common.AddShutdownTask(counter.Tick)
return counter, acc.FirstError()
}
func (counter *DefaultTopicViewCounter) Tick() error {
counter.oddLock.RLock()
oddTopics := counter.oddTopics
counter.oddLock.RUnlock()
for topicID, topic := range oddTopics {
var count int
topic.RLock()
count = topic.counter
topic.RUnlock()
// TODO: Only delete the bucket when it's zero to avoid hitting popular topics?
counter.oddLock.Lock()
delete(counter.oddTopics, topicID)
counter.oddLock.Unlock()
err := counter.insertChunk(count, topicID)
if err != nil {
return err
}
}
counter.evenLock.RLock()
evenTopics := counter.evenTopics
counter.evenLock.RUnlock()
for topicID, topic := range evenTopics {
var count int
topic.RLock()
count = topic.counter
topic.RUnlock()
// TODO: Only delete the bucket when it's zero to avoid hitting popular topics?
counter.evenLock.Lock()
delete(counter.evenTopics, topicID)
counter.evenLock.Unlock()
err := counter.insertChunk(count, topicID)
if err != nil {
return err
}
}
return nil
}
// TODO: Optimise this further. E.g. Using IN() on every one view topic. Rinse and repeat for two views, three views, four views and five views.
func (counter *DefaultTopicViewCounter) insertChunk(count int, topicID int) error {
if count == 0 {
return nil
}
common.DebugLogf("Inserting %d views into topic %d", count, topicID)
_, err := counter.update.Exec(count, topicID)
return err
}
func (counter *DefaultTopicViewCounter) Bump(topicID int) {
// Is the ID even?
if topicID%2 == 0 {
counter.evenLock.RLock()
topic, ok := counter.evenTopics[topicID]
counter.evenLock.RUnlock()
if ok {
topic.Lock()
topic.counter++
topic.Unlock()
} else {
counter.evenLock.Lock()
counter.evenTopics[topicID] = &RWMutexCounterBucket{counter: 1}
counter.evenLock.Unlock()
}
return
}
counter.oddLock.RLock()
topic, ok := counter.oddTopics[topicID]
counter.oddLock.RUnlock()
if ok {
topic.Lock()
topic.counter++
topic.Unlock()
} else {
counter.oddLock.Lock()
counter.oddTopics[topicID] = &RWMutexCounterBucket{counter: 1}
counter.oddLock.Unlock()
}
}