You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
123 lines
2.8 KiB
123 lines
2.8 KiB
package broker
|
|
|
|
import (
|
|
"fmt"
|
|
"sync"
|
|
"time"
|
|
|
|
"github.com/chrislusf/seaweedfs/weed/filer2"
|
|
"github.com/chrislusf/seaweedfs/weed/glog"
|
|
"github.com/chrislusf/seaweedfs/weed/pb/messaging_pb"
|
|
"github.com/chrislusf/seaweedfs/weed/util/log_buffer"
|
|
)
|
|
|
|
type TopicPartition struct {
|
|
Namespace string
|
|
Topic string
|
|
Partition int32
|
|
}
|
|
|
|
const (
|
|
TopicPartitionFmt = "%s/%s_%02d"
|
|
)
|
|
|
|
func (tp *TopicPartition) String() string {
|
|
return fmt.Sprintf(TopicPartitionFmt, tp.Namespace, tp.Topic, tp.Partition)
|
|
}
|
|
|
|
type TopicControl struct {
|
|
sync.Mutex
|
|
cond *sync.Cond
|
|
subscriberCount int
|
|
publisherCount int
|
|
logBuffer *log_buffer.LogBuffer
|
|
}
|
|
|
|
type TopicManager struct {
|
|
sync.Mutex
|
|
topicControls map[TopicPartition]*TopicControl
|
|
broker *MessageBroker
|
|
}
|
|
|
|
func NewTopicManager(messageBroker *MessageBroker) *TopicManager {
|
|
return &TopicManager{
|
|
topicControls: make(map[TopicPartition]*TopicControl),
|
|
broker: messageBroker,
|
|
}
|
|
}
|
|
|
|
func (tm *TopicManager) buildLogBuffer(tl *TopicControl, tp TopicPartition, topicConfig *messaging_pb.TopicConfiguration) *log_buffer.LogBuffer {
|
|
|
|
flushFn := func(startTime, stopTime time.Time, buf []byte) {
|
|
|
|
if topicConfig.IsTransient {
|
|
// return
|
|
}
|
|
|
|
// fmt.Printf("flushing with topic config %+v\n", topicConfig)
|
|
|
|
targetFile := fmt.Sprintf(
|
|
"%s/%s/%s/%04d-%02d-%02d/%02d-%02d.part%02d",
|
|
filer2.TopicsDir, tp.Namespace, tp.Topic,
|
|
startTime.Year(), startTime.Month(), startTime.Day(), startTime.Hour(), startTime.Minute(),
|
|
tp.Partition,
|
|
)
|
|
|
|
if err := tm.broker.appendToFile(targetFile, topicConfig, buf); err != nil {
|
|
glog.V(0).Infof("log write failed %s: %v", targetFile, err)
|
|
}
|
|
}
|
|
logBuffer := log_buffer.NewLogBuffer(time.Minute, flushFn, func() {
|
|
tl.cond.Broadcast()
|
|
})
|
|
|
|
return logBuffer
|
|
}
|
|
|
|
func (tm *TopicManager) RequestLock(partition TopicPartition, topicConfig *messaging_pb.TopicConfiguration, isPublisher bool) *TopicControl {
|
|
tm.Lock()
|
|
defer tm.Unlock()
|
|
|
|
tc, found := tm.topicControls[partition]
|
|
if !found {
|
|
tc = &TopicControl{}
|
|
tc.cond = sync.NewCond(&tc.Mutex)
|
|
tm.topicControls[partition] = tc
|
|
tc.logBuffer = tm.buildLogBuffer(tc, partition, topicConfig)
|
|
}
|
|
if isPublisher {
|
|
tc.publisherCount++
|
|
} else {
|
|
tc.subscriberCount++
|
|
}
|
|
return tc
|
|
}
|
|
|
|
func (tm *TopicManager) ReleaseLock(partition TopicPartition, isPublisher bool) {
|
|
tm.Lock()
|
|
defer tm.Unlock()
|
|
|
|
lock, found := tm.topicControls[partition]
|
|
if !found {
|
|
return
|
|
}
|
|
if isPublisher {
|
|
lock.publisherCount--
|
|
} else {
|
|
lock.subscriberCount--
|
|
}
|
|
if lock.subscriberCount <= 0 && lock.publisherCount <= 0 {
|
|
delete(tm.topicControls, partition)
|
|
lock.logBuffer.Shutdown()
|
|
}
|
|
}
|
|
|
|
func (tm *TopicManager) ListTopicPartitions() (tps []TopicPartition) {
|
|
tm.Lock()
|
|
defer tm.Unlock()
|
|
|
|
for k := range tm.topicControls {
|
|
tps = append(tps, k)
|
|
}
|
|
return
|
|
}
|