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influxdb
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Don't ever try to query or write against a shard that is closed or deleted. 

Uses a RWlock so there's no global lock on writes or queries.
pull/866/head
Paul Dix 2014-08-22 13:41:34 -04:00
parent fb9d03e28d
commit 78509d918a
1 changed files with 21 additions and 0 deletions
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21
datastore/shard.go
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@ -7,6 +7,7 @@ import (
"fmt"
"math"
"regexp"
"sync"
"time"
"code.google.com/p/goprotobuf/proto"
@ -25,6 +26,7 @@ type Shard struct {
pointBatchSize int
writeBatchSize int
metaStore *metastore.Store
closeLock sync.RWMutex
}
func NewShard(db storage.Engine, pointBatchSize, writeBatchSize int, metaStore *metastore.Store) (*Shard, error) {
@ -37,6 +39,12 @@ func NewShard(db storage.Engine, pointBatchSize, writeBatchSize int, metaStore *
}
func (self *Shard) Write(database string, series []*protocol.Series) error {
self.closeLock.RLock()
defer self.closeLock.RUnlock()
if self.closed {
return fmt.Errorf("Shard is closed")
}
wb := make([]storage.Write, 0)
for _, s := range series {
@ -93,6 +101,12 @@ func (self *Shard) Write(database string, series []*protocol.Series) error {
}
func (self *Shard) Query(querySpec *parser.QuerySpec, processor cluster.QueryProcessor) error {
self.closeLock.RLock()
defer self.closeLock.RUnlock()
if self.closed {
return fmt.Errorf("Shard is closed")
}
if querySpec.IsListSeriesQuery() {
return fmt.Errorf("List series queries should never come to the shard")
} else if querySpec.IsDeleteFromSeriesQuery() {
@ -328,6 +342,11 @@ func (self *Shard) executeDeleteQuery(querySpec *parser.QuerySpec, processor clu
}
func (self *Shard) DropFields(fields []*metastore.Field) error {
self.closeLock.RLock()
defer self.closeLock.RUnlock()
if self.closed {
return fmt.Errorf("Shard is closed")
}
startTimeBytes := []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}
endTimeBytes := []byte{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}
return self.deleteRangeOfFields(fields, startTimeBytes, endTimeBytes)
@ -412,6 +431,8 @@ func (self *Shard) byteArrayForTime(t time.Time) []byte {
}
func (self *Shard) close() {
self.closeLock.Lock()
defer self.closeLock.Unlock()
self.closed = true
self.db.Close()
self.db = nil