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Merge pull request #471 from fkautz/pr_out_memory_driver_now_limits_by_size

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This commit is contained in:
Frederick F. Kautz IV 2015-04-22 18:26:28 -07:00
commit 28785421cd
2 changed files with 35 additions and 14 deletions
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2
pkg/server/server.go
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@ -134,7 +134,7 @@ func getDriverChannels(driverType DriverType) (ctrlChans []chan<- string, status
switch {
case driverType == Memory:
{
ctrlChan, statusChan, driver = memory.Start(1000)
ctrlChan, statusChan, driver = memory.Start(1024 * 1024 * 1024)
ctrlChans = append(ctrlChans, ctrlChan)
statusChans = append(statusChans, statusChan)
}

47
pkg/storage/drivers/memory/memory.go
View File

@ -33,6 +33,7 @@ import (
"io/ioutil"
"github.com/golang/groupcache/lru"
"github.com/minio-io/minio/pkg/utils/log"
)
// memoryDriver - local variables
@ -41,6 +42,8 @@ type memoryDriver struct {
objectMetadata map[string]storedObject
objects *lru.Cache
lock *sync.RWMutex
totalSize int64
maxSize int64
}
type storedBucket struct {
@ -54,16 +57,26 @@ type storedObject struct {
}
// Start memory object server
func Start(maxObjects int) (chan<- string, <-chan error, drivers.Driver) {
func Start(maxSize int64) (chan<- string, <-chan error, drivers.Driver) {
ctrlChannel := make(chan string)
errorChannel := make(chan error)
memory := new(memoryDriver)
var memory *memoryDriver
memory = new(memoryDriver)
memory.bucketMetadata = make(map[string]storedBucket)
memory.objectMetadata = make(map[string]storedObject)
memory.objects = lru.New(maxObjects)
memory.objects = lru.New(0)
memory.lock = new(sync.RWMutex)
switch {
case maxSize == 0:
memory.maxSize = 9223372036854775807
case maxSize > 0:
memory.maxSize = maxSize
default:
log.Println("Error")
}
memory.objects.OnEvicted = memory.evictObject
go start(ctrlChannel, errorChannel)
@ -75,7 +88,7 @@ func start(ctrlChannel <-chan string, errorChannel chan<- error) {
}
// GetObject - GET object from memory buffer
func (memory memoryDriver) GetObject(w io.Writer, bucket string, object string) (int64, error) {
func (memory *memoryDriver) GetObject(w io.Writer, bucket string, object string) (int64, error) {
memory.lock.RLock()
defer memory.lock.RUnlock()
if _, ok := memory.bucketMetadata[bucket]; ok == false {
@ -95,7 +108,7 @@ func (memory memoryDriver) GetObject(w io.Writer, bucket string, object string)
}
// GetPartialObject - GET object from memory buffer range
func (memory memoryDriver) GetPartialObject(w io.Writer, bucket, object string, start, length int64) (int64, error) {
func (memory *memoryDriver) GetPartialObject(w io.Writer, bucket, object string, start, length int64) (int64, error) {
memory.lock.RLock()
defer memory.lock.RUnlock()
var sourceBuffer bytes.Buffer
@ -109,7 +122,7 @@ func (memory memoryDriver) GetPartialObject(w io.Writer, bucket, object string,
}
// GetBucketMetadata -
func (memory memoryDriver) GetBucketMetadata(bucket string) (drivers.BucketMetadata, error) {
func (memory *memoryDriver) GetBucketMetadata(bucket string) (drivers.BucketMetadata, error) {
memory.lock.RLock()
defer memory.lock.RUnlock()
if _, ok := memory.bucketMetadata[bucket]; ok == false {
@ -119,7 +132,7 @@ func (memory memoryDriver) GetBucketMetadata(bucket string) (drivers.BucketMetad
}
// CreateObject - PUT object to memory buffer
func (memory memoryDriver) CreateObject(bucket, key, contentType, md5sum string, data io.Reader) error {
func (memory *memoryDriver) CreateObject(bucket, key, contentType, md5sum string, data io.Reader) error {
memory.lock.RLock()
if _, ok := memory.bucketMetadata[bucket]; ok == false {
@ -166,12 +179,16 @@ func (memory memoryDriver) CreateObject(bucket, key, contentType, md5sum string,
}
memory.objectMetadata[objectKey] = newObject
memory.objects.Add(objectKey, dataSlice)
memory.totalSize = memory.totalSize + newObject.metadata.Size
for memory.totalSize > memory.maxSize {
memory.objects.RemoveOldest()
}
memory.lock.Unlock()
return nil
}
// CreateBucket - create bucket in memory
func (memory memoryDriver) CreateBucket(bucketName string) error {
func (memory *memoryDriver) CreateBucket(bucketName string) error {
memory.lock.RLock()
if !drivers.IsValidBucket(bucketName) {
memory.lock.RUnlock()
@ -213,7 +230,7 @@ func appendUniq(slice []string, i string) []string {
return append(slice, i)
}
func (memory memoryDriver) filterDelimiterPrefix(keys []string, key, delimitedName string, resources drivers.BucketResourcesMetadata) (drivers.BucketResourcesMetadata, []string) {
func (memory *memoryDriver) filterDelimiterPrefix(keys []string, key, delimitedName string, resources drivers.BucketResourcesMetadata) (drivers.BucketResourcesMetadata, []string) {
switch true {
case key == resources.Prefix:
keys = appendUniq(keys, key)
@ -227,7 +244,7 @@ func (memory memoryDriver) filterDelimiterPrefix(keys []string, key, delimitedNa
}
// ListObjects - list objects from memory
func (memory memoryDriver) ListObjects(bucket string, resources drivers.BucketResourcesMetadata) ([]drivers.ObjectMetadata, drivers.BucketResourcesMetadata, error) {
func (memory *memoryDriver) ListObjects(bucket string, resources drivers.BucketResourcesMetadata) ([]drivers.ObjectMetadata, drivers.BucketResourcesMetadata, error) {
memory.lock.RLock()
defer memory.lock.RUnlock()
if _, ok := memory.bucketMetadata[bucket]; ok == false {
@ -290,7 +307,7 @@ func (b ByBucketName) Swap(i, j int) { b[i], b[j] = b[j], b[i] }
func (b ByBucketName) Less(i, j int) bool { return b[i].Name < b[j].Name }
// ListBuckets - List buckets from memory
func (memory memoryDriver) ListBuckets() ([]drivers.BucketMetadata, error) {
func (memory *memoryDriver) ListBuckets() ([]drivers.BucketMetadata, error) {
memory.lock.RLock()
defer memory.lock.RUnlock()
var results []drivers.BucketMetadata
@ -302,7 +319,7 @@ func (memory memoryDriver) ListBuckets() ([]drivers.BucketMetadata, error) {
}
// GetObjectMetadata - get object metadata from memory
func (memory memoryDriver) GetObjectMetadata(bucket, key, prefix string) (drivers.ObjectMetadata, error) {
func (memory *memoryDriver) GetObjectMetadata(bucket, key, prefix string) (drivers.ObjectMetadata, error) {
memory.lock.RLock()
defer memory.lock.RUnlock()
// check if bucket exists
@ -318,8 +335,12 @@ func (memory memoryDriver) GetObjectMetadata(bucket, key, prefix string) (driver
return drivers.ObjectMetadata{}, drivers.ObjectNotFound{Bucket: bucket, Object: key}
}
func (memory memoryDriver) evictObject(key lru.Key, value interface{}) {
func (memory *memoryDriver) evictObject(key lru.Key, value interface{}) {
k := key.(string)
memory.totalSize = memory.totalSize - memory.objectMetadata[k].metadata.Size
log.Println("evicting:", k)
delete(memory.objectMetadata, k)
}