mirror of
https://github.com/ipfs/kubo.git
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92d08db7a5
- updated go-ctxgroup and goprocess ctxgroup: AddChildGroup was changed to AddChild. Used in two files: - p2p/net/mock/mock_net.go - routing/dht/dht.go - updated context from hg repo to git prev. commit in hg was ad01a6fcc8a19d3a4478c836895ffe883bd2ceab. (context: make parentCancelCtx iterative) represents commit 84f8955a887232b6308d79c68b8db44f64df455c in git repo - updated context to master (b6fdb7d8a4ccefede406f8fe0f017fb58265054c) Aaron Jacobs (2): net/context: Don't accept a context in the DoSomethingSlow example. context: Be clear that users must cancel the result of WithCancel. Andrew Gerrand (1): go.net: use golang.org/x/... import paths Bryan C. Mills (1): net/context: Don't leak goroutines in Done example. Damien Neil (1): context: fix removal of cancelled timer contexts from parent David Symonds (2): context: Fix WithValue example code. net: add import comments. Sameer Ajmani (1): context: fix TestAllocs to account for ints in interfaces
63 lines
1.7 KiB
Go
63 lines
1.7 KiB
Go
package blockstore
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import (
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"github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/hashicorp/golang-lru"
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context "github.com/jbenet/go-ipfs/Godeps/_workspace/src/golang.org/x/net/context"
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"github.com/jbenet/go-ipfs/blocks"
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u "github.com/jbenet/go-ipfs/util"
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)
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// WriteCached returns a blockstore that caches up to |size| unique writes (bs.Put).
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func WriteCached(bs Blockstore, size int) (Blockstore, error) {
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c, err := lru.New(size)
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if err != nil {
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return nil, err
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}
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return &writecache{blockstore: bs, cache: c}, nil
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}
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type writecache struct {
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cache *lru.Cache // pointer b/c Cache contains a Mutex as value (complicates copying)
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blockstore Blockstore
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}
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func (w *writecache) DeleteBlock(k u.Key) error {
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w.cache.Remove(k)
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return w.blockstore.DeleteBlock(k)
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}
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func (w *writecache) Has(k u.Key) (bool, error) {
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if _, ok := w.cache.Get(k); ok {
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return true, nil
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}
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return w.blockstore.Has(k)
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}
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func (w *writecache) Get(k u.Key) (*blocks.Block, error) {
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return w.blockstore.Get(k)
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}
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func (w *writecache) Put(b *blocks.Block) error {
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if _, ok := w.cache.Get(b.Key()); ok {
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return nil
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}
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w.cache.Add(b.Key(), struct{}{})
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return w.blockstore.Put(b)
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}
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func (w *writecache) AllKeys(ctx context.Context) ([]u.Key, error) {
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return w.blockstore.AllKeysRange(ctx, 0, 0)
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}
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func (w *writecache) AllKeysChan(ctx context.Context) (<-chan u.Key, error) {
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return w.blockstore.AllKeysRangeChan(ctx, 0, 0)
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}
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func (w *writecache) AllKeysRange(ctx context.Context, offset int, limit int) ([]u.Key, error) {
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return w.blockstore.AllKeysRange(ctx, offset, limit)
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}
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func (w *writecache) AllKeysRangeChan(ctx context.Context, offset int, limit int) (<-chan u.Key, error) {
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return w.blockstore.AllKeysRangeChan(ctx, offset, limit)
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}
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