Golang chunk.Chan函数代码示例

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本文整理汇总了Golang中github.com/ipfs/go-ipfs/importer/chunk.Chan函数的典型用法代码示例。如果您正苦于以下问题：Golang Chan函数的具体用法？Golang Chan怎么用？Golang Chan使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。

在下文中一共展示了Chan函数的8个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的Golang代码示例。

示例1: TestAppendSingleBytesToEmpty

func TestAppendSingleBytesToEmpty(t *testing.T) {
	ds := mdtest.Mock()

	data := []byte("AB")

	nd := new(merkledag.Node)
	nd.Data = ft.FilePBData(nil, 0)

	dbp := &h.DagBuilderParams{
		Dagserv:  ds,
		Maxlinks: 4,
	}

	spl := chunk.SizeSplitterGen(500)

	blks, errs := chunk.Chan(spl(bytes.NewReader(data[:1])))

	ctx := context.Background()
	nnode, err := TrickleAppend(ctx, nd, dbp.New(blks, errs))
	if err != nil {
		t.Fatal(err)
	}

	blks, errs = chunk.Chan(spl(bytes.NewReader(data[1:])))

	nnode, err = TrickleAppend(ctx, nnode, dbp.New(blks, errs))
	if err != nil {
		t.Fatal(err)
	}

	fread, err := uio.NewDagReader(ctx, nnode, ds)
	if err != nil {
		t.Fatal(err)
	}

	out, err := ioutil.ReadAll(fread)
	if err != nil {
		t.Fatal(err)
	}

	fmt.Println(out, data)
	err = arrComp(out, data)
	if err != nil {
		t.Fatal(err)
	}
}

开发者ID:andradeandrey，项目名称:go-ipfs，代码行数:46，代码来源:trickle_test.go

示例2: buildTestDag

func buildTestDag(ds dag.DAGService, spl chunk.Splitter) (*dag.Node, error) {
	// Start the splitter
	blkch, errs := chunk.Chan(spl)

	dbp := h.DagBuilderParams{
		Dagserv:  ds,
		Maxlinks: h.DefaultLinksPerBlock,
	}

	return BalancedLayout(dbp.New(blkch, errs))
}

开发者ID:andradeandrey，项目名称:go-ipfs，代码行数:11，代码来源:balanced_test.go

示例3: BuildTrickleDagFromReader

func BuildTrickleDagFromReader(ds dag.DAGService, spl chunk.Splitter, ncb h.NodeCB) (*dag.Node, error) {
	// Start the splitter
	blkch, errch := chunk.Chan(spl)

	dbp := h.DagBuilderParams{
		Dagserv:  ds,
		Maxlinks: h.DefaultLinksPerBlock,
		NodeCB:   ncb,
	}

	return trickle.TrickleLayout(dbp.New(blkch, errch))
}

开发者ID:JeffreyRodriguez，项目名称:go-ipfs，代码行数:12，代码来源:importer.go

示例4: TestMultipleAppends

// This test appends one byte at a time to an empty file
func TestMultipleAppends(t *testing.T) {
	ds := mdtest.Mock()

	// TODO: fix small size appends and make this number bigger
	nbytes := int64(1000)
	should := make([]byte, nbytes)
	u.NewTimeSeededRand().Read(should)

	read := bytes.NewReader(nil)
	nd, err := buildTestDag(ds, chunk.NewSizeSplitter(read, 500))
	if err != nil {
		t.Fatal(err)
	}

	dbp := &h.DagBuilderParams{
		Dagserv:  ds,
		Maxlinks: 4,
	}

	spl := chunk.SizeSplitterGen(500)

	ctx := context.Background()
	for i := 0; i < len(should); i++ {
		blks, errs := chunk.Chan(spl(bytes.NewReader(should[i : i+1])))

		nnode, err := TrickleAppend(ctx, nd, dbp.New(blks, errs))
		if err != nil {
			t.Fatal(err)
		}

		err = VerifyTrickleDagStructure(nnode, ds, dbp.Maxlinks, layerRepeat)
		if err != nil {
			t.Fatal(err)
		}

		fread, err := uio.NewDagReader(ctx, nnode, ds)
		if err != nil {
			t.Fatal(err)
		}

		out, err := ioutil.ReadAll(fread)
		if err != nil {
			t.Fatal(err)
		}

		err = arrComp(out, should[:i+1])
		if err != nil {
			t.Fatal(err)
		}
	}
}

开发者ID:andradeandrey，项目名称:go-ipfs，代码行数:52，代码来源:trickle_test.go

示例5: expandSparse

// expandSparse grows the file with zero blocks of 4096
// A small blocksize is chosen to aid in deduplication
func (dm *DagModifier) expandSparse(size int64) error {
	r := io.LimitReader(zeroReader{}, size)
	spl := chunk.NewSizeSplitter(r, 4096)
	blks, errs := chunk.Chan(spl)
	nnode, err := dm.appendData(dm.curNode, blks, errs)
	if err != nil {
		return err
	}
	_, err = dm.dagserv.Add(nnode)
	if err != nil {
		return err
	}
	dm.curNode = nnode
	return nil
}

开发者ID:JeffreyRodriguez，项目名称:go-ipfs，代码行数:17，代码来源:dagmodifier.go

示例6: buildTestDag

func buildTestDag(ds merkledag.DAGService, spl chunk.Splitter) (*merkledag.Node, error) {
	// Start the splitter
	blkch, errs := chunk.Chan(spl)

	dbp := h.DagBuilderParams{
		Dagserv:  ds,
		Maxlinks: h.DefaultLinksPerBlock,
	}

	nd, err := TrickleLayout(dbp.New(blkch, errs))
	if err != nil {
		return nil, err
	}

	return nd, VerifyTrickleDagStructure(nd, ds, dbp.Maxlinks, layerRepeat)
}

开发者ID:andradeandrey，项目名称:go-ipfs，代码行数:16，代码来源:trickle_test.go

示例7: TestAppend

func TestAppend(t *testing.T) {
	nbytes := int64(128 * 1024)
	should := make([]byte, nbytes)
	u.NewTimeSeededRand().Read(should)

	// Reader for half the bytes
	read := bytes.NewReader(should[:nbytes/2])
	ds := mdtest.Mock()
	nd, err := buildTestDag(ds, chunk.NewSizeSplitter(read, 500))
	if err != nil {
		t.Fatal(err)
	}

	dbp := &h.DagBuilderParams{
		Dagserv:  ds,
		Maxlinks: h.DefaultLinksPerBlock,
	}

	r := bytes.NewReader(should[nbytes/2:])
	blks, errs := chunk.Chan(chunk.NewSizeSplitter(r, 500))

	ctx := context.Background()
	nnode, err := TrickleAppend(ctx, nd, dbp.New(blks, errs))
	if err != nil {
		t.Fatal(err)
	}

	err = VerifyTrickleDagStructure(nnode, ds, dbp.Maxlinks, layerRepeat)
	if err != nil {
		t.Fatal(err)
	}

	fread, err := uio.NewDagReader(ctx, nnode, ds)
	if err != nil {
		t.Fatal(err)
	}

	out, err := ioutil.ReadAll(fread)
	if err != nil {
		t.Fatal(err)
	}

	err = arrComp(out, should)
	if err != nil {
		t.Fatal(err)
	}
}

开发者ID:andradeandrey，项目名称:go-ipfs，代码行数:47，代码来源:trickle_test.go

示例8: Sync

// Sync writes changes to this dag to disk
func (dm *DagModifier) Sync() error {
	// No buffer? Nothing to do
	if dm.wrBuf == nil {
		return nil
	}

	// If we have an active reader, kill it
	if dm.read != nil {
		dm.read = nil
		dm.readCancel()
	}

	// Number of bytes we're going to write
	buflen := dm.wrBuf.Len()

	// Grab key for unpinning after mod operation
	curk, err := dm.curNode.Key()
	if err != nil {
		return err
	}

	// overwrite existing dag nodes
	thisk, done, err := dm.modifyDag(dm.curNode, dm.writeStart, dm.wrBuf)
	if err != nil {
		return err
	}

	nd, err := dm.dagserv.Get(dm.ctx, thisk)
	if err != nil {
		return err
	}

	dm.curNode = nd

	// need to write past end of current dag
	if !done {
		blks, errs := chunk.Chan(dm.splitter(dm.wrBuf))
		nd, err = dm.appendData(dm.curNode, blks, errs)
		if err != nil {
			return err
		}

		thisk, err = dm.dagserv.Add(nd)
		if err != nil {
			return err
		}

		dm.curNode = nd
	}

	// Finalize correct pinning, and flush pinner
	dm.mp.PinWithMode(thisk, pin.Recursive)
	dm.mp.RemovePinWithMode(curk, pin.Recursive)
	err = dm.mp.Flush()
	if err != nil {
		return err
	}

	dm.writeStart += uint64(buflen)

	dm.wrBuf = nil
	return nil
}

开发者ID:JeffreyRodriguez，项目名称:go-ipfs，代码行数:64，代码来源:dagmodifier.go

注：本文中的github.com/ipfs/go-ipfs/importer/chunk.Chan函数示例整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。