mirror of
https://github.com/ipfs/kubo.git
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76e1da02a8
Note: This commit is technically broken. However, I need to make a bunch of cmds changes to make this work and I'd rather not bundle both changes into a single commit. License: MIT Signed-off-by: Steven Allen <steven@stebalien.com>
57 lines
1.4 KiB
Go
57 lines
1.4 KiB
Go
// package importer implements utilities used to create IPFS DAGs from files
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// and readers
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package importer
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import (
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"fmt"
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"os"
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bal "github.com/ipfs/go-ipfs/importer/balanced"
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"github.com/ipfs/go-ipfs/importer/chunk"
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h "github.com/ipfs/go-ipfs/importer/helpers"
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trickle "github.com/ipfs/go-ipfs/importer/trickle"
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dag "github.com/ipfs/go-ipfs/merkledag"
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"gx/ipfs/QmUyfy4QSr3NXym4etEiRyxBLqqAeKHJuRdi8AACxg63fZ/go-ipfs-cmdkit/files"
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node "gx/ipfs/QmPN7cwmpcc4DWXb4KTB9dNAJgjuPY69h3npsMfhRrQL9c/go-ipld-format"
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)
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// Builds a DAG from the given file, writing created blocks to disk as they are
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// created
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func BuildDagFromFile(fpath string, ds dag.DAGService) (node.Node, error) {
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stat, err := os.Lstat(fpath)
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if err != nil {
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return nil, err
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}
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if stat.IsDir() {
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return nil, fmt.Errorf("`%s` is a directory", fpath)
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}
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f, err := files.NewSerialFile(fpath, fpath, false, stat)
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if err != nil {
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return nil, err
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}
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defer f.Close()
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return BuildDagFromReader(ds, chunk.NewSizeSplitter(f, chunk.DefaultBlockSize))
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}
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func BuildDagFromReader(ds dag.DAGService, spl chunk.Splitter) (node.Node, error) {
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dbp := h.DagBuilderParams{
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Dagserv: ds,
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Maxlinks: h.DefaultLinksPerBlock,
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}
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return bal.BalancedLayout(dbp.New(spl))
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}
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func BuildTrickleDagFromReader(ds dag.DAGService, spl chunk.Splitter) (node.Node, error) {
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dbp := h.DagBuilderParams{
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Dagserv: ds,
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Maxlinks: h.DefaultLinksPerBlock,
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}
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return trickle.TrickleLayout(dbp.New(spl))
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}
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