21 lines
518 B
Go
21 lines
518 B
Go
package merkledag
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import (
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"fmt"
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ipld "github.com/ipfs/go-ipld-format"
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)
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// ErrReadOnly is used when a read-only datastructure is written to.
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var ErrReadOnly = fmt.Errorf("cannot write to readonly DAGService")
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// NewReadOnlyDagService takes a NodeGetter, and returns a full DAGService
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// implementation that returns ErrReadOnly when its 'write' methods are
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// invoked.
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func NewReadOnlyDagService(ng ipld.NodeGetter) ipld.DAGService {
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return &ComboService{
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Read: ng,
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Write: &ErrorService{ErrReadOnly},
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}
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}
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