75 lines
1.5 KiB
Go
75 lines
1.5 KiB
Go
package market
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import (
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"bytes"
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"context"
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"github.com/ipfs/go-datastore"
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"github.com/ipfs/go-datastore/namespace"
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dsq "github.com/ipfs/go-datastore/query"
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"github.com/filecoin-project/go-address"
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cborrpc "github.com/filecoin-project/go-cbor-util"
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"github.com/filecoin-project/lotus/node/modules/dtypes"
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)
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const dsKeyAddr = "Addr"
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type Store struct {
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ds datastore.Batching
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}
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func newStore(ds dtypes.MetadataDS) *Store {
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ds = namespace.Wrap(ds, datastore.NewKey("/fundmgr/"))
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return &Store{
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ds: ds,
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}
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}
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// save the state to the datastore
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func (ps *Store) save(ctx context.Context, state *FundedAddressState) error {
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k := dskeyForAddr(state.Addr)
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b, err := cborrpc.Dump(state)
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if err != nil {
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return err
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}
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return ps.ds.Put(ctx, k, b)
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}
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// forEach calls iter with each address in the datastore
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func (ps *Store) forEach(ctx context.Context, iter func(*FundedAddressState)) error {
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res, err := ps.ds.Query(ctx, dsq.Query{Prefix: dsKeyAddr})
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if err != nil {
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return err
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}
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defer res.Close() //nolint:errcheck
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for {
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res, ok := res.NextSync()
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if !ok {
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break
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}
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if res.Error != nil {
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return err
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}
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var stored FundedAddressState
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if err := stored.UnmarshalCBOR(bytes.NewReader(res.Value)); err != nil {
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return err
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}
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iter(&stored)
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}
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return nil
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}
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// The datastore key used to identify the address state
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func dskeyForAddr(addr address.Address) datastore.Key {
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return datastore.KeyWithNamespaces([]string{dsKeyAddr, addr.String()})
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}
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