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blockservice.go
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blockservice.go
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package titan_client
import (
"context"
"fmt"
blocks "github.com/ipfs/go-block-format"
"github.com/ipfs/go-cid"
blockstore "github.com/ipfs/go-ipfs-blockstore"
exchange "github.com/ipfs/go-ipfs-exchange-interface"
ipld "github.com/ipfs/go-ipld-format"
"github.com/timtide/go-titan-client/util"
)
type blockService struct {
customGatewayAddr string
locatorAddr string
}
// newBlockService creates a BlockService with given datastore instance.
func newBlockService(customGatewayAddr, locatorAddr string) *blockService {
return &blockService{
customGatewayAddr: customGatewayAddr,
locatorAddr: locatorAddr,
}
}
// Blockstore returns the blockstore behind this blockservice.
func (s *blockService) Blockstore() blockstore.Blockstore {
logger.Error("not implemented")
return nil
}
// Exchange returns the exchange behind this blockservice.
func (s *blockService) Exchange() exchange.Interface {
logger.Error("not implemented")
return nil
}
// AddBlock adds a particular block to the service, Putting it into the datastore.
func (s *blockService) AddBlock(ctx context.Context, o blocks.Block) error {
return fmt.Errorf("%s", "not implemented")
}
func (s *blockService) AddBlocks(ctx context.Context, bs []blocks.Block) error {
return fmt.Errorf("%s", "not implemented")
}
// GetBlock retrieves a particular block from the service,
// Getting it from the datastore using the key (hash).
func (s *blockService) GetBlock(ctx context.Context, c cid.Cid) (blocks.Block, error) {
if !c.Defined() {
return nil, ipld.ErrNotFound{Cid: c}
}
data, err := util.NewDataService(util.WithLocatorAddressOption(s.locatorAddr)).GetDataFromTitanOrGatewayByCid(ctx, s.customGatewayAddr, c)
if err != nil {
return nil, err
}
logger.Debug("block data download success")
block, err := blocks.NewBlockWithCid(data, c)
if err != nil {
logger.Error("create block fail : ", err.Error())
return nil, err
}
return block, nil
}
// GetBlocks gets a list of blocks asynchronously and returns through
// the returned channel.
func (s *blockService) GetBlocks(ctx context.Context, ks []cid.Cid) <-chan blocks.Block {
return util.NewDataService(util.WithLocatorAddressOption(s.locatorAddr)).GetBlockFromTitanOrGatewayByCids(ctx, s.customGatewayAddr, ks)
}
// DeleteBlock deletes a block in the blockservice from the datastore
func (s *blockService) DeleteBlock(ctx context.Context, c cid.Cid) error {
return fmt.Errorf("%s", "not implemented")
}
func (s *blockService) Close() error {
return fmt.Errorf("%s", "not implemented")
}