100 lines
2.2 KiB
Go
100 lines
2.2 KiB
Go
// Package local implements a ClusterDAGService that chunks and adds content
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// to a local peer, before pinning it.
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package local
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import (
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"context"
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"errors"
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adder "github.com/ipfs/ipfs-cluster/adder"
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"github.com/ipfs/ipfs-cluster/api"
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rpc "github.com/hsanjuan/go-libp2p-gorpc"
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cid "github.com/ipfs/go-cid"
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ipld "github.com/ipfs/go-ipld-format"
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logging "github.com/ipfs/go-log"
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peer "github.com/libp2p/go-libp2p-peer"
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)
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var errNotFound = errors.New("dagservice: block not found")
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var logger = logging.Logger("localdags")
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// DAGService is an implementation of an adder.ClusterDAGService which
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// puts the added blocks directly in the peers allocated to them (without
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// sharding).
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type DAGService struct {
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adder.BaseDAGService
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rpcClient *rpc.Client
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dests []peer.ID
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pinOpts api.PinOptions
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}
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// New returns a new Adder with the given rpc Client. The client is used
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// to perform calls to IPFSBlockPut and Pin content on Cluster.
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func New(rpc *rpc.Client, opts api.PinOptions) *DAGService {
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return &DAGService{
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rpcClient: rpc,
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dests: nil,
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pinOpts: opts,
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}
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}
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// Add puts the given node in the destination peers.
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func (dgs *DAGService) Add(ctx context.Context, node ipld.Node) error {
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if dgs.dests == nil {
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dests, err := adder.BlockAllocate(ctx, dgs.rpcClient, dgs.pinOpts)
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if err != nil {
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return err
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}
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dgs.dests = dests
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}
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size, err := node.Size()
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if err != nil {
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return err
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}
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nodeSerial := &api.NodeWithMeta{
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Cid: node.Cid().String(),
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Data: node.RawData(),
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CumSize: size,
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}
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return adder.PutBlock(ctx, dgs.rpcClient, nodeSerial, dgs.dests)
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}
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// Finalize pins the last Cid added to this DAGService.
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func (dgs *DAGService) Finalize(ctx context.Context, root *cid.Cid) (*cid.Cid, error) {
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// Cluster pin the result
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pinS := api.PinSerial{
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Cid: root.String(),
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Type: int(api.DataType),
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MaxDepth: -1,
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PinOptions: dgs.pinOpts,
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}
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dgs.dests = nil
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return root, dgs.rpcClient.CallContext(
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ctx,
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"",
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"Cluster",
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"Pin",
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pinS,
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&struct{}{},
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)
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}
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// AddMany calls Add for every given node.
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func (dgs *DAGService) AddMany(ctx context.Context, nodes []ipld.Node) error {
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for _, node := range nodes {
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err := dgs.Add(ctx, node)
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if err != nil {
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return err
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}
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}
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return nil
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}
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