NewNodeP2P creates a new p2p node, and returns a reference to it. If the p2p is disabled, it returns nil. If metrics are configured, a bandwidth monitor will be spawned in a goroutine.
(resourcesCtx context.Context, chainID *big.Int, lg log.Logger, setup SetupP2P, storageManager *ethstorage.StorageManager, db ethdb.Database, m metrics.Metricer, feed *event.Feed)
| 48 | // NewNodeP2P creates a new p2p node, and returns a reference to it. If the p2p is disabled, it returns nil. |
| 49 | // If metrics are configured, a bandwidth monitor will be spawned in a goroutine. |
| 50 | func NewNodeP2P(resourcesCtx context.Context, chainID *big.Int, lg log.Logger, setup SetupP2P, |
| 51 | storageManager *ethstorage.StorageManager, db ethdb.Database, m metrics.Metricer, feed *event.Feed) (*NodeP2P, error) { |
| 52 | if setup == nil { |
| 53 | return nil, errors.New("p2p node cannot be created without setup") |
| 54 | } |
| 55 | var n NodeP2P |
| 56 | if err := n.init(resourcesCtx, chainID, lg, setup, storageManager, db, m, feed); err != nil { |
| 57 | closeErr := n.Close() |
| 58 | if closeErr != nil { |
| 59 | lg.Error("Failed to close p2p after starting with err", "closeErr", closeErr, "err", err) |
| 60 | } |
| 61 | return nil, err |
| 62 | } |
| 63 | if n.host == nil { |
| 64 | return nil, nil |
| 65 | } |
| 66 | return &n, nil |
| 67 | } |
| 68 | |
| 69 | func (n *NodeP2P) init(resourcesCtx context.Context, chainID *big.Int, lg log.Logger, setup SetupP2P, |
| 70 | storageManager *ethstorage.StorageManager, db ethdb.Database, m metrics.Metricer, feed *event.Feed) error { |