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70 lines
2 KiB
Go
70 lines
2 KiB
Go
// Copyright 2018 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package swap
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import (
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"context"
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"errors"
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"github.com/ethereum/go-ethereum/p2p/enode"
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)
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var (
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ErrNoSuchPeerAccounting = errors.New("No accounting with that peer")
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)
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//This is the API definition to access swarm swap accounting data via RPC
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type API struct {
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swap *Swap
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}
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//TODO: define metrics
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//Get metrics about swap for this node
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type SwapMetrics struct {
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}
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//Create a new API instance
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func NewAPI(swap *Swap) *API {
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return &API{swap: swap}
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}
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//Get the balance for this node with a specific peer
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func (swapapi *API) BalanceWithPeer(ctx context.Context, peer enode.ID) (balance int64, err error) {
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var ok bool
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balance, ok = swapapi.swap.balances[peer]
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if !ok {
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err = ErrNoSuchPeerAccounting
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}
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return
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}
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//Get the overall balance of the node
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//Iterates over all peers this node is having accounted interaction
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//and just adds up balances.
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//It assumes that if a disfavorable balance is represented as a negative value
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func (swapapi *API) Balance(ctx context.Context) (balance int64, err error) {
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balance = 0
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for _, peerBalance := range swapapi.swap.balances {
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balance += peerBalance
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}
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return
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}
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//Just return the Swap metrics
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func (swapapi *API) GetSwapMetrics() (*SwapMetrics, error) {
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return nil, nil
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}
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