62 lines
1.8 KiB
Go
62 lines
1.8 KiB
Go
// Copyright 2020 Coinbase, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package indexer
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import (
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"context"
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"github.com/coinbase/rosetta-sdk-go/asserter"
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"github.com/coinbase/rosetta-sdk-go/parser"
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"github.com/coinbase/rosetta-sdk-go/storage"
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"github.com/coinbase/rosetta-sdk-go/types"
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)
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var _ storage.BalanceStorageHelper = (*BalanceStorageHelper)(nil)
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// BalanceStorageHelper implements storage.BalanceStorageHelper.
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type BalanceStorageHelper struct {
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a *asserter.Asserter
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}
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// AccountBalance attempts to fetch the balance
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// for a missing account in storage.
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func (h *BalanceStorageHelper) AccountBalance(
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ctx context.Context,
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account *types.AccountIdentifier,
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currency *types.Currency,
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block *types.BlockIdentifier,
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) (*types.Amount, error) {
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return &types.Amount{
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Value: "0",
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Currency: currency,
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}, nil
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}
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// Asserter returns a *asserter.Asserter.
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func (h *BalanceStorageHelper) Asserter() *asserter.Asserter {
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return h.a
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}
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// BalanceExemptions returns a list of *types.BalanceExemption.
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func (h *BalanceStorageHelper) BalanceExemptions() []*types.BalanceExemption {
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return []*types.BalanceExemption{}
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}
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// ExemptFunc returns a parser.ExemptOperation.
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func (h *BalanceStorageHelper) ExemptFunc() parser.ExemptOperation {
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return func(op *types.Operation) bool {
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return false
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}
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}
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