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view_balance.go
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view_balance.go
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// Copyright 2020 Coinbase, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package cmd
import (
"encoding/json"
"fmt"
"log"
"strconv"
"time"
"github.com/coinbase/rosetta-sdk-go/asserter"
"github.com/coinbase/rosetta-sdk-go/fetcher"
"github.com/coinbase/rosetta-sdk-go/types"
"github.com/coinbase/rosetta-sdk-go/utils"
"github.com/spf13/cobra"
)
var (
viewAccountCmd = &cobra.Command{
Use: "view:balance",
Short: "View an account balance",
Long: `While debugging, it is often useful to inspect the state
of an account at a certain block. This command allows you to look up
any account by providing a JSON representation of a types.AccountIdentifier
(and optionally a height to perform the query).
For example, you could run view:balance '{"address":"interesting address"}' 1000
to lookup the balance of an interesting address at block 1000. Allowing the
address to specified as JSON allows for querying by SubAccountIdentifier.`,
RunE: runViewBalanceCmd,
Args: cobra.MinimumNArgs(1),
}
)
func runViewBalanceCmd(cmd *cobra.Command, args []string) error {
account := &types.AccountIdentifier{}
if err := json.Unmarshal([]byte(args[0]), account); err != nil {
return fmt.Errorf("%w: unable to unmarshal account %s", err, args[0])
}
if err := asserter.AccountIdentifier(account); err != nil {
return fmt.Errorf("%w: invalid account identifier %s", err, types.PrintStruct(account))
}
// Create a new fetcher
newFetcher := fetcher.New(
Config.OnlineURL,
fetcher.WithRetryElapsedTime(time.Duration(Config.RetryElapsedTime)*time.Second),
fetcher.WithTimeout(time.Duration(Config.HTTPTimeout)*time.Second),
fetcher.WithMaxRetries(Config.MaxRetries),
)
// Initialize the fetcher's asserter
_, _, fetchErr := newFetcher.InitializeAsserter(Context, Config.Network)
if fetchErr != nil {
return fmt.Errorf("%w: unable to initialize asserter", fetchErr.Err)
}
_, err := utils.CheckNetworkSupported(Context, Config.Network, newFetcher)
if err != nil {
return fmt.Errorf("%w: unable to confirm network is supported", err)
}
var lookupBlock *types.PartialBlockIdentifier
if len(args) > 1 {
index, err := strconv.ParseInt(args[1], 10, 64)
if err != nil {
return fmt.Errorf("%w: unable to parse index %s", err, args[0])
}
lookupBlock = &types.PartialBlockIdentifier{Index: &index}
}
block, amounts, metadata, fetchErr := newFetcher.AccountBalanceRetry(
Context,
Config.Network,
account,
lookupBlock,
nil,
)
if fetchErr != nil {
return fmt.Errorf("%w: unable to fetch account %+v", fetchErr.Err, account)
}
log.Printf("Amounts: %s\n", types.PrettyPrintStruct(amounts))
log.Printf("Metadata: %s\n", types.PrettyPrintStruct(metadata))
log.Printf("Balance Fetched At: %s\n", types.PrettyPrintStruct(block))
return nil
}