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account_retriever.go
80 lines (64 loc) · 2.53 KB
/
account_retriever.go
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package types
import (
"context"
"fmt"
"strconv"
grpc "google.golang.org/grpc"
"google.golang.org/grpc/metadata"
"github.com/blockgenx/blockgen-sdk/client"
sdk "github.com/blockgenx/blockgen-sdk/types"
grpctypes "github.com/blockgenx/blockgen-sdk/types/grpc"
)
var (
_ client.Account = AccountI(nil)
_ client.AccountRetriever = AccountRetriever{}
)
// AccountRetriever defines the properties of a type that can be used to
// retrieve accounts.
type AccountRetriever struct{}
// GetAccount queries for an account given an address and a block height. An
// error is returned if the query or decoding fails.
func (ar AccountRetriever) GetAccount(clientCtx client.Context, addr sdk.AccAddress) (client.Account, error) {
account, _, err := ar.GetAccountWithHeight(clientCtx, addr)
return account, err
}
// GetAccountWithHeight queries for an account given an address. Returns the
// height of the query with the account. An error is returned if the query
// or decoding fails.
func (ar AccountRetriever) GetAccountWithHeight(clientCtx client.Context, addr sdk.AccAddress) (client.Account, int64, error) {
var header metadata.MD
queryClient := NewQueryClient(clientCtx)
res, err := queryClient.Account(context.Background(), &QueryAccountRequest{Address: addr.String()}, grpc.Header(&header))
if err != nil {
return nil, 0, err
}
blockHeight := header.Get(grpctypes.GRPCBlockHeightHeader)
if l := len(blockHeight); l != 1 {
return nil, 0, fmt.Errorf("unexpected '%s' header length; got %d, expected: %d", grpctypes.GRPCBlockHeightHeader, l, 1)
}
nBlockHeight, err := strconv.Atoi(blockHeight[0])
if err != nil {
return nil, 0, fmt.Errorf("failed to parse block height: %w", err)
}
var acc AccountI
if err := clientCtx.InterfaceRegistry.UnpackAny(res.Account, &acc); err != nil {
return nil, 0, err
}
return acc, int64(nBlockHeight), nil
}
// EnsureExists returns an error if no account exists for the given address else nil.
func (ar AccountRetriever) EnsureExists(clientCtx client.Context, addr sdk.AccAddress) error {
if _, err := ar.GetAccount(clientCtx, addr); err != nil {
return err
}
return nil
}
// GetAccountNumberSequence returns sequence and account number for the given address.
// It returns an error if the account couldn't be retrieved from the state.
func (ar AccountRetriever) GetAccountNumberSequence(clientCtx client.Context, addr sdk.AccAddress) (uint64, uint64, error) {
acc, err := ar.GetAccount(clientCtx, addr)
if err != nil {
return 0, 0, err
}
return acc.GetAccountNumber(), acc.GetSequence(), nil
}