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