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query.go
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query.go
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package context
import (
"fmt"
"io"
"github.com/cosmos/cosmos-sdk/client/keys"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/x/auth"
"github.com/pkg/errors"
"github.com/tendermint/tendermint/libs/common"
cmn "github.com/tendermint/tendermint/libs/common"
rpcclient "github.com/tendermint/tendermint/rpc/client"
ctypes "github.com/tendermint/tendermint/rpc/core/types"
)
// GetNode returns an RPC client. If the context's client is not defined, an
// error is returned.
func (ctx CLIContext) GetNode() (rpcclient.Client, error) {
if ctx.Client == nil {
return nil, errors.New("no RPC client defined")
}
return ctx.Client, nil
}
// Query performs a query for information about the connected node.
func (ctx CLIContext) Query(path string) (res []byte, err error) {
return ctx.query(path, nil)
}
// QueryStore performs a query from a Tendermint node with the provided key and
// store name.
func (ctx CLIContext) QueryStore(key cmn.HexBytes, storeName string) (res []byte, err error) {
return ctx.queryStore(key, storeName, "key")
}
// QuerySubspace performs a query from a Tendermint node with the provided
// store name and subspace.
func (ctx CLIContext) QuerySubspace(subspace []byte, storeName string) (res []sdk.KVPair, err error) {
resRaw, err := ctx.queryStore(subspace, storeName, "subspace")
if err != nil {
return res, err
}
ctx.Codec.MustUnmarshalBinary(resRaw, &res)
return
}
// GetAccount queries for an account given an address and a block height. An
// error is returned if the query or decoding fails.
func (ctx CLIContext) GetAccount(address []byte) (auth.Account, error) {
if ctx.AccDecoder == nil {
return nil, errors.New("account decoder required but not provided")
}
res, err := ctx.QueryStore(auth.AddressStoreKey(address), ctx.AccountStore)
if err != nil {
return nil, err
} else if len(res) == 0 {
return nil, err
}
account, err := ctx.AccDecoder(res)
if err != nil {
return nil, err
}
return account, nil
}
// GetFromAddress returns the from address from the context's name.
func (ctx CLIContext) GetFromAddress() (from sdk.AccAddress, err error) {
if ctx.FromAddressName == "" {
return nil, errors.Errorf("must provide a from address name")
}
keybase, err := keys.GetKeyBase()
if err != nil {
return nil, err
}
info, err := keybase.Get(ctx.FromAddressName)
if err != nil {
return nil, errors.Errorf("no key for: %s", ctx.FromAddressName)
}
return sdk.AccAddress(info.GetPubKey().Address()), nil
}
// GetAccountNumber returns the next account number for the given account
// address.
func (ctx CLIContext) GetAccountNumber(address []byte) (int64, error) {
account, err := ctx.GetAccount(address)
if err != nil {
return 0, err
}
return account.GetAccountNumber(), nil
}
// GetAccountSequence returns the sequence number for the given account
// address.
func (ctx CLIContext) GetAccountSequence(address []byte) (int64, error) {
account, err := ctx.GetAccount(address)
if err != nil {
return 0, err
}
return account.GetSequence(), nil
}
// BroadcastTx broadcasts transaction bytes to a Tendermint node.
func (ctx CLIContext) BroadcastTx(tx []byte) (*ctypes.ResultBroadcastTxCommit, error) {
node, err := ctx.GetNode()
if err != nil {
return nil, err
}
res, err := node.BroadcastTxCommit(tx)
if err != nil {
return res, err
}
if !res.CheckTx.IsOK() {
return res, errors.Errorf("checkTx failed: (%d) %s",
res.CheckTx.Code,
res.CheckTx.Log)
}
if !res.DeliverTx.IsOK() {
return res, errors.Errorf("deliverTx failed: (%d) %s",
res.DeliverTx.Code,
res.DeliverTx.Log)
}
return res, err
}
// BroadcastTxAsync broadcasts transaction bytes to a Tendermint node
// asynchronously.
func (ctx CLIContext) BroadcastTxAsync(tx []byte) (*ctypes.ResultBroadcastTx, error) {
node, err := ctx.GetNode()
if err != nil {
return nil, err
}
res, err := node.BroadcastTxAsync(tx)
if err != nil {
return res, err
}
return res, err
}
// EnsureAccountExists ensures that an account exists for a given context. An
// error is returned if it does not.
func (ctx CLIContext) EnsureAccountExists() error {
addr, err := ctx.GetFromAddress()
if err != nil {
return err
}
accountBytes, err := ctx.QueryStore(auth.AddressStoreKey(addr), ctx.AccountStore)
if err != nil {
return err
}
if len(accountBytes) == 0 {
return ErrInvalidAccount(addr)
}
return nil
}
// EnsureAccountExistsFromAddr ensures that an account exists for a given
// address. Instead of using the context's from name, a direct address is
// given. An error is returned if it does not.
func (ctx CLIContext) EnsureAccountExistsFromAddr(addr sdk.AccAddress) error {
accountBytes, err := ctx.QueryStore(auth.AddressStoreKey(addr), ctx.AccountStore)
if err != nil {
return err
}
if len(accountBytes) == 0 {
return ErrInvalidAccount(addr)
}
return nil
}
// EnsureBroadcastTx broadcasts a transactions either synchronously or
// asynchronously based on the context parameters. The result of the broadcast
// is parsed into an intermediate structure which is logged if the context has
// a logger defined.
func (ctx CLIContext) EnsureBroadcastTx(txBytes []byte) error {
if ctx.Async {
return ctx.ensureBroadcastTxAsync(txBytes)
}
return ctx.ensureBroadcastTx(txBytes)
}
func (ctx CLIContext) ensureBroadcastTxAsync(txBytes []byte) error {
res, err := ctx.BroadcastTxAsync(txBytes)
if err != nil {
return err
}
if ctx.JSON {
type toJSON struct {
TxHash string
}
if ctx.Logger != nil {
resJSON := toJSON{res.Hash.String()}
bz, err := ctx.Codec.MarshalJSON(resJSON)
if err != nil {
return err
}
ctx.Logger.Write(bz)
io.WriteString(ctx.Logger, "\n")
}
} else {
if ctx.Logger != nil {
io.WriteString(ctx.Logger, fmt.Sprintf("Async tx sent (tx hash: %s)\n", res.Hash))
}
}
return nil
}
func (ctx CLIContext) ensureBroadcastTx(txBytes []byte) error {
res, err := ctx.BroadcastTx(txBytes)
if err != nil {
return err
}
if ctx.JSON {
// since JSON is intended for automated scripts, always include
// response in JSON mode.
type toJSON struct {
Height int64
TxHash string
Response string
}
if ctx.Logger != nil {
resJSON := toJSON{res.Height, res.Hash.String(), fmt.Sprintf("%+v", res.DeliverTx)}
bz, err := ctx.Codec.MarshalJSON(resJSON)
if err != nil {
return err
}
ctx.Logger.Write(bz)
io.WriteString(ctx.Logger, "\n")
}
return nil
}
if ctx.Logger != nil {
resStr := fmt.Sprintf("Committed at block %d (tx hash: %s)\n", res.Height, res.Hash.String())
if ctx.PrintResponse {
resStr = fmt.Sprintf("Committed at block %d (tx hash: %s, response: %+v)\n",
res.Height, res.Hash.String(), res.DeliverTx,
)
}
io.WriteString(ctx.Logger, resStr)
}
return nil
}
// query performs a query from a Tendermint node with the provided store name
// and path.
func (ctx CLIContext) query(path string, key common.HexBytes) (res []byte, err error) {
node, err := ctx.GetNode()
if err != nil {
return res, err
}
opts := rpcclient.ABCIQueryOptions{
Height: ctx.Height,
Trusted: ctx.TrustNode,
}
result, err := node.ABCIQueryWithOptions(path, key, opts)
if err != nil {
return res, err
}
resp := result.Response
if !resp.IsOK() {
return res, errors.Errorf("query failed: (%d) %s", resp.Code, resp.Log)
}
return resp.Value, nil
}
// queryStore performs a query from a Tendermint node with the provided a store
// name and path.
func (ctx CLIContext) queryStore(key cmn.HexBytes, storeName, endPath string) ([]byte, error) {
path := fmt.Sprintf("/store/%s/%s", storeName, endPath)
return ctx.query(path, key)
}