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rest.go
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rest.go
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package longyclient
import (
"bytes"
"encoding/json"
"fmt"
"io"
"io/ioutil"
"net/http"
"strconv"
"time"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/x/auth"
longyApp "github.com/eco/longy"
longyCfg "github.com/eco/longy/key-service/config"
"github.com/sirupsen/logrus"
)
var (
netClient = &http.Client{
Timeout: 10 * time.Second,
}
cdc = longyApp.MakeCodec()
log = logrus.WithField("module", "longyclient")
)
// IsAttendeeKeyed -
func IsAttendeeKeyed(id int) (bool, error) {
if id < 0 {
return false, fmt.Errorf("id must be a positive integer")
}
restURL := longyCfg.LongyRestURL()
reqURL := restURL + fmt.Sprintf("/longy/attendees/%d/keyed", id)
resp, err := netClient.Get(reqURL)
if err != nil {
return false, err
}
defer resp.Body.Close() //nolint
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return false, err
}
keyed, err := strconv.ParseBool(string(body))
if err != nil {
return false, fmt.Errorf("unexpected attendee keyed response, %s", err)
}
return keyed, nil
}
// GetAccount -
func GetAccount(addr sdk.AccAddress) (auth.Account, error) {
restURL := longyCfg.LongyRestURL()
reqURL := restURL + fmt.Sprintf("/auth/accounts/%s", addr)
resp, err := netClient.Get(reqURL)
if err != nil {
return nil, err
}
defer resp.Body.Close() //nolint
return parseAccountFromBody(resp.Body)
}
// BroadcastAuthTx - mode = "sync|async|block"
func BroadcastAuthTx(tx *auth.StdTx, mode string) (*sdk.TxResponse, error) {
if mode != "sync" && mode != "async" && mode != "block" {
return nil, fmt.Errorf("incorrect broadcast mode")
}
restURL := longyCfg.LongyRestURL()
reqURL := restURL + "/longy/txs"
body := struct {
Tx *auth.StdTx `json:"tx"`
Mode string `json:"mode"`
}{Tx: tx, Mode: mode}
bz, err := cdc.MarshalJSON(body)
if err != nil {
return nil, err
}
resp, err := netClient.Post(reqURL, "application/json", bytes.NewReader(bz))
if err != nil {
return nil, err
}
defer resp.Body.Close() //nolint
// If we error in the following statements, key-service is broken at this point
// What is the right sequence number? It could have incremented, we cannot know forsure
//
// Right course of action is to panic and restart the service so the master account
// re-syncs with the full node
bz, err = ioutil.ReadAll(resp.Body)
if err != nil {
panic(err)
} else if resp.StatusCode != 200 {
log.WithField("status", resp.Status).WithField("body", string(bz)).
Error("non-ok broadcast tx submission response")
return nil, fmt.Errorf("broadcast tx response")
}
var res sdk.TxResponse
if err = cdc.UnmarshalJSON(bz, &res); err != nil {
panic(err)
}
return &res, nil
}
func parseAccountFromBody(body io.ReadCloser) (auth.Account, error) {
decoder := json.NewDecoder(body)
var b map[string]json.RawMessage
err := decoder.Decode(&b)
if err != nil {
return nil, err
}
var acc auth.BaseAccount
accBody, ok := b["result"]
if !ok {
return nil, fmt.Errorf("result not present in the body")
}
err = auth.ModuleCdc.UnmarshalJSON(accBody, &acc)
if err != nil {
return nil, err
}
return &acc, nil
}