feat: Query txs by signature and by address+seq (backport cosmos#9750) (

cosmos#9782)

* feat: Query txs by signature and by address+seq (cosmos#9750)

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## Description

Closes: cosmos#9741

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---

### Author Checklist

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please add links to any relevant follow up issues.*

I have...

- [ ] included the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] added `!` to the type prefix if API or client breaking change
- [ ] targeted the correct branch (see [PR Targeting](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#pr-targeting))
- [ ] provided a link to the relevant issue or specification
- [ ] followed the guidelines for [building modules](https://github.com/cosmos/cosmos-sdk/blob/master/docs/building-modules)
- [ ] included the necessary unit and integration [tests](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#testing)
- [ ] added a changelog entry to `CHANGELOG.md`
- [ ] included comments for [documenting Go code](https://blog.golang.org/godoc)
- [ ] updated the relevant documentation or specification
- [ ] reviewed "Files changed" and left comments if necessary
- [ ] confirmed all CI checks have passed

### Reviewers Checklist

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your handle next to the items reviewed if you only reviewed selected items.*

I have...

- [ ] confirmed the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] confirmed `!` in the type prefix if API or client breaking change
- [ ] confirmed all author checklist items have been addressed
- [ ] reviewed state machine logic
- [ ] reviewed API design and naming
- [ ] reviewed documentation is accurate
- [ ] reviewed tests and test coverage
- [ ] manually tested (if applicable)

(cherry picked from commit 7c19434)

# Conflicts:
#	CHANGELOG.md
#	x/auth/client/cli/query.go

* Fix conflicts

* Fix cl

* Fix conflicts

Co-authored-by: Amaury <1293565+amaurym@users.noreply.github.com>

CHANGELOG.md

@@ -37,6 +37,10 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ## [Unreleased]
 
+### Features
+
+* [\#9750](https://github.com/cosmos/cosmos-sdk/pull/9750) Emit events for tx signature and sequence, so clients can now query txs by signature (`tx.signature='<base64_sig>'`) or by address and sequence combo (`tx.acc_seq='<addr>/<seq>'`).
+
 ### Improvements
 
 * (cli) [\#9717](https://github.com/cosmos/cosmos-sdk/pull/9717) Added CLI flag `--output json/text` to `tx` cli commands.

types/events.go

@@ -227,7 +227,6 @@ var (
 
 	AttributeKeyAccountSequence = "acc_seq"
 	AttributeKeySignature       = "signature"
-	AttributeKeyFee             = "fee"
 
 	EventTypeMessage = "message"
 

x/auth/client/cli/query.go

@@ -218,12 +218,12 @@ $ %s query txs --%s 'message.sender=cosmos1...&message.action=withdraw_delegator
 func QueryTxCmd() *cobra.Command {
 	cmd := &cobra.Command{
 		Use:   "tx --type=[hash|acc_seq|signature] [hash|acc_seq|signature]",
-		Short: "Query for a transaction by hash, \"<addr>/<seq>\" combination or comma-separated signatures in a committed block",
+		Short: "Query for a transaction by hash, addr++seq combination or signature in a committed block",
 		Long: strings.TrimSpace(fmt.Sprintf(`
 Example:
 $ %s query tx <hash>
-$ %s query tx --%s=%s <addr>/<sequence>
-$ %s query tx --%s=%s <sig1_base64>,<sig2_base64...>
+$ %s query tx --%s=%s <addr>:<sequence>
+$ %s query tx --%s=%s <sig1_base64,sig2_base64...>
 `,
 			version.AppName,
 			version.AppName, flagType, typeAccSeq,

x/auth/client/testutil/suite.go

@@ -425,76 +425,6 @@ func (s *IntegrationTestSuite) TestCLIQueryTxCmdByEvents() {
 	}
 }
 
-func (s *IntegrationTestSuite) TestCLIQueryTxsCmdByEvents() {
-	val := s.network.Validators[0]
-
-	account2, err := val.ClientCtx.Keyring.Key("newAccount2")
-	s.Require().NoError(err)
-
-	sendTokens := sdk.NewInt64Coin(s.cfg.BondDenom, 10)
-
-	// Send coins.
-	out, err := s.createBankMsg(
-		val, account2.GetAddress(),
-		sdk.NewCoins(sendTokens),
-	)
-	s.Require().NoError(err)
-	var txRes sdk.TxResponse
-	s.Require().NoError(val.ClientCtx.Codec.UnmarshalJSON(out.Bytes(), &txRes))
-	s.Require().NoError(s.network.WaitForNextBlock())
-
-	// Query the tx by hash to get the inner tx.
-	out, err = clitestutil.ExecTestCLICmd(val.ClientCtx, authcli.QueryTxCmd(), []string{txRes.TxHash, fmt.Sprintf("--%s=json", tmcli.OutputFlag)})
-	s.Require().NoError(err)
-	s.Require().NoError(val.ClientCtx.Codec.UnmarshalJSON(out.Bytes(), &txRes))
-
-	testCases := []struct {
-		name        string
-		args        []string
-		expectEmpty bool
-	}{
-		{
-			"fee event happy case",
-			[]string{
-				fmt.Sprintf("--events=tx.fee=%s",
-					sdk.NewCoins(sdk.NewCoin(s.cfg.BondDenom, sdk.NewInt(10))).String()),
-				fmt.Sprintf("--%s=json", tmcli.OutputFlag),
-			},
-			false,
-		},
-		{
-			"no matching fee event",
-			[]string{
-				fmt.Sprintf("--events=tx.fee=%s",
-					sdk.NewCoins(sdk.NewCoin(s.cfg.BondDenom, sdk.NewInt(0))).String()),
-				fmt.Sprintf("--%s=json", tmcli.OutputFlag),
-			},
-			true,
-		},
-	}
-
-	for _, tc := range testCases {
-		tc := tc
-		s.Run(tc.name, func() {
-			cmd := authcli.QueryTxsByEventsCmd()
-			clientCtx := val.ClientCtx
-
-			out, err := clitestutil.ExecTestCLICmd(clientCtx, cmd, tc.args)
-			s.Require().NoError(err)
-
-			var result sdk.SearchTxsResult
-			s.Require().NoError(val.ClientCtx.Codec.UnmarshalJSON(out.Bytes(), &result))
-
-			if tc.expectEmpty {
-				s.Require().Equal(0, len(result.Txs))
-			} else {
-				s.Require().NotEqual(0, len(result.Txs))
-				s.Require().NotNil(result.Txs[0])
-			}
-		})
-	}
-}
-
 func (s *IntegrationTestSuite) TestCLISendGenerateSignAndBroadcast() {
 	val1 := s.network.Validators[0]