R4R: Parsed Err msgs

PENDING.md

@@ -21,6 +21,7 @@ BREAKING CHANGES
 * SDK
  * [core] \#1807 Switch from use of rational to decimal
  * [types] \#1901 Validator interface's GetOwner() renamed to GetOperator()
+ * [types] \#2119 Parsed error messages and ABCI log errors to make them more human readable.
 
 * Tendermint
 
@@ -51,7 +52,7 @@ IMPROVEMENTS
  * [cli] #2060 removed `--select` from `block` command
 
 * Gaia
- * [x/stake] [#2023](https://github.com/cosmos/cosmos-sdk/pull/2023) Terminate iteration loop in `UpdateBondedValidators` and `UpdateBondedValidatorsFull` when the first revoked validator is encountered and perform a sanity check. 
+ * [x/stake] [#2023](https://github.com/cosmos/cosmos-sdk/pull/2023) Terminate iteration loop in `UpdateBondedValidators` and `UpdateBondedValidatorsFull` when the first revoked validator is encountered and perform a sanity check.
  * [x/auth] Signature verification's gas cost now accounts for pubkey type. [#2046](https://github.com/tendermint/tendermint/pull/2046)
 
 * SDK

types/errors.go

@@ -2,9 +2,11 @@ package types
 
 import (
  "fmt"
+ "strings"
 
  cmn "github.com/tendermint/tendermint/libs/common"
 
+ "github.com/cosmos/cosmos-sdk/wire"
  abci "github.com/tendermint/tendermint/abci/types"
 )
 
@@ -225,7 +227,11 @@ func (err *sdkError) TraceSDK(format string, args ...interface{}) Error {
 // Implements ABCIError.
 // Overrides err.Error.Error().
 func (err *sdkError) Error() string {
- return fmt.Sprintf("Error{%d:%d,%#v}", err.codespace, err.code, err.cmnError)
+ return fmt.Sprintf(`ERROR:
+Codespace: %d
+Code: %d
+Message: %#v
+`, err.codespace, err.code, parseCmnError(err.cmnError.Error()))
 }
 
 // Implements ABCIError.
@@ -245,13 +251,20 @@ func (err *sdkError) Code() CodeType {
 
 // Implements ABCIError.
 func (err *sdkError) ABCILog() string {
- return fmt.Sprintf(`=== ABCI Log ===
-Codespace: %v
-Code: %v
-ABCICode: %v
-Error: %#v
-=== /ABCI Log ===
-`, err.codespace, err.code, err.ABCICode(), err.cmnError)
+ cdc := wire.NewCodec()
+ parsedErrMsg := parseCmnError(err.cmnError.Error())
+ jsonErr := humanReadableError{
+ Codespace: err.codespace,
+ Code: err.code,
+ ABCICode: err.ABCICode(),
+ Message: parsedErrMsg,
+ }
+ bz, er := cdc.MarshalJSON(jsonErr)
+ if er != nil {
+ panic(er)
+ }
+ stringifiedJSON := string(bz)
+ return stringifiedJSON
 }
 
 func (err *sdkError) Result() Result {
@@ -268,3 +281,18 @@ func (err *sdkError) QueryResult() abci.ResponseQuery {
  Log: err.ABCILog(),
  }
 }
+
+func parseCmnError(err string) string {
+ if idx := strings.Index(err, "{"); idx != -1 {
+ err = err[idx+1 : len(err)-1]
+ }
+ return err
+}
+
+// nolint
+type humanReadableError struct {
+ Codespace CodespaceType `json:"codespace"`
+ Code CodeType `json:"code"`
+ ABCICode ABCICodeType `json:"abci_code"`
+ Message string `json:"message"`
+}

types/errors_test.go

@@ -57,7 +57,10 @@ func TestErrFn(t *testing.T) {
  err := errFn("")
  codeType := codeTypes[i]
  require.Equal(t, err.Code(), codeType, "Err function expected to return proper code. tc #%d", i)
+ require.Equal(t, err.Codespace(), CodespaceRoot, "Err function expected to return proper codespace. tc #%d", i)
  require.Equal(t, err.Result().Code, ToABCICode(CodespaceRoot, codeType), "Err function expected to return proper ABCICode. tc #%d")
+ require.Equal(t, err.QueryResult().Code, uint32(err.ABCICode()), "Err function expected to return proper ABCICode from QueryResult. tc #%d")
+ require.Equal(t, err.QueryResult().Log, err.ABCILog(), "Err function expected to return proper ABCILog from QueryResult. tc #%d")
  }
 
  require.Equal(t, ABCICodeOK, ToABCICode(CodespaceRoot, CodeOK))