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api: support errors extra information
Since Tarantool 2.4.1, iproto error responses contain extra info with backtrace [1]. After this patch, Error would contain ExtraInfo field (BoxError object), if it was provided. 1. https://www.tarantool.io/en/doc/latest/dev_guide/internals/box_protocol/#responses-for-errors Part of #209
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,220 @@ | ||
package tarantool | ||
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// BoxError is a type representing Tarantool `box.error` object: a single | ||
// MP_ERROR_STACK object with a link to the previous stack error. | ||
type BoxError struct { | ||
Type string // Type that implies source, for example "ClientError". | ||
File string // Source code file where error was caught. | ||
Line int64 // Line number in source code file. | ||
Message string // Text of reason. | ||
Errno int64 // Ordinal number of the error. | ||
Errcode int64 // Number of the error as defined in `errcode.h`. | ||
// Additional fields depending on error type. For example, if | ||
// type is "AccessDeniedError", then it will include "object_type", | ||
// "object_name", "access_type". | ||
Fields map[interface{}]interface{} | ||
Prev *BoxError // Previous error in stack. | ||
} | ||
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func (err BoxError) Depth() (depth int) { | ||
depth = 1 | ||
for err.Prev != nil { | ||
err = *err.Prev | ||
depth++ | ||
} | ||
return depth | ||
} | ||
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||
func decodeBoxErrorStack(d *decoder) (*BoxError, error) { | ||
var l, larr, l1, l2 int | ||
var errorStack []BoxError | ||
var err error | ||
var mapk, mapv interface{} | ||
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if l, err = d.DecodeMapLen(); err != nil { | ||
return nil, err | ||
} | ||
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for ; l > 0; l-- { | ||
var cd int | ||
if cd, err = d.DecodeInt(); err != nil { | ||
return nil, err | ||
} | ||
switch cd { | ||
case KeyErrorStack: | ||
if larr, err = d.DecodeArrayLen(); err != nil { | ||
return nil, err | ||
} | ||
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||
errorStack = make([]BoxError, larr) | ||
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||
for i := 0; i < larr; i++ { | ||
if l1, err = d.DecodeMapLen(); err != nil { | ||
return nil, err | ||
} | ||
|
||
for ; l1 > 0; l1-- { | ||
var cd1 int | ||
if cd1, err = d.DecodeInt(); err != nil { | ||
return nil, err | ||
} | ||
switch cd1 { | ||
case KeyErrorType: | ||
if errorStack[i].Type, err = d.DecodeString(); err != nil { | ||
return nil, err | ||
} | ||
case KeyErrorFile: | ||
if errorStack[i].File, err = d.DecodeString(); err != nil { | ||
return nil, err | ||
} | ||
case KeyErrorLine: | ||
if errorStack[i].Line, err = d.DecodeInt64(); err != nil { | ||
return nil, err | ||
} | ||
case KeyErrorMessage: | ||
if errorStack[i].Message, err = d.DecodeString(); err != nil { | ||
return nil, err | ||
} | ||
case KeyErrorErrno: | ||
if errorStack[i].Errno, err = d.DecodeInt64(); err != nil { | ||
return nil, err | ||
} | ||
case KeyErrorErrcode: | ||
if errorStack[i].Errcode, err = d.DecodeInt64(); err != nil { | ||
return nil, err | ||
} | ||
case KeyErrorFields: | ||
errorStack[i].Fields = make(map[interface{}]interface{}) | ||
if l2, err = d.DecodeMapLen(); err != nil { | ||
return nil, err | ||
} | ||
for ; l2 > 0; l2-- { | ||
if mapk, err = d.DecodeInterface(); err != nil { | ||
return nil, err | ||
} | ||
if mapv, err = d.DecodeInterface(); err != nil { | ||
return nil, err | ||
} | ||
errorStack[i].Fields[mapk] = mapv | ||
} | ||
default: | ||
if err = d.Skip(); err != nil { | ||
return nil, err | ||
} | ||
} | ||
} | ||
|
||
if i > 0 { | ||
errorStack[i-1].Prev = &errorStack[i] | ||
} | ||
} | ||
default: | ||
if err = d.Skip(); err != nil { | ||
return nil, err | ||
} | ||
} | ||
} | ||
|
||
if len(errorStack) > 0 { | ||
return &errorStack[0], nil | ||
} | ||
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return nil, nil | ||
} | ||
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// func encodeBoxError(enc *encoder, err BoxError) (*BoxError, error) { | ||
// var l, larr, l1, l2 int | ||
// var errorStack []BoxError | ||
// var err error | ||
// var mapk, mapv interface{} | ||
|
||
// if l, err = d.DecodeMapLen(); err != nil { | ||
// return nil, err | ||
// } | ||
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// for ; l > 0; l-- { | ||
// var cd int | ||
// if cd, err = d.DecodeInt(); err != nil { | ||
// return nil, err | ||
// } | ||
// switch cd { | ||
// case KeyErrorStack: | ||
// if larr, err = d.DecodeArrayLen(); err != nil { | ||
// return nil, err | ||
// } | ||
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||
// errorStack = make([]BoxError, larr) | ||
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||
// for i := 0; i < larr; i++ { | ||
// if l1, err = d.DecodeMapLen(); err != nil { | ||
// return nil, err | ||
// } | ||
|
||
// for ; l1 > 0; l1-- { | ||
// var cd1 int | ||
// if cd1, err = d.DecodeInt(); err != nil { | ||
// return nil, err | ||
// } | ||
// switch cd1 { | ||
// case KeyErrorType: | ||
// if errorStack[i].Type, err = d.DecodeString(); err != nil { | ||
// return nil, err | ||
// } | ||
// case KeyErrorFile: | ||
// if errorStack[i].File, err = d.DecodeString(); err != nil { | ||
// return nil, err | ||
// } | ||
// case KeyErrorLine: | ||
// if errorStack[i].Line, err = d.DecodeInt64(); err != nil { | ||
// return nil, err | ||
// } | ||
// case KeyErrorMessage: | ||
// if errorStack[i].Message, err = d.DecodeString(); err != nil { | ||
// return nil, err | ||
// } | ||
// case KeyErrorErrno: | ||
// if errorStack[i].Errno, err = d.DecodeInt64(); err != nil { | ||
// return nil, err | ||
// } | ||
// case KeyErrorErrcode: | ||
// if errorStack[i].Errcode, err = d.DecodeInt64(); err != nil { | ||
// return nil, err | ||
// } | ||
// case KeyErrorFields: | ||
// errorStack[i].Fields = make(map[interface{}]interface{}) | ||
// if l2, err = d.DecodeMapLen(); err != nil { | ||
// return nil, err | ||
// } | ||
// for ; l2 > 0; l2-- { | ||
// if mapk, err = d.DecodeInterface(); err != nil { | ||
// return nil, err | ||
// } | ||
// if mapv, err = d.DecodeInterface(); err != nil { | ||
// return nil, err | ||
// } | ||
// errorStack[i].Fields[mapk] = mapv | ||
// } | ||
// default: | ||
// if err = d.Skip(); err != nil { | ||
// return nil, err | ||
// } | ||
// } | ||
// } | ||
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||
// if i > 0 { | ||
// errorStack[i-1].Prev = &errorStack[i] | ||
// } | ||
// } | ||
// default: | ||
// if err = d.Skip(); err != nil { | ||
// return nil, err | ||
// } | ||
// } | ||
// } | ||
|
||
// if len(errorStack) > 0 { | ||
// return &errorStack[0], nil | ||
// } | ||
|
||
// return nil, nil | ||
// } |
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