goware/errorx

Feature-rich Golang error interface implementation with stack traces more than just string output

errorx

Feature-rich Golang error interface implementation inspired by Postgres error message style guide http://www.postgresql.org/docs/devel/static/error-style-guide.html

features

• Error codes
• Verbosity levels
• File and line on which the error occures (Debug+ verbosity level). Not 100% accurate, but close enough: shows file/line where errorx is rendered to string/JSON
• error Stack traces (on verbosity level Trace)
• Nested errors (both regular Golang error and Errorx)
• Everything Golang error has - it's a drop-in replacement, because it implements error interface
• Everything Golang errors package provides
• JSON errors you can just write to your webhandler

docs

http://godoc.org/github.com/goware/errorx

example output

json, nested error, verbosity: Trace

{
   "error_code":10,
   "error_message":"error message",
   "error_details":[
      "error details",
      "error hint"
   ],
   "cause":{
      "error_code":200,
      "error_message":"wrapped error message",
      "error_details":[
         "wrapped error details",
         "wrapped error hint"
      ]
   },
   "stack":[
      {
         "file":"errorx_test.go",
         "line":175,
         "function":"github.com/goware/errorx_test.TestJsonErrorEmbedding"
      },
      {
         "file":"testing.go",
         "line":447,
         "function":"testing.tRunner"
      },
      {
         "file":"asm_amd64.s",
         "line":2232,
         "function":"runtime.goexit"
      }
   ]
}

string (via .Error()), verbosity: Debug

errorx_test.go:28: error 10: error message | error details; error hint