There was a defined type (`validationErrors`) for gathering several
validation errors and classify them with the `ErrValdiation errs.Class`.
`errs.Combine` doesn't maintain the classes of the errors to combine,
for example
```
var myClass errs.Class = "My error class"
err1 := myClass.Wrap(erros.New("error 1"))
err2 := myClass.Wrap(erros.New("error 2"))
err3 := errors.New("error 3")
combinedErr := errs.Combine(err1, err2, err3)
myClass.Has(combinedErr) // It returns false
// Even only passing errors with a class and with the same one for all
// of them
combinedErr := errs.Combine(err1, err2)
myClass.Has(combinedErr) // It returns false
```
Hence `validationErrors` didn't return what we expected to return when
calling its `Combine` method.
This commit delete the type and it replaces by `errs.Group` when there
are more than one error, and wrapping the `errs.Group.Err` returned
error with `ErrValiation` error class.
The bug caused the HTTP API server to return a 500 status code as you
can seee in the following log message extracted from the satellite
production logs:
```
code: 500
error: "console service: validation: full name can not be empty; validation: Your password needs at least 6 characters long; validation: mail: no address"
errorVerbose: "console service: validation: full name can not be empty; validation: Your password needs at least 6 characters long; validation: mail: no address
storj.io/storj/satellite/console.(*Service).CreateUser:593
storj.io/storj/satellite/console/consoleweb/consoleapi.(*Auth).Register:250
net/http.HandlerFunc.ServeHTTP:2047
storj.io/storj/private/web.(*RateLimiter).Limit.func1:90
net/http.HandlerFunc.ServeHTTP:2047
github.com/gorilla/mux.(*Router).ServeHTTP:210
storj.io/storj/satellite/console/consoleweb.(*Server).withRequest.func1:464
net/http.HandlerFunc.ServeHTTP:2047
net/http.serverHandler.ServeHTTP:2879
net/http.(*conn).serve:1930"
message: "There was an error processing your request"
```
The issues was that not being classified with `ErrValidation` class it
was not picked by the correct switch branch of the
`consoleapi.Auth.getStatusCode` method which is in the call chain to
`consoleapi.Auth.Register` method when it calls
`console.Service.CreateUser` and returns an error.
These changes should return the appropriated HTTP status code (Bad
Request) when `console.Service.CreateUser` returns a validation error.
Returning the appropriated HTTP statsus code also makes not to show this
as an error in the server logs because the Bad Request sttatus code gets
logged with debug level.
Change-Id: I869ea85788992ae0865c373860fbf93a40d2d387
errs.Class should not contain "error" in the name, since that causes a
lot of stutter in the error logs. As an example a log line could end up
looking like:
ERROR node stats service error: satellitedbs error: node stats database error: no rows
Whereas something like:
ERROR nodestats service: satellitedbs: nodestatsdb: no rows
Would contain all the necessary information without the stutter.
Change-Id: I7b7cb7e592ebab4bcfadc1eef11122584d2b20e0
Enable a new golangci-lint linter that has been added to the last
release. It reports a very little number of issues so they are fix it in
this commit.
Change-Id: I74fef4779c3f592aae19103fd9f70103586fe24e
