Generate call stack for sdk error and preserve stack trace

[richardlt]

1. Description

• Printing call stack and stack trace automatically in wrapped errors.
• Add UUID on error returned from API.
• Show error uuid in ctl when an error occured.
• Create admin endpoint to get error from Graylog by uuid.
• Create ctl command to get error by uuid.

2. Log strategy

• For a simple error: catched by the router and associated with a unknown sdk.Error, then logged with a UUID.
• For a sdk.Error: catched by the router the logged with a UUID.
• For a wrapped simple error: same as simple error but logged with stack trace and call stack.
• For a wrapped sdk.Error: same as sdk.Error but logged with stack trace and call stack.

3. Err return strategy

• All error from lib should be wrapped like sdk.WithStack(err) or sdk.WrapError(err, format, values...), WithStack and WrapError do not override existing callers on already wrapped errors. This will generate unknown http error (500).
• Create new error from existing sdk.Error like sdk.NewError(ErrForbidden, err). This will generated a predefined http error with stack trace. New errors can also be wrapped to add more details.
• Return sdk.Error{} or predefined sdk.Error like ErrForbidden. This will generated a http error that will be logged with a uuid but without stack trace or call stack.
• If a simple error is return it will be catched be the router and returns as an unknown error (500).
  @ovh/cds

[golangcibot]

Error return value of io.WriteString is not checked

[golangcibot]

Error return value of WriteJSON is not checked

[ovh-cds]

CDS Report build-ui#6240.0 ✘

• Compile

  • Build UI ✔
  • TU All -
  • TU model ✔
  • TU service ✘
  • TU shared ✔
  • TU views ✔
    Unit Tests Report

• HeadlessChrome 0.0.0 (Linux 0.0.0)

• HeadlessChrome 0.0.0 (Linux 0.0.0).2185480

  • CDS: pipeline Store should create/update and delete a job ✘

  • CDS: project Store should add/update/delete a variable ✘

  • CDS: project Store should add/update/delete a permission ✘

• HeadlessChrome 0.0.0 (Linux 0.0.0).2185482

• HeadlessChrome 0.0.0 (Linux 0.0.0).2185481

[fsamin]

LGTM,
you should have a look in the worker commands error management, it's a mess

[bnjjj]

bad import position

[bnjjj]

bad import position