pulumi/sdk/nodejs/errors.ts
joeduffy 141a112950 Improve output formatting
This change improves our output formatting by generally adding
fewer prefixes.  As shown in pulumi/pulumi#359, we were being
excessively verbose in many places, including prefixing every
console.out with "langhost[nodejs].stdout: ", displaying full
stack traces for simple errors like missing configuration, etc.

Overall, this change includes the following:

* Don't prefix stdout and stderr output from the program, other
  than the standard "info:" prefix.  I experimented with various
  schemes here, but they all felt gratuitous.  Simply emitting
  the output seems fine, especially as it's closer to what would
  happen if you just ran the program under node.

* Do NOT make writes to stderr fail the plan/deploy.  Previously
  we assumed that any console.errors, for instance, meant that
  the overall program should fail.  This simply isn't how stderr
  is treated generally and meant you couldn't use certain
  logging techniques and libraries, among other things.

* Do make sure that stderr writes in the program end up going to
  stderr in the Pulumi CLI output, however, so that redirection
  works as it should.  This required a new Infoerr log level.

* Make a small fix to the planning logic so we don't attempt to
  print the summary if an error occurs.

* Finally, add a new error type, RunError, that when thrown and
  uncaught does not result in a full stack trace being printed.
  Anyone can use this, however, we currently use it for config
  errors so that we can terminate with a pretty error message,
  rather than the monstrosity shown in pulumi/pulumi#359.
2017-09-23 05:20:11 -07:00

13 lines
388 B
TypeScript

// Copyright 2016-2017, Pulumi Corporation. All rights reserved.
/**
* RunError can be used for terminating a program abruptly, but resulting in a clean exit rather than the usual
* verbose unhandled error logic which emits the source program text and complete stack trace.
*/
export class RunError extends Error {
constructor(message: string) {
super(message);
}
}