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errors, child_process: migrate to using internal/errors #11300

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@jasnell jasnell commented Feb 10, 2017

Ref: #11273

Semver-major because error messages are changed.

Checklist
  • make -j4 test (UNIX), or vcbuild test (Windows) passes
  • tests and/or benchmarks are included
  • documentation is changed or added
  • commit message follows commit guidelines
Affected core subsystem(s)

errors, child_process

@jasnell jasnell added the semver-major PRs that contain breaking changes and should be released in the next major version. label Feb 10, 2017
@nodejs-github-bot nodejs-github-bot added child_process Issues and PRs related to the child_process subsystem. errors Issues and PRs related to JavaScript errors originated in Node.js core. labels Feb 10, 2017
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jasnell commented Mar 22, 2017

@nodejs/ctc ... can I please get a review on this?

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jasnell commented Mar 22, 2017

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jasnell commented Mar 22, 2017

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almost there

an argument of the wrong type has been passed to a Node.js API.

<a id="ERR_INVALID_HANDLE_TYPE"></a>
###ERR_INVALID_HANDLE_TYPE
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missing space

### ERR_INVALID_OPT_VALUE

The `'ERR_INVALID_OPT_VALUE'` error code is used generically to identify when
an invalid or unexpected value has been passed on an options object.
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nit: passed in?

### ERR_IPC_ONE_PIPE

The `'ERR_IPC_ONE_PIPE'` error code is used when an attempt is made to create
a child Node.js process using more than one IPC communications channel.
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nit: communication

## Node.js Error Codes

<a id="ERR_CHANNEL_CLOSED"></a>
### ERR_CHANNEL_CLOSED
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maybe ERR_IPC_CHANNEL_CLOSED?

<a id="ERR_INVALID_HANDLE_TYPE"></a>
###ERR_INVALID_HANDLE_TYPE

The '`ERR_INVALID_HANDLE_TYPE`' error code is used when an attempt is made to
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ditto. ERR_IPC_INVALID_HANDLE_TYPE

// Add new errors from here...

function invalidArgType(name, expected, actual) {
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If I read it correctly, this would print The "options" argument must be type Object. It looks better to me as The "options" argument must be of type Object

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It would be nice to have some tests for this function OK, tests are in #11294

@@ -772,11 +773,10 @@ function _validateStdio(stdio, sync) {
case 'ignore': stdio = ['ignore', 'ignore', 'ignore']; break;
case 'pipe': stdio = ['pipe', 'pipe', 'pipe']; break;
case 'inherit': stdio = [0, 1, 2]; break;
default: throw new TypeError('Incorrect value of stdio option: ' + stdio);
default: throw new errors.TypeError('ERR_INVALID_OPT_VALUE', stdio);
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The name argument is missing

}
} else if (!Array.isArray(stdio)) {
throw new TypeError('Incorrect value of stdio option: ' +
util.inspect(stdio));
throw new errors.TypeError('ERR_INVALID_OPT_VALUE', util.inspect(stdio));
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ditto

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Generally looks ok to me, but needs updates requested by @targos

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jasnell commented Apr 20, 2017

@targos @mhdawson ... this is unblocked now. PR is updated. PTAL

@jasnell jasnell removed the blocked PRs that are blocked by other issues or PRs. label Apr 20, 2017
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jasnell commented Apr 21, 2017

@@ -54,7 +61,6 @@ function message(key, args) {
// Utility function for registering the error codes. Only used here. Exported
// *only* to allow for testing.
function E(sym, val) {
assert(messages.has(sym) === false, `Error symbol: ${sym} was already used.`);
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Why did you remove this check? (The test for it is removed in the second commit btw)

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Because of issues in the loading order of the errors.js module relative to assert.js on startup. There is a circular dependency that happens that causes the util.js used within assert.js to fail depending on when assert is loaded. I could replace this with a simple throw rather than the call to assert if you'd be more comfortable with that.

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I'm fine with removing it. I was just curious. The risk of reusing the same code is low if we keep them together and in alphabetical order.

@@ -86,12 +86,32 @@ module.exports = exports = {
//
// Note: Please try to keep these in alphabetical order
E('ERR_ASSERTION', (msg) => msg);

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unnecessary new line

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whoops! fixed

E('ERR_INVALID_ARG_TYPE', invalidArgType);
E('ERR_INVALID_CALLBACK', 'callback must be a function');
E('ERR_STDERR_CLOSE', 'process.stderr cannot be closed');
E('ERR_STDOUT_CLOSE', 'process.stdout cannot be closed');
E('ERR_UNKNOWN_STDIN_TYPE', 'Unknown stdin file type');
E('ERR_UNKNOWN_STREAM_TYPE', 'Unknown stream file type');
E('ERR_IPC_CHANNEL_CLOSED', 'channel closed');
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please keep the codes in alphabetical order relative to the existing ones.

@@ -125,12 +125,6 @@ assert.throws(() => {
message: /^Error for testing 2/ }));
}, /AssertionError: .+ does not match \S/);

assert.doesNotThrow(() => errors.E('TEST_ERROR_USED_SYMBOL'));
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please bundle this change with the same commit that removed the error

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jasnell commented Apr 24, 2017

@targos @mhdawson ... PTAL

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jasnell commented Apr 24, 2017

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LGTM. This needs a rebase.

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jasnell commented Apr 26, 2017

Rebased. Ping @mhdawson

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LGTM

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jasnell commented Apr 27, 2017

Thank you @mhdawson and @targos. Rebased again and new CI before landing: https://ci.nodejs.org/job/node-test-pull-request/7715/

Use of assert must be lazy to allow errors to be used early
before the process is completely set up
jasnell added a commit that referenced this pull request Apr 27, 2017
Use of assert must be lazy to allow errors to be used early
before the process is completely set up

PR-URL: #11300
Ref: #11273
Reviewed-By: Michaël Zasso <[email protected]>
Reviewed-By: Michael Dawson <[email protected]>
jasnell added a commit that referenced this pull request Apr 27, 2017
PR-URL: #11300
Ref: #11273
Reviewed-By: Michaël Zasso <[email protected]>
Reviewed-By: Michael Dawson <[email protected]>
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jasnell commented Apr 27, 2017

Landed in f0b7025 and 7632761

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