6A. Give every failure a channel that is on in production - #61
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6A. Give every failure a channel that is on in production#61nikolaystrikhar wants to merge 10 commits into
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Registry\Reader::flush() rethrew the registrar's duplicate-slug refusal out of the read, and it could only do that once: the buffer is emptied before the hand-over, so the next read returned at the empty-buffer guard. Whichever pass read first paid for it. On an admin GET the conflict pass at plugins_loaded priority 5 read first, caught, and resolved no conflict at all, while the load pass at 6 found the buffer drained and loaded everything -- so wp-admin looked healthy. On the front end, on a POST, on cron and under WP-CLI the gatekeeper turns the conflict pass away, so the load pass read first, caught, and returned having loaded none of the site's bundled plugins, on every request, for as long as the duplicate existed. The refusal is now reported through _doing_it_wrong() where it is found, and the read answers with what the registrar legitimately holds. One mistaken registration costs the host that one registration. Reported as it is discovered rather than at every read. The buffer drains once per process and registration runs at plugin-file scope, so that is one report per request for as long as the duplicate exists -- honest and unmissable -- where re-reporting from a remembered collision would print the same sentence twice in every admin request, once for each pass, and again for an activation-error rewrite, and would put a second piece of static state on the reader to do it. A registration that arrives after a read is still checked when it drains, so a later collision still reports, and every collision in a batch reports rather than only the first: nothing rations the report now that it is not a single rethrown exception. Loader::load_all() and Boot\Scheduler::resolve_conflicts() lose the catch ( Config_Exception ) around the read, which nothing can reach any more. The per-sub-plugin catch ( Throwable ) inside the load loop stays, and so does the conflict step's Throwable backstop -- a host's gate, probe or resolver can still throw, and a host-bound registrar's all() can still throw from the read itself.
`Absorber::all()` and both of `Conflict\Rewriter`'s registry reads still declared a duplicate slug as a Config_Exception their callers had to handle. The read reports and carries on now, so the only cause left on those paths is a missing container or a missing hook prefix -- which is what each tag names.
cspell runs over src/ in the analysis workflow, so a comment is as much a gated artefact as the code under it. The plainer phrasing is the one the rest of the file already uses.
📝 WalkthroughWalkthroughThe PR adds ChangesError reporting channel
Estimated code review effort: 3 (Moderate) | ~25 minutes Merge Risk: 🟡 Moderate · up to The new production error channel can still be interrupted by an existing callback that throws, which may suppress failure reporting and prevent later sub-plugins from loading. Merge should wait until those callbacks are safely contained. Sequence Diagram(s)sequenceDiagram
participant RuntimeComponent
participant Reports_Errors
participant ErrorAction
participant WordPress
RuntimeComponent->>Reports_Errors: report_error(message, sub-plugin)
Reports_Errors->>WordPress: _doing_it_wrong()
Reports_Errors->>ErrorAction: dispatch prefixed error action
ErrorAction-->>Reports_Errors: return or throw
Reports_Errors->>WordPress: report listener exception
Suggested reviewers: 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
✨ Finishing Touches📝 Generate docstrings
🧪 Generate unit tests (beta)
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In `@src/Traits/Reports_Errors.php`:
- Around line 52-82: Update report_error and both _doing_it_wrong call sites so
exceptions from doing_it_wrong_run listeners are caught without recursively
invoking _doing_it_wrong(); route them through a non-recursive helper that
safely contains Throwable and allows the error action or recovery path to
finish. Add coverage for the initial and listener-failure paths, asserting the
next sub-plugin still loads.
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AGENTS.mdREADME.mddocs/actions.mddocs/filters.mdsrc/Absorber.phpsrc/Boot/Scheduler.phpsrc/Conflict/Resolver.phpsrc/Loader.phpsrc/Registry/Reader.phpsrc/Traits/Guards_Hook_Prefix.phpsrc/Traits/Reports_Errors.phptests/unit/Boot/SchedulerTest.phptests/unit/Conflict/ResolverTest.phptests/unit/LoaderTest.phptests/unit/Registry/ReaderTest.php
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…g guards that went
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Both docs said the collision surfaces on plugins_loaded. That is where it normally lands, because the passes are what read first -- but the trigger is the read, not the hook, and a host that calls Absorber::all() itself at plugin-file scope drains the buffer and gets the report there instead. The sentence already said registrations are buffered until the first read; this just makes that half the trigger and leaves the hook as the usual case.
src/ made nine _doing_it_wrong() calls and no do_action() at all. Core's _doing_it_wrong() fires doing_it_wrong_run and then emits nothing unless WP_DEBUG is on, so on a production site every failure this library detects -- a typo'd bundled_plugin_file, a sub-plugin that threw during require, a conflict that could not be resolved, a duplicate slug, a boot that came too late to wire -- happened in complete silence. A host debugging "the add-on isn't there" had nothing to pull on. One action, named through Config::get_hook_name() like the filters: error( string $message, ?Sub_Plugin ). _doing_it_wrong() stays exactly as it was; it is the developer channel, and taking it away would regress every WP_DEBUG site. Traits\Reports_Errors joins the two channels in one method, so the failure this library is likeliest to add next -- a new gate -- cannot report down only one of them. It never throws whatever a listener does: the error action fires from inside handlers whose entire purpose is that nothing escapes them, and a diagnostic that could white-screen plugins_loaded would be a worse bug than the silence it replaces. A listener that throws is reported with a plain _doing_it_wrong(), never a second announcement, so one that throws every time cannot recurse. The hook prefix is what names these hooks, which makes a bootstrap that never set one the single failure the error action cannot carry. Traits\Guards_Hook_Prefix reports it through the shared method anyway: the name is built inside a try, and the case is stated in one place rather than left as a bare _doing_it_wrong() at a call site somebody has to notice. Conflict\Resolver goes over with the rest. Its per-sub-plugin catch is the one report whose silence a site owner feels directly -- a standalone left running beside the bundled copy after the pass that was supposed to deal with it -- so leaving it on the developer channel alone would have left the channel blind to the half of the library a fatal depends on. docs/actions.md rather than a heading in docs/filters.md: the two answer opposite questions -- how do I change what the library does, against how do I find out what it did. Six of the seven source files here are that swap and carry no argument of their own, which is more than the PR size cap allowed. AGENTS.md names the exception in the same commit, rather than leaving the rule and the diff disagreeing.
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Closing: the premise doesn't hold. The registry work this PR appeared to carry is already on #57 — this branch was cut from a pre-rebase |
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Optional, not sure, could be useful
What: adds
{prefix}/plugin_absorber/error(string $message,?Sub_Plugin $sub_plugin), fired from the load pass, the conflict pass, the registry read, the boot sequence, bothAbsorbertrampolines and the hook-prefix guard.Usage:
Why this way:
Nine report sites, and not one reachable in production.
_doing_it_wrong()prints nothing withoutWP_DEBUG, so a typo inbundled_plugin_fileleaves a support engineer with a class that does not exist and an empty log._doing_it_wrong()stays, and the action joins it in one method.Traits\Reports_Errors::report_error()is both channels or neither, because the failure this library is likeliest to add next is a new gate — and a gate wired to one channel is invisible in exactly the way this exists to fix.Seven source files, taking the size cap's new exception. Six are the mechanical swap of one call for the other,
src/Traits/Reports_Errors.phpis the only file with a decision in it, andAGENTS.mdrecords the exception in the same commit.Summary by CodeRabbit
New Features
Documentation
Bug Fixes