some updated TODOs for 2.x work
Trent Mick
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TODO.md
144
TODO.md
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@ -1,12 +1,22 @@
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# v2
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- ^C fix. Done in 1.8.9. However, see a recent ticket about ^C/EPIPE issues.
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I suspect the uncommited exeunt work will fix that.
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- node-exeunt
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- Exit handling:
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- make a ticket with notes from "bunyan CLI exit handling" section below
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- resolve it with the uncommited changes here
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- figure out how to 'make cutarelease' for 2.x but tag as beta
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- comment/grokking of bunyan.js flushing issues at
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https://github.com/trentm/node-bunyan/issues/37 would be nice. Even if just a
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link to exeunt and some examples. Wiki page?
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- respond to Qs here: https://github.com/trentm/node-bunyan/issues/37#issuecomment-282933502
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- consider whether to backport the exit handling work to 1.x???
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- `createLogger(<config-and-fields>, <fields>)` changes (#460)
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- see section below
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- the dtrace-provider thing (#487)
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TODO: answer Cody email
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- https://github.com/trentm/node-bunyan/issues/398 if easy, perhaps on 1.x
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as well
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- use package.json version for VERSION
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- use deps
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- dashdash
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@ -19,6 +29,134 @@
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- formatters: read up again on `glp master..1.x`
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- support for customer formatters
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- for the CLI as well? How? ~/.bunyanrc?
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- if doing ~/.bunyanrc, then consider color schemes
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# bunyan CLI exit handling
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It has some problems currently.
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One basic problem is that our stdout.on('error') handler can call into
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drainStdoutAndExit multiple times, leading to the multiple Event Emitters
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leak warning, and with a pager we are waiting for the pager to exit.
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Why doesn't the pager exit on ^C? Is that a less thing? Perhaps due to our
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LESS opts?
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Setting up a file to work with:
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```javascript
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$ cat lots.js
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var bunyan = require('./')
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var log = bunyan.createLogger({
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name: 'lots',
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streams: [
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{
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type: 'file',
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path: './lots.log'
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}
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]
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});
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N = Math.pow(2, 16);
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for (var i = N; i >= 0; i--) {
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log.info({i: i}, 'another record');
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}
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$ node lots.js
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```
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## Issue 1: EventEmitter mem leak
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```
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$ node --version
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v4.8.0
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$ ./bin/bunyan lots.log | cat
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[2017-04-05T01:47:15.899Z] INFO: lots/53218 on danger0.local: another record (i=65536)
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[2017-04-05T01:47:15.901Z] INFO: lots/53218 on danger0.local: another record (i=65535)
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...
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^C # ^C quickly before it is done writing rendered logs
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...
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[2017-04-05T01:47:16.023Z] INFO: lots/53218 on danger0.local: another record (i=57351)
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[2017-04-05T01:47:16.023Z] INFO: lots/53218
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^C(node) warning: possible EventEmitter memory leak detected. 11 drain listeners added. Use emitter.setMaxListeners() to increase limit.
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Trace
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at Socket.addListener (events.js:239:17)
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at Socket.Readable.on (_stream_readable.js:680:33)
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at drainStdoutAndExit (/Users/trentm/tm/node-bunyan/bin/bunyan:1116:12)
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at Socket.<anonymous> (/Users/trentm/tm/node-bunyan/bin/bunyan:1597:13)
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at emitOne (events.js:77:13)
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at Socket.emit (events.js:169:7)
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at onwriteError (_stream_writable.js:313:10)
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at onwrite (_stream_writable.js:331:5)
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at WritableState.onwrite (_stream_writable.js:90:5)
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at fireErrorCallbacks (net.js:457:13)
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```
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## Issue 2: "write after end" infinite loop with ^C in pager
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Mac. Node v4.8.0. Happens with node 0.10 as well.
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```
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$ ./bin/bunyan lots.log
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[2017-04-05T01:47:15.899Z] INFO: lots/53218 on danger0.local: another record (i=65536)
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[2017-04-05T01:47:15.901Z] INFO: lots/53218 on danger0.local: another record (i=65535)
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[2017-04-05T01:47:15.901Z] INFO: lots/53218 on danger0.local: another record (i=65534)
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...
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^C
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...
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[2017-04-05T01:47:15.909Z] INFO: lots/53218 on danger0.local: another record (i=65490)
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:[Error: write after end]
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[Error: write after end]
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[Error: write after end]
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[Error: write after end]
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[Error: write after end]
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(node) warning: possible EventEmitter memory leak detected. 11 drain listeners added. Use emitter.setMaxListeners() to increase limit.
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Trace
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at Socket.addListener (events.js:239:17)
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at Socket.Readable.on (_stream_readable.js:680:33)
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at drainStdoutAndExit (/Users/trentm/tm/node-bunyan/bin/bunyan:1116:12)
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at Socket.<anonymous> (/Users/trentm/tm/node-bunyan/bin/bunyan:1600:13)
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at emitOne (events.js:77:13)
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at Socket.emit (events.js:169:7)
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at writeAfterEnd (_stream_writable.js:169:10)
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at Socket.Writable.write (_stream_writable.js:212:5)
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at Socket.write (net.js:645:40)
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at emit (/Users/trentm/tm/node-bunyan/bin/bunyan:1097:32)
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[Error: write after end]
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[Error: write after end]
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[Error: write after end]
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[Error: write after end]
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... # this goes forever until 'q' to quit pager
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```
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With bunyan's internal `_DEBUG`:
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```
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...
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[2017-04-05T01:47:15.909Z] INFO: lots/53218 on danger0.local: another record (i=65491)
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[2017-04-05T01:47:15.909Z] INFO: lots/53218 on danger0.local: another record (i=65490)
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:(bunyan: cleanupAndExit)
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(stdout error event: Error: write after end)
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[Error: write after end]
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(drainStdoutAndExit(1))
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(stdout error event: Error: write after end)
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[Error: write after end]
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(drainStdoutAndExit(1))
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(stdout error event: Error: write after end)
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[Error: write after end]
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(drainStdoutAndExit(1))
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(stdout error event: Error: write after end)
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[Error: write after end]
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...
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(drainStdoutAndExit(1))
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(stdout error event: Error: write EPIPE)
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(drainStdoutAndExit(0))
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(bunyan: pager exit)
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(bunyan: pager exit -> process.exit(1))
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```
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# changes to ctor and log.child to separate fields from config
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