0.0.1 • Published 10 years ago
ohdear v0.0.1
ohdear
Because black swans happen.
This is a very simple module to enable periodic heap dump generation and launching webkit development tools on application start.
Hooks are provided to start/stop webkit development tools programatically or to take heapdump snapshots on demand.
Examples
###Default. Heapdump every hour, no debug agent
var feck = require('ohdear');
console.log('the rest of your app goes here')
###Change heapdump periodicity to every minute
var feck = require('ohdear')({dumpInterval: 60000}); // 60000ms = 60s = 1m
console.log('the rest of you rapp goes here')
###Debug. Heapdump every hour, activate debug agent on start
var feck = require('ohdear')({activateAgentOnStart: true});
console.log('the rest of your app goes here')
###On demand heapdumps only with debug agent on start
var feck = require('ohdear')({dumpOnDemand: true, activateAgentOnStart: true});
console.log('the rest of your app goes here')
###Dump heap as you need
var feck = require('ohdear')({dumpOnDemand: true, activateAgentOnStart: true});
feck.snapshot(); // Whenever you want/need a heapdump
console.log('the rest of your app goes here')
###On demand debug agent enable/disable
var feck = require('ohdear')({dumpOnDemand: true, activateAgentOnStart: true});
feck.toggle(); // Activated -> Deactivated
feck.toggle(); // Deactivated -> Activated
console.log('the rest of your app goes here')
###Is the debug agent running
var feck = require('ohdear')();
feck.isWatching(); // false, unless activated on start option is provided as above
###Log interactions
var feck = require('ohdear')();
feck.onActivate(function() {
console.log("Activated debug agent");
});
feck.onDeactivate(function() {
console.log("Deactivated debug agent");
});
feck.onDump(function() {
console.log("Taking a dump");
});
0.0.1
10 years ago