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Intro "global" eventEmitter for loosely coupled inter-module communic…
…ation (DeviaVir#1324) * setup basics for eventEmitter driven module communication * get rid of unused dependency * document silent option * put conf loading before command line overrides
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,80 +1,63 @@ | ||
| var _ = require('lodash') | ||
| var path = require('path') | ||
| var minimist = require('minimist') | ||
| var minimist = require('minimist') | ||
| var version = require('./package.json').version | ||
| var EventEmitter = require('events') | ||
|
|
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| module.exports = function (cb) { | ||
| var zenbot = require('./') | ||
| var c = getConfiguration() | ||
| var zenbot = { version } | ||
| var args = minimist(process.argv.slice(3)) | ||
| var conf | ||
|
|
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| var defaults = require('./conf-sample') | ||
| Object.keys(defaults).forEach(function (k) { | ||
| if (typeof c[k] === 'undefined') { | ||
| c[k] = defaults[k] | ||
| if(!_.isUndefined(args.conf)){ | ||
| try { | ||
| conf = require(path.resolve(process.cwd(), args.conf)) | ||
| } catch (err) { | ||
| console.log('Fall back to conf.js, ' + err) | ||
| conf = require('./conf') | ||
| } | ||
| }) | ||
| zenbot.conf = c | ||
|
|
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| function withMongo () { | ||
| cb(null, zenbot) | ||
| } else { | ||
| conf = require('./conf') | ||
| } | ||
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| var authStr = '', authMechanism | ||
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| if(c.mongo.username){ | ||
| authStr = encodeURIComponent(c.mongo.username) | ||
| var defaults = require('./conf-sample') | ||
| _.defaultsDeep(conf, defaults) | ||
| zenbot.conf = conf | ||
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| var eventBus = new EventEmitter() | ||
| conf.eventBus = eventBus | ||
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| var authStr = '', authMechanism, connectionString | ||
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| if(c.mongo.password) authStr += ':' + encodeURIComponent(c.mongo.password) | ||
| if(conf.mongo.username){ | ||
| authStr = encodeURIComponent(conf.mongo.username) | ||
|
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| if(conf.mongo.password) authStr += ':' + encodeURIComponent(conf.mongo.password) | ||
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| authStr += '@' | ||
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| // authMechanism could be a conf.js parameter to support more mongodb authentication methods | ||
| authMechanism = 'DEFAULT' | ||
| } | ||
|
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| var u = (function() { | ||
| if (c.mongo.connectionString) { | ||
| return c.mongo.connectionString | ||
| } | ||
|
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| return 'mongodb://' + authStr + c.mongo.host + ':' + c.mongo.port + '/' + c.mongo.db + '?' + | ||
| (c.mongo.replicaSet ? '&replicaSet=' + c.mongo.replicaSet : '' ) + | ||
| if (conf.mongo.connectionString) { | ||
| connectionString = conf.mongo.connectionString | ||
| } else { | ||
| connectionString = 'mongodb://' + authStr + conf.mongo.host + ':' + conf.mongo.port + '/' + conf.mongo.db + '?' + | ||
| (conf.mongo.replicaSet ? '&replicaSet=' + conf.mongo.replicaSet : '' ) + | ||
| (authMechanism ? '&authMechanism=' + authMechanism : '' ) | ||
| })() | ||
| require('mongodb').MongoClient.connect(u, function (err, client) { | ||
| } | ||
|
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| require('mongodb').MongoClient.connect(connectionString, function (err, client) { | ||
| if (err) { | ||
| //zenbot.set('zenbot:db.mongo', null) | ||
| console.error('WARNING: MongoDB Connection Error: ', err) | ||
| console.error('WARNING: without MongoDB some features (such as backfilling/simulation) may be disabled.') | ||
| console.error('Attempted authentication string: ' + u) | ||
| return withMongo() | ||
| console.error('Attempted authentication string: ' + connectionString) | ||
| cb(null, zenbot) | ||
| return | ||
| } | ||
| var db = client.db(c.mongo.db) | ||
| var db = client.db(conf.mongo.db) | ||
| _.set(zenbot, 'conf.db.mongo', db) | ||
| withMongo() | ||
| cb(null, zenbot) | ||
| }) | ||
|
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| function getConfiguration() { | ||
| var args = minimist(process.argv.slice(3)) | ||
| var conf = undefined | ||
|
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| try { | ||
| if(!_.isUndefined(args.conf)){ | ||
| try { | ||
| conf = require(path.resolve(process.cwd(), args.conf)) | ||
| } catch (ee) { | ||
| console.log('Fall back to conf.js, ' + ee) | ||
| conf = require('./conf') | ||
| } | ||
| } else { | ||
| conf = require('./conf') | ||
| } | ||
| } | ||
| catch (e) { | ||
| console.log('Fall back to sample-conf.js, ' + e) | ||
| conf = {} | ||
| } | ||
|
|
||
| // prevent modifying cached module with a clone | ||
| return _.cloneDeep(conf) | ||
| } | ||
| } | ||
| } |
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