NESU
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Setup

As CLI

Run this to install Nesu as a global package:
$ npm install -g @rappopo/nesu
Go to your project folder, and invoke:
$ nesu
The first time Nesu starts, it’ll create an empty config.json configuration file, transformer and last_seq folder in your project folder. Quit Nesu by pressing Ctrl-c and start customizing its configurations (please see details below).

As Library

Go to your node.js application project folder, and type:
$ npm install --save @rappopo/nesu
Create an empty new js file, e.g.: nesu.js, and enter the following code:
var nesu = require('@rappopo/nesu')
nesu()
Also create the config.json configuration file in the same folder as nesu.js file above like this example below:
{
"db": {
"mydb1": {
"idleTimeout": 0
},
"mydb2": {
"cdb": {
"url": "http://couchdb:5984",
"name": "mycouchdb1"
},
"es": {
"url": "http://elasticsearch:9200",
"name": "myesindex1"
},
"bulkLimit": 500,
"idleTimeout": 10
}
},
"default": {
"bulkLimit": 5000
}
}
And finaly:
$ node nesu.js
But most likely you’ll want to use a process manager like pm2.
Program will automatically create an empty config.js file if missing. Two empty folders transformer and last_seq will also be created.
You might also want to change the configuration object above dynamically within your script, like this:
...
nesu({ config: <config> })
...
The value of <config> will simply be merged with the above configuration file.