happner elastic proxy
----------------------------

prerequisites:

node v7+

npm

run the 3 services

$3

##### elasticsearch 5.4

##### kibana 5.4

##### redis server

$3

``bash
docker-compose up
`




$3

`bash

#install deps
npm install happner-elastic-proxy
#test run
npm test

run the service locally:
git clone https://github.com/happner/happner-elastic-proxy.git && cd happner-elastic-proxy && npm install && node service/start proxy
`

#### running the proxy service:

##### assuming kibana and elasticsearch is on the same machine, and we have all the prerequisites installed:

1. modify kibana.yml:

`vi

elasticsearch.url: "http://localhost:55555"
elasticsearch.customHeaders: { "kibana_server_secret" : "username=_ADMIN&password=happn" }
elasticsearch.requestHeadersWhitelist: [ authorization, cookie ]

`
2. download and run proxy:

`bash

> git clone https://github.com/happner/happner-elastic-proxy.git && cd happner-elastic-proxy && npm install

> node service/start proxy

to start the proxy with non-default settings:

> node service/start proxy=proxy.port=55555,proxy.target=http://localhost:9200,proxy.log_output=true,proxy.log_output_errors_only=true

if log_output=true - requests are logged to the console

the elasticURL is adjusted to point to the elastic service, elastic requests are proxied to

`

3. navigate to http://localhost:4444/app/kibana and check proxy-ing is working.

#### running the proxy as a component:

`bash

npm i happner-elastic-proxy --save

`

`javascript

//starts the proxy service, we test pushing requests through it to elasticsearch, default listen port 55555 and target http://localhost:9200

var Service = require('happner-elastic-feed');

var proxyConfig = {};

var proxyService = new Service();

var http = require('http');

proxyService

.proxy(proxyConfig)

.then(function () {

http.get({
host: 'localhost',
port: 55555,
path: '/_cat/indices?v'
}, function(res) {

var body = '';

res.on('data', function(chunk) {
body += chunk;
});

res.on('end', function() {

console.log('successfully queried :::', body);

proxyService.stop()
.then(function(){
done();
})
.catch(done)
});

}).on('error', function(e) {
done(e);
});
})
.catch(function(e){
done(e);
})


`

for detailed proxy usage have a look at the tests.

Happner setup instructions in more detail here.

#### running the system as a component:

`bash

npm i happner-elastic-proxy --save

`

`javascript

var Service = require('happner-elastic-proxy');

var service = new Service();

var proxyConfig = {

};

service
.proxy(proxyConfig)
.then(function () {
//do something else
})


``

$3

- finish performance analysis tagging proxy
- create proxy with permissions check