nodezoo-search

nodezoo-search

• Lead: Dean McDonnell
• Sponsor: nearForm

A micro-service that provides search for NodeZoo. This micro-service requires an instance of elastic-search running in order to correctly function. If elastic-search cannot be reached the service will self terminate.

If you're using this microservice, and need help, you can:

• Post a github issue,
• Tweet to @nodezoo,
• Ask on the Gitter.

Running

This micro-service can be ran as part of a complete system or as a single isolated unit.

As a complete system

A special system repository is available that runs the complete system using Docker and Fuge.

• Nodezoo: The complete system

Isolated mode

To make testing easier this micro-service can be ran in 'isolated' mode. This mode allows testing over http using a well defined port. Please note isolated mode means patterns are not exposed via mesh.

To run in isolated mode,

• Clone this repository locally,
• Run npm install,
• Run SEARCH_ELASTIC_HOST=YOUR_HOST npm start isolated,

Note: You will need to know the cost of your vm if using Docker.

A simple http service is supported and can be called using Curl or other Rest client. The default port is 8060. It can be changed using the SEARCH_PORT environment variable.

curl -d '{"role":"search","cmd":"search","query":"hapi"}' http://localhost:8060/act

Configuration

Running Elastic

A running instance of elastic search is required to use this service. Assuming you have docker installed.

• Start your docker machine if required
• Run eval $(docker-machine env default) to enable docker in your shell.
• Run docker-compose -f test/elastic.yml up to start elastic

Please note, in isolation mode you need to pass the host ip of your docker-machine if you are on an OS other than linux, obtain with docker-machine ip default.

Environment Variables

Various settings can be changed using environment variables, see the list below for all available variable names.

SEARCH_HOST

• The host to listen on in isolated mode.
• Defaults to localhost

SEARCH_PORT

• The port to listen on in isolated mode.
• Defaults to 8060 .

SEARCH_ELASTIC_HOST

• The host elastic will listen on.
• Defaults to localhost

SEARCH_ELASTIC_PORT

• The port elastic will listen on.
• Defaults to 9200 .

SEARCH_ISOLATED

• Starts isolated mode.
• Defaults to false.

Messages Handled

This micro-service emits the following messages.

role:search,cmd:upsert

Adds or inserts a record into elastic search

seneca.act(`role:search,cmd:upsert`, {data: {name:'seneca', ...}})

role:search,cmd:search

Applies the provided query to elastic-search and returns the results.

seneca.act(`role:search,cmd:search`, {query: 'seneca'}, (err, reply) => {})

role:info,info:updated

Aliases upsert, this pattern is an integration point for the nodezoo system. It allows the info micro-service to upsert without specifically calling nodezoo-search.

seneca.act(`role:info,info:updated`, {data: {name:'seneca', ...}})

Messages Emitted

This micro-service emits no messages.

Contributing

The NodeZoo org encourages open and safe participation.

• Code of Conduct

If you feel you can help in any way, be it with documentation, examples, extra testing, or new features please get in touch.

License

Copyright (c) 2014 - 2016, Richard Rodger and other contributors. Licensed under MIT.