Osseus Server

express based osseus web server module

Install

$ npm install @colucom/osseus-server

Usage with MOLECULER-WEB AS MIDDELWARE

Configuration

Mandatory:

To use the moleculer-web api gateway module as a middleware of the express, this configuration are mandatory.

• OSSEUS_MOLECULERWEB_LOAD: false

  • the init of the osseus module will be preformed as part of this module code and not in the init of the osseus it self.

• OSSEUS_SERVER_SHOULD_USE_MOLECULER_WEB_AS_MIDDLEWARE: true

  • this flag indicates to the module to use the moleculer-web osseus module.

Optional:

Logging

To use custom logging as a middleware of the express, it's necessary to config this 2 configurations.

• OSSEUS_SERVER_SHOULD_USE_CUSTOM_LOGGING_METHOD: true

• OSSEUS_SERVER_CUSTOM_LOGGING_METHOD_PATH: 'Custom Path'

  • the custom path of the logging middelware method in the original project that uses the osseus-server.

Custom middlewares

To use custom middelwares you should provide path to array of middleware functions.

• OSSEUS_SERVER_MIDDLEWARES_PATH: 'Custom Path'

  • the custom path of the array of middelware functions in the original project that uses the osseus-server.

Errors Map json

To use custom errors map json you should provide path to this json.

• OSSEUS_SERVER_ERRORS_MAP_PATH: 'Custom Path'

Handle 404 Errors - Redirect the request to another server

If you wish to redirect the request to another server when 404 not found error occures you should provide base url of this server.

• REDIRECT_BASE_URL: 'Custom URL'

Usage

Configuration

Mandatory:

• OSSEUS_SERVER_PORT

Optional:

• OSSEUS_SERVER_REQUEST_ID_HEADER
  • set request id header name to enable cc-request-id middleware
• OSSEUS_SERVER_MAINTENANCE_ENABLED
  • set to true to enable maintenance mode on server
• OSSEUS_SERVER_MAINTENANCE_MESSAGE
  • maintenance message sent to clients when maintenance mode is enabled
• OSSEUS_SERVER_MAINTENANCE_OVERRIDE_HEADER
  • bypass maintenance mode with this header
• OSSEUS_SERVER_ALLOWED_IP
  • list of ip addresses allowed to bypass maintenance mode
• OSSEUS_SERVER_COMPRESION_ENABLED
  • set to true to enable compression middleware
• OSSEUS_SERVER_COMPRESSION_LEVEL
  • compressions level if compression is enabled
• OSSEUS_SERVER_NO_COMPRESSION_HEADER
  • don't compress responses with this request header
• OSSEUS_SERVER_MORGAN_FORMAT
  • format for morgan
  • see morgan predefined formats
  • default is tiny
• OSSEUS_SERVER_CORS_WHITELIST
  • configuring CORS w/ dynamic origin
• OSSEUS_SERVER_STATIC_ENGINE_TYPE
• OSSEUS_SERVER_VIEWS_FOLDER
  • use template engines
• OSSEUS_SERVER_STATIC_FOLDER
  • serve static files
• OSSEUS_SERVER_ADD_HEALTHCHECK
  • add /healthcheck endpoint which returns OK with status code 200
• OSSEUS_SERVER_ADD_IS_RUNNING
  • add /is_running endpoint which returns OK with status code 200

Example

First, create index.js:

const Osseus = require('osseus')

const main = async () => {
    try {
        // init osseus
        const osseus = await Osseus.init()
    } catch (err) {
        console.error(err)
    }
}

main()

Running:

$ node index.js --OSSEUS_SERVER_PORT 8080

Will result in:

server is listening on port: 8080

Contributing

Please see contributing guidelines.

License

Code released under the MIT License.