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README.md

Starter Custom Component Package

This example source is in format of a Component Package. Component Packages are the recommended way to organize Bots Custom Components code and allow the custom component code to be more portable to different runtime environments.

A Component Package contains the component code of one or more custom components. The package as a unit can be loaded within an application, constituting a complete service runtime. The same component package can thus be used for running in different environments.

A Component Package consists of the following:

  • package.json
  • main.js
  • .npmignore
  • component file(s)

Usage

# install dependencies
npm install

# start server
npm start

# get component metadata
curl -X GET localhost:3000/components

# invoke custom component
curl -H "Content-Type: application/json" -d @./spec/sample.req.json localhost:3000/components/hello.world

package.json

The package.json file needs to have a "main" entry that is entry point for the consuming application. The example "main" entry is "main.js".

The package.json file has an optional entry for "@oracle/bots-node-sdk" in devDependencies, as the Bots Node SDK is used to assist dev/test of the component package. Alternatively, the version spec of the SDK could also be listed in peerDependencies.

NOTE: Certain runtime environments do not specify a required sdk version, therefore the version specified by the component package's dependency will be inspected.

{
  "name": "custom-component-default-pkg",
  "version": "1.0.0",
  "main": "main.js",
  "dependencies": {},
  "devDependencies": {
    "@oracle/bots-node-sdk": "^2.1.0"
  }
}

main.js

main.js exports the settings of the Component package. It has the following properties:

components Required property to specify the list of components the package exports. The value can be one of the formats below
cwd Optional propety to specify the working directory from which paths in components are based

components can be an object with property names being component names, and property value being the corresponding component module. For example:

module.exports = {
  components: {
      'hello.world': require('./components/hello.world')
  }
};

This format is the same format as registry.js for users of prior samples. Therefore, you could simply rename a registry.js to main.js, or specify accordingly in package.json.


components can be a string, or array of paths to component files or directories. For example:

module.exports = {
  components: [
    './components/hello.world'
  ]
};

or

module.exports = {
  components: [
    './components'
  ]
};

or

module.exports = {
  components: './components'
};

The main.js file will thus export all component modules or file/directory as the component package content.

.npmignore

The .npmignore file is used when exporting the Component Package (see below). It simply excludes the .tgz file from being included within the package archive.

component file(s)

There could be 1 or more component file(s) in a package. Component files can be organized in different sub-directories, or paths within your project, as long as they are listed in the main exports. Each custom component implementation exposes its metadata() and invoke() methods. See the example and additional documentation

Export the Component Package

A Component Package can be exported for deployment by running npm pack into a .tgz file. This .tgz file contains all custom files needed to construct a complete custom component runtime.

Running in Nodejs Express

See starter example and CLI documentation

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