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On this page
  • fastifyRoutes
  • graphql
  • graphqlSchema
  • jsResource
  • loadEnv
  • rest
  • roles
  • static
  1. Developers
  2. Components

Built-In Components

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Last updated 1 month ago

Harper provides extended features using built-in components. They do not need to be installed with a package manager, and simply must be specified in a config to run. These are used throughout many Harper docs, guides, and examples. Unlike external components which have their own semantic versions, built-in components follow Harper's semantic version.

fastifyRoutes

Specify custom endpoints using .

This component is a and can be configured with the configuration options.

Complete documentation for this feature is available here:

fastifyRoutes:
  files: './routes/*.js'

graphql

GraphQL querying is experimental, and only partially implements the GraphQL Over HTTP / GraphQL specifications.

Enables GraphQL querying via a /graphql endpoint loosely implementing the GraphQL Over HTTP specification.

graphql: true

graphqlSchema

Specify schemas for Harper tables and resources via GraphQL schema syntax.

graphqlSchema:
  files: './schemas.graphql'

jsResource

Specify custom, JavaScript based Harper resources.

jsResource:
  files: './resource.js'

loadEnv

Load environment variables via files like .env.

Ensure this component is specified first in config.yaml so that environment variables are loaded prior to loading any other components.

loadEnv:
  files: '.env'

This component matches the default behavior of dotenv where existing variables take precedence. Specify the override option in order to override existing environment variables assigned to process.env:

loadEnv:
  files: '.env'
  override: true

Important: Harper is a single process application. Environment variables are loaded onto process.env and will be shared throughout all Harper components. This means environment variables loaded by one component will be available on other components (as long as the components are loaded in the correct order).

rest

Enable automatic REST endpoint generation for exported resources with this component.

rest: true

This component contains additional options:

To enable Last-Modified header support:

rest:
  lastModified: true

To disable automatic WebSocket support:

rest:
  webSocket: false

roles

Specify roles for Harper tables and resources.

roles:
  files: './roles.yaml'

static

static:
  files: './web/*'

Complete documentation for this feature is available here:

This component is a and can be configured with the configuration options.

Complete documentation for this feature is available here:

Refer to the Application guide, or reference documentation for more information on custom resources.

This component is a and can be configured with the configuration options.

This component is a and can be configured with the configuration options.

Complete documentation for this feature is available here:

This component is a and can be configured with the configuration options.

Complete documentation for this feature is available here:

Specify which files to server statically from the Harper HTTP endpoint. Built using the and modules.

This component is a and can be configured with the configuration options.

GraphQL
Defining Schemas
REST
Defining Roles
send
serve-static
Fastify
Define Fastify Routes
Built-In Components
fastifyRoutes
graphql
graphqlSchema
jsResource
loadEnv
rest
roles
static
Resource Class
Resource Extension
files, path, and root
Resource Extension
files, path, and root
Resource Extension
files, path, and root
Resource Extension
files, path, and root
Resource Extension
files, path, and root
Resource Extension
files, path, and root
Custom Functionality with JavaScript