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campsi

v5.14.5

Published

Configurable API for managing and publishing document-oriented content

Downloads

456

Readme

campsi/api

Greenkeeper badge Build Status

Manage and expose document-oriented content through a configurable RESTful API.

Features

API

  • [x] Store and manage both collections or individual documents
  • [x] Describe complex data structures, using campsi components
  • [x] State-based document lifecycle for approval workflows
  • [x] POST, PUT and DELETE asynchronous webhooks for distributed architecture
  • [x] Truly Stateless
  • [ ] Patch updates
  • [ ] Conflicts resolver

Querying

  • [x] Embed related documents ?embed=shippingAddresses
  • [x] Complex filtering ?data.name=Thomas&data.address.city=London
  • [x] Complex sorting ?sort=name,-birthday
  • [x] Pagination ?page=4&perPage=20
  • [ ] Stored searches

Authentication & authorization

  • [x] Role-Based Access-Control
  • [x] Generate invitation tokens by role
  • [x] PassportJS integration
  • [x] Custom authentification providers
  • [ ] Rate limiter

Other

  • [ ] Swagger / API doc generation
  • [ ] Generate random mock data

Assets Management

  • [X] Stream based upload system
  • [X] Filtered and paginated GET route
  • [X] Custom storage adapters
  • [ ] GraphicsMagick Metadata recognition
  • [ ] Resize and convert media derivatives

Concepts

States & role permissions

States represent the different stages in a document lifecycle, like published, draft and archived. To each state is associated specific role-based permissions, defining allowed HTTP methods :

| Method | Possible actions on the state | |:---------|:---------------------------------------------------------------------------- | | GET | view and query the documents | | POST | create a new document | | PUT | edit an existing document or put a document in this state | | DELETE | delete the state for the document |

A document can be in different states at the same time, for example:

  1. the published version, visible on the website and the mobile app by everyone
  2. the waiting_for_approval version that has to be validated by an admin
  3. the new draft version an editor is already working on.

A document can migrate from a state to another, for example:

  • You create a resource ticket for your customers error reporting.
  • customer role is allowed to POST /docs/tickets in the default state submitted
  • support role is allowed to PUT /docs/tickets in the states replied or read

You can create any number of states:

  • published
  • draft
  • waiting_for_approval
  • approved
  • rejected
  • populationA
  • populationB
  • submitted
  • read
  • replied

You can create any number of roles:

  • admin
  • editor
  • manager
  • customer
  • user
  • public
  • visitor

Resource

The resource is the document template, it describes the fields and validation rules.

Document

A document is an instance of a resource. It has an id and a value for each defined state, which is encapsulated in a property named data.

Anatomy of a document

let doc = {
	id: new ObjectId("58205e4fa5dc6c3b381a0e9b"),
    states: {
    	published: {
        	createdAt: "2016-11-07 10:58:23.950Z",
            createdBy: "58277c406d6157a751399052",
            data: {
            	title: "Hello World",
                content: "I'm the published version"
            }
        },
    	draft: {
        	createdAt: "2016-11-07 11:22:12.950Z",
            createdBy: "58277c406d6157a751399052",
            data: {
            	title: "Hello World",
                content: "I'm the draft version"
            }
        },
    }
}

Relationships & document embedding

Relationships between resources are resolved:

  • automatically, if the relationship has the property embed set to true
  • on demand, if a embed={rel} parameter is passed in the query string

Because there are no JOIN in MongoDB, embedding documents requires the execution of supplementary queries. For performance reason, the results are memoized during the request lifetime.

Webhook

You can configure webhooks that are triggered when an request processed by campsi/api match a specific scope (action, state, resource). Once triggered, the webhook send an asynchronous HTTP request to the endpoint uri specified in its configuration.

todo distributed architecture example

Usage

First, start Redis and MongoDB containers by running:

docker compose up -d

To stop the containers, run:

docker compose down

To restart the containers, run:

docker compose restart

Once the containers are running, you can start the server by running:

npm run test

Flags

--schema     "path/to/the/schema.json"  # specifies the json schema to use
--port       3000                       # set the HTTP port to listen to
--data       "/mnt/nfs/data"            # repository for upload

campsi/schema specification

Root

| Property | Type | Description | |:--------------|:-----------------|:------------------------------| | name | String | unique identifier of your api | | title | String | title of the API | | description | String | markdown description | | roles | <Role> | roles hashmap | | types | <ResourceType> | resource types hashmap | | resources | <Resource> | resources hasmap |

Role

| Property | Type | Description | |:---------|:----------|:------------------------------| | label | String | unique identifier of your api | | auth | Boolean | title of the API | | admin | Boolean | markdown descripition |

ResourceType

| Property | Type | Description | |:---------------|:--------------------------|:----------------------------------------------| | defaultState | String | name of the state any request will default to | | states | <State> | hashmap of the states | | permissions | <Role, <State, Method>> | Allowed HTTP methods by role and by state |

State

| Property | type | Description | |:-----------|:----------|:---------------------------------------------------| | name | String | name of the state any request will default to | | label | String | hashmap of the states | | validate | Boolean | wether the data has to be valid to be saved or not |

Resource

| Property | type | Description | |:--------------|:-----------|:---------------------------------------| | title | String | readable title | | description | String | markdown description | | type | String | name of the ResourceType | | fields | [Object] | list of the fields composing the model | | hooks | [Hook] | list of hooks bound to the resource | | rels | <Rel> | hashmap of relationships |

Rel

| Property | type | Description | |:-----------|:-----------|:---------------------------------------------------------| | path | String | property path | | resource | String | name of the resource it points to (self reference is OK) | | embed | Boolean | resolve relation automatically | | fields | [String] | list of the fields that gets embedded |

Hook

| Property | type | Description | |:----------|:------------------|:-----------------------------------------------------------| | name | String | hook identifier | | uri | String | todo support parameter | | method | String | one of POST GET PUT DELETE | | payload | Boolean | if true and method is POST or PUT, send the data | | on | [String] | list of actions | | states | [String] | list of states | | retry | Number | number of time the HTTP client tries to reach the endpoint | | timeout | Number | number of seconds before the HTTP client hangs up | | headers | <String,String> | hashmap of the request headers |

Requirements

  • NodeJS v16.0.0
  • MongoDB v2.6.0
  • Optional
    • ImageMagick
    • Graphics Magick