npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

@bluehalo/fhir-response-util

v1.3.0

Published

Utility for handling the headers, content, and status types for a response.

Downloads

168

Readme

FHIR Response Utility

Utility for handling the headers, content, and status types for a response

Install

yarn add @bluehalo/fhir-response-util

Usage

The response utility exposes the following methods which can be used to for different scenarios and different types of responses. They all make certain assumptions about the arguments they receive which are documented below in the arguments section.

This is designed to be used in node-fhir-server-core and similar FHIR servers. There is some pseudocode with each method's description to give an idea of how this might work. If you read the source code for resource controllers in node-fhir-server-core, you can see how we are using this internally.

read

Used when you are returning a Bundle of resources

This will set the correct Content-Type and status code while sending the json back to the client.

const handler = require('@bluehalo/fhir-response-util');

// Some controller
function getPatientsController(req, res, next) {
  // The user may have some service to fetch results
  service
    .getPatients(req)
    .then((bundle) => {
      // Assuming bundle contains a bunch of patients
      handler.read(req, res, bundle);
    })
    .catch((err) => {
      next(err);
    });
}

readOne

Used when you are returning a single resource of any type.

This will set the correct Content-Type and status code while sending the json back to the client.

const handler = require('@bluehalo/fhir-response-util');

// Some controller
function getPatientController(req, res, next) {
  // The user may have some service to fetch results
  service
    .getPatient(req)
    .then((patient) => {
      handler.readOne(req, res, patient);
    })
    .catch((err) => {
      next(err);
    });
}

create

Used when you are creating a single resource of any type.

This will set the correct Content-Location, Location, and ETag headers. As well as set the correct status code.

const handler = require('@bluehalo/fhir-response-util');

// Some controller
function createPatientController(req, res, next) {
  // The user may have some service to fetch results
  service
    .create(req)
    .then((patient) => {
      let json = { id: patient.id, resource_version: patient.meta.versionId };
      let options = { type: 'Patient' };

      handler.create(req, res, json, options);
    })
    .catch((err) => {
      next(err);
    });
}

update

Used when you are updating a single resource of any type

This will set the correct Content-Location, Last-Modified, Location, and ETag headers. As well as set the correct Content-Type and status code.

const handler = require('@bluehalo/fhir-response-util');

// Some controller
function updatePatientController(req, res, next) {
  // The user may have some service to fetch results
  service
    .update(req)
    .then((patient) => {
      let json = { id: patient.id, resource_version: patient.meta.versionId, created: false };
      let options = { type: 'Patient' };

      handler.update(req, res, json, options);
    })
    .catch((err) => {
      next(err);
    });
}

remove

Used when you are deleting a single resource of any type

This will set the correct ETag header and status code.

const handler = require('@bluehalo/fhir-response-util');

// Some controller
function removePatientController(req, res, next) {
  // The user may have some service to fetch results
  service
    .remove(req)
    .then((id) => {
      let json = { deleted: id };

      handler.remove(req, res, json);
    })
    .catch((err) => {
      next(err);
    });
}

history

Used when you are querying the history of a resource of any type

This will set the correct Content-Type and status code while sending the json back to the client.

const handler = require('@bluehalo/fhir-response-util');

// Some controller
function getPatientHistoryController(req, res, next) {
  // The user may have some service to fetch results
  service
    .history(req)
    .then((bundle) => {
      handler.history(req, res, bundle);
    })
    .catch((err) => {
      next(err);
    });
}

Arguments

req and res that you see in each method are from express. res is just a normal response, but request must have a base_version parameter(req.params.base_version). Specifically, it should be one of the valid versions we support in our server, which are '1_0_2', '3_0_1', and '4_0_0'. If you would like us to add more versions for this, just let us know, we use this to determine the correct content-type as well as the url of the resource for the response type and response headers.

read

handler.read(req, res, json);

req

Express request.

Type: Express.req
Required: true

res

Express response.

Type: Express.req
Required: true

json

Bundle FHIR resource.

Type: Object
Required: true

readOne

handler.readOne(req, res, json);

req

Express request.

Type: Express.req
Required: true

res

Express response.

Type: Express.req
Required: true

json

Individual FHIR resource.

Type: Object
Required: true

create

handler.create(req, res, json, options);

req

Express request.

Type: Express.req
Required: true

res

Express response.

Type: Express.req
Required: true

json

Properties from the results. Must have an id

Type: Object
Required: true

json.id

ID of the FHIR resource that was created.

Type: String
Required: true

json.resource_version

If we are using history, which version of the resource did we create.

Type: String
Required: false

options

Additional options needed to set the correct headers in the response.

Type: Object
Required: true

options.type

This helps us set the content-location and location headers. For example, handler.create(req, res, json, { type: 'Patient' }) would allow us to set a header like this, res.set('Location', '4_0_0/Patient/patient-identifier').

Type: 'String'
Required: 'true'

update

handler.update(req, res, json, options);

req

Express request.

Type: Express.req
Required: true

res

Express response.

Type: Express.req
Required: true

json

Properties from the results. Must have an id

Type: Object
Required: true

json.id

ID of the FHIR resource that was created.

Type: String
Required: true

json.resource_version

If we are using history, which version of the resource did we create.

Type: String
Required: false

json.created

Did we create a resource or not. If we created a resource, we need to know so that we can set a res.status of 201, otherwise, we will default to a status of 200.

Type: Boolean
Required: false

options

Additional options needed to set the correct headers in the response.

Type: Object
Required: true

options.type

This helps us set the content-location and location headers. For example, handler.create(req, res, json, { type: 'Patient' }) would allow us to set a header like this, res.set('Location', '4_0_0/Patient/patient-identifier').

Type: 'String'
Required: 'true'

remove

handler.remove(req, res, json);

req

Express request.

Type: Express.req
Required: true

res

Express response.

Type: Express.req
Required: true

json

JSON for the response. Not required but contains the optional deleted property.

Type: Object
Required: false

json.deleted

The deleted property should be the id of the element deleted. For example, handler.remove(req, res, { deleted: 'qwerty-123' }). This allows us to add the identifier as a ETag in the response header.

Type: Object
Required: false

history

handler.history(req, res, json);

req

Express request.

Type: Express.req
Required: true

res

Express response.

Type: Express.req
Required: true

json

Bundle FHIR resource.

Type: Object
Required: true