[WIP] feat: standalone server

packages/dicomweb-serve/app.js

@@ -0,0 +1,41 @@
+var createError = require('http-errors');
+var express = require('express');
+var path = require('path');
+var cookieParser = require('cookie-parser');
+var logger = require('morgan');
+
+var indexRouter = require('./routes/index');
+var usersRouter = require('./routes/users');
+
+var app = express();
+
+// view engine setup
+app.set('views', path.join(__dirname, 'views'));
+app.set('view engine', 'jade');
+
+app.use(logger('dev'));
+app.use(express.json());
+app.use(express.urlencoded({ extended: false }));
+app.use(cookieParser());
+app.use(express.static(path.join(__dirname, 'public')));
+
+app.use('/', indexRouter);
+app.use('/users', usersRouter);
+
+// catch 404 and forward to error handler
+app.use(function(req, res, next) {
+  next(createError(404));
+});
+
+// error handler
+app.use(function(err, req, res, next) {
+  // set locals, only providing error in development
+  res.locals.message = err.message;
+  res.locals.error = req.app.get('env') === 'development' ? err : {};
+
+  // render the error page
+  res.status(err.status || 500);
+  res.render('error');
+});
+
+module.exports = app;

packages/dicomweb-serve/bin/www

@@ -0,0 +1,90 @@
+#!/usr/bin/env node
+
+/**
+ * Module dependencies.
+ */
+
+var app = require('../app');
+var debug = require('debug')('dicomweb-serve:server');
+var http = require('http');
+
+/**
+ * Get port from environment and store in Express.
+ */
+
+var port = normalizePort(process.env.PORT || '3000');
+app.set('port', port);
+
+/**
+ * Create HTTP server.
+ */
+
+var server = http.createServer(app);
+
+/**
+ * Listen on provided port, on all network interfaces.
+ */
+
+server.listen(port);
+server.on('error', onError);
+server.on('listening', onListening);
+
+/**
+ * Normalize a port into a number, string, or false.
+ */
+
+function normalizePort(val) {
+  var port = parseInt(val, 10);
+
+  if (isNaN(port)) {
+    // named pipe
+    return val;
+  }
+
+  if (port >= 0) {
+    // port number
+    return port;
+  }
+
+  return false;
+}
+
+/**
+ * Event listener for HTTP server "error" event.
+ */
+
+function onError(error) {
+  if (error.syscall !== 'listen') {
+    throw error;
+  }
+
+  var bind = typeof port === 'string'
+    ? 'Pipe ' + port
+    : 'Port ' + port;
+
+  // handle specific listen errors with friendly messages
+  switch (error.code) {
+    case 'EACCES':
+      console.error(bind + ' requires elevated privileges');
+      process.exit(1);
+      break;
+    case 'EADDRINUSE':
+      console.error(bind + ' is already in use');
+      process.exit(1);
+      break;
+    default:
+      throw error;
+  }
+}
+
+/**
+ * Event listener for HTTP server "listening" event.
+ */
+
+function onListening() {
+  var addr = server.address();
+  var bind = typeof addr === 'string'
+    ? 'pipe ' + addr
+    : 'port ' + addr.port;
+  debug('Listening on ' + bind);
+}

packages/dicomweb-serve/package.json

@@ -0,0 +1,16 @@
+{
+  "name": "dicomweb-serve",
+  "version": "0.0.0",
+  "private": true,
+  "scripts": {
+    "start": "node ./bin/www"
+  },
+  "dependencies": {
+    "cookie-parser": "~1.4.4",
+    "debug": "~2.6.9",
+    "express": "~4.16.1",
+    "http-errors": "~1.6.3",
+    "jade": "~1.11.0",
+    "morgan": "~1.9.1"
+  }
+}

packages/dicomweb-serve/public/stylesheets/style.css

@@ -0,0 +1,8 @@
+body {
+  padding: 50px;
+  font: 14px "Lucida Grande", Helvetica, Arial, sans-serif;
+}
+
+a {
+  color: #00B7FF;
+}

packages/dicomweb-serve/routes/index.js

@@ -0,0 +1,9 @@
+var express = require('express');
+var router = express.Router();
+
+/* GET home page. */
+router.get('/', function(req, res, next) {
+  res.render('index', { title: 'Express' });
+});
+
+module.exports = router;

packages/dicomweb-serve/routes/users.js

@@ -0,0 +1,9 @@
+var express = require('express');
+var router = express.Router();
+
+/* GET users listing. */
+router.get('/', function(req, res, next) {
+  res.send('respond with a resource');
+});
+
+module.exports = router;

packages/dicomweb-serve/views/error.jade

@@ -0,0 +1,6 @@
+extends layout
+
+block content
+  h1= message
+  h2= error.status
+  pre #{error.stack}

packages/dicomweb-serve/views/index.jade

@@ -0,0 +1,5 @@
+extends layout
+
+block content
+  h1= title
+  p Welcome to #{title}

packages/dicomweb-serve/views/layout.jade

@@ -0,0 +1,7 @@
+doctype html
+html
+  head
+    title= title
+    link(rel='stylesheet', href='/stylesheets/style.css')
+  body
+    block content

packages/static-cs-lite/lib/api/getRenderedBuffer.js

@@ -12,7 +12,12 @@ const canvasImageToBuffer = require("../adapters/canvasImageToBuffer");
  * @param {*} metadata
  * @param {*} doneCallback Callback method that is invoked once image is rendered
  */
-function getRenderedBuffer(transferSyntaxUid, decodedPixelData, metadata, doneCallback) {
+function getRenderedBuffer(
+  transferSyntaxUid,
+  decodedPixelData,
+  metadata,
+  doneCallback,
+) {
   const { csCore, canvas, context } = setUpEnv();
 
   function doneRendering(customEvent = {}) {
@@ -32,7 +37,12 @@ function getRenderedBuffer(transferSyntaxUid, decodedPixelData, metadata, doneCa
   }
 
   try {
-    const imageObj = createImage(transferSyntaxUid, decodedPixelData, metadata, canvas);
+    const imageObj = createImage(
+      transferSyntaxUid,
+      decodedPixelData,
+      metadata,
+      canvas,
+    );
 
     canvas.addEventListener(csCore.EVENTS.IMAGE_RENDERED, doneRendering);
     csCore.renderToCanvas(canvas, imageObj);

packages/static-cs-lite/lib/api/renderToCanvas.js

@@ -25,7 +25,13 @@ function setContextStyles(ctx, styles, styleKeys) {
     }
   });
 }
-function renderTextToCanvas(canvas, text, pos, size, styles = { textStyle: DEFAULT_STYLES.textStyle }) {
+function renderTextToCanvas(
+  canvas,
+  text,
+  pos,
+  size,
+  styles = { textStyle: DEFAULT_STYLES.textStyle },
+) {
   const [x, y] = pos;
   const ctx = canvas.getContext("2d");
   setContextStyles(ctx, styles, ["textStyle"]);
@@ -39,7 +45,12 @@ function renderTextToCanvas(canvas, text, pos, size, styles = { textStyle: DEFAU
   };
 }
 
-function renderLinesToCanvas(canvas, points, size, styles = { lineStyle: DEFAULT_STYLES.lineStyle }) {
+function renderLinesToCanvas(
+  canvas,
+  points,
+  size,
+  styles = { lineStyle: DEFAULT_STYLES.lineStyle },
+) {
   const ctx = canvas.getContext("2d");
 
   if (!points.length || !ctx) {
@@ -60,7 +71,12 @@ function renderLinesToCanvas(canvas, points, size, styles = { lineStyle: DEFAULT
   ctx.stroke();
 }
 
-function renderPointToCanvas(canvas, point, size, styles = { pointSyle: DEFAULT_STYLES.pointStyle }) {
+function renderPointToCanvas(
+  canvas,
+  point,
+  size,
+  styles = { pointSyle: DEFAULT_STYLES.pointStyle },
+) {
   const ctx = canvas.getContext("2d");
 
   if (!point || !ctx) {
@@ -75,7 +91,13 @@ function renderPointToCanvas(canvas, point, size, styles = { pointSyle: DEFAULT_
   ctx.fill();
 }
 
-function renderHLineToCanvas(canvas, position, width, height, styles = { lineStyle: DEFAULT_STYLES.lineStyle }) {
+function renderHLineToCanvas(
+  canvas,
+  position,
+  width,
+  height,
+  styles = { lineStyle: DEFAULT_STYLES.lineStyle },
+) {
   const points = [
     [position[0], position[1]],
     [position[0] + width, position[1]],
@@ -127,7 +149,7 @@ function renderPointsToCanvas(
   styles = {
     lineStyle: DEFAULT_STYLES.lineStyle,
     pointStyle: DEFAULT_STYLES.pointStyle,
-  }
+  },
 ) {
   points.forEach((point, index) => {
     const useStyles = { ...styles };
@@ -158,13 +180,31 @@ function renderContentToCanvas(enabledElement, content, styles) {
   let result;
   switch (content.type) {
     case "text":
-      result = renderTextToCanvas(enabledElement.canvas, content.text, content.position, content.size, styles);
+      result = renderTextToCanvas(
+        enabledElement.canvas,
+        content.text,
+        content.position,
+        content.size,
+        styles,
+      );
       break;
     case "hLine":
-      result = renderHLineToCanvas(enabledElement.canvas, content.position, content.width, content.height * content.size, styles);
+      result = renderHLineToCanvas(
+        enabledElement.canvas,
+        content.position,
+        content.width,
+        content.height * content.size,
+        styles,
+      );
       break;
     case "points":
-      result = renderPointsToCanvas(enabledElement.canvas, content.points, content.strategy, content.size, styles);
+      result = renderPointsToCanvas(
+        enabledElement.canvas,
+        content.points,
+        content.strategy,
+        content.size,
+        styles,
+      );
       break;
     default:
       throw new Error(`Unknown type ${content.type} in ${content}`);