Prototype

.eslintrc

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+{
+  "extends": ["standard"]
+}

.gitignore

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+# Logs
+logs
+*.log
+
+# Runtime data
+pids
+*.pid
+*.seed
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (http://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directory
+# https://www.npmjs.org/doc/misc/npm-faq.html#should-i-check-my-node_modules-folder-into-git
+node_modules
+
+lib/

bin/cli.js

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+#!/usr/bin/env node
+
+var path = require('path')
+
+require(path.join(process.cwd(), 'frockfile.js'))

package.json

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+{
+  "name": "frock",
+  "version": "0.0.0",
+  "description": "A configurable mock HTTP server",
+  "main": "lib/index.js",
+  "bin": {
+    "frock": "./bin/cli.js"
+  },
+  "scripts": {
+    "test": "npm run lint && npm run compile && babel test/index.js | tape",
+    "prepublish": "npm run compile",
+    "compile": "babel src --out-dir lib",
+    "lint": "standard src/**/*.js test/**/*.js"
+  },
+  "author": "Urban Airship",
+  "license": "Apache-2.0",
+  "devDependencies": {
+    "babel": "^5.6.14",
+    "eslint": "^1.1.0",
+    "eslint-config-standard": "^4.1.0",
+    "eslint-config-standard-react": "^1.0.4",
+    "eslint-plugin-react": "^3.2.2",
+    "eslint-plugin-standard": "^1.2.0",
+    "standard": "^5.1.0",
+    "tape": "^4.0.0"
+  },
+  "dependencies": {
+    "arrify": "^1.0.0",
+    "commuter": "^1.0.2"
+  }
+}

src/index.js

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+import http from 'http'
+
+import commuter from 'commuter'
+import arrayify from 'arrify'
+
+export default createFrockInstance
+
+function createFrockInstance (config = {}) {
+  const frock = {}
+  const handlers = new Map()
+  const servers = []
+
+  frock.run = run
+  frock.stop = stop
+  frock.reload = reload
+  frock.registerHandler = registerHandler
+
+  return frock
+
+  function run (ready = noop) {
+    let count = 0
+
+    config.servers.forEach(s => {
+      const router = commuter(defaultRoute, s.baseUrl)
+      const server = http.createServer(router)
+      const boundHandlers = []
+
+      s.routes.forEach(r => {
+        const methods = arrayify(r.methods).map(m => m.toLowerCase())
+
+        methods.forEach(m => {
+          const handler = handlers.get(r.handler)(
+            frock,
+            logger.bind(null, r.handler),
+            r.options
+          )
+
+          router[m](r.path, handler)
+          boundHandlers.push(handler)
+        })
+      })
+
+      servers.push({server, handlers: boundHandlers})
+      server.listen(s.port, done)
+    })
+
+    function done () {
+      ++count
+
+      if (count >= config.servers.length) {
+        ready()
+      }
+    }
+  }
+
+  function registerHandler (name, handler) {
+    handlers.set(name, handler)
+  }
+
+  function reload (ready = noop) {
+    stop(() => run(ready))
+  }
+
+  function stop (ready = noop) {
+    servers.forEach(s => {
+      s.handlers.forEach(h => {
+        h.end(innerDone)
+      })
+
+      function innerDone (handler) {
+        const idx = s.handlers.indexOf(handler)
+
+        if (idx) {
+          s.handlers.splice(idx, 1)
+        } else {
+          throw new Error('No handler to remove, throwing to avoid infinite loop')
+        }
+
+        if (!s.handlers.length) {
+          s.server.close(() => done(s))
+        }
+      }
+    })
+
+    function done (server) {
+      const idx = servers.indexOf(server)
+
+      if (idx) {
+        servers.splice(idx, 1)
+      } else {
+        throw new Error('No server to remove, throwing to avoid infinite loop')
+      }
+
+      if (!servers.length) {
+        ready()
+      }
+    }
+  }
+}
+
+function defaultRoute (req, res) {
+  res.statusCode = 404
+  res.end('not found')
+}
+
+function logger (handler, level, msg, extra) {
+  console.log(`${handler}: [${level.toUpperCase()}] ${msg}`)
+}
+
+function noop () {
+  // nooperations
+}