made goldilocks reload config on SIGHUP

bin/goldilocks.js

@@ -41,15 +41,12 @@ function createStorage(filename, filetype) {
   }
 
   function read() {
-    return fs.readFileAsync(filename)
+    return fs.readFileAsync(filename).then(parse).catch(function (err) {
-      .catch(function (err) {
+      if (err.code === 'ENOENT') {
-        if (err.code === 'ENOENT') {
+        return '';
-          return '';
+      }
-        }
+      return PromiseA.reject(err);
-        return PromiseA.reject(err);
+    });
-      })
-      .then(parse)
-      ;
   }
 
   var result = {
@@ -253,25 +250,29 @@ function run(args) {
   var workers = {};
   var cachedConfig;
 
+  function updateConfig(config) {
+    fillConfig(config, args).then(function (config) {
+      cachedConfig = config;
+      console.log('changed config', config);
+      Object.keys(workers).forEach(function (key) {
+        workers[key].send(cachedConfig);
+      });
+    });
+  }
+
+  process.on('SIGHUP', function () {
+    configStorage.read().then(updateConfig).catch(function (err) {
+      console.error('error updating config after SIGHUP', err);
+    });
+  });
+
   cluster.on('message', function (worker, message) {
     if (message.type !== 'com.daplie.goldilocks/config') {
       return;
     }
-    configStorage.save(message.changes)
+    configStorage.save(message.changes).then(updateConfig).catch(function (err) {
-      .then(function (config) {
+      console.error('error changing config', err);
-        return fillConfig(config, args);
+    });
-      })
-      .then(function (config) {
-        cachedConfig = config;
-        console.log('changed config', config);
-        Object.keys(workers).forEach(function (key) {
-          workers[key].send(cachedConfig);
-        });
-      })
-      .catch(function (err) {
-        console.error('error changing config', err);
-      })
-      ;
   });
 
   cluster.on('online', function (worker) {