improve worker logging and move blob deletion to worker processes as well

lib/historyKeeper.js

@@ -10,6 +10,7 @@ const Core = require("./commands/core");
 
 const Store = require("./storage/file");
 const BlobStore = require("./storage/blob");
+const Workers = require("./workers/index");
 
 module.exports.create = function (config, cb) {
     const Log = config.log;
@@ -78,8 +79,6 @@ module.exports.create = function (config, cb) {
         domain: config.domain
     };
 
-    HK.initializeValidationWorkers(Env);
-
     (function () {
         var pes = config.premiumUploadSize;
         if (!isNaN(pes) && pes >= Env.maxUploadSize) {
@@ -243,7 +242,7 @@ module.exports.create = function (config, cb) {
             Env.blobStore = blob;
         }));
     }).nThen(function (w) {
-        HK.initializeIndexWorkers(Env, {
+        Workers.initialize(Env, {
             blobPath: config.blobPath,
             blobStagingPath: config.blobStagingPath,
             pinPath: pinPath,
@@ -268,6 +267,7 @@ module.exports.create = function (config, cb) {
             if (config.disableIntegratedTasks) { return; }
 
             config.intervals = config.intervals || {};
+            // XXX
             config.intervals.taskExpiration = setInterval(function () {
                 tasks.runAll(function (err) {
                     if (err) {