load user pins in the database worker

lib/workers/compute-index.js

@@ -6,19 +6,37 @@ const Store = require("../storage/file");
 const Util = require("../common-util");
 const nThen = require("nthen");
 const Meta = require("../metadata");
+const Pins = require("../pins");
 
 const Env = {};
 
 var ready = false;
 var store;
-const init = function (config, cb) {
+var pinStore;
+const init = function (config, _cb) {
+    const cb = Util.once(Util.mkAsync(_cb));
     if (!config) {
         return void cb('E_INVALID_CONFIG');
     }
 
-    Store.create(config, function (err, _store) {
-        if (err) { return void cb(err); }
-        store = _store;
+    nThen(function (w) {
+        Store.create(config, w(function (err, _store) {
+            if (err) {
+                w.abort();
+                return void cb(err);
+            }
+            store = _store;
+        }));
+        Store.create({
+            filePath: config.pinPath,
+        }, w(function (err, _pinStore) {
+            if (err) {
+                w.abort();
+                return void cb(err);
+            }
+            pinStore = _pinStore;
+        }));
+    }).nThen(function () {
         cb();
     });
 };
@@ -187,10 +205,24 @@ const getOlderHistory = function (data, cb) {
     });
 };
 
+const getPinState = function (data, cb, errorHandler) {
+    const safeKey = data.key;
+
+    var ref = {};
+    var lineHandler = Pins.createLineHandler(ref, errorHandler);
+
+    // if channels aren't in memory. load them from disk
+    // TODO replace with readMessagesBin
+    pinStore.getMessages(safeKey, lineHandler, function () {
+        cb(void 0, ref.pins); // FIXME no error handling?
+    });
+};
+
 const COMMANDS = {
     COMPUTE_INDEX: computeIndex,
     COMPUTE_METADATA: computeMetadata,
     GET_OLDER_HISTORY: getOlderHistory,
+    GET_PIN_STATE: getPinState,
 };
 
 process.on('message', function (data) {
@@ -201,13 +233,8 @@ process.on('message', function (data) {
     }
 
     const cb = function (err, value) {
-        if (err) {
-            return void process.send({
-                txid: data.txid,
-                error: err,
-            });
-        }
         process.send({
+            error: err,
             txid: data.txid,
             value: value,
         });