first commit

importers/exchanges/btcc.js

@@ -0,0 +1,89 @@
+var BTCChina = require('btc-china-fork');
+var util = require('../../core/util.js');
+var _ = require('lodash');
+var moment = require('moment');
+var log = require('../../core/log');
+
+var config = util.getConfig();
+
+var dirs = util.dirs();
+
+var Fetcher = require(dirs.exchanges + 'btcc');
+
+// patch getTrades..
+Fetcher.prototype.getTrades = function(fromTid, sinceTime, callback) {
+  var args = _.toArray(arguments);
+  var process = function(err, result) {
+    if(err)
+      return this.retry(this.getTrades, args);
+
+    callback(result);
+  }.bind(this);
+
+  if(sinceTime)
+    var params = {
+      limit: 1,
+      sincetype: 'time',
+      since: sinceTime
+    }
+
+  else if(fromTid)
+    var params = {
+      limit: 5000,
+      since: fromTid
+    }
+
+  this.btcc.getHistoryData(process, params);
+}
+
+util.makeEventEmitter(Fetcher);
+
+var iterator = false;
+var end = false;
+var done = false;
+var from = false;
+
+var fetcher = new Fetcher(config.watch);
+
+var fetch = () => {
+  if(!iterator)
+    fetcher.getTrades(false, from, handleFirstFetch);
+  else
+    fetcher.getTrades(iterator, false, handleFetch);
+}
+
+// we use the first fetch to figure out 
+// the tid of the moment we want data from
+var handleFirstFetch = trades => {
+  iterator = _.first(trades).tid;
+  fetch();
+}
+
+var handleFetch = trades => {
+
+  iterator = _.last(trades).tid;
+  var last = moment.unix(_.last(trades).date);
+
+  if(last > end) {
+    fetcher.emit('done');
+
+    var endUnix = end.unix();
+    trades = _.filter(
+      trades,
+      t => t.date <= endUnix
+    );
+  }
+
+  fetcher.emit('trades', trades);
+}
+
+module.exports = function (daterange) {
+  from = daterange.from.unix();
+  end = daterange.to.clone();
+
+  return {
+    bus: fetcher,
+    fetch: fetch
+  }
+}
+