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authorroot <root@filebitch>2011-08-28 18:28:51 +0200
committerroot <root@filebitch>2011-08-28 18:28:51 +0200
commitfe1a8c2eb90fecabada32a15572e019a7da8fdd9 (patch)
treea4f5e63eb41b0143c60ad5d2fab7afec363e06ba /gold/scex/tracer/index.js
parent99bdbc04f2be1f0d27c4a4dde692e8a5b6eb8a7e (diff)
parent7bf33493aa27a4462841eb8aa42eda5b974010b7 (diff)
Merge branch 'master' of https://github.com/krebscode/painload
Diffstat (limited to 'gold/scex/tracer/index.js')
-rw-r--r--gold/scex/tracer/index.js89
1 files changed, 89 insertions, 0 deletions
diff --git a/gold/scex/tracer/index.js b/gold/scex/tracer/index.js
new file mode 100644
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--- /dev/null
+++ b/gold/scex/tracer/index.js
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+#! /usr/bin/env node
+//
+// usage: [idle_mark=N] tracer
+//
+// Where the optional idle_mark tells the tracer to output idle marks every N
+// seconds.
+//
+var http = require('http');
+var slurp = require('./slurp');
+
+var options = {
+ host: 'scexchange.bitparking.com',
+ port: 8080,
+ path: '/api/t2'
+};
+
+var interval = 1000;
+var idle_mark = Number(process.env.idle_mark) * interval;
+
+var last_id = 0;
+var last_price = 0;
+var last_output = new Date(0);
+function t2 () {
+ var now = new Date()
+ http.get(options, function(res) {
+ slurp(res, function (data) {
+ try {
+ data = JSON.parse(data);
+ } catch (exn) {
+ return console.error('' + exn.stack + '');
+ };
+ data = data.sort(function (a, b) {
+ return a.id - b.id;
+ }).filter(function (x) {
+ return x.id > last_id;
+ });
+ if (data.length > 0) {
+ data.forEach(function (x) {
+ last_id = x.id;
+
+ x.date = new Date(Number(x.date) * 1000);
+
+ var price = render_price(x.price, last_price);
+ last_price = x.price;
+
+ var c = ({ buy: '', sell: '' })[x.type];
+ var m = '';
+ m += x.id
+ m += ' ' + JSON.parse(JSON.stringify(x.date))
+ m += ' ' + price
+ m += ' ' + c + x.amount + ''
+ console.log(m);
+ last_output = now;
+ });
+ } else {
+ if (idle_mark) {
+ if (now - last_output >= idle_mark) {
+ var price = render_price(last_price);
+ var m = last_id
+ m += ' ' + JSON.parse(JSON.stringify(now));
+ m += ' ' + price
+ console.log(m);
+ last_output = now;
+ };
+ };
+ };
+ });
+ }).on('error', function(e) {
+ console.log("Got error: " + e.message);
+ });
+};
+
+function render_price(price, last_price) {
+ var rendered_price = price.toString();
+ while (rendered_price.length < 'x.xxxxxxxx'.length) {
+ rendered_price += 0;
+ };
+ if (last_price) {
+ if (price > last_price) {
+ rendered_price = '' + rendered_price + ''
+ };
+ if (price < last_price) {
+ rendered_price = '' + rendered_price + ''
+ };
+ };
+ return rendered_price;
+};
+
+setInterval(t2, interval);