From 803148d5a23afe207fb5de9ac73c986a324feb9c Mon Sep 17 00:00:00 2001
From: Trygve Laugstøl <trygvis@inamo.no>
Date: Sat, 31 Oct 2015 14:09:39 +0100
Subject: core: o Improved transaction handling. web: o Supporting changing a
 device's name and description.

---
 src/DillerTx.js | 63 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 src/DillerTx.js

(limited to 'src/DillerTx.js')

diff --git a/src/DillerTx.js b/src/DillerTx.js
new file mode 100644
index 0000000..85daee5
--- /dev/null
+++ b/src/DillerTx.js
@@ -0,0 +1,63 @@
+var di = require('di');
+var _ = require('lodash');
+var DillerConfig = require('./DillerConfig');
+var DillerDao = require('./DillerDao');
+var Diller = require('./Diller');
+
+var pgpConstructor = require('pg-promise');
+
+var pgp;
+
+/**
+ * @param config DillerConfig
+ * @returns {Function}
+ * @constructor
+ */
+function DillerTx(config) {
+  var log = config.log();
+
+  function queryLogger(e) {
+    log.info("Query:", e.query);
+    if (e.ctx) {
+      // this query is executing inside a task or transaction,
+      if (e.ctx.isTX) {
+        // this query is inside a transaction;
+      } else {
+        // this query is inside a task;
+      }
+
+    }
+  }
+
+  function connectLogger(client) {
+    log.info('PGP: connect');
+  }
+
+  function disconnectLogger(client) {
+    log.info('PGP: disconnect');
+  }
+
+  if (!pgp) {
+    var pgpOptions = {};
+
+    pgpOptions.query = (config.logQueries && queryLogger) || undefined;
+    //pgpOptions.connect = (config.logQueries && connectLogger) || undefined;
+    //pgpOptions.disconnect = (config.logQueries && disconnectLogger) || undefined;
+
+    pgp = pgpConstructor(pgpOptions);
+  }
+
+  return function (action) {
+    var con = pgp(config.postgresqlConfig);
+
+    return con.tx(function (pg) {
+      var dao = new DillerDao(con);
+      var diller = new Diller(config, con, dao);
+      return action(pg, dao, diller)
+    });
+  };
+}
+
+di.annotate(DillerTx, new di.Inject(DillerConfig));
+
+module.exports = DillerTx;
-- 
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