From 3f028c7e2d7017a4caa88f3e341e775a87a47b82 Mon Sep 17 00:00:00 2001
From: Alexander Zobnin <alexanderzobnin@gmail.com>
Date: Tue, 29 Mar 2016 12:12:49 +0300
Subject: [PATCH] Added migrations module for target format converting.

---
 src/datasource-zabbix/datasource.js       |  3 ++
 src/datasource-zabbix/migrations.js       | 53 +++++++++++++++++++++++
 src/datasource-zabbix/query.controller.js |  3 ++
 3 files changed, 59 insertions(+)
 create mode 100644 src/datasource-zabbix/migrations.js

diff --git a/src/datasource-zabbix/datasource.js b/src/datasource-zabbix/datasource.js
index 8f9a088..6e8805d 100644
--- a/src/datasource-zabbix/datasource.js
+++ b/src/datasource-zabbix/datasource.js
@@ -2,6 +2,7 @@
 import _ from 'lodash';
 import * as dateMath from 'app/core/utils/datemath';
 import * as utils from './utils';
+import * as migrations from './migrations';
 import * as metricFunctions from './metricFunctions';
 import DataProcessor from './DataProcessor';
 import './zabbixAPI.service.js';
@@ -110,6 +111,8 @@ export class ZabbixAPIDatasource {
     var promises = _.map(options.targets, function(target) {
 
       if (target.mode !== 1) {
+        //console.log(migrations.isGrafana2target(target), target);
+        target = migrations.migrate(target);
 
         // Don't request undefined and hidden targets
         if (target.hide || !target.group ||
diff --git a/src/datasource-zabbix/migrations.js b/src/datasource-zabbix/migrations.js
new file mode 100644
index 0000000..3871782
--- /dev/null
+++ b/src/datasource-zabbix/migrations.js
@@ -0,0 +1,53 @@
+/**
+ * Query format migration.
+ * This module can detect query format version and make migration.
+ */
+
+import * as utils from './utils';
+
+export function isGrafana2target(target) {
+  if ((target.hostFilter || target.itemFilter || target.downsampleFunction ||  target.host.host) &&
+      (!target.functions && !target.host.filter)) {
+    return true;
+  } else {
+    return false;
+  }
+}
+
+export function migrateFrom2To3version(target) {
+  utils.isRegex(target.host.name);
+  var newTarget = {
+    group: {
+      filter: target.group.name === "*" ? "/.*/" : target.group.name,
+      isRegex: target.group.name === "*"
+    },
+    host: {
+      filter: target.host.name === "*" ? convertToRegex(target.hostFilter) : target.host.name,
+      isRegex: target.host.name === "*"
+    },
+    application: {
+      filter: target.application.name === "*" ? "" : target.application.name,
+      isRegex: target.application.name === "*"
+    },
+    item: {
+      filter: target.item.name === "All" ? convertToRegex(target.itemFilter) : target.item.name,
+      isRegex: target.item.name === "All"
+    },
+    functions: [],
+    mode: target.mode,
+    hide: target.hide,
+  };
+  return newTarget;
+}
+
+export function migrate(target) {
+  if (isGrafana2target(target)) {
+    return migrateFrom2To3version(target);
+  } else {
+    return target;
+  }
+}
+
+function convertToRegex(str) {
+  return '/' + str + '/';
+}
diff --git a/src/datasource-zabbix/query.controller.js b/src/datasource-zabbix/query.controller.js
index c2c2bd5..1a8a64b 100644
--- a/src/datasource-zabbix/query.controller.js
+++ b/src/datasource-zabbix/query.controller.js
@@ -2,6 +2,7 @@ import {QueryCtrl} from 'app/plugins/sdk';
 import _ from 'lodash';
 import * as utils from './utils';
 import * as metricFunctions from './metricFunctions';
+import * as migrations from './migrations';
 
 import './add-metric-function.directive';
 import './metric-function-editor.directive';
@@ -32,6 +33,8 @@ export class ZabbixQueryController extends QueryCtrl {
 
     this.init = function() {
 
+      this.target = migrations.migrate(this.target);
+
       this.templateSrv = templateSrv;
       var target = this.target;