Fixed migration issues.

src/datasource-zabbix/datasource.js

@@ -111,7 +111,8 @@ export class ZabbixAPIDatasource {
     var promises = _.map(options.targets, function(target) {
 
       if (target.mode !== 1) {
-        //console.log(migrations.isGrafana2target(target), target);
+
+        // Migrate old targets
         target = migrations.migrate(target);
 
         // Don't request undefined and hidden targets

src/datasource-zabbix/migrations.js

@@ -3,41 +3,31 @@
  * This module can detect query format version and make migration.
  */
 
-import * as utils from './utils';
-
 export function isGrafana2target(target) {
+  if (!target.mode || target.mode === 0) {
     if ((target.hostFilter || target.itemFilter || target.downsampleFunction ||  target.host.host) &&
-      (!target.functions && !target.host.filter)) {
+        (target.item.filter === undefined && target.host.filter === undefined)) {
       return true;
     } else {
       return false;
     }
+  } 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;
+  target.group.filter = target.group.name === "*" ? "/.*/" : target.group.name;
+  target.group.isRegex = target.group.name === "*";
+  target.host.filter = target.host.name === "*" ? convertToRegex(target.hostFilter) : target.host.name;
+  target.host.isRegex = target.host.name === "*";
+  target.application.filter = target.application.name === "*" ? "" : target.application.name;
+  target.application.isRegex = target.application.name === "*";
+  target.item.filter = target.item.name === "All" ? convertToRegex(target.itemFilter) : target.item.name;
+  target.item.isRegex = target.item.name === "All";
+  target.functions = [];
+  target.refId = target.refId ? target.refId : "A";
+  return target;
 }
 
 export function migrate(target) {

src/datasource-zabbix/query.controller.js

@@ -33,11 +33,12 @@ export class ZabbixQueryController extends QueryCtrl {
 
     this.init = function() {
 
-      this.target = migrations.migrate(this.target);
-
       this.templateSrv = templateSrv;
       var target = this.target;
 
+      // Migrate old targets
+      target = migrations.migrate(target);
+
       var scopeDefaults = {
         metric: {},
         oldTarget: _.cloneDeep(this.target)
@@ -69,11 +70,6 @@ export class ZabbixQueryController extends QueryCtrl {
           {name: "max", value: "max"}
         ];
 
-        // Set avg by default
-        if (!target.downsampleFunction) {
-          target.downsampleFunction = this.downsampleFunctionList[0];
-        }
-
         this.initFilters();
       }
       else if (target.mode === 1) {