autodetect zabbix version

src/datasource-zabbix/datasource.js

@@ -9,6 +9,8 @@ import responseHandler from './responseHandler';
 import { Zabbix } from './zabbix/zabbix';
 import { ZabbixAPIError } from './zabbix/connectors/zabbix_api/zabbixAPICore';
 
+const DEFAULT_ZABBIX_VERSION = 3;
+
 export class ZabbixDatasource {
 
   /** @ngInject */
@@ -47,6 +49,7 @@ export class ZabbixDatasource {
 
     // Other options
     this.disableReadOnlyUsersAck = jsonData.disableReadOnlyUsersAck;
+    this.zabbixVersion = jsonData.zabbixVersion || DEFAULT_ZABBIX_VERSION;
 
     // Direct DB Connection options
     this.enableDirectDBConnection = jsonData.dbConnectionEnable || false;
@@ -59,6 +62,7 @@ export class ZabbixDatasource {
       password: this.password,
       basicAuth: this.basicAuth,
       withCredentials: this.withCredentials,
+      zabbixVersion: this.zabbixVersion,
       cacheTTL: this.cacheTTL,
       enableDirectDBConnection: this.enableDirectDBConnection,
       dbConnectionDatasourceId: this.dbConnectionDatasourceId,
@@ -380,6 +384,20 @@ export class ZabbixDatasource {
     });
   }
 
+  /**
+   * Get Zabbix version
+   */
+  getVersion() {
+    return this.zabbix.getVersion()
+    .then(version => {
+      const zabbixVersion = utils.parseVersion(version);
+      if (!zabbixVersion) {
+        return null;
+      }
+      return zabbixVersion.major;
+    });
+  }
+
   ////////////////
   // Templating //
   ////////////////