Add flag to load relations sequentially or concurrently (#225)

* Add flag to load relations sequentially or concurrently

* Fix database init in graph-node test

* Fix graph-node watcher query method and add changes to codegen

packages/graph-node/test/utils/index.ts

@@ -9,7 +9,7 @@ import { StorageLayout } from '@cerc-io/solidity-mapper';
 
 import { EventData } from '../../src/utils';
 import { Database } from '../../src/database';
-import { Indexer } from './indexer';
+import { Indexer, ServerConfig } from './indexer';
 
 const NETWORK_URL = 'http://127.0.0.1:8081';
 const IPLD_ETH_SERVER_GQL_URL = 'http://127.0.0.1:8082/graphql';
@@ -72,7 +72,8 @@ export const getDummyGraphData = (): any => {
 
 export const getTestDatabase = (): Database => {
   const baseDatabase = new BaseDatabase({ type: 'postgres' });
-  return new Database(baseDatabase);
+  const serverConfig = new ServerConfig();
+  return new Database(serverConfig, baseDatabase);
 };
 
 export const getTestIndexer = (storageLayout?: Map<string, StorageLayout>): Indexer => {

packages/graph-node/test/utils/indexer.ts

@@ -203,7 +203,7 @@ export class Indexer implements IndexerInterface {
   }
 }
 
-class ServerConfig implements ServerConfigInterface {
+export class ServerConfig implements ServerConfigInterface {
   host: string;
   port: number;
   mode: string;
@@ -217,6 +217,7 @@ class ServerConfig implements ServerConfigInterface {
   maxEventsBlockRange: number;
   clearEntitiesCacheInterval: number;
   skipStateFieldsUpdate: boolean;
+  loadRelationsSequential: boolean;
 
   constructor () {
     this.host = '';
@@ -232,5 +233,6 @@ class ServerConfig implements ServerConfigInterface {
     this.maxEventsBlockRange = 0;
     this.clearEntitiesCacheInterval = 0;
     this.skipStateFieldsUpdate = false;
+    this.loadRelationsSequential = false;
   }
 }