Add config for GQL requests cache (#228)

* Add config and a method to set cache control settings for GQL requests

* Add option for max size in GQL cache config

* Fix failing tests

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

@@ -3,13 +3,13 @@
 //
 
 import { BaseProvider } from '@ethersproject/providers';
-import { getCustomProvider, Database as BaseDatabase } from '@cerc-io/util';
+import { getCustomProvider, Database as BaseDatabase, ServerConfig } from '@cerc-io/util';
 import { EthClient } from '@cerc-io/ipld-eth-client';
 import { StorageLayout } from '@cerc-io/solidity-mapper';
 
 import { EventData } from '../../src/utils';
 import { Database } from '../../src/database';
-import { Indexer, ServerConfig } from './indexer';
+import { Indexer } 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 +72,7 @@ export const getDummyGraphData = (): any => {
 
 export const getTestDatabase = (): Database => {
   const baseDatabase = new BaseDatabase({ type: 'postgres' });
-  const serverConfig = new ServerConfig();
+  const serverConfig = {} as ServerConfig;
   return new Database(serverConfig, baseDatabase);
 };
 

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

@@ -6,7 +6,7 @@ import {
   BlockProgressInterface,
   EventInterface,
   SyncStatusInterface,
-  ServerConfig as ServerConfigInterface,
+  ServerConfig,
   ValueResult,
   ContractInterface,
   StateStatus,
@@ -29,7 +29,7 @@ export class Indexer implements IndexerInterface {
   }
 
   get serverConfig () {
-    return new ServerConfig();
+    return {} as ServerConfig;
   }
 
   get storageLayoutMap (): Map<string, StorageLayout> {
@@ -202,37 +202,3 @@ export class Indexer implements IndexerInterface {
     return undefined;
   }
 }
-
-export class ServerConfig implements ServerConfigInterface {
-  host: string;
-  port: number;
-  mode: string;
-  kind: string;
-  checkpointing: boolean;
-  checkpointInterval: number;
-  subgraphPath: string;
-  enableState: boolean;
-  wasmRestartBlocksInterval: number;
-  filterLogs: boolean;
-  maxEventsBlockRange: number;
-  clearEntitiesCacheInterval: number;
-  skipStateFieldsUpdate: boolean;
-  loadRelationsSequential: boolean;
-
-  constructor () {
-    this.host = '';
-    this.port = 0;
-    this.mode = '';
-    this.kind = '';
-    this.checkpointing = false;
-    this.checkpointInterval = 0;
-    this.subgraphPath = '';
-    this.enableState = false;
-    this.wasmRestartBlocksInterval = 0;
-    this.filterLogs = false;
-    this.maxEventsBlockRange = 0;
-    this.clearEntitiesCacheInterval = 0;
-    this.skipStateFieldsUpdate = false;
-    this.loadRelationsSequential = false;
-  }
-}