Implement WASM instance restart to handle out of memory error (#81)

* Test case for wasm out of memory error

* Restart wasm instance after N blocks

* Handle out of memory error and re instantiate WASM

* Remove old instance from map before reinstantiating WASM

packages/eden-watcher/environments/local.toml

@@ -13,6 +13,7 @@
   ipfsApiAddr = "/ip4/127.0.0.1/tcp/5001"
 
   subgraphPath = "../graph-node/test/subgraph/eden"
+  wasmRestartBlocksInterval = 20
 
 [database]
   type = "postgres"

packages/eden-watcher/src/cli/checkpoint.ts

@@ -49,7 +49,7 @@ const main = async (): Promise<void> => {
   const graphDb = new GraphDatabase(config.database, path.resolve(__dirname, 'entity/*'));
   await graphDb.init();
 
-  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, ethProvider, config.server.subgraphPath);
+  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, ethProvider, config.server);
 
   const jobQueueConfig = config.jobQueue;
   assert(jobQueueConfig, 'Missing job queue config');

packages/eden-watcher/src/cli/export-state.ts

@@ -46,7 +46,7 @@ const main = async (): Promise<void> => {
   const graphDb = new GraphDatabase(config.database, path.resolve(__dirname, 'entity/*'));
   await graphDb.init();
 
-  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, ethProvider, config.server.subgraphPath);
+  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, ethProvider, config.server);
 
   const jobQueueConfig = config.jobQueue;
   assert(jobQueueConfig, 'Missing job queue config');

packages/eden-watcher/src/cli/import-state.ts

@@ -50,7 +50,7 @@ export const main = async (): Promise<any> => {
   const graphDb = new GraphDatabase(config.database, path.resolve(__dirname, 'entity/*'));
   await graphDb.init();
 
-  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, ethProvider, config.server.subgraphPath);
+  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, ethProvider, config.server);
 
   // Note: In-memory pubsub works fine for now, as each watcher is a single process anyway.
   // Later: https://www.apollographql.com/docs/apollo-server/data/subscriptions/#production-pubsub-libraries

packages/eden-watcher/src/cli/inspect-cid.ts

@@ -46,7 +46,7 @@ const main = async (): Promise<void> => {
   const graphDb = new GraphDatabase(config.database, path.resolve(__dirname, 'entity/*'));
   await graphDb.init();
 
-  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, ethProvider, config.server.subgraphPath);
+  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, ethProvider, config.server);
 
   const jobQueueConfig = config.jobQueue;
   assert(jobQueueConfig, 'Missing job queue config');

packages/eden-watcher/src/cli/reset-cmds/state.ts

@@ -56,7 +56,7 @@ export const handler = async (argv: any): Promise<void> => {
   const graphDb = new GraphDatabase(config.database, path.resolve(__dirname, 'entity/*'));
   await graphDb.init();
 
-  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, ethProvider, config.server.subgraphPath);
+  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, ethProvider, config.server);
 
   const jobQueueConfig = config.jobQueue;
   assert(jobQueueConfig, 'Missing job queue config');

packages/eden-watcher/src/cli/watch-contract.ts

@@ -62,7 +62,7 @@ const main = async (): Promise<void> => {
   const graphDb = new GraphDatabase(config.database, path.resolve(__dirname, 'entity/*'));
   await graphDb.init();
 
-  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, ethProvider, config.server.subgraphPath);
+  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, ethProvider, config.server);
 
   const jobQueueConfig = config.jobQueue;
   assert(jobQueueConfig, 'Missing job queue config');

packages/eden-watcher/src/fill.ts

@@ -61,7 +61,7 @@ export const main = async (): Promise<any> => {
   const graphDb = new GraphDatabase(config.database, path.resolve(__dirname, 'entity/*'));
   await graphDb.init();
 
-  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, ethProvider, config.server.subgraphPath);
+  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, ethProvider, config.server);
 
   const jobQueueConfig = config.jobQueue;
   assert(jobQueueConfig, 'Missing job queue config');

packages/eden-watcher/src/job-runner.ts

@@ -21,8 +21,7 @@ import {
   QUEUE_IPFS,
   JobQueueConfig,
   DEFAULT_CONFIG_PATH,
-  initClients,
+  initClients
-  JOB_KIND_INDEX
 } from '@vulcanize/util';
 import { GraphWatcher, Database as GraphDatabase } from '@vulcanize/graph-node';
 
@@ -57,12 +56,6 @@ export class JobRunner {
       // TODO Call pre-block hook here (Directly or indirectly (Like done through indexer.processEvent for events)).
 
       await this._baseJobRunner.processBlock(job);
-
-      const { data: { kind, blockHash, blockNumber } } = job;
-
-      if (kind === JOB_KIND_INDEX) {
-        await this._indexer.processBlock(blockHash, blockNumber);
-      }
     });
   }
 
@@ -138,7 +131,7 @@ export const main = async (): Promise<any> => {
   const graphDb = new GraphDatabase(config.database, path.resolve(__dirname, 'entity/*'));
   await graphDb.init();
 
-  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, ethProvider, config.server.subgraphPath);
+  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, ethProvider, config.server);
 
   const jobQueueConfig = config.jobQueue;
   assert(jobQueueConfig, 'Missing job queue config');

packages/eden-watcher/src/server.ts

@@ -46,7 +46,7 @@ export const main = async (): Promise<any> => {
   const graphDb = new GraphDatabase(config.database, path.resolve(__dirname, 'entity/*'));
   await graphDb.init();
 
-  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, ethProvider, config.server.subgraphPath);
+  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, ethProvider, config.server);
 
   // Note: In-memory pubsub works fine for now, as each watcher is a single process anyway.
   // Later: https://www.apollographql.com/docs/apollo-server/data/subscriptions/#production-pubsub-libraries

packages/graph-node/assembly/index.ts

@@ -80,3 +80,7 @@ export function testLog (): void {
   log.error('Error message', []);
   log.critical('Critical message', []);
 }
+
+export function testMemory (value: string): void {
+  log.debug('testMemory value:', [value.slice(0, 10)]);
+}

packages/graph-node/package.json

@@ -30,7 +30,7 @@
   "scripts": {
     "lint": "eslint .",
     "build": "tsc",
-    "asbuild:debug": "asc assembly/index.ts --lib ./node_modules --exportRuntime --target debug --runPasses asyncify",
+    "asbuild:debug": "asc assembly/index.ts --lib ./node_modules --exportRuntime --target debug --runPasses asyncify --runtime stub --maximumMemory 10",
     "asbuild:release": "asc assembly/index.ts --lib ./node_modules --exportRuntime --target release --runPasses asyncify",
     "asbuild": "yarn asbuild:debug && yarn asbuild:release",
     "test": "yarn asbuild:debug && DEBUG=vulcanize:* mocha src/**/*.test.ts",

packages/graph-node/src/loader.test.ts

@@ -4,6 +4,7 @@
 
 import path from 'path';
 import { expect } from 'chai';
+import { utils } from 'ethers';
 
 import { BaseProvider } from '@ethersproject/providers';
 
@@ -19,6 +20,7 @@ describe('wasm loader tests', () => {
   let db: Database;
   let indexer: Indexer;
   let provider: BaseProvider;
+  let module: WebAssembly.Module;
 
   before(async () => {
     db = getTestDatabase();
@@ -35,6 +37,7 @@ describe('wasm loader tests', () => {
     );
 
     exports = instance.exports;
+    module = instance.module;
   });
 
   it('should execute exported function', async () => {
@@ -76,4 +79,42 @@ describe('wasm loader tests', () => {
     // Should print all log messages for different levels.
     await testLog();
   });
+
+  it('should throw out of memory error', async () => {
+    // Maximum memory is set to 10 pages (640KB) when compiling using asc maximumMemory option.
+    // https://www.assemblyscript.org/compiler.html#command-line-options
+
+    const { testMemory, __newString, memory } = exports;
+
+    try {
+      // Continue loop until memory size reaches max size 640KB
+      // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/Memory/buffer
+      while (memory.buffer.byteLength <= 1024 * 640) {
+        // Create long string of 100KB.
+        const longString = utils.hexValue(utils.randomBytes(1024 * 100 / 2));
+
+        const stringPtr = await __newString(longString);
+        await testMemory(stringPtr);
+      }
+
+      expect.fail('wasm code should throw error');
+    } catch (error) {
+      expect(error).to.be.instanceof(WebAssembly.RuntimeError);
+      expect(error.message).to.equal('unreachable');
+    }
+  });
+
+  it('should reinstantiate wasm', async () => {
+    const instance = await instantiate(
+      db,
+      indexer,
+      provider,
+      { event: {} },
+      module
+    );
+
+    exports = instance.exports;
+    const { callGraphAPI } = exports;
+    await callGraphAPI();
+  });
 });

packages/graph-node/src/loader.ts

@@ -34,13 +34,11 @@ const BN_ENDIANNESS = 'le';
 
 type idOfType = (TypeId: number) => number
 
-interface DataSource {
+export interface GraphData {
-  address: string
-}
-
-interface GraphData {
   abis?: {[key: string]: ContractInterface};
-  dataSource?: DataSource;
+  dataSource?: {
+    address: string
+  };
 }
 
 export interface Context {
@@ -56,11 +54,16 @@ export const instantiate = async (
   indexer: IndexerInterface,
   provider: BaseProvider,
   context: Context,
-  filePath: string,
+  filePathOrModule: string | WebAssembly.Module,
   data: GraphData = {}
 ): Promise<loader.ResultObject & { exports: any }> => {
   const { abis = {}, dataSource } = data;
-  const buffer = await fs.readFile(filePath);
+
+  let source = filePathOrModule;
+
+  if (!(filePathOrModule instanceof WebAssembly.Module)) {
+    source = await fs.readFile(filePathOrModule);
+  }
 
   const imports: WebAssembly.Imports = {
     index: {
@@ -580,7 +583,7 @@ export const instantiate = async (
     }
   };
 
-  const instance = await loader.instantiate(buffer, imports);
+  const instance = await loader.instantiate(source, imports);
   const { exports: instanceExports } = instance;
 
   const { __getString, __newString, __getArray, __newArray } = instanceExports;

packages/graph-node/src/watcher.ts

@@ -11,17 +11,18 @@ import { ContractInterface, utils, providers } from 'ethers';
 
 import { ResultObject } from '@vulcanize/assemblyscript/lib/loader';
 import { EthClient } from '@vulcanize/ipld-eth-client';
-import { IndexerInterface, getFullBlock, BlockHeight } from '@vulcanize/util';
+import { IndexerInterface, getFullBlock, BlockHeight, ServerConfig } from '@vulcanize/util';
 
 import { createBlock, createEvent, getSubgraphConfig, resolveEntityFieldConflicts } from './utils';
-import { Context, instantiate } from './loader';
+import { Context, GraphData, instantiate } from './loader';
 import { Database } from './database';
 
 const log = debug('vulcanize:graph-watcher');
 
 interface DataSource {
-  instance: ResultObject & { exports: any },
+  instance?: ResultObject & { exports: any },
-  contractInterface: utils.Interface
+  contractInterface: utils.Interface,
+  data: GraphData,
 }
 
 export class GraphWatcher {
@@ -30,6 +31,7 @@ export class GraphWatcher {
   _postgraphileClient: EthClient;
   _ethProvider: providers.BaseProvider;
   _subgraphPath: string;
+  _wasmRestartBlocksInterval: number;
   _dataSources: any[] = [];
   _dataSourceMap: { [key: string]: DataSource } = {};
 
@@ -37,11 +39,12 @@ export class GraphWatcher {
     event: {}
   }
 
-  constructor (database: Database, postgraphileClient: EthClient, ethProvider: providers.BaseProvider, subgraphPath: string) {
+  constructor (database: Database, postgraphileClient: EthClient, ethProvider: providers.BaseProvider, serverConfig: ServerConfig) {
     this._database = database;
     this._postgraphileClient = postgraphileClient;
     this._ethProvider = ethProvider;
-    this._subgraphPath = subgraphPath;
+    this._subgraphPath = serverConfig.subgraphPath;
+    this._wasmRestartBlocksInterval = serverConfig.wasmRestartBlocksInterval;
   }
 
   async init () {
@@ -76,7 +79,8 @@ export class GraphWatcher {
 
       return {
         instance: await instantiate(this._database, this._indexer, this._ethProvider, this._context, filePath, data),
-        contractInterface
+        contractInterface,
+        data
       };
     }, {});
 
@@ -130,7 +134,9 @@ export class GraphWatcher {
       return;
     }
 
-    const { instance: { exports: instanceExports }, contractInterface } = this._dataSourceMap[contract];
+    const { instance, contractInterface } = this._dataSourceMap[contract];
+    assert(instance);
+    const { exports: instanceExports } = instance;
 
     // Get event handler based on event topic (from event signature).
     const eventTopic = contractInterface.getEventTopic(eventSignature);
@@ -162,7 +168,7 @@ export class GraphWatcher {
     // Create ethereum event to be passed to the wasm event handler.
     const ethereumEvent = await createEvent(instanceExports, contract, data);
 
-    await instanceExports[eventHandler.handler](ethereumEvent);
+    await this._handleMemoryError(instanceExports[eventHandler.handler](ethereumEvent), dataSource.source.address);
   }
 
   async handleBlock (blockHash: string) {
@@ -172,12 +178,23 @@ export class GraphWatcher {
 
     // Call block handler(s) for each contract.
     for (const dataSource of this._dataSources) {
+      // Reinstantiate WASM after every N blocks.
+      if (blockData.blockNumber % this._wasmRestartBlocksInterval === 0) {
+        // The WASM instance allocates memory as required and the limit is 4GB.
+        // https://stackoverflow.com/a/40453962
+        // https://github.com/AssemblyScript/assemblyscript/pull/1268#issue-618411291
+        // https://github.com/WebAssembly/memory64/blob/main/proposals/memory64/Overview.md#motivation
+        await this._reInitWasm(dataSource.source.address);
+      }
+
       // Check if block handler(s) are configured and start block has been reached.
       if (!dataSource.mapping.blockHandlers || blockData.blockNumber < dataSource.source.startBlock) {
         continue;
       }
 
-      const { instance: { exports: instanceExports } } = this._dataSourceMap[dataSource.source.address];
+      const { instance } = this._dataSourceMap[dataSource.source.address];
+      assert(instance);
+      const { exports: instanceExports } = instance;
 
       // Create ethereum block to be passed to a wasm block handler.
       const ethereumBlock = await createBlock(instanceExports, blockData);
@@ -187,7 +204,7 @@ export class GraphWatcher {
         await instanceExports[blockHandler.handler](ethereumBlock);
       });
 
-      await Promise.all(blockHandlerPromises);
+      await this._handleMemoryError(Promise.all(blockHandlerPromises), dataSource.source.address);
     }
   }
 
@@ -202,4 +219,48 @@ export class GraphWatcher {
     // Resolve any field name conflicts in the entity result.
     return resolveEntityFieldConflicts(result);
   }
+
+  /**
+   * Method to reinstantiate WASM instance for specified contract address.
+   * @param contractAddress
+   */
+  async _reInitWasm (contractAddress: string): Promise<void> {
+    const { data, instance } = this._dataSourceMap[contractAddress];
+
+    assert(instance);
+    const { module } = instance;
+    delete this._dataSourceMap[contractAddress].instance;
+
+    assert(this._indexer);
+
+    // Reinstantiate with existing module.
+    this._dataSourceMap[contractAddress].instance = await instantiate(
+      this._database,
+      this._indexer,
+      this._ethProvider,
+      this._context,
+      module,
+      data
+    );
+
+    // Important to call _start for built subgraphs on instantiation!
+    // TODO: Check api version https://github.com/graphprotocol/graph-node/blob/6098daa8955bdfac597cec87080af5449807e874/runtime/wasm/src/module/mod.rs#L533
+    this._dataSourceMap[contractAddress].instance!.exports._start();
+  }
+
+  async _handleMemoryError (handlerPromise: Promise<any>, contractAddress: string): Promise<void> {
+    try {
+      await handlerPromise;
+    } catch (error) {
+      if (error instanceof WebAssembly.RuntimeError && error instanceof Error) {
+        if (error.message === 'unreachable') {
+          // Reintantiate WASM for out of memory error.
+          this._reInitWasm(contractAddress);
+        }
+      }
+
+      // Job will retry after throwing error.
+      throw error;
+    }
+  }
 }

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

@@ -1,5 +1,5 @@
 import assert from 'assert';
-import { DeepPartial } from 'typeorm';
+import { FindConditions, FindManyOptions } from 'typeorm';
 
 import {
   IndexerInterface,
@@ -51,19 +51,19 @@ export class Indexer implements IndexerInterface {
     return '';
   }
 
-  async getOrFetchBlockEvents (block: DeepPartial<BlockProgressInterface>): Promise<Array<EventInterface>> {
+  async fetchBlockEvents (block: BlockProgressInterface): Promise<BlockProgressInterface> {
-    assert(block);
+    return block;
-
-    return [];
   }
 
   async removeUnknownEvents (block: BlockProgressInterface): Promise<void> {
     assert(block);
   }
 
-  async updateBlockProgress (blockHash: string, lastProcessedEventIndex: number): Promise<void> {
+  async updateBlockProgress (block: BlockProgressInterface, lastProcessedEventIndex: number): Promise<BlockProgressInterface> {
-    assert(blockHash);
+    assert(block);
     assert(lastProcessedEventIndex);
+
+    return block;
   }
 
   async updateSyncStatusChainHead (blockHash: string, blockNumber: number): Promise<SyncStatusInterface> {
@@ -104,6 +104,21 @@ export class Indexer implements IndexerInterface {
   getEntityTypesMap (): Map<string, { [key: string]: string; }> {
     return new Map();
   }
+
+  async getBlockProgressEntities (where: FindConditions<BlockProgressInterface>, options: FindManyOptions<BlockProgressInterface>): Promise<BlockProgressInterface[]> {
+    assert(where);
+    assert(options);
+
+    return [];
+  }
+
+  async saveEventEntity (dbEvent: EventInterface): Promise<EventInterface> {
+    return dbEvent;
+  }
+
+  async processEvent (event: EventInterface): Promise<void> {
+    assert(event);
+  }
 }
 
 class SyncStatus implements SyncStatusInterface {

packages/graph-test-watcher/environments/local.toml

@@ -13,6 +13,7 @@
   ipfsApiAddr = "/ip4/127.0.0.1/tcp/5001"
 
   subgraphPath = "../graph-node/test/subgraph/example1/build"
+  wasmRestartBlocksInterval = 20
 
 [database]
   type = "postgres"

packages/graph-test-watcher/src/cli/checkpoint.ts

@@ -49,7 +49,7 @@ const main = async (): Promise<void> => {
   const graphDb = new GraphDatabase(config.database, path.resolve(__dirname, 'entity/*'));
   await graphDb.init();
 
-  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, ethProvider, config.server.subgraphPath);
+  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, ethProvider, config.server);
 
   const jobQueueConfig = config.jobQueue;
   assert(jobQueueConfig, 'Missing job queue config');

packages/graph-test-watcher/src/cli/export-state.ts

@@ -46,7 +46,7 @@ const main = async (): Promise<void> => {
   const graphDb = new GraphDatabase(config.database, path.resolve(__dirname, 'entity/*'));
   await graphDb.init();
 
-  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, ethProvider, config.server.subgraphPath);
+  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, ethProvider, config.server);
 
   const jobQueueConfig = config.jobQueue;
   assert(jobQueueConfig, 'Missing job queue config');

packages/graph-test-watcher/src/cli/import-state.ts

@@ -50,7 +50,7 @@ export const main = async (): Promise<any> => {
   const graphDb = new GraphDatabase(config.database, path.resolve(__dirname, 'entity/*'));
   await graphDb.init();
 
-  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, ethProvider, config.server.subgraphPath);
+  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, ethProvider, config.server);
 
   // Note: In-memory pubsub works fine for now, as each watcher is a single process anyway.
   // Later: https://www.apollographql.com/docs/apollo-server/data/subscriptions/#production-pubsub-libraries

packages/graph-test-watcher/src/cli/inspect-cid.ts

@@ -46,7 +46,7 @@ const main = async (): Promise<void> => {
   const graphDb = new GraphDatabase(config.database, path.resolve(__dirname, 'entity/*'));
   await graphDb.init();
 
-  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, ethProvider, config.server.subgraphPath);
+  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, ethProvider, config.server);
 
   const jobQueueConfig = config.jobQueue;
   assert(jobQueueConfig, 'Missing job queue config');

packages/graph-test-watcher/src/cli/reset-cmds/state.ts

@@ -44,7 +44,7 @@ export const handler = async (argv: any): Promise<void> => {
   const graphDb = new GraphDatabase(config.database, path.resolve(__dirname, 'entity/*'));
   await graphDb.init();
 
-  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, ethProvider, config.server.subgraphPath);
+  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, ethProvider, config.server);
 
   const jobQueueConfig = config.jobQueue;
   assert(jobQueueConfig, 'Missing job queue config');

packages/graph-test-watcher/src/cli/watch-contract.ts

@@ -62,7 +62,7 @@ const main = async (): Promise<void> => {
   const graphDb = new GraphDatabase(config.database, path.resolve(__dirname, 'entity/*'));
   await graphDb.init();
 
-  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, ethProvider, config.server.subgraphPath);
+  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, ethProvider, config.server);
 
   const jobQueueConfig = config.jobQueue;
   assert(jobQueueConfig, 'Missing job queue config');

packages/graph-test-watcher/src/fill.ts

@@ -61,7 +61,7 @@ export const main = async (): Promise<any> => {
   const graphDb = new GraphDatabase(config.database, path.resolve(__dirname, 'entity/*'));
   await graphDb.init();
 
-  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, ethProvider, config.server.subgraphPath);
+  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, ethProvider, config.server);
 
   const jobQueueConfig = config.jobQueue;
   assert(jobQueueConfig, 'Missing job queue config');

packages/graph-test-watcher/src/job-runner.ts

@@ -21,8 +21,7 @@ import {
   QUEUE_IPFS,
   JobQueueConfig,
   DEFAULT_CONFIG_PATH,
-  initClients,
+  initClients
-  JOB_KIND_INDEX
 } from '@vulcanize/util';
 import { GraphWatcher, Database as GraphDatabase } from '@vulcanize/graph-node';
 
@@ -57,12 +56,6 @@ export class JobRunner {
       // TODO Call pre-block hook here (Directly or indirectly (Like done through indexer.processEvent for events)).
 
       await this._baseJobRunner.processBlock(job);
-
-      const { data: { kind, blockHash, blockNumber } } = job;
-
-      if (kind === JOB_KIND_INDEX) {
-        await this._indexer.processBlock(blockHash, blockNumber);
-      }
     });
   }
 
@@ -138,7 +131,7 @@ export const main = async (): Promise<any> => {
   const graphDb = new GraphDatabase(config.database, path.resolve(__dirname, 'entity/*'));
   await graphDb.init();
 
-  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, ethProvider, config.server.subgraphPath);
+  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, ethProvider, config.server);
 
   const jobQueueConfig = config.jobQueue;
   assert(jobQueueConfig, 'Missing job queue config');

packages/graph-test-watcher/src/server.ts

@@ -46,7 +46,7 @@ export const main = async (): Promise<any> => {
   const graphDb = new GraphDatabase(config.database, path.resolve(__dirname, 'entity/*'));
   await graphDb.init();
 
-  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, ethProvider, config.server.subgraphPath);
+  const graphWatcher = new GraphWatcher(graphDb, postgraphileClient, ethProvider, config.server);
 
   // Note: In-memory pubsub works fine for now, as each watcher is a single process anyway.
   // Later: https://www.apollographql.com/docs/apollo-server/data/subscriptions/#production-pubsub-libraries

packages/util/src/config.ts

@@ -33,6 +33,7 @@ export interface ServerConfig {
   checkpointInterval: number;
   ipfsApiAddr: string;
   subgraphPath: string;
+  wasmRestartBlocksInterval: number;
 }
 
 export interface UpstreamConfig {

packages/util/src/job-runner.ts

@@ -232,6 +232,10 @@ export class JobRunner {
       await this._jobQueue.pushJob(QUEUE_EVENT_PROCESSING, { kind: JOB_KIND_EVENTS, blockHash: blockProgress.blockHash, publish: true });
     }
 
+    if (this._indexer.processBlock) {
+      await this._indexer.processBlock(blockHash, blockNumber);
+    }
+
     const indexBlockDuration = new Date().getTime() - indexBlockStartTime.getTime();
     log(`time:job-runner#_indexBlock: ${indexBlockDuration}ms`);
   }

packages/util/src/types.ts

@@ -98,6 +98,7 @@ export interface IndexerInterface {
   createDiffStaged?: (contractAddress: string, blockHash: string, data: any) => Promise<void>
   processInitialState?: (contractAddress: string, blockHash: string) => Promise<any>
   processStateCheckpoint?: (contractAddress: string, blockHash: string) => Promise<boolean>
+  processBlock?: (blockHash: string, blockNumber: number) => Promise<void>
 }
 
 export interface EventWatcherInterface {