Refactor server CLI to cli package (#253)

* Refactor server CLI to cli package

* Use server CLI from cli package in all watchers

packages/cli/src/base.ts

@@ -78,7 +78,9 @@ export class BaseCmd {
       jobQueue: JobQueue,
       graphWatcher?: GraphWatcher
     ) => IndexerInterface,
-    clients: { [key: string]: any } = {}
+    clients: { [key: string]: any } = {},
+    entityQueryTypeMap?: Map<any, any>,
+    entityToLatestEntityMap?: Map<any, any>
   ): Promise<void> {
     assert(this._config);
 
@@ -100,7 +102,7 @@ export class BaseCmd {
 
     // Check if subgraph watcher.
     if (this._config.server.subgraphPath) {
-      const graphWatcher = await this._getGraphWatcher(this._database.baseDatabase);
+      const graphWatcher = await this._getGraphWatcher(this._database.baseDatabase, entityQueryTypeMap, entityToLatestEntityMap);
       this._indexer = new Indexer(this._config.server, this._database, this._clients, ethProvider, this._jobQueue, graphWatcher);
       await this._indexer.init();
 
@@ -130,12 +132,16 @@ export class BaseCmd {
     this._eventWatcher = new EventWatcher(this._clients.ethClient, this._indexer, pubsub, this._jobQueue);
   }
 
-  async _getGraphWatcher (baseDatabase: BaseDatabase): Promise<GraphWatcher> {
+  async _getGraphWatcher (
+    baseDatabase: BaseDatabase,
+    entityQueryTypeMap?: Map<any, any>,
+    entityToLatestEntityMap?: Map<any, any>
+  ): Promise<GraphWatcher> {
     assert(this._config);
     assert(this._clients?.ethClient);
     assert(this._ethProvider);
 
-    this._graphDb = new GraphDatabase(this._config.server, baseDatabase);
+    this._graphDb = new GraphDatabase(this._config.server, baseDatabase, entityQueryTypeMap, entityToLatestEntityMap);
     await this._graphDb.init();
 
     return new GraphWatcher(this._graphDb, this._clients.ethClient, this._ethProvider, this._config.server);

packages/cli/src/index.ts

@@ -10,3 +10,4 @@ export * from './checkpoint/verify';
 export * from './inspect-cid';
 export * from './import-state';
 export * from './export-state';
+export * from './server';

packages/cli/src/server.ts

@@ -0,0 +1,128 @@
+//
+// Copyright 2022 Vulcanize, Inc.
+//
+
+import yargs from 'yargs';
+import { hideBin } from 'yargs/helpers';
+import 'reflect-metadata';
+import fs from 'fs';
+import path from 'path';
+import assert from 'assert';
+import { ConnectionOptions } from 'typeorm';
+import { PubSub } from 'graphql-subscriptions';
+import express, { Application } from 'express';
+import { ApolloServer } from 'apollo-server-express';
+
+import { JsonRpcProvider } from '@ethersproject/providers';
+import { GraphWatcher } from '@cerc-io/graph-node';
+import { EthClient } from '@cerc-io/ipld-eth-client';
+import {
+  DEFAULT_CONFIG_PATH,
+  JobQueue,
+  DatabaseInterface,
+  IndexerInterface,
+  ServerConfig,
+  Clients,
+  EventWatcherInterface,
+  KIND_ACTIVE,
+  createAndStartServer,
+  startGQLMetricsServer
+} from '@cerc-io/util';
+import { TypeSource } from '@graphql-tools/utils';
+
+import { BaseCmd } from './base';
+
+interface Arguments {
+  configFile: string;
+  importFile: string;
+}
+
+export class ServerCmd {
+  _argv?: Arguments
+  _baseCmd: BaseCmd;
+
+  constructor () {
+    this._baseCmd = new BaseCmd();
+  }
+
+  async initConfig<ConfigType> (): Promise<ConfigType> {
+    this._argv = this._getArgv();
+    assert(this._argv);
+
+    return this._baseCmd.initConfig(this._argv.configFile);
+  }
+
+  async init (
+    Database: new (config: ConnectionOptions,
+      serverConfig?: ServerConfig
+    ) => DatabaseInterface,
+    Indexer: new (
+      serverConfig: ServerConfig,
+      db: DatabaseInterface,
+      clients: Clients,
+      ethProvider: JsonRpcProvider,
+      jobQueue: JobQueue,
+      graphWatcher?: GraphWatcher
+    ) => IndexerInterface,
+    EventWatcher: new(
+      ethClient: EthClient,
+      indexer: IndexerInterface,
+      pubsub: PubSub,
+      jobQueue: JobQueue
+    ) => EventWatcherInterface,
+    clients: { [key: string]: any } = {},
+    entityQueryTypeMap?: Map<any, any>,
+    entityToLatestEntityMap?: Map<any, any>
+  ): Promise<void> {
+    await this.initConfig();
+
+    await this._baseCmd.init(Database, Indexer, clients, entityQueryTypeMap, entityToLatestEntityMap);
+    await this._baseCmd.initEventWatcher(EventWatcher);
+  }
+
+  async exec (
+    createResolvers: (indexer: IndexerInterface, eventWatcher: EventWatcherInterface) => Promise<any>,
+    typeDefs: TypeSource
+  ): Promise<{
+    app: Application,
+    server: ApolloServer
+  }> {
+    const config = this._baseCmd.config;
+    const jobQueue = this._baseCmd.jobQueue;
+    const indexer = this._baseCmd.indexer;
+    const eventWatcher = this._baseCmd.eventWatcher;
+
+    assert(config);
+    assert(jobQueue);
+    assert(indexer);
+    assert(eventWatcher);
+
+    if (config.server.kind === KIND_ACTIVE) {
+      // Delete jobs to prevent creating jobs after completion of processing previous block.
+      await jobQueue.deleteAllJobs();
+      await eventWatcher.start();
+    }
+
+    const resolvers = await createResolvers(indexer, eventWatcher);
+
+    // Create an Express app
+    const app: Application = express();
+    const server = await createAndStartServer(app, typeDefs, resolvers, config.server);
+
+    await startGQLMetricsServer(config);
+
+    return { app, server };
+  }
+
+  _getArgv (): any {
+    return yargs(hideBin(process.argv))
+      .option('f', {
+        alias: 'config-file',
+        demandOption: true,
+        describe: 'configuration file path (toml)',
+        type: 'string',
+        default: DEFAULT_CONFIG_PATH
+      })
+      .argv;
+  }
+}

packages/eden-watcher/src/database.ts

@@ -34,7 +34,8 @@ import { Staker } from './entity/Staker';
 
 export const SUBGRAPH_ENTITIES = new Set([Account, Claim, Distribution, Distributor, Epoch, Network, Producer, ProducerEpoch, ProducerRewardCollectorChange, ProducerSet, ProducerSetChange, RewardSchedule, RewardScheduleEntry, Slash, Slot, SlotClaim, Staker]);
 export const ENTITIES = [...SUBGRAPH_ENTITIES];
-export const ENTITY_TO_LATEST_ENTITY_MAP: Map<any, any> = new Map();
+export const ENTITY_TO_LATEST_ENTITY_MAP = new Map();
+export const ENTITY_QUERY_TYPE_MAP = new Map();
 
 export class Database implements DatabaseInterface {
   _config: ConnectionOptions;

packages/eden-watcher/src/resolvers.ts

@@ -8,7 +8,7 @@ import debug from 'debug';
 import Decimal from 'decimal.js';
 import { GraphQLResolveInfo, GraphQLScalarType } from 'graphql';
 
-import { BlockHeight, OrderDirection, gqlTotalQueryCount, gqlQueryCount, jsonBigIntStringReplacer, getResultState, setGQLCacheHints } from '@cerc-io/util';
+import { BlockHeight, OrderDirection, gqlTotalQueryCount, gqlQueryCount, jsonBigIntStringReplacer, getResultState, setGQLCacheHints, IndexerInterface, EventWatcherInterface } from '@cerc-io/util';
 
 import { Indexer } from './indexer';
 import { EventWatcher } from './events';
@@ -34,8 +34,9 @@ import { Account } from './entity/Account';
 
 const log = debug('vulcanize:resolver');
 
-export const createResolvers = async (indexer: Indexer, eventWatcher: EventWatcher): Promise<any> => {
-  assert(indexer);
+export const createResolvers = async (indexerArg: IndexerInterface, eventWatcherArg: EventWatcherInterface): Promise<any> => {
+  const indexer = indexerArg as Indexer;
+  const eventWatcher = eventWatcherArg as EventWatcher;
 
   const gqlCacheConfig = indexer.serverConfig.gqlCache;
 

packages/eden-watcher/src/server.ts

@@ -4,86 +4,26 @@
 
 import fs from 'fs';
 import path from 'path';
-import assert from 'assert';
 import 'reflect-metadata';
-import express, { Application } from 'express';
-import { PubSub } from 'graphql-subscriptions';
-import yargs from 'yargs';
-import { hideBin } from 'yargs/helpers';
 import debug from 'debug';
 import 'graphql-import-node';
 
-import { DEFAULT_CONFIG_PATH, getConfig, Config, JobQueue, KIND_ACTIVE, initClients, startGQLMetricsServer, createAndStartServer } from '@cerc-io/util';
-import { GraphWatcher, Database as GraphDatabase } from '@cerc-io/graph-node';
+import { ServerCmd } from '@cerc-io/cli';
 
 import { createResolvers } from './resolvers';
 import { Indexer } from './indexer';
-import { Database, ENTITY_TO_LATEST_ENTITY_MAP } from './database';
+import { Database, ENTITY_QUERY_TYPE_MAP, ENTITY_TO_LATEST_ENTITY_MAP } from './database';
 import { EventWatcher } from './events';
 
 const log = debug('vulcanize:server');
 
 export const main = async (): Promise<any> => {
-  const argv = await yargs(hideBin(process.argv))
-    .option('f', {
-      alias: 'config-file',
-      demandOption: true,
-      describe: 'configuration file path (toml)',
-      type: 'string',
-      default: DEFAULT_CONFIG_PATH
-    })
-    .argv;
+  const serverCmd = new ServerCmd();
+  await serverCmd.init(Database, Indexer, EventWatcher, ENTITY_QUERY_TYPE_MAP, ENTITY_TO_LATEST_ENTITY_MAP);
 
-  const config: Config = await getConfig(argv.f);
-  const { ethClient, ethProvider } = await initClients(config);
-
-  const { kind: watcherKind } = config.server;
-
-  const db = new Database(config.database);
-  await db.init();
-
-  const graphDb = new GraphDatabase(config.server, db.baseDatabase, ENTITY_TO_LATEST_ENTITY_MAP);
-  await graphDb.init();
-
-  const graphWatcher = new GraphWatcher(graphDb, ethClient, 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
-  const pubsub = new PubSub();
-
-  const jobQueueConfig = config.jobQueue;
-  assert(jobQueueConfig, 'Missing job queue config');
-
-  const { dbConnectionString, maxCompletionLagInSecs } = jobQueueConfig;
-  assert(dbConnectionString, 'Missing job queue db connection string');
-
-  const jobQueue = new JobQueue({ dbConnectionString, maxCompletionLag: maxCompletionLagInSecs });
-
-  const indexer = new Indexer(config.server, db, { ethClient }, ethProvider, jobQueue, graphWatcher);
-  await indexer.init();
-
-  graphWatcher.setIndexer(indexer);
-  await graphWatcher.init();
-
-  const eventWatcher = new EventWatcher(ethClient, indexer, pubsub, jobQueue);
-
-  if (watcherKind === KIND_ACTIVE) {
-    await jobQueue.start();
-    // Delete jobs to prevent creating jobs after completion of processing previous block.
-    await jobQueue.deleteAllJobs();
-    await eventWatcher.start();
-  }
-
-  const resolvers = await createResolvers(indexer, eventWatcher);
   const typeDefs = fs.readFileSync(path.join(__dirname, 'schema.gql')).toString();
 
-  // Create an Express app
-  const app: Application = express();
-  const server = createAndStartServer(app, typeDefs, resolvers, config.server);
-
-  startGQLMetricsServer(config);
-
-  return { app, server };
+  return serverCmd.exec(createResolvers, typeDefs);
 };
 
 main().then(() => {

packages/erc20-watcher/src/events.ts

@@ -11,7 +11,8 @@ import {
   EventWatcher as BaseEventWatcher,
   EventWatcherInterface,
   QUEUE_BLOCK_PROCESSING,
-  QUEUE_EVENT_PROCESSING
+  QUEUE_EVENT_PROCESSING,
+  IndexerInterface
 } from '@cerc-io/util';
 
 import { Indexer } from './indexer';
@@ -24,12 +25,12 @@ export class EventWatcher implements EventWatcherInterface {
   _pubsub: PubSub
   _jobQueue: JobQueue
 
-  constructor (ethClient: EthClient, indexer: Indexer, pubsub: PubSub, jobQueue: JobQueue) {
+  constructor (ethClient: EthClient, indexer: IndexerInterface, pubsub: PubSub, jobQueue: JobQueue) {
     assert(ethClient);
     assert(indexer);
 
     this._ethClient = ethClient;
-    this._indexer = indexer;
+    this._indexer = indexer as Indexer;
     this._pubsub = pubsub;
     this._jobQueue = jobQueue;
     this._baseEventWatcher = new BaseEventWatcher(this._ethClient, this._indexer, this._pubsub, this._jobQueue);

packages/erc20-watcher/src/resolvers.ts

@@ -6,7 +6,7 @@ import assert from 'assert';
 import BigInt from 'apollo-type-bigint';
 import debug from 'debug';
 
-import { ValueResult } from '@cerc-io/util';
+import { EventWatcherInterface, IndexerInterface, ValueResult } from '@cerc-io/util';
 
 import { Indexer } from './indexer';
 import { EventWatcher } from './events';
@@ -14,8 +14,9 @@ import { CONTRACT_KIND } from './utils/index';
 
 const log = debug('vulcanize:resolver');
 
-export const createResolvers = async (indexer: Indexer, eventWatcher: EventWatcher): Promise<any> => {
-  assert(indexer);
+export const createResolvers = async (indexerArg: IndexerInterface, eventWatcherArg: EventWatcherInterface): Promise<any> => {
+  const indexer = indexerArg as Indexer;
+  const eventWatcher = eventWatcherArg as EventWatcher;
 
   return {
     BigInt: new BigInt('bigInt'),

packages/erc20-watcher/src/server.ts

@@ -2,19 +2,12 @@
 // Copyright 2021 Vulcanize, Inc.
 //
 
-import assert from 'assert';
-import 'reflect-metadata';
-import express, { Application } from 'express';
-import { PubSub } from 'graphql-subscriptions';
-import yargs from 'yargs';
-import { hideBin } from 'yargs/helpers';
 import debug from 'debug';
 import 'graphql-import-node';
 
-import { DEFAULT_CONFIG_PATH, getConfig, Config, JobQueue, KIND_ACTIVE, initClients, startGQLMetricsServer, createAndStartServer } from '@cerc-io/util';
+import { ServerCmd } from '@cerc-io/cli';
 
 import typeDefs from './schema';
-
 import { createResolvers as createMockResolvers } from './mock/resolvers';
 import { createResolvers } from './resolvers';
 import { Indexer } from './indexer';
@@ -24,57 +17,10 @@ import { EventWatcher } from './events';
 const log = debug('vulcanize:server');
 
 export const main = async (): Promise<any> => {
-  const argv = await yargs(hideBin(process.argv))
-    .option('f', {
-      alias: 'config-file',
-      demandOption: true,
-      describe: 'configuration file path (toml)',
-      type: 'string',
-      default: DEFAULT_CONFIG_PATH
-    })
-    .argv;
+  const serverCmd = new ServerCmd();
+  await serverCmd.init(Database, Indexer, EventWatcher);
 
-  const config: Config = await getConfig(argv.f);
-  const { ethClient, ethProvider } = await initClients(config);
-
-  const { kind: watcherKind } = config.server;
-
-  const db = new Database(config.database);
-  await db.init();
-
-  // 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
-  const pubsub = new PubSub();
-
-  const jobQueueConfig = config.jobQueue;
-  assert(jobQueueConfig, 'Missing job queue config');
-
-  const { dbConnectionString, maxCompletionLagInSecs } = jobQueueConfig;
-  assert(dbConnectionString, 'Missing job queue db connection string');
-
-  const jobQueue = new JobQueue({ dbConnectionString, maxCompletionLag: maxCompletionLagInSecs });
-
-  const indexer = new Indexer(config.server, db, { ethClient }, ethProvider, jobQueue);
-  await indexer.init();
-
-  const eventWatcher = new EventWatcher(ethClient, indexer, pubsub, jobQueue);
-
-  if (watcherKind === KIND_ACTIVE) {
-    await jobQueue.start();
-    // Delete jobs to prevent creating jobs after completion of processing previous block.
-    await jobQueue.deleteAllJobs();
-    await eventWatcher.start();
-  }
-
-  const resolvers = process.env.MOCK ? await createMockResolvers() : await createResolvers(indexer, eventWatcher);
-
-  // Create an Express app
-  const app: Application = express();
-  const server = createAndStartServer(app, typeDefs, resolvers, config.server);
-
-  startGQLMetricsServer(config);
-
-  return { app, server };
+  return process.env.MOCK ? serverCmd.exec(createMockResolvers, typeDefs) : serverCmd.exec(createResolvers, typeDefs);
 };
 
 main().then(() => {

packages/erc721-watcher/src/resolvers.ts

@@ -8,15 +8,16 @@ import debug from 'debug';
 import Decimal from 'decimal.js';
 import { GraphQLScalarType } from 'graphql';
 
-import { ValueResult, BlockHeight, getResultState } from '@cerc-io/util';
+import { ValueResult, BlockHeight, getResultState, IndexerInterface, EventWatcherInterface } from '@cerc-io/util';
 
 import { Indexer } from './indexer';
 import { EventWatcher } from './events';
 
 const log = debug('vulcanize:resolver');
 
-export const createResolvers = async (indexer: Indexer, eventWatcher: EventWatcher): Promise<any> => {
-  assert(indexer);
+export const createResolvers = async (indexerArg: IndexerInterface, eventWatcherArg: EventWatcherInterface): Promise<any> => {
+  const indexer = indexerArg as Indexer;
+  const eventWatcher = eventWatcherArg as EventWatcher;
 
   return {
     BigInt: new BigInt('bigInt'),

packages/erc721-watcher/src/server.ts

@@ -4,16 +4,11 @@
 
 import fs from 'fs';
 import path from 'path';
-import assert from 'assert';
 import 'reflect-metadata';
-import express, { Application } from 'express';
-import { PubSub } from 'graphql-subscriptions';
-import yargs from 'yargs';
-import { hideBin } from 'yargs/helpers';
 import debug from 'debug';
 import 'graphql-import-node';
 
-import { DEFAULT_CONFIG_PATH, getConfig, Config, JobQueue, KIND_ACTIVE, initClients, startGQLMetricsServer, createAndStartServer } from '@cerc-io/util';
+import { ServerCmd } from '@cerc-io/cli';
 
 import { createResolvers } from './resolvers';
 import { Indexer } from './indexer';
@@ -23,58 +18,12 @@ import { EventWatcher } from './events';
 const log = debug('vulcanize:server');
 
 export const main = async (): Promise<any> => {
-  const argv = await yargs(hideBin(process.argv))
-    .option('f', {
-      alias: 'config-file',
-      demandOption: true,
-      describe: 'configuration file path (toml)',
-      type: 'string',
-      default: DEFAULT_CONFIG_PATH
-    })
-    .argv;
+  const serverCmd = new ServerCmd();
+  await serverCmd.init(Database, Indexer, EventWatcher);
 
-  const config: Config = await getConfig(argv.f);
-  const { ethClient, ethProvider } = await initClients(config);
-
-  const { kind: watcherKind } = config.server;
-
-  const db = new Database(config.database);
-  await db.init();
-
-  // 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
-  const pubsub = new PubSub();
-
-  const jobQueueConfig = config.jobQueue;
-  assert(jobQueueConfig, 'Missing job queue config');
-
-  const { dbConnectionString, maxCompletionLagInSecs } = jobQueueConfig;
-  assert(dbConnectionString, 'Missing job queue db connection string');
-
-  const jobQueue = new JobQueue({ dbConnectionString, maxCompletionLag: maxCompletionLagInSecs });
-
-  const indexer = new Indexer(config.server, db, { ethClient }, ethProvider, jobQueue);
-  await indexer.init();
-
-  const eventWatcher = new EventWatcher(ethClient, indexer, pubsub, jobQueue);
-
-  if (watcherKind === KIND_ACTIVE) {
-    await jobQueue.start();
-    // Delete jobs to prevent creating jobs after completion of processing previous block.
-    await jobQueue.deleteAllJobs();
-    await eventWatcher.start();
-  }
-
-  const resolvers = await createResolvers(indexer, eventWatcher);
   const typeDefs = fs.readFileSync(path.join(__dirname, 'schema.gql')).toString();
 
-  // Create an Express app
-  const app: Application = express();
-  const server = createAndStartServer(app, typeDefs, resolvers, config.server);
-
-  startGQLMetricsServer(config);
-
-  return { app, server };
+  return serverCmd.exec(createResolvers, typeDefs);
 };
 
 main().then(() => {

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

@@ -24,6 +24,7 @@ import { Category } from './entity/Category';
 export const SUBGRAPH_ENTITIES = new Set([Author, Blog, Category]);
 export const ENTITIES = [_Test, GetMethod, ...SUBGRAPH_ENTITIES];
 export const ENTITY_TO_LATEST_ENTITY_MAP: Map<any, any> = new Map();
+export const ENTITY_QUERY_TYPE_MAP = new Map();
 
 export class Database implements DatabaseInterface {
   _config: ConnectionOptions;

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

@@ -8,7 +8,17 @@ import debug from 'debug';
 import Decimal from 'decimal.js';
 import { GraphQLResolveInfo, GraphQLScalarType } from 'graphql';
 
-import { ValueResult, BlockHeight, gqlTotalQueryCount, gqlQueryCount, jsonBigIntStringReplacer, getResultState, setGQLCacheHints } from '@cerc-io/util';
+import {
+  ValueResult,
+  BlockHeight,
+  gqlTotalQueryCount,
+  gqlQueryCount,
+  jsonBigIntStringReplacer,
+  getResultState,
+  setGQLCacheHints,
+  IndexerInterface,
+  EventWatcherInterface
+} from '@cerc-io/util';
 
 import { Indexer } from './indexer';
 import { EventWatcher } from './events';
@@ -19,8 +29,9 @@ import { Category } from './entity/Category';
 
 const log = debug('vulcanize:resolver');
 
-export const createResolvers = async (indexer: Indexer, eventWatcher: EventWatcher): Promise<any> => {
-  assert(indexer);
+export const createResolvers = async (indexerArg: IndexerInterface, eventWatcherArg: EventWatcherInterface): Promise<any> => {
+  const indexer = indexerArg as Indexer;
+  const eventWatcher = eventWatcherArg as EventWatcher;
 
   const gqlCacheConfig = indexer.serverConfig.gqlCache;
 

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

@@ -4,86 +4,26 @@
 
 import fs from 'fs';
 import path from 'path';
-import assert from 'assert';
 import 'reflect-metadata';
-import express, { Application } from 'express';
-import { PubSub } from 'graphql-subscriptions';
-import yargs from 'yargs';
-import { hideBin } from 'yargs/helpers';
 import debug from 'debug';
 import 'graphql-import-node';
 
-import { DEFAULT_CONFIG_PATH, getConfig, Config, JobQueue, KIND_ACTIVE, initClients, startGQLMetricsServer, createAndStartServer } from '@cerc-io/util';
-import { GraphWatcher, Database as GraphDatabase } from '@cerc-io/graph-node';
+import { ServerCmd } from '@cerc-io/cli';
 
 import { createResolvers } from './resolvers';
 import { Indexer } from './indexer';
-import { Database, ENTITY_TO_LATEST_ENTITY_MAP } from './database';
+import { Database, ENTITY_QUERY_TYPE_MAP, ENTITY_TO_LATEST_ENTITY_MAP } from './database';
 import { EventWatcher } from './events';
 
 const log = debug('vulcanize:server');
 
 export const main = async (): Promise<any> => {
-  const argv = await yargs(hideBin(process.argv))
-    .option('f', {
-      alias: 'config-file',
-      demandOption: true,
-      describe: 'configuration file path (toml)',
-      type: 'string',
-      default: DEFAULT_CONFIG_PATH
-    })
-    .argv;
+  const serverCmd = new ServerCmd();
+  await serverCmd.init(Database, Indexer, EventWatcher, ENTITY_QUERY_TYPE_MAP, ENTITY_TO_LATEST_ENTITY_MAP);
 
-  const config: Config = await getConfig(argv.f);
-  const { ethClient, ethProvider } = await initClients(config);
-
-  const { kind: watcherKind } = config.server;
-
-  const db = new Database(config.database);
-  await db.init();
-
-  const graphDb = new GraphDatabase(config.server, db.baseDatabase, ENTITY_TO_LATEST_ENTITY_MAP);
-  await graphDb.init();
-
-  const graphWatcher = new GraphWatcher(graphDb, ethClient, 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
-  const pubsub = new PubSub();
-
-  const jobQueueConfig = config.jobQueue;
-  assert(jobQueueConfig, 'Missing job queue config');
-
-  const { dbConnectionString, maxCompletionLagInSecs } = jobQueueConfig;
-  assert(dbConnectionString, 'Missing job queue db connection string');
-
-  const jobQueue = new JobQueue({ dbConnectionString, maxCompletionLag: maxCompletionLagInSecs });
-
-  const indexer = new Indexer(config.server, db, { ethClient }, ethProvider, jobQueue, graphWatcher);
-  await indexer.init();
-
-  graphWatcher.setIndexer(indexer);
-  await graphWatcher.init();
-
-  const eventWatcher = new EventWatcher(ethClient, indexer, pubsub, jobQueue);
-
-  if (watcherKind === KIND_ACTIVE) {
-    await jobQueue.start();
-    // Delete jobs to prevent creating jobs after completion of processing previous block.
-    await jobQueue.deleteAllJobs();
-    await eventWatcher.start();
-  }
-
-  const resolvers = await createResolvers(indexer, eventWatcher);
   const typeDefs = fs.readFileSync(path.join(__dirname, 'schema.gql')).toString();
 
-  // Create an Express app
-  const app: Application = express();
-  const server = createAndStartServer(app, typeDefs, resolvers, config.server);
-
-  startGQLMetricsServer(config);
-
-  return { app, server };
+  return serverCmd.exec(createResolvers, typeDefs);
 };
 
 main().then(() => {

packages/mobymask-watcher/src/resolvers.ts

@@ -8,15 +8,16 @@ import debug from 'debug';
 import Decimal from 'decimal.js';
 import { GraphQLScalarType } from 'graphql';
 
-import { ValueResult, gqlTotalQueryCount, gqlQueryCount, getResultState } from '@cerc-io/util';
+import { ValueResult, gqlTotalQueryCount, gqlQueryCount, getResultState, IndexerInterface, EventWatcherInterface } from '@cerc-io/util';
 
 import { Indexer } from './indexer';
 import { EventWatcher } from './events';
 
 const log = debug('vulcanize:resolver');
 
-export const createResolvers = async (indexer: Indexer, eventWatcher: EventWatcher): Promise<any> => {
-  assert(indexer);
+export const createResolvers = async (indexerArg: IndexerInterface, eventWatcherArg: EventWatcherInterface): Promise<any> => {
+  const indexer = indexerArg as Indexer;
+  const eventWatcher = eventWatcherArg as EventWatcher;
 
   return {
     BigInt: new BigInt('bigInt'),

packages/mobymask-watcher/src/server.ts

@@ -4,16 +4,11 @@
 
 import fs from 'fs';
 import path from 'path';
-import assert from 'assert';
 import 'reflect-metadata';
-import express, { Application } from 'express';
-import { PubSub } from 'graphql-subscriptions';
-import yargs from 'yargs';
-import { hideBin } from 'yargs/helpers';
 import debug from 'debug';
 import 'graphql-import-node';
 
-import { DEFAULT_CONFIG_PATH, getConfig, Config, JobQueue, KIND_ACTIVE, initClients, startGQLMetricsServer, createAndStartServer } from '@cerc-io/util';
+import { ServerCmd } from '@cerc-io/cli';
 
 import { createResolvers } from './resolvers';
 import { Indexer } from './indexer';
@@ -23,58 +18,12 @@ import { EventWatcher } from './events';
 const log = debug('vulcanize:server');
 
 export const main = async (): Promise<any> => {
-  const argv = await yargs(hideBin(process.argv))
-    .option('f', {
-      alias: 'config-file',
-      demandOption: true,
-      describe: 'configuration file path (toml)',
-      type: 'string',
-      default: DEFAULT_CONFIG_PATH
-    })
-    .argv;
+  const serverCmd = new ServerCmd();
+  await serverCmd.init(Database, Indexer, EventWatcher);
 
-  const config: Config = await getConfig(argv.f);
-  const { ethClient, ethProvider } = await initClients(config);
-
-  const { kind: watcherKind } = config.server;
-
-  const db = new Database(config.database);
-  await db.init();
-
-  // 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
-  const pubsub = new PubSub();
-
-  const jobQueueConfig = config.jobQueue;
-  assert(jobQueueConfig, 'Missing job queue config');
-
-  const { dbConnectionString, maxCompletionLagInSecs } = jobQueueConfig;
-  assert(dbConnectionString, 'Missing job queue db connection string');
-
-  const jobQueue = new JobQueue({ dbConnectionString, maxCompletionLag: maxCompletionLagInSecs });
-
-  const indexer = new Indexer(config.server, db, { ethClient }, ethProvider, jobQueue);
-  await indexer.init();
-
-  const eventWatcher = new EventWatcher(ethClient, indexer, pubsub, jobQueue);
-
-  if (watcherKind === KIND_ACTIVE) {
-    await jobQueue.start();
-    // Delete jobs to prevent creating jobs after completion of processing previous block.
-    await jobQueue.deleteAllJobs();
-    await eventWatcher.start();
-  }
-
-  const resolvers = await createResolvers(indexer, eventWatcher);
   const typeDefs = fs.readFileSync(path.join(__dirname, 'schema.gql')).toString();
 
-  // Create an Express app
-  const app: Application = express();
-  const server = createAndStartServer(app, typeDefs, resolvers, config.server);
-
-  startGQLMetricsServer(config);
-
-  return { app, server };
+  return serverCmd.exec(createResolvers, typeDefs);
 };
 
 main().then(() => {

packages/util/src/types.ts

@@ -135,6 +135,7 @@ export interface IndexerInterface {
 }
 
 export interface EventWatcherInterface {
+  start (): Promise<void>
   getBlockProgressEventIterator (): AsyncIterator<any>
   initBlockProcessingOnCompleteHandler (): Promise<void>
   initEventProcessingOnCompleteHandler (): Promise<void>