From e836efe6ee36ded27cec47eb54204535ee2b0215 Mon Sep 17 00:00:00 2001
From: Tate <yongzhao.tan@onfinality.io>
Date: Wed, 25 Sep 2024 10:03:03 +0000
Subject: [PATCH 1/7] Support subqery _metadata query

---
 CHANGELOG.md                             |   6 +
 package.json                             |   3 +
 src/config/graphile.config.ts            |   3 +
 src/config/yargs.ts                      |   5 +
 src/plugins/GetMetadataPlugin.ts         |   1 +
 src/plugins/GetSubqueryMetadataPlugin.ts | 214 +++++++++
 src/plugins/filter/utils.ts              |   2 +-
 src/utils/asyncInterval.ts               |  35 ++
 test/subgraph.test.ts                    |   7 +-
 yarn.lock                                | 566 ++++++++++++++++++++++-
 10 files changed, 835 insertions(+), 7 deletions(-)
 create mode 100644 src/plugins/GetSubqueryMetadataPlugin.ts
 create mode 100644 src/utils/asyncInterval.ts

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 363e3ce..7b82572 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Added
+- Support subqery _metadata query(#4)
+
+### Fixed
+- Bigint query type not match
+
 ## [0.1.0] - 2024-09-20
 ### Fixed
 - Package rename @subql/query-subgraph
diff --git a/package.json b/package.json
index 6a61644..f3d0f91 100644
--- a/package.json
+++ b/package.json
@@ -21,9 +21,11 @@
   },
   "dependencies": {
     "@graphile/simplify-inflection": "^8.0.0-beta.5",
+    "@subql/utils": "^2.14.0",
     "@types/yargs": "^17.0.33",
     "dotenv": "^16.4.5",
     "eslint": "^8.8.0",
+    "node-fetch": "^2.6.11",
     "postgraphile": "^5.0.0-beta.28",
     "yargs": "latest"
   },
@@ -33,6 +35,7 @@
     "@geut/chan": "^3.2.9",
     "@tsconfig/node20": "^20.1.4",
     "@types/jest": "^29.5.12",
+    "@types/node-fetch": "^2.6.11",
     "@typescript-eslint/eslint-plugin": "^5",
     "@typescript-eslint/parser": "5",
     "eslint-config-prettier": "^8.3.0",
diff --git a/src/config/graphile.config.ts b/src/config/graphile.config.ts
index df710a2..d334247 100644
--- a/src/config/graphile.config.ts
+++ b/src/config/graphile.config.ts
@@ -14,6 +14,7 @@ import { ArgFilterLogicalOperatorsPlugin } from '../plugins/filter/ArgFilterLogi
 import { ArgFilterPlugin } from '../plugins/filter/ArgFilterPlugin';
 import { OrderByAttributesPlugin } from '../plugins/filter/OrderByAttributesPlugin';
 import { CreateMetadataPlugin } from '../plugins/GetMetadataPlugin';
+import { CreateSubqueryMetadataPlugin } from '../plugins/GetSubqueryMetadataPlugin';
 import historicalPlugins from '../plugins/historical';
 import { OffsetToSkipPlugin } from '../plugins/OffsetToSkipPlugin';
 import { PgIdToNodeIdPlugin } from '../plugins/PgIdToNodeIdPlugin';
@@ -37,6 +38,7 @@ export function genPreset(args: ArgsInterface) {
 
   const SchemaSmartTagsPlugin = CreateSchemaSmartTagsPlugin(pgSchema);
   const metadataPlugin = CreateMetadataPlugin(pgSchema);
+  const subqueryMetadataPlugin = CreateSubqueryMetadataPlugin(pgSchema, args);
   const preset: GraphileConfig.Preset = {
     extends: [PostGraphileAmberPreset, PgSimplifyInflectionPreset],
     grafserv: { port: DEFAULT_PORT },
@@ -62,6 +64,7 @@ export function genPreset(args: ArgsInterface) {
       SchemaSmartTagsPlugin,
       ...historicalPlugins,
       metadataPlugin,
+      subqueryMetadataPlugin,
       PgRowByVirtualIdPlugin,
       PgIdToNodeIdPlugin,
       ArgFilterPlugin,
diff --git a/src/config/yargs.ts b/src/config/yargs.ts
index d21ca69..49b4a03 100644
--- a/src/config/yargs.ts
+++ b/src/config/yargs.ts
@@ -48,6 +48,11 @@ export const yargsOptions = {
     type: 'boolean',
     default: false,
   },
+  indexer: {
+    demandOption: false,
+    describe: 'Url that allows query to access indexer metadata',
+    type: 'string',
+  },
 } satisfies { [key: string]: Options };
 
 export type ArgsInterface = ArgumentsCamelCase<InferredOptionTypes<typeof yargsOptions>>;
diff --git a/src/plugins/GetMetadataPlugin.ts b/src/plugins/GetMetadataPlugin.ts
index dbe09fb..aabf892 100644
--- a/src/plugins/GetMetadataPlugin.ts
+++ b/src/plugins/GetMetadataPlugin.ts
@@ -29,6 +29,7 @@ type MetaEntry = { key: string; value: MetaType };
 
 export function CreateMetadataPlugin(schemaName: string) {
   return makeExtendSchemaPlugin((build) => {
+    // TODO Only handled the single-chain scenario, multi-chains may have unexpected results.
     const metadata = build.input.pgRegistry.pgResources._metadata;
 
     return {
diff --git a/src/plugins/GetSubqueryMetadataPlugin.ts b/src/plugins/GetSubqueryMetadataPlugin.ts
new file mode 100644
index 0000000..5edae2a
--- /dev/null
+++ b/src/plugins/GetSubqueryMetadataPlugin.ts
@@ -0,0 +1,214 @@
+// Copyright 2020-2024 SubQuery Pte Ltd authors & contributors
+// SPDX-License-Identifier: GPL-3.0
+
+import { URL } from 'url';
+import {
+  getMetadataTableName,
+  MetaData,
+  METADATA_REGEX,
+  MULTI_METADATA_REGEX,
+  TableEstimate,
+} from '@subql/utils';
+import { makeExtendSchemaPlugin, gql, ExtensionDefinition } from 'graphile-utils';
+import fetch, { Response } from 'node-fetch';
+import { PgClient, withPgClientTransaction } from 'postgraphile/@dataplan/pg';
+import { constant } from 'postgraphile/grafast';
+import { ArgsInterface } from '../config/yargs';
+
+const extensionsTypeDefs: ExtensionDefinition['typeDefs'] = gql`
+  type TableEstimate {
+    table: String
+    estimate: Int
+  }
+  type _Metadata {
+    lastProcessedHeight: Int
+    lastProcessedTimestamp: Date
+    targetHeight: Int
+    chain: String
+    specName: String
+    genesisHash: String
+    startHeight: Int
+    indexerHealthy: Boolean
+    indexerNodeVersion: String
+    queryNodeVersion: String
+    queryNodeStyle: String
+    rowCountEstimate: [TableEstimate]
+    dynamicDatasources: [JSON]
+    evmChainId: String
+    deployments: JSON
+    lastFinalizedVerifiedHeight: Int
+    unfinalizedBlocks: String
+    lastCreatedPoiHeight: Int
+    latestSyncedPoiHeight: Int
+    dbSize: BigInt
+  }
+  type _Metadatas {
+    totalCount: Int!
+    nodes: [_Metadata]!
+  }
+  extend type Query {
+    _metadata(chainId: String): _Metadata
+    _metadatas(after: Cursor, before: Cursor): _Metadatas
+  }
+`;
+type MetaType = number | string | boolean;
+type MetaEntry = { key: string; value: MetaType };
+type MetadatasConnection = {
+  totalCount?: number;
+  nodes?: MetaData[];
+};
+
+const { version: packageVersion } = require('../../package.json');
+const META_JSON_FIELDS = ['deployments'];
+
+// TODO Is it necessary to update the SDK util package?
+const metaCache = {
+  queryNodeVersion: packageVersion,
+  queryNodeStyle: 'subgraph',
+} as MetaData & { queryNodeStyle: 'subgraph' };
+
+async function fetchFromApi(argv: ArgsInterface): Promise<void> {
+  let health: Response;
+  let meta: Response;
+
+  const indexerUrl = argv.indexer;
+
+  try {
+    meta = await fetch(new URL(`meta`, indexerUrl));
+    const result = await meta.json();
+    Object.assign(metaCache, result);
+  } catch (e: any) {
+    metaCache.indexerHealthy = false;
+    console.warn(`Failed to fetch indexer meta, `, e.message);
+  }
+
+  try {
+    health = await fetch(new URL(`health`, indexerUrl));
+    metaCache.indexerHealthy = !!health.ok;
+  } catch (e: any) {
+    metaCache.indexerHealthy = false;
+    console.warn(`Failed to fetch indexer health, `, e.message);
+  }
+}
+
+function matchMetadataTableName(name: string): boolean {
+  return METADATA_REGEX.test(name) || MULTI_METADATA_REGEX.test(name);
+}
+
+async function getTableEstimate(schemaName: string, pgClient: PgClient) {
+  const { rows } = await pgClient.query<TableEstimate>({
+    text: `select relname as table , reltuples::bigint as estimate from pg_class
+        where 
+          relnamespace in (select oid from pg_namespace where nspname = $1)
+        and 
+          relname in (select table_name from information_schema.tables where table_schema = $1)`,
+    values: [schemaName],
+  });
+  return rows;
+}
+
+export function CreateSubqueryMetadataPlugin(schemaName: string, args: ArgsInterface) {
+  return makeExtendSchemaPlugin((build) => {
+    // Find all metadata table
+    const pgResources = build.input.pgRegistry.pgResources;
+    const metadataTables = Object.keys(build.input.pgRegistry.pgResources).filter((tableName) =>
+      matchMetadataTableName(tableName)
+    );
+    const metadataPgResource = metadataTables.reduce(
+      (result, key) => {
+        result[key] = pgResources[key];
+        return result;
+      },
+      {} as { [key: string]: (typeof pgResources)[keyof typeof pgResources] }
+    );
+
+    // TODO Is this feature necessary?
+    // if (args.indexer) {
+    //   setAsyncInterval(async () => await fetchFromApi(args), 10000);
+    // }
+
+    return {
+      typeDefs: extensionsTypeDefs,
+
+      plans: {
+        Query: {
+          _metadata($parent, { $chainId }, ...args) {
+            const totalCountInput = $parent.get('totalCount');
+            if ($chainId === undefined) {
+              return;
+            }
+
+            const chainId = $chainId.eval();
+            const metadataTableName = chainId ? getMetadataTableName(chainId) : '_metadata';
+            const $metadata = metadataPgResource[metadataTableName];
+            if (!$metadata) throw new Error(`Not Found Metadata, chainId: ${chainId}`);
+            const $metadataResult = withPgClientTransaction(
+              $metadata.executor,
+              $chainId,
+              async (pgClient, input) => {
+                const { rows } = await pgClient.query({
+                  text: `select value, key from "${schemaName}"."${metadataTableName}"`,
+                });
+                const result: any = {};
+                rows.forEach((item: any) => {
+                  if (META_JSON_FIELDS.includes(item.key)) {
+                    result[item.key] = JSON.parse(item.value);
+                  } else {
+                    result[item.key] = item.value;
+                  }
+                });
+
+                // TODO How to check if the field should be returned.
+                result.rowCountEstimate = await getTableEstimate(schemaName, pgClient);
+                result.queryNodeVersion = packageVersion;
+                result.queryNodeStyle = 'subgraph';
+                return result;
+              }
+            );
+
+            return $metadataResult;
+          },
+          _metadatas(_, $input) {
+            const totalCount = Object.keys(metadataPgResource).length;
+            const pgTable = metadataPgResource[metadataTables[0]];
+            if (!totalCount || !pgTable) {
+              return constant({ totalCount: 0, nodes: [] });
+            }
+
+            const $metadataResult = withPgClientTransaction(
+              pgTable.executor,
+              $input.getRaw(''),
+              async (pgClient, input): Promise<MetadatasConnection> => {
+                const nodes = await Promise.all(
+                  metadataTables.map(async (tableName) => {
+                    const { rows } = await pgClient.query({
+                      text: `select value, key from "${schemaName}"."${tableName}"`,
+                    });
+                    const result: any = {};
+                    rows.forEach((item: any) => {
+                      if (META_JSON_FIELDS.includes(item.key)) {
+                        result[item.key] = JSON.parse(item.value);
+                      } else {
+                        result[item.key] = item.value;
+                      }
+                    });
+
+                    // TODO How to check if the field should be returned.
+                    result.rowCountEstimate = await getTableEstimate(schemaName, pgClient);
+                    result.queryNodeVersion = packageVersion;
+                    result.queryNodeStyle = 'subgraph';
+                    return result;
+                  })
+                );
+
+                return { totalCount, nodes };
+              }
+            );
+
+            return $metadataResult;
+          },
+        },
+      },
+    };
+  });
+}
diff --git a/src/plugins/filter/utils.ts b/src/plugins/filter/utils.ts
index 114e535..f175604 100644
--- a/src/plugins/filter/utils.ts
+++ b/src/plugins/filter/utils.ts
@@ -105,11 +105,11 @@ export function ConvertGraphqlType(fieldType: string): GraphQLInputType | undefi
       return GraphQLString;
     case 'int2':
     case 'int4':
-    case 'int8':
     case 'float8':
     case 'float4':
     case 'numeric':
       return GraphQLFloat;
+    case 'int8':
     case 'timestamp':
       return GraphQLString;
     case 'varchar':
diff --git a/src/utils/asyncInterval.ts b/src/utils/asyncInterval.ts
new file mode 100644
index 0000000..daf84a3
--- /dev/null
+++ b/src/utils/asyncInterval.ts
@@ -0,0 +1,35 @@
+// Copyright 2020-2024 SubQuery Pte Ltd authors & contributors
+// SPDX-License-Identifier: GPL-3.0
+
+//improve util method from : https://dev.to/jsmccrumb/asynchronous-setinterval-4j69
+
+const asyncIntervals: { run: boolean; id: number | NodeJS.Timeout }[] = [];
+
+const runAsyncInterval = async (cb: any, interval: any, intervalIndex: any) => {
+  await cb();
+  if (asyncIntervals[intervalIndex].run) {
+    asyncIntervals[intervalIndex].id = setTimeout(
+      // eslint-disable-next-line @typescript-eslint/no-misused-promises
+      () => runAsyncInterval(cb, interval, intervalIndex),
+      interval
+    );
+  }
+};
+
+export const setAsyncInterval = (cb: any, interval: any) => {
+  if (cb && typeof cb === 'function') {
+    const intervalIndex = asyncIntervals.length;
+    asyncIntervals.push({ run: true, id: 0 });
+    runAsyncInterval(cb, interval, intervalIndex);
+    return intervalIndex;
+  } else {
+    throw new Error('Callback must be a function');
+  }
+};
+
+const clearAsyncInterval = (intervalIndex: any) => {
+  if (asyncIntervals[intervalIndex].run) {
+    clearTimeout(asyncIntervals[intervalIndex].id);
+    asyncIntervals[intervalIndex].run = false;
+  }
+};
diff --git a/test/subgraph.test.ts b/test/subgraph.test.ts
index 3224708..755bb3c 100644
--- a/test/subgraph.test.ts
+++ b/test/subgraph.test.ts
@@ -123,7 +123,7 @@ describe("subgraph plugin test", () => {
       queryExplain: true,
       queryTimeout: '3000',
     } as ArgsInterface);
-    
+
     apolloClient = new ApolloClient({ uri: 'http://localhost:3001/graphql', cache: new InMemoryCache() });
   });
 
@@ -489,4 +489,9 @@ describe("subgraph plugin test", () => {
       expect(fetchedMeta.accounts.length).toBe(2);
     });
   });
+
+  describe("subqery _metadata query", () => {
+    // TODO 
+
+  })
 });
diff --git a/yarn.lock b/yarn.lock
index d2a8d1a..bc4cafb 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1021,6 +1021,22 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@noble/curves@npm:^1.3.0":
+  version: 1.6.0
+  resolution: "@noble/curves@npm:1.6.0"
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+  languageName: node
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 "@nodelib/fs.scandir@npm:2.1.5":
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   resolution: "@nodelib/fs.scandir@npm:2.1.5"
@@ -1194,6 +1210,184 @@ __metadata:
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+"@polkadot/networks@npm:13.1.1":
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+  dependencies:
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+    "@polkadot/networks": 13.1.1
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+  version: 2.7.0
+  resolution: "pg-connection-string@npm:2.7.0"
+  checksum: 68015a8874b7ca5dad456445e4114af3d2602bac2fdb8069315ecad0ff9660ec93259b9af7186606529ac4f6f72a06831e6f20897a689b16cc7fda7ca0e247fd
+  languageName: node
+  linkType: hard
+
 "pg-connection-string@npm:^2.6.4":
   version: 2.6.4
   resolution: "pg-connection-string@npm:2.6.4"
@@ -6174,6 +6638,30 @@ __metadata:
   languageName: node
   linkType: hard
 
+"pino-std-serializers@npm:^3.1.0":
+  version: 3.2.0
+  resolution: "pino-std-serializers@npm:3.2.0"
+  checksum: 77e29675b116e42ae9fe6d4ef52ef3a082ffc54922b122d85935f93ddcc20277f0b0c873c5c6c5274a67b0409c672aaae3de6bcea10a2d84699718dda55ba95b
+  languageName: node
+  linkType: hard
+
+"pino@npm:^6.13.3":
+  version: 6.14.0
+  resolution: "pino@npm:6.14.0"
+  dependencies:
+    fast-redact: ^3.0.0
+    fast-safe-stringify: ^2.0.8
+    flatstr: ^1.0.12
+    pino-std-serializers: ^3.1.0
+    process-warning: ^1.0.0
+    quick-format-unescaped: ^4.0.3
+    sonic-boom: ^1.0.2
+  bin:
+    pino: bin.js
+  checksum: eb13e12e3a3d682abe4a4da426455a9f4e041e55e4fa57d72d9677ee8d188a9c952f69347e728a3761c8262cdce76ef24bee29e1a53ab15aa9c5e851099163d0
+  languageName: node
+  linkType: hard
+
 "pirates@npm:^4.0.4":
   version: 4.0.6
   resolution: "pirates@npm:4.0.6"
@@ -6389,6 +6877,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"process-warning@npm:^1.0.0":
+  version: 1.0.0
+  resolution: "process-warning@npm:1.0.0"
+  checksum: c708a03241deec3cabaeee39c4f9ee8c4d71f1c5ef9b746c8252cdb952a6059068cfcdaf348399775244cbc441b6ae5e26a9c87ed371f88335d84f26d19180f9
+  languageName: node
+  linkType: hard
+
 "promise-retry@npm:^2.0.1":
   version: 2.0.1
   resolution: "promise-retry@npm:2.0.1"
@@ -6476,6 +6971,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"quick-format-unescaped@npm:^4.0.3":
+  version: 4.0.4
+  resolution: "quick-format-unescaped@npm:4.0.4"
+  checksum: 7bc32b99354a1aa46c089d2a82b63489961002bb1d654cee3e6d2d8778197b68c2d854fd23d8422436ee1fdfd0abaddc4d4da120afe700ade68bd357815b26fd
+  languageName: node
+  linkType: hard
+
 "react-is@npm:^16.13.1, react-is@npm:^16.7.0":
   version: 16.13.1
   resolution: "react-is@npm:16.13.1"
@@ -6607,6 +7109,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"retry-as-promised@npm:^7.0.3":
+  version: 7.0.4
+  resolution: "retry-as-promised@npm:7.0.4"
+  checksum: 2b0dcddb06649d42b1384ec1f933c7cb4461939c28004460b0c4be0c8ae16cabaed2411aa5d46e734a320f33f4a1d480078a19b97c743c754bd32e896b3f8ea2
+  languageName: node
+  linkType: hard
+
 "retry@npm:^0.12.0":
   version: 0.12.0
   resolution: "retry@npm:0.12.0"
@@ -6639,6 +7148,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"rotating-file-stream@npm:^3.2.3":
+  version: 3.2.5
+  resolution: "rotating-file-stream@npm:3.2.5"
+  checksum: 9b0975afc580a1551984095a0edf840d29c271fc3e619224b477fa62bcf28d24342dc04ba9317d2395d13078aecfd6c65d36f97f4adb97f89797e1bd80244bd9
+  languageName: node
+  linkType: hard
+
 "run-parallel@npm:^1.1.9":
   version: 1.2.0
   resolution: "run-parallel@npm:1.2.0"
@@ -6722,6 +7238,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"sequelize-pool@npm:^7.1.0":
+  version: 7.1.0
+  resolution: "sequelize-pool@npm:7.1.0"
+  checksum: b11d06d02de9e8fc428ba3020b86f05fe7adad764e57f23c5901f924e31867901a5e7a090180337dc3b90de3934b64f34ae552fde37b0f3d37b09c0c8ecbddc7
+  languageName: node
+  linkType: hard
+
 "set-function-length@npm:^1.2.1":
   version: 1.2.2
   resolution: "set-function-length@npm:1.2.2"
@@ -6863,6 +7386,16 @@ __metadata:
   languageName: node
   linkType: hard
 
+"sonic-boom@npm:^1.0.2":
+  version: 1.4.1
+  resolution: "sonic-boom@npm:1.4.1"
+  dependencies:
+    atomic-sleep: ^1.0.0
+    flatstr: ^1.0.12
+  checksum: 189fa8fe5c2dc05d3513fc1a4926a2f16f132fa6fa0b511745a436010cdcd9c1d3b3cb6a9d7c05bd32a965dc77673a5ac0eb0992e920bdedd16330d95323124f
+  languageName: node
+  linkType: hard
+
 "source-map-support@npm:0.5.13":
   version: 0.5.13
   resolution: "source-map-support@npm:0.5.13"
@@ -7213,6 +7746,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"toposort-class@npm:^1.0.1":
+  version: 1.0.1
+  resolution: "toposort-class@npm:1.0.1"
+  checksum: c5e3229d4899b23350b09ed26cfb7a28aadd0889550625f1bcadc0da266cdf2790fb0ccc3e92be93ba6ad64f57bc2fd1ab94446cb4ae83054dab263753157f5f
+  languageName: node
+  linkType: hard
+
 "tr46@npm:~0.0.3":
   version: 0.0.3
   resolution: "tr46@npm:0.0.3"
@@ -7330,7 +7870,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"tslib@npm:^2.1.0, tslib@npm:^2.6.2":
+"tslib@npm:^2.1.0, tslib@npm:^2.6.2, tslib@npm:^2.7.0":
   version: 2.7.0
   resolution: "tslib@npm:2.7.0"
   checksum: 1606d5c89f88d466889def78653f3aab0f88692e80bb2066d090ca6112ae250ec1cfa9dbfaab0d17b60da15a4186e8ec4d893801c67896b277c17374e36e1d28
@@ -7694,6 +8234,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"validator@npm:^13.7.0":
+  version: 13.12.0
+  resolution: "validator@npm:13.12.0"
+  checksum: fb8f070724770b1449ea1a968605823fdb112dbd10507b2802f8841cda3e7b5c376c40f18c84e6a7b59de320a06177e471554101a85f1fa8a70bac1a84e48adf
+  languageName: node
+  linkType: hard
+
 "vfile-message@npm:^2.0.0":
   version: 2.0.4
   resolution: "vfile-message@npm:2.0.4"
@@ -7799,6 +8346,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"wkx@npm:^0.5.0":
+  version: 0.5.0
+  resolution: "wkx@npm:0.5.0"
+  dependencies:
+    "@types/node": "*"
+  checksum: 47b27387de81fbd077528c1c11be996bf5a6dbeb94858ea0e2fa6619c2af626aa2f127f6fee1b4b57057a7cbef8a810b39a67815f2eb54ed33b1790e29db86ee
+  languageName: node
+  linkType: hard
+
 "word-wrap@npm:^1.2.5":
   version: 1.2.5
   resolution: "word-wrap@npm:1.2.5"

From d574efd40d4f09d2cafcbcb4ca4fa1bfc3b0feb4 Mon Sep 17 00:00:00 2001
From: Tate <yongzhao.tan@onfinality.io>
Date: Thu, 26 Sep 2024 03:35:31 +0000
Subject: [PATCH 2/7] remove index flag

---
 package.json                             |  2 -
 src/config/yargs.ts                      |  5 --
 src/plugins/GetSubqueryMetadataPlugin.ts | 60 +++++-----------------
 src/utils/asyncInterval.ts               | 35 -------------
 yarn.lock                                | 64 +-----------------------
 5 files changed, 13 insertions(+), 153 deletions(-)
 delete mode 100644 src/utils/asyncInterval.ts

diff --git a/package.json b/package.json
index f3d0f91..7f00e6a 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,6 @@
     "@types/yargs": "^17.0.33",
     "dotenv": "^16.4.5",
     "eslint": "^8.8.0",
-    "node-fetch": "^2.6.11",
     "postgraphile": "^5.0.0-beta.28",
     "yargs": "latest"
   },
@@ -35,7 +34,6 @@
     "@geut/chan": "^3.2.9",
     "@tsconfig/node20": "^20.1.4",
     "@types/jest": "^29.5.12",
-    "@types/node-fetch": "^2.6.11",
     "@typescript-eslint/eslint-plugin": "^5",
     "@typescript-eslint/parser": "5",
     "eslint-config-prettier": "^8.3.0",
diff --git a/src/config/yargs.ts b/src/config/yargs.ts
index 49b4a03..d21ca69 100644
--- a/src/config/yargs.ts
+++ b/src/config/yargs.ts
@@ -48,11 +48,6 @@ export const yargsOptions = {
     type: 'boolean',
     default: false,
   },
-  indexer: {
-    demandOption: false,
-    describe: 'Url that allows query to access indexer metadata',
-    type: 'string',
-  },
 } satisfies { [key: string]: Options };
 
 export type ArgsInterface = ArgumentsCamelCase<InferredOptionTypes<typeof yargsOptions>>;
diff --git a/src/plugins/GetSubqueryMetadataPlugin.ts b/src/plugins/GetSubqueryMetadataPlugin.ts
index 5edae2a..e0da08b 100644
--- a/src/plugins/GetSubqueryMetadataPlugin.ts
+++ b/src/plugins/GetSubqueryMetadataPlugin.ts
@@ -10,7 +10,6 @@ import {
   TableEstimate,
 } from '@subql/utils';
 import { makeExtendSchemaPlugin, gql, ExtensionDefinition } from 'graphile-utils';
-import fetch, { Response } from 'node-fetch';
 import { PgClient, withPgClientTransaction } from 'postgraphile/@dataplan/pg';
 import { constant } from 'postgraphile/grafast';
 import { ArgsInterface } from '../config/yargs';
@@ -55,42 +54,12 @@ type MetaType = number | string | boolean;
 type MetaEntry = { key: string; value: MetaType };
 type MetadatasConnection = {
   totalCount?: number;
-  nodes?: MetaData[];
+  nodes?: Partial<MetaData>[];
 };
 
 const { version: packageVersion } = require('../../package.json');
 const META_JSON_FIELDS = ['deployments'];
 
-// TODO Is it necessary to update the SDK util package?
-const metaCache = {
-  queryNodeVersion: packageVersion,
-  queryNodeStyle: 'subgraph',
-} as MetaData & { queryNodeStyle: 'subgraph' };
-
-async function fetchFromApi(argv: ArgsInterface): Promise<void> {
-  let health: Response;
-  let meta: Response;
-
-  const indexerUrl = argv.indexer;
-
-  try {
-    meta = await fetch(new URL(`meta`, indexerUrl));
-    const result = await meta.json();
-    Object.assign(metaCache, result);
-  } catch (e: any) {
-    metaCache.indexerHealthy = false;
-    console.warn(`Failed to fetch indexer meta, `, e.message);
-  }
-
-  try {
-    health = await fetch(new URL(`health`, indexerUrl));
-    metaCache.indexerHealthy = !!health.ok;
-  } catch (e: any) {
-    metaCache.indexerHealthy = false;
-    console.warn(`Failed to fetch indexer health, `, e.message);
-  }
-}
-
 function matchMetadataTableName(name: string): boolean {
   return METADATA_REGEX.test(name) || MULTI_METADATA_REGEX.test(name);
 }
@@ -122,11 +91,6 @@ export function CreateSubqueryMetadataPlugin(schemaName: string, args: ArgsInter
       {} as { [key: string]: (typeof pgResources)[keyof typeof pgResources] }
     );
 
-    // TODO Is this feature necessary?
-    // if (args.indexer) {
-    //   setAsyncInterval(async () => await fetchFromApi(args), 10000);
-    // }
-
     return {
       typeDefs: extensionsTypeDefs,
 
@@ -145,21 +109,21 @@ export function CreateSubqueryMetadataPlugin(schemaName: string, args: ArgsInter
             const $metadataResult = withPgClientTransaction(
               $metadata.executor,
               $chainId,
-              async (pgClient, input) => {
-                const { rows } = await pgClient.query({
+              async (pgClient, input): Promise<Partial<MetaData>> => {
+                const rowCountEstimate = await getTableEstimate(schemaName, pgClient);
+                const { rows } = await pgClient.query<MetaEntry>({
                   text: `select value, key from "${schemaName}"."${metadataTableName}"`,
                 });
-                const result: any = {};
-                rows.forEach((item: any) => {
+                const result: Record<string, unknown> = {};
+                rows.forEach((item) => {
                   if (META_JSON_FIELDS.includes(item.key)) {
-                    result[item.key] = JSON.parse(item.value);
+                    result[item.key] = JSON.parse(item.value as string);
                   } else {
                     result[item.key] = item.value;
                   }
                 });
 
-                // TODO How to check if the field should be returned.
-                result.rowCountEstimate = await getTableEstimate(schemaName, pgClient);
+                result.rowCountEstimate = rowCountEstimate;
                 result.queryNodeVersion = packageVersion;
                 result.queryNodeStyle = 'subgraph';
                 return result;
@@ -179,12 +143,13 @@ export function CreateSubqueryMetadataPlugin(schemaName: string, args: ArgsInter
               pgTable.executor,
               $input.getRaw(''),
               async (pgClient, input): Promise<MetadatasConnection> => {
+                const rowCountEstimate = await getTableEstimate(schemaName, pgClient);
                 const nodes = await Promise.all(
-                  metadataTables.map(async (tableName) => {
+                  metadataTables.map(async (tableName): Promise<Partial<MetaData>> => {
                     const { rows } = await pgClient.query({
                       text: `select value, key from "${schemaName}"."${tableName}"`,
                     });
-                    const result: any = {};
+                    const result: Record<string, unknown> = {};
                     rows.forEach((item: any) => {
                       if (META_JSON_FIELDS.includes(item.key)) {
                         result[item.key] = JSON.parse(item.value);
@@ -193,8 +158,7 @@ export function CreateSubqueryMetadataPlugin(schemaName: string, args: ArgsInter
                       }
                     });
 
-                    // TODO How to check if the field should be returned.
-                    result.rowCountEstimate = await getTableEstimate(schemaName, pgClient);
+                    result.rowCountEstimate = rowCountEstimate;
                     result.queryNodeVersion = packageVersion;
                     result.queryNodeStyle = 'subgraph';
                     return result;
diff --git a/src/utils/asyncInterval.ts b/src/utils/asyncInterval.ts
deleted file mode 100644
index daf84a3..0000000
--- a/src/utils/asyncInterval.ts
+++ /dev/null
@@ -1,35 +0,0 @@
-// Copyright 2020-2024 SubQuery Pte Ltd authors & contributors
-// SPDX-License-Identifier: GPL-3.0
-
-//improve util method from : https://dev.to/jsmccrumb/asynchronous-setinterval-4j69
-
-const asyncIntervals: { run: boolean; id: number | NodeJS.Timeout }[] = [];
-
-const runAsyncInterval = async (cb: any, interval: any, intervalIndex: any) => {
-  await cb();
-  if (asyncIntervals[intervalIndex].run) {
-    asyncIntervals[intervalIndex].id = setTimeout(
-      // eslint-disable-next-line @typescript-eslint/no-misused-promises
-      () => runAsyncInterval(cb, interval, intervalIndex),
-      interval
-    );
-  }
-};
-
-export const setAsyncInterval = (cb: any, interval: any) => {
-  if (cb && typeof cb === 'function') {
-    const intervalIndex = asyncIntervals.length;
-    asyncIntervals.push({ run: true, id: 0 });
-    runAsyncInterval(cb, interval, intervalIndex);
-    return intervalIndex;
-  } else {
-    throw new Error('Callback must be a function');
-  }
-};
-
-const clearAsyncInterval = (intervalIndex: any) => {
-  if (asyncIntervals[intervalIndex].run) {
-    clearTimeout(asyncIntervals[intervalIndex].id);
-    asyncIntervals[intervalIndex].run = false;
-  }
-};
diff --git a/yarn.lock b/yarn.lock
index bc4cafb..c18c8cb 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1438,7 +1438,6 @@ __metadata:
     "@subql/utils": ^2.14.0
     "@tsconfig/node20": ^20.1.4
     "@types/jest": ^29.5.12
-    "@types/node-fetch": ^2.6.11
     "@types/yargs": ^17.0.33
     "@typescript-eslint/eslint-plugin": ^5
     "@typescript-eslint/parser": 5
@@ -1452,7 +1451,6 @@ __metadata:
     husky: ^9.1.5
     jest: ^29.7.0
     lint-staged: ^15.2.7
-    node-fetch: ^2.6.11
     postgraphile: ^5.0.0-beta.28
     prettier: ^3.3.3
     pretty-quick: ^4.0.0
@@ -1711,16 +1709,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@types/node-fetch@npm:^2.6.11":
-  version: 2.6.11
-  resolution: "@types/node-fetch@npm:2.6.11"
-  dependencies:
-    "@types/node": "*"
-    form-data: ^4.0.0
-  checksum: 180e4d44c432839bdf8a25251ef8c47d51e37355ddd78c64695225de8bc5dc2b50b7bb855956d471c026bb84bd7295688a0960085e7158cbbba803053492568b
-  languageName: node
-  linkType: hard
-
 "@types/node@npm:*":
   version: 22.5.4
   resolution: "@types/node@npm:22.5.4"
@@ -2224,13 +2212,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"asynckit@npm:^0.4.0":
-  version: 0.4.0
-  resolution: "asynckit@npm:0.4.0"
-  checksum: 7b78c451df768adba04e2d02e63e2d0bf3b07adcd6e42b4cf665cb7ce899bedd344c69a1dcbce355b5f972d597b25aaa1c1742b52cffd9caccb22f348114f6be
-  languageName: node
-  linkType: hard
-
 "atomic-sleep@npm:^1.0.0":
   version: 1.0.0
   resolution: "atomic-sleep@npm:1.0.0"
@@ -2686,15 +2667,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"combined-stream@npm:^1.0.8":
-  version: 1.0.8
-  resolution: "combined-stream@npm:1.0.8"
-  dependencies:
-    delayed-stream: ~1.0.0
-  checksum: 49fa4aeb4916567e33ea81d088f6584749fc90c7abec76fd516bf1c5aa5c79f3584b5ba3de6b86d26ddd64bae5329c4c7479343250cfe71c75bb366eae53bb7c
-  languageName: node
-  linkType: hard
-
 "commander@npm:~12.1.0":
   version: 12.1.0
   resolution: "commander@npm:12.1.0"
@@ -2874,13 +2846,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"delayed-stream@npm:~1.0.0":
-  version: 1.0.0
-  resolution: "delayed-stream@npm:1.0.0"
-  checksum: 46fe6e83e2cb1d85ba50bd52803c68be9bd953282fa7096f51fc29edd5d67ff84ff753c51966061e5ba7cb5e47ef6d36a91924eddb7f3f3483b1c560f77a0020
-  languageName: node
-  linkType: hard
-
 "deprecation@npm:^2.0.0, deprecation@npm:^2.3.1":
   version: 2.3.1
   resolution: "deprecation@npm:2.3.1"
@@ -3727,17 +3692,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"form-data@npm:^4.0.0":
-  version: 4.0.0
-  resolution: "form-data@npm:4.0.0"
-  dependencies:
-    asynckit: ^0.4.0
-    combined-stream: ^1.0.8
-    mime-types: ^2.1.12
-  checksum: 01135bf8675f9d5c61ff18e2e2932f719ca4de964e3be90ef4c36aacfc7b9cb2fceb5eca0b7e0190e3383fe51c5b37f4cb80b62ca06a99aaabfcfd6ac7c9328c
-  languageName: node
-  linkType: hard
-
 "fs-minipass@npm:^2.0.0":
   version: 2.1.0
   resolution: "fs-minipass@npm:2.1.0"
@@ -5792,22 +5746,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"mime-db@npm:1.52.0":
-  version: 1.52.0
-  resolution: "mime-db@npm:1.52.0"
-  checksum: 0d99a03585f8b39d68182803b12ac601d9c01abfa28ec56204fa330bc9f3d1c5e14beb049bafadb3dbdf646dfb94b87e24d4ec7b31b7279ef906a8ea9b6a513f
-  languageName: node
-  linkType: hard
-
-"mime-types@npm:^2.1.12":
-  version: 2.1.35
-  resolution: "mime-types@npm:2.1.35"
-  dependencies:
-    mime-db: 1.52.0
-  checksum: 89a5b7f1def9f3af5dad6496c5ed50191ae4331cc5389d7c521c8ad28d5fdad2d06fd81baf38fed813dc4e46bb55c8145bb0ff406330818c9cf712fb2e9b3836
-  languageName: node
-  linkType: hard
-
 "mimic-fn@npm:^2.1.0":
   version: 2.1.0
   resolution: "mimic-fn@npm:2.1.0"
@@ -6016,7 +5954,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"node-fetch@npm:^2.6.11, node-fetch@npm:^2.6.7":
+"node-fetch@npm:^2.6.7":
   version: 2.7.0
   resolution: "node-fetch@npm:2.7.0"
   dependencies:

From 00f1412ea61cc508226fc964c68008129a8f95e1 Mon Sep 17 00:00:00 2001
From: Tate <yongzhao.tan@onfinality.io>
Date: Thu, 26 Sep 2024 08:30:09 +0000
Subject: [PATCH 3/7] unit test

---
 test/subgraph.test.ts | 74 +++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 72 insertions(+), 2 deletions(-)

diff --git a/test/subgraph.test.ts b/test/subgraph.test.ts
index 755bb3c..e499821 100644
--- a/test/subgraph.test.ts
+++ b/test/subgraph.test.ts
@@ -124,7 +124,7 @@ describe("subgraph plugin test", () => {
       queryTimeout: '3000',
     } as ArgsInterface);
 
-    apolloClient = new ApolloClient({ uri: 'http://localhost:3001/graphql', cache: new InMemoryCache() });
+    apolloClient = new ApolloClient({ uri: 'http://localhost:3001/graphql', cache: new InMemoryCache({ addTypename: false }) });
   });
 
   afterAll(async () => {
@@ -491,7 +491,77 @@ describe("subgraph plugin test", () => {
   });
 
   describe("subqery _metadata query", () => {
-    // TODO 
+    it("block height", async () => {
+      const results = await graphqlQuery(gql`
+        query MyQuery {
+          _metadata {
+            lastProcessedHeight
+            lastProcessedTimestamp
+            targetHeight
+            chain
+            specName
+            genesisHash
+            startHeight
+            indexerHealthy
+            indexerNodeVersion
+            queryNodeVersion
+            evmChainId
+            deployments
+            lastFinalizedVerifiedHeight
+            unfinalizedBlocks
+            lastCreatedPoiHeight
+            latestSyncedPoiHeight
+            dbSize
+            queryNodeStyle
+            dynamicDatasources
+            rowCountEstimate {
+              estimate
+              table
+            }
+          }
+        }
+      `);
+      const fetchedMeta = results.data;
+      expect(fetchedMeta).toEqual({
+        _metadata: {
+          "chain": "Polkadot",
+          "dbSize": null,
+          "deployments": {
+            "1": "/polkadot-test",
+          },
+          "dynamicDatasources": [],
+          "evmChainId": null,
+          "genesisHash": "0x91b171bb158e2d3848fa23a9f1c25182fb8e20313b2c1eb49219da7a70ce90c3",
+          "indexerHealthy": true,
+          "indexerNodeVersion": "5.2.2",
+          "lastCreatedPoiHeight": null,
+          "lastFinalizedVerifiedHeight": null,
+          "lastProcessedHeight": 1205725,
+          "lastProcessedTimestamp": "1725960100839",
+          "latestSyncedPoiHeight": null,
+          "queryNodeStyle": "subgraph",
+          "queryNodeVersion": "0.1.0",
+          "specName": "polkadot",
+          "startHeight": 1,
+          "targetHeight": 22472571,
+          "unfinalizedBlocks": null,
+          "rowCountEstimate": [
+            {
+              "estimate": -1,
+              "table": "transfers",
+            },
+            {
+              "estimate": -1,
+              "table": "accounts",
+            },
+            {
+              "estimate": -1,
+              "table": "_metadata",
+            },
+          ],
+        }
+      });
+    });
 
   })
 });

From bdab6d2ce513bd995683a86e719256b7d6d6a42b Mon Sep 17 00:00:00 2001
From: Tate <yongzhao.tan@onfinality.io>
Date: Sun, 29 Sep 2024 04:16:05 +0000
Subject: [PATCH 4/7] GraphiQL control flag

---
 CHANGELOG.md                  | 1 +
 src/config/graphile.config.ts | 7 ++++++-
 src/config/yargs.ts           | 1 +
 3 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7b82572..78286ab 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 - Support subqery _metadata query(#4)
+- GraphiQL control flag - `playground`
 
 ### Fixed
 - Bigint query type not match
diff --git a/src/config/graphile.config.ts b/src/config/graphile.config.ts
index d334247..beddf13 100644
--- a/src/config/graphile.config.ts
+++ b/src/config/graphile.config.ts
@@ -41,7 +41,12 @@ export function genPreset(args: ArgsInterface) {
   const subqueryMetadataPlugin = CreateSubqueryMetadataPlugin(pgSchema, args);
   const preset: GraphileConfig.Preset = {
     extends: [PostGraphileAmberPreset, PgSimplifyInflectionPreset],
-    grafserv: { port: DEFAULT_PORT },
+    grafserv: {
+      port: DEFAULT_PORT,
+      graphiql: args.playground,
+      graphiqlOnGraphQLGET: false,
+      graphqlPath: '/',
+    },
     pgServices: [
       makePgService({
         connectionString: pgConnection,
diff --git a/src/config/yargs.ts b/src/config/yargs.ts
index d21ca69..2ff92d8 100644
--- a/src/config/yargs.ts
+++ b/src/config/yargs.ts
@@ -28,6 +28,7 @@ export const yargsOptions = {
     demandOption: false,
     describe: 'Enable graphql playground',
     type: 'boolean',
+    default: false,
   },
   // TODO
   'query-limit': {

From 1ea57d9a5baba0f8311abc3e3e1feb455ed92072 Mon Sep 17 00:00:00 2001
From: Tate <yongzhao.tan@onfinality.io>
Date: Wed, 9 Oct 2024 10:00:37 +0000
Subject: [PATCH 5/7] set  graphiqlPath

---
 src/config/graphile.config.ts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/config/graphile.config.ts b/src/config/graphile.config.ts
index beddf13..0f4f091 100644
--- a/src/config/graphile.config.ts
+++ b/src/config/graphile.config.ts
@@ -44,6 +44,7 @@ export function genPreset(args: ArgsInterface) {
     grafserv: {
       port: DEFAULT_PORT,
       graphiql: args.playground,
+      graphiqlPath: '/graphiql',
       graphiqlOnGraphQLGET: false,
       graphqlPath: '/',
     },

From da09cf01c9aa204431dc8cb5f9af1b0f2c6ae3be Mon Sep 17 00:00:00 2001
From: Tate <yongzhao.tan@onfinality.io>
Date: Thu, 10 Oct 2024 01:52:18 +0000
Subject: [PATCH 6/7] health check api

---
 package.json  |   2 +
 src/server.ts |  19 +-
 yarn.lock     | 525 +++++++++++++++++++++++++++++++++++++++++++++++++-
 3 files changed, 537 insertions(+), 9 deletions(-)

diff --git a/package.json b/package.json
index 7f00e6a..6158062 100644
--- a/package.json
+++ b/package.json
@@ -25,6 +25,7 @@
     "@types/yargs": "^17.0.33",
     "dotenv": "^16.4.5",
     "eslint": "^8.8.0",
+    "express": "^4.21.1",
     "postgraphile": "^5.0.0-beta.28",
     "yargs": "latest"
   },
@@ -33,6 +34,7 @@
     "@apollo/client": "3.0.0",
     "@geut/chan": "^3.2.9",
     "@tsconfig/node20": "^20.1.4",
+    "@types/express": "^4",
     "@types/jest": "^29.5.12",
     "@typescript-eslint/eslint-plugin": "^5",
     "@typescript-eslint/parser": "5",
diff --git a/src/server.ts b/src/server.ts
index 02417a1..c10899e 100644
--- a/src/server.ts
+++ b/src/server.ts
@@ -2,8 +2,10 @@
 // SPDX-License-Identifier: GPL-3.0
 
 import { createServer } from 'node:http';
+import express from 'express';
+import { grafserv } from 'grafserv/express/v4';
 import { postgraphile } from 'postgraphile';
-import { grafserv } from 'postgraphile/grafserv/node';
+// import { grafserv } from 'postgraphile/grafserv/node';
 import { genPreset, ArgsInterface } from './config/index';
 
 export function startServer(args: ArgsInterface) {
@@ -11,12 +13,23 @@ export function startServer(args: ArgsInterface) {
   const pgl = postgraphile(preset);
   const serv = pgl.createServ(grafserv);
 
-  const server = createServer();
+  const app = express();
+  app.use((req, res, next) => {
+    console.log(req.url);
+    if (req.url === '/.well-known/apollo/server-health') {
+      res.setHeader('Content-Type', 'application/health+json');
+      res.end('{"status":"pass"}');
+      return;
+    }
+    next();
+  });
+  const server = createServer(app);
+
   server.on('error', (e) => {
     console.error(e);
   });
 
-  serv.addTo(server).catch((e) => {
+  serv.addTo(app, server).catch((e) => {
     console.error(e);
     process.exit(1);
   });
diff --git a/yarn.lock b/yarn.lock
index c18c8cb..05dfcdd 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1437,6 +1437,7 @@ __metadata:
     "@graphile/simplify-inflection": ^8.0.0-beta.5
     "@subql/utils": ^2.14.0
     "@tsconfig/node20": ^20.1.4
+    "@types/express": ^4
     "@types/jest": ^29.5.12
     "@types/yargs": ^17.0.33
     "@typescript-eslint/eslint-plugin": ^5
@@ -1448,6 +1449,7 @@ __metadata:
     eslint-plugin-import: ^2.25.4
     eslint-plugin-prettier: ^5.1.3
     eslint-plugin-sort-destructure-keys: ^1.4.0
+    express: ^4.21.1
     husky: ^9.1.5
     jest: ^29.7.0
     lint-staged: ^15.2.7
@@ -1617,6 +1619,25 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@types/body-parser@npm:*":
+  version: 1.19.5
+  resolution: "@types/body-parser@npm:1.19.5"
+  dependencies:
+    "@types/connect": "*"
+    "@types/node": "*"
+  checksum: 1e251118c4b2f61029cc43b0dc028495f2d1957fe8ee49a707fb940f86a9bd2f9754230805598278fe99958b49e9b7e66eec8ef6a50ab5c1f6b93e1ba2aaba82
+  languageName: node
+  linkType: hard
+
+"@types/connect@npm:*":
+  version: 3.4.38
+  resolution: "@types/connect@npm:3.4.38"
+  dependencies:
+    "@types/node": "*"
+  checksum: 7eb1bc5342a9604facd57598a6c62621e244822442976c443efb84ff745246b10d06e8b309b6e80130026a396f19bf6793b7cecd7380169f369dac3bfc46fb99
+  languageName: node
+  linkType: hard
+
 "@types/debug@npm:^4.1.7":
   version: 4.1.12
   resolution: "@types/debug@npm:4.1.12"
@@ -1626,6 +1647,30 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@types/express-serve-static-core@npm:^4.17.33":
+  version: 4.19.6
+  resolution: "@types/express-serve-static-core@npm:4.19.6"
+  dependencies:
+    "@types/node": "*"
+    "@types/qs": "*"
+    "@types/range-parser": "*"
+    "@types/send": "*"
+  checksum: b0576eddc2d25ccdf10e68ba09598b87a4d7b2ad04a81dc847cb39fe56beb0b6a5cc017b1e00aa0060cb3b38e700384ce96d291a116a0f1e54895564a104aae9
+  languageName: node
+  linkType: hard
+
+"@types/express@npm:^4":
+  version: 4.17.21
+  resolution: "@types/express@npm:4.17.21"
+  dependencies:
+    "@types/body-parser": "*"
+    "@types/express-serve-static-core": ^4.17.33
+    "@types/qs": "*"
+    "@types/serve-static": "*"
+  checksum: fb238298630370a7392c7abdc80f495ae6c716723e114705d7e3fb67e3850b3859bbfd29391463a3fb8c0b32051847935933d99e719c0478710f8098ee7091c5
+  languageName: node
+  linkType: hard
+
 "@types/graceful-fs@npm:^4.1.3":
   version: 4.1.9
   resolution: "@types/graceful-fs@npm:4.1.9"
@@ -1635,6 +1680,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@types/http-errors@npm:*":
+  version: 2.0.4
+  resolution: "@types/http-errors@npm:2.0.4"
+  checksum: 1f3d7c3b32c7524811a45690881736b3ef741bf9849ae03d32ad1ab7062608454b150a4e7f1351f83d26a418b2d65af9bdc06198f1c079d75578282884c4e8e3
+  languageName: node
+  linkType: hard
+
 "@types/interpret@npm:^1.1.1":
   version: 1.1.3
   resolution: "@types/interpret@npm:1.1.3"
@@ -1702,6 +1754,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@types/mime@npm:^1":
+  version: 1.3.5
+  resolution: "@types/mime@npm:1.3.5"
+  checksum: e29a5f9c4776f5229d84e525b7cd7dd960b51c30a0fb9a028c0821790b82fca9f672dab56561e2acd9e8eed51d431bde52eafdfef30f643586c4162f1aecfc78
+  languageName: node
+  linkType: hard
+
 "@types/ms@npm:*":
   version: 0.7.34
   resolution: "@types/ms@npm:0.7.34"
@@ -1745,6 +1804,20 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@types/qs@npm:*":
+  version: 6.9.16
+  resolution: "@types/qs@npm:6.9.16"
+  checksum: 2e8918150c12735630f7ee16b770c72949274938c30306025f68aaf977227f41fe0c698ed93db1099e04916d582ac5a1faf7e3c7061c8d885d9169f59a184b6c
+  languageName: node
+  linkType: hard
+
+"@types/range-parser@npm:*":
+  version: 1.2.7
+  resolution: "@types/range-parser@npm:1.2.7"
+  checksum: 95640233b689dfbd85b8c6ee268812a732cf36d5affead89e806fe30da9a430767af8ef2cd661024fd97e19d61f3dec75af2df5e80ec3bea000019ab7028629a
+  languageName: node
+  linkType: hard
+
 "@types/semver@npm:^7.3.12, @types/semver@npm:^7.5.1":
   version: 7.5.8
   resolution: "@types/semver@npm:7.5.8"
@@ -1752,6 +1825,27 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@types/send@npm:*":
+  version: 0.17.4
+  resolution: "@types/send@npm:0.17.4"
+  dependencies:
+    "@types/mime": ^1
+    "@types/node": "*"
+  checksum: cf4db48251bbb03cd6452b4de6e8e09e2d75390a92fd798eca4a803df06444adc94ed050246c94c7ed46fb97be1f63607f0e1f13c3ce83d71788b3e08640e5e0
+  languageName: node
+  linkType: hard
+
+"@types/serve-static@npm:*":
+  version: 1.15.7
+  resolution: "@types/serve-static@npm:1.15.7"
+  dependencies:
+    "@types/http-errors": "*"
+    "@types/node": "*"
+    "@types/send": "*"
+  checksum: bbbf00dbd84719da2250a462270dc68964006e8d62f41fe3741abd94504ba3688f420a49afb2b7478921a1544d3793183ffa097c5724167da777f4e0c7f1a7d6
+  languageName: node
+  linkType: hard
+
 "@types/stack-utils@npm:^2.0.0":
   version: 2.0.3
   resolution: "@types/stack-utils@npm:2.0.3"
@@ -1949,6 +2043,16 @@ __metadata:
   languageName: node
   linkType: hard
 
+"accepts@npm:~1.3.8":
+  version: 1.3.8
+  resolution: "accepts@npm:1.3.8"
+  dependencies:
+    mime-types: ~2.1.34
+    negotiator: 0.6.3
+  checksum: 50c43d32e7b50285ebe84b613ee4a3aa426715a7d131b65b786e2ead0fd76b6b60091b9916d3478a75f11f162628a2139991b6c03ab3f1d9ab7c86075dc8eab4
+  languageName: node
+  linkType: hard
+
 "acorn-jsx@npm:^5.3.2":
   version: 5.3.2
   resolution: "acorn-jsx@npm:5.3.2"
@@ -2130,6 +2234,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"array-flatten@npm:1.1.1":
+  version: 1.1.1
+  resolution: "array-flatten@npm:1.1.1"
+  checksum: a9925bf3512d9dce202112965de90c222cd59a4fbfce68a0951d25d965cf44642931f40aac72309c41f12df19afa010ecadceb07cfff9ccc1621e99d89ab5f3b
+  languageName: node
+  linkType: hard
+
 "array-includes@npm:^3.1.8":
   version: 3.1.8
   resolution: "array-includes@npm:3.1.8"
@@ -2335,6 +2446,26 @@ __metadata:
   languageName: node
   linkType: hard
 
+"body-parser@npm:1.20.3":
+  version: 1.20.3
+  resolution: "body-parser@npm:1.20.3"
+  dependencies:
+    bytes: 3.1.2
+    content-type: ~1.0.5
+    debug: 2.6.9
+    depd: 2.0.0
+    destroy: 1.2.0
+    http-errors: 2.0.0
+    iconv-lite: 0.4.24
+    on-finished: 2.4.1
+    qs: 6.13.0
+    raw-body: 2.5.2
+    type-is: ~1.6.18
+    unpipe: 1.0.0
+  checksum: 1a35c59a6be8d852b00946330141c4f142c6af0f970faa87f10ad74f1ee7118078056706a05ae3093c54dabca9cd3770fa62a170a85801da1a4324f04381167d
+  languageName: node
+  linkType: hard
+
 "boolbase@npm:^1.0.0":
   version: 1.0.0
   resolution: "boolbase@npm:1.0.0"
@@ -2432,6 +2563,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"bytes@npm:3.1.2":
+  version: 3.1.2
+  resolution: "bytes@npm:3.1.2"
+  checksum: e4bcd3948d289c5127591fbedf10c0b639ccbf00243504e4e127374a15c3bc8eed0d28d4aaab08ff6f1cf2abc0cce6ba3085ed32f4f90e82a5683ce0014e1b6e
+  languageName: node
+  linkType: hard
+
 "cacache@npm:^18.0.0":
   version: 18.0.4
   resolution: "cacache@npm:18.0.4"
@@ -2681,6 +2819,22 @@ __metadata:
   languageName: node
   linkType: hard
 
+"content-disposition@npm:0.5.4":
+  version: 0.5.4
+  resolution: "content-disposition@npm:0.5.4"
+  dependencies:
+    safe-buffer: 5.2.1
+  checksum: afb9d545e296a5171d7574fcad634b2fdf698875f4006a9dd04a3e1333880c5c0c98d47b560d01216fb6505a54a2ba6a843ee3a02ec86d7e911e8315255f56c3
+  languageName: node
+  linkType: hard
+
+"content-type@npm:~1.0.4, content-type@npm:~1.0.5":
+  version: 1.0.5
+  resolution: "content-type@npm:1.0.5"
+  checksum: 566271e0a251642254cde0f845f9dd4f9856e52d988f4eb0d0dcffbb7a1f8ec98de7a5215fc628f3bce30fe2fb6fd2bc064b562d721658c59b544e2d34ea2766
+  languageName: node
+  linkType: hard
+
 "convert-source-map@npm:^2.0.0":
   version: 2.0.0
   resolution: "convert-source-map@npm:2.0.0"
@@ -2688,6 +2842,20 @@ __metadata:
   languageName: node
   linkType: hard
 
+"cookie-signature@npm:1.0.6":
+  version: 1.0.6
+  resolution: "cookie-signature@npm:1.0.6"
+  checksum: f4e1b0a98a27a0e6e66fd7ea4e4e9d8e038f624058371bf4499cfcd8f3980be9a121486995202ba3fca74fbed93a407d6d54d43a43f96fd28d0bd7a06761591a
+  languageName: node
+  linkType: hard
+
+"cookie@npm:0.7.1":
+  version: 0.7.1
+  resolution: "cookie@npm:0.7.1"
+  checksum: cec5e425549b3650eb5c3498a9ba3cde0b9cd419e3b36e4b92739d30b4d89e0b678b98c1ddc209ce7cf958cd3215671fd6ac47aec21f10c2a0cc68abd399d8a7
+  languageName: node
+  linkType: hard
+
 "create-jest@npm:^29.7.0":
   version: 29.7.0
   resolution: "create-jest@npm:29.7.0"
@@ -2763,6 +2931,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"debug@npm:2.6.9":
+  version: 2.6.9
+  resolution: "debug@npm:2.6.9"
+  dependencies:
+    ms: 2.0.0
+  checksum: d2f51589ca66df60bf36e1fa6e4386b318c3f1e06772280eea5b1ae9fd3d05e9c2b7fd8a7d862457d00853c75b00451aa2d7459b924629ee385287a650f58fe6
+  languageName: node
+  linkType: hard
+
 "debug@npm:4, debug@npm:^4.0.0, debug@npm:^4.1.0, debug@npm:^4.1.1, debug@npm:^4.3.1, debug@npm:^4.3.2, debug@npm:^4.3.3, debug@npm:^4.3.4, debug@npm:~4.3.6":
   version: 4.3.7
   resolution: "debug@npm:4.3.7"
@@ -2846,6 +3023,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"depd@npm:2.0.0":
+  version: 2.0.0
+  resolution: "depd@npm:2.0.0"
+  checksum: abbe19c768c97ee2eed6282d8ce3031126662252c58d711f646921c9623f9052e3e1906443066beec1095832f534e57c523b7333f8e7e0d93051ab6baef5ab3a
+  languageName: node
+  linkType: hard
+
 "deprecation@npm:^2.0.0, deprecation@npm:^2.3.1":
   version: 2.3.1
   resolution: "deprecation@npm:2.3.1"
@@ -2853,6 +3037,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"destroy@npm:1.2.0":
+  version: 1.2.0
+  resolution: "destroy@npm:1.2.0"
+  checksum: 0acb300b7478a08b92d810ab229d5afe0d2f4399272045ab22affa0d99dbaf12637659411530a6fcd597a9bdac718fc94373a61a95b4651bbc7b83684a565e38
+  languageName: node
+  linkType: hard
+
 "detect-newline@npm:^3.0.0":
   version: 3.1.0
   resolution: "detect-newline@npm:3.1.0"
@@ -2951,6 +3142,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"ee-first@npm:1.1.1":
+  version: 1.1.1
+  resolution: "ee-first@npm:1.1.1"
+  checksum: 1b4cac778d64ce3b582a7e26b218afe07e207a0f9bfe13cc7395a6d307849cfe361e65033c3251e00c27dd060cab43014c2d6b2647676135e18b77d2d05b3f4f
+  languageName: node
+  linkType: hard
+
 "ejs@npm:^3.1.10":
   version: 3.1.10
   resolution: "ejs@npm:3.1.10"
@@ -2997,6 +3195,20 @@ __metadata:
   languageName: node
   linkType: hard
 
+"encodeurl@npm:~1.0.2":
+  version: 1.0.2
+  resolution: "encodeurl@npm:1.0.2"
+  checksum: e50e3d508cdd9c4565ba72d2012e65038e5d71bdc9198cb125beb6237b5b1ade6c0d343998da9e170fb2eae52c1bed37d4d6d98a46ea423a0cddbed5ac3f780c
+  languageName: node
+  linkType: hard
+
+"encodeurl@npm:~2.0.0":
+  version: 2.0.0
+  resolution: "encodeurl@npm:2.0.0"
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+  version: 1.0.0
+  resolution: "unpipe@npm:1.0.0"
+  checksum: 4fa18d8d8d977c55cb09715385c203197105e10a6d220087ec819f50cb68870f02942244f1017565484237f1f8c5d3cd413631b1ae104d3096f24fdfde1b4aa2
+  languageName: node
+  linkType: hard
+
 "update-browserslist-db@npm:^1.1.0":
   version: 1.1.0
   resolution: "update-browserslist-db@npm:1.1.0"
@@ -8145,6 +8644,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"utils-merge@npm:1.0.1":
+  version: 1.0.1
+  resolution: "utils-merge@npm:1.0.1"
+  checksum: c81095493225ecfc28add49c106ca4f09cdf56bc66731aa8dabc2edbbccb1e1bfe2de6a115e5c6a380d3ea166d1636410b62ef216bb07b3feb1cfde1d95d5080
+  languageName: node
+  linkType: hard
+
 "uuid@npm:^8.3.2":
   version: 8.3.2
   resolution: "uuid@npm:8.3.2"
@@ -8179,6 +8685,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"vary@npm:~1.1.2":
+  version: 1.1.2
+  resolution: "vary@npm:1.1.2"
+  checksum: ae0123222c6df65b437669d63dfa8c36cee20a504101b2fcd97b8bf76f91259c17f9f2b4d70a1e3c6bbcee7f51b28392833adb6b2770b23b01abec84e369660b
+  languageName: node
+  linkType: hard
+
 "vfile-message@npm:^2.0.0":
   version: 2.0.4
   resolution: "vfile-message@npm:2.0.4"

From 29300f7d49d6c29e88073d41475ab569a045f69d Mon Sep 17 00:00:00 2001
From: Tate <yongzhao.tan@onfinality.io>
Date: Thu, 10 Oct 2024 01:53:15 +0000
Subject: [PATCH 7/7] change log

---
 CHANGELOG.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 78286ab..9204499 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 - Support subqery _metadata query(#4)
 - GraphiQL control flag - `playground`
+- Health check API `/.well-known/apollo/server-health`
 
 ### Fixed
 - Bigint query type not match