feat: support npm search command like npmio (#513)

- [x] 找个合适的 eggjs es 插件，或者手撸个，看社区的几个版本都比较低
- [x] HTTP Server 新增 API
`/-/v1/search?text=react&size=20&from=0&quality=0.65&popularity=0.98&maintenance=0.5`，第一版不一定能
qpm 都支持，先支持现有的下载量数据，即 popularity 的参考数据
- [x] 监听相关的 metadata 变更的 event，同步写入、删除 增量的 ES 数据，ES 有较强抗压能力，这块直接做成同步就好
- [x] 考虑可能同步也会丢部分数据（stream 不稳定时），HTTP Server 再追加一个手动同步 ES 的接口，传包名同步触发写
ES 即可
- [x] 提供全量一次性的初始化同步 ES 脚本
- [x] setting/mapping 参考
https://github.com/npms-io/npms-analyzer/blob/master/config/elasticsearch/npms.json5

---------

Co-authored-by: fengmk2 <fengmk2@gmail.com>
Co-authored-by: elrrrrrrr <elrrrrrrr@gmail.com>

app/common/PackageUtil.ts

@@ -3,7 +3,8 @@ import { Readable } from 'node:stream';
 import { pipeline } from 'node:stream/promises';
 import * as ssri from 'ssri';
 import tar from 'tar';
-import { PackageJSONType } from '../repository/PackageRepository';
+import { AuthorType, PackageJSONType } from '../repository/PackageRepository';
+
 
 // /@cnpm%2ffoo
 // /@cnpm%2Ffoo
@@ -104,6 +105,19 @@ export async function hasShrinkWrapInTgz(contentOrFile: Uint8Array | string): Pr
   }
 }
 
+/** 写入 ES 时，格式化 author */
+export function formatAuthor(author: string | AuthorType | undefined): AuthorType | undefined {
+  if (author === undefined) {
+    return author;
+  }
+
+  if (typeof author === 'string') {
+    return { name: author };
+  }
+
+  return author;
+}
+
 export async function extractPackageJSON(tarballBytes: Buffer): Promise<PackageJSONType> {
   return new Promise((resolve, reject) => {
     Readable.from(tarballBytes)

app/common/typing.ts

@@ -2,6 +2,7 @@ import { CnpmcoreConfig } from '../port/config';
 import { Readable } from 'stream';
 import { IncomingHttpHeaders } from 'http';
 import { EggContext } from '@eggjs/tegg';
+import { estypes } from '@elastic/elasticsearch';
 
 export interface UploadResult {
   key: string;
@@ -50,6 +51,12 @@ export interface QueueAdapter {
   length(key: string): Promise<number>;
 }
 
+export interface SearchAdapter {
+  search<T>(query: any): Promise<estypes.SearchHitsMetadata<T>>;
+  upsert<T>(id: string, document: T): Promise<string>;
+  delete(id: string): Promise<string>;
+}
+
 export interface AuthUrlResult {
   loginUrl: string;
   doneUrl: string;

app/core/event/SyncESPackage.ts

@@ -0,0 +1,94 @@
+// TODO sync event
+/* eslint-disable @typescript-eslint/no-unused-vars */
+import { EggAppConfig } from 'egg';
+import { Event, Inject } from '@eggjs/tegg';
+import {
+  PACKAGE_UNPUBLISHED,
+  PACKAGE_VERSION_ADDED,
+  PACKAGE_VERSION_REMOVED,
+  PACKAGE_TAG_ADDED,
+  PACKAGE_TAG_CHANGED,
+  PACKAGE_TAG_REMOVED,
+  PACKAGE_MAINTAINER_CHANGED,
+  PACKAGE_MAINTAINER_REMOVED,
+  PACKAGE_META_CHANGED,
+} from './index';
+
+import { PackageSearchService } from '../service/PackageSearchService';
+
+class SyncESPackage {
+  @Inject()
+  protected readonly packageSearchService: PackageSearchService;
+
+  @Inject()
+  protected readonly config: EggAppConfig;
+
+  protected async syncPackage(fullname: string) {
+    if (!this.config.cnpmcore.enableElasticsearch) return;
+    await this.packageSearchService.syncPackage(fullname, true);
+  }
+}
+
+@Event(PACKAGE_UNPUBLISHED)
+export class PackageUnpublished extends SyncESPackage {
+  async handle(fullname: string) {
+    if (!this.config.cnpmcore.enableElasticsearch) return;
+    await this.packageSearchService.removePackage(fullname);
+  }
+}
+
+@Event(PACKAGE_VERSION_ADDED)
+export class PackageVersionAdded extends SyncESPackage {
+  async handle(fullname: string) {
+    await this.syncPackage(fullname);
+  }
+}
+
+@Event(PACKAGE_VERSION_REMOVED)
+export class PackageVersionRemoved extends SyncESPackage {
+  async handle(fullname: string) {
+    await this.syncPackage(fullname);
+  }
+}
+
+@Event(PACKAGE_TAG_ADDED)
+export class PackageTagAdded extends SyncESPackage {
+  async handle(fullname: string) {
+    await this.syncPackage(fullname);
+  }
+}
+
+@Event(PACKAGE_TAG_CHANGED)
+export class PackageTagChanged extends SyncESPackage {
+  async handle(fullname: string) {
+    await this.syncPackage(fullname);
+  }
+}
+
+@Event(PACKAGE_TAG_REMOVED)
+export class PackageTagRemoved extends SyncESPackage {
+  async handle(fullname: string) {
+    await this.syncPackage(fullname);
+  }
+}
+
+@Event(PACKAGE_MAINTAINER_CHANGED)
+export class PackageMaintainerChanged extends SyncESPackage {
+  async handle(fullname: string) {
+    await this.syncPackage(fullname);
+  }
+}
+
+@Event(PACKAGE_MAINTAINER_REMOVED)
+export class PackageMaintainerRemoved extends SyncESPackage {
+  async handle(fullname: string) {
+    await this.syncPackage(fullname);
+  }
+}
+
+@Event(PACKAGE_META_CHANGED)
+export class PackageMetaChanged extends SyncESPackage {
+  async handle(fullname: string) {
+    await this.syncPackage(fullname);
+  }
+}

app/core/service/PackageSearchService.ts

@@ -0,0 +1,216 @@
+import { AccessLevel, Inject, SingletonProto } from '@eggjs/tegg';
+import type { estypes } from '@elastic/elasticsearch';
+import dayjs from 'dayjs';
+
+import { AbstractService } from '../../common/AbstractService';
+import { formatAuthor, getScopeAndName } from '../../common/PackageUtil';
+import { PackageManagerService } from './PackageManagerService';
+import { SearchManifestType, SearchMappingType, SearchRepository } from '../../repository/SearchRepository';
+import { PackageVersionDownloadRepository } from '../../repository/PackageVersionDownloadRepository';
+import { PackageRepository } from '../../repository/PackageRepository';
+
+
+@SingletonProto({
+  accessLevel: AccessLevel.PUBLIC,
+})
+export class PackageSearchService extends AbstractService {
+  @Inject()
+  private readonly packageManagerService: PackageManagerService;
+  @Inject()
+  private readonly searchRepository: SearchRepository;
+  @Inject()
+  private packageVersionDownloadRepository: PackageVersionDownloadRepository;
+  @Inject()
+  protected packageRepository: PackageRepository;
+
+  async syncPackage(fullname: string, isSync = true) {
+    const [ scope, name ] = getScopeAndName(fullname);
+    const fullManifests = await this.packageManagerService.listPackageFullManifests(scope, name, isSync);
+
+    if (!fullManifests.data) {
+      this.logger.warn('[PackageSearchService.syncPackage] save package:%s not found', fullname);
+      return;
+    }
+
+    const pkg = await this.packageRepository.findPackage(scope, name);
+    if (!pkg) {
+      this.logger.warn('[PackageSearchService.syncPackage] findPackage:%s not found', fullname);
+      return;
+    }
+
+    // get last year download data
+    const startDate = dayjs().subtract(1, 'year');
+    const endDate = dayjs();
+
+    const entities = await this.packageVersionDownloadRepository.query(pkg.packageId, startDate.toDate(), endDate.toDate());
+    let downloadsAll = 0;
+    for (const entity of entities) {
+      for (let i = 1; i <= 31; i++) {
+        const day = String(i).padStart(2, '0');
+        const field = `d${day}`;
+        const counter = entity[field];
+        if (!counter) continue;
+        downloadsAll += counter;
+      }
+    }
+
+    const { data: manifest } = fullManifests;
+
+    const latestVersion = manifest['dist-tags'].latest;
+    const latestManifest = manifest.versions[latestVersion];
+
+    const packageDoc: SearchMappingType = {
+      name: manifest.name,
+      version: latestVersion,
+      _rev: manifest._rev,
+      scope: scope ? scope.replace('@', '') : 'unscoped',
+      keywords: manifest.keywords || [],
+      versions: Object.keys(manifest.versions),
+      description: manifest.description,
+      license: manifest.license,
+      maintainers: manifest.maintainers,
+      author: formatAuthor(manifest.author),
+      'dist-tags': manifest['dist-tags'],
+      date: manifest.time[latestVersion],
+      created: manifest.time.created,
+      modified: manifest.time.modified,
+      // 归属 registry，keywords 枚举值
+      _source_registry_name: manifest._source_registry_name,
+      // 最新版本发布人 _npmUser:
+      _npmUser: latestManifest?._npmUser,
+      // 最新版本发布信息
+      publish_time: latestManifest?.publish_time,
+    };
+
+    const document: SearchManifestType = {
+      package: packageDoc,
+      downloads: {
+        all: downloadsAll,
+      },
+    };
+
+    return await this.searchRepository.upsertPackage(document);
+  }
+
+  async searchPackage(text: string, from: number, size: number): Promise<{ objects: (SearchManifestType | undefined)[], total: number }> {
+    const matchQueries = this._buildMatchQueries(text);
+    const scriptScore = this._buildScriptScore({
+      text,
+      scoreEffect: 0.25,
+    });
+
+    const res = await this.searchRepository.searchPackage({
+      body: {
+        size,
+        from,
+        query: {
+          function_score: {
+            boost_mode: 'replace',
+            query: {
+              bool: {
+                should: matchQueries,
+                minimum_should_match: matchQueries.length ? 1 : 0,
+              },
+            },
+            script_score: scriptScore,
+          },
+        },
+      },
+    });
+    const { hits, total } = res;
+    return {
+      objects: hits?.map(item => {
+        return item._source;
+      }),
+      total: (total as estypes.SearchTotalHits).value,
+    };
+  }
+
+  async removePackage(fullname: string) {
+    return await this.searchRepository.removePackage(fullname);
+  }
+
+  // https://github.com/npms-io/queries/blob/master/lib/search.js#L8C1-L78C2
+  private _buildMatchQueries(text: string) {
+    return [
+      // Standard match using cross_fields
+      {
+        multi_match: {
+          query: text,
+          operator: 'and',
+          fields: [
+            'package.name.standard^4',
+            'package.description.standard',
+            'package.keywords.standard^2',
+          ],
+          type: 'cross_fields',
+          boost: 6,
+          tie_breaker: 0.5,
+        },
+      },
+
+      // Partial match using edge-ngram
+      {
+        multi_match: {
+          query: text,
+          operator: 'and',
+          fields: [
+            'package.name.edge_ngram^4',
+            'package.description.edge_ngram',
+            'package.keywords.edge_ngram^2',
+          ],
+          type: 'phrase',
+          slop: 3,
+          boost: 3,
+          tie_breaker: 0.5,
+        },
+      },
+
+      // Normal term match with an english stemmer
+      {
+        multi_match: {
+          query: text,
+          operator: 'and',
+          fields: [
+            'package.name.english_docs^4',
+            'package.description.english_docs',
+            'package.keywords.english_docs^2',
+          ],
+          type: 'cross_fields',
+          boost: 3,
+          tie_breaker: 0.5,
+        },
+      },
+
+      // Normal term match with a more aggressive english stemmer (not so important)
+      {
+        multi_match: {
+          query: text,
+          operator: 'and',
+          fields: [
+            'package.name.english_aggressive_docs^4',
+            'package.description.english_aggressive_docs',
+            'package.keywords.english_aggressive_docs^2',
+          ],
+          type: 'cross_fields',
+          tie_breaker: 0.5,
+        },
+      },
+    ];
+  }
+
+  private _buildScriptScore(params: { text: string | undefined, scoreEffect: number }) {
+    // keep search simple, only download(popularity)
+    const downloads = 'doc["downloads.all"].value';
+    const source = `doc["package.name.raw"].value.equals("${params.text}") ? 100000 + ${downloads} : _score * Math.pow(${downloads}, ${params.scoreEffect})`;
+    return {
+      script: {
+        source,
+        params: {
+          text: params.text || '',
+          scoreEffect: params.scoreEffect,
+        },
+      },
+    };
+  }
+}

app/core/service/PackageSyncerService.ts

@@ -116,6 +116,7 @@ export class PackageSyncerService extends AbstractService {
     if (!this.allowSyncDownloadData) {
       return;
     }
+
     const fullname = pkg.fullname;
     const start = '2011-01-01';
     const end = this.config.cnpmcore.syncDownloadDataMaxDate;