在 Node.js 中使用 ElasticSearch 管理电子邮件答案

【问题标题】：Manage emails with ElasticSearch in Node.js在 Node.js 中使用 ElasticSearch 管理电子邮件
【发布时间】：2019-12-06 16:47:42
【问题描述】：

我使用 ElasticSearch v7。我需要配置 ElasticSearch 来搜索电子邮件。我阅读了很多关于不同类型分析器的信息，我需要在 ElasticSearch 中使用这些分析器来解决这个问题。但是没有任何与 Node.js 相关的文章。我使用 NPM 模块elasticsearch 16.3.0。这是我创建映射的代码

async function createUserMapping () {
    const textType = {type: 'text'};
    const keywordType = {type: 'keyword'};
    const mapping = {
      properties: {
        lastName: {...textType, boost: FIELD_PRIORITIES.LASTNAME},
        firstName: {...textType, boost: FIELD_PRIORITIES.FIRSTNAME},
        username: {...keywordType, boost: FIELD_PRIORITIES.USERNAME},
        email: {
          ...keywordType,
          boost: FIELD_PRIORITIES.EMAIL,
        },
      },
    };
    await client.indices.putMapping({
      ...ES_CONFIG.INDEX,
      ...ES_CONFIG.USER.TYPE,
      body: mapping,
    });
}

请帮助我创建自定义分析器的代码。可以的话，举个例子吧。

【问题讨论】：

标签： node.js email elasticsearch elasticsearch-plugin

【解决方案1】：

const CustomEmailAnalyzer = 'email_analyzer';

async function addEmailAnalyzer () {
    await client.indices.putSettings({
      ...ES_CONFIG.INDEX,
      body: {
        analysis: {
          analyzer: {
            [CustomEmailAnalyzer]: {
              type: 'custom',
              tokenizer: 'uax_url_email',
              filter: ['lowercase', 'stop'],
            },
          },
        },
      },
    });
}

async function createUserMapping () {
    const textType = {type: 'text'};
    const keywordType = {type: 'keyword'};
    const mapping = {
      properties: {
        lastName: {...textType, boost: FIELD_PRIORITIES.LASTNAME},
        firstName: {...textType, boost: FIELD_PRIORITIES.FIRSTNAME},
        username: {...keywordType, boost: FIELD_PRIORITIES.USERNAME},
        email: {
          ...textType,
          boost: FIELD_PRIORITIES.EMAIL,
          analyzer: CustomEmailAnalyzer,
        },
      },
    };
    await client.indices.putMapping({
      ...ES_CONFIG.INDEX,
      body: mapping,
    });
}

(async () => {
  await client.indices.close(ES_CONFIG.INDEX);
  await addEmailAnalyzer();
  await client.indices.open(ES_CONFIG.INDEX);
  await createUserMapping();
})();

【讨论】：