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@ -1,5 +1,9 @@
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const _ = require('lodash')
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const tsquery = require('pg-tsquery')()
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const stream = require('stream')
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const Promise = require('bluebird')
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const pipeline = Promise.promisify(stream.pipeline)
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/* global WIKI */
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module.exports = {
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async activate() {
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@ -8,7 +12,10 @@ module.exports = {
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}
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},
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async deactivate() {
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// not used
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WIKI.logger.info(`(SEARCH/POSTGRES) Dropping index tables...`)
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await WIKI.models.knex.schema.dropTable('pagesWords')
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await WIKI.models.knex.schema.dropTable('pagesVector')
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WIKI.logger.info(`(SEARCH/POSTGRES) Index tables have been dropped.`)
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},
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/**
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* INIT
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@ -27,6 +34,7 @@ module.exports = {
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table.string('title')
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table.string('description')
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table.specificType('tokens', 'TSVECTOR')
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table.text('content')
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})
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}
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// -> Create Words Index
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@ -71,7 +79,6 @@ module.exports = {
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WIKI.logger.warn('Search Engine Error:')
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WIKI.logger.warn(err)
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}
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},
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/**
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* CREATE
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@ -80,10 +87,10 @@ module.exports = {
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*/
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async created(page) {
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await WIKI.models.knex.raw(`
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INSERT INTO "pagesVector" (path, locale, title, description, tokens) VALUES (
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'?', '?', '?', '?', (setweight(to_tsvector('${this.config.dictLanguage}', '?'), 'A') || setweight(to_tsvector('${this.config.dictLanguage}', '?'), 'B') || setweight(to_tsvector('${this.config.dictLanguage}', '?'), 'C'))
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INSERT INTO "pagesVector" (path, locale, title, description, "tokens") VALUES (
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?, ?, ?, ?, (setweight(to_tsvector('${this.config.dictLanguage}', ?), 'A') || setweight(to_tsvector('${this.config.dictLanguage}', ?), 'B') || setweight(to_tsvector('${this.config.dictLanguage}', ?), 'C'))
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)
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`, [page.path, page.localeCode, page.title, page.description, page.title, page.description, page.content])
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`, [page.path, page.localeCode, page.title, page.description, page.title, page.description, page.safeContent])
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},
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/**
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* UPDATE
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@ -99,7 +106,7 @@ module.exports = {
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setweight(to_tsvector('${this.config.dictLanguage}', ?), 'B') ||
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setweight(to_tsvector('${this.config.dictLanguage}', ?), 'C'))
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WHERE path = ? AND locale = ?
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`, [page.title, page.description, page.title, page.description, page.content, page.path, page.localeCode])
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`, [page.title, page.description, page.title, page.description, page.safeContent, page.path, page.localeCode])
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},
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/**
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* DELETE
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@ -132,14 +139,34 @@ module.exports = {
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async rebuild() {
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WIKI.logger.info(`(SEARCH/POSTGRES) Rebuilding Index...`)
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await WIKI.models.knex('pagesVector').truncate()
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await WIKI.models.knex('pagesWords').truncate()
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await pipeline(
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WIKI.models.knex.column('path', 'localeCode', 'title', 'description', 'render').select().from('pages').where({
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isPublished: true,
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isPrivate: false
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}).stream(),
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new stream.Transform({
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objectMode: true,
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transform: async (page, enc, cb) => {
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const content = WIKI.models.pages.cleanHTML(page.render)
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await WIKI.models.knex.raw(`
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INSERT INTO "pagesVector" (path, locale, title, description, "tokens", content) VALUES (
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?, ?, ?, ?, (setweight(to_tsvector('${this.config.dictLanguage}', ?), 'A') || setweight(to_tsvector('${this.config.dictLanguage}', ?), 'B') || setweight(to_tsvector('${this.config.dictLanguage}', ?), 'C')), ?
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)
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`, [page.path, page.localeCode, page.title, page.description, page.title, page.description, content, content])
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cb()
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}
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})
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)
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await WIKI.models.knex.raw(`
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INSERT INTO "pagesVector" (path, locale, title, description, "tokens")
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SELECT path, "localeCode" AS locale, title, description,
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(setweight(to_tsvector('${this.config.dictLanguage}', title), 'A') ||
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setweight(to_tsvector('${this.config.dictLanguage}', description), 'B') ||
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setweight(to_tsvector('${this.config.dictLanguage}', content), 'C')) AS tokens
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FROM "pages"
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WHERE pages."isPublished" AND NOT pages."isPrivate"`)
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INSERT INTO "pagesWords" (word)
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SELECT word FROM ts_stat(
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'SELECT to_tsvector(''simple'', "title") || to_tsvector(''simple'', "description") || to_tsvector(''simple'', "content") FROM "pagesVector"'
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)
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`)
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WIKI.logger.info(`(SEARCH/POSTGRES) Index rebuilt successfully.`)
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}
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}
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