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search.js
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search.js
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/** @format
*/
var redis = require('redis'),
client = redis.createClient()
var es = new require('elasticsearch').Client({
host: process.env.ES_URL,
log: false,
requestTimeout: 3000,
})
const Json2csvParser = require('json2csv').Parser
var prindleRoom = {
accession_number: '82.43.1-60',
artist: 'John Scott Bradstreet',
creditline: 'Gift of funds from Wheaton Wood, by exchange',
culture: 'American',
country: 'United States',
dated: '1906',
life_date: 'American, 1865-1914',
title: 'Duluth Living Room (from the William and Mina Prindle House',
room: 'G320',
}
var search = function(query, size, sort, filters, isApp, dataPrefix, from, req, callback) {
var fields = [
'artist.artist^15',
'artist.folded^15',
'title^11',
'title.folded^5',
'description^3',
'text.*^2',
'accession_number',
'_all',
'artist.ngram^2',
'title.ngram',
]
if (query.match(/".*"/)) fields = fields.slice(0, -2)
if (filters) query += ' ' + filters
var limitToPublicAccess = req.query.token != process.env.PRIVATE_ACCESS_TOKEN
if (
limitToPublicAccess &&
[query, filters].indexOf('deaccessioned:true') +
[query, filters].indexOf('deaccessioned:"true"') ===
-2
)
query += ' public_access:1'
// if(isApp) query += ' room:G*' // restrict searches from the journeys app to only on view objects
var isMoreArtsmia =
(req.headers.origin && req.headers.origin.match('//more.artsmia.org')) ||
(req.query.tag && req.query.tag == 'more')
var boostOnViewArtworks = isApp || isMoreArtsmia
var searches = {
flt: {
fields: fields,
like_text: query,
},
multi_match: {
query: query,
fields: fields,
type: 'best_fields',
tie_breaker: 0.3,
},
common: {
_all: {
query: query,
cutoff_frequency: 0.01,
minimum_should_match: { low_freq: 1, high_freq: 3 },
},
},
sqs: {
query: query,
fields: fields,
tie_breaker: 0.3,
default_operator: 'and',
// default_operator: "or",
minimum_should_match: '2<60%',
// "fuzzy_prefix_length" : 3,
},
}
var function_score_sqs = {
query: { query_string: searches.sqs }, // good
//query: {flt: searches.flt}, // not great
//query: {multi_match: searches.multi_match}, // good
//query: {common: searches.common}, // ok, v different from sqs and multi
functions: [
{ filter: { term: { highlight: 'true' } }, weight: 3 },
{ filter: { term: { featured: 'true' } }, weight: 2.5 },
{ filter: { term: { image: 'valid' } }, weight: 2 },
{
filter: { prefix: { room: 'g' } },
weight: boostOnViewArtworks ? 101 : 1.1,
},
{
filter: { exists: { field: 'related:artstories' } },
weight: isMoreArtsmia ? 50 : 1.1,
},
{
filter: { exists: { field: 'related:newsflashes' } },
weight: isMoreArtsmia ? 50 : 1.1,
},
{
filter: { exists: { field: 'related:audio-stops' } },
weight: isMoreArtsmia ? 50 : 1.1,
},
{
filter: { exists: { field: 'related:3dmodels' } },
weight: isMoreArtsmia ? 50 : 1.1,
},
{
filter: { exists: { field: 'related:stories' } },
weight: isMoreArtsmia ? 50 : 1.1,
},
],
score_mode: 'sum',
}
var q = { function_score: function_score_sqs }
var suggest = {
text: query,
artist: {
term: {
field: 'artist',
},
},
artist_completion: {
completion: {
field: 'artist_suggest',
},
},
title_completion: {
completion: {
field: 'title_suggest',
},
},
}
var aggSize = 200
var aggs = {
Image: {
terms: {
script: "doc['image'].value == 'valid' ? 'Available' : 'Unavailable'",
size: aggSize,
},
},
// "Image": {"terms": {"field": "image", "size": aggSize}},
// "Image": {
// "terms": {
// "field": "image",
// "size": aggSize
// },
// "aggs": {
// "image_rights_type": {"terms": {"field": "image_rights_type"}},
// }
// },
'On View': {
terms: {
script:
"doc['room.raw'].value == 'Not on View' ? 'Not on View' : 'On View'",
size: aggSize,
},
},
// "On View": {
// "terms": {
// "script": "doc['room.raw'].value == 'Not on View' ? 'Not on View' : 'On View'",
// size: aggSize
// },
// "aggs": {"Room": {"terms": {"field": "room.raw", "size": aggSize}}},
// },
Room: { terms: { field: 'room.raw', size: aggSize } },
Rights: { terms: { field: 'rights_type' } },
Artist: { terms: { field: 'artist.raw', size: aggSize } },
Country: { terms: { field: 'country.raw', size: aggSize } },
Style: { terms: { field: 'style.raw', size: aggSize } },
Medium: { terms: { field: 'medium.stop', size: aggSize } },
Classification: { terms: { field: 'classification', size: aggSize } },
Title: { terms: { field: 'title.raw', size: aggSize } },
Gist: { significant_terms: { field: '_all' } },
Department: { terms: { field: 'department.raw', size: aggSize } },
Tags: { terms: { field: 'tags', size: aggSize } },
// "image_rights_type": {"terms": {"field": "image_rights_type"}},
// other facets? department
// "year": {"histogram": {"field": "dated", "interval": 50}},
// "year": {"terms": {"field": "dated", "size": aggSize}},
// "Creditline": {"terms": {"field": "creditline.raw", "size": aggSize}},
}
var highlight = {
fields: { '*': { fragment_size: 5000, number_of_fragments: 1 } },
}
var [type,index] = getTypeIndexFromDataPrefix(dataPrefix)
var search = {
index: index,
dataPrefix: dataPrefix,
body: {
query: q,
aggs: aggs,
highlight: highlight,
suggest: suggest,
},
size: size,
from: from,
limitToPublicAccess: limitToPublicAccess,
isMoreArtsmia: isMoreArtsmia,
boostOnViewArtworks: boostOnViewArtworks,
}
// when the search is undefined or blank, do a count over the aggregations
if (query == '' || query == undefined) {
search = { body: { size: 0, aggs: aggs }, searchType: 'count' }
}
if (sort) {
var [sortField, sortOrder] = sort.split('-')
search.body.sort = { [sortField]: { order: sortOrder || 'asc' } }
}
checkRedisForCachedSearch(search, query, req, function(
err,
cachedResult,
cacheKey
) {
// if this has been cached in redis, return that result directly
if (cachedResult) {
return callback(null, JSON.parse(cachedResult))
}
es.search(search).then(
function(body) {
body.query = q
callback(null, body)
var skipCaching = req.query.expireCache || req.query.tag
if (!skipCaching) {
var cacheTTL = body.took * 60
body.cache = { cached: true, key: cacheKey }
client.set(cacheKey, JSON.stringify(body), function(err, reply) {
if (!err) client.expire(cacheKey, cacheTTL)
})
}
},
function(error) {
console.error(error)
callback(error, [])
}
)
})
}
var searchEndpoint = function(req, res) {
if (req.params.query == 'favicon.ico') return res.send(404)
var replies = []
var size = req.query.size || (req.query.format === 'csv' ? 1000 : 100)
var sort = req.query.sort
var from = req.query.from || 0
var filters = req.query.filters
var userAgent = req.headers['user-agent']
var isApp = userAgent && userAgent.match('MIA') // 'MIA/8 CFNetwork/758.0.2 Darwin/15.0.0' means this request came frmo the journeys app
var dataPrefix = req.query.dataPrefix // pull data from a non-mia-artworks index
search(
req.params.query || '',
size,
sort,
filters,
isApp,
dataPrefix,
from,
req,
function(error, results) {
results.query = req.params.query
results.filters = filters
results.error = error
if (req.query.format === 'csv') {
// How to re-query and pull the full set of results, or at least up to a higher limit?
if (typeof results === 'string') results = JSON.parse(results) // re-parse cached JSON string
const hits = results.hits.hits.map(hit => {
return Object.assign(hit._source, {
searchTerm: req.params.query,
searchScore: hit._score,
})
})
const csv = new Json2csvParser({}).parse(hits)
const filename = `minneapolis institute of art search: ${
req.params.query
}.csv`
res.attachment(filename)
res.send(csv)
// TODO - "download as CSV" button on collections search pages
} else {
return res.status(error ? (error.status || 500) : 200).json(results)
}
}
)
}
const baseUrl =
process.env.NODE_ENV === 'production'
? `https://search.artsmia.org`
: 'http://localhost:4680'
function getTypeIndexFromDataPrefix(prefix) {
if(prefix === 'fitd') return ['foot-in-the-door', 'foot-in-the-door']
if(prefix === 'ca21') return ['creativity-academy-2021', 'creativity-academy-2021']
if(prefix === 'aib21') return ['art-in-bloom-2021', 'art-in-bloom-2021']
return ['object_data', process.env.ES_index]
}
var id = function(req, res) {
var id = req.params.id
if (id == 'G320') return res.json(prindleRoom)
// if the given :id isn't numeric, do an "I'm feeling lucky" search
if (!id.match(/\d+/)) {
const toFirstHit = function(error, results) {
if (typeof results === 'string') results = JSON.parse(results)
if (results.hits.total === 0) error = 'No results found'
if (error) return res.status(404).json({ error: error })
const firstId = results.hits.hits[0]._id
return res.redirect(`${baseUrl}/id/${firstId}`)
}
return search(id, 1, undefined, undefined, false, dataPrefix, 0, req, toFirstHit)
}
var dataPrefix = req.query.dataPrefix
var [type, index] = getTypeIndexFromDataPrefix(dataPrefix)
es.get({ id: id, type: type, index: index }, function(
err,
reply
) {
if (err) {
console.error('ES error', err)
return client.hget('object:' + ~~(id / 1000), id, function(err, reply) {
return res.json(JSON.parse(reply))
})
}
res.json(reply._source)
})
}
var ids = function(req, res) {
var ids = req.params.ids.split(',')
var dataPrefix = req.query.dataPrefix
var [type, index] = getTypeIndexFromDataPrefix(dataPrefix)
var docs = ids.map(function(id) {
return { _index: index, _type: type, _id: id }
})
es.mget({ body: { docs: docs } }, function(err, response) {
if (err) {
console.error(err)
return res.send('oops')
}
if (req.query.format === 'csv') { // TODO de-dupe with the CSV handling in the general search
// How to re-query and pull the full set of results, or at least up to a higher limit?
if (typeof results === 'string') results = JSON.parse(results) // re-parse cached JSON string
const hits = response.docs.map(hit => {
return Object.assign(hit._source, {
searchTerm: req.params.query,
searchScore: hit._score,
})
})
const csv = new Json2csvParser({}).parse(hits)
const filename = `minneapolis institute of art search: ${
ids.join('-')
}.csv`
res.attachment(filename)
res.send(csv)
} else {
res.json({
hits: {
total: response.docs.length,
hits: response.docs,
},
})
}
})
}
var tag = function(req, res) {
client.smembers('tag:' + req.params.tag, function(err, ids) {
var m = client.multi()
ids.forEach(function(id) {
m.hget('object:' + ~~(id / 1000), id)
})
m.exec(function(err, replies) {
var filter = req.query.filter
if (filter == undefined)
return res.json(
replies.map(function(meta) {
return JSON.parse(meta)
})
)
filter = filter.split(',')
var filtered = replies.map(function(meta) {
if (meta == null) return
var json = JSON.parse(meta)
return filter.reduce(function(all, field) {
all[field] = json[field]
return all
}, {})
})
return res.send(filtered)
})
})
}
// cache frequent searches, time-limited
function checkRedisForCachedSearch(search, query, req, callback) {
var sortKey = req.query.sort && 'sort:' + req.query.sort.replace('-asc', '')
var cacheKey =
'cache::search::' +
[query, search.size, search.from, sortKey, search.isMoreArtsmia, search.dataPrefix]
.filter(val => !!val)
.join('::')
.replace(/ /g, '-')
if (!search.limitToPublicAccess) cacheKey = cacheKey + '::private'
client.get(cacheKey, function(err, reply) {
if (!!req.query.expireCache && reply) {
client.del(cacheKey, redis.print)
reply = JSON.parse(reply)
reply.cache.expiring = true
// reply = JSON.stringify(reply)
}
return callback(err, reply, cacheKey)
})
}
var autofill = function(req, res) {
var query = {
index: process.env.ES_index,
body: {
text: req.params.prefix,
artist_completion: {
completion: {
field: 'artist_suggest',
},
},
highlight_artist_completion: {
completion: {
field: 'highlight_artist_suggest',
},
},
title_completion: {
completion: {
field: 'title_suggest',
},
},
},
}
es.suggest(query).then(function(body) {
res.json(body)
})
}
var random = function(req, res) {
var size = req.query.size || 1
var query =
req.query && req.query.q
? { query_string: { query: (req.query.q += ' public_access:1') } }
: { query_string: { query: 'public_access:1' } }
var dataPrefix = req.query.dataPrefix
var [type, index] = getTypeIndexFromDataPrefix(dataPrefix)
es.search({
index: index,
body: {
query: {
function_score: {
query: query,
random_score: {},
},
},
},
size: size,
}).then(function(results, error) {
var firstHitSource = results.hits.hits[0]._source
return res.json(
size == 1 ? firstHitSource : results.hits.hits,
(error && error.status) || 200
)
})
}
module.exports = {
search: searchEndpoint,
id: id,
ids: ids,
tag: tag,
autofill: autofill,
random: random,
}