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crawl.go
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crawl.go
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package datastore
import (
"database/sql"
"errors"
"fmt"
"strings"
"github.com/ducknificient/web-intelligence/go/entity"
)
func (d *PostgresDB) CrawlpageList(param entity.CrawlpageListParam) (dataList []entity.CrawlpageListData, err error) {
prefixLog := `CrawlpageList`
var (
errMsg string
)
qResultsInt := param.Count
if param.Count == 0 {
param.Count = 10
}
qPageInt := param.Page
if param.Page == 0 {
qPageInt = 1
}
var limit = qResultsInt
var toffset = qResultsInt
if toffset == 0 {
toffset = 1
}
var offset = (qPageInt - 1) * toffset
// Prepare SQL statement to check if data exists
sqlStatement := `SELECT
COUNT(1)
FROM
webintelligence.tabled cp
WHERE
du ilike $3
LIMIT $1 OFFSET $2`
row := d.conn.QueryRow(d.ctx, sqlStatement, limit, offset, `%`+param.Search+`%`)
var count int
err = row.Scan(&count)
if err != nil {
errMsg = fmt.Sprintf("Unable to select count from webintelligence.tableD. q: %v. param: %v,%v,%v .err: %#v", sqlStatement, limit, offset, `%`+param.Search+`%`, err.Error())
err = errors.New(errMsg)
return dataList, err
}
if count == 0 {
return dataList, err
}
sqlStatement = `SELECT
cp.du,
cp.u,
cp.task
FROM webintelligence.tabled cp
WHERE
du ilike $3
ORDER BY cp.created DESC
LIMIT $1 OFFSET $2`
d.logger.Info(sqlStatement)
rows, err := d.conn.Query(d.ctx, sqlStatement, limit, offset, `%`+param.Search+`%`)
if err != nil {
errMsg = fmt.Sprintf("Unable to select from webintelligence.crawlpage. q: %v. param: %v,%v,%v .err: %#v", sqlStatement, limit, offset, `%`+param.Search+`%`, err.Error())
err = errors.New(errMsg)
return dataList, err
}
defer rows.Close()
for rows.Next() {
var (
rs_pagesource sql.NullString
rs_link sql.NullString
rs_task sql.NullString
)
err := rows.Scan(&rs_pagesource, &rs_link, &rs_task)
if err != nil {
errMsg = fmt.Sprintf("%v Can't scan query, q:'%v', err:'%v'.", prefixLog, sqlStatement, err.Error())
err = errors.New(errMsg)
return dataList, err
}
var (
subdataList []entity.CrawlhrefListData
)
subdataList = make([]entity.CrawlhrefListData, 0)
data := entity.CrawlpageListData{
Pagesource: rs_pagesource.String,
Link: rs_link.String,
HrefList: subdataList,
}
dataList = append(dataList, data)
}
return dataList, err
}
func (d *PostgresDB) CrawlpageListParsed(param entity.CrawlpageListParam) (dataList []entity.CrawlpageListParsedData, err error) {
prefixLog := `CrawlpageList`
var (
errMsg string
)
qResultsInt := param.Count
if param.Count == 0 {
param.Count = 10
}
qPageInt := param.Page
if param.Page == 0 {
qPageInt = 1
}
var limit = qResultsInt
var toffset = qResultsInt
if toffset == 0 {
toffset = 1
}
var offset = (qPageInt - 1) * toffset
// Prepare SQL statement to check if data exists
sqlStatement := `SELECT
COUNT(1)
FROM webintelligence.crawlpage cp
WHERE task ='JATIMPROV'
AND link LIKE 'https://jatimprov%'
AND link LIKE '%/berita/%'
AND cp.pagesource like $3
LIMIT $1 OFFSET $2`
row := d.conn.QueryRow(d.ctx, sqlStatement, limit, offset, `%`+param.Search+`%`)
var count int
err = row.Scan(&count)
if err != nil {
errMsg = fmt.Sprintf("Unable to select count from webintelligence.tableD. q: %v. param: %v,%v,%v .err: %#v", sqlStatement, limit, offset, `%`+param.Search+`%`, err.Error())
err = errors.New(errMsg)
return dataList, err
}
if count == 0 {
return dataList, err
}
sqlStatement = `SELECT
COALESCE(cp.link,''),
COALESCE(cp.pagesource,''),
substring(
cp.pagesource
FROM
'<meta property="og:title" content="(.*?)">'
) AS document_metatitle,
COALESCE(substring(
cp.pagesource
FROM
'<meta property="og:description" content="(.*?)">'
),'') AS document_metacontent,
COALESCE(substring(
cp.pagesource
FROM
'<div class="pr-bg pr-bg-white"></div>
<h3>(.*?)</h3>'
),'') AS document_title,
COALESCE(substring(
cp.pagesource
FROM
'<div class="parallax-header"> <a href="#">(.*?)</a>'
),'') AS document_date,
COALESCE(substring(
cp.pagesource
FROM
'<span>Kategori : </span><a href="#">(.*?)</a> </div>'
),'') AS document_category,
COALESCE(substring(
cp.pagesource
FROM
'<li><span><i class="fal fa-eye"></i>(.*?)</span></li>'
),'') AS document_totalview,
COALESCE(substring(
cp.pagesource
FROM
'<li><span><i class="fal fa-hashtag"></i>(.*?)</span></li>'
),'') AS document_hashtag,
COALESCE(substring(
cp.pagesource
FROM
'<p><p>(.*?)</p></p>'
),'') AS document_content,
COALESCE(substring(
cp.pagesource
FROM
'<span>Berita Terkait</span>(.*?)</div>
</div>
</div>
</div>
</div>
</div>'
),'') AS document_relatednews
FROM webintelligence.crawlpage cp
WHERE task ='JATIMPROV'
AND link LIKE 'https://jatimprov%'
AND link LIKE '%/berita/%'
AND cp.pagesource like $3
ORDER BY cp.created DESC
LIMIT $1 OFFSET $2
`
d.logger.Info(sqlStatement)
rows, err := d.conn.Query(d.ctx, sqlStatement, limit, offset, `%`+param.Search+`%`)
if err != nil {
errMsg = fmt.Sprintf("Unable to select from webintelligence.crawlpage. q: %v. param: %v,%v,%v .err: %#v", sqlStatement, limit, offset, `%`+param.Search+`%`, err.Error())
err = errors.New(errMsg)
return dataList, err
}
defer rows.Close()
for rows.Next() {
var (
rs_link sql.NullString
rs_pagesource sql.NullString
rs_task sql.NullString
rs_document_metatitle sql.NullString
rs_document_metacontent sql.NullString
rs_document_title sql.NullString
rs_document_date sql.NullString
rs_document_category sql.NullString
rs_document_totalview sql.NullString
rs_document_hashtag sql.NullString
rs_document_content sql.NullString
rs_document_relatednews sql.NullString
)
err := rows.Scan(&rs_link, &rs_pagesource, &rs_document_metatitle, &rs_document_metacontent,
&rs_document_title, &rs_document_date, &rs_document_category, &rs_document_totalview,
&rs_document_hashtag, &rs_document_content, &rs_document_relatednews)
if err != nil {
errMsg = fmt.Sprintf("%v Can't scan query, q:'%v', err:'%v'.", prefixLog, sqlStatement, err.Error())
err = errors.New(errMsg)
return dataList, err
}
// clean up data
var (
newcontent string
)
// clean up content
// remove strong tag
newcontent = strings.ReplaceAll(rs_document_content.String, "<strong>", "")
newcontent = strings.ReplaceAll(newcontent, "</strong>", "")
// remove p tag
newcontent = strings.ReplaceAll(newcontent, "<p>", "")
newcontent = strings.ReplaceAll(newcontent, "</p>", "")
data := entity.CrawlpageListParsedData{
// Pagesource: rs_pagesource.String,
Link: rs_link.String,
Task: rs_task.String,
Metatitle: rs_document_metatitle.String,
Metacontent: rs_document_metacontent.String,
Title: rs_document_title.String,
Date: rs_document_date.String,
Category: rs_document_category.String,
TotalView: rs_document_totalview.String,
Hashtag: rs_document_hashtag.String,
Content: newcontent,
RelatedNews: rs_document_relatednews.String,
}
dataList = append(dataList, data)
}
return dataList, err
}
func (d *PostgresDB) GetLatestSeedUrl(task string, seedurl string) (latest_seedurl string, err error) {
latest_seedurl = seedurl
// Prepare SQL statement to check if data exists in tableD
var sqlStatement string
sqlStatement = `SELECT
COUNT(*)
FROM webintelligence.crawlhref WHERE task = $1`
row := d.conn.QueryRow(d.ctx, sqlStatement, task)
var count int
err = row.Scan(&count)
if err != nil {
return latest_seedurl, err
}
// If count > 0, data exists in tableD
if count > 0 {
var rs_latest_seedurl sql.NullString
sqlStatement = `select link from webintelligence.crawlhref ch
WHERE task = $1
order by ch.created desc
limit 1`
row := d.conn.QueryRow(d.ctx, sqlStatement, task)
err = row.Scan(&rs_latest_seedurl)
if err != nil {
return seedurl, err
}
latest_seedurl = rs_latest_seedurl.String
}
return latest_seedurl, err
}
func (d *PostgresDB) GetExistingQueue(task string) (dataList []string, err error) {
prefixLog := `CrawlpageList`
var (
errMsg string
)
// Prepare SQL statement to check if data exists
sqlStatement := `select count (1) from (
select
ch.href,
min(ch.created) as timestamp
from
webintelligence.crawlhref ch
inner join webintelligence.crawlpage cp on cp.link = ch.link
where
ch.href not in (
select cp.link from webintelligence.crawlpage cp
)
and ch.task = $1
GROUP BY ch.href
ORDER BY timestamp ASC
)`
row := d.conn.QueryRow(d.ctx, sqlStatement, task)
var count int
err = row.Scan(&count)
if err != nil {
errMsg = fmt.Sprintf("Unable to select count from webintelligence.crawlhref. q: %v. param: %v .err: %#v", sqlStatement, task, err.Error())
err = errors.New(errMsg)
return dataList, err
}
if count == 0 {
return dataList, err
}
sqlStatement = `SELECT
ch.href,
min(ch.created) as timestamp
from
webintelligence.crawlhref ch
inner join webintelligence.crawlpage cp on cp.link = ch.link
where
ch.href not in (
select cp.link from webintelligence.crawlpage cp
)
and ch.task = $1
GROUP BY ch.href
ORDER BY timestamp ASC`
d.logger.Info(sqlStatement)
rows, err := d.conn.Query(d.ctx, sqlStatement, task)
if err != nil {
errMsg = fmt.Sprintf("Unable to select from webintelligence.crawlpage. q: %v. param: %v .err: %#v", sqlStatement, task, err.Error())
err = errors.New(errMsg)
return dataList, err
}
defer rows.Close()
for rows.Next() {
var (
rs_href sql.NullString
rs_timestamp sql.NullString
)
err := rows.Scan(&rs_href, &rs_timestamp)
if err != nil {
errMsg = fmt.Sprintf("%v Can't scan query, q:'%v', err:'%v'.", prefixLog, sqlStatement, err.Error())
err = errors.New(errMsg)
return dataList, err
}
dataList = append(dataList, rs_href.String)
}
return dataList, err
}