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main ... main

5 changed files with 306 additions and 134 deletions

4
.gitignore vendored
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/thehub_cache
/jobs.json
/thehub.json
/itjobbank_cache
/it-jobbank.json

292
main.go Normal file
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package main
import (
"encoding/json"
"fmt"
"log"
"os"
"strings"
"time"
"github.com/gocolly/colly"
)
type job struct {
Title string `json:"title"`
Logo string `json:"logo"`
Company string `json:"company"`
Location string `json:"location"`
Type string `json:"type"`
Description string `json:"description"`
Link string `json:"link"`
Skills skills `json:"skills"`
Scraped string `json:"scraped"`
Source string `json:"source"`
}
type skills struct {
React bool `json:"react"`
Python bool `json:"python"`
Golang bool `json:"golang"`
Svelte bool `json:"svelte"`
Nextjs bool `json:"nextjs"`
Typescript bool `json:"typescript"`
Tailwind bool `json:"tailwind"`
}
// Utility functions
// Checks if a string contains any of the given keywords
func skillChecker(description string) skills {
return skills{
React: strings.Contains(description, "React"),
Python: strings.Contains(description, "Python"),
Golang: strings.Contains(description, "Golang"),
Svelte: strings.Contains(description, "Svelte"),
Nextjs: strings.Contains(description, "Next.js"),
Typescript: strings.Contains(description, "TypeScript"),
Tailwind: strings.Contains(description, "Tailwind"),
}
}
// Converts job struct to json
func jobsToJson(file *os.File, jobs []job, fName string) {
// Encode jobs slice to JSON
encoder := json.NewEncoder(file)
encoder.SetIndent("", " ") // Pretty-print with indentation
if err := encoder.Encode(jobs); err != nil {
log.Fatalf("Cannot write to file %q: %s", fName, err)
}
fmt.Println("Job details successfully written to", fName)
}
func checkIfPaid(description string) {
for _, keyword := range unpaidKeywords {
if strings.Contains(strings.ToLower(description), keyword) {
return
}
}
}
func checkIfStudent(description string) string {
for _, keyword := range studentKeywords {
if strings.Contains(strings.ToLower(description), keyword) {
return "student"
}
}
return "full time"
}
// Slice to store job details
var (
excluded = []string{"senior", "lead", "founder", "cto", "vp of", "erfaren", "arkitekt", "architect", "manager", "ulønnet", "unpaid", "praktik", "cyber", "leder", "sikkerhed", "supporter"}
unpaidKeywords = []string{"unpaid", "praktik", "ulønnet"}
studentKeywords = []string{"studerende", "studenter", "student", "medhjælper"}
)
func scrapeHub() {
// declare and initialize variables
var (
jobs []job
jobCount int
fName = "thehub.json"
maxJobs = 20
baseUrl = "https://thehub.io"
searchString = "https://thehub.io/jobs?roles=frontenddeveloper&roles=fullstackdeveloper&roles=backenddeveloper&roles=devops&paid=true&countryCode=DK&sorting=newJobs"
file, err = os.Create(fName)
)
if err != nil {
log.Fatalf("Cannot create file %q: %s", fName, err)
}
defer file.Close()
// Instantiate default collector
c := colly.NewCollector(
// visit only the hub
colly.AllowedDomains("www.thehub.io", "thehub.io"),
)
// Instantiate a new collector to visit the job details page
detailsCollector := colly.NewCollector(
colly.AllowedDomains("www.thehub.io", "thehub.io"),
colly.CacheDir("./thehub_cache"),
)
// On every <div> element with class "card__content attribute call callback
c.OnHTML("div[class=card__content]", func(e *colly.HTMLElement) {
if jobCount >= maxJobs {
return
}
// Get the title and ensure it doesn't contain any excluded words
title := e.ChildText("span.card-job-find-list__position")
for _, excludedWord := range excluded {
if strings.Contains(strings.ToLower(title), excludedWord) {
return
}
}
link := e.ChildAttr("a", "href")
fullLink := baseUrl + link
detailsCollector.Visit(fullLink)
})
detailsCollector.OnRequest(func(r *colly.Request) {
fmt.Println("Visiting", r.URL.String())
})
detailsCollector.OnHTML("div[class='view-job-details']", func(e *colly.HTMLElement) {
// Get logo and trim the url
logo := e.ChildAttr("div.media-item__image", "style")
cutLeft := "background-image:url("
cutRight := ");"
trimmedLogo := strings.Trim(logo, cutLeft+cutRight)
// Get the HTML of the description and check to see if it's paid
descriptionHTML, err := e.DOM.Find("content.text-block__content > span").Html()
if err != nil {
log.Printf("Error getting HTML of description: %s", err)
return
}
// fill in the job struct
jobDetails := job{
Title: e.ChildText("h2[class=view-job-details__title]"),
Logo: trimmedLogo,
Company: e.ChildText(".bullet-inline-list > a:first-child"),
Location: e.ChildText(".bullet-inline-list > a:nth-child(2)"),
Type: e.ChildText(".bullet-inline-list > a:nth-child(3)"),
Description: descriptionHTML,
Link: e.Request.URL.String(),
Skills: skillChecker(e.ChildText("content.text-block__content > span")),
Scraped: time.Now().String(),
Source: baseUrl,
}
jobs = append(jobs, jobDetails)
jobCount++
fmt.Println("Scraped job", jobCount)
if jobCount >= maxJobs {
jobsToJson(file, jobs, fName)
return
}
})
// Handle pagination
c.OnHTML("a.page-link", func(e *colly.HTMLElement) {
nextPage := e.Attr("href")
if nextPage != "" {
fullNextPage := baseUrl + nextPage
e.Request.Visit(fullNextPage)
}
})
c.Visit(searchString)
}
func scrapeItJobBank() {
// declare and initialize variables
var (
jobs []job
jobCount int
fName = "it-jobbank.json"
maxJobs = 20
baseUrl = "https://www.it-jobbank.dk"
searchString = "https://www.it-jobbank.dk/jobsoegning/udvikling"
file, err = os.Create(fName)
)
if err != nil {
log.Fatalf("Cannot create file %q: %s", fName, err)
}
defer file.Close()
// Instantiate default collector
c := colly.NewCollector(
// visit only the hub
colly.AllowedDomains("www.it-jobbank.dk", "it-jobbank.dk"),
// Cache responses to prevent multiple requests
// colly.CacheDir("./itjobbank_cache"),
)
// Instantiate a new collector to visit the job details page
detailsCollector := colly.NewCollector(
colly.AllowedDomains("www.it-jobbank.dk", "it-jobbank.dk"),
// Cache responses to prevent multiple requests
colly.CacheDir("./itjobbank_cache"))
// On every <div> element with class "card__content attribute call callback
c.OnHTML("div[class=result]", func(e *colly.HTMLElement) {
if jobCount >= maxJobs {
return
}
// Get the title and ensure it doesn't contain any excluded words
title := e.ChildText("h3.job-title > a")
for _, excludedWord := range excluded {
if strings.Contains(strings.ToLower(title), excludedWord) {
return
}
}
fullLink := e.ChildAttr("h3.job-title > a", "href")
detailsCollector.Visit(fullLink)
})
detailsCollector.OnRequest(func(r *colly.Request) {
fmt.Println("Visiting", r.URL.String())
})
detailsCollector.OnHTML("section > div", func(e *colly.HTMLElement) {
// get the description as html
descriptionHTML, err := e.DOM.Find("div[id=job_ad]").Html()
if err != nil {
log.Printf("Error getting HTML of description: %s", err)
return
}
// Check if the job is paid
checkIfPaid(descriptionHTML)
// fill in the job struct
title := e.ChildText("h1.title")
if title == "" {
title = e.ChildText("h1[id=jobtitle]")
}
jobDetails := job{
Title: title,
Logo: baseUrl + e.ChildAttr("div.company-logo > img", "src"),
Company: e.ChildText("p.published"),
Location: e.ChildText("div.job-location > p.caption"),
Type: checkIfStudent(descriptionHTML),
Description: descriptionHTML,
Link: e.Request.URL.String(),
Skills: skillChecker(descriptionHTML),
Scraped: time.Now().String(),
Source: baseUrl,
}
jobs = append(jobs, jobDetails)
jobCount++
fmt.Println("Scraped job", jobCount)
if jobCount >= maxJobs {
jobsToJson(file, jobs, fName)
return
}
})
// Handle pagination
c.OnHTML("a.page-link", func(e *colly.HTMLElement) {
if jobCount >= maxJobs {
return
}
nextPage := e.Attr("href")
if nextPage != "" {
e.Request.Visit(nextPage)
}
})
c.Visit(searchString)
}
func main() {
scrapeHub()
scrapeItJobBank()
}

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# The Hub Scraper
# IT jobs scraper
This is a simple scraper that extracts job details from the [The Hub](https://thehub.io) website.
This is a simple scraper that extracts job details from the [The Hub](https://thehub.io) website and itjobbank.
## Filtering
The scraper filters out a list of keywords like senior, architect etc. as I wrote it for entry and mid level roles. It also filters out unpaid form the hub, and keyword based from itjobbank.
## Usage
@ -10,4 +15,4 @@ To run the scraper, simply execute the following command:
go run scraper.go
```
The scraper will create a `jobs.json` file in the current directory, which contains a list of job details in JSON format.
The scraper will create a `thehub.json` and `itjobbank.json` file in the current directory, which contains a list of job details in JSON format. It caches the pages, so very light on resources and requests.

3
run-scrapers.sh Normal file
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#!/bin/bash
cd /home/admin/sw-jobs-go
go run go-scraper >> scraper.log 2>&1

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package main
import (
"encoding/json"
"fmt"
"log"
"os"
"strings"
"github.com/gocolly/colly"
)
type job struct {
Title string `json:"title"`
Logo string `json:"logo"`
Company string `json:"company"`
Location string `json:"location"`
Type string `json:"type"`
Description string `json:"description"`
Link string `json:"link"`
Skills skills `json:"skills"`
}
type skills struct {
React bool `json:"react"`
Python bool `json:"python"`
Golang bool `json:"golang"`
Svelte bool `json:"svelte"`
Nextjs bool `json:"nextjs"`
Typescript bool `json:"typescript"`
}
func skillChecker(description string) skills {
return skills{
React: strings.Contains(description, "React"),
Python: strings.Contains(description, "Python"),
Golang: strings.Contains(description, "Go"),
Svelte: strings.Contains(description, "Svelte"),
Nextjs: strings.Contains(description, "Next.js"),
Typescript: strings.Contains(description, "TypeScript"),
}
}
// Slice to store job details
var jobs []job
func main() {
fName := "jobs.json"
file, err := os.Create(fName)
if err != nil {
log.Fatalf("Cannot create file %q: %s", fName, err)
}
defer file.Close()
baseUrl := "https://thehub.io"
searchString := "https://thehub.io/jobs?roles=frontenddeveloper&roles=fullstackdeveloper&roles=backenddeveloper&roles=devops&paid=true&countryCode=DK&sorting=newJobs"
// Instantiate default collector
c := colly.NewCollector(
// visit only the hub
colly.AllowedDomains("www.thehub.io", "thehub.io"),
// Cache responses to prevent multiple requests
colly.CacheDir("./thehub_cache"),
)
// Slice of excluded words in the job titles
excluded := []string{"senior", "lead"}
// Instantiate a new collector to visit the job details page
detailsCollector := c.Clone()
// On every <div> element with class "card__content attribute call callback
c.OnHTML("div[class=card__content]", func(e *colly.HTMLElement) {
// Get the title and ensure it doesn't contain any excluded words
title := e.ChildText("span.card-job-find-list__position")
for _, excludedWord := range excluded {
if strings.Contains(strings.ToLower(title), excludedWord) {
return
}
}
link := e.ChildAttr("a", "href")
fullLink := baseUrl + link
detailsCollector.Visit(fullLink)
})
detailsCollector.OnRequest(func(r *colly.Request) {
fmt.Println("Visiting", r.URL.String())
})
detailsCollector.OnHTML("div.view-job-details", func(e *colly.HTMLElement) {
// Get logo and trim the url
logo := e.ChildAttr("div.media-item__image", "style")
cutLeft := "background-image:url("
cutRight := ");"
trimmedLogo := strings.Trim(logo, cutLeft+cutRight)
// Get company name
jobDetails := job{
Title: e.ChildText("h2[class=view-job-details__title]"),
Logo: trimmedLogo,
Company: e.ChildText(".bullet-inline-list > a:first-child"),
Location: e.ChildText(".bullet-inline-list > a:nth-child(2)"),
Type: e.ChildText(".bullet-inline-list > a:nth-child(3)"),
Description: e.ChildText("content.text-block__content > span"),
Link: e.Request.URL.String(),
Skills: skillChecker(e.ChildText("content.text-block__content > span")),
}
jobs = append(jobs, jobDetails)
})
// Handle pagination
c.OnHTML("a.page-link", func(e *colly.HTMLElement) {
nextPage := e.Attr("href")
if nextPage != "" {
fullNextPage := baseUrl + nextPage
fmt.Println("Visiting next page:", fullNextPage)
e.Request.Visit(fullNextPage)
}
})
c.Visit(searchString)
// Encode jobs slice to JSON
encoder := json.NewEncoder(file)
encoder.SetIndent("", " ") // Pretty-print with indentation
if err := encoder.Encode(jobs); err != nil {
log.Fatalf("Cannot write to file %q: %s", fName, err)
}
fmt.Println("Job details successfully written to", fName)
}