readme markdown

.gitignore

@@ -1,2 +1 @@
-/thehub_cache
-/jobs.json
+/lambda-package

build.sh

@@ -0,0 +1,31 @@
+#!/bin/bash
+
+# Set variables
+PACKAGE_DIR="./lambda-package"
+BUILD_FILE="bootstrap"
+ZIP_FILE="lambda-deployment.zip"
+SOURCE_FILE="main.go"
+
+# Delete the content of the lambda-package directory
+rm -rf $PACKAGE_DIR/*
+echo "Deleted the content of $PACKAGE_DIR"
+
+# Set environment variables and build the Go project
+GOOS=linux GOARCH=arm64 go build -o $BUILD_FILE -tags lambda.norpc $SOURCE_FILE
+echo "Built the Go project with GOOS=linux and GOARCH=arm64"
+
+# Move the build file to the lambda-package directory
+mv $BUILD_FILE $PACKAGE_DIR/
+echo "Moved the build file to $PACKAGE_DIR"
+
+# Change directory to lambda-package
+cd $PACKAGE_DIR
+
+# Zip the contents of lambda-package into lambda-deployment.zip
+zip -r $ZIP_FILE *
+echo "Zipped the contents of $PACKAGE_DIR into $ZIP_FILE"
+
+# Return to the original directory
+cd -
+
+echo "Script completed successfully"

go.mod

@@ -8,6 +8,7 @@ require (
 	github.com/antchfx/htmlquery v1.3.1 // indirect
 	github.com/antchfx/xmlquery v1.4.0 // indirect
 	github.com/antchfx/xpath v1.3.0 // indirect
+	github.com/aws/aws-lambda-go v1.47.0 // indirect
 	github.com/gobwas/glob v0.2.3 // indirect
 	github.com/gocolly/colly v1.2.0 // indirect
 	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect

go.sum

@@ -8,6 +8,8 @@ github.com/antchfx/xmlquery v1.4.0 h1:xg2HkfcRK2TeTbdb0m1jxCYnvsPaGY/oeZWTGqX/0h
 github.com/antchfx/xmlquery v1.4.0/go.mod h1:Ax2aeaeDjfIw3CwXKDQ0GkwZ6QlxoChlIBP+mGnDFjI=
 github.com/antchfx/xpath v1.3.0 h1:nTMlzGAK3IJ0bPpME2urTuFL76o4A96iYvoKFHRXJgc=
 github.com/antchfx/xpath v1.3.0/go.mod h1:i54GszH55fYfBmoZXapTHN8T8tkcHfRgLyVwwqzXNcs=
+github.com/aws/aws-lambda-go v1.47.0 h1:0H8s0vumYx/YKs4sE7YM0ktwL2eWse+kfopsRI1sXVI=
+github.com/aws/aws-lambda-go v1.47.0/go.mod h1:dpMpZgvWx5vuQJfBt0zqBha60q7Dd7RfgJv23DymV8A=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/gobwas/glob v0.2.3 h1:A4xDbljILXROh+kObIiy5kIaPYD8e96x1tgBhUI5J+Y=
 github.com/gobwas/glob v0.2.3/go.mod h1:d3Ez4x06l9bZtSvzIay5+Yzi0fmZzPgnTbPcKjJAkT8=

main.go

@@ -1,12 +1,12 @@
 package main
 
 import (
-	"encoding/json"
+	"context"
 	"fmt"
-	"log"
-	"os"
 	"strings"
+	"time"
 
+	"github.com/aws/aws-lambda-go/lambda"
 	"github.com/gocolly/colly"
 )
 
@@ -30,6 +30,13 @@ type skills struct {
 	Typescript bool `json:"typescript"`
 }
 
+var (
+	jobs      []job
+	lastFetch time.Time
+	cacheTTL  = time.Minute * 5
+	jobLimit  = 20
+)
+
 func skillChecker(description string) skills {
 	return skills{
 		React:      strings.Contains(description, "React"),
@@ -41,34 +48,32 @@ func skillChecker(description string) skills {
 	}
 }
 
-// Slice to store job details
-var jobs []job
+func fetchData() error {
 
-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"),
+		colly.CacheDir("./tmp"),
 	)
 
 	// 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()
+
+	// Limit the number of jobs to fetch
+	jobCount := 0
+
 	// On every <div> element with class "card__content attribute call callback
 	c.OnHTML("div[class=card__content]", func(e *colly.HTMLElement) {
+		// Return if the job limit has been reached
+		if jobCount >= jobLimit {
+			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 {
@@ -87,6 +92,9 @@ func main() {
 	})
 
 	detailsCollector.OnHTML("div.view-job-details", func(e *colly.HTMLElement) {
+		if jobCount >= jobLimit {
+			return
+		}
 		// Get logo and trim the url
 
 		logo := e.ChildAttr("div.media-item__image", "style")
@@ -106,6 +114,7 @@ func main() {
 			Skills:      skillChecker(e.ChildText("content.text-block__content > span")),
 		}
 		jobs = append(jobs, jobDetails)
+		jobCount++
 	})
 	// Handle pagination
 	c.OnHTML("a.page-link", func(e *colly.HTMLElement) {
@@ -116,15 +125,32 @@ func main() {
 			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)
+	// Visit the initial URL to start scraping
+	err := c.Visit("https://thehub.io/jobs?roles=frontenddeveloper&roles=fullstackdeveloper&roles=backenddeveloper&search=developer&paid=true&countryCode=DK&sorting=newJobs")
+	if err != nil {
+		return err
+	}
+	return nil
 }
 
-	fmt.Println("Job details successfully written to", fName)
+func handler(ctx context.Context) ([]job, error) {
+	// Check if cache is valid
+	if time.Since(lastFetch) < cacheTTL && len(jobs) > 0 {
+		return jobs, nil
+	}
+
+	// Fetch new data
+	err := fetchData()
+	if err != nil {
+		return nil, err
+	}
+
+	// Update cache timestamp
+	lastFetch = time.Now()
+
+	return jobs, nil
+}
+
+func main() {
+	lambda.Start(handler)
 }

readme.md

@@ -1,13 +1,13 @@
 # The Hub Scraper
 
-This is a simple scraper that extracts job details from the [The Hub](https://thehub.io) website.
+deprecated as lambda was a bad solution for this, without setting up dynamodb, api etc. This will go live in a ec2 so it can write to local storage instead of running on demand.
 
-## Usage
+Go is fast but free tier lambda is not and I am not yet a smart man.
 
-To run the scraper, simply execute the following command:
+<del>This is  a simple scraper that extracts job details from the [The Hub](https://thehub.io) website.</del>
 
-```bash
-go run scraper.go
-```
+<del>It's a fork of the original [The Hub Scraper](https://gitea.rannes.dev/rannes.dev/sw-jobs-go) by [Rannes](https://gitea.rannes.dev/rannes.dev).</del>
 
-The scraper will create a `jobs.json` file in the current directory, which contains a list of job details in JSON format.
+<del>## Usage</del>
+
+<del>To run the scraper zip it deploy it to AWS Lambda and then call the function. </del>