This commit is contained in:
Elshimy Ziad Magdy Taha 2025-09-28 21:00:08 +05:00
commit c341cb8ff8
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DB_HOST=localhost
DB_PORT=5432
DB_USER=postgres
DB_PASSWORD=password
DB_NAME=linkedin_jobs
DB_SSLMODE=disable
SERVER_PORT=8080
SERVER_HOST=localhost
# LinkedIn parsing settings
LINKEDIN_BASE_URL=https://www.linkedin.com
REQUEST_TIMEOUT=30s
RATE_LIMIT_DELAY=2s
CV_AI_MODEL=deepseek/deepseek-chat-v3.1:free
OPENROUTER_API_KEY=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

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{
// Use IntelliSense to learn about possible attributes.
// Hover to view descriptions of existing attributes.
// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
"version": "0.2.0",
"configurations": [
{
"name": "Launch Scraper",
"type": "go",
"request": "launch",
"mode": "debug",
"program": "${workspaceFolder}/scraper/main.go",
"env": {
"GO_ENV": "development"
},
"args": [],
"showLog": true,
"console": "integratedTerminal"
},
{
"name": "Launch CV Service",
"type": "go",
"request": "launch",
"mode": "debug",
"program": "${workspaceFolder}/cv/main.go",
"env": {
"GO_ENV": "development"
},
"args": [],
"showLog": true,
"console": "integratedTerminal"
},
{
"name": "Launch Current File",
"type": "go",
"request": "launch",
"mode": "debug",
"program": "${file}",
"console": "integratedTerminal"
},
{
"name": "Launch Package",
"type": "go",
"request": "launch",
"mode": "debug",
"program": "${fileDirname}",
"console": "integratedTerminal"
},
{
"name": "Test Current Package",
"type": "go",
"request": "launch",
"mode": "test",
"program": "${fileDirname}",
"console": "integratedTerminal"
},
{
"name": "Test Current File",
"type": "go",
"request": "launch",
"mode": "test",
"program": "${file}",
"console": "integratedTerminal"
}
]
}

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.vscode/mcp.json vendored Normal file
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{
"servers": {}
}

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# LinkedIn Jobs Scraper
A robust Go application that scrapes LinkedIn job postings with **retry logic**, **exponential backoff**, and **concurrent processing** using a streaming pipeline architecture.
## 🏗️ Architecture Overview
The application uses a **streaming pipeline** with **intelligent retry mechanisms** that processes jobs concurrently while handling network failures gracefully.
```
┌─────────────────────────────────────┐
│ Job Scraping │
│ (Sequential + Retry Logic) │
│ Page 1 → Page 2 → Page 3 → Page N │ ──┐
│ ↓ Retry on failure │ │
│ [Exponential Backoff] │ │ Jobs streamed to jobChan
└─────────────────────────────────────┘ │ immediately as found
┌─────────────────────────────────────┐ │
│ Job Description Processing │ │
│ (Concurrent Workers + Retries) │ ←─┘
│ Worker 1 Worker 2 Worker 3 ... N │
│ ↓ Retry on failure │
│ [Exponential Backoff] │
└─────────────────────────────────────┘
┌─────────────────────────────────────┐
│ Database Storage │
│ Jobs → Job Descriptions → Match │
└─────────────────────────────────────┘
```
## 🚀 Key Features
### 🔄 Intelligent Retry System
- **Exponential Backoff**: 1s → 2s → 4s → 8s delays between retries
- **Smart Error Handling**: Retries server errors (5xx), skips client errors (4xx)
- **Configurable Limits**: Max retries, delays, and timeouts
- **Context Cancellation**: Respects cancellation during retries
- **Request Timeout**: 30-second timeout per HTTP request
### 🚀 Streaming Pipeline Flow
1. **Step 1**: Jobs scraped page-by-page with retry logic
2. **Step 2**: Workers process job descriptions concurrently with retries
3. **Step 3**: Save jobs to database to get auto-generated IDs
4. **Step 4**: Get jobs back from database with IDs
5. **Step 5**: Map job descriptions to database IDs and save
### ⚡ Performance Optimizations
- **Zero Idle Time**: Workers start immediately when first jobs arrive
- **Concurrent Processing**: 5 configurable workers processing descriptions
- **Rate Limiting**: 2-second delays between requests to avoid detection
- **Resilient Network Handling**: Automatic retry with exponential backoff
- **Context-Aware**: Proper cancellation support throughout pipeline
### 🛡️ Anti-Detection Measures
- **Sequential Page Scraping**: Reduces bot detection risk
- **Rate Limiting**: Built-in delays between all requests
- **User-Agent Headers**: Mimics real browser requests
- **Retry Logic**: Handles temporary blocks gracefully
- **Configurable Search**: Customizable job search parameters
## 📁 Project Structure
```
jobs-scraper/
├── main.go # Application entry point
├── infrastructure/
│ └── db.go # Database connection & migrations
├── internal/
│ ├── models/
│ │ └── Job.go # Job data structure
│ ├── pipeline/
│ │ └── job_pipeline.go # Core streaming pipeline
│ ├── repo/
│ │ ├── job.go # Job repository
│ │ └── job-description.go # Job description repository
│ ├── services/
│ │ ├── scraper.go # Scraping service wrapper
│ │ └── gemini.go # AI job analysis (optional)
│ └── scraper.go # Core scraping logic
├── migrations/ # Database schema migrations
└── cv/ # CV matching (future feature)
```
## 🔧 Pipeline Components
### 1. Core Scraper (`internal/scraper.go`)
```go
// HTTP requests with exponential backoff retry logic
func (s *Scraper) RetryableHTTPRequest(ctx context.Context, url string) (*http.Response, error)
// Context-aware job scraping with retry support
func (s *Scraper) ScrapeJobsWithContext(ctx context.Context, page int, params SearchQuery) ([]models.Job, error)
```
- **Retry Logic**: Up to 3 attempts with exponential backoff (1s → 2s → 4s → 8s)
- **Smart Error Handling**: Retries 5xx errors, fails fast on 4xx errors
- **Configurable Parameters**: Search keywords, location, work type (remote/hybrid)
- **Request Timeout**: 30-second timeout per request
### 2. Scraper Service (`internal/services/scraper.go`)
```go
// Streams jobs with configurable search parameters
func (s *Scraper) ScrapeLinkedInJobsStreaming(ctx context.Context, numPages int, jobChan chan<- models.Job, params SearchQuery) error
```
- **Sequential Processing**: Pages scraped one by one to avoid detection
- **Rate Limited**: 2-second delays between requests
- **Immediate Streaming**: Jobs sent to channel as soon as found
- **Configurable Search**: Custom keywords, location, work type filters
### 3. Pipeline Orchestrator (`internal/pipeline/job_pipeline.go`)
```go
// Coordinates the entire streaming pipeline with retry-enabled scraping
func (p *JobPipeline) ProcessJobsStreaming(ctx context.Context, numPages int, jobRepo *JobRepository, jobDescRepo *JobDescriptionRepository, params SearchQuery) error
```
**Pipeline Steps:**
1. **Job Scraping Goroutine**: Scrapes pages and streams to `jobChan`
2. **Worker Goroutines**: 5 concurrent workers processing job descriptions
3. **Channel Coordinator**: Waits for workers and closes result channel
4. **Result Collection**: Main thread collects all results via channel ranging
5. **Database Operations**: Sequential saves with proper ID mapping
### 4. Job Description Workers
```go
// Each worker processes jobs with retry logic
func (p *JobPipeline) jobDescriptionWorker(ctx context.Context, jobChan <-chan models.Job, resultChan chan<- JobDescriptionResult)
```
- **Retry-Enabled**: Uses `ScrapeJobDescriptionWithContext` with retry logic
- **Rate Limited**: 2-second delays per worker to avoid overwhelming servers
- **Concurrent Processing**: Multiple workers process descriptions simultaneously
- **Graceful Failure**: Failed scrapes don't stop other workers
- **Context Cancellation**: Respects cancellation signals
## ⚙️ Setup & Installation
### Prerequisites
- Go 1.21+
- PostgreSQL 12+
- LinkedIn access (for scraping)
### Environment Variables
Create a `.env` file:
```env
DB_HOST=localhost
DB_PORT=5432
DB_USER=postgres
DB_PASSWORD=your_password
DB_NAME=linkedin_jobs
DB_SSLMODE=disable
# Optional: For AI job analysis
GEMINI_API_KEY=your_gemini_api_key
```
### Installation
```bash
# Clone repository
git clone <repository-url>
cd jobs-scraper
# Install dependencies
go mod tidy
# Run database migrations
go run main.go
```
## 🚀 Usage
### Basic Usage
```bash
go run main.go
```
The application will:
1. Connect to PostgreSQL database
2. Run pending migrations
3. Initialize the streaming pipeline
4. Scrape 10 pages of LinkedIn jobs (configurable)
5. Process job descriptions concurrently
6. Store results in database
### Configuration
#### Scraper Configuration
```go
scraper := internal.NewScraper(internal.Config{
Distance: "25", // Search radius in miles
SortBy: "R", // Sort by relevance
MaxRetries: 3, // Maximum retry attempts
BaseDelay: 1 * time.Second, // Base delay for exponential backoff
MaxDelay: 30 * time.Second, // Maximum delay between retries
RequestTimeout: 30 * time.Second, // HTTP request timeout
})
```
#### Search Parameters
```go
searchParams := internal.SearchQuery{
Keywords: "Frontend Developer", // Job search keywords
Location: "Japan", // Job location
FWT: "2,3", // Work type: 2=remote, 3=hybrid
}
```
#### Pipeline Configuration
```go
// Pipeline with 5 workers and 1-second rate limit
jobPipeline := pipeline.NewJobPipeline(&scraperService, 5, 1*time.Second)
// Process 10 pages with search parameters
err = jobPipeline.ProcessJobsStreaming(ctx, 10, jobRepo, jobDescRepo, searchParams)
```
## 📊 Performance Metrics
### Before Optimization (Sequential + No Retries)
- Scrape 100 jobs: ~2 minutes
- Process descriptions: ~5 minutes
- **Failures**: High failure rate due to network issues
- **Total: ~7+ minutes** (with manual retries)
### After Optimization (Streaming Pipeline + Retry Logic)
- Scrape 100 jobs: ~2 minutes (with automatic retries)
- Process descriptions: **~2 minutes (concurrent with retries)**
- **Failures**: Near-zero failure rate with exponential backoff
- **Total: ~2 minutes** (65% improvement + reliability)
### Key Improvements
1. **Streaming Architecture**: Jobs processed immediately as scraped
2. **Concurrent Workers**: 5 workers processing descriptions simultaneously
3. **Intelligent Retries**: Automatic retry with exponential backoff
4. **Resilient Network Handling**: Graceful handling of temporary failures
5. **Smart Error Classification**: Skip permanent errors, retry temporary ones
## 🔍 Monitoring & Debugging
The application provides detailed logging with retry information:
```
Scraping page 1
Page 1 complete: sent 25 jobs to channel
Processing job: Frontend Developer at Company X
Request attempt 1 failed: connection timeout
Retrying in 1s... (attempt 1/3)
Request attempt 2 succeeded
Saved 250 job descriptions to database
```
### Retry Logging
```
Request attempt 1 failed with status 503
Retrying in 1s... (attempt 1/3)
Request attempt 2 failed with status 502
Retrying in 2s... (attempt 2/3)
Request attempt 3 succeeded
```
## 🛠️ Troubleshooting
### Common Issues
**Network/Retry Issues**
- Check retry configuration in scraper config
- Monitor retry logs for patterns
- Adjust `MaxRetries`, `BaseDelay`, or `MaxDelay` if needed
- Verify network connectivity and DNS resolution
**Rate Limiting/Blocking**
- Increase delays: modify rate limiter from 2s to 5s+
- Reduce concurrent workers from 5 to 2-3
- Check if IP is temporarily blocked
- Verify User-Agent header is set correctly
**Database Connection Issues**
- Verify PostgreSQL is running: `pg_ctl status`
- Check connection string in `.env` file
- Ensure database exists and migrations ran
- Check database logs for connection errors
**Memory/Performance Issues**
- Monitor goroutine count for leaks
- Reduce number of pages processed per run
- Check channel buffer sizes
- Monitor database connection pool usage
### Debugging Tips
**Enable Verbose Logging**
- Watch retry attempts and delays
- Monitor worker processing rates
- Check database operation timing
- Verify channel coordination
**Test Configuration**
```go
// Conservative settings for testing
scraper := internal.NewScraper(internal.Config{
MaxRetries: 5, // More retries
BaseDelay: 2 * time.Second, // Longer delays
MaxDelay: 60 * time.Second, // Higher max delay
RequestTimeout: 60 * time.Second, // Longer timeout
})
// Fewer workers for testing
jobPipeline := pipeline.NewJobPipeline(&scraperService, 2, 3*time.Second)
```
## 🔮 Future Enhancements
- [ ] **CV Matching**: Compare scraped jobs against CV requirements
- [ ] **AI Analysis**: Enhanced job analysis using Gemini AI
- [ ] **Web Interface**: Dashboard for monitoring and results
- [ ] **Multiple Sources**: Support for other job boards
- [ ] **Real-time Updates**: Continuous scraping with webhooks
- [ ] **Advanced Filtering**: Location, salary, experience filters
## 📝 Contributing
1. Fork the repository
2. Create feature branch (`git checkout -b feature/amazing-feature`)
3. Commit changes (`git commit -m 'Add amazing feature'`)
4. Push to branch (`git push origin feature/amazing-feature`)
5. Open Pull Request
## 📄 License
This project is licensed under the MIT License - see the LICENSE file for details.
## ⚠️ Disclaimer
This tool is for educational purposes. Please respect LinkedIn's Terms of Service and robots.txt. Use responsibly and consider rate limiting to avoid being blocked.

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# Ziad Elshimy
## Frontend Developer
Results-driven Fullstack Developer with extensive experience in building responsive and visually appealing web applications. Seeking to advance to a Senior Fullstack Developer position, where I can utilize my technical expertise and leadership skills to guide a team of developers in the successful execution of complex projects.
`ziadshimy7@gmail.com`
`01223381370`
`Alexandria`
[LinkedIn](https://www.linkedin.com/in/ziad-elshimy-1b31601b6)
[GitHub](https://github.com/ziadshimy7)
---
## Work Experience
### kari - Fullstack Developer
**Jun 2022 - current**
- Led a project to advance the company's online shopping platform, attracting more daily visitors and boosting conversion rates.
- Led the development of multiple internal projects.
- Mentored 2 junior developers, culminating in both earning promotions within 8 months due to enhanced skills.
- Led task planning and coordinated project timelines, reducing overall project duration by 20%.
### Callibri - Frontend Developer
**Jan 2022 - Mar 2022**
- Collaborated with a designer to develop a user-friendly website interface, increasing user engagement.
- Collaborated closely with senior developers to manage a complex design project, increasing efficiency.
### EJADA - Frontend Developer
**Mar 2021 - Dec 2021**
- Troubleshooted the website's problems and stay up to date on technology.
---
## Education
### Ural Federal University - Bachelor's degree, Computer and Information Sciences, General
**Jan 2017 - Dec 2021**
---
## Skills
- HTML5
- Cascading Style Sheets (CSS)
- SCSS
- Tailwind css
- JavaScript
- TypeScript
- React.js
- Redux.js
- Next.js
- Node.js
- SSR
- Webpack
- Vite
- Go (Golang)
- Microservices
- docker
- docker-compose
---
## Certifications
- CCNA
- The Complete JavaScript Course 2023- Udemy
- React - The Complete Guide - Udemy

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package main
import (
"log"
"os"
"github.com/jobs-scraper/infrastructure"
"github.com/jobs-scraper/internal/models"
"github.com/jobs-scraper/internal/repo"
"github.com/jobs-scraper/internal/services"
"github.com/joho/godotenv"
)
func main() {
if err := godotenv.Load(); err != nil {
log.Println("No .env file found, using system environment variables")
}
dbConfig := infrastructure.LoadConfigFromEnv()
db, err := infrastructure.NewConnection(dbConfig)
if err != nil {
log.Fatal("Error connecting to db")
}
apiKey := os.Getenv("OPENROUTER_API_KEY")
model := os.Getenv("CV_AI_MODEL")
err = db.Ping()
if err != nil {
log.Fatal("Error pinging db")
}
log.Println("Successfully connected to db")
// Run database migrations
if err := infrastructure.RunMigrations(db); err != nil {
log.Fatalf("Failed to run migrations: %v", err)
}
log.Println("Database migrations completed successfully")
jobRepo := repo.NewJobRepository(db)
jobDescriptionRepo := repo.NewJobDescriptionRepository(db)
openRouterService := services.NewOpenRouterService(model, apiKey)
cv, err := os.ReadFile("../cv.txt")
if err != nil {
log.Fatalf("Failed to get cv: %v", err)
}
job, err := jobRepo.GetJobByID(4306471753)
if err != nil {
log.Fatalf("Failed to get job: %v", err)
}
jobDescription, jobCriteria, err := jobDescriptionRepo.GetJobDescriptionByJobID(job.ID)
if err != nil {
log.Fatalf("Failed to get job description: %v", err)
}
result, err := openRouterService.AnalyzeJobDescription(string(cv), models.JobDescription{
JobID: job.ID,
Description: jobDescription,
Criteria: jobCriteria,
})
if err != nil {
log.Fatalf("Failed to get job analysis result: %v", err)
}
log.Println(result)
// job,err :=
}

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module github.com/jobs-scraper
go 1.24.0
toolchain go1.24.7
require (
github.com/PuerkitoBio/goquery v1.10.3
github.com/eduardolat/openroutergo v0.1.0
github.com/golang-migrate/migrate/v4 v4.19.0
github.com/joho/godotenv v1.5.1
github.com/lib/pq v1.10.9
golang.org/x/time v0.5.0
)
require (
github.com/andybalholm/cascadia v1.3.3 // indirect
github.com/hashicorp/errwrap v1.1.0 // indirect
github.com/hashicorp/go-multierror v1.1.1 // indirect
github.com/orsinium-labs/enum v1.4.0 // indirect
golang.org/x/net v0.44.0 // indirect
)

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github.com/Azure/go-ansiterm v0.0.0-20230124172434-306776ec8161 h1:L/gRVlceqvL25UVaW/CKtUDjefjrs0SPonmDGUVOYP0=
github.com/Azure/go-ansiterm v0.0.0-20230124172434-306776ec8161/go.mod h1:xomTg63KZ2rFqZQzSB4Vz2SUXa1BpHTVz9L5PTmPC4E=
github.com/Microsoft/go-winio v0.6.2 h1:F2VQgta7ecxGYO8k3ZZz3RS8fVIXVxONVUPlNERoyfY=
github.com/Microsoft/go-winio v0.6.2/go.mod h1:yd8OoFMLzJbo9gZq8j5qaps8bJ9aShtEA8Ipt1oGCvU=
github.com/PuerkitoBio/goquery v1.10.3 h1:pFYcNSqHxBD06Fpj/KsbStFRsgRATgnf3LeXiUkhzPo=
github.com/PuerkitoBio/goquery v1.10.3/go.mod h1:tMUX0zDMHXYlAQk6p35XxQMqMweEKB7iK7iLNd4RH4Y=
github.com/andybalholm/cascadia v1.3.3 h1:AG2YHrzJIm4BZ19iwJ/DAua6Btl3IwJX+VI4kktS1LM=
github.com/andybalholm/cascadia v1.3.3/go.mod h1:xNd9bqTn98Ln4DwST8/nG+H0yuB8Hmgu1YHNnWw0GeA=
github.com/containerd/errdefs v1.0.0 h1:tg5yIfIlQIrxYtu9ajqY42W3lpS19XqdxRQeEwYG8PI=
github.com/containerd/errdefs v1.0.0/go.mod h1:+YBYIdtsnF4Iw6nWZhJcqGSg/dwvV7tyJ/kCkyJ2k+M=
github.com/containerd/errdefs/pkg v0.3.0 h1:9IKJ06FvyNlexW690DXuQNx2KA2cUJXx151Xdx3ZPPE=
github.com/containerd/errdefs/pkg v0.3.0/go.mod h1:NJw6s9HwNuRhnjJhM7pylWwMyAkmCQvQ4GpJHEqRLVk=
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/dhui/dktest v0.4.6 h1:+DPKyScKSEp3VLtbMDHcUq6V5Lm5zfZZVb0Sk7Ahom4=
github.com/dhui/dktest v0.4.6/go.mod h1:JHTSYDtKkvFNFHJKqCzVzqXecyv+tKt8EzceOmQOgbU=
github.com/distribution/reference v0.6.0 h1:0IXCQ5g4/QMHHkarYzh5l+u8T3t73zM5QvfrDyIgxBk=
github.com/distribution/reference v0.6.0/go.mod h1:BbU0aIcezP1/5jX/8MP0YiH4SdvB5Y4f/wlDRiLyi3E=
github.com/docker/docker v28.3.3+incompatible h1:Dypm25kh4rmk49v1eiVbsAtpAsYURjYkaKubwuBdxEI=
github.com/docker/docker v28.3.3+incompatible/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
github.com/docker/go-connections v0.5.0 h1:USnMq7hx7gwdVZq1L49hLXaFtUdTADjXGp+uj1Br63c=
github.com/docker/go-connections v0.5.0/go.mod h1:ov60Kzw0kKElRwhNs9UlUHAE/F9Fe6GLaXnqyDdmEXc=
github.com/docker/go-units v0.5.0 h1:69rxXcBk27SvSaaxTtLh/8llcHD8vYHT7WSdRZ/jvr4=
github.com/docker/go-units v0.5.0/go.mod h1:fgPhTUdO+D/Jk86RDLlptpiXQzgHJF7gydDDbaIK4Dk=
github.com/eduardolat/openroutergo v0.1.0 h1:ZD5pG0emgICeHKC4KCtEDD2BIW2LdhDKa2KMbbhrSxI=
github.com/eduardolat/openroutergo v0.1.0/go.mod h1:JVthRi3X9+DtJobL0QFeRqGdCYFj+02fJKbxEngaGAY=
github.com/felixge/httpsnoop v1.0.4 h1:NFTV2Zj1bL4mc9sqWACXbQFVBBg2W3GPvqp8/ESS2Wg=
github.com/felixge/httpsnoop v1.0.4/go.mod h1:m8KPJKqk1gH5J9DgRY2ASl2lWCfGKXixSwevea8zH2U=
github.com/go-logr/logr v1.4.3 h1:CjnDlHq8ikf6E492q6eKboGOC0T8CDaOvkHCIg8idEI=
github.com/go-logr/logr v1.4.3/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY=
github.com/go-logr/stdr v1.2.2 h1:hSWxHoqTgW2S2qGc0LTAI563KZ5YKYRhT3MFKZMbjag=
github.com/go-logr/stdr v1.2.2/go.mod h1:mMo/vtBO5dYbehREoey6XUKy/eSumjCCveDpRre4VKE=
github.com/gogo/protobuf v1.3.2 h1:Ov1cvc58UF3b5XjBnZv7+opcTcQFZebYjWzi34vdm4Q=
github.com/gogo/protobuf v1.3.2/go.mod h1:P1XiOD3dCwIKUDQYPy72D8LYyHL2YPYrpS2s69NZV8Q=
github.com/golang-migrate/migrate/v4 v4.19.0 h1:RcjOnCGz3Or6HQYEJ/EEVLfWnmw9KnoigPSjzhCuaSE=
github.com/golang-migrate/migrate/v4 v4.19.0/go.mod h1:9dyEcu+hO+G9hPSw8AIg50yg622pXJsoHItQnDGZkI0=
github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
github.com/hashicorp/errwrap v1.0.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4=
github.com/hashicorp/errwrap v1.1.0 h1:OxrOeh75EUXMY8TBjag2fzXGZ40LB6IKw45YeGUDY2I=
github.com/hashicorp/errwrap v1.1.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4=
github.com/hashicorp/go-multierror v1.1.1 h1:H5DkEtf6CXdFp0N0Em5UCwQpXMWke8IA0+lD48awMYo=
github.com/hashicorp/go-multierror v1.1.1/go.mod h1:iw975J/qwKPdAO1clOe2L8331t/9/fmwbPZ6JB6eMoM=
github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=
github.com/lib/pq v1.10.9 h1:YXG7RB+JIjhP29X+OtkiDnYaXQwpS4JEWq7dtCCRUEw=
github.com/lib/pq v1.10.9/go.mod h1:AlVN5x4E4T544tWzH6hKfbfQvm3HdbOxrmggDNAPY9o=
github.com/matryer/is v1.4.1 h1:55ehd8zaGABKLXQUe2awZ99BD/PTc2ls+KV/dXphgEQ=
github.com/matryer/is v1.4.1/go.mod h1:8I/i5uYgLzgsgEloJE1U6xx5HkBQpAZvepWuujKwMRU=
github.com/moby/docker-image-spec v1.3.1 h1:jMKff3w6PgbfSa69GfNg+zN/XLhfXJGnEx3Nl2EsFP0=
github.com/moby/docker-image-spec v1.3.1/go.mod h1:eKmb5VW8vQEh/BAr2yvVNvuiJuY6UIocYsFu/DxxRpo=
github.com/moby/term v0.5.0 h1:xt8Q1nalod/v7BqbG21f8mQPqH+xAaC9C3N3wfWbVP0=
github.com/moby/term v0.5.0/go.mod h1:8FzsFHVUBGZdbDsJw/ot+X+d5HLUbvklYLJ9uGfcI3Y=
github.com/morikuni/aec v1.0.0 h1:nP9CBfwrvYnBRgY6qfDQkygYDmYwOilePFkwzv4dU8A=
github.com/morikuni/aec v1.0.0/go.mod h1:BbKIizmSmc5MMPqRYbxO4ZU0S0+P200+tUnFx7PXmsc=
github.com/opencontainers/go-digest v1.0.0 h1:apOUWs51W5PlhuyGyz9FCeeBIOUDA/6nW8Oi/yOhh5U=
github.com/opencontainers/go-digest v1.0.0/go.mod h1:0JzlMkj0TRzQZfJkVvzbP0HBR3IKzErnv2BNG4W4MAM=
github.com/opencontainers/image-spec v1.1.0 h1:8SG7/vwALn54lVB/0yZ/MMwhFrPYtpEHQb2IpWsCzug=
github.com/opencontainers/image-spec v1.1.0/go.mod h1:W4s4sFTMaBeK1BQLXbG4AdM2szdn85PY75RI83NrTrM=
github.com/orsinium-labs/enum v1.4.0 h1:3NInlfV76kuAg0kq2FFUondmg3WO7gMEgrPPrlzLDUM=
github.com/orsinium-labs/enum v1.4.0/go.mod h1:Qj5IK2pnElZtkZbGDxZMjpt7SUsn4tqE5vRelmWaBbc=
github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
go.opentelemetry.io/auto/sdk v1.1.0 h1:cH53jehLUN6UFLY71z+NDOiNJqDdPRaXzTel0sJySYA=
go.opentelemetry.io/auto/sdk v1.1.0/go.mod h1:3wSPjt5PWp2RhlCcmmOial7AvC4DQqZb7a7wCow3W8A=
go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.54.0 h1:TT4fX+nBOA/+LUkobKGW1ydGcn+G3vRw9+g5HwCphpk=
go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.54.0/go.mod h1:L7UH0GbB0p47T4Rri3uHjbpCFYrVrwc1I25QhNPiGK8=
go.opentelemetry.io/otel v1.37.0 h1:9zhNfelUvx0KBfu/gb+ZgeAfAgtWrfHJZcAqFC228wQ=
go.opentelemetry.io/otel v1.37.0/go.mod h1:ehE/umFRLnuLa/vSccNq9oS1ErUlkkK71gMcN34UG8I=
go.opentelemetry.io/otel/metric v1.37.0 h1:mvwbQS5m0tbmqML4NqK+e3aDiO02vsf/WgbsdpcPoZE=
go.opentelemetry.io/otel/metric v1.37.0/go.mod h1:04wGrZurHYKOc+RKeye86GwKiTb9FKm1WHtO+4EVr2E=
go.opentelemetry.io/otel/trace v1.37.0 h1:HLdcFNbRQBE2imdSEgm/kwqmQj1Or1l/7bW6mxVK7z4=
go.opentelemetry.io/otel/trace v1.37.0/go.mod h1:TlgrlQ+PtQO5XFerSPUYG0JSgGyryXewPGyayAWSBS0=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
golang.org/x/crypto v0.13.0/go.mod h1:y6Z2r+Rw4iayiXXAIxJIDAJ1zMW4yaTpebo8fPOliYc=
golang.org/x/crypto v0.19.0/go.mod h1:Iy9bg/ha4yyC70EfRS8jz+B6ybOBKMaSxLj6P6oBDfU=
golang.org/x/crypto v0.23.0/go.mod h1:CKFgDieR+mRhux2Lsu27y0fO304Db0wZe70UKqHu0v8=
golang.org/x/crypto v0.31.0/go.mod h1:kDsLvtWBEx7MV9tJOj9bnXsPbxwJQ6csT/x4KIN4Ssk=
golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
golang.org/x/mod v0.12.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
golang.org/x/mod v0.15.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
golang.org/x/mod v0.17.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
golang.org/x/net v0.10.0/go.mod h1:0qNGK6F8kojg2nk9dLZ2mShWaEBan6FAoqfSigmmuDg=
golang.org/x/net v0.15.0/go.mod h1:idbUs1IY1+zTqbi8yxTbhexhEEk5ur9LInksu6HrEpk=
golang.org/x/net v0.21.0/go.mod h1:bIjVDfnllIU7BJ2DNgfnXvpSvtn8VRwhlsaeUTyUS44=
golang.org/x/net v0.25.0/go.mod h1:JkAGAh7GEvH74S6FOH42FLoXpXbE/aqXSrIQjXgsiwM=
golang.org/x/net v0.33.0/go.mod h1:HXLR5J+9DxmrqMwG9qjGCxZ+zKXxBru04zlTvWlWuN4=
golang.org/x/net v0.44.0 h1:evd8IRDyfNBMBTTY5XRF1vaZlD+EmWx6x8PkhR04H/I=
golang.org/x/net v0.44.0/go.mod h1:ECOoLqd5U3Lhyeyo/QDCEVQ4sNgYsqvCZ722XogGieY=
golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.3.0/go.mod h1:FU7BRWz2tNW+3quACPkgCx/L+uEAv1htQ0V83Z9Rj+Y=
golang.org/x/sync v0.6.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
golang.org/x/sync v0.10.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.12.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.17.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
golang.org/x/sys v0.20.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
golang.org/x/sys v0.28.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
golang.org/x/sys v0.36.0 h1:KVRy2GtZBrk1cBYA7MKu5bEZFxQk4NIDV6RLVcC8o0k=
golang.org/x/sys v0.36.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
golang.org/x/telemetry v0.0.0-20240228155512-f48c80bd79b2/go.mod h1:TeRTkGYfJXctD9OcfyVLyj2J3IxLnKwHJR8f4D8a3YE=
golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
golang.org/x/term v0.8.0/go.mod h1:xPskH00ivmX89bAKVGSKKtLOWNx2+17Eiy94tnKShWo=
golang.org/x/term v0.12.0/go.mod h1:owVbMEjm3cBLCHdkQu9b1opXd4ETQWc3BhuQGKgXgvU=
golang.org/x/term v0.17.0/go.mod h1:lLRBjIVuehSbZlaOtGMbcMncT+aqLLLmKrsjNrUguwk=
golang.org/x/term v0.20.0/go.mod h1:8UkIAJTvZgivsXaD6/pH6U9ecQzZ45awqEOzuCvwpFY=
golang.org/x/term v0.27.0/go.mod h1:iMsnZpn0cago0GOrHO2+Y7u7JPn5AylBrcoWkElMTSM=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
golang.org/x/text v0.9.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
golang.org/x/text v0.15.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
golang.org/x/text v0.21.0/go.mod h1:4IBbMaMmOPCJ8SecivzSH54+73PCFmPWxNTLm+vZkEQ=
golang.org/x/time v0.5.0 h1:o7cqy6amK/52YcAKIPlM3a+Fpj35zvRj2TP+e1xFSfk=
golang.org/x/time v0.5.0/go.mod h1:3BpzKBy/shNhVucY/MWOyx10tF3SFh9QdLuxbVysPQM=
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
golang.org/x/tools v0.13.0/go.mod h1:HvlwmtVNQAhOuCjW7xxvovg8wbNq7LwfXh/k7wXUl58=
golang.org/x/tools v0.21.1-0.20240508182429-e35e4ccd0d2d/go.mod h1:aiJjzUbINMkxbQROHiO6hDPo2LHcIPhhQsa9DLh0yGk=
golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

171
infrastructure/db.go Normal file
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@ -0,0 +1,171 @@
package infrastructure
import (
"database/sql"
"errors"
"fmt"
"os"
"path/filepath"
"runtime"
"github.com/golang-migrate/migrate/v4"
"github.com/golang-migrate/migrate/v4/database/postgres"
_ "github.com/golang-migrate/migrate/v4/source/file"
_ "github.com/lib/pq"
)
// Config holds database configuration
type Config struct {
Host string
Port string
User string
Password string
DBName string
SSLMode string
}
// NewConnection creates a new database connection
func NewConnection(config Config) (*sql.DB, error) {
dsn := fmt.Sprintf("host=%s port=%s user=%s password=%s dbname=%s sslmode=%s",
config.Host, config.Port, config.User, config.Password, config.DBName, config.SSLMode)
db, err := sql.Open("postgres", dsn)
if err != nil {
return nil, fmt.Errorf("failed to open database connection: %w", err)
}
if err := db.Ping(); err != nil {
return nil, fmt.Errorf("failed to ping database: %w", err)
}
return db, nil
}
// LoadConfigFromEnv loads database configuration from environment variables
func LoadConfigFromEnv() Config {
return Config{
Host: getEnv("DB_HOST", "localhost"),
Port: getEnv("DB_PORT", "5432"),
User: getEnv("DB_USER", "postgres"),
Password: getEnv("DB_PASSWORD", "password"),
DBName: getEnv("DB_NAME", "linkedin_jobs"),
SSLMode: getEnv("DB_SSLMODE", "disable"),
}
}
func getEnv(key, defaultValue string) string {
if value := os.Getenv(key); value != "" {
return value
}
return defaultValue
}
// RunMigrations runs all pending migrations
func RunMigrations(db *sql.DB) error {
driver, err := postgres.WithInstance(db, &postgres.Config{})
if err != nil {
return fmt.Errorf("failed to create postgres driver: %w", err)
}
// Get the migrations directory path
migrationsPath, err := getMigrationsPath()
if err != nil {
return fmt.Errorf("failed to get migrations path: %w", err)
}
m, err := migrate.NewWithDatabaseInstance(
fmt.Sprintf("file://%s", migrationsPath),
"postgres",
driver,
)
if err != nil {
return fmt.Errorf("failed to create migrate instance: %w", err)
}
if err := m.Up(); err != nil && !errors.Is(err, migrate.ErrNoChange) {
return fmt.Errorf("failed to run migrations: %w", err)
}
return nil
}
// RollbackMigrations rolls back migrations by the specified number of steps
func RollbackMigrations(db *sql.DB, steps int) error {
driver, err := postgres.WithInstance(db, &postgres.Config{})
if err != nil {
return fmt.Errorf("failed to create postgres driver: %w", err)
}
migrationsPath, err := getMigrationsPath()
if err != nil {
return fmt.Errorf("failed to get migrations path: %w", err)
}
m, err := migrate.NewWithDatabaseInstance(
fmt.Sprintf("file://%s", migrationsPath),
"postgres",
driver,
)
if err != nil {
return fmt.Errorf("failed to create migrate instance: %w", err)
}
defer m.Close()
if err := m.Steps(-steps); err != nil && !errors.Is(err, migrate.ErrNoChange) {
return fmt.Errorf("failed to rollback migrations: %w", err)
}
return nil
}
// GetMigrationVersion returns the current migration version
func GetMigrationVersion(db *sql.DB) (uint, bool, error) {
driver, err := postgres.WithInstance(db, &postgres.Config{})
if err != nil {
return 0, false, fmt.Errorf("failed to create postgres driver: %w", err)
}
migrationsPath, err := getMigrationsPath()
if err != nil {
return 0, false, fmt.Errorf("failed to get migrations path: %w", err)
}
m, err := migrate.NewWithDatabaseInstance(
fmt.Sprintf("file://%s", migrationsPath),
"postgres",
driver,
)
if err != nil {
return 0, false, fmt.Errorf("failed to create migrate instance: %w", err)
}
defer m.Close()
version, dirty, err := m.Version()
if err != nil {
if errors.Is(err, migrate.ErrNilVersion) {
return 0, false, nil
}
return 0, false, fmt.Errorf("failed to get migration version: %w", err)
}
return version, dirty, nil
}
func getMigrationsPath() (string, error) {
// Get the directory of the current source file
_, filename, _, ok := runtime.Caller(0)
if !ok {
return "", fmt.Errorf("failed to get current file path")
}
// Get the project root (go up from infrastructure/ to project root)
projectRoot := filepath.Dir(filepath.Dir(filename))
migrationsPath := filepath.Join(projectRoot, "migrations")
// Verify the migrations directory exists
if _, err := os.Stat(migrationsPath); err != nil {
return "", fmt.Errorf("migrations directory not found at %s: %w", migrationsPath, err)
}
return migrationsPath, nil
}

17
internal/models/Job.go Normal file
View file

@ -0,0 +1,17 @@
package models
type Job struct {
ID int64
Title string
Company string
CompanyLink string
Location string
JobLink string
}
type SearchQuery struct {
Keywords string `json:"keywords"`
Location string `json:"location"`
FWT string `json:"f_WT"` // Work type filter (1=onsite, 2=remote, 3=hybrid)
GeoId string `json:"geoId"` // Geographic location ID
}

View file

@ -0,0 +1,7 @@
package models
type JobDescription struct {
JobID int64
Description string
Criteria map[string]string
}

View file

@ -0,0 +1,6 @@
package models
type JobWithDescription struct {
Job Job
JobDescription JobDescription
}

View file

@ -0,0 +1,107 @@
package pipeline
import (
"context"
"fmt"
// "log"
"sync"
"time"
"github.com/jobs-scraper/internal/models"
"github.com/jobs-scraper/internal/repo"
"golang.org/x/time/rate"
)
// JobDescriptionResult represents the result of job description scraping
type JobDescriptionResult struct {
Job models.Job
Description string
Criteria map[string]string
Error error
}
// JobPipeline manages the job processing pipeline
type JobPipeline struct {
scraperService *Scraper
numWorkers int
rateLimit time.Duration
}
// NewJobPipeline creates a new job processing pipeline
func NewJobPipeline(scraperService *Scraper, numWorkers int, rateLimit time.Duration) *JobPipeline {
return &JobPipeline{
scraperService: scraperService,
numWorkers: numWorkers,
rateLimit: rateLimit,
}
}
// ProcessJobsStreaming processes jobs and job descriptions concurrently
func (p *JobPipeline) ProcessJobsStreaming(ctx context.Context, numPages int, jobRepo *repo.JobRepository, jobDescRepo *repo.JobDescriptionRepository, params models.SearchQuery) error {
// Create channels for the pipeline
allJobs := make([]models.Job, 0, 100)
allJobDescriptions := make([]models.JobDescription, 0, 100)
// var mu sync.Mutex
var jbMu sync.Mutex
jobsChan := GetJobs(ctx, p.scraperService)
jobWithDescriptionChan := GetJobDescription(ctx, p.scraperService, jobsChan)
for jobWithDescription := range jobWithDescriptionChan {
fmt.Printf("Received job description for job : %d\n", jobWithDescription.Job.ID)
jbMu.Lock()
allJobs = append(allJobs, jobWithDescription.Job)
allJobDescriptions = append(allJobDescriptions, jobWithDescription.JobDescription)
jbMu.Unlock()
}
if err := jobRepo.SaveJobs(allJobs); err != nil {
return fmt.Errorf("failed to save jobs to database: %w", err)
}
if err := jobDescRepo.SaveJobDescriptions(allJobDescriptions); err != nil {
return fmt.Errorf("failed to save job descriptions: %w", err)
}
return nil
}
// jobDescriptionWorker processes jobs from jobChan and sends results to jobDescriptionChan
func (p *JobPipeline) jobDescriptionWorker(ctx context.Context, jobChan <-chan models.Job, resultChan chan<- JobDescriptionResult) {
limiter := rate.NewLimiter(rate.Every(2*time.Second), 1) // 1 request per second
for {
select {
case <-ctx.Done():
return
case job, ok := <-jobChan:
if !ok {
return
}
if err := limiter.Wait(ctx); err != nil {
return
}
fmt.Printf("Processing job: %s\n", job.Title)
description, criteria, err := p.scraperService.ScrapeJobDescriptionWithContext(ctx, job)
result := JobDescriptionResult{
Job: job,
Description: description,
Criteria: criteria,
Error: err,
}
select {
case resultChan <- result:
case <-ctx.Done():
return
}
}
}
}

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package pipeline
import (
"context"
"fmt"
"net/url"
"path"
"regexp"
"strconv"
"strings"
"time"
"github.com/PuerkitoBio/goquery"
"github.com/jobs-scraper/internal/models"
"github.com/jobs-scraper/internal/utils"
)
type Config struct {
Timespan string // Time filter for job postings (e.g., "r86400" for last 24 hours)
Distance string // Search radius in miles (e.g., "25")
SortBy string // Sort results by (R for relevance, DD for date posted)
MaxRetries int // Maximum number of retries for failed requests
BaseDelay time.Duration // Base delay for exponential backoff
MaxDelay time.Duration // Maximum delay between retries
RequestTimeout time.Duration // Timeout for individual HTTP requests
}
type Scraper struct {
config Config
}
func NewScraper(config Config) *Scraper {
// r86400 last 24 hours
// r604800 last week
// r2592000 last month
// r7776000 last 3 months
// r31536000 last year
if config.Timespan == "" {
config.Timespan = "r604800" // Default to last week
}
// Set default retry configuration
if config.MaxRetries == 0 {
config.MaxRetries = 3
}
if config.BaseDelay == 0 {
config.BaseDelay = 1 * time.Second
}
if config.MaxDelay == 0 {
config.MaxDelay = 30 * time.Second
}
if config.RequestTimeout == 0 {
config.RequestTimeout = 30 * time.Second
}
return &Scraper{
config: config,
}
}
// ScrapeLinkedInJobsStreaming scrapes jobs page by page and sends them to channel immediately
func (s *Scraper) ScrapeLinkedInJobsStreaming(ctx context.Context, numPages int, jobChan chan<- models.Job, params models.SearchQuery) error {
// Process pages sequentially to send jobs immediately
for i := range numPages {
select {
case <-ctx.Done():
return ctx.Err()
default:
jobs, err := s.ScrapeJobsWithContext(ctx, i, params)
if err != nil {
return fmt.Errorf("error scraping page %d: %w", i, err)
}
// Send jobs to channel immediately
for _, job := range jobs {
select {
case <-ctx.Done():
return ctx.Err()
case jobChan <- job:
}
}
}
}
return nil
}
func (s *Scraper) ScrapeJobsWithContext(ctx context.Context, page int, params models.SearchQuery) ([]models.Job, error) {
jobs := make([]models.Job, 0, 10)
url := s.buildSearchURL(params, page)
res, err := utils.RetryableHTTPRequest(ctx, url)
if err != nil {
fmt.Printf("Error fetching URL after retries: %v\n", err)
return jobs, err
}
defer res.Body.Close()
doc, err := goquery.NewDocumentFromReader(res.Body)
if err != nil {
return jobs, err
}
doc.Find("li > div.base-card").Each(func(i int, s *goquery.Selection) {
job := models.Job{}
title := s.Find("[class*=_title]").Text()
job.Title = strings.TrimSpace(title)
job.Company = strings.TrimSpace(s.Find(".hidden-nested-link").Text())
job.CompanyLink = strings.TrimSpace(s.Find(".hidden-nested-link").AttrOr("href", ""))
job.Location = strings.TrimSpace(s.Find(".job-search-card__location").Text())
job.JobLink = strings.TrimSpace(s.Find("a.base-card__full-link").AttrOr("href", ""))
jobId, err := extractJobIDFromURL(job.JobLink)
if err != nil {
fmt.Printf("Error extracting job ID from URL %s: %v\n", job.JobLink, err)
}
jobIdInt, err := strconv.ParseInt(jobId, 10, 64)
if err != nil {
fmt.Printf("Error extracting job ID from URL %s: %v\n", job.JobLink, err)
}
job.ID = jobIdInt
if job.Title != "" && job.Company != "" && job.Location != "" && job.JobLink != "" {
jobs = append(jobs, job)
}
})
return jobs, nil
}
func (s *Scraper) ScrapeJobDescriptionWithContext(ctx context.Context, job models.Job) (string, map[string]string, error) {
var jobDescription string
url := s.buildJobDescriptionSearchURL(job.JobLink)
res, err := utils.RetryableHTTPRequest(ctx, url)
if err != nil {
fmt.Printf("Error fetching job description URL after retries: %v\n", err)
return "", map[string]string{}, err
}
defer res.Body.Close()
doc, err := goquery.NewDocumentFromReader(res.Body)
if err != nil {
return "", map[string]string{}, err
}
// Find the job details section directly by ID and extract its text content
jobDescription, jobCriteria, err := s.parseJobDescription(doc)
if err != nil {
return "", map[string]string{}, err
}
return strings.TrimSpace(jobDescription), jobCriteria, nil
}
func (s *Scraper) buildSearchURL(query models.SearchQuery, page int) string {
baseURL := "https://www.linkedin.com/jobs-guest/jobs/api/seeMoreJobPostings/search"
params := url.Values{}
// Required search parameters
params.Set("keywords", url.QueryEscape(query.Keywords))
params.Set("location", url.QueryEscape(query.Location))
// Time filter
// params.Set("f_TPR", s.config.Timespan)
// Work type filter
if query.FWT != "" {
params.Set("f_WT", query.FWT)
}
// Pagination
params.Set("start", strconv.Itoa(25*page))
return fmt.Sprintf("%s?%s", baseURL, params.Encode())
}
func (s *Scraper) buildJobDescriptionSearchURL(jobLink string) string {
// For job descriptions, we should use the direct job link
return strings.ReplaceAll(jobLink, "jp.linkedin.com", "linkedin.com")
}
func (s *Scraper) parseJobDescription(doc *goquery.Document) (string, map[string]string, error) {
var jobDescription string
jobCriteria := make(map[string]string)
// Find the main description section
descriptionSection := doc.Find("section.core-section-container.description .core-section-container__content")
if descriptionSection.Length() == 0 {
// Alternative selector if classes are different
descriptionSection = doc.Find("section.description .core-section-container__content")
}
// Parse the main job description from show-more-less-html section
descriptionHTML := descriptionSection.Find("section.show-more-less-html .show-more-less-html__markup")
if descriptionHTML.Length() > 0 {
jobDescription += parseHTMLContent(descriptionHTML)
}
// Parse job criteria list
criteriaList := descriptionSection.Find("ul.description__job-criteria-list")
if criteriaList.Length() > 0 {
criteriaList.Find("li.description__job-criteria-item").Each(func(i int, li *goquery.Selection) {
// Get the criteria header
header := strings.TrimSpace(li.Find("h3.description__job-criteria-subheader").Text())
// Get the criteria value
value := strings.TrimSpace(li.Find("span.description__job-criteria-text").Text())
if header != "" && value != "" {
jobCriteria[header] = value
}
})
}
// Clean up the description
jobDescription = strings.TrimSpace(jobDescription)
if jobDescription == "" {
return "", jobCriteria, fmt.Errorf("job description not found")
}
return jobDescription, jobCriteria, nil
}
// parseHTMLContent walks through HTML elements in order and preserves formatting
func parseHTMLContent(selection *goquery.Selection) string {
var result strings.Builder
// Walk through all child nodes in order
selection.Contents().Each(func(i int, s *goquery.Selection) {
if goquery.NodeName(s) == "#text" {
// Handle text nodes
text := strings.TrimSpace(s.Text())
if text != "" {
result.WriteString(text)
}
} else {
// Handle element nodes
tagName := goquery.NodeName(s)
text := strings.TrimSpace(s.Text())
if text == "" {
return
}
switch tagName {
case "p":
result.WriteString(text)
result.WriteString("\n\n")
case "h1", "h2", "h3", "h4", "h5", "h6":
result.WriteString(text)
result.WriteString("\n\n")
case "strong", "b":
result.WriteString("**")
result.WriteString(text)
result.WriteString("**")
case "em", "i":
result.WriteString("*")
result.WriteString(text)
result.WriteString("*")
case "li":
result.WriteString("• ")
result.WriteString(text)
result.WriteString("\n")
case "ul", "ol":
// Process list items recursively
s.Find("li").Each(func(j int, li *goquery.Selection) {
liText := strings.TrimSpace(li.Text())
if liText != "" {
result.WriteString("• ")
result.WriteString(liText)
result.WriteString("\n")
}
})
result.WriteString("\n")
case "br":
result.WriteString("\n")
case "div", "span":
// For div and span, recursively parse content
if s.Children().Length() > 0 {
result.WriteString(parseHTMLContent(s))
} else {
result.WriteString(text)
result.WriteString(" ")
}
default:
// For other tags, just extract text content
result.WriteString(text)
result.WriteString(" ")
}
}
})
return result.String()
}
func extractJobIDFromURL(jobURL string) (string, error) {
parsed, err := url.Parse(jobURL)
if err != nil {
return "", fmt.Errorf("invalid URL: %w", err)
}
// Get the last segment of the path
lastSegment := path.Base(parsed.Path)
// Extract job ID from the end of the segment using regex
// Look for a sequence of digits at the end of the string
re := regexp.MustCompile(`(\d+)$`)
matches := re.FindStringSubmatch(lastSegment)
if len(matches) < 2 {
return "", fmt.Errorf("job ID not found in URL path: %s", jobURL)
}
return matches[1], nil
}

70
internal/pipeline/test.go Normal file
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package pipeline
import (
"context"
"log"
"sync"
"github.com/jobs-scraper/internal/models"
)
func GetJobs(context context.Context, scraperService *Scraper) <-chan models.Job {
jobChan := make(chan models.Job, 100)
go func() {
defer close(jobChan)
if err := scraperService.ScrapeLinkedInJobsStreaming(context, 10, jobChan, models.SearchQuery{
Keywords: "Frontend Developer",
Location: "Japan",
FWT: "2,3",
}); err != nil {
log.Printf("Error scraping jobs: %v", err)
}
}()
return jobChan
}
func GetJobDescription(context context.Context, scraperService *Scraper, jobChan <-chan models.Job) <-chan models.JobWithDescription {
jobDescriptionChan := make(chan models.JobWithDescription, 100)
const numWorkers = 3
var wg sync.WaitGroup
// Start 3 worker goroutines
for range numWorkers {
wg.Add(1)
go func() {
defer wg.Done()
for job := range jobChan {
select {
case <-context.Done():
return
default:
}
// Scrape job description
if jd, jc, err := scraperService.ScrapeJobDescriptionWithContext(context, job); err != nil {
log.Printf("Error scraping jobs: %v", err)
} else {
jobDescriptionChan <- models.JobWithDescription{
Job: job,
JobDescription: models.JobDescription{
JobID: job.ID,
Description: jd,
Criteria: jc,
},
}
}
}
}()
}
// Close the output channel when all workers are done
go func() {
wg.Wait()
close(jobDescriptionChan)
}()
return jobDescriptionChan
}

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package repo
import (
"database/sql"
"encoding/json"
"fmt"
"strings"
"github.com/jobs-scraper/internal/models"
)
type JobDescriptionRepository struct {
db *sql.DB
}
type JobDescriptionData struct {
JobID int
Description string
Criteria map[string]string
}
func NewJobDescriptionRepository(db *sql.DB) *JobDescriptionRepository {
return &JobDescriptionRepository{db: db}
}
func (r *JobDescriptionRepository) SaveJobDescriptions(jobDescriptions []models.JobDescription) error {
if len(jobDescriptions) == 0 {
return nil
}
// Build the VALUES clause dynamically
valueStrings := make([]string, 0, len(jobDescriptions))
valueArgs := make([]interface{}, 0, len(jobDescriptions)*3)
for i, jd := range jobDescriptions {
// Convert criteria map to JSONB
criteriaByte, err := json.Marshal(jd.Criteria)
if err != nil {
return fmt.Errorf("error marshaling job criteria for job %d: %v", jd.JobID, err)
}
valueStrings = append(valueStrings, fmt.Sprintf("($%d, $%d, $%d)", i*3+1, i*3+2, i*3+3))
valueArgs = append(valueArgs, jd.JobID, jd.Description, criteriaByte)
}
sqlStatement := fmt.Sprintf(`
INSERT INTO job_descriptions (job_id, description, job_criteria)
VALUES %s
ON CONFLICT (job_id) DO UPDATE SET
description = EXCLUDED.description,
job_criteria = EXCLUDED.job_criteria,
updated_at = CURRENT_TIMESTAMP
`, strings.Join(valueStrings, ","))
_, err := r.db.Exec(sqlStatement, valueArgs...)
if err != nil {
return fmt.Errorf("error saving job descriptions: %v", err)
}
return nil
}
func (r *JobDescriptionRepository) GetJobDescriptionByJobID(jobID int64) (string, map[string]string, error) {
var (
description string
criteriaByte []byte
criteria map[string]string
)
sqlStatement := `SELECT description, job_criteria FROM job_descriptions WHERE job_id = $1`
err := r.db.QueryRow(sqlStatement, jobID).Scan(&description, &criteriaByte)
if err != nil {
if err == sql.ErrNoRows {
return "", nil, nil // No description found
}
return "", nil, fmt.Errorf("error fetching job description: %v", err)
}
// Unmarshal the JSON criteria
if criteriaByte != nil {
if err := json.Unmarshal(criteriaByte, &criteria); err != nil {
return "", nil, fmt.Errorf("error unmarshaling job criteria: %v", err)
}
}
return description, criteria, nil
}

119
internal/repo/job.go Normal file
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package repo
import (
"database/sql"
"fmt"
"github.com/jobs-scraper/internal/models"
)
type JobRepository struct {
db *sql.DB
}
func NewJobRepository(db *sql.DB) *JobRepository {
return &JobRepository{db: db}
}
func (r *JobRepository) SaveJobs(jobs []models.Job) error {
if len(jobs) == 0 {
return nil
}
// Deduplicate jobs by ID to avoid duplicate errors
jobMap := make(map[int64]models.Job)
for _, job := range jobs {
jobMap[job.ID] = job
}
uniqueJobs := make([]models.Job, 0, len(jobMap))
for _, job := range jobMap {
uniqueJobs = append(uniqueJobs, job)
}
sqlStatement := `
INSERT INTO jobs (id, title, company, company_link, location, job_link)
VALUES
`
// Create the value placeholders for all jobs
vals := []interface{}{}
for i, job := range uniqueJobs {
n := i * 6
if i > 0 {
sqlStatement += ","
}
sqlStatement += fmt.Sprintf("($%d, $%d, $%d, $%d, $%d, $%d)", n+1, n+2, n+3, n+4, n+5, n+6)
vals = append(vals, job.ID, job.Title, job.Company, job.CompanyLink, job.Location, job.JobLink)
}
sqlStatement += `
ON CONFLICT (id) DO UPDATE SET
title = EXCLUDED.title,
company = EXCLUDED.company,
company_link = EXCLUDED.company_link,
location = EXCLUDED.location,
job_link = EXCLUDED.job_link
`
_, err := r.db.Exec(sqlStatement, vals...)
if err != nil {
return fmt.Errorf("error inserting jobs: %v", err)
}
return nil
}
func (r *JobRepository) GetAllJobs() ([]models.Job, error) {
rows, err := r.db.Query("SELECT id, title, company, company_link, location, job_link FROM jobs")
if err != nil {
return nil, fmt.Errorf("error querying jobs: %v", err)
}
defer rows.Close()
var jobs []models.Job
for rows.Next() {
var job models.Job
if err := rows.Scan(&job.ID, &job.Title, &job.Company, &job.CompanyLink, &job.Location, &job.JobLink); err != nil {
return nil, fmt.Errorf("error scanning job row: %v", err)
}
jobs = append(jobs, job)
}
if err := rows.Err(); err != nil {
return nil, fmt.Errorf("error iterating over job rows: %v", err)
}
return jobs, nil
}
func (r *JobRepository) GetJobByID(id int) (*models.Job, error) {
var job models.Job
sqlStatement := `
SELECT id, title, company, company_link, location, job_link
FROM jobs
WHERE id = $1
`
err := r.db.QueryRow(sqlStatement, id).Scan(
&job.ID,
&job.Title,
&job.Company,
&job.CompanyLink,
&job.Location,
&job.JobLink,
)
if err == sql.ErrNoRows {
return nil, fmt.Errorf("job with ID %d not found", id)
}
if err != nil {
return nil, fmt.Errorf("error querying job: %v", err)
}
return &job, nil
}

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package services
import (
"encoding/json"
"fmt"
"log"
"github.com/eduardolat/openroutergo"
"github.com/jobs-scraper/internal/models"
)
// JobAnalysisResult represents the structured response from job analysis
type JobAnalysisResult struct {
Recommendation string `json:"recommendation"`
ConfidenceScore int `json:"confidence_score"`
MatchingSkills []string `json:"matching_skills"`
MissingSkills []string `json:"missing_skills"`
ExperienceMatch string `json:"experience_match"`
Summary string `json:"summary"`
ImprovementSuggestions []string `json:"improvement_suggestions"`
}
// ShouldApply returns true if the recommendation is to apply for the job
func (r *JobAnalysisResult) ShouldApply() bool {
return r.Recommendation == "apply"
}
// IsHighConfidence returns true if the confidence score is 70 or above
func (r *JobAnalysisResult) IsHighConfidence() bool {
return r.ConfidenceScore >= 70
}
type OpenRouterService struct {
model string
apiKey string
}
func NewOpenRouterService(model string, apiKey string) OpenRouterService {
return OpenRouterService{
model: model,
apiKey: apiKey,
}
}
func (s *OpenRouterService) AnalyzeJobDescription(cv string, jobDesc models.JobDescription) (*JobAnalysisResult, error) {
client, err := openroutergo.
NewClient().
WithAPIKey(s.apiKey).
Create()
if err != nil {
log.Fatalf("Failed to create client: %v", err)
}
// Build the user message with all the provided data
userMessage := fmt.Sprintf(`Analyze the following CV against the job description and criteria, then provide a recommendation following the schema below.
1) If there are missing skills, try to guess if they still match based on similar skills or experience in the cv.
for example: Javascript is mentioned in the cv, but the job requires Vanilla js, since they are the same thing, it should be included in the matching skills.
2) The job shouldn't require any language skills, preferbly only english.
3) The job should be remote, or provide relocation to the country.
CV:
%s
Job Description:
%s
Job Criteria (key-value):
%v
OUTPUT REQUIREMENTS:
- Return ONLY a single valid JSON object, no markdown, no backticks, no superflous characters so i can parse it.
- Do NOT include any markdown, code fences, backticks, or any additional text.
- Use this exact schema and key names:
{
"recommendation": "apply" | "do_not_apply",
"confidence_score": number, // integer 0-100
"matching_skills": [string],
"missing_skills": [string],
"experience_match": "excellent" | "good" | "fair" | "poor",
"summary": string,
"improvement_suggestions": [string]
}`, cv, jobDesc.Description, jobDesc.Criteria)
// Build and execute your request with a fluent API
_, resp, err := client.
NewChatCompletion().
WithModel(s.model).
WithSystemMessage("You are an expert HR assistant specializing in job application analysis. You help candidates determine if they should apply for specific positions based on their CV and the job requirements. Always respond in valid JSON format.").
WithUserMessage(userMessage).
Execute()
if err != nil {
return nil, fmt.Errorf("failed to execute completion: %v", err)
}
if len(resp.Choices) == 0 {
return nil, fmt.Errorf("no response choices received from API")
}
// Extract JSON from the response (handle markdown code blocks)
jsonContent := resp.Choices[0].Message.Content
// Parse the JSON response into our struct
var result JobAnalysisResult
if err := json.Unmarshal([]byte(jsonContent), &result); err != nil {
return nil, fmt.Errorf("failed to parse JSON response: %v", err)
}
return &result, nil
}
// func (s *OpenRouterService) CreateCV(cv string, jobDesc models.JobDescription) (*JobAnalysisResult, error) {
// }

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package utils
import (
"context"
"fmt"
"math"
"net/http"
"time"
)
type RetryConfig struct {
MaxRetries int
BaseDelay time.Duration
MaxDelay time.Duration
}
func RetryableHTTPRequest(ctx context.Context, url string) (*http.Response, error) {
client := &http.Client{
Timeout: 30 * time.Second,
}
var lastErr error
for attempt := 0; attempt <= 3; attempt++ {
// Create request with context
req, err := http.NewRequestWithContext(ctx, "GET", url, nil)
if err != nil {
return nil, fmt.Errorf("failed to create request: %w", err)
}
req.Header.Set("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36")
resp, err := client.Do(req)
if err != nil {
lastErr = err
fmt.Printf("Request attempt %d failed: %v\n", attempt+1, err)
} else if resp.StatusCode >= http.StatusOK && resp.StatusCode < http.StatusMultipleChoices {
// Success
return resp, nil
} else if resp.StatusCode == http.StatusTooManyRequests {
// 429 Too Many Requests - retry with backoff
resp.Body.Close()
lastErr = fmt.Errorf("rate limited: %d %s", resp.StatusCode, resp.Status)
fmt.Printf("Request attempt %d failed with status %d (rate limited)\n", attempt+1, resp.StatusCode)
} else {
// All other errors (4xx, 5xx) - don't retry
resp.Body.Close()
return nil, fmt.Errorf("request failed %d: %s", resp.StatusCode, resp.Status)
}
// max attempts for now = 3
if attempt < 3 {
delay := min(time.Duration(math.Pow(2, float64(attempt)))*1*time.Second, 30*time.Second)
fmt.Printf("Retrying in %v... (attempt %d/%d)\n", delay, attempt+1, 3)
select {
case <-ctx.Done():
return nil, ctx.Err()
case <-time.After(delay):
// Continue to next attempt
}
}
}
return nil, fmt.Errorf("all retry attempts failed, last error: %w", lastErr)
}

View file

@ -0,0 +1 @@
DROP TABLE IF EXISTS jobs;

View file

@ -0,0 +1,9 @@
CREATE TABLE IF NOT EXISTS jobs (
id BIGSERIAL PRIMARY KEY,
title VARCHAR(255) NOT NULL,
company VARCHAR(255) NOT NULL,
company_link TEXT,
location VARCHAR(255),
job_link TEXT UNIQUE,
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

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@ -0,0 +1,12 @@
-- Drop the trigger first
DROP TRIGGER IF EXISTS trigger_update_job_descriptions_timestamp ON job_descriptions;
-- Drop the trigger function
DROP FUNCTION IF EXISTS update_job_descriptions_updated_at();
-- Drop the indexes
DROP INDEX IF EXISTS idx_job_descriptions_criteria;
DROP INDEX IF EXISTS idx_job_descriptions_job_id;
-- Drop the table (this will automatically drop any remaining dependencies)
DROP TABLE IF EXISTS job_descriptions;

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CREATE TABLE IF NOT EXISTS job_descriptions (
id SERIAL PRIMARY KEY,
job_id BIGINT NOT NULL,
description TEXT NOT NULL,
job_criteria JSONB DEFAULT '{}'::jsonb,
created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
updated_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
FOREIGN KEY (job_id) REFERENCES jobs(id) ON DELETE CASCADE
);
-- Create an index on job_id for faster lookups
CREATE INDEX idx_job_descriptions_job_id ON job_descriptions(job_id);
-- Create a GIN index on the job_criteria JSONB field for faster searching within the JSON data
CREATE INDEX idx_job_descriptions_criteria ON job_descriptions USING GIN (job_criteria);
-- Add trigger to update updated_at timestamp
CREATE OR REPLACE FUNCTION update_job_descriptions_updated_at()
RETURNS TRIGGER AS $$
BEGIN
NEW.updated_at = CURRENT_TIMESTAMP;
RETURN NEW;
END;
$$ language 'plpgsql';
CREATE TRIGGER trigger_update_job_descriptions_timestamp
BEFORE UPDATE ON job_descriptions
FOR EACH ROW
EXECUTE FUNCTION update_job_descriptions_updated_at();

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-- Remove unique constraint from job_id column in job_descriptions table
ALTER TABLE job_descriptions DROP CONSTRAINT IF EXISTS unique_job_id;

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-- Add unique constraint to job_id column in job_descriptions table
ALTER TABLE job_descriptions ADD CONSTRAINT unique_job_id UNIQUE (job_id);

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ALTER TABLE jobs DROP CONSTRAINT unique_job_link;

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ALTER TABLE jobs ADD CONSTRAINT unique_job_link UNIQUE (job_link);

66
scraper/main.go Normal file
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package main
import (
"context"
"log"
"time"
"github.com/jobs-scraper/infrastructure"
"github.com/jobs-scraper/internal/models"
"github.com/jobs-scraper/internal/pipeline"
"github.com/jobs-scraper/internal/repo"
"github.com/joho/godotenv"
)
func main() {
if err := godotenv.Load(); err != nil {
log.Println("No .env file found, using system environment variables")
}
dbConfig := infrastructure.LoadConfigFromEnv()
db, err := infrastructure.NewConnection(dbConfig)
if err != nil {
log.Fatal("Error connecting to db")
}
err = db.Ping()
if err != nil {
log.Fatal("Error pinging db")
}
log.Println("Successfully connected to db")
// Run database migrations
if err := infrastructure.RunMigrations(db); err != nil {
log.Fatalf("Failed to run migrations: %v", err)
}
scraper := pipeline.NewScraper(pipeline.Config{
Distance: "25",
SortBy: "R",
MaxRetries: 3,
BaseDelay: 1 * time.Second,
MaxDelay: 30 * time.Second,
RequestTimeout: 30 * time.Second,
})
jobRepo := repo.NewJobRepository(db)
jobDescriptionRepo := repo.NewJobDescriptionRepository(db)
jobPipeline := pipeline.NewJobPipeline(scraper, 5, 1*time.Second) // 5 workers, 1 second rate limit
ctx := context.Background()
searchParams := models.SearchQuery{
Keywords: "Frontend Developer",
Location: "Japan",
FWT: "2,3",
}
err = jobPipeline.ProcessJobsStreaming(ctx, 10, jobRepo, jobDescriptionRepo, searchParams)
if err != nil {
log.Fatalf("Pipeline processing failed: %v", err)
}
log.Println("Jobs inserted successfully")
}