Class: SourceMonitor::Scraping::ItemScraper::Persistence

Inherits:
Object
  • Object
show all
Defined in:
lib/source_monitor/scraping/item_scraper/persistence.rb

Overview

Persists scrape outcomes to the database and builds a Result object.

Instance Method Summary collapse

Constructor Details

#initialize(item:, source:, adapter_name:) ⇒ Persistence

Returns a new instance of Persistence.



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# File 'lib/source_monitor/scraping/item_scraper/persistence.rb', line 12

def initialize(item:, source:, adapter_name:)
  @item = item
  @source = source
  @adapter_name = adapter_name
end

Instance Method Details

#persist_failure(error:, started_at:, message_override: nil) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/source_monitor/scraping/item_scraper/persistence.rb', line 51

def persist_failure(error:, started_at:, message_override: nil)
  raise ArgumentError, "Item does not belong to a source" unless source

  completed_at = Time.current
  message = message_override.presence || error.message.presence || "Scrape failed"
  http_status = extract_http_status(error)
  metadata = failure_metadata(error)

  log = nil
  item.class.transaction do
    item.update!(scrape_status: "failed", scraped_at: completed_at)
    log = build_log(
      started_at:,
      completed_at: completed_at,
      duration_ms: duration_ms(started_at:, completed_at:),
      success: false,
      http_status: http_status,
      content_length: nil,
      metadata: metadata,
      error_class: error.class.name,
      error_message: message
    )
  end

  SourceMonitor::Scraping::ItemScraper::Result.new(
    status: :failed,
    item: item,
    log: log,
    message: "Scrape failed: #{message}",
    error: error
  )
end

#persist_success(adapter_result:, started_at:) ⇒ Object 



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# File 'lib/source_monitor/scraping/item_scraper/persistence.rb', line 18

def persist_success(adapter_result:, started_at:)
  completed_at = Time.current
  success = adapter_result.status.to_s != "failed"
  status = normalize_status(adapter_result.status, success)
  metadata = normalize_metadata(adapter_result.metadata)
  http_status = metadata&.[](:http_status)
  error_info = success ? {} : extract_error_info(metadata)
  content_length = adapter_result.html.to_s.presence && adapter_result.html.to_s.bytesize

  log = nil
  item.class.transaction do
    apply_item_success(status:, success:, completed_at:, adapter_result:)
    log = build_log(
      started_at:,
      completed_at:,
      duration_ms: duration_ms(started_at:, completed_at:),
      success: success,
      http_status: http_status,
      content_length: content_length,
      metadata: metadata,
      error_class: error_info[:class],
      error_message: error_info[:message]
    )
  end

  SourceMonitor::Scraping::ItemScraper::Result.new(
    status: status,
    item: item,
    log: log,
    message: message_for(status, success, error_info[:message], metadata)
  )
end