283 lines
13 KiB
Python
283 lines
13 KiB
Python
import os
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import json
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import time
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import logging
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import pandas as pd
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from selenium import webdriver
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from selenium.webdriver.common.by import By
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from selenium.webdriver.chrome.options import Options as ChromeOptions
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from selenium.webdriver.support.ui import WebDriverWait
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from selenium.webdriver.support import expected_conditions as EC
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from selenium.common.exceptions import TimeoutException, NoSuchElementException
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# --- Konfiguration ---
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class Config:
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LOGIN_URL = "https://app.dealfront.com/login"
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TARGET_URL = "https://app.dealfront.com/t/prospector/companies"
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SEARCH_NAME = "Facility Management" # <-- PASSEN SIE DIES AN IHRE GESPEICHERTE SUCHE AN
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CREDENTIALS_FILE = "/app/dealfront_credentials.json"
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OUTPUT_DIR = "/app/output"
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# --- Logging Setup ---
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LOG_FORMAT = '%(asctime)s - %(levelname)-8s - %(name)-25s - %(message)s'
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logging.basicConfig(level=logging.INFO, format=LOG_FORMAT, force=True)
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logging.getLogger("selenium.webdriver.remote").setLevel(logging.WARNING)
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logger = logging.getLogger(__name__)
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os.makedirs(Config.OUTPUT_DIR, exist_ok=True)
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log_filepath = os.path.join(Config.OUTPUT_DIR, f"dealfront_run_{time.strftime('%Y%m%d-%H%M%S')}.log")
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file_handler = logging.FileHandler(log_filepath, mode='w', encoding='utf-8')
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file_handler.setFormatter(logging.Formatter(LOG_FORMAT))
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logging.getLogger().addHandler(file_handler)
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class DealfrontScraper:
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def __init__(self):
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logger.info("Initialisiere WebDriver...")
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chrome_options = ChromeOptions()
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chrome_options.add_experimental_option("prefs", {"profile.managed_default_content_settings.images": 2})
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chrome_options.add_argument("--headless=new")
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chrome_options.add_argument("--no-sandbox")
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chrome_options.add_argument("--disable-dev-shm-usage")
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chrome_options.add_argument("--window-size=1920,1200")
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try:
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self.driver = webdriver.Chrome(options=chrome_options)
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except Exception as e:
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logger.critical("WebDriver konnte nicht initialisiert werden.", exc_info=True)
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raise
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self.wait = WebDriverWait(self.driver, 30)
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self.username, self.password = self._load_credentials()
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if not self.username or not self.password:
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raise ValueError("Credentials konnten nicht geladen werden. Breche ab.")
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logger.info("WebDriver erfolgreich initialisiert.")
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def _load_credentials(self):
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try:
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with open(Config.CREDENTIALS_FILE, 'r', encoding='utf-8') as f:
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creds = json.load(f)
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return creds.get("username"), creds.get("password")
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except Exception as e:
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logger.error(f"Credentials-Datei {Config.CREDENTIALS_FILE} konnte nicht geladen werden: {e}")
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return None, None
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def _save_debug_artifacts(self, suffix=""):
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try:
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timestamp = time.strftime("%Y%m%d-%H%M%S")
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filename_base = os.path.join(Config.OUTPUT_DIR, f"error_{suffix}_{timestamp}")
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self.driver.save_screenshot(f"{filename_base}.png")
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with open(f"{filename_base}.html", "w", encoding="utf-8") as f:
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f.write(self.driver.page_source)
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logger.error(f"Debug-Artefakte gespeichert: {filename_base}.*")
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except Exception as e:
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logger.error(f"Konnte Debug-Artefakte nicht speichern: {e}")
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def login(self):
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try:
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logger.info(f"Navigiere zur Login-Seite: {Config.LOGIN_URL}")
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self.driver.get(Config.LOGIN_URL)
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self.wait.until(EC.visibility_of_element_located((By.NAME, "email"))).send_keys(self.username)
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self.driver.find_element(By.CSS_SELECTOR, "input[type='password']").send_keys(self.password)
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self.driver.find_element(By.XPATH, "//button[normalize-space()='Log in']").click()
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logger.info("Login-Befehl gesendet. Warte 5 Sekunden auf Session-Etablierung.")
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time.sleep(5)
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# Verifizierung, dass wir nicht mehr auf der Login-Seite sind
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if "login" not in self.driver.current_url:
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logger.info("Login erfolgreich, URL hat sich geändert.")
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return True
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self._save_debug_artifacts("login_stuck")
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return False
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except Exception as e:
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logger.critical("Login-Prozess fehlgeschlagen.", exc_info=True)
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self._save_debug_artifacts("login_exception")
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return False
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def scroll_table_slowly(self, steps=10, pause=0.3):
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"""
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Scrollt die Tabelle in mehreren Schritten langsam nach unten,
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damit bei Virtualisierung/Lazy Rendering alle Zeilen geladen werden.
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"""
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try:
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table = self.driver.find_element(By.CSS_SELECTOR, "table#t-result-table")
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table_height = table.size['height']
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for i in range(steps):
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y = int(table_height * (i + 1) / steps)
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self.driver.execute_script("arguments[0].scrollTop = arguments[1];", table, y)
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time.sleep(pause)
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logger.info("Tabelle langsam nach unten gescrollt.")
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except Exception as e:
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logger.warning(f"Fehler beim langsamen Scrollen: {e}")
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def wait_for_table_content_change(self, previous_first_cell_text, timeout=20):
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"""
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Wartet, bis sich der Text der ersten Zelle der Tabelle geändert hat.
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"""
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start_time = time.time()
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while time.time() - start_time < timeout:
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try:
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first_cell = self.driver.find_element(By.CSS_SELECTOR, "table#t-result-table tbody tr:first-child td")
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current_text = first_cell.text.strip()
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if current_text and current_text != previous_first_cell_text:
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logger.info(f"Text der ersten Zelle hat sich geändert: '{previous_first_cell_text}' -> '{current_text}'")
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return True
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except Exception:
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pass
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time.sleep(0.5)
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logger.warning("Timeout beim Warten auf Änderung des Inhalts der ersten Tabellenzelle.")
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return False
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def navigate_and_load_search(self, search_name):
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try:
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logger.info(f"Navigiere direkt zur Target-Seite und lade die Suche...")
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self.driver.get(Config.TARGET_URL)
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self.wait.until(EC.url_contains("/t/prospector/"))
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search_item_selector = (By.XPATH, f"//div[contains(@class, 'truncate') and normalize-space()='{search_name}']")
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self.wait.until(EC.element_to_be_clickable(search_item_selector)).click()
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logger.info("Suche geladen. Warte auf das Rendern der Ergebnistabelle.")
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self.wait.until(EC.visibility_of_element_located((By.CSS_SELECTOR, "table#t-result-table tbody tr")))
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return True
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except Exception as e:
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logger.critical("Navigation oder Laden der Suche fehlgeschlagen.", exc_info=True)
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self._save_debug_artifacts("navigation_or_search_load")
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return False
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def extract_current_page_results(self):
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results = []
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rows_selector = (By.XPATH, "//table[@id='t-result-table']/tbody/tr[.//a[contains(@class, 't-highlight-text')]]")
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try:
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data_rows = self.driver.find_elements(*rows_selector)
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for row in data_rows:
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try:
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name = row.find_element(By.CSS_SELECTOR, ".sticky-column a.t-highlight-text").get_attribute("title").strip()
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website = "N/A"
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try:
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website = row.find_element(By.CSS_SELECTOR, "a.text-gray-400.t-highlight-text").text.strip()
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except NoSuchElementException:
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pass
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results.append({'name': name, 'website': website})
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except NoSuchElementException:
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continue
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except Exception as e:
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logger.error(f"Fehler bei der Extraktion auf der aktuellen Seite: {e}")
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return results
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def scrape_all_pages(self, max_pages=10):
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all_companies = []
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previous_first_cell_text = ""
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for page_number in range(1, max_pages + 1):
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logger.info(f"--- Verarbeite Seite {page_number} ---")
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try:
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self.wait.until(EC.visibility_of_element_located((By.CSS_SELECTOR, "table#t-result-table")))
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except TimeoutException:
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logger.error("Ergebnistabelle wurde nicht geladen. Breche ab.")
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break
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logger.info("Warte 5 Sekunden, um sicherzugehen, dass alle Daten geladen sind...")
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time.sleep(5)
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# Vor Pagination: Text der ersten Zelle merken
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try:
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first_cell = self.driver.find_element(By.CSS_SELECTOR, "table#t-result-table tbody tr:first-child td")
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previous_first_cell_text = first_cell.text.strip()
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logger.info(f"Text der ersten Zelle vor Pagination: '{previous_first_cell_text}'")
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except Exception:
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previous_first_cell_text = ""
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logger.warning("Konnte Text der ersten Zelle vor Pagination nicht ermitteln.")
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self.scroll_table_slowly()
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logger.info("Warte nach Scrollen nochmals 3 Sekunden...")
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time.sleep(3)
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# Jetzt erst Daten extrahieren
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page_results = self.extract_current_page_results()
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logger.info(f"Seite {page_number}: {len(page_results)} Firmen gefunden. Gesamt bisher: {len(all_companies) + len(page_results)}")
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all_companies.extend(page_results)
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# Pagination-Buttons loggen und Weiter-Button suchen
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try:
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pagination_nav = self.driver.find_element(By.CSS_SELECTOR, "nav.eb-pagination")
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buttons = pagination_nav.find_elements(By.CSS_SELECTOR, "a.eb-pagination-button")
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logger.info(f"Gefundene Paginierungs-Buttons auf Seite {page_number}: {len(buttons)}")
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for idx, btn in enumerate(buttons):
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btn_text = btn.text.strip()
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btn_classes = btn.get_attribute('class')
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btn_html = btn.get_attribute('outerHTML')
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has_svg = "svg" in btn_html
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logger.info(f"Button {idx}: Text='{btn_text}', Klassen='{btn_classes}', SVG={has_svg}, HTML-Start={btn_html[:120]}...")
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except NoSuchElementException:
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logger.warning("Keine Pagination-Buttons gefunden.")
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buttons = []
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next_button = None
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for idx, btn in enumerate(buttons):
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btn_html = btn.get_attribute('outerHTML')
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btn_text = btn.text.strip()
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btn_classes = btn.get_attribute('class')
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has_svg = "svg" in btn_html
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is_disabled = "disabled" in btn_classes
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if has_svg and not is_disabled and btn_text == "":
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next_button = btn
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logger.info(f"Als Weiter-Button erkannt: Button {idx}")
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break
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if not next_button:
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logger.info("Kein klickbarer 'Weiter'-Button mehr gefunden. Paginierung abgeschlossen.")
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break
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logger.info("Klicke auf 'Weiter'-Button...")
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try:
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self.driver.execute_script("arguments[0].scrollIntoView({block: 'center'});", next_button)
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time.sleep(0.5)
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self.driver.execute_script("arguments[0].click();", next_button)
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logger.info("Klick auf Weiter-Button ausgeführt.")
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# Warte auf Änderung des Inhalts der ersten Tabellenzelle
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self.wait_for_table_content_change(previous_first_cell_text, timeout=30)
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except Exception as e:
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logger.error(f"Fehler beim Klicken auf den Weiter-Button oder beim Warten auf neue Seite: {e}")
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try:
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timestamp = time.strftime("%Y%m%d-%H%M%S")
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self.driver.save_screenshot(f"/app/output/pagination_error_{timestamp}.png")
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with open(f"/app/output/pagination_error_{timestamp}.html", "w", encoding="utf-8") as f:
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f.write(self.driver.page_source)
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logger.info(f"Screenshot und HTML der Seite nach Pagination-Fehler gespeichert.")
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except Exception as ee:
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logger.error(f"Fehler beim Speichern von Screenshot/HTML: {ee}")
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break
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return all_companies
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def close(self):
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if self.driver:
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self.driver.quit()
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if __name__ == "__main__":
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scraper = None
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try:
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scraper = DealfrontScraper()
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if not scraper.login(): raise Exception("Login fehlgeschlagen")
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if not scraper.navigate_and_load_search(Config.SEARCH_NAME): raise Exception("Navigation/Suche fehlgeschlagen")
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all_companies = scraper.scrape_all_pages(max_pages=6) # Limitiere auf 6 Seiten
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if all_companies:
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df = pd.DataFrame(all_companies)
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output_csv_path = os.path.join(Config.OUTPUT_DIR, f"dealfront_results_{time.strftime('%Y%m%d-%H%M%S')}.csv")
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df.to_csv(output_csv_path, index=False, sep=';', encoding='utf-8-sig')
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logger.info(f"Ergebnisse ({len(df)} Firmen) erfolgreich in '{output_csv_path}' gespeichert.")
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else:
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logger.warning("Keine Firmen konnten extrahiert werden.")
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except Exception as e:
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logger.critical(f"Ein kritischer Fehler ist im Hauptprozess aufgetreten: {e}", exc_info=True)
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finally:
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if scraper:
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scraper.close()
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logger.info("Dealfront Automatisierung beendet.") |