Added instance deploy metrics and horizon selenium metrics

lib/horizon.py

@@ -0,0 +1,76 @@
+from selenium import webdriver
+from selenium.webdriver.support import expected_conditions as EC
+from selenium.webdriver.common.by import By
+from selenium.webdriver.support.ui import WebDriverWait
+from selenium.common.exceptions import TimeoutException
+import os
+import time
+import openstack
+import datetime
+import prometheus_client as prom
+
+openstack_username = os.getenv('OS_USERNAME')
+openstack_password = os.getenv('OS_PASSWORD')
+api_metrics = prom.Gauge('openstack_horizon_response_seconds', 'Time for horizon login via Chrome.', ['cloud_name'])
+api_status = prom.Gauge('openstack_horizon_status', 'Horizon current status. 1 = up 0 = down.',['cloud_name'])
+
+def get_metrics(horizon_url,cloud_name):
+    chrome_options = webdriver.ChromeOptions()
+    chrome_options.binary_location = "/usr/bin/chromium"
+    chrome_options.add_argument('--ignore-certificate-errors')
+    chrome_options.add_argument('--disable-popup-blocking')
+    chrome_options.add_argument('--disable-translate')
+    chrome_options.add_argument('--disable-notifications')
+    chrome_options.add_argument('--disable-gpu')
+    chrome_options.add_argument('--no-sandbox')
+    chrome_options.add_argument('--disable-dev-shm-usage')
+
+    driver=webdriver.Chrome(chrome_options=chrome_options)
+    driver.implicitly_wait(10)
+    
+    # driver.get("https://httpstat.us/200")
+
+    # if "200 OK" in driver.page_source:
+    #     print('Selenium successfully opened with Chrome (under the Xvfb display) and navigated to "https://httpstat.us/200", you\'re all set!')
+
+    print(f"Attempting to log into Horizon at {horizon_url}")
+    timeout = 30
+    driver.get(horizon_url)
+    try:
+        # wait till page loads
+        WebDriverWait(driver, timeout).until(EC.title_contains("OpenStack"))
+    except TimeoutException:
+        print("Timed out waiting for root url to load")
+        api_status.labels(cloud_name).set(0)
+        return None
+
+    #Print Page
+    # the following javascript scrolls down the entire page body.  Since Twitter
+    # uses "inifinite scrolling", more content will be added to the bottom of the
+    # DOM as you scroll... since it is in the loop, it will scroll down up to 100
+    # times.
+    for _ in range(100):
+        driver.execute_script("window.scrollTo(0, document.body.scrollHeight);")
+    # print all of the page source that was loaded
+    # print(driver.page_source.encode("utf-8"))
+
+    # Log in
+    driver.find_element_by_id("id_username").send_keys(f"{openstack_username}")
+    driver.find_element_by_id ("id_password").send_keys(f"{openstack_password}")
+    start_time = datetime.datetime.now()
+    driver.find_element_by_id("loginBtn").click()
+
+    try:
+        WebDriverWait(driver, timeout).until(EC.title_contains("OpenStack"))
+        end_time = datetime.datetime.now()
+        time_took = end_time - start_time
+        seconds_took = time_took.seconds
+        print(f"Horizon took {seconds_took} seconds to log in.")
+        api_metrics.labels(cloud_name).set(seconds_took)
+        api_status.labels(cloud_name).set(1)
+    except:
+        print("Timed out waiting for login to load")
+        api_status.labels(cloud_name).set(1)
+
+    finally:
+        driver.quit()