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|
{ lib, pkgs, ... }:
{
name = "prometheus-ui";
nodes = {
browser =
{ config, pkgs, ... }:
{
virtualisation.memorySize = 1024 * 2;
environment.systemPackages =
let
prometheusSeleniumScript =
pkgs.writers.writePython3Bin "prometheus-selenium-script"
{
libraries = with pkgs.python3Packages; [ selenium ];
}
''
from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.firefox.options import Options
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.support.ui import WebDriverWait
options = Options()
options.add_argument("--headless")
service = webdriver.FirefoxService(
executable_path="${lib.getExe pkgs.geckodriver}") # noqa: E501
driver = webdriver.Firefox(options=options, service=service)
driver.implicitly_wait(10)
driver.get("http://prometheus:9090/")
wait = WebDriverWait(driver, 60)
# There should have been a redirect
wait.until(EC.url_to_be("http://prometheus:9090/query"))
wait.until(EC.presence_of_element_located(
(By.CLASS_NAME, "mantine-AppShell-header")))
wait.until(EC.presence_of_element_located(
(By.CLASS_NAME, "mantine-AppShell-main")))
# Do a Prometheus query
query_box = driver.find_element(
By.XPATH, "//div[@role='textbox']")
query_box.click()
query_box.send_keys("up")
# Run query with execute button
driver.find_element(
By.XPATH, "//span[contains(text(),'Execute')]").click()
# Wait for query result table
wait.until(EC.presence_of_element_located(
(By.CLASS_NAME, "mantine-Table-tr")))
# Navigate to target health page
driver.find_element(
By.XPATH, "//span[text()='Status']").click()
driver.find_element(
By.LINK_TEXT, "Target health").click()
wait.until(EC.url_to_be("http://prometheus:9090/targets"))
# Click on the prometheus job dropdown button
driver.find_element(
By.CLASS_NAME, "mantine-Accordion-chevron").click()
wait.until(EC.presence_of_element_located(
(By.CSS_SELECTOR, "div[class^='_healthOk']")))
targets_errored = len(driver.find_elements(
By.CSS_SELECTOR, "div[class^='_healthErr']"))
assert targets_errored == 0
# Go back to homepage
driver.find_element(
By.XPATH, "//span[text()='Query']").click()
# Navigate to build info section and verify correct version
# number shown
driver.find_element(
By.XPATH, "//span[text()='Status']").click()
driver.find_element(
By.LINK_TEXT, "Runtime & build information").click()
wait.until(EC.url_to_be("http://prometheus:9090/status"))
# Find table and verify version
wait.until(EC.text_to_be_present_in_element(
(By.XPATH,
"//tr[th[text()='version']]/td"),
"${pkgs.prometheus.version}"))
driver.close()
'';
in
with pkgs;
[
curl
firefox-unwrapped
geckodriver
prometheusSeleniumScript
];
};
prometheus =
{ config, pkgs, ... }:
{
networking.firewall.allowedTCPPorts = [ config.services.prometheus.port ];
services.prometheus = {
enable = true;
globalConfig.scrape_interval = "2s";
scrapeConfigs = [
{
job_name = "prometheus";
static_configs = [
{
targets = [
"prometheus:${toString config.services.prometheus.port}"
];
}
];
}
];
};
};
};
testScript = ''
prometheus.wait_for_unit("prometheus")
prometheus.wait_for_open_port(9090)
prometheus.wait_until_succeeds("curl -sSf http://localhost:9090/-/healthy")
browser.systemctl("start network-online.target")
browser.wait_for_unit("network-online.target")
browser.succeed("curl -kLs http://prometheus:9090/query | grep 'Prometheus Time Series Collection and Processing Server'")
# Ensure the application is actually rendered by the Javascript
browser.succeed("PYTHONUNBUFFERED=1 prometheus-selenium-script")
'';
}
|
