text: #!/usr/bin/env python3
  
  import time
  import logging
  import os
  import sys
  
  import boto3
  from github import Github
  import requests
  
  from env_helper import REPO_COPY, TEMP_PATH
  from stopwatch import Stopwatch
  from upload_result_helper import upload_results
  from s3_helper import S3Helper
  from get_robot_token import get_best_robot_token, get_parameter_from_ssm
  from pr_info import PRInfo
  from compress_files import compress_fast
  from commit_status_helper import post_commit_status
  from clickhouse_helper import ClickHouseHelper, prepare_tests_results_for_clickhouse
  from version_helper import get_version_from_repo
  from tee_popen import TeePopen
  from ssh import SSHKey
  from build_download_helper import get_build_name_for_check
  from rerun_helper import RerunHelper
  
  JEPSEN_GROUP_NAME = 'jepsen_group'
  DESIRED_INSTANCE_COUNT = 3
  IMAGE_NAME = 'clickhouse/keeper-jepsen-test'
  CHECK_NAME = 'ClickHouse Keeper Jepsen (actions)'
  
  
  SUCCESSFUL_TESTS_ANCHOR = "# Successful tests"
  INTERMINATE_TESTS_ANCHOR = "# Indeterminate tests"
  CRASHED_TESTS_ANCHOR = "# Crashed tests"
  FAILED_TESTS_ANCHOR = "# Failed tests"
  
  def _parse_jepsen_output(path):
      test_results = []
      current_type = ''
      with open(path, 'r') as f:
          for line in f:
              if SUCCESSFUL_TESTS_ANCHOR in line:
                  current_type = 'OK'
              elif INTERMINATE_TESTS_ANCHOR in line or CRASHED_TESTS_ANCHOR in line:
                  current_type = 'ERROR'
              elif FAILED_TESTS_ANCHOR in line:
                  current_type = 'FAIL'
  
              if (line.startswith('store/clickhouse-keeper') or line.startswith('clickhouse-keeper')) and current_type:
                  test_results.append((line.strip(), current_type))
  
      return test_results
  
  def get_autoscaling_group_instances_ids(asg_client, group_name):
      group_description = asg_client.describe_auto_scaling_groups(AutoScalingGroupNames=[group_name])
      our_group = group_description['AutoScalingGroups'][0]
      instance_ids = []
      for instance in our_group['Instances']:
          if instance['LifecycleState'] == 'InService' and instance['HealthStatus'] == 'Healthy':
              instance_ids.append(instance['InstanceId'])
  
      return instance_ids
  
  def get_instances_addresses(ec2_client, instance_ids):
      ec2_response = ec2_client.describe_instances(InstanceIds = instance_ids)
      instance_ips = []
      for instances in ec2_response['Reservations']:
          for ip in instances['Instances']:
              instance_ips.append(ip['PrivateIpAddress'])
      return instance_ips
  
  
  def prepare_autoscaling_group_and_get_hostnames():
      asg_client = boto3.client('autoscaling', region_name='us-east-1')
      asg_client.set_desired_capacity(AutoScalingGroupName=JEPSEN_GROUP_NAME, DesiredCapacity=DESIRED_INSTANCE_COUNT)
  
      instances = get_autoscaling_group_instances_ids(asg_client, JEPSEN_GROUP_NAME)
      counter = 0
      while len(instances) < DESIRED_INSTANCE_COUNT:
          time.sleep(5)
          instances = get_autoscaling_group_instances_ids(asg_client, JEPSEN_GROUP_NAME)
          counter += 1
          if counter > 30:
              raise Exception("Cannot wait autoscaling group")
  
      ec2_client = boto3.client('ec2', region_name='us-east-1')
      return get_instances_addresses(ec2_client, instances)
  
  
  def clear_autoscaling_group():
      asg_client = boto3.client('autoscaling', region_name='us-east-1')
      asg_client.set_desired_capacity(AutoScalingGroupName=JEPSEN_GROUP_NAME, DesiredCapacity=0)
      instances = get_autoscaling_group_instances_ids(asg_client, JEPSEN_GROUP_NAME)
      counter = 0
      while len(instances) > 0:
          time.sleep(5)
          instances = get_autoscaling_group_instances_ids(asg_client, JEPSEN_GROUP_NAME)
          counter += 1
          if counter > 30:
              raise Exception("Cannot wait autoscaling group")
  
  
  def save_nodes_to_file(instances, temp_path):
      nodes_path = os.path.join(temp_path, "nodes.txt")
      with open(nodes_path, 'w') as f:
          f.write("\n".join(instances))
          f.flush()
      return nodes_path
  
  def get_run_command(ssh_auth_sock, ssh_sock_dir, pr_info, nodes_path, repo_path, build_url, result_path, docker_image):
      return f"docker run --network=host -v '{ssh_sock_dir}:{ssh_sock_dir}' -e SSH_AUTH_SOCK={ssh_auth_sock} " \
             f"-e PR_TO_TEST={pr_info.number} -e SHA_TO_TEST={pr_info.sha} -v '{nodes_path}:/nodes.txt' -v {result_path}:/test_output " \
             f"-e 'CLICKHOUSE_PACKAGE={build_url}' -v '{repo_path}:/ch' -e 'CLICKHOUSE_REPO_PATH=/ch' -e NODES_USERNAME=ubuntu {docker_image}"
  
  if __name__ == "__main__":
      logging.basicConfig(level=logging.INFO)
  
      stopwatch = Stopwatch()
  
      pr_info = PRInfo()
  
      logging.info("Start at PR number %s, commit sha %s labels %s", pr_info.number, pr_info.sha, pr_info.labels)
  
      if pr_info.number != 0 and 'jepsen-test' not in pr_info.labels():
          logging.info("Not jepsen test label in labels list, skipping")
          sys.exit(0)
  
      gh = Github(get_best_robot_token())
  
      rerun_helper = RerunHelper(gh, pr_info, CHECK_NAME)
      if rerun_helper.is_already_finished_by_status():
          logging.info("Check is already finished according to github status, exiting")
          sys.exit(0)
  
      if not os.path.exists(TEMP_PATH):
          os.makedirs(TEMP_PATH)
  
      result_path = os.path.join(TEMP_PATH, "result_path")
      if not os.path.exists(result_path):
          os.makedirs(result_path)
  
      instances = prepare_autoscaling_group_and_get_hostnames()
      nodes_path = save_nodes_to_file(instances, TEMP_PATH)
  
      # always use latest
      docker_image = IMAGE_NAME
  
      build_name = get_build_name_for_check(CHECK_NAME)
  
      if pr_info.number == 0:
          version = get_version_from_repo(REPO_COPY)
          release_or_pr = ".".join(version.as_tuple()[:2])
      else:
          # PR number for anything else
          release_or_pr = str(pr_info.number)
  
      # This check run separately from other checks because it requires exclusive
      # run (see .github/workflows/jepsen.yml) So we cannot add explicit
      # dependency on a build job and using busy loop on it's results. For the
      # same reason we are using latest docker image.
      build_url = f"https://s3.amazonaws.com/clickhouse-builds/{release_or_pr}/{pr_info.sha}/{build_name}/clickhouse"
      head = requests.head(build_url)
      counter = 0
      while head.status_code != 200:
          time.sleep(10)
          head = requests.head(build_url)
          counter += 1
          if counter >= 180:
              post_commit_status(gh, pr_info.sha, CHECK_NAME, "Cannot fetch build to run", "error", "")
              raise Exception("Cannot fetch build")
  
      with SSHKey(key_value=get_parameter_from_ssm("jepsen_ssh_key") + '\n'):
          ssh_auth_sock = os.environ['SSH_AUTH_SOCK']
          auth_sock_dir = os.path.dirname(ssh_auth_sock)
          cmd = get_run_command(ssh_auth_sock, auth_sock_dir, pr_info, nodes_path, REPO_COPY, build_url, result_path, docker_image)
          logging.info("Going to run jepsen: %s", cmd)
  
          run_log_path = os.path.join(TEMP_PATH, "runlog.log")
  
          with TeePopen(cmd, run_log_path) as process:
              retcode = process.wait()
              if retcode == 0:
                  logging.info("Run successfully")
              else:
                  logging.info("Run failed")
  
      status = 'success'
      description = 'No invalid analysis found ヽ(‘ー`)ノ'
      jepsen_log_path = os.path.join(result_path, 'jepsen_run_all_tests.log')
      additional_data = []
      try:
          test_result = _parse_jepsen_output(jepsen_log_path)
          if any(r[1] == 'FAIL' for r in test_result):
              status = 'failure'
              description = 'Found invalid analysis (ﾉಥ益ಥ）ﾉ ┻━┻'
  
          compress_fast(os.path.join(result_path, 'store'), os.path.join(result_path, 'jepsen_store.tar.gz'))
          additional_data.append(os.path.join(result_path, 'jepsen_store.tar.gz'))
      except Exception as ex:
          print("Exception", ex)
          status = 'failure'
          description = 'No Jepsen output log'
          test_result = [('No Jepsen output log', 'FAIL')]
  
      s3_helper = S3Helper('https://s3.amazonaws.com')
      report_url = upload_results(s3_helper, pr_info.number, pr_info.sha, test_result, [run_log_path] + additional_data, CHECK_NAME)
  
      print(f"::notice ::Report url: {report_url}")
      post_commit_status(gh, pr_info.sha, CHECK_NAME, description, status, report_url)
  
      ch_helper = ClickHouseHelper()
      prepared_events = prepare_tests_results_for_clickhouse(pr_info, test_result, status, stopwatch.duration_seconds, stopwatch.start_time_str, report_url, CHECK_NAME)
      ch_helper.insert_events_into(db="gh-data", table="checks", events=prepared_events)
      clear_autoscaling_group()
  