ray/dashboard/modules/log/tests/test_log.py

import sys
import logging
import requests
import time
import traceback
import html.parser
import urllib.parse
import pytest
import ray
from ray._private.test_utils import (
    format_web_url,
    wait_until_server_available,
)

from ray.dashboard.tests.conftest import *  # noqa

logger = logging.getLogger(__name__)


class LogUrlParser(html.parser.HTMLParser):
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self._urls = []

    def handle_starttag(self, tag, attrs):
        if tag == "a":
            self._urls.append(dict(attrs)["href"])

    def error(self, message):
        logger.error(message)

    def get_urls(self):
        return self._urls


def test_log(disable_aiohttp_cache, ray_start_with_dashboard):
    @ray.remote
    def write_log(s):
        print(s)

    # Make sure that this works with unicode
    test_log_text = "test_log_text"
    ray.get(write_log.remote(test_log_text))

    test_file = "test.log"
    with open(
        f"{ray.worker.global_worker.node.get_logs_dir_path()}/{test_file}", "w"
    ) as f:
        f.write(test_log_text)
    assert wait_until_server_available(ray_start_with_dashboard["webui_url"]) is True
    webui_url = ray_start_with_dashboard["webui_url"]
    webui_url = format_web_url(webui_url)
    node_id = ray_start_with_dashboard["node_id"]

    timeout_seconds = 10
    start_time = time.time()
    last_ex = None
    while True:
        time.sleep(1)
        try:
            response = requests.get(webui_url + "/log_index")
            response.raise_for_status()
            parser = LogUrlParser()
            parser.feed(response.text)
            all_nodes_log_urls = parser.get_urls()
            assert len(all_nodes_log_urls) == 1

            response = requests.get(all_nodes_log_urls[0])
            response.raise_for_status()
            parser = LogUrlParser()
            parser.feed(response.text)

            # Search test_log_text from all worker logs.
            parsed_url = urllib.parse.urlparse(all_nodes_log_urls[0])
            paths = parser.get_urls()
            urls = []
            for p in paths:
                if "worker" in p:
                    urls.append(parsed_url._replace(path=p).geturl())

            for u in urls:
                response = requests.get(u)
                response.raise_for_status()
                if test_log_text in response.content.decode(encoding="utf-8"):
                    break
            else:
                raise Exception(f"Can't find {test_log_text} from {urls}")

            # Test range request.
            response = requests.get(
                webui_url + f"/logs/{test_file}", headers={"Range": "bytes=2-5"}
            )
            response.raise_for_status()
            assert response.text == test_log_text[2:6]

            # Test logUrl in node info.
            response = requests.get(webui_url + f"/nodes/{node_id}")
            response.raise_for_status()
            node_info = response.json()
            assert node_info["result"] is True
            node_info = node_info["data"]["detail"]
            assert "logUrl" in node_info
            assert node_info["logUrl"] in all_nodes_log_urls
            break
        except Exception as ex:
            last_ex = ex
        finally:
            if time.time() > start_time + timeout_seconds:
                ex_stack = (
                    traceback.format_exception(
                        type(last_ex), last_ex, last_ex.__traceback__
                    )
                    if last_ex
                    else []
                )
                ex_stack = "".join(ex_stack)
                raise Exception(f"Timed out while testing, {ex_stack}")


def test_log_proxy(ray_start_with_dashboard):
    assert wait_until_server_available(ray_start_with_dashboard["webui_url"]) is True
    webui_url = ray_start_with_dashboard["webui_url"]
    webui_url = format_web_url(webui_url)

    timeout_seconds = 5
    start_time = time.time()
    last_ex = None
    test_log_text = "test_log_text"
    test_file = "test.log"
    with open(
        f"{ray.worker.global_worker.node.get_logs_dir_path()}/{test_file}", "w"
    ) as f:
        f.write(test_log_text)
    while True:
        time.sleep(1)
        try:
            # Test range request.
            response = requests.get(
                f"{webui_url}/log_proxy?url={webui_url}/logs/{test_file}",
                headers={"Range": "bytes=2-5"},
            )
            response.raise_for_status()
            assert response.text == test_log_text[2:6]
            # Test 404.
            response = requests.get(
                f"{webui_url}/log_proxy?" f"url={webui_url}/logs/not_exist_file.log"
            )
            assert response.status_code == 404
            break
        except Exception as ex:
            last_ex = ex
        finally:
            if time.time() > start_time + timeout_seconds:
                ex_stack = (
                    traceback.format_exception(
                        type(last_ex), last_ex, last_ex.__traceback__
                    )
                    if last_ex
                    else []
                )
                ex_stack = "".join(ex_stack)
                raise Exception(f"Timed out while testing, {ex_stack}")


if __name__ == "__main__":
    sys.exit(pytest.main(["-v", __file__]))