Report name

.vscode/launch.json

@@ -10,7 +10,7 @@
             "gevent": true
         },
         {
-            "name": "Run locust",
+            "name": "Run current locust scenario headless, 5 users",
             "type": "python",
             "request": "launch",
             "module": "locust",
@@ -22,6 +22,18 @@
             ],
             "console": "integratedTerminal",
             "gevent": true
+        },
+        {
+            "name": "Run current locust scenario with WebUI",
+            "type": "python",
+            "request": "launch",
+            "module": "locust",
+            "args": [
+                "-f",
+                "${file}"
+            ],
+            "console": "integratedTerminal",
+            "gevent": true
         }
     ]
 }

docs/developing-locust.rst

@@ -33,6 +33,8 @@ If you install `pre-commit <https://pre-commit.com/>`_, linting and format check
 
 Before you open a pull request, make sure all the tests work. And if you are adding a feature, make sure it is documented (in ``docs/*.rst``).
 
+If you're in a hurry or don't have access to a development environment, you can simply use `Codespaces <https://github.com/features/codespaces>`_, the github cloud development environment.  On your fork page, just click on *Code* then on *Create codespace on <branch name>*, and voila, your ready to code and test.
+
 Testing your changes
 ====================
 
@@ -51,6 +53,18 @@ To only run a specific suite or specific test you can call `pytest <https://docs
 
     $ pytest locust/test/test_main.py::DistributedIntegrationTests::test_distributed_tags
 
+Debugging
+=========
+
+Debugging Locust is quite easy with Vscode: 
+
+- Place breakpoints, 
+- Select a python file or a scenario (ex: ```examples/basic.py``) 
+- Check that the Poetry virtualenv is correctly detected (bottom right)
+- Open the action *Debug using launch.json*. You will have the choice between debugging the python file, the scenario with WebUI or in headless mode.
+- It could be rerun with the F5 shortkey
+
+
 Formatting and linting
 ======================
 

locust/html.py

@@ -12,7 +12,7 @@
 from .runners import STATE_STOPPED, STATE_STOPPING, MasterRunner
 from .stats import sort_stats, update_stats_history
 from .user.inspectuser import get_ratio
-from .util.date import format_utc_timestamp
+from .util.date import format_duration, format_utc_timestamp
 
 PERCENTILES_FOR_HTML_REPORT = [0.50, 0.6, 0.7, 0.8, 0.9, 0.95, 0.99, 1.0]
 DEFAULT_BUILD_PATH = os.path.join(os.path.dirname(os.path.abspath(__file__)), "webui", "dist")
@@ -88,6 +88,7 @@ def get_html_report(
             ],
             "start_time": start_time,
             "end_time": end_time,
+            "duration": format_duration(stats.start_time, stats.last_request_timestamp),
             "host": escape(str(host)),
             "history": history,
             "show_download_link": show_download_link,

locust/util/date.py

@@ -1,5 +1,15 @@
 from datetime import datetime, timezone
 
+import humanfriendly
+
 
 def format_utc_timestamp(unix_timestamp):
     return datetime.fromtimestamp(unix_timestamp, timezone.utc).strftime("%Y-%m-%dT%H:%M:%SZ")
+
+
+def format_safe_timestamp(unix_timestamp):
+    return datetime.fromtimestamp(unix_timestamp).strftime("%Y-%m-%d %Hh%M")
+
+
+def format_duration(start_unix_timestamp, end_unix_timestamp):
+    return humanfriendly.format_timespan(end_unix_timestamp - start_unix_timestamp)

locust/web.py

@@ -10,7 +10,6 @@
 from io import StringIO
 from itertools import chain
 from json import dumps
-from time import time
 from typing import TYPE_CHECKING, Any
 
 import gevent
@@ -39,7 +38,7 @@
 from .stats import StatsCSV, StatsCSVFileWriter, StatsErrorDict, sort_stats
 from .user.inspectuser import get_ratio
 from .util.cache import memoize
-from .util.date import format_utc_timestamp
+from .util.date import format_safe_timestamp
 from .util.timespan import parse_timespan
 
 if TYPE_CHECKING:
@@ -318,17 +317,25 @@ def stats_report() -> Response:
             )
             if request.args.get("download"):
                 res = app.make_response(res)
-                res.headers["Content-Disposition"] = f"attachment;filename=report_{time()}.html"
+                host = self.environment.host or "no host"
+                res.headers["Content-Disposition"] = (
+                    f"attachment;filename=Locust - {format_safe_timestamp(self.environment.stats.start_time)} - "
+                    + f"{self.environment.locustfile} - {host}.html"
+                )
             return res
 
         def _download_csv_suggest_file_name(suggest_filename_prefix: str) -> str:
             """Generate csv file download attachment filename suggestion.
 
             Arguments:
-            suggest_filename_prefix: Prefix of the filename to suggest for saving the download. Will be appended with timestamp.
+            suggest_filename_prefix: Prefix of the filename to suggest for saving the download.
+            Will be appended with timestamp.
             """
-
-            return f"{suggest_filename_prefix}_{time()}.csv"
+            host = self.environment.host or "no host"
+            return (
+                f"Locust - {format_safe_timestamp(self.environment.stats.start_time)} - "
+                + f"{self.environment.locustfile} - {host} - {suggest_filename_prefix}.csv"
+            )
 
         def _download_csv_response(csv_data: str, filename_prefix: str) -> Response:
             """Generate csv file download response with 'csv_data'.

locust/webui/src/pages/HtmlReport.tsx

@@ -42,6 +42,7 @@ export default function HtmlReport({
   showDownloadLink,
   startTime,
   endTime,
+  duration,
   charts,
   host,
   exceptionsStatistics,
@@ -75,7 +76,7 @@ export default function HtmlReport({
             <Box sx={{ display: 'flex', columnGap: 0.5 }}>
               <Typography fontWeight={600}>During:</Typography>
               <Typography>
-                {formatLocaleString(startTime)} - {formatLocaleString(endTime)}
+                {formatLocaleString(startTime)} - {formatLocaleString(endTime)} ({duration})
               </Typography>
             </Box>
 

locust/webui/src/test/mocks/swarmState.mock.ts

@@ -36,6 +36,7 @@ export const swarmReportMock: IReport = {
   showDownloadLink: true,
   startTime: '2024-02-26 12:13:26',
   endTime: '2024-02-26 12:13:26',
+  duration: '0 seconds',
   host: 'http://0.0.0.0:8089/',
   exceptionsStatistics: [],
   requestsStatistics: [],

locust/webui/src/types/swarm.types.ts

@@ -73,6 +73,7 @@ export interface IReport {
   showDownloadLink: boolean;
   startTime: string;
   endTime: string;
+  duration: string;
   host: string;
   charts: ICharts;
   requestsStatistics: ISwarmStat[];