From 6cd1b4fe4b18c538fe73eedd72e7ec584b0b1475 Mon Sep 17 00:00:00 2001
From: Arne Tarara <arne@datafuse.de>
Date: Sat, 27 Aug 2022 17:21:35 +0200
Subject: [PATCH 1/2] Added GUDE script to read from power meter

---
 tools/GUDEPowerMeter/README.md              | 13 +++++
 tools/GUDEPowerMeter/check_gude_modified.py | 60 +++++++++++++++++++++
 2 files changed, 73 insertions(+)
 create mode 100644 tools/GUDEPowerMeter/README.md
 create mode 100644 tools/GUDEPowerMeter/check_gude_modified.py

diff --git a/tools/GUDEPowerMeter/README.md b/tools/GUDEPowerMeter/README.md
new file mode 100644
index 0000000..db49cea
--- /dev/null
+++ b/tools/GUDEPowerMeter/README.md
@@ -0,0 +1,13 @@
+Slimmed down version of check_gude.py from https://github.com/gudesystems/check_gude.py
+for the Blauer Engel für Software Measurements
+===============
+
+- Create **venv**: `python3 -m venv venv`
+- Activate: `source venv/bin/activate`
+- Install requests: `pip3 install requests`
+- Supply the `-i` parameter for the resolution in ms and the `-x` parameter for the IP
+    + Example: `python3 check_gude_modified.py -i 100 -x 192.168.178.1`
+   
+The script reports the Watts by default. If you want Joules, which will be the integration
+over the time since the last poll, supply `--joules`
+
diff --git a/tools/GUDEPowerMeter/check_gude_modified.py b/tools/GUDEPowerMeter/check_gude_modified.py
new file mode 100644
index 0000000..5364e98
--- /dev/null
+++ b/tools/GUDEPowerMeter/check_gude_modified.py
@@ -0,0 +1,60 @@
+#!/usr/bin/env python3
+
+import requests
+import json
+import time
+import subprocess
+
+def main(ip, resolution, joules):
+    url = f'http://{ip}/status.json'
+
+    ONLY_VALUES = 0x4000
+    cgi = {'components': ONLY_VALUES}  # simple-sensors + and only values
+
+    resolution = float(resolution);
+
+    target_sleep_time = resolution/1000.0
+
+    while True: # loop until CTRL+C
+        timestamp_before = time.time_ns()
+        time.sleep(target_sleep_time)
+
+        data = json.loads(requests.get(url, params=cgi, verify=False, auth=None).text)
+
+        # print(data) # DEBUG
+        timestamp_after = time.time_ns()
+        effective_sleep_time = timestamp_after - timestamp_before
+        # print(effective_sleep_time / 1_000_000_000) # DEBUG
+        conversion_factor = effective_sleep_time / 1_000_000 # we want microjoule. Therefore / 10**9 to get seconds and then * 10**3 to get mJ
+        if joules:
+            print(int(timestamp_after / 1_000), int(data["sensor_values"][0]['values'][0][4]['v']*conversion_factor), flush=True)
+        else:
+            print(int(timestamp_after / 1_000), int(data["sensor_values"][0]['values'][0][4]['v']), flush=True)
+
+
+if __name__ == "__main__":
+    import argparse
+
+    parser = argparse.ArgumentParser()
+    parser.add_argument("-i", type=int, help="Resolution")
+    parser.add_argument("-x", type=str, help="IP")
+    parser.add_argument("--joules", action='store_true', help="Report Joules instead of Watts")
+
+    args = parser.parse_args()
+
+    if args.i is None:
+        parser.print_help()
+        print("Please supply -i to set resolution in milliseconds")
+        exit(2)
+
+    if args.x is None:
+        parser.print_help()
+        print("Please supply -x to set the IP where to find the JSON API from GUDE")
+        exit(2)
+
+    if args.joules is None:
+        parser.print_help()
+        print("Please supply -x to set the IP where to find the JSON API from GUDE")
+        exit(2)
+
+    main(args.x, args.i, args.joules)
-- 
GitLab


From d6424685045b367522dfdf2f19d087ddd7854c69 Mon Sep 17 00:00:00 2001
From: Arne Tarara <arne@datafuse.de>
Date: Sat, 27 Aug 2022 17:27:25 +0200
Subject: [PATCH 2/2] Help was wrong

---
 tools/GUDEPowerMeter/check_gude_modified.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/GUDEPowerMeter/check_gude_modified.py b/tools/GUDEPowerMeter/check_gude_modified.py
index 5364e98..9cf3407 100644
--- a/tools/GUDEPowerMeter/check_gude_modified.py
+++ b/tools/GUDEPowerMeter/check_gude_modified.py
@@ -54,7 +54,7 @@ if __name__ == "__main__":
 
     if args.joules is None:
         parser.print_help()
-        print("Please supply -x to set the IP where to find the JSON API from GUDE")
+        print("Please supply --joules to switch to Joules reporting")
         exit(2)
 
     main(args.x, args.i, args.joules)
-- 
GitLab