get working

feeder/README.md

@@ -4,8 +4,9 @@ This is an MQTT sensor to send NOAA space weather data to Home Assistant. Fetchi
 
 1. Create an account at <https://urs.earthdata.nasa.gov>
 2. `pip install -r requirements.txt`
-3. `sudo apt install p7zip-full redis-server`
-4. `sudo systemctl enable --now redis-server`
+3. `sudo apt-get install p7zip-full redis-server`
+4. `sudo apt-get install dvipng texlive-latex-extra texlive-fonts-recommended cm-super`
+5. `sudo systemctl enable --now redis-server`
 
 ### Google Chrome
 

feeder/cache.py

@@ -1,11 +1,8 @@
 import logging
 import os
 import pickle
-import signal
 import sys
-import threading
 import time
-import traceback
 from datetime import datetime
 
 from redis import Redis
@@ -22,28 +19,22 @@ if not CDDIS_USERNAME or not CDDIS_PASSWORD:
     sys.exit(1)
 
 
-def update_cache():
-    try:
-        redis = Redis(host='localhost', port=6379, db=0)
-        redis.flushall()
-        while True:
-            utc_hr = datetime.utcnow().hour
-            logging.info('Fetching latest IONEX data')
-            logging.info(f'Using hour {utc_hr}')
-            ionex_data = fetch_latest_ionex(CDDIS_USERNAME, CDDIS_PASSWORD)
-            parsed_data = []
-            for tecmap, epoch in get_tecmaps(ionex_data):
-                parsed_dt = parse_ionex_datetime(epoch)
-                parsed_data.append((tecmap, parsed_dt))
-            redis.set('tecmap_data', pickle.dumps(parsed_data))
-            logging.info('Scrape complete')
-            time.sleep(1800)  # 30 minutes
-    except:
-        logging.critical(traceback.format_exc())
-        os.kill(os.getpid(), signal.SIGKILL)
+def main():
+    redis = Redis(host='localhost', port=6379, db=0)
+    redis.flushall()
+    while True:
+        utc_hr = datetime.utcnow().hour
+        logging.info('Fetching latest IONEX data')
+        logging.info(f'Using hour {utc_hr}')
+        ionex_data = fetch_latest_ionex(CDDIS_USERNAME, CDDIS_PASSWORD)
+        parsed_data = []
+        for tecmap, epoch in get_tecmaps(ionex_data):
+            parsed_dt = parse_ionex_datetime(epoch)
+            parsed_data.append((tecmap, parsed_dt))
+        redis.set('tecmap_data', pickle.dumps(parsed_data))
+        logging.info('Scrape complete')
+        time.sleep(1800)  # 30 minutes
 
 
 if __name__ == '__main__':
-    threading.Thread(target=update_cache).start()
-    while True:
-        time.sleep(3600)
+    main()

feeder/global-image.py

@@ -22,36 +22,35 @@ LON_RANGE_MAX = 180
 def main():
     redis = Redis(host='localhost', port=6379, db=0)
 
-    while True:
-        utc_hr = datetime.utcnow().hour
-        logging.info(f'Generating plot for hour {utc_hr}')
+    utc_hr = datetime.utcnow().hour
+    logging.info(f'Generating plot for hour {utc_hr}')
 
-        ionex_data: List = pickle.loads(redis.get('tecmap_data'))
-        while ionex_data is None:
-            logging.warning('Redis has not been populated yet. Is cache.py running? Sleeping 10s...')
-            time.sleep(10)
+    ionex_data: List = pickle.loads(redis.get('tecmap_data'))
+    while ionex_data is None:
+        logging.warning('Redis has not been populated yet. Is cache.py running? Sleeping 10s...')
+        time.sleep(10)
 
-        for tecmap, epoch in ionex_data:
-            if epoch.hour == utc_hr:
-                plt = plot_tec_map(tecmap, [float(LON_RANGE_MIN), float(LON_RANGE_MAX)], [float(LAT_RANGE_MIN), float(LAT_RANGE_MAX)], timestamp=epoch)[1]
+    for tecmap, epoch in ionex_data:
+        if epoch.hour == utc_hr:
+            plt = plot_tec_map(tecmap, [float(LON_RANGE_MIN), float(LON_RANGE_MAX)], [float(LAT_RANGE_MIN), float(LAT_RANGE_MAX)], timestamp=epoch)[1]
+            buf = io.BytesIO()
+            plt.savefig(buf, format='png', bbox_inches='tight', pad_inches=0, dpi=110)
+            plt.close()
+            del plt
 
-                buf = io.BytesIO()
-                plt.savefig(buf, format='png', bbox_inches='tight', pad_inches=0, dpi=110)
-                plt.close()
-                del plt
+            buf.seek(0)
+            img = Image.open(buf)
+            buf = io.BytesIO()
+            img.save(buf, format='PNG')
 
-                buf.seek(0)
-                img = Image.open(buf)
-                buf = io.BytesIO()
-                img.save(buf, format='PNG')
-
-                redis.set('global_map', buf.getvalue())
-                buf.close()
+            redis.set('global_map', buf.getvalue())
+            buf.close()
+    logging.info(f'Finished hour {utc_hr}')
 
 
 if __name__ == '__main__':
     main()
-    schedule.every().hour.at(":00").do(main)
+    schedule.every().hour.at(':00').do(main)
     while True:
         schedule.run_pending()
         time.sleep(1)