add pipeline status monitor

.gitignore

@@ -162,3 +162,4 @@ stixcore/data/test/ephemeris/spice/kernels/mk/*.abs
 stixcore/data/soop/
 stixcore/data/publish/
 stixcore/data/test/products/end2end/
+monitor_status.json

setup.cfg

@@ -36,6 +36,7 @@ install_requires =
 [options.entry_points]
 console_scripts =
     stix-pipeline-status = stixcore.processing.pipeline_status:main
+    stix-pipeline-monitor = stixcore.processing.pipeline_monitor:main
     stix-pipeline = stixcore.processing.pipeline:main
     stix-pipeline-cli = stixcore.processing.pipeline_cli:main
     stix-publish = stixcore.processing.publish:main

stixcore/processing/pipeline_monitor.py

@@ -0,0 +1,103 @@
+import sys
+import json
+import smtplib
+import argparse
+import datetime
+from pprint import pprint, pformat
+from pathlib import Path
+
+from dateutil import parser as dateparser
+
+from stixcore.config.config import CONFIG
+from stixcore.processing.pipeline_status import get_status
+from stixcore.util.logging import get_logger
+
+__all__ = ['pipeline_monitor']
+
+logger = get_logger(__name__)
+
+
+def pipeline_monitor(args):
+    """Status logger and notification script for the pipeline.
+
+    SetUp via cron.
+    Query the number of open files still to process. Logs that number into a status file
+    and checks if the the number is constantly equal or increasing.
+
+    Sends an notification via mail if a possible pipeline stuck is detected.
+    """
+    parser = argparse.ArgumentParser(description='stix pipeline monitor')
+    parser.add_argument("-p", "--port",
+                        help="connection port for the status info server",
+                        default=CONFIG.getint('Pipeline', 'status_server_port', fallback=12345),
+                        type=int)
+
+    parser.add_argument("-s", "--save_file",
+                        help="file to persist last status",
+                        default="monitor_status.json", type=str)
+
+    args = parser.parse_args(args)
+
+    ret = get_status("next".encode(), args.port)
+    open_files = int(ret.replace("open files: ", ""))
+    save_file = Path(args.save_file)
+
+    status = {}
+    status['last'] = []
+
+    if save_file.exists():
+        with open(save_file, "+r") as f:
+            try:
+                status = json.load(f)
+            except Exception:
+                pass
+
+    status['last'].append({"date": datetime.datetime.now().isoformat(timespec='milliseconds'),
+                           "open": open_files})
+
+    status['last'] = status['last'][-9:]
+
+    if len(status['last']) == 9 and open_files > 0:
+        stuck = True
+        last_open = status['last'][0]
+        for la in status['last'][1:]:
+            if la['open'] <= 0 or la['open'] < last_open['open']:
+                stuck = False
+                break
+            last_open = la
+        if stuck:
+            fd = dateparser.parse(status['last'][0]['date'])
+            ld = dateparser.parse(status['last'][-1]['date'])
+            if (ld - fd).days >= 1:
+                if CONFIG.getboolean('Publish', 'report_mail_send', fallback=False):
+                    try:
+                        sender = CONFIG.get('Pipeline', 'error_mail_sender', fallback='')
+                        receivers = CONFIG.get('Publish', 'report_mail_receivers').split(",")
+                        host = CONFIG.get('Pipeline', 'error_mail_smpt_host', fallback='localhost')
+                        port = CONFIG.getint('Pipeline', 'error_mail_smpt_port', fallback=25)
+                        smtp_server = smtplib.SMTP(host=host, port=port)
+                        message = f"""Subject: StixCore Pipeline Monitor
+
+Pipeline stuck?
+
+{pformat(status)}
+
+Login to server and check
+"""
+
+                        smtp_server.sendmail(sender, receivers, message)
+                    except Exception as e:
+                        logger.error(f"Error: unable to send monitor email: {e}")
+
+    with open(save_file, "w") as f:
+        json.dump(status, f, indent=4)
+
+    pprint(status)
+
+
+def main():
+    pipeline_monitor(sys.argv[1:])
+
+
+if __name__ == '__main__':
+    main()

stixcore/processing/pipeline_status.py

@@ -5,7 +5,7 @@
 from stixcore.config.config import CONFIG
 from stixcore.util.logging import get_logger
 
-__all__ = ['pipeline_status']
+__all__ = ['pipeline_status', 'get_status']
 
 logger = get_logger(__name__)
 
@@ -28,7 +28,7 @@ def get_status(msg, port=12346):
             line = server.readline()
             if not line:
                 break
-            print(f"{line.decode().rstrip()}")
+            return f"{line.decode().rstrip()}"
 
     finally:
         sock.close()
@@ -69,7 +69,7 @@ def pipeline_status(args):
 
     cmd = args.cmd.encode() if args.cmd else b'last'
 
-    get_status(cmd, args.port)
+    print(get_status(cmd, args.port))
 
 
 def main():