If there was history data collected via the --poll-loops option, but not yet used to compute history stats, do so on script shutdown. This should reduce the amount of data lost when the script restarts, for example to reboot the system on which it runs, since --poll-loops allows for collection of history data beyond the 15-minute buffer size the dish (currently) holds.
This will only work if the script is shut down via SIGTERM or SIGINT (for example, by interrupting with Control-C).
The prior 2 changes made the handling of the first set of polled loops inconsistent with subsequent sets with respect to maintaining data across dish reboot. This change makes them both work the same (and correctly).
This restores the ability of -o to keep polled data across a reboot. It broke due to a simple issue in concatenate_history, but I realized that counter tracking for -o accumulated data was also a bit broken, so I fixed that, too.
Fix#31
Change the loop polling function (-o) to aggregate the history data each polling loop instead of just keeping the last polled history so it can be logged when reboot is detected. This allows for computing statistics across a longer period than the size of the dish's history buffer, which has been reduced to 15 minutes recently.
This change also makes it so data is not logged right away when dish reboot is detected, so the logging always happens at the specified interval whether there was a reboot or not.
Finally, change the poll loop counting so data is not emitted on the first loop when polling is configured. That made sense to do when the history buffer was large enough to have the entire period's worth of data, but now it just results in a short period in the log output every time the script is restarted.
Fixes#29
New command line option, -N or --numeric, that will cause all boolean values, including those in sequences/arrays, to be written as 1 or 0 instead of True or False.
Per request in issue 26.
WARNING: Use or non-use of this option with the database output scripts will change the schema of the data. sqlite doesn't care about that, because it stores booleans as integers, anyway, but InfluxDB will trip an error if you try to record data points with this option to a database that has data point recorded without it, or vice versa.
Currently only implemented for sqlite, since with InfluxDB, there is the complication that the InfluxDB server may not be available to query at script start time. Also, it only applies when polling all samples, which is not the default, and even then can be disabled with either --skip-query or --no-counter options.
Remove the crontab instructions from the README, since the periodic loop functionality is probably now a better approach for periodic recording of stats data.
A few things I noticed while porting this code to the JSON script. The only real change here is fixing the bulk history output to print UTC time instead of local time.
This further complicates the code, for functionality that probably only I care about, but when computing stats for relatively long time intervals, it really hurts when the dish reboots and up to an entire time period's worth of data is lost at exactly the point where it may have been having interesting behavior.
Probably not terribly useful unless someone needs to tunnel through a different network to get to their dish, but it makes testing the dish unreachable case a lot easier. This was complicated a bit by the fact that a channel (and therefor the dish IP and port) is needed to get the list of alert types via reflection due to prior changes.
This exposed some issues with the error message for dish unreachable, so fixed those.
I'm sure this isn't a particularly optimal implementation, but it's functional.
This required exporting knowledge about the types that will be returned per field from starlink_grpc and moving things around a little in dish_common.
Add latency and usage stat groups to the stats computed from history samples. This includes an attempt at characterizing latency under network load, too, but I don't know how useful that's going to be, so I have marked that as experimental, in case it needs algorithmic improvements.
The new groups are enabled on the command line by use of the new mode names: ping_latency, ping_loaded_latency, and usage.
Add valid_s to the obstruction details status group. This was the only missing field from everything available in the status response (other than wedge_fraction_obstructed, which seems redundant to wedge_abs_fraction_obstructed), and I only skipped it because I don't know what it means exactly. Adding it now with my best guess at a description in order to avoid a compatibility breaking change later.
Closes#5
This restores the functionality that the InfluxDB status polling script had whereby instead of using a new grpc Channel for each RPC call, it would keep one open and reuse it, retrying one time if it ever fails, which can happen if the connection is lost between calls. Now all the grpc scripts have this functionality.
Also, hedge a little bit in the descriptions for what the obstruction detail fields means, given that I'm not sure my assumptions there are correct.
Combined the history and status scripts for each data backend and moved some of the shared code into a separate module. Since the existing script names were not appropriate for the new combined versions, the main entry point scripts now have new names, which better conform with Python module name conventions: dish_grpc_text.py, dish_grpc_mqtt.py, and dish_grpc_influx.py. pylint seems happier with those names, at any rate.
Switched the argument parsing from getopt to argparse, since that better facilitates sharing the common bits. The whole command line interface is now different in that the selection of data groups to process must be made as required arg(s) rather than option flags, but for the most part, the scripts support choosing an arbitrary list of groups and will process them all.
Split the monster main() functions into a more reasonable set of functions.
Added new functions to starlink_grpc to support getting the status, which returns the data in a form similar to the history data functions. Reformatted the starlink_grpc module docstring to render better with pydoc. Also changed the way sequence data field names are reported so that the consuming scripts can name them correctly without resorting to hacky special casing based on specific field names. This would subtly break the old scripts that had been expecting the old naming, but those scripts are now gone.
The code is harder to follow now, IMO, but this should allow adding of new features and/or data backends without having to make the same change in 6 places as had been the case. To that end, dish_grpc_text now supports bulk history mode, since it was trivial to add once I had it implemented in order to support that feature for dish_grpc_influx.
