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thrimbletrimmer-solid
HubbeKing-multiplatform-builds
bus-progress-ui
master
bus-post-processing
chrusher/bus_synthesizer
mike/faster-chat-merge
mike/chat-no-end-time
chrusher-playlist-thumbnails
chrusher-thumbnail-frontend
mike/prizebot
condor-scripts
mike/chat-subs
mike/bad-segment-hack
mike/backfill-extras
mike/cropping
mike/shorts
mike/download-frame-2
mike/debug-playlists
chrusher/backfiller_error_handler
sheet-updates
mike/generate-videos
suspect-segments
mike/testing
gunner/thrimbletrimmer-improvements
mike/render-dashboard
mike/database/initial
downloader/follow-game
mike/downloader/conn-pooling
mike/common/split-up
mike/backdoor
mike/downloader/handle-404
mike/non-restreamer-stats
archive/original-v2.1
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102 Commits (27c6abfca9156593323c6e1a5f15addd52934897)

Author SHA1 Message Date
Mike Lang 78d0f227e8 backfiller: Include channel name being backfilled in logs 1 year ago
Mike Lang 4e51c3d6b7 backfiller: Update node list from database more often 
5min is a long time when we want to pull a node from circulation,
and it's a very lightweight operation. So let's say 30 seconds.
 1 year ago
Mike Lang f324ef23cf backfiller: Fix critical issues with backfilling extras 1 year ago
Mike Lang 9f523c65cd backfiller: Allow backfilling of non-segment directories 
These are referred to as "extras" and all files in all subdirectories are backfilled
if not present.
 1 year ago
Mike Lang 78ee38a4b9 backfiller: Don't consider 404s for chat batches to be an error 2 years ago
Mike Lang c493869b9a Have list_segment_files also list chat archives 
Otherwise backfilling of chat doesn't work
 2 years ago
Mike Lang c50224415c more backfiller chat fixes 
fixup: more backfiller fixes

Enable backfilling of chat logs
 2 years ago
Mike Lang f8b3ace148 Backfill chat archives under the "chat" quality 2 years ago
Mike Lang 1add3c5c22 Implement tombstoning to allow for segment deletion 
Rarely, we find ourselves needing to explicitly delete some data, eg. something that shouldn't
have been public and should be removed from all records.

It would also be nice if we could "clean up" bad versions of the same segment,
which occasionally come up when downloaders have issues.

With our distributed segment database, this is actually rather difficult as deleting the data
from any one server would cause it to be restored from the others. It was only possible
by stopping all backfill, deleting the data on all servers, then starting backfill again.

Here we introduce a more practical approach. An operator creates an empty flag file
with the same name as the segment to be deleted, but with a `.tombstone` extension.
eg. to delete a file `/segments/desertbus/source/2019-11-13T02/45:51.608000-2.0-full-7IS92rssMzoSBQDIevHStbTNy-URRV3Vw-jzZ6pwOZM.ts`,
you would create a tombstone `/segments/desertbus/source/2019-11-13T02/45:51.608000-2.0-full-7IS92rssMzoSBQDIevHStbTNy-URRV3Vw-jzZ6pwOZM.tombstone`.

These tombstone files do two important things:
* They hide the segment from being listed, which both means:
  * It can't be restreamed or put into a video
  * It can't be backfilled to other nodes
* The tombstone files themselves do get backfilled to other nodes, so you only need to mark them on one server.

Once the tombstone has propagated to all nodes, the segment file can be deleted independently on each one.

We chose not to have a tombstone automatically trigger a segment deletion for safety reasons.
 2 years ago
Mike Lang e63aa53019 Remove left-over usage of encode_strings 
More py3 breakage
 3 years ago
Mike Lang 21856c68aa Fix all instances of file.write() for py3 
In python 3, file.write() may do a partial write and returns the number of characters written.
In order to not lose data, we need to wrap every instance of file.write() with our new
common.writeall() wrapper that loops until the data is actually written.
 3 years ago
Mike Lang a56f6859bb more py3 fixes 3 years ago
Mike Lang 7d4eb3c8db py3 fixes for backfiller 3 years ago
HubbeKing 6d790a1b36 Do a first naive pass for py3 compatibility 
Check that open() calls for reading and writing use binary modes
Use alpine version with py3-pip package
Use python3 in Dockerfile CMD
Remove sys.setdefaultencoding() "hack"
Simplify ensure_directory() in common.common package
 3 years ago
HubbeKing 86f7823348 Replace calls to gevent.signal() with gevent.signal_handler() 
gevent.signal() was removed in gevent 1.5a4, see http://www.gevent.org/api/gevent.signal.html
Removed on Feb 5th, see https://github.com/gevent/gevent/pull/1530
 4 years ago
Christopher Usher 986c9a3413 removed redundant option 5 years ago
Christopher Usher 9c77dd1f40 added the ability to generate a webpage with all coverage maps 5 years ago
Mike Lang 71333cf826 backfiller: Only run one manager, not one per channel 
Then treat backfilling each channel just like backfilling each quality.

This is conceptually simpler (only one kind of thing, a (channel, quality))
and has better behaviour when a node is down (we only have one lot of error handling around it).

It also means we aren't asking the database for the same info once per channel,
and cuts down on logging noise.
 5 years ago
Mike Lang ff18c7df54 backfiller: Fix issue with tracking metrics after get_nodes() failure 
There isn't an easy, clean way to pass in the DB hostname there,
and neither label is very valuable. Let's just drop it entirely.
 5 years ago
Mike Lang d63ae573b7 backfiller: Collect metrics on http calls 5 years ago
Christopher Usher dc1c31fef4 fixes to the error handling as suggested by ekim 5 years ago
Christopher Usher 553b11bc84 typo in error handler 5 years ago
Christopher Usher 9dfffe0a62 improvements based on ekims suggestions plus delete_hours yeilds to the 
rest of the backfiller
 5 years ago
Christopher Usher 8579fcaeea check start is not None before checking whether hour is before start 5 years ago
Christopher Usher f8835cd253 documentation for --delete-old; check that start is not none 5 years ago
Christopher Usher a361249145 renamed delete_before to keep_hours 5 years ago
Christopher Usher be562b8448 added warnings if keeping fewer hours than backfilling 5 years ago
Christopher Usher 9d81569d98 Added the ability to delete old hours 5 years ago
Mike Lang 7183b25ce9
Merge pull request #119 from ekimekim/mike/database-resilience 
Changes to improve behaviour if the DB is down
 5 years ago
Christopher Usher 929308f3e7 started on the segment_coverage service 5 years ago
Mike Lang 0e437566aa backfiller: Don't crash on DB errors 
We move all connection handling into get_nodes().
This means that problems connecting won't cause further errors
and cause the application to completely crash.

In turn, this means that the behaviour if the database goes down becomes
"continue backfilling from the nodes we know about" instead of crashing.
 5 years ago
Christopher Usher ccb7f3c684 now use parse_segment_path to get hash from filename 5 years ago
Christopher Usher 36da1926d0 fixes for ekims suggestions 5 years ago
Christopher Usher 34785d1179 now checking the hashes 5 years ago
Christopher Usher b0562495d2 reject mismatched hashes; more metrics 5 years ago
Christopher Usher 120a5a7de0 started on checking the hash 5 years ago
Chris Usher 557ddddc31 better logging for the backfiller 5 years ago
Christopher Usher 44f0e0defb changed it back so only the name is checked 5 years ago
Chris Usher aab46f9765 fixed localhost bug in backfiller 5 years ago
Christopher Usher 84270c02ec logging fix 5 years ago
Christopher Usher fdb5d20db7 fix to database logging 5 years ago
Christopher Usher 497845f2da typos in comments 5 years ago
Christopher Usher 361e577474 fixes based on ekimekims suggestions 5 years ago
Christopher Usher 720684a388 refactoring to have consistent terminology 5 years ago
Christopher Usher 6d38250674 starting to refactor stream to channel and variant to quality 5 years ago
Mike Lang f50276bd01 backfiller: Expose recent_cutoff as CLI arg and increase it to 120s default 
In testing, GDQ's stream delay went up over 1min, which caused backfillers to backfill
segments at the same time they were downloaded. We increase the window for now,
and also make it configurable.
 5 years ago
Mike Lang 29040a166c backfiller: Allow multiple concurrent segment downloads 
This will signifigantly increase throughput when downloading
large ranges of segments.

The max concurrency is exposed as a cli arg.

We also slightly modify the logged info, so it reports segments downloaded,
not just number of missing segments (which we might skip downloading for various reasons).
 6 years ago
Christopher Usher 37bad7d5ed Also reset database connection on error in the backfiller 6 years ago
Mike Lang 7179fcacec Backfiller: ignore temp segments 
To make this work, we make type a proper segment field.

We also tell get_best_segments to ignore temp segments, since they might go away
before we can actually use them.
 6 years ago
Christopher Usher dd246e1343 ekimekim's suggestions 6 years ago