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Get current segment number from segment filename when updating HLS storage sequences #134

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Get current segment number from segment filename when updating HLS storage sequences #134

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1ebd0cb
Get current segment number from segment filename
lastcanal Dec 18, 2024
36d73de
remove regex
lastcanal Dec 19, 2024
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28 changes: 17 additions & 11 deletions lib/algora/pipeline/storage.ex
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Original file line number Diff line number Diff line change
Expand Up @@ -87,7 +87,7 @@ defmodule Algora.Pipeline.Storage do

state =
process_contents(parent_id, name, contents, metadata, ctx, state)
|> update_sequence_numbers(sequence_number, manifest_name)
|> update_sequence_numbers(sequence_number, name, manifest_name)
|> add_partial(name, ctx, partial_name, contents, manifest_name)

{:ok, state}
Expand Down Expand Up @@ -257,20 +257,17 @@ defmodule Algora.Pipeline.Storage do
defp update_sequence_numbers(
%{sequences: sequences} = state,
new_partial_sn,
segment_name,
manifest_name
) do
{segment_sn, partial_sn} = Map.get(sequences, manifest_name, {0, 0})
new_segment? = new_partial_sn < partial_sn
sequence = if new_segment? do
{ segment_sn + 1, new_partial_sn }
else
{ segment_sn, new_partial_sn }
end
{segment_sn, _partial_sn} = Map.get(sequences, manifest_name, {0, 0})
new_segment_sn = get_segment_number_from_name(segment_name)
state = sequences
|> Map.put(manifest_name, sequence)
|> Map.put(manifest_name, {new_segment_sn, new_partial_sn})
|> then(&Map.put(state, :sequences, &1))
# If there is a new segment we want to remove partials that are too old from ets
if new_segment? do

# If there is a new segment we want to remove partials that are too old
if new_segment_sn > segment_sn do
remove_partials(state, manifest_name)
else
state
Expand Down Expand Up @@ -381,4 +378,13 @@ defmodule Algora.Pipeline.Storage do
defp process_contents(_parent_id, _name, _contents, _metadata, _ctx, state) do
state
end

# audio_segment_0_audio_master.m4s
defp get_segment_number_from_name(filename) do
filename
|> String.split("_")
|> Enum.drop(2)
|> List.first()
|> String.to_integer()
end
end