Graham McIntire
14d3e6ae5b
Prep for Stream A of Phase 3 rust migration: f00's native-duct merge, NEXRAD, and commercial-link enrichment move to Rust via the same grid_tasks work queue. kind='analysis' (single row per run) vs kind='forecast' (18 rows per run) lets one Rust worker dispatch on payload type without a second table. Forecast default keeps existing Rust claim_next behaviour unchanged during cutover.
24 lines
1.1 KiB
Elixir
24 lines
1.1 KiB
Elixir
defmodule Microwaveprop.Repo.Migrations.AddKindToGridTasks do
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use Ecto.Migration
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# `kind` splits the queue between forecast-hour work (the 18 f01..f18 rows
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# Rust has owned since Phase 2) and analysis-hour work (f00, which Elixir
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# still runs because it carries the native-level duct merge, NEXRAD, and
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# commercial-link enrichment). Stream A of the Phase 3 migration plan
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# ports those enrichments to Rust and flips f00 onto this queue too.
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# Forecast rows default to 'forecast' so existing producers keep working
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# during the transition.
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def change do
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alter table(:grid_tasks) do
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add :kind, :string, null: false, default: "forecast"
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end
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create index(:grid_tasks, [:status, :kind])
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# Replace (run_time, forecast_hour) uniqueness with a three-column key so
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# an analysis row and a forecast row for f00 can coexist during the
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# cutover. Post-cutover the analysis row replaces f00 outright.
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drop_if_exists unique_index(:grid_tasks, [:run_time, :forecast_hour])
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create unique_index(:grid_tasks, [:run_time, :forecast_hour, :kind])
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end
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end
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