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Gun Connection Pool: successfully retry after reclaiming the pool

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This commit is contained in:
Mark Felder 2024-06-20 14:03:22 -04:00
commit c765fcbe7e
3 changed files with 22 additions and 12 deletions
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32
lib/pleroma/gun/connection_pool/worker_supervisor.ex
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@ -5,6 +5,9 @@
defmodule Pleroma.Gun.ConnectionPool.WorkerSupervisor do
@moduledoc "Supervisor for pool workers. Does not do anything except enforce max connection limit"
alias Pleroma.Config
alias Pleroma.Gun.ConnectionPool.Worker
use DynamicSupervisor
def start_link(opts) do
@ -14,21 +17,28 @@ defmodule Pleroma.Gun.ConnectionPool.WorkerSupervisor do
def init(_opts) do
DynamicSupervisor.init(
strategy: :one_for_one,
max_children: Pleroma.Config.get([:connections_pool, :max_connections])
max_children: Config.get([:connections_pool, :max_connections])
)
end
def start_worker(opts, last_attempt \\ false) do
case DynamicSupervisor.start_child(__MODULE__, {Pleroma.Gun.ConnectionPool.Worker, opts}) do
{:error, :max_children} ->
funs = [fn -> last_attempt end, fn -> match?(:error, free_pool()) end]
def start_worker(opts, last_attempt \\ false)
if Enum.any?(funs, fn fun -> fun.() end) do
:telemetry.execute([:pleroma, :connection_pool, :provision_failure], %{opts: opts})
{:error, :pool_full}
else
start_worker(opts, true)
end
def start_worker(opts, true) do
case DynamicSupervisor.start_child(__MODULE__, {Worker, opts}) do
{:error, :max_children} ->
:telemetry.execute([:pleroma, :connection_pool, :provision_failure], %{opts: opts})
{:error, :pool_full}
res ->
res
end
end
def start_worker(opts, false) do
case DynamicSupervisor.start_child(__MODULE__, {Worker, opts}) do
{:error, :max_children} ->
spawn(fn -> free_pool() end)
start_worker(opts, true)
res ->
res