115 lines
3.7 KiB
Go
115 lines
3.7 KiB
Go
// GoToSocial
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// Copyright (C) GoToSocial Authors admin@gotosocial.org
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// SPDX-License-Identifier: AGPL-3.0-or-later
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package workers
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import (
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"context"
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"log"
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"runtime"
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"codeberg.org/gruf/go-runners"
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"codeberg.org/gruf/go-sched"
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"github.com/superseriousbusiness/gotosocial/internal/messages"
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)
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type Workers struct {
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// Main task scheduler instance.
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Scheduler sched.Scheduler
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// ClientAPI provides a worker pool that handles both
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// incoming client actions, and our own side-effects.
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ClientAPI runners.WorkerPool
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// Federator provides a worker pool that handles both
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// incoming federated actions, and our own side-effects.
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Federator runners.WorkerPool
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// Enqueue functions for clientAPI / federator worker pools,
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// these are pointers to Processor{}.Enqueue___() msg functions.
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// This prevents dependency cycling as Processor depends on Workers.
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EnqueueClientAPI func(context.Context, ...messages.FromClientAPI)
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EnqueueFediAPI func(context.Context, ...messages.FromFediAPI)
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// Blocking processing functions for clientAPI / federator.
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// These are pointers to Processor{}.Process___() msg functions.
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// This prevents dependency cycling as Processor depends on Workers.
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//
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// Rather than queueing messages for asynchronous processing, these
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// functions will process immediately and in a blocking manner, and
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// will not use up a worker slot.
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//
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// As such, you should only call them in special cases where something
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// synchronous needs to happen before you can do something else.
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ProcessFromClientAPI func(context.Context, messages.FromClientAPI) error
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ProcessFromFediAPI func(context.Context, messages.FromFediAPI) error
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// Media manager worker pools.
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Media runners.WorkerPool
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// prevent pass-by-value.
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_ nocopy
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}
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// Start will start all of the contained worker pools (and global scheduler).
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func (w *Workers) Start() {
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// Get currently set GOMAXPROCS.
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maxprocs := runtime.GOMAXPROCS(0)
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tryUntil("starting scheduler", 5, func() bool {
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return w.Scheduler.Start(nil)
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})
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tryUntil("starting client API workerpool", 5, func() bool {
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return w.ClientAPI.Start(4*maxprocs, 400*maxprocs)
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})
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tryUntil("starting federator workerpool", 5, func() bool {
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return w.Federator.Start(4*maxprocs, 400*maxprocs)
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})
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tryUntil("starting media workerpool", 5, func() bool {
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return w.Media.Start(8*maxprocs, 80*maxprocs)
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})
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}
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// Stop will stop all of the contained worker pools (and global scheduler).
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func (w *Workers) Stop() {
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tryUntil("stopping scheduler", 5, w.Scheduler.Stop)
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tryUntil("stopping client API workerpool", 5, w.ClientAPI.Stop)
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tryUntil("stopping federator workerpool", 5, w.Federator.Stop)
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tryUntil("stopping media workerpool", 5, w.Media.Stop)
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}
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// nocopy when embedded will signal linter to
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// error on pass-by-value of parent struct.
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type nocopy struct{}
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func (*nocopy) Lock() {}
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func (*nocopy) Unlock() {}
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// tryUntil will attempt to call 'do' for 'count' attempts, before panicking with 'msg'.
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func tryUntil(msg string, count int, do func() bool) {
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for i := 0; i < count; i++ {
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if do() {
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return
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}
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}
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log.Panicf("failed %s after %d tries", msg, count)
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}
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