forked from mirrors/gotosocial
c9d893fec1
* [feature/performance] Fail fast when doing remote transport calls inside incoming request contexts * [chore] Reduce outgoing request timeout to 15s * log error messages when fastfailing * use context.Value() instead of wrapped context, wrap error with fastfail instead of extra log entry * add fast-fail context key test Signed-off-by: kim <grufwub@gmail.com> Co-authored-by: kim <grufwub@gmail.com>
43 lines
1.7 KiB
Go
43 lines
1.7 KiB
Go
/*
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GoToSocial
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Copyright (C) 2021-2022 GoToSocial Authors admin@gotosocial.org
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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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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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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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*/
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package transport
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import "context"
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// ctxkey is our own unique context key type to prevent setting outside package.
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type ctxkey string
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// fastfailkey is our unique context key to indicate fast-fail is enabled.
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var fastfailkey = ctxkey("ff")
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// WithFastfail returns a Context which indicates that any http requests made
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// with it should return after the first failed attempt, instead of retrying.
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//
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// This can be used to fail quickly when you're making an outgoing http request
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// inside the context of an incoming http request, and you want to be able to
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// provide a snappy response to the user, instead of retrying + backing off.
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func WithFastfail(parent context.Context) context.Context {
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return context.WithValue(parent, fastfailkey, struct{}{})
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}
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// IsFastfail returns true if the given context was created by WithFastfail.
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func IsFastfail(ctx context.Context) bool {
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_, ok := ctx.Value(fastfailkey).(struct{})
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return ok
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}
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