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In #17639 we moved the subscription into NewLogger to ensure we would not race subscribing with shutdown of the eventbus client. Doing so fixed that problem, but exposed another: As we were only servicing events occasionally when waiting for the network to come up, we could leave the eventbus to stall in cases where a number of network deltas arrived later and weren't processed. To address that, let's separate the concerns: As before, we'll Subscribe early to avoid conflicts with shutdown; but instead of using the subscriber directly to determine readiness, we'll keep track of the last-known network state in a selectable condition that the subscriber updates for us. When we want to wait, we'll wait on that condition (or until our context ends), ensuring all the events get processed in a timely manner. Updates #17638 Updates #15160 Change-Id: I28339a372be4ab24be46e2834a218874c33a0d2d Signed-off-by: M. J. Fromberger <fromberger@tailscale.com>
20 lines
788 B
Nix
20 lines
788 B
Nix
# This is a shell.nix file used to describe the environment that
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# tailscale needs for development.
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#
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# For more information about this and why this file is useful, see here:
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# https://nixos.org/guides/nix-pills/developing-with-nix-shell.html
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#
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# Also look into direnv: https://direnv.net/, this can make it so that you can
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# automatically get your environment set up when you change folders into the
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# project.
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(import (
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let
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lock = builtins.fromJSON (builtins.readFile ./flake.lock);
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in fetchTarball {
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url = "https://github.com/edolstra/flake-compat/archive/${lock.nodes.flake-compat.locked.rev}.tar.gz";
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sha256 = lock.nodes.flake-compat.locked.narHash; }
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) {
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src = ./.;
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}).shellNix
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# nix-direnv cache busting line: sha256-pZCy1KHUe7f7cjm816OwA+bjGrSRnSTxkvCmB4cmWqw=
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