74 lines
1.8 KiB
Nix
74 lines
1.8 KiB
Nix
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{
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# Exposes a `lib` attrset for pure helper values that other outputs can reuse.
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description = "Expose reusable helpers through lib";
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inputs = {
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nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
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};
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outputs =
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{ self, nixpkgs, ... }:
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let
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system = "x86_64-linux";
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pkgs = import nixpkgs { inherit system; };
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playgroundLib = rec {
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rolloutPlan = [
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{
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service = "api";
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wave = 1;
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owner = "team-edge";
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}
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{
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service = "worker";
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wave = 2;
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owner = "team-batch";
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}
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];
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ownerByService = builtins.listToAttrs (
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map (step: {
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name = step.service;
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value = step.owner;
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}) rolloutPlan
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);
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renderStep = step: "wave ${toString step.wave}: ${step.service} owned by ${step.owner}";
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renderPlan = builtins.concatStringsSep "\n" (map renderStep rolloutPlan);
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};
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in
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{
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lib = playgroundLib;
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packages.${system}.default = pkgs.writeShellApplication {
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name = "show-lib-plan";
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text = ''
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cat <<'EOF'
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${self.lib.renderPlan}
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EOF
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'';
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};
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checks.${system}.lib-output =
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pkgs.runCommand "lib-output-check"
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{
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apiOwner = self.lib.ownerByService.api;
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workerLine = self.lib.renderStep (builtins.elemAt self.lib.rolloutPlan 1);
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}
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''
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if [ "$apiOwner" != "team-edge" ]; then
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echo "unexpected api owner: $apiOwner" >&2
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exit 1
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fi
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if [ "$workerLine" != "wave 2: worker owned by team-batch" ]; then
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echo "unexpected worker line: $workerLine" >&2
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exit 1
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fi
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echo ok > "$out"
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'';
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};
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}
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