forked from mirrors/nixpkgs
Merge pull request #35129 from rvl/buildkite-agent-hooks
buildkite-agent service: declarative hooks and extraConfig option
This commit is contained in:
zimbatm
GitHub
commit
3b30e4355b
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@ -4,6 +4,31 @@ with lib;
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let
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cfg = config.services.buildkite-agent;
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mkHookOption = { name, description, example ? null }: {
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inherit name;
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value = mkOption {
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default = null;
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inherit description;
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type = types.nullOr types.lines;
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} // (if example == null then {} else { inherit example; });
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};
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mkHookOptions = hooks: listToAttrs (map mkHookOption hooks);
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hooksDir = let
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mkHookEntry = name: value: ''
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cat > $out/${name} <<EOF
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#! ${pkgs.stdenv.shell}
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set -e
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${value}
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EOF
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chmod 755 $out/${name}
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'';
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in pkgs.runCommand "buildkite-agent-hooks" {} ''
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mkdir $out
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${concatStringsSep "\n" (mapAttrsToList mkHookEntry (filterAttrs (n: v: v != null) cfg.hooks))}
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'';
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in
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{
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@ -43,25 +68,28 @@ in
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name = mkOption {
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type = types.str;
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default = "%hostname-%n";
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description = ''
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The name of the agent.
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'';
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};
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hooksPath = mkOption {
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type = types.path;
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default = "${pkgs.buildkite-agent}/share/hooks";
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defaultText = "${pkgs.buildkite-agent}/share/hooks";
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description = ''
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Path to the directory storing the hooks.
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'';
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};
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meta-data = mkOption {
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type = types.str;
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default = "";
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example = "queue=default,docker=true,ruby2=true";
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description = ''
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Meta data for the agent.
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Meta data for the agent. This is a comma-separated list of
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<code>key=value</code> pairs.
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'';
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};
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extraConfig = mkOption {
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type = types.lines;
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default = "";
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example = "debug=true";
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description = ''
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Extra lines to be added verbatim to the configuration file.
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'';
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};
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@ -85,6 +113,74 @@ in
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'';
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};
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};
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hooks = mkHookOptions [
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{ name = "checkout";
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description = ''
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The `checkout` hook script will replace the default checkout routine of the
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bootstrap.sh script. You can use this hook to do your own SCM checkout
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behaviour
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''; }
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{ name = "command";
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description = ''
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The `command` hook script will replace the default implementation of running
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the build command.
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''; }
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{ name = "environment";
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description = ''
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The `environment` hook will run before all other commands, and can be used
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to set up secrets, data, etc. Anything exported in hooks will be available
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to the build script.
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Note: the contents of this file will be copied to the world-readable
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Nix store.
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'';
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example = ''
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export SECRET_VAR=`head -1 /run/keys/secret`
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''; }
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{ name = "post-artifact";
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description = ''
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The `post-artifact` hook will run just after artifacts are uploaded
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''; }
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{ name = "post-checkout";
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description = ''
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The `post-checkout` hook will run after the bootstrap script has checked out
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your projects source code.
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''; }
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{ name = "post-command";
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description = ''
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The `post-command` hook will run after the bootstrap script has run your
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build commands
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''; }
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{ name = "pre-artifact";
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description = ''
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The `pre-artifact` hook will run just before artifacts are uploaded
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''; }
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{ name = "pre-checkout";
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description = ''
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The `pre-checkout` hook will run just before your projects source code is
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checked out from your SCM provider
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''; }
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{ name = "pre-command";
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description = ''
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The `pre-command` hook will run just before your build command runs
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''; }
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{ name = "pre-exit";
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description = ''
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The `pre-exit` hook will run just before your build job finishes
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''; }
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];
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hooksPath = mkOption {
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type = types.path;
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default = hooksDir;
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defaultText = "generated from services.buildkite-agent.hooks";
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description = ''
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Path to the directory storing the hooks.
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Consider using <option>services.buildkite-agent.hooks.<name></option>
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instead.
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'';
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};
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};
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};
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@ -100,13 +196,10 @@ in
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environment.systemPackages = [ cfg.package ];
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systemd.services.buildkite-agent =
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let copy = x: target: perms:
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"cp -f ${x} ${target}; ${pkgs.coreutils}/bin/chmod ${toString perms} ${target}; ";
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in
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{ description = "Buildkite Agent";
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wantedBy = [ "multi-user.target" ];
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after = [ "network.target" ];
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path = cfg.runtimePackages;
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path = cfg.runtimePackages ++ [ pkgs.coreutils ];
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environment = config.networking.proxy.envVars // {
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HOME = cfg.dataDir;
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NIX_REMOTE = "daemon";
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@ -114,10 +207,14 @@ in
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## NB: maximum care is taken so that secrets (ssh keys and the CI token)
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## don't end up in the Nix store.
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preStart = ''
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${pkgs.coreutils}/bin/mkdir -m 0700 -p ${cfg.dataDir}/.ssh
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${copy (toString cfg.openssh.privateKeyPath) "${cfg.dataDir}/.ssh/id_rsa" 600}
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${copy (toString cfg.openssh.publicKeyPath) "${cfg.dataDir}/.ssh/id_rsa.pub" 600}
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preStart = let
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sshDir = "${cfg.dataDir}/.ssh";
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in
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''
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mkdir -m 0700 -p "${sshDir}"
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cp -f "${toString cfg.openssh.privateKeyPath}" "${sshDir}/id_rsa"
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cp -f "${toString cfg.openssh.publicKeyPath}" "${sshDir}/id_rsa.pub"
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chmod 600 "${sshDir}"/id_rsa*
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cat > "${cfg.dataDir}/buildkite-agent.cfg" <<EOF
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token="$(cat ${toString cfg.tokenPath})"
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@ -125,7 +222,7 @@ in
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meta-data="${cfg.meta-data}"
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build-path="${cfg.dataDir}/builds"
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hooks-path="${cfg.hooksPath}"
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bootstrap-script="${pkgs.buildkite-agent}/share/bootstrap.sh"
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${cfg.extraConfig}
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EOF
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'';
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@ -137,6 +234,15 @@ in
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TimeoutSec = 10;
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};
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};
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assertions = [
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{ assertion = cfg.hooksPath == hooksDir || all isNull (attrValues cfg.hooks);
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message = ''
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Options `services.buildkite-agent.hooksPath' and
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`services.buildkite-agent.hooks.<name>' are mutually exclusive.
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'';
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}
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];
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};
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imports = [
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(mkRenamedOptionModule [ "services" "buildkite-agent" "token" ] [ "services" "buildkite-agent" "tokenPath" ])
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