cosmic checkpoint
This commit is contained in:
atagen
parent
4031a614a8
commit
f623faa0ef
26 changed files with 1163 additions and 538 deletions
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@ -7,32 +7,84 @@
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inherit (lib) mkOption;
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inherit (lib.attrsets) mapAttrs mapAttrs' nameValuePair;
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inherit (lib) getExe getExe';
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# make a firefox webapp entry for the client app
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# make a firefox webapp + hidden .desktop entry for the client app
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make-firefox = cfg:
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mapAttrs' (
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name: cfg:
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nameValuePair "${name}-client"
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{
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inherit (cfg) name id;
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inherit (cfg) name;
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url = "http://127.0.0.1:${builtins.toString cfg.port}";
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extraSettings = config.programs.firefox.profiles.default.settings;
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hidden = true;
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}
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)
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cfg;
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# make a systemd service for running the backend
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make-systemd = cfg:
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# make a systemd service for running the frontend
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make-systemd-service = cfg:
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mapAttrs' (
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name: cfg:
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if
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(cfg.service
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!= null)
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then
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nameValuePair "${cfg.name}-frontend" {
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Unit = {
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Description = "${cfg.name} Frontend";
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WantedBy = lib.mkForce [];
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};
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Service = cfg.service;
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}
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else nameValuePair "" {}
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)
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cfg;
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# modify systemd units to be PartOf this target
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modify-systemd-services = cfg:
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lib.listToAttrs (lib.flatten (lib.mapAttrsToList (
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name: cfg: (map (
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req: {
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name = "${req}";
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value = {
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Unit = {
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PartOf = "${lib.toLower cfg.name}.target";
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};
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};
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}
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)
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cfg.requires.services)
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)
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cfg));
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modify-quadlets = cfg:
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lib.listToAttrs (lib.flatten (lib.mapAttrsToList (
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name: cfg: (map (
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req: {
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name = "${req}";
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value = {
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unitConfig = {
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PartOf = "${lib.toLower cfg.name}.target";
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};
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};
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}
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)
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cfg.requires.containers)
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)
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cfg));
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# make a systemd target to collate dependencies
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make-systemd-target = cfg:
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mapAttrs (
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name: cfg: {
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Unit = {
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Description = "${cfg.name} Backend";
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Description = "${cfg.name} Target";
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WantedBy = lib.mkForce [];
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Requires =
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(map (req: req + ".service") cfg.requires.services)
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++ (map (req: "podman-" + req + ".service") cfg.requires.containers);
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};
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Service = cfg.service;
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}
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)
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cfg;
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# make desktop shortcuts and a script which will handle starting both the above
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# make desktop shortcuts and a script which will handle starting everything
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make-xdg = cfg:
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mapAttrs (
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name: cfg: {
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@ -42,45 +94,72 @@
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notify-send = "${getExe' pkgs.libnotify "notify-send"} -a \"${cfg.name}\"";
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systemctl = "${getExe' pkgs.systemd "systemctl"}";
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dex = "${getExe pkgs.dex}";
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curl = "${getExe pkgs.curl}";
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podman = "${getExe pkgs.podman}";
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makeContainerCheck = container: ''[ "$(${podman} inspect -f {{.State.Health.Status}} ${container})" == "healthy" ]'';
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# makeContainerCheck = container: ''
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# [ ${podman} inspect -f {{.State.Status}} ${container})" != "running" ]
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# '';
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containerChecks =
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if (cfg.requires.containers != [])
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then
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''
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container_checks() {
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if ''
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+ (lib.concatMapStringsSep " && "
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(container: makeContainerCheck container)
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cfg.requires.containers)
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+ ''
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; then
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return 0
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else
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return 1
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fi
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}
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''
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else ''
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container_checks() {
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return 0
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}
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'';
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in
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pkgs.writeShellScript "${name}"
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''
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set -euo pipefail
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${notify-send} "Launching backend.." "Please be patient."
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${systemctl} --user start ${name}
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attempts=0
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success=false
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while [[ $attempts -lt $((20*9)) ]]; do
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if [[ $(${curl} -sf http://127.0.0.1:${builtins.toString cfg.port} --output /dev/null; printf $?) -eq 0 ]]; then
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${notify-send} "Backend up." "Launching client.."
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success=true
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break
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else
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attempts=$((attempts+1))
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if [[ $(($attempts % 20)) -eq 0 ]]; then
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${notify-send} "Launching backend.." "Still launching.. ($((attempts/2))s)"
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fi
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exit_error() {
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${notify-send} -w "Failure" $1
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exit 1
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}
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${containerChecks}
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${notify-send} "Launching ${name} backend.." "Please be patient."
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${systemctl} --user start ${name}.target || exit_error "Failed to launch!"
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checks=0
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until container_checks; do
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sleep 2
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checks=$((checks+1))
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if [ $((checks%10)) -eq 0 ]; then
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${notify-send} "Waiting for backend."
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fi
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if [ $checks -ge 60 ]; then
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${systemctl} --no-block --user stop ${name}.target
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exit_error "Failed to launch!"
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fi
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sleep 0.5
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done
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if [[ ! $success ]]; then
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${notify-send} "Failure" "Failed to launch backend!"
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${systemctl} --user kill ${name}
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exit 1
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fi
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${notify-send} "Launching ${name}.."
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${dex} -w ~/.nix-profile/share/applications/${name}-client.desktop
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${notify-send} "Goodbye" "Shutting down."
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${systemctl} --user stop ${name}
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${systemctl} --user stop ${name}.target
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exit 0
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''}";
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}
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)
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cfg;
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cfg = config.localWebApps;
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in {
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options.localWebApps = mkOption {
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default = {};
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@ -104,29 +183,59 @@ in {
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default = null;
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};
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id = mkOption {
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type = int;
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description = "Firefox profile ID for the webapp's client";
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requires = mkOption {
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type = nullOr (submodule {
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options = {
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containers = mkOption {
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type = listOf str;
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default = [];
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};
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services = mkOption {
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type = listOf str;
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default = [];
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};
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};
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});
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default = null;
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description = "Containers or services this app requires.";
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};
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service = mkOption {
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type = nullOr (submodule {
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options = {
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execStartPre = mkOption {
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type = nullOr str;
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default = null;
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};
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execStart = mkOption {
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type = nullOr str;
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default = null;
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};
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execStop = mkOption {
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type = nullOr str;
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default = null;
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};
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};
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});
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default = null;
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description = "Submodule containing exec[StartPre/Start/Stop] commands for any required systemd service";
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};
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port = mkOption {
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type = int;
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description = "Local port the webapp should host on.";
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};
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service = mkOption {
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type = attrsOf str;
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description = "The service settings for systemd user service. Requires at least ExecStart.";
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};
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};
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});
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};
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config = {
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programs.firefox.webapps = make-firefox config.localWebApps;
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programs.firefox.webapps = make-firefox cfg;
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systemd.user.services = make-systemd config.localWebApps;
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systemd.user.targets = make-systemd-target cfg;
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systemd.user.services = (make-systemd-service cfg) // (modify-systemd-services cfg);
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services.podman.containers = modify-quadlets cfg;
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xdg.desktopEntries = make-xdg config.localWebApps;
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xdg.desktopEntries = make-xdg cfg;
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};
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}
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