29027fd1e1
Using pkgs.lib on the spine of module evaluation is problematic because the pkgs argument depends on the result of module evaluation. To prevent an infinite recursion, pkgs and some of the modules are evaluated twice, which is inefficient. Using ‘with lib’ prevents this problem.
110 lines
2 KiB
Nix
110 lines
2 KiB
Nix
# Felix server
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{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.felix;
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in
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{
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###### interface
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options = {
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services.felix = {
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enable = mkOption {
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default = false;
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description = "Whether to enable the Apache Felix OSGi service";
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};
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bundles = mkOption {
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default = [ pkgs.felix_remoteshell ];
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description = "List of bundles that should be activated on startup";
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};
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user = mkOption {
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default = "osgi";
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description = "User account under which Apache Felix runs.";
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};
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group = mkOption {
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default = "osgi";
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description = "Group account under which Apache Felix runs.";
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};
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};
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};
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###### implementation
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config = mkIf cfg.enable {
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users.extraGroups = singleton
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{ name = "osgi";
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gid = config.ids.gids.osgi;
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};
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users.extraUsers = singleton
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{ name = "osgi";
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uid = config.ids.uids.osgi;
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description = "OSGi user";
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home = "/homeless-shelter";
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};
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jobs.felix =
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{ description = "Felix server";
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preStart =
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''
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# Initialise felix instance on first startup
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if [ ! -d /var/felix ]
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then
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# Symlink system files
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mkdir -p /var/felix
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chown ${cfg.user}:${cfg.group} /var/felix
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for i in ${pkgs.felix}/*
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do
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if [ "$i" != "${pkgs.felix}/bundle" ]
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then
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ln -sfn $i /var/felix/$(basename $i)
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fi
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done
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# Symlink bundles
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mkdir -p /var/felix/bundle
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chown ${cfg.user}:${cfg.group} /var/felix/bundle
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for i in ${pkgs.felix}/bundle/* ${toString cfg.bundles}
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do
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if [ -f $i ]
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then
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ln -sfn $i /var/felix/bundle/$(basename $i)
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elif [ -d $i ]
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then
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for j in $i/bundle/*
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do
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ln -sfn $j /var/felix/bundle/$(basename $j)
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done
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fi
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done
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fi
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'';
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script =
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''
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cd /var/felix
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${pkgs.su}/bin/su -s ${pkgs.bash}/bin/sh ${cfg.user} -c '${pkgs.jre}/bin/java -jar bin/felix.jar'
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'';
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};
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};
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}
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