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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.
105 lines
3.0 KiB
Nix
105 lines
3.0 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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inherit (pkgs) sitecopy;
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stateDir = "/var/spool/sitecopy";
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sitecopyCron = backup : ''
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${if backup ? period then backup.period else config.services.sitecopy.period} root ${sitecopy}/bin/sitecopy --storepath=${stateDir} --rcfile=${stateDir}/${backup.name}.conf --update ${backup.name} >> /var/log/sitecopy.log 2>&1
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'';
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in
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{
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options = {
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services.sitecopy = {
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enable = mkOption {
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default = false;
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description = ''
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Whether to enable sitecopy backups of specified directories.
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'';
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};
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period = mkOption {
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default = "15 04 * * *";
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description = ''
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This option defines (in the format used by cron) when the
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sitecopy backup are being run.
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The default is to update at 04:15 (at night) every day.
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'';
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};
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backups = mkOption {
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example = [
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{ name = "test";
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local = "/tmp/backup";
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remote = "/staff-groups/ewi/st/strategoxt/backup/test";
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server = "webdata.tudelft.nl";
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protocol = "webdav";
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https = true ;
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symlinks = "maintain" ;
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}
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];
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default = [];
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description = ''
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List of attributesets describing the backups.
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Username/password are extracted from <filename>${stateDir}/sitecopy.secrets</filename> at activation
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time. The secrets file lines should have the following structure:
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<screen>
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server username password
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</screen>
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'';
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};
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};
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};
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config = mkIf config.services.sitecopy.enable {
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environment.systemPackages = [ sitecopy ];
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services.cron.systemCronJobs = map sitecopyCron config.services.sitecopy.backups;
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system.activationScripts.sitecopyBackup = stringAfter [ "stdio" "users" ]
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''
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mkdir -m 0700 -p ${stateDir}
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chown root ${stateDir}
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touch ${stateDir}/sitecopy.secrets
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chown root ${stateDir}/sitecopy.secrets
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${pkgs.lib.concatStrings (map ( b: ''
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unset secrets
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unset secret
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secrets=`grep '^${b.server}' ${stateDir}/sitecopy.secrets | head -1`
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secret=($secrets)
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cat > ${stateDir}/${b.name}.conf << EOF
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site ${b.name}
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server ${b.server}
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protocol ${b.protocol}
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username ''${secret[1]}
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password ''${secret[2]}
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local ${b.local}
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remote ${b.remote}
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symlinks ${b.symlinks}
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${if b.https then "http secure" else ""}
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EOF
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chmod 0600 ${stateDir}/${b.name}.conf
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if ! test -e ${stateDir}/${b.name} ; then
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echo " * Initializing sitecopy '${b.name}'"
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${sitecopy}/bin/sitecopy --storepath=${stateDir} --rcfile=${stateDir}/${b.name}.conf --initialize ${b.name}
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else
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echo " * Sitecopy '${b.name}' already initialized"
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fi
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'' ) config.services.sitecopy.backups
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)}
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'';
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};
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}
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