[pmg-devel] [PATCH pmg-api v3 2/7] add initial SectionConfig for PBS

[Stoiko Ivanov <s.ivanov@proxmox.com>]

add a SectionConfig definition to hold information about PBS-remotes used
for backing up PMG.

Mostly adapted from the PBSPlugin.pm in pve-storage.

This commit needs a versioned dependency on pve-common

Signed-off-by: Stoiko Ivanov <s.ivanov@proxmox.com>
---
 debian/dirs          |   1 +
 src/Makefile         |   1 +
 src/PMG/PBSConfig.pm | 195 +++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 197 insertions(+)
 create mode 100644 src/PMG/PBSConfig.pm

diff --git a/debian/dirs b/debian/dirs
index f7ac2e7..f138bb4 100644
--- a/debian/dirs
+++ b/debian/dirs
@@ -1,4 +1,5 @@
 /etc/pmg
 /etc/pmg/dkim
+/etc/pmg/pbs
 /var/lib/pmg
 /var/lib/pmg/backup
diff --git a/src/Makefile b/src/Makefile
index 05d9598..daa9d46 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -66,6 +66,7 @@ LIBSOURCES =				\
 	PMG/SMTP.pm			\
 	PMG/Unpack.pm			\
 	PMG/Backup.pm			\
+	PMG/PBSConfig.pm		\
 	PMG/RuleCache.pm		\
 	PMG/Statistic.pm		\
 	PMG/UserConfig.pm		\
diff --git a/src/PMG/PBSConfig.pm b/src/PMG/PBSConfig.pm
new file mode 100644
index 0000000..36479ce
--- /dev/null
+++ b/src/PMG/PBSConfig.pm
@@ -0,0 +1,195 @@
+package PMG::PBSConfig;
+
+# section config implementation for PBS integration in PMG
+
+use strict;
+use warnings;
+
+use PVE::Tools qw(extract_param);
+use PVE::SectionConfig;
+use PVE::JSONSchema qw(get_standard_option);
+use PVE::PBSClient;
+
+use base qw(PVE::SectionConfig);
+
+my $inotify_file_id = 'pmg-pbs.conf';
+my $secret_dir = '/etc/pmg/pbs';
+my $config_filename = "${secret_dir}/pbs.conf";
+
+
+my %prune_option = (
+    optional => 1,
+    type => 'integer', minimum => '0',
+    format_description => 'N',
+);
+
+my %prune_properties = (
+    'keep-last' => {
+	%prune_option,
+	description => 'Keep the last <N> backups.',
+    },
+    'keep-hourly' => {
+	%prune_option,
+	description => 'Keep backups for the last <N> different hours. If there is more' .
+		       'than one backup for a single hour, only the latest one is kept.'
+    },
+    'keep-daily' => {
+	%prune_option,
+	description => 'Keep backups for the last <N> different days. If there is more' .
+		       'than one backup for a single day, only the latest one is kept.'
+    },
+    'keep-weekly' => {
+	%prune_option,
+	description => 'Keep backups for the last <N> different weeks. If there is more' .
+		       'than one backup for a single week, only the latest one is kept.'
+    },
+    'keep-monthly' => {
+	%prune_option,
+	description => 'Keep backups for the last <N> different months. If there is more' .
+		       'than one backup for a single month, only the latest one is kept.'
+    },
+    'keep-yearly' => {
+	%prune_option,
+	description => 'Keep backups for the last <N> different years. If there is more' .
+		       'than one backup for a single year, only the latest one is kept.'
+    },
+);
+
+my $defaultData = {
+    propertyList => {
+	type => { description => "Section type." },
+	remote => {
+	    description => "Proxmox Backup Server ID.",
+	    type => 'string', format => 'pve-configid',
+	},
+    },
+};
+
+sub properties {
+    return {
+	datastore => {
+	    description => "Proxmox backup server datastore name.",
+	    type => 'string',
+	},
+	server => {
+	    description => "Proxmox backup server address.",
+	    type => 'string', format => 'address',
+	    maxLength => 256,
+	},
+	disable => {
+	    description => "Flag to disable/deactivate the entry.",
+	    type => 'boolean',
+	    optional => 1,
+	},
+	password => {
+	    description => "Password for the user on the Proxmox backup server.",
+	    type => 'string',
+	    optional => 1,
+	},
+	username => get_standard_option('pmg-email-address', {
+	    description => "Username on the Proxmox backup server"
+	}),
+	fingerprint => get_standard_option('fingerprint-sha256'),
+	%prune_properties,
+    };
+}
+
+sub options {
+    return {
+	server => {},
+	datastore => {},
+	disable => { optional => 1 },
+	username => { optional => 1 },
+	password => { optional => 1 },
+	fingerprint => { optional => 1 },
+	'keep-last' => { optional => 1 },
+	'keep-hourly' =>  { optional => 1 },
+	'keep-daily' => { optional => 1 },
+	'keep-weekly' => { optional => 1 },
+	'keep-monthly' => { optional => 1 },
+	'keep-yearly' => { optional => 1 },
+    };
+}
+
+sub type {
+    return 'pbs';
+}
+
+sub private {
+    return $defaultData;
+}
+
+sub prune_options {
+    my ($self, $remote) = @_;
+
+    my $remote_cfg = $self->{ids}->{$remote};
+
+    my $res = {};
+
+    foreach my $keep_opt (keys %prune_properties) {
+
+	if (defined($remote_cfg->{$keep_opt})) {
+	    $res->{$keep_opt} = $remote_cfg->{$keep_opt};
+	}
+    }
+    return $res;
+}
+
+sub new {
+    my ($type) = @_;
+
+    my $class = ref($type) || $type;
+
+    my $cfg = PVE::INotify::read_file($inotify_file_id);
+
+    $cfg->{secret_dir} = $secret_dir;
+
+    return bless $cfg, $class;
+}
+
+sub write {
+    my ($self) = @_;
+
+    PVE::INotify::write_file($inotify_file_id, $self);
+}
+
+my $lockfile = "/var/lock/pmgpbsconfig.lck";
+
+sub lock_config {
+    my ($code, $errmsg) = @_;
+
+    my $p = PVE::Tools::lock_file($lockfile, undef, $code);
+    if (my $err = $@) {
+	$errmsg ? die "$errmsg: $err" : die $err;
+    }
+}
+
+
+__PACKAGE__->register();
+__PACKAGE__->init();
+
+sub read_pmg_pbs_conf {
+    my ($filename, $fh) = @_;
+
+    local $/ = undef; # slurp mode
+
+    my $raw = defined($fh) ? <$fh> : '';
+
+    return __PACKAGE__->parse_config($filename, $raw);
+}
+
+sub write_pmg_pbs_conf {
+    my ($filename, $fh, $cfg) = @_;
+
+    my $raw = __PACKAGE__->write_config($filename, $cfg);
+
+    PVE::Tools::safe_print($filename, $fh, $raw);
+}
+
+PVE::INotify::register_file($inotify_file_id, $config_filename,
+			    \&read_pmg_pbs_conf,
+			    \&write_pmg_pbs_conf,
+			    undef,
+			    always_call_parser => 1);
+
+1;
-- 
2.20.1