[pve-devel] [PATCH cluster v2] add get_local_migration_ip method

[Thomas Lamprecht]

used to get the local IP from the datacenter migration->network
CIDR, if any.

Signed-off-by: Thomas Lamprecht <t.lamprecht at proxmox.com>
---
 data/PVE/Cluster.pm | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/data/PVE/Cluster.pm b/data/PVE/Cluster.pm
index 893dbe0..c69f339 100644
--- a/data/PVE/Cluster.pm
+++ b/data/PVE/Cluster.pm
@@ -16,6 +16,7 @@ use PVE::INotify;
 use PVE::IPCC;
 use PVE::SafeSyslog;
 use PVE::JSONSchema;
+use PVE::Network;
 use JSON;
 use RRDs;
 use Encode;
@@ -1048,6 +1049,34 @@ sub remote_node_ip {
     return wantarray ? ($ip, $family) : $ip;
 }
 
+sub get_local_migration_ip {
+    my ($migration_network, $noerr) = @_;
+
+    my $ip;
+    my $cidr = $migration_network;
+
+    if (!defined($cidr)) {
+	my $dc_conf = cfs_read_file('datacenter.cfg');
+	$cidr = $dc_conf->{migration}->{network}
+	  if defined($dc_conf->{migration}->{network});
+    }
+
+    if (defined($cidr)) {
+	my $ips = PVE::Network::get_local_ip_from_cidr($cidr);
+
+	die "no IP address configured on local node for the '$cidr' " .
+	  " sub network\n" if !$noerr && (scalar(@$ips) == 0);
+
+	warn "multiple IP address configured for the '$cidr' sub network," .
+	  "selecting the first found!\n" if !$noerr && (scalar(@$ips) > 1);
+
+	$ip = @$ips[0];
+	$ip = "[$ip]" if $ip && Net::IP::ip_is_ipv6($ip);
+    }
+
+    return $ip;
+};
+
 # ssh related utility functions
 
 sub ssh_merge_keys {
-- 
2.1.4