69af86050f
git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@169 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd
465 lines
9.5 KiB
Perl
465 lines
9.5 KiB
Perl
#!/usr/bin/perl
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# IBM(c) 2007 EPL license http://www.eclipse.org/legal/epl-v10.html
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package DSH;
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use base xCAT::DSHContext;
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use xCAT::MsgUtils;
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use File::Path;
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# Configure Node group path from environment
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our $nodegroup_path = $ENV{'DSH_NODEGROUP_PATH'};
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=head3
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context_defaults
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Assign default properties for the DSH context. A default
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property for a context will be used if the property is
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not user configured in any other way.
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Arguments:
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None
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Returns:
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A reference to a hash table with the configured
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default properties for the DSH context
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Globals:
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None
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Error:
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None
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Example:
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$default_properties = DSH->config_defaults;
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Comments:
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$defaults hash table contents:
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$defaults{'NodeRemoteShell'} - default remote shell to use for node targets
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=cut
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sub context_defaults {
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my %defaults = ();
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if ( $ENV{'DSH_NODE_RSH'} ) {
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my @remoteshell_list = split ',', $ENV{'DSH_NODE_RSH'};
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foreach $context_remoteshell (@remoteshell_list) {
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my ( $context, $remoteshell ) = split ':', $context_remoteshell;
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if ( !$remoteshell ) {
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$remoteshell = $context;
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!$defaults{'NodeRemoteShell'}
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&& ( $defaults{'NodeRemoteShell'} = $remoteshell );
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}
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elsif ( $context eq 'DSH' ) {
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$defaults{'NodeRemoteShell'} = $remoteshell;
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}
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}
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}
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if ( !$defaults{'NodeRemoteShell'} ) {
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my $dsh_context_defaults = xCAT::DSHContext->context_defaults;
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$defaults{'NodeRemoteShell'} =
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$$dsh_context_defaults{'NodeRemoteShell'};
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}
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return \%defaults;
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}
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=head3
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context_properties
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Configure the user specified context properties for the DSH context.
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These properties are configured by the user through environment
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variables or external configuration files.
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Arguments:
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None
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Returns:
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A reference to a hash table of user-configured properties for
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the DSH context.
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Globals:
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None
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Error:
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None
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Example:
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$properties = DSH->config_properties
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Comments:
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=cut
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sub context_properties {
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my %properties = ();
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$properties{'DCP_DEVICE_OPTS'} = $ENV{'DCP_DEVICE_OPTS'};
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$properties{'DCP_DEVICE_RCP'} = $ENV{'DCP_DEVICE_RCP'}
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|| $ENV{'DCP_DEVICE_COPY_CMD'};
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$properties{'DCP_NODE_OPTS'} = $ENV{'DCP_NODE_OPTS'};
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$properties{'DCP_NODE_RCP'} = $ENV{'DCP_NODE_RCP'} || $ENV{'DCP_COPY_CMD'};
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$properties{'DSH_CONTEXT'} = $ENV{'DSH_CONTEXT'};
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$properties{'DSH_DEVICE_LIST'} = $ENV{'DSH_DEVICE_LIST'};
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$properties{'DSH_DEVICE_OPTS'} = $ENV{'DSH_DEVICE_OPTS'}
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|| $ENV{'DSH_DEVICE_REMOTE_OPTS'};
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$properties{'DSH_DEVICE_RCP'} = $ENV{'DSH_DEVICE_RCP'};
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$properties{'DSH_DEVICE_RSH'} = $ENV{'DSH_DEVICE_RSH'}
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|| $ENV{'DSH_DEVICE_REMOTE_CMD'};
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$properties{'DSH_ENVIRONMENT'} = $ENV{'DSH_ENVIRONMENT'};
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$properties{'DSH_FANOUT'} = $ENV{'DSH_FANOUT'};
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$properties{'DSH_LOG'} = $ENV{'DSH_LOG'};
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$properties{'DSH_NODEGROUP_PATH'} = $ENV{'DSH_NODEGROUP_PATH'};
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$properties{'DSH_NODE_LIST'} = $ENV{'DSH_NODE_LIST'}
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|| $ENV{'DSH_LIST'}
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|| $ENV{'WCOLL'};
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$properties{'DSH_NODE_OPTS'} = $ENV{'DSH_NODE_OPTS'}
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|| $ENV{'DSH_REMOTE_OPTS'};
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$properties{'DSH_NODE_RCP'} = $ENV{'DSH_NODE_RCP'};
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$properties{'DSH_NODE_RSH'} = $ENV{'DSH_NODE_RSH'}
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|| $ENV{'DSH_REMOTE_SHELL'}
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|| $ENV{'DSH_REMOTE_CMD'};
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$properties{'DSH_OUTPUT'} = $ENV{'DSH_OUTPUT'};
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$properties{'DSH_PATH'} = $ENV{'DSH_PATH'};
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$properties{'DSH_REPORT'} = $ENV{'DSH_REPORT'}
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|| $ENV{'DSH_REPORTS_DIRECTORY'};
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$properties{'DSH_SYNTAX'} = $ENV{'DSH_SYNTAX'};
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$properties{'DSH_TIMEOUT'} = $ENV{'DSH_TIMEOUT'};
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$properties{'RSYNC_RSH'} = $ENV{'RSYNC_RSH'};
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if($ENV{'DSH_ON_HMC'}){
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$properties{'DSH_NODE_RCP'} = '/usr/hmcrbin/scp';
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$properties{'DSH_NODE_RSH'} = '/usr/hmcrbin/ssh';
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}
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return \%properties;
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}
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=head3
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all_nodegroups
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Returns an array of all node group names in the DSH context
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Arguments:
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None
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Returns:
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An array of node group names
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Globals:
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$nodegroup_path
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Error:
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None
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Example:
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@nodegroups = DSH->all_nodegroups;
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Comments:
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=cut
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sub all_nodegroups {
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my @nodegroups = ();
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if ($nodegroup_path) {
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opendir( DIR, $nodegroup_path );
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while ( my $nodegroup = readdir(DIR) ) {
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( $nodegroup !~ /^\./ ) && push @nodegroups, $nodegroup;
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}
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closedir DIR;
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}
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return @nodegroups;
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}
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=head3
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nodegroup_members
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Given a node group in the DSH context, this routine expands the
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membership of the node group and returns a list of its members.
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Arguments:
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$nodegroup - node group name
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Returns:
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An array of node group members
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Globals:
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$nodegroup_path
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Error:
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None
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Example:
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$members = DSH->nodegroup_members('MyGroup1');
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Comments:
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=cut
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sub nodegroup_members {
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my ( $class, $nodegroup ) = @_;
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my %resolved_nodes = ();
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my %unresolved_nodes = ();
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my $nodes = DSH->read_target_file("$nodegroup_path/$nodegroup");
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!$nodes && return undef;
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my @members = ();
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foreach $node (@$nodes) {
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if ( $node =~ /@/ ) {
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xCAT::MsgUtils->message("E",
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"$node is not a valid name for group $nodegroup");
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}
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else {
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push @members, $node;
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}
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}
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DSHContext->resolve_hostnames( \%resolved_nodes, \%unresolved_nodes,
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@members );
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@members = keys(%resolved_nodes);
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return \@members;
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}
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=head3
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all_nodes
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Returns an array of all node names in the DSH context
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Arguments:
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None
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Returns:
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An array of node names
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Globals:
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$nodegroup_path
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Error:
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None
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Example:
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@nodes = DSH->all_nodes;
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Comments:
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=cut
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sub all_nodes {
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my $build_cache = undef;
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if ( -e "$ENV{'HOME'}/.dsh/$nodegroup_path/AllNodes" ) {
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my @stat_path = stat $nodegroup_path;
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my @stat_allnodes =
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stat "$ENV{'HOME'}/.dsh/$nodegroup_path/AllNodes.dsh";
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if ( $stat_path[9] > $stat_allnodes[9] ) {
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$build_cache = 1;
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}
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else {
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if ($nodegroup_path) {
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opendir( DIR, $nodegroup_path );
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while ( my $nodegroup = readdir(DIR) ) {
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if ( $nodegroup !~ /^\./ ) {
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my @stat_file = stat $nodegroup;
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( $stat_file[9] > $stat_allnodes[9] )
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&& ( $build_cache = 1 );
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}
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last if $build_cache;
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}
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closedir DIR;
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}
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}
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}
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else {
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$build_cache = 1;
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}
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if ($build_cache) {
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my @nodegroups = DSH->all_nodegroups;
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my @nodes = ();
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foreach $nodegroup (@nodegroups) {
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push @nodes, @{ DSH->nodegroup_members($nodegroup) };
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}
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if ( !( -d "$ENV{'HOME'}/.dsh/$nodegroup_path" ) ) {
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eval { mkpath( "$ENV{'HOME'}/.dsh/$nodegroup_path") };
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if ($@) {
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xCAT::MsgUtils->message(
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"E",
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" Cannot make directory: $ENV{'HOME'}/.dsh/$nodegroup_path\n");
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return undef;
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}
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}
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DSH->write_target_file( "$ENV{'HOME'}/.dsh/$nodegroup_path/AllNodes",
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@nodes );
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return @nodes;
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}
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else {
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my $nodes =
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DSH->read_target_file("$ENV{'HOME'}/.dsh/$nodegroup_path/AllNodes");
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return @$nodes;
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}
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}
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=head3
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read_target_file
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Processes the given filename and stores all targets in the file in an
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array
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Arguments:
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$filename - file to read target names from
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Returns:
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A reference to an array of target names
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Globals:
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None
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Error:
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None
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Example:
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DSH->read_target_file('/tmp/target_file');
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Comments:
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=cut
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sub read_target_file {
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my ( $class, $filename ) = @_;
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my %targets = ();
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if ( open( FILE, $filename ) ) {
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while ( my $target = <FILE> ) {
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$target =~ /^\s*#/ && next;
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$target =~ /^\s*$/ && next;
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$target =~ /;/ && next;
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$target =~ /\S+\s+\S+/ && next;
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$target =~ s/\s+$//;
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chomp($target);
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$targets{$target}++;
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}
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close FILE;
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my @target_list = keys(%targets);
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return \@target_list;
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}
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else {
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xCAT::MsgUtils->message( "E", "Cannot open file: $filename\n");
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return undef;
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}
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}
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=head3
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write_target_file
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Writes a list of supplied targets to a specified file. Each target name
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is written to one line
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Arguments:
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$filename - file to write target names
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@targets - array of target names to write
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Returns:
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None
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Globals:
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None
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Error:
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None
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Example:
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DSH->read_target_file('/tmp/target_file');
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Comments:
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=cut
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sub write_target_file {
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my ( $class, $filename, @targets ) = @_;
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if ( open( FILE, ">$filename" ) ) {
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print FILE "#\n";
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print FILE "# DSH Utilities Target File\n";
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print FILE "#\n";
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foreach $target (@targets) {
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print FILE "$target\n";
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}
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close FILE;
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}
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else {
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xCAT::MsgUtils->message("E", "Error writing file $filename");
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}
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}
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sub query_node {
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my ( $class, $node ) = @_;
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my $res = 0;
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$~ = "NODES";
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NetworkUtils->tryHost( $node, \$res );
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if ($res) {
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print("$node : Valid\n");
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}
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else {
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print("$node : Invalid\n");
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}
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format NODES =
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@<<<<<<<<<<<<<<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<<<
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$node, $status
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.
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}
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sub query_group {
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my ( $class, $group ) = @_;
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my @dsh_groups = all_nodegroups();
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$~ = "GROUPS";
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if ( grep( /^$group$/, @dsh_groups ) ) {
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print("$group : Valid\n");
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}
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else {
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print("$group : Invalid\n");
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}
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}
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1; #end
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