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-rwxr-xr-xsrc/pmns/Rebuild395
1 files changed, 395 insertions, 0 deletions
diff --git a/src/pmns/Rebuild b/src/pmns/Rebuild
new file mode 100755
index 0000000..1d69e04
--- /dev/null
+++ b/src/pmns/Rebuild
@@ -0,0 +1,395 @@
+#!/bin/sh
+#
+# Copyright (c) 2000-2001,2003 Silicon Graphics, Inc. All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation; either version 2 of the License, or (at your
+# option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+# for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+#
+# Rebuild the PMNS, handling assorted errors
+#
+
+# Note. has to be run from where the PMNS files are installed as local
+# file names (not full paths) are used
+#
+
+# source the PCP configuration environment variables
+. $PCP_DIR/etc/pcp.env
+
+tmp=`mktemp -d ./pcp.XXXXXXXXX` || exit 1
+status=1
+
+$PCP_SHARE_DIR/lib/lockpmns root
+trap "$PCP_SHARE_DIR/lib/unlockpmns root; rm -rf $tmp; exit \$status" 0 1 2 3 15
+
+_trace()
+{
+ if $silent
+ then
+ :
+ else
+ if $nochanges
+ then
+ echo "$*"
+ else
+ echo "$*" >>$tmp/trace
+ fi
+ fi
+}
+
+_trace_file()
+{
+ if $silent
+ then
+ :
+ else
+ if $nochanges
+ then
+ cat $1
+ else
+ cat $1 >>$tmp/trace
+ fi
+ fi
+}
+
+_syslog()
+{
+ $PCP_SYSLOG_PROG -p user.alert -t PCP "$*"
+ _trace "$*"
+}
+
+_die()
+{
+ [ -f $tmp/trace ] && cat $tmp/trace
+ rm -f root.new
+ exit
+}
+
+prog=`basename $0`
+debug=false
+nochanges=false
+root=root
+root_updated=false
+update=false
+verbose=""
+dupok=false
+silent=false
+
+_usage()
+{
+ _trace "Usage: Rebuild [-dnsuv]"
+ _trace "Options:"
+ _trace " -d allow duplicate PMIDs in the PMNS"
+ _trace " -n dry run, show me what would be done"
+ _trace " -s silent, exit status says it all"
+ _trace " -u once only upgrade processing for a new PCP version"
+ _trace " -v verbose, for the paranoid"
+}
+
+# Fixup "root" after PCP upgrade
+#
+_upgrade_root()
+{
+ [ ! -f root ] && return
+ _trace "Rebuild: PCP upgrade processing for \"root\" PMNS changes ..."
+ $nochanges && _trace "+ cull root_* names from PMNS ... <root >$tmp/root"
+
+ # Cull root to remove all metrics from root_* files, so only metrics
+ # for optional PMDAs remain
+
+ # If there are deprecated top-level names (below "root") that are
+ # no longer in a root_* file, add them here ...
+ EXCLUDE="pagebuf origin"
+ if [ "$PCP_PLATFORM" = linux ]
+ then
+ # If we're on Linux and the proc PMDA is _not_ included in
+ # the pmcd configuration file, add the top-level metrics
+ # that migrated from the linux PMDA to the proc PMDA
+ #
+ if [ -f $PCP_PMCDCONF_PATH ]
+ then
+ if grep '^proc[ ]' $PCP_PMCDCONF_PATH >/dev/null
+ then
+ # proc PMDA is installed
+ #
+ :
+ else
+ EXCLUDE="$EXCLUDE proc cgroup"
+ fi
+ else
+ EXCLUDE="$EXCLUDE proc cgroup"
+ fi
+ else
+ EXCLUDE="$EXCLUDE proc cgroup"
+ fi
+
+ # now gather top-level names from root_* files
+ #
+ if [ "`echo root_*`" != "root_*" ]
+ then
+ EXCLUDE_TMP=`for file in root_*
+ do
+ $PCP_AWK_PROG <$file '
+$1 == "}" { exit }
+in_root==1 { printf "%s ",$1 }
+$1 == "root" && $2 == "{" { in_root = 1 }'
+done`
+ EXCLUDE="$EXCLUDE $EXCLUDE_TMP"
+ fi
+
+ if [ ! -z "$verbose" -a ! -z "$EXCLUDE" ]
+ then
+ _trace "Exclude these top-level names ..."
+ _trace "`echo $EXCLUDE | fmt | sed -e 's/^/ /'`"
+ fi
+
+ $PCP_AWK_PROG <root >$tmp/root '
+BEGIN { # exclude these top-level names and all their descendents
+ #
+ n = split("'"$EXCLUDE"'", e)
+ for (i=1; i <= n; i++) {
+ not_in_root[e[i]] = 1
+ }
+
+ in_root = 0
+ skip = 0
+ }
+$1 == "root" && $2 == "{" { in_root = 1 }
+$1 == "}" { in_root = 0 }
+in_root { if (!($1 in not_in_root)) print
+ next
+ }
+$2 == "{" { n = split($1, name, ".")
+ if (n > 0 && name[1] in not_in_root)
+ skip = 1
+ }
+skip && $1 == "}" { skip = 0; next }
+skip { next }
+ { print }'
+ if cmp -s root $tmp/root >/dev/null 2>&1
+ then
+ # no changes ... already been here?
+ :
+ else
+ # we will usually end up here
+ root=$tmp/root
+ root_updated=true
+ fi
+}
+
+while getopts dnusv\? c
+do
+ case $c
+ in
+ d) dupok=true
+ ;;
+ n) nochanges=true
+ echo "$prog: Warning: dry run, no changes will be made"
+ ;;
+ u) update=true
+ ;;
+ s) silent=true
+ ;;
+ v) verbose="-v"
+ ;;
+ \?) _usage
+ status=0
+ _die
+ ;;
+ esac
+done
+shift `expr $OPTIND - 1`
+
+# some preliminary checks
+#
+for file in $PCP_BINADM_DIR/pmnsmerge
+do
+ if [ ! -x $file ]
+ then
+ _syslog "$prog: $file is missing. Cannot proceed."
+ _die
+ fi
+done
+
+# remove all trace of old binary pmns (not used in PCP 3.6 or later)
+#
+rm -f root.bin
+
+here=`pwd`
+_trace "Rebuilding the Performance Metrics Name Space (PMNS) in $here ..."
+
+if [ $# -ne 0 ]
+then
+ _usage
+ _die
+fi
+
+if $nochanges
+then
+ CP="_trace + cp"
+ MV="_trace + mv"
+ LN="_trace + ln"
+ RM="_trace + rm"
+ PMNSMERGE="_trace + pmnsmerge ..."
+else
+ CP=cp
+ MV=mv
+ LN=ln
+ RM=rm
+ PMNSMERGE=
+
+ if [ ! -w `pwd` ]
+ then
+ _syslog "$prog: cannot write in directory `pwd`, script should be run as \"root\"?"
+ _die
+ fi
+
+ if [ ! -f root ]
+ then
+ echo "root {" >root
+ echo "}" >>root
+ chmod 644 root
+ fi
+
+ if [ ! -w root ]
+ then
+ _syslog "$prog: cannot write file \"root\" in directory `pwd`, script should be run as \"root\"?"
+ _die
+ fi
+fi
+
+if $update
+then
+ # PCP upgrade fix ups
+ #
+ _upgrade_root
+fi
+
+if [ -f $root ]
+then
+ haveroot=true
+else
+ haveroot=false
+ if $nochanges
+ then
+ _trace "+ create empty root PMNS ..."
+ else
+ root=$tmp/root
+ cat <<EOFEOF >$root
+root {
+}
+EOFEOF
+ fi
+fi
+
+# Merge $root and root_* to produce the new root.
+# Each root_* file should be a complete namespace,
+# i.e. it should include an entry for root.
+#
+mergelist=""
+if [ "`echo root_*`" != "root_*" ]
+then
+ mergelist=`ls -1 root_* | $PCP_AWK_PROG '
+ /root_web/ {next}
+ {print}'`
+fi
+
+_trace "$prog: merging the following PMNS files: "
+_trace $root $mergelist | fmt | sed -e 's/^/ /'
+
+rm -f root.new
+eval $PMNSMERGE
+if $dupok
+then
+ pmnsmerge $verbose -d $root $mergelist root.new >$tmp/out 2>&1
+else
+ pmnsmerge $verbose $root $mergelist root.new >$tmp/out 2>&1
+fi
+
+if [ $? != 0 ]
+then
+ cat $tmp/out
+ _syslog "$prog: pmnsmerge failed"
+ _trace " \"root\" has not been changed."
+ _die
+fi
+
+# Multiple Rebuilds in succession should be a no-op.
+#
+if [ -f root ]
+then
+ if $dupok
+ then
+ pminfo -m -N root 2>/dev/null | sort >$tmp/list.old
+ else
+ pminfo -m -n root 2>/dev/null | sort >$tmp/list.old
+ fi
+fi
+if [ ! -s $tmp/list.old ]
+then
+ if $dupok
+ then
+ pminfo -m -N $root 2>/dev/null | sort >$tmp/list.old
+ else
+ pminfo -m -n $root 2>/dev/null | sort >$tmp/list.old
+ fi
+fi
+if $dupok
+then
+ pminfo -m -N root.new | sort >$tmp/list.new
+else
+ pminfo -m -n root.new | sort >$tmp/list.new
+fi
+if cmp -s $tmp/list.old $tmp/list.new > /dev/null 2>&1
+then
+ [ ! -f root ] && eval $MV root.new root
+ _trace "$prog: PMNS is unchanged."
+else
+ # Install the new root
+ #
+ [ ! -z "$verbose" ] && _trace_file $tmp/out
+ if $haveroot
+ then
+ _trace "$prog: PMNS \"$here/root\" updated."
+ _trace "... previous version saved as \"$here/root.prev\""
+ eval $MV root root.prev
+ else
+ _trace "$prog: new PMNS \"$here/root\" created."
+ fi
+ eval $MV root.new root
+
+ # signal pmcd if it is running
+ #
+ pminfo -v pmcd.version >/dev/null 2>&1 && pmsignal -a -s HUP pmcd
+
+ if [ ! -z "$verbose" ] && $haveroot
+ then
+ _trace "+ PMNS differences ..."
+ diff -c $tmp/list.old $tmp/list.new >$tmp/diff
+ _trace_file $tmp/diff
+ _trace
+ _trace "+ root differences ..."
+ diff -c root.prev root >$tmp/diff
+ _trace_file $tmp/diff
+ fi
+fi
+rm -f root.new
+
+# remake stdpmid
+#
+[ -f Make.stdpmid ] && ./Make.stdpmid
+
+[ X"$verbose" = X-v -a -f $tmp/trace ] && cat $tmp/trace
+
+status=0
+exit
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