Initial merge result with mariaDB 10: lp:maria

scripts/mysqld_safe.sh

@@ -147,7 +147,7 @@ log_notice () {
 }
 
 eval_log_error () {
-  cmd="$1"
+  local cmd="$1"
   case $logging in
     file) cmd="$cmd >> "`shell_quote_string "$err_log"`" 2>&1" ;;
     syslog)
@@ -183,6 +183,73 @@ shell_quote_string() {
   echo "$1" | sed -e 's,\([^a-zA-Z0-9/_.=-]\),\\\1,g'
 }
 
+wsrep_pick_url() {
+  [ $# -eq 0 ] && return 0
+
+  log_error "WSREP: 'wsrep_urls' is DEPRECATED! Use wsrep_cluster_address to specify multiple addresses instead."
+
+  if ! which nc >/dev/null; then
+    log_error "ERROR: nc tool not found in PATH! Make sure you have it installed."
+    return 1
+  fi
+
+  local url
+  # Assuming URL in the form scheme://host:port
+  # If host and port are not NULL, the liveness of URL is assumed to be tested
+  # If port part is absent, the url is returned literally and unconditionally
+  # If every URL has port but none is reachable, nothing is returned
+  for url in `echo $@ | sed s/,/\ /g` 0; do
+    local host=`echo $url | cut -d \: -f 2 | sed s/^\\\/\\\///`
+    local port=`echo $url | cut -d \: -f 3`
+    [ -z "$port" ] && break
+    nc -z "$host" $port >/dev/null && break
+  done
+
+  if [ "$url" == "0" ]; then
+    log_error "ERROR: none of the URLs in '$@' is reachable."
+    return 1
+  fi
+
+  echo $url
+}
+
+# Run mysqld with --wsrep-recover and parse recovered position from log.
+# Position will be stored in wsrep_start_position_opt global.
+wsrep_start_position_opt=""
+wsrep_recover_position() {
+  local mysqld_cmd="$@"
+  local wr_logfile=$(mktemp)
+  local euid=$(id -u)
+  local ret=0
+
+  [ "$euid" = "0" ] && chown $user $wr_logfile
+  chmod 600 $wr_logfile
+
+  log_notice "WSREP: Running position recovery with --log_error=$wr_logfile"
+
+  eval_log_error $mysqld_cmd --log_error=$wr_logfile --wsrep-recover
+
+  local rp="$(grep 'WSREP: Recovered position:' $wr_logfile)"
+  if [ -z "$rp" ]; then
+    local skipped="$(grep WSREP $wr_logfile | grep 'skipping position recovery')"
+    if [ -z "$skipped" ]; then
+      log_error "WSREP: Failed to recover position: " `cat $wr_logfile`;
+      ret=1
+    else
+      log_notice "WSREP: Position recovery skipped"
+    fi
+  else
+    local start_pos="$(echo $rp | sed 's/.*WSREP\:\ Recovered\ position://' \
+        | sed 's/^[ \t]*//')"
+    log_notice "WSREP: Recovered position $start_pos"
+    wsrep_start_position_opt="--wsrep_start_position=$start_pos"
+  fi
+
+  rm $wr_logfile
+
+  return $ret
+}
+
 parse_arguments() {
   # We only need to pass arguments through to the server if we don't
   # handle them here.  So, we collect unrecognized options (passed on
@@ -244,7 +311,13 @@ parse_arguments() {
       --skip-syslog) want_syslog=0 ;;
       --syslog-tag=*) syslog_tag="$val" ;;
       --timezone=*) TZ="$val"; export TZ; ;;
-
+      --wsrep[-_]urls=*) wsrep_urls="$val"; ;;
+      --wsrep[-_]provider=*)
+        if test -n "$val" && test "$val" != "none"
+        then
+          wsrep_restart=1
+        fi
+        ;;
       --help) usage ;;
 
       *)
@@ -788,7 +861,8 @@ do
 done
 cmd="$cmd $args"
 # Avoid 'nohup: ignoring input' warning
-test -n "$NOHUP_NICENESS" && cmd="$cmd < /dev/null"
+nohup_redir=""
+test -n "$NOHUP_NICENESS" && nohup_redir=" < /dev/null"
 
 log_notice "Starting $MYSQLD daemon with databases from $DATADIR"
 
@@ -799,13 +873,31 @@ max_fast_restarts=5
 # flag whether a usable sleep command exists
 have_sleep=1
 
+# maximum number of wsrep restarts
+max_wsrep_restarts=0
+
+# maximum number of wsrep restarts
+max_wsrep_restarts=0
+
 while true
 do
   rm -f "$pid_file"	# Some extra safety
 
   start_time=`date +%M%S`
 
-  eval_log_error "$cmd"
+  # this sets wsrep_start_position_opt
+  wsrep_recover_position "$cmd"
+
+  [ $? -ne 0 ] && exit 1 #
+
+  [ -n "$wsrep_urls" ] && url=`wsrep_pick_url $wsrep_urls` # check connect address
+
+  if [ -z "$url" ]
+  then
+    eval_log_error "$cmd $wsrep_start_position_opt $nohup_redir"
+  else
+    eval_log_error "$cmd $wsrep_start_position_opt --wsrep_cluster_address=$url $nohup_redir"
+  fi
 
   if [ $want_syslog -eq 0 -a ! -f "$err_log" ]; then
     touch "$err_log"                    # hypothetical: log was renamed but not
@@ -875,6 +967,20 @@ do
       I=`expr $I + 1`
     done
   fi
+
+  if [ -n "$wsrep_restart" ]
+  then
+    if [ $wsrep_restart -le $max_wsrep_restarts ]
+    then
+      wsrep_restart=`expr $wsrep_restart + 1`
+      log_notice "WSREP: sleeping 15 seconds before restart"
+      sleep 15
+    else
+      log_notice "WSREP: not restarting wsrep node automatically"
+      break
+    fi
+  fi
+
   log_notice "mysqld restarted"
   if test -n "$CRASH_SCRIPT"
   then