diff --git a/heartbeat/ocf-rarun b/heartbeat/ocf-rarun index c10fbe23e..ec4bdba32 100644 --- a/heartbeat/ocf-rarun +++ b/heartbeat/ocf-rarun @@ -1,146 +1,146 @@ # # This is the OCF RA driver. It should take care of all the # boring details and leave only the parts which are really about # the actual resource to the resource agent. # # The interface # # The RA needs to define functions for all supported actions and # name them _. For instance, apache_start or # apache_meta_data. # # The following functions are required: # # - _methods # - _usage # - _meta_data # - _start # - _stop # - _monitor # # The required parameters should all be listed in the # OCF_REQUIRED_PARAMS variable. For example, "config user group". # # The OCF_REQUIRED_BINARIES variable should contain a list of all # programs which are needed for the correct operation of the # resource agent. # # _getconfig and _validate_all are optional. getconfig is # where RA can read more configuration from the file system or do # some other configuration processing. # validate_all checks if the environment is OK. # # If it exists, the _probe function is invoked on probes # (monitor with interval 0) instead of _monitor. # # NB: If the RA name contains a '-', it is going to be converted # to '_' when generating function names. For syslog-ng for # instance, the monitor function name would be syslog_ng_monitor is_function() { test z"`command -v $1`" = z"$1" } run_function() { is_function $1 && $1 } is_var_defined() { test z != "z$(eval echo $`echo $1`)" } mk_action_func() { - ACTION_FUNC=${OCF_RESOURCE_TYPE}_`echo $__OCF_ACTION | tr '-' '_'` + ACTION_FUNC=`echo ${OCF_RESOURCE_TYPE}_$__OCF_ACTION | tr '-' '_'` } validate_args() { is_function $ACTION_FUNC || { ocf_log err "$__OCF_ACTION: action not supported" run_function ${OCF_RESOURCE_TYPE}_methods exit $OCF_ERR_UNIMPLEMENTED } } simple_actions() { case $__OCF_ACTION in meta-data|usage|methods) $ACTION_FUNC exit $OCF_SUCCESS ;; esac } run_probe() { if is_function ${OCF_RESOURCE_TYPE}_probe; then ${OCF_RESOURCE_TYPE}_probe exit fi } check_required_params() { local v for v in $OCF_REQUIRED_PARAMS; do is_var_defined OCF_RESKEY_$v || { ocf_log err "$v: required parameter not set" exit $OCF_ERR_CONFIGURED } done } # this function does an exit (end of the road) handle_invalid_env() { local rc msg rc=$1 msg=${2:-"environment is invalid, resource considered stopped"} case "$__OCF_ACTION" in stop) ocf_log info $msg exit $OCF_SUCCESS ;; monitor) if ocf_is_probe; then ocf_log info $msg exit $OCF_NOT_RUNNING else # in recurring monitor, this amounts to error ocf_log err $msg exit $OCF_ERR_GENERIC fi ;; status) ocf_log info $msg exit $LSB_STATUS_STOPPED ;; *) ocf_log err $msg exit $rc ;; esac } check_required_binaries() { local v for v in $OCF_REQUIRED_BINARIES; do have_binary $v || { handle_invalid_env $OCF_ERR_INSTALLED "$v: required binary not installed" # unreachable } done } validate_env() { check_required_binaries # all binaries present? is_function ${OCF_RESOURCE_TYPE}_validate_all || return local rc LSB_STATUS_STOPPED=3 ${OCF_RESOURCE_TYPE}_validate_all # is environment ok? rc=$? if [ $rc -ne 0 ]; then handle_invalid_env $rc # unreachable fi } # ocf_rarun: the main function ocf_rarun() { mk_action_func # create action function name validate_args # validate command line arguments simple_actions # run meta-data (or similar) check_required_params # all required parameters defined? run_function ${OCF_RESOURCE_TYPE}_getconfig # get extra configuration validate_env # is environment ok? ocf_is_probe && run_probe # do probe shift 1 # skip action $ACTION_FUNC $* # run action }