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Updated ofunctions
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deajan
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@ -1,9 +1,13 @@
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#### MINIMAL-FUNCTION-SET BEGIN ####
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## FUNC_BUILD=2016082606
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## BEGIN Generic functions for osync & obackup written in 2013-2016 by Orsiris de Jong - http://www.netpower.fr - ozy@netpower.fr
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## FUNC_BUILD=2016082901
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## BEGIN Generic bash functions written in 2013-2016 by Orsiris de Jong - http://www.netpower.fr - ozy@netpower.fr
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## To use in a program, define the following variables:
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## PROGRAM=program-name
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## INSTANCE_ID=program-instance-name
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## _DEBUG=yes/no
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## type -p does not work on platforms other than linux (bash). If if does not work, always assume output is not a zero exitcode
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if ! type "$BASH" > /dev/null; then
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echo "Please run this script only with bash shell. Tested on bash >= 3.2"
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exit 127
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@ -16,20 +20,21 @@ export LC_ALL=C
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MAIL_ALERT_MSG="Execution of $PROGRAM instance $INSTANCE_ID on $(date) has warnings/errors."
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# Environment variables that can be overriden by programs
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_DRYRUN=0
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_SILENT=0
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_DRYRUN=false
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_SILENT=false
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_VERBOSE=false
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_LOGGER_PREFIX="date"
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_LOGGER_STDERR=0
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_LOGGER_STDERR=false
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if [ "$KEEP_LOGGING" == "" ]; then
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KEEP_LOGGING=1801
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fi
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# Initial error status, logging 'WARN', 'ERROR' or 'CRITICAL' will enable alerts flags
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ERROR_ALERT=0
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WARN_ALERT=0
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ERROR_ALERT=false
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WARN_ALERT=false
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# Current log
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CURRENT_LOG
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# Log from current run
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CURRENT_LOG=
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## allow function call checks #__WITH_PARANOIA_DEBUG
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if [ "$_PARANOIA_DEBUG" == "yes" ];then #__WITH_PARANOIA_DEBUG
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@ -40,11 +45,11 @@ fi #__WITH_PARANOIA_DEBUG
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if [ ! "$_DEBUG" == "yes" ]; then
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_DEBUG=no
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SLEEP_TIME=.05 # Tested under linux and FreeBSD bash, #TODO tests on cygwin / msys
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_VERBOSE=0
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_VERBOSE=false
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else
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SLEEP_TIME=1
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trap 'TrapError ${LINENO} $?' ERR
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_VERBOSE=1
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_VERBOSE=true
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fi
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SCRIPT_PID=$$
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@ -52,6 +57,10 @@ SCRIPT_PID=$$
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LOCAL_USER=$(whoami)
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LOCAL_HOST=$(hostname)
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if [ "$PROGRAM" == "" ]; then
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PROGRAM="ofunctions"
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fi
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## Default log file until config file is loaded
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if [ -w /var/log ]; then
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LOG_FILE="/var/log/$PROGRAM.log"
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@ -94,17 +103,21 @@ function _Logger {
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echo -e "$lvalue" >> "$LOG_FILE"
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CURRENT_LOG="$CURRENT_LOG"$'\n'"$lvalue"
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if [ "$_LOGGER_STDERR" -eq 1 ]; then
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if [ $_LOGGER_STDERR == true ]; then
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cat <<< "$evalue" 1>&2
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elif [ "$_SILENT" -eq 0 ]; then
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elif [ "$_SILENT" == false ]; then
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echo -e "$svalue"
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fi
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}
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# General log function with log levels
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# General log function with log levels:
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# CRITICAL, ERROR, WARN are colored in stdout, prefixed in stderr
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# NOTICE is standard level
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# VERBOSE is only sent to stdout / stderr if _VERBOSE=true
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# DEBUG & PARANOIA_DEBUG are only sent if _DEBUG=yes
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function Logger {
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local value="${1}" # Sentence to log (in double quotes)
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local level="${2}" # Log level: PARANOIA_DEBUG, DEBUG, NOTICE, WARN, ERROR, CRITIAL
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local level="${2}" # Log level: PARANOIA_DEBUG, DEBUG, VERBOSE, NOTICE, WARN, ERROR, CRITIAL
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if [ "$_LOGGER_PREFIX" == "time" ]; then
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prefix="TIME: $SECONDS - "
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@ -116,19 +129,22 @@ function Logger {
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if [ "$level" == "CRITICAL" ]; then
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_Logger "$prefix\e[41m$value\e[0m" "$prefix$level:$value" "$level:$value"
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ERROR_ALERT=1
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ERROR_ALERT=true
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return
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elif [ "$level" == "ERROR" ]; then
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_Logger "$prefix\e[91m$value\e[0m" "$prefix$level:$value" "$level:$value"
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ERROR_ALERT=1
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ERROR_ALERT=true
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return
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elif [ "$level" == "WARN" ]; then
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_Logger "$prefix\e[93m$value\e[0m" "$prefix$level:$value" "$level:$value"
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WARN_ALERT=1
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WARN_ALERT=true
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return
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elif [ "$level" == "NOTICE" ]; then
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_Logger "$prefix$value"
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return
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elif [ "$level" == "VERBOSE" ] && [ $_VERBOSE == true ]; then
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_Logger "$prefix$value"
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return
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elif [ "$level" == "DEBUG" ]; then
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if [ "$_DEBUG" == "yes" ]; then
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_Logger "$prefix$value"
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@ -165,7 +181,7 @@ function QuickLogger {
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__CheckArguments 1 $# ${FUNCNAME[0]} "$@" #__WITH_PARANOIA_DEBUG
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if [ "$_SILENT" -eq 1 ]; then
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if [ $_SILENT == true ]; then
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_QuickLogger "$value" "log"
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else
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_QuickLogger "$value" "stdout"
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@ -262,9 +278,9 @@ function SendAlert {
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fi
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body="$MAIL_ALERT_MSG"$'\n\n'"$CURRENT_LOG"
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if [ $ERROR_ALERT -eq 1 ]; then
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if [ $ERROR_ALERT == true ]; then
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subject="Error alert for $INSTANCE_ID"
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elif [ $WARN_ALERT -eq 1 ]; then
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elif [ $WARN_ALERT == true ]; then
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subject="Warning alert for $INSTANCE_ID"
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else
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subject="Alert for $INSTANCE_ID"
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@ -516,7 +532,7 @@ function TrapError {
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local job="$0"
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local line="$1"
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local code="${2:-1}"
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if [ $_SILENT -eq 0 ]; then
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if [ $_SILENT == false ]; then
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echo -e " /!\ ERROR in ${job}: Near line ${line}, exit code ${code}"
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fi
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}
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@ -542,7 +558,7 @@ function LoadConfigFile {
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}
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function Spinner {
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if [ $_SILENT -eq 1 ]; then
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if [ $_SILENT == true ]; then
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return 0
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fi
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@ -583,6 +599,7 @@ function joinString {
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# Time control function for background processes, suitable for multiple synchronous processes
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# Fills a global variable called WAIT_FOR_TASK_COMPLETION that contains list of failed pids in format pid1:result1;pid2:result2
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# Warning: Don't imbricate this function into another run if you plan to use the global variable output
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function WaitForTaskCompletion {
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local pids="${1}" # pids to wait for, separated by semi-colon
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local soft_max_time="${2}" # If program with pid $pid takes longer than $soft_max_time seconds, will log a warning, unless $soft_max_time equals 0.
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@ -603,9 +620,13 @@ function WaitForTaskCompletion {
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local retval=0 # return value of monitored pid process
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local errorcount=0 # Number of pids that finished with errors
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local pid # Current pid working on
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local pidCount # number of given pids
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local pidState # State of the process
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local pidsArray # Array of currently running pids
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local newPidsArray # New array of currently running pids
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IFS=';' read -a pidsArray <<< "$pids"
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pidCount=${#pidsArray[@]}
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@ -677,6 +698,7 @@ function WaitForTaskCompletion {
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done
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pidsArray=("${newPidsArray[@]}")
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# Trivial wait time for bash to not eat up all CPU
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sleep $SLEEP_TIME
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done
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@ -690,6 +712,66 @@ function WaitForTaskCompletion {
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fi
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}
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# Take a list of commands to run, runs them sequentially with numberOfProcesses commands simultaneously runs
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# Returns the number of non zero exit codes from commands
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function ParallelExec {
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local numberOfProcesses="${1}" # Number of simultaneous commands to run
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local commandsArg="${2}" # Semi-colon separated list of commands
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local pid
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local runningPids=0
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local counter=0
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local commandsArray
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local pidsArray
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local newPidsArray
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local retval
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local retvalAll=0
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local pidState
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local commandsArrayPid
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IFS=';' read -r -a commandsArray <<< "$commandsArg"
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Logger "Runnning ${#commandsArray[@]} commands in $numberOfProcesses simultaneous processes." "DEBUG"
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while [ $counter -lt "${#commandsArray[@]}" ] || [ ${#pidsArray[@]} -gt 0 ]; do
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while [ $counter -lt "${#commandsArray[@]}" ] && [ ${#pidsArray[@]} -lt $numberOfProcesses ]; do
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Logger "Running command [${commandsArray[$counter]}]." "DEBUG"
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eval "${commandsArray[$counter]}" &
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pid=$!
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pidsArray+=($pid)
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commandsArrayPid[$pid]="${commandsArray[$counter]}"
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counter=$((counter+1))
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done
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newPidsArray=()
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for pid in "${pidsArray[@]}"; do
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# Handle uninterruptible sleep state or zombies by ommiting them from running process array (How to kill that is already dead ? :)
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if kill -0 $pid > /dev/null 2>&1; then
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pidState=$(ps -p$pid -o state= 2 > /dev/null)
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if [ "$pidState" != "D" ] && [ "$pidState" != "Z" ]; then
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newPidsArray+=($pid)
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fi
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else
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# pid is dead, get it's exit code from wait command
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wait $pid
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retval=$?
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if [ $retval -ne 0 ]; then
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Logger "Command [${commandsArrayPid[$pid]}] failed with exit code [$retval]." "ERROR"
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retvalAll=$((retvalAll+1))
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fi
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fi
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done
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pidsArray=("${newPidsArray[@]}")
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# Trivial wait time for bash to not eat up all CPU
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sleep $SLEEP_TIME
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done
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return $retvalAll
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}
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function CleanUp {
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__CheckArguments 0 $# ${FUNCNAME[0]} "$@" #__WITH_PARANOIA_DEBUG
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@ -877,7 +959,7 @@ function RunLocalCommand {
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local hard_max_time="${2}" # Max time to wait for command to compleet
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__CheckArguments 2 $# ${FUNCNAME[0]} "$@" #__WITH_PARANOIA_DEBUG
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if [ $_DRYRUN -ne 0 ]; then
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if [ $_DRYRUN == true ]; then
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Logger "Dryrun: Local command [$command] not run." "NOTICE"
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return 0
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fi
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@ -892,7 +974,7 @@ function RunLocalCommand {
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Logger "Command failed." "ERROR"
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fi
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if [ $_VERBOSE -eq 1 ] || [ $retval -ne 0 ]; then
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if [ $_VERBOSE == true ] || [ $retval -ne 0 ]; then
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Logger "Command output:\n$(cat $RUN_DIR/$PROGRAM.${FUNCNAME[0]}.$SCRIPT_PID)" "NOTICE"
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fi
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@ -910,7 +992,7 @@ function RunRemoteCommand {
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CheckConnectivity3rdPartyHosts
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CheckConnectivityRemoteHost
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if [ $_DRYRUN -ne 0 ]; then
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if [ $_DRYRUN == true ]; then
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Logger "Dryrun: Local command [$command] not run." "NOTICE"
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return 0
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fi
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@ -927,7 +1009,7 @@ function RunRemoteCommand {
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Logger "Command failed." "ERROR"
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fi
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if [ -f "$RUN_DIR/$PROGRAM.${FUNCNAME[0]}.$SCRIPT_PID" ] && ([ $_VERBOSE -eq 1 ] || [ $retval -ne 0 ])
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if [ -f "$RUN_DIR/$PROGRAM.${FUNCNAME[0]}.$SCRIPT_PID" ] && ([ $_VERBOSE == true ] || [ $retval -ne 0 ])
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then
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Logger "Command output:\n$(cat $RUN_DIR/$PROGRAM.${FUNCNAME[0]}.$SCRIPT_PID)" "NOTICE"
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fi
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@ -1001,7 +1083,7 @@ function CheckConnectivity3rdPartyHosts {
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if [ "$_PARANOIA_DEBUG" != "yes" ]; then # Do not loose time in paranoia debug
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if [ "$REMOTE_3RD_PARTY_HOSTS" != "" ]; then
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remote_3rd_party_success=0
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remote_3rd_party_success=false
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for i in $REMOTE_3RD_PARTY_HOSTS
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do
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eval "$PING_CMD $i > /dev/null 2>&1" &
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@ -1009,11 +1091,11 @@ function CheckConnectivity3rdPartyHosts {
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if [ $? != 0 ]; then
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Logger "Cannot ping 3rd party host $i" "NOTICE"
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else
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remote_3rd_party_success=1
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remote_3rd_party_success=true
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fi
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done
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if [ $remote_3rd_party_success -ne 1 ]; then
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if [ $remote_3rd_party_success == false ]; then
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Logger "No remote 3rd party host responded to ping. No internet ?" "ERROR"
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return 1
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else
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@ -1044,14 +1126,14 @@ function __CheckArguments {
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# In order to avoid this, we need to iterate over ${4} and count
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local iterate=4
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local fetchArguments=1
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local fetchArguments=true
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local argList=""
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local countedArguments
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while [ $fetchArguments -eq 1 ]; do
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while [ $fetchArguments == true ]; do
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cmd='argument=${'$iterate'}'
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eval $cmd
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if [ "$argument" = "" ]; then
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fetchArguments=0
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fetchArguments=false
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else
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argList="$arg_list [Argument $(($iterate-3)): $argument]"
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iterate=$(($iterate+1))
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@ -1193,7 +1275,7 @@ function PreInit {
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## Set rsync default arguments
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RSYNC_ARGS="-rltD"
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if [ "$_DRYRUN" -eq 1 ]; then
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if [ "$_DRYRUN" == true ]; then
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RSYNC_DRY_ARG="-n"
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DRY_WARNING="/!\ DRY RUN"
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else
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