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Updated ofunctions

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deajan 2016-08-29 18:26:47 +02:00
parent 40eb0f760c
commit 4a9ebd0abc
1 changed files with 117 additions and 35 deletions
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dev/ofunctions.sh
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@ -1,9 +1,13 @@
#### MINIMAL-FUNCTION-SET BEGIN #### #### MINIMAL-FUNCTION-SET BEGIN ####
## FUNC_BUILD=2016082606 ## FUNC_BUILD=2016082901
## BEGIN Generic functions for osync & obackup written in 2013-2016 by Orsiris de Jong - http://www.netpower.fr - ozy@netpower.fr ## BEGIN Generic bash functions written in 2013-2016 by Orsiris de Jong - http://www.netpower.fr - ozy@netpower.fr
## To use in a program, define the following variables:
## PROGRAM=program-name
## INSTANCE_ID=program-instance-name
## _DEBUG=yes/no
## type -p does not work on platforms other than linux (bash). If if does not work, always assume output is not a zero exitcode
if ! type "$BASH" > /dev/null; then if ! type "$BASH" > /dev/null; then
echo "Please run this script only with bash shell. Tested on bash >= 3.2" echo "Please run this script only with bash shell. Tested on bash >= 3.2"
exit 127 exit 127
@ -16,20 +20,21 @@ export LC_ALL=C
MAIL_ALERT_MSG="Execution of $PROGRAM instance $INSTANCE_ID on $(date) has warnings/errors." MAIL_ALERT_MSG="Execution of $PROGRAM instance $INSTANCE_ID on $(date) has warnings/errors."
# Environment variables that can be overriden by programs # Environment variables that can be overriden by programs
_DRYRUN=0 _DRYRUN=false
_SILENT=0 _SILENT=false
_VERBOSE=false
_LOGGER_PREFIX="date" _LOGGER_PREFIX="date"
_LOGGER_STDERR=0 _LOGGER_STDERR=false
if [ "$KEEP_LOGGING" == "" ]; then if [ "$KEEP_LOGGING" == "" ]; then
KEEP_LOGGING=1801 KEEP_LOGGING=1801
fi fi
# Initial error status, logging 'WARN', 'ERROR' or 'CRITICAL' will enable alerts flags # Initial error status, logging 'WARN', 'ERROR' or 'CRITICAL' will enable alerts flags
ERROR_ALERT=0 ERROR_ALERT=false
WARN_ALERT=0 WARN_ALERT=false
# Current log # Log from current run
CURRENT_LOG CURRENT_LOG=
## allow function call checks #__WITH_PARANOIA_DEBUG ## allow function call checks #__WITH_PARANOIA_DEBUG
if [ "$_PARANOIA_DEBUG" == "yes" ];then #__WITH_PARANOIA_DEBUG if [ "$_PARANOIA_DEBUG" == "yes" ];then #__WITH_PARANOIA_DEBUG
@ -40,11 +45,11 @@ fi #__WITH_PARANOIA_DEBUG
if [ ! "$_DEBUG" == "yes" ]; then if [ ! "$_DEBUG" == "yes" ]; then
_DEBUG=no _DEBUG=no
SLEEP_TIME=.05 # Tested under linux and FreeBSD bash, #TODO tests on cygwin / msys SLEEP_TIME=.05 # Tested under linux and FreeBSD bash, #TODO tests on cygwin / msys
_VERBOSE=0 _VERBOSE=false
else else
SLEEP_TIME=1 SLEEP_TIME=1
trap 'TrapError ${LINENO} $?' ERR trap 'TrapError ${LINENO} $?' ERR
_VERBOSE=1 _VERBOSE=true
fi fi
SCRIPT_PID=$$ SCRIPT_PID=$$
@ -52,6 +57,10 @@ SCRIPT_PID=$$
LOCAL_USER=$(whoami) LOCAL_USER=$(whoami)
LOCAL_HOST=$(hostname) LOCAL_HOST=$(hostname)
if [ "$PROGRAM" == "" ]; then
PROGRAM="ofunctions"
fi
## Default log file until config file is loaded ## Default log file until config file is loaded
if [ -w /var/log ]; then if [ -w /var/log ]; then
LOG_FILE="/var/log/$PROGRAM.log" LOG_FILE="/var/log/$PROGRAM.log"
@ -94,17 +103,21 @@ function _Logger {
echo -e "$lvalue" >> "$LOG_FILE" echo -e "$lvalue" >> "$LOG_FILE"
CURRENT_LOG="$CURRENT_LOG"$'\n'"$lvalue" CURRENT_LOG="$CURRENT_LOG"$'\n'"$lvalue"
if [ "$_LOGGER_STDERR" -eq 1 ]; then if [ $_LOGGER_STDERR == true ]; then
cat <<< "$evalue" 1>&2 cat <<< "$evalue" 1>&2
elif [ "$_SILENT" -eq 0 ]; then elif [ "$_SILENT" == false ]; then
echo -e "$svalue" echo -e "$svalue"
fi fi
} }
# General log function with log levels # General log function with log levels:
# CRITICAL, ERROR, WARN are colored in stdout, prefixed in stderr
# NOTICE is standard level
# VERBOSE is only sent to stdout / stderr if _VERBOSE=true
# DEBUG & PARANOIA_DEBUG are only sent if _DEBUG=yes
function Logger { function Logger {
local value="${1}" # Sentence to log (in double quotes) local value="${1}" # Sentence to log (in double quotes)
local level="${2}" # Log level: PARANOIA_DEBUG, DEBUG, NOTICE, WARN, ERROR, CRITIAL local level="${2}" # Log level: PARANOIA_DEBUG, DEBUG, VERBOSE, NOTICE, WARN, ERROR, CRITIAL
if [ "$_LOGGER_PREFIX" == "time" ]; then if [ "$_LOGGER_PREFIX" == "time" ]; then
prefix="TIME: $SECONDS - " prefix="TIME: $SECONDS - "
@ -116,19 +129,22 @@ function Logger {
if [ "$level" == "CRITICAL" ]; then if [ "$level" == "CRITICAL" ]; then
_Logger "$prefix\e[41m$value\e[0m" "$prefix$level:$value" "$level:$value" _Logger "$prefix\e[41m$value\e[0m" "$prefix$level:$value" "$level:$value"
ERROR_ALERT=1 ERROR_ALERT=true
return return
elif [ "$level" == "ERROR" ]; then elif [ "$level" == "ERROR" ]; then
_Logger "$prefix\e[91m$value\e[0m" "$prefix$level:$value" "$level:$value" _Logger "$prefix\e[91m$value\e[0m" "$prefix$level:$value" "$level:$value"
ERROR_ALERT=1 ERROR_ALERT=true
return return
elif [ "$level" == "WARN" ]; then elif [ "$level" == "WARN" ]; then
_Logger "$prefix\e[93m$value\e[0m" "$prefix$level:$value" "$level:$value" _Logger "$prefix\e[93m$value\e[0m" "$prefix$level:$value" "$level:$value"
WARN_ALERT=1 WARN_ALERT=true
return return
elif [ "$level" == "NOTICE" ]; then elif [ "$level" == "NOTICE" ]; then
_Logger "$prefix$value" _Logger "$prefix$value"
return return
elif [ "$level" == "VERBOSE" ] && [ $_VERBOSE == true ]; then
_Logger "$prefix$value"
return
elif [ "$level" == "DEBUG" ]; then elif [ "$level" == "DEBUG" ]; then
if [ "$_DEBUG" == "yes" ]; then if [ "$_DEBUG" == "yes" ]; then
_Logger "$prefix$value" _Logger "$prefix$value"
@ -165,7 +181,7 @@ function QuickLogger {
__CheckArguments 1 $# ${FUNCNAME[0]} "$@" #__WITH_PARANOIA_DEBUG __CheckArguments 1 $# ${FUNCNAME[0]} "$@" #__WITH_PARANOIA_DEBUG
if [ "$_SILENT" -eq 1 ]; then if [ $_SILENT == true ]; then
_QuickLogger "$value" "log" _QuickLogger "$value" "log"
else else
_QuickLogger "$value" "stdout" _QuickLogger "$value" "stdout"
@ -262,9 +278,9 @@ function SendAlert {
fi fi
body="$MAIL_ALERT_MSG"$'\n\n'"$CURRENT_LOG" body="$MAIL_ALERT_MSG"$'\n\n'"$CURRENT_LOG"
if [ $ERROR_ALERT -eq 1 ]; then if [ $ERROR_ALERT == true ]; then
subject="Error alert for $INSTANCE_ID" subject="Error alert for $INSTANCE_ID"
elif [ $WARN_ALERT -eq 1 ]; then elif [ $WARN_ALERT == true ]; then
subject="Warning alert for $INSTANCE_ID" subject="Warning alert for $INSTANCE_ID"
else else
subject="Alert for $INSTANCE_ID" subject="Alert for $INSTANCE_ID"
@ -516,7 +532,7 @@ function TrapError {
local job="$0" local job="$0"
local line="$1" local line="$1"
local code="${2:-1}" local code="${2:-1}"
if [ $_SILENT -eq 0 ]; then if [ $_SILENT == false ]; then
echo -e " /!\ ERROR in ${job}: Near line ${line}, exit code ${code}" echo -e " /!\ ERROR in ${job}: Near line ${line}, exit code ${code}"
fi fi
} }
@ -542,7 +558,7 @@ function LoadConfigFile {
} }
function Spinner { function Spinner {
if [ $_SILENT -eq 1 ]; then if [ $_SILENT == true ]; then
return 0 return 0
fi fi
@ -583,6 +599,7 @@ function joinString {
# Time control function for background processes, suitable for multiple synchronous processes # Time control function for background processes, suitable for multiple synchronous processes
# Fills a global variable called WAIT_FOR_TASK_COMPLETION that contains list of failed pids in format pid1:result1;pid2:result2 # Fills a global variable called WAIT_FOR_TASK_COMPLETION that contains list of failed pids in format pid1:result1;pid2:result2
# Warning: Don't imbricate this function into another run if you plan to use the global variable output # Warning: Don't imbricate this function into another run if you plan to use the global variable output
function WaitForTaskCompletion { function WaitForTaskCompletion {
local pids="${1}" # pids to wait for, separated by semi-colon local pids="${1}" # pids to wait for, separated by semi-colon
local soft_max_time="${2}" # If program with pid $pid takes longer than $soft_max_time seconds, will log a warning, unless $soft_max_time equals 0. local soft_max_time="${2}" # If program with pid $pid takes longer than $soft_max_time seconds, will log a warning, unless $soft_max_time equals 0.
@ -603,9 +620,13 @@ function WaitForTaskCompletion {
local retval=0 # return value of monitored pid process local retval=0 # return value of monitored pid process
local errorcount=0 # Number of pids that finished with errors local errorcount=0 # Number of pids that finished with errors
local pid # Current pid working on
local pidCount # number of given pids local pidCount # number of given pids
local pidState # State of the process local pidState # State of the process
local pidsArray # Array of currently running pids
local newPidsArray # New array of currently running pids
IFS=';' read -a pidsArray <<< "$pids" IFS=';' read -a pidsArray <<< "$pids"
pidCount=${#pidsArray[@]} pidCount=${#pidsArray[@]}
@ -677,6 +698,7 @@ function WaitForTaskCompletion {
done done
pidsArray=("${newPidsArray[@]}") pidsArray=("${newPidsArray[@]}")
# Trivial wait time for bash to not eat up all CPU
sleep $SLEEP_TIME sleep $SLEEP_TIME
done done
@ -690,6 +712,66 @@ function WaitForTaskCompletion {
fi fi
} }
# Take a list of commands to run, runs them sequentially with numberOfProcesses commands simultaneously runs
# Returns the number of non zero exit codes from commands
function ParallelExec {
local numberOfProcesses="${1}" # Number of simultaneous commands to run
local commandsArg="${2}" # Semi-colon separated list of commands
local pid
local runningPids=0
local counter=0
local commandsArray
local pidsArray
local newPidsArray
local retval
local retvalAll=0
local pidState
local commandsArrayPid
IFS=';' read -r -a commandsArray <<< "$commandsArg"
Logger "Runnning ${#commandsArray[@]} commands in $numberOfProcesses simultaneous processes." "DEBUG"
while [ $counter -lt "${#commandsArray[@]}" ] || [ ${#pidsArray[@]} -gt 0 ]; do
while [ $counter -lt "${#commandsArray[@]}" ] && [ ${#pidsArray[@]} -lt $numberOfProcesses ]; do
Logger "Running command [${commandsArray[$counter]}]." "DEBUG"
eval "${commandsArray[$counter]}" &
pid=$!
pidsArray+=($pid)
commandsArrayPid[$pid]="${commandsArray[$counter]}"
counter=$((counter+1))
done
newPidsArray=()
for pid in "${pidsArray[@]}"; do
# Handle uninterruptible sleep state or zombies by ommiting them from running process array (How to kill that is already dead ? :)
if kill -0 $pid > /dev/null 2>&1; then
pidState=$(ps -p$pid -o state= 2 > /dev/null)
if [ "$pidState" != "D" ] && [ "$pidState" != "Z" ]; then
newPidsArray+=($pid)
fi
else
# pid is dead, get it's exit code from wait command
wait $pid
retval=$?
if [ $retval -ne 0 ]; then
Logger "Command [${commandsArrayPid[$pid]}] failed with exit code [$retval]." "ERROR"
retvalAll=$((retvalAll+1))
fi
fi
done
pidsArray=("${newPidsArray[@]}")
# Trivial wait time for bash to not eat up all CPU
sleep $SLEEP_TIME
done
return $retvalAll
}
function CleanUp { function CleanUp {
__CheckArguments 0 $# ${FUNCNAME[0]} "$@" #__WITH_PARANOIA_DEBUG __CheckArguments 0 $# ${FUNCNAME[0]} "$@" #__WITH_PARANOIA_DEBUG
@ -877,7 +959,7 @@ function RunLocalCommand {
local hard_max_time="${2}" # Max time to wait for command to compleet local hard_max_time="${2}" # Max time to wait for command to compleet
__CheckArguments 2 $# ${FUNCNAME[0]} "$@" #__WITH_PARANOIA_DEBUG __CheckArguments 2 $# ${FUNCNAME[0]} "$@" #__WITH_PARANOIA_DEBUG
if [ $_DRYRUN -ne 0 ]; then if [ $_DRYRUN == true ]; then
Logger "Dryrun: Local command [$command] not run." "NOTICE" Logger "Dryrun: Local command [$command] not run." "NOTICE"
return 0 return 0
fi fi
@ -892,7 +974,7 @@ function RunLocalCommand {
Logger "Command failed." "ERROR" Logger "Command failed." "ERROR"
fi fi
if [ $_VERBOSE -eq 1 ] || [ $retval -ne 0 ]; then if [ $_VERBOSE == true ] || [ $retval -ne 0 ]; then
Logger "Command output:\n$(cat $RUN_DIR/$PROGRAM.${FUNCNAME[0]}.$SCRIPT_PID)" "NOTICE" Logger "Command output:\n$(cat $RUN_DIR/$PROGRAM.${FUNCNAME[0]}.$SCRIPT_PID)" "NOTICE"
fi fi
@ -910,7 +992,7 @@ function RunRemoteCommand {
CheckConnectivity3rdPartyHosts CheckConnectivity3rdPartyHosts
CheckConnectivityRemoteHost CheckConnectivityRemoteHost
if [ $_DRYRUN -ne 0 ]; then if [ $_DRYRUN == true ]; then
Logger "Dryrun: Local command [$command] not run." "NOTICE" Logger "Dryrun: Local command [$command] not run." "NOTICE"
return 0 return 0
fi fi
@ -927,7 +1009,7 @@ function RunRemoteCommand {
Logger "Command failed." "ERROR" Logger "Command failed." "ERROR"
fi fi
if [ -f "$RUN_DIR/$PROGRAM.${FUNCNAME[0]}.$SCRIPT_PID" ] && ([ $_VERBOSE -eq 1 ] || [ $retval -ne 0 ]) if [ -f "$RUN_DIR/$PROGRAM.${FUNCNAME[0]}.$SCRIPT_PID" ] && ([ $_VERBOSE == true ] || [ $retval -ne 0 ])
then then
Logger "Command output:\n$(cat $RUN_DIR/$PROGRAM.${FUNCNAME[0]}.$SCRIPT_PID)" "NOTICE" Logger "Command output:\n$(cat $RUN_DIR/$PROGRAM.${FUNCNAME[0]}.$SCRIPT_PID)" "NOTICE"
fi fi
@ -1001,7 +1083,7 @@ function CheckConnectivity3rdPartyHosts {
if [ "$_PARANOIA_DEBUG" != "yes" ]; then # Do not loose time in paranoia debug if [ "$_PARANOIA_DEBUG" != "yes" ]; then # Do not loose time in paranoia debug
if [ "$REMOTE_3RD_PARTY_HOSTS" != "" ]; then if [ "$REMOTE_3RD_PARTY_HOSTS" != "" ]; then
remote_3rd_party_success=0 remote_3rd_party_success=false
for i in $REMOTE_3RD_PARTY_HOSTS for i in $REMOTE_3RD_PARTY_HOSTS
do do
eval "$PING_CMD $i > /dev/null 2>&1" & eval "$PING_CMD $i > /dev/null 2>&1" &
@ -1009,11 +1091,11 @@ function CheckConnectivity3rdPartyHosts {
if [ $? != 0 ]; then if [ $? != 0 ]; then
Logger "Cannot ping 3rd party host $i" "NOTICE" Logger "Cannot ping 3rd party host $i" "NOTICE"
else else
remote_3rd_party_success=1 remote_3rd_party_success=true
fi fi
done done
if [ $remote_3rd_party_success -ne 1 ]; then if [ $remote_3rd_party_success == false ]; then
Logger "No remote 3rd party host responded to ping. No internet ?" "ERROR" Logger "No remote 3rd party host responded to ping. No internet ?" "ERROR"
return 1 return 1
else else
@ -1044,14 +1126,14 @@ function __CheckArguments {
# In order to avoid this, we need to iterate over ${4} and count # In order to avoid this, we need to iterate over ${4} and count
local iterate=4 local iterate=4
local fetchArguments=1 local fetchArguments=true
local argList="" local argList=""
local countedArguments local countedArguments
while [ $fetchArguments -eq 1 ]; do while [ $fetchArguments == true ]; do
cmd='argument=${'$iterate'}' cmd='argument=${'$iterate'}'
eval $cmd eval $cmd
if [ "$argument" = "" ]; then if [ "$argument" = "" ]; then
fetchArguments=0 fetchArguments=false
else else
argList="$arg_list [Argument $(($iterate-3)): $argument]" argList="$arg_list [Argument $(($iterate-3)): $argument]"
iterate=$(($iterate+1)) iterate=$(($iterate+1))
@ -1193,7 +1275,7 @@ function PreInit {
## Set rsync default arguments ## Set rsync default arguments
RSYNC_ARGS="-rltD" RSYNC_ARGS="-rltD"
if [ "$_DRYRUN" -eq 1 ]; then if [ "$_DRYRUN" == true ]; then
RSYNC_DRY_ARG="-n" RSYNC_DRY_ARG="-n"
DRY_WARNING="/!\ DRY RUN" DRY_WARNING="/!\ DRY RUN"
else else