ARGOMENTO:

#!/bin/bash

#UTILIZZO: fare una scorta di N tasks del progetto Rosetta@home, sospendere manualmente tutti i task, quindi lanciare lo script

interval=300
nthreads=8
maxcovid=4 # numero massimo di tasks COVID-19 da eseguire senza avere problemi di ram
name_pattern='^[ ]\+name:[ ]'
project_pattern='^[ ]\+project[ ]URL:[ ]'
state_pattern='^[ ]\+state:[ ]'
active_task_state_pattern='^[ ]\+active_task_state:[ ]'
boinccmd="boinccmd" # for service
#boinccmd="./boinccmd" # for standalone
#path_boinc_client="/your/boinc/client/path" # for standalone
#cd $path_boinc_client # for standalone

if [[ -z `echo $($boinccmd --get_tasks)` ]]
then
	echo "Error: BOINC not running"
	echo "Exiting..."
	exit
fi

while true
do
	#reset	
	counter0=0
	counter1=0
	counter2=0
	counter3=0
	counter4=0
	counter5=0
	counter6=0

	running_tasks=$( $boinccmd --get_simple_gui_info )
	tasks=$( $boinccmd --get_tasks )

	running_task_name=( $(echo "${running_tasks}" | grep -e "${name_pattern}" | sed -e "s/${name_pattern}//" ))
	active_task_state=( $(echo "${running_tasks}" | grep -e "${active_task_state_pattern}" | sed -e "s/${active_task_state_pattern}//" ))
	runningtaskslength=${#running_task_name[@]}
	nrunningtasks=${#active_task_state[@]}

	if [[ $nrunningtasks == $nthreads ]]
	then
		echo "$nthreads tasks running, nothing to do"
		sleep $interval
		continue
	fi

	for (( i = $((runningtaskslength-1)); i > $((runningtaskslength-1-nrunningtasks)); i-- ))
	do
		if [[ ${running_task_name[$i]} == *"COVID-19"* ]]
		then
			counter0=$((counter0+1))
		else
			counter1=$((counter1+1))
		fi
	done
	covidtorun=$((maxcovid-counter0))
	normaltorun=$((nthreads-maxcovid-counter1))

	echo $counter0" COVID-19 tasks running"
	echo $counter1" normal tasks running"
	echo $covidtorun" COVID-19 tasks to run"
	echo $normaltorun" normal tasks to run"

	unset active_task_state
	task_name=( $(echo "${tasks}" | grep -e "${name_pattern}" | sed -e "s/${name_pattern}//" ))
	project_url=( $(echo "${tasks}" | grep -e "${project_pattern}" | sed -e "s/${project_pattern}//" ))
	state=( $(echo "${tasks}" | grep -e "${state_pattern}" | sed -e "s/${state_pattern}//" ))
	active_task_state=( $(echo "${tasks}" | grep -e "${active_task_state_pattern}" | sed -e "s/${active_task_state_pattern}//" ))
	ntasks=${#task_name[@]}

	for (( i = 0; i < ntasks; i++ ))
	do
		if [[ ${state[$i]} == "uploading" ]]
		then
			counter2=$((counter2+1))
			continue
		fi
		if [[ ${state[$i]} == "compute" ]] #compute error
		then
			counter5=$((counter5+1))
			state=( "${state[@]:0:$((i-1))}" "${state[@]:$i}" ) #state[i+1]=="error"; just removing it
			continue
		fi
		if [[ ${state[$i]} == "downloaded" && ${active_task_state[$i]} == "UNINITIALIZED" ]]
		then
			if [[ ${task_name[$i]} == *"_C1_"* ]]
			then
				counter6=$((counter6+1))
				continue # skipping it; to be run at the end, after COVID-19 tasks finished
			fi
			if [[ ${task_name[$i]} == *"COVID-19"* ]]
			then
				if [[ $counter3 -lt $covidtorun ]]
				then
					$boinccmd --task ${project_url[$i]} ${task_name[$i]} resume
					echo $(date '+%d/%m/%Y %H:%M:%S')" - "${task_name[$i]}" resumed"
				fi
				counter3=$((counter3+1))
			else
				if [[ $counter4 -lt $normaltorun ]]
				then
					$boinccmd --task ${project_url[$i]} ${task_name[$i]} resume
					echo $(date '+%d/%m/%Y %H:%M:%S')" - "${task_name[$i]}" resumed"
				fi
				counter4=$((counter4+1))
			fi
		fi
	done
	echo "Number of remaining normal tasks: "$counter4
	echo "Number of remaining COVID-19 tasks: "$counter3
	echo "Number of remaining C1 tasks: "$counter6
	echo "Number of uploading tasks: "$counter2
	echo "Number of faulty tasks: "$counter5

	if [[ $counter3 == 0 ]] # No COVID-19 tasks, no ram problems => resume all tasks
	then
		for (( i = 0; i < ntasks; i++ ))
		do
			if [[ ${state[$i]} == "downloaded" && ${active_task_state[$i]} == "UNINITIALIZED" ]]
			then
				$boinccmd --task ${project_url[$i]} ${task_name[$i]} resume
				echo $(date '+%d/%m/%Y %H:%M:%S')" - "${task_name[$i]}" resumed"
			fi
		done
		echo "All tasks resumed!"
		break
	fi

	sleep $interval
done