[EVA-2020-02.git] / exec / bkgpslog

#!/bin/bash

# Desc: Records gps data until midnight
# Author: Steven Baltakatei Sandoval; License: GPLv3+
# Usage: bkgpslog --output [output dir]

#==BEGIN Define script parameters==
PATH="/opt/bktei:$PATH"         # Add default baltakatei script install directory to PATH (necessary for other bk scripts)
SCRIPT_HOSTNAME=$(hostname)     # Save hostname of system running this script.
SCRIPT_VERSION="bkgpslog 0.0.1" # Define version of script.
SCRIPT_TIME_SHORT="$(date +%Y%m%dT%H%M%S%z)" # Save current date & time in ISO-8601 format.
SCRIPT_DATE_SHORT="$(date +%Y%m%d)"          # Save current date in ISO-8601 format.

declare -Ag appRollCall # Associative array for storing app status
declare -Ag fileRollCall # Associative array for storing file status
declare -Ag dirRollCall # Associative array for storing dir status

#===BEGIN Declare local script functions===
checkapp() {
    # Desc: If arg is a command, save result in assoc array 'appRollCall'
    # Usage: checkapp arg1 arg2 arg3 ...
    # Input: global assoc. array 'appRollCall'
    # Output: adds/updates key(value) to global assoc array 'appRollCall'
    local returnState    
    #echo "DEBUG:$(date +%S.%N)..Starting checkapp function."
    #echo "DEBUG:args: $@"
    #echo "DEBUG:returnState:$returnState"

    #===Process Args===
    for arg in "$@"; do
	#echo "DEBUG:processing arg:$arg"
	if command -v $arg 1>/dev/null 2>&1; then # Check if arg is a valid command
	    appRollCall[$arg]="true";
	    #echo "DEBUG:appRollCall[$arg]:"${appRollCall[$arg]}
	    if ! [ "$returnState" = "false" ]; then returnState="true"; fi
	else
	    appRollCall[$arg]="false"; returnState="false";
	fi
    done
    
    #for key in "${!appRollCall[@]}"; do echo "DEBUG:$key => ${appRollCall[$key]}"; done
    #echo "DEBUG:evaluating returnstate. returnState:"$returnState

    #===Determine function return code===
    if [ "$returnState" = "true" ]; then
	#echo "DEBUG:checkapp returns true for $arg";
	return 0;
    else
	#echo "DEBUG:checkapp returns false for $arg";
	return 1;
    fi
} # Check that app exists
checkfile() {
    # Desc: If arg is a file path, save result in assoc array 'fileRollCall'
    # Usage: checkfile arg1 arg2 arg3 ...
    # Input: global assoc. array 'fileRollCall'
    # Output: adds/updates key(value) to global assoc array 'fileRollCall';
    # Output: returns 0 if app found, 1 otherwise
    local returnState

    #===Process Args===
    for arg in "$@"; do
	#echo "DEBUG:processing arg:$arg"
	if [ -f "$arg" ]; then
	    fileRollCall["$arg"]="true";
	    #echo "DEBUG:fileRollCall[\"$arg\"]:"${fileRollCall["$arg"]}
	    if ! [ "$returnState" = "false" ]; then returnState="true"; fi
	else
	    fileRollCall["$arg"]="false"; returnState="false";
	fi
    done

    #for key in "${!fileRollCall[@]}"; do echo "DEBUG:fileRollCall key [$key] is:${fileRollCall[$key]}"; done
    #echo "DEBUG:evaluating returnstate. returnState:"$returnState
    
    #===Determine function return code===
    if [ "$returnState" = "true" ]; then
	#echo "DEBUG:checkapp returns true for $arg";
	return 0;
    else
	#echo "DEBUG:checkapp returns false for $arg";
	return 1;
    fi
} # Check that file exists
checkdir() {
    # Desc: If arg is a dir path, save result in assoc array 'dirRollCall'
    # Usage: checkdir arg1 arg2 arg3 ...
    # Input: global assoc. array 'dirRollCall'
    # Output: adds/updates key(value) to global assoc array 'dirRollCall';
    # Output: returns 0 if app found, 1 otherwise
    local returnState

    #===Process Args===
    for arg in "$@"; do
	#echo "DEBUG:processing arg:$arg"
	if [ -d "$arg" ]; then
	    dirRollCall["$arg"]="true";
	    #echo "DEBUG:dirRollCall[\"$arg\"]:"${dirRollCall["$arg"]}
	    if ! [ "$returnState" = "false" ]; then returnState="true"; fi
	else
	    dirRollCall["$arg"]="false"; returnState="false";
	fi
    done

    #for key in "${!dirRollCall[@]}"; do echo "DEBUG:dirRollCall key [$key] is:${dirRollCall[$key]}"; done
    #echo "DEBUG:evaluating returnstate. returnState:"$returnState
    
    #===Determine function return code===
    if [ "$returnState" = "true" ]; then
	#echo "DEBUG:checkapp returns true for $arg";
	return 0;
    else
	#echo "DEBUG:checkapp returns false for $arg";
	return 1;
    fi
} # Check that dir exists

# Yell, Die, Try Three-Fingered Claw technique
# Ref/Attrib: https://stackoverflow.com/a/25515370
yell() { echo "$0: $*" >&2; }
die() { yell "$*"; exit 111; }
try() { "$@" || die "cannot $*"; }

echoerr() {
    echo "$@" 1>&2; # Define stderr echo function.
} # Define stderr message function.
showUsage() {
    echoerr "USAGE:"
    echoerr "    bkgpslog.sh [ options ]"
    echoerr
    echoerr "OPTIONS:"
    echoerr "    -h, --help"
    echoerr "            Display help information."
    echoerr
    echoerr "    --version"
    echoerr "            Display script version."
    echoerr
    echoerr "    -v, --verbose"
    echoerr "            Display debugging info."
    echoerr
    echoerr "    -o, --output [ directory ]"
    echoerr "            Specify output directory to save logs."
} # Display information on how to use this script.
showVersion() {
    echoerr "$SCRIPT_VERSION"
} # Display script version.
vbm() {
    if [ $OPTION_VERBOSE -eq "true" ]; then
	echoerr "$@"
    fi
} # Verbose message display function.
processArguments() {
    while [ ! $# -eq 0 ]; do   # While number of arguments ($#) is not (!) equal to (-eq) zero (0).
	echoerr "DEBUG:Starting processArguments while loop."
	echoerr "DEBUG:Provided arguments are:""$@"
	case "$1" in
	    --h | --help) showUsage; exit 1;; # Display usage.
	    --version) showVersion; exit 1;; # Show version
	    --v | --verbose) OPTION_VERBOSE="true"; vbm "DEBUG:Verbose mode enabled.";; # Enable verbose mode.
	    --o | --output) if [ -d "$2" ]; then DIROUT="$2"; fi ;; # Define output directory.
	    *) echoerr "ERROR: Unrecognized argument."; exit 1;; # Handle unrecognized options.
	esac
	shift
    done
} # Argument Processing
timeUntilMidnight(){
    # Desc: Report seconds until midnight
    # Output: stdout: integer seconds until midnight
    # Output: exit code 0 if stdout > 0; 1 if stdout = 0; 2 if stdout < 0
    # Usage: timeUntilMidnight
    # Usage: if ! myTTL="$(timeUntilMidnight)"; then yell "ERROR in if statement"; exit 1; fi
    local returnState
    TIME_CURRENT="$(date --iso-8601=seconds)" ; # Produce `date`-parsable current timestamp with resolution of 1 second.
    TIME_CURRENT_SHORT="$(date -d "$TIME_CURRENT" +%Y%m%dT%H%M%S%z)" # Produce separator-less current timestamp with resolution 1 second.
    DATE_CURRENT="$(date -d "$TIME_CURRENT" --iso-8601=date)" ; # Produce `date`-parsable current timestamp with resolution of 1 day.
    DATE_CURRENT_SHORT="$(date -d "$TIME_CURRENT" +%Y%m%d)" ; # Produce separator-less current timestamp with resolution 1 day.
    DATE_TOMORROW="$(date -d "$TIME_CURRENT next day" --iso-8601=date)" ; # Produce timestamp of tomorrow's date (res. 1 day).
    TIME_NEXT_MIDNIGHT="$(date -d "$DATE_TOMORROW" --iso-8601=seconds)" ; # Produce `date`-parsable timestamp of closest future midnight (res. 1 second).
    SECONDS_UNTIL_NEXT_MIDNIGHT="$(( $(date +%s -d "$TIME_NEXT_MIDNIGHT") - $(date +%s -d "$TIME_CURRENT") ))" ; # Calculate seconds until closest future midnight (res. 1 second).
    if [[ "$SECONDS_UNTIL_NEXT_MIDNIGHT" -gt 0 ]]; then
	returnState="true";
    elif [[ "$SECONDS_UNTIL_NEXT_MIDNIGHT" -eq 0 ]]; then
	returnState="WARNING_ZERO";
	yell "WARNING:Reported time until midnight exactly zero.";
    elif [[ "$SECONDS_UNTIL_NEXT_MIDNIGHT" -lt 0 ]]; then
	returnState="WARNING_NEGATIVE";
	yell "WARNING:Reported time until midnight is negative.";
    fi

    try echo "$SECONDS_UNTIL_NEXT_MIDNIGHT"; # Report
    
    #===Determine function return code===
    if [[ "$returnState" = "true" ]]; then
	return 0;
    elif [[ "$returnState" = "WARNING_ZERO" ]]; then
	return 1;
    elif [[ "$returnState" = "WARNING_NEGATIVE" ]]; then
	return 2;
    fi
} # Report seconds until next midnight
dateTimeShort(){
    # Desc: Timestamp without separators (YYYYmmddTHHMMSS+zzzz)
    # Usage: dateTimeShort
    # Output: stdout: timestamp (ISO-8601, no separators)
    TIME_CURRENT="$(date --iso-8601=seconds)" ; # Produce `date`-parsable current timestamp with resolution of 1 second.
    TIME_CURRENT_SHORT="$(date -d "$TIME_CURRENT" +%Y%m%dT%H%M%S%z)"; # Produce separator-less current timestamp with resolution 1 second.
    echo "$TIME_CURRENT_SHORT";
} # Get date&time without separators
main() {
    processArguments # Process arguments.
    if checkapp gpspipe && checkdir "$DIROUT"; then
	# Determine output file paths
	FILEOUT_NMEA="$(dateTimeShort)".."$SCRIPT_HOSTNAME"_location.nmea ;
	#FILEOUT_GPX="" ;
	#FILEOUT_KML="" ;

	# Determine script lifespan (note: exit if <= 0 since 'timeout' runs forever if provided "0s".
	#if ! scriptTTL="$(timeUntilMidnight)"; then yell "ERROR: timeUntilMidnight exit code $?"; exit 1; fi 
	scriptTTL="60"; #DEBUG DEBUG DEBUG DEBUG	
        
	# Determine buffer lifespan
	bufferTTL="15";

	# Record gps data until life ends
	declare debugCounter; debugCounter="0"
	while [[ "$SECONDS" -lt "$scriptTTL" ]]; do
	    ((debugCounter++))
	    timeout "$bufferTTL""s" gpspipe -r 1>> "$DIROUT"/"$FILEOUT_NMEA""$debugCounter"
	    echo "do stuff" 1>&2;
	done
    fi
} # Main function.
#===END Declare local script functions===
#==END Define script parameters==


#==BEGIN Perform work and exit==
main "$@" # Run main function.
exit 0;
#==END Perform work and exit==


    #gpspipe -r -d -l -o "$DIROUT1"/"$FILEOUT1" ;
Commit	Line	Data
032f4b05 SBS	1	#!/bin/bash
032f4b05 SBS	2
8fbca23d SBS	3	# Desc: Records gps data until midnight
	4	# Author: Steven Baltakatei Sandoval; License: GPLv3+
	5	# Usage: bkgpslog --output [output dir]
032f4b05	6
8fbca23d	7	#==BEGIN Define script parameters==
032f4b05 SBS	8	PATH="/opt/bktei:$PATH" # Add default baltakatei script install directory to PATH (necessary for other bk scripts)
	9	SCRIPT_HOSTNAME=$(hostname) # Save hostname of system running this script.
	10	SCRIPT_VERSION="bkgpslog 0.0.1" # Define version of script.
	11	SCRIPT_TIME_SHORT="$(date +%Y%m%dT%H%M%S%z)" # Save current date & time in ISO-8601 format.
	12	SCRIPT_DATE_SHORT="$(date +%Y%m%d)" # Save current date in ISO-8601 format.
8fbca23d SBS	13
	14	declare -Ag appRollCall # Associative array for storing app status
	15	declare -Ag fileRollCall # Associative array for storing file status
	16	declare -Ag dirRollCall # Associative array for storing dir status
	17
	18	#===BEGIN Declare local script functions===
	19	checkapp() {
	20	# Desc: If arg is a command, save result in assoc array 'appRollCall'
	21	# Usage: checkapp arg1 arg2 arg3 ...
	22	# Input: global assoc. array 'appRollCall'
	23	# Output: adds/updates key(value) to global assoc array 'appRollCall'
	24	local returnState
	25	#echo "DEBUG:$(date +%S.%N)..Starting checkapp function."
	26	#echo "DEBUG:args: $@"
	27	#echo "DEBUG:returnState:$returnState"
	28
	29	#===Process Args===
	30	for arg in "$@"; do
	31	#echo "DEBUG:processing arg:$arg"
	32	if command -v $arg 1>/dev/null 2>&1; then # Check if arg is a valid command
	33	appRollCall[$arg]="true";
	34	#echo "DEBUG:appRollCall[$arg]:"${appRollCall[$arg]}
	35	if ! [ "$returnState" = "false" ]; then returnState="true"; fi
	36	else
	37	appRollCall[$arg]="false"; returnState="false";
	38	fi
	39	done
	40
	41	#for key in "${!appRollCall[@]}"; do echo "DEBUG:$key => ${appRollCall[$key]}"; done
	42	#echo "DEBUG:evaluating returnstate. returnState:"$returnState
	43
	44	#===Determine function return code===
	45	if [ "$returnState" = "true" ]; then
	46	#echo "DEBUG:checkapp returns true for $arg";
	47	return 0;
	48	else
	49	#echo "DEBUG:checkapp returns false for $arg";
	50	return 1;
	51	fi
	52	} # Check that app exists
	53	checkfile() {
	54	# Desc: If arg is a file path, save result in assoc array 'fileRollCall'
	55	# Usage: checkfile arg1 arg2 arg3 ...
	56	# Input: global assoc. array 'fileRollCall'
	57	# Output: adds/updates key(value) to global assoc array 'fileRollCall';
	58	# Output: returns 0 if app found, 1 otherwise
	59	local returnState
	60
	61	#===Process Args===
	62	for arg in "$@"; do
	63	#echo "DEBUG:processing arg:$arg"
	64	if [ -f "$arg" ]; then
	65	fileRollCall["$arg"]="true";
	66	#echo "DEBUG:fileRollCall[\"$arg\"]:"${fileRollCall["$arg"]}
	67	if ! [ "$returnState" = "false" ]; then returnState="true"; fi
	68	else
	69	fileRollCall["$arg"]="false"; returnState="false";
	70	fi
	71	done
	72
	73	#for key in "${!fileRollCall[@]}"; do echo "DEBUG:fileRollCall key [$key] is:${fileRollCall[$key]}"; done
	74	#echo "DEBUG:evaluating returnstate. returnState:"$returnState
	75
	76	#===Determine function return code===
77	if [ "$returnState" = "true" ]; then
78	#echo "DEBUG:checkapp returns true for $arg";
79	return 0;
80	else
81	#echo "DEBUG:checkapp returns false for $arg";
82	return 1;
83	fi
84	} # Check that file exists
85	checkdir() {
86	# Desc: If arg is a dir path, save result in assoc array 'dirRollCall'
87	# Usage: checkdir arg1 arg2 arg3 ...
88	# Input: global assoc. array 'dirRollCall'
89	# Output: adds/updates key(value) to global assoc array 'dirRollCall';
90	# Output: returns 0 if app found, 1 otherwise
91	local returnState
92
93	#===Process Args===
94	for arg in "$@"; do
95	#echo "DEBUG:processing arg:$arg"
96	if [ -d "$arg" ]; then
97	dirRollCall["$arg"]="true";
98	#echo "DEBUG:dirRollCall[\"$arg\"]:"${dirRollCall["$arg"]}
99	if ! [ "$returnState" = "false" ]; then returnState="true"; fi
100	else
101	dirRollCall["$arg"]="false"; returnState="false";
102	fi
103	done
104
105	#for key in "${!dirRollCall[@]}"; do echo "DEBUG:dirRollCall key [$key] is:${dirRollCall[$key]}"; done
106	#echo "DEBUG:evaluating returnstate. returnState:"$returnState
107
108	#===Determine function return code===
109	if [ "$returnState" = "true" ]; then
110	#echo "DEBUG:checkapp returns true for $arg";
111	return 0;
112	else
113	#echo "DEBUG:checkapp returns false for $arg";
114	return 1;
115	fi
116	} # Check that dir exists
032f4b05	117
c609b9c8 SBS	118	# Yell, Die, Try Three-Fingered Claw technique
	119	# Ref/Attrib: https://stackoverflow.com/a/25515370
	120	yell() { echo "$0: $*" >&2; }
	121	die() { yell "$*"; exit 111; }
	122	try() { "$@" \|\| die "cannot $*"; }
	123
032f4b05 SBS	124	echoerr() {
	125	echo "$@" 1>&2; # Define stderr echo function.
	126	} # Define stderr message function.
	127	showUsage() {
	128	echoerr "USAGE:"
	129	echoerr " bkgpslog.sh [ options ]"
	130	echoerr
	131	echoerr "OPTIONS:"
	132	echoerr " -h, --help"
	133	echoerr " Display help information."
	134	echoerr
	135	echoerr " --version"
	136	echoerr " Display script version."
	137	echoerr
	138	echoerr " -v, --verbose"
	139	echoerr " Display debugging info."
	140	echoerr
	141	echoerr " -o, --output [ directory ]"
	142	echoerr " Specify output directory to save logs."
	143	} # Display information on how to use this script.
	144	showVersion() {
	145	echoerr "$SCRIPT_VERSION"
	146	} # Display script version.
	147	vbm() {
	148	if [ $OPTION_VERBOSE -eq "true" ]; then
	149	echoerr "$@"
	150	fi
	151	} # Verbose message display function.
	152	processArguments() {
	153	while [ ! $# -eq 0 ]; do # While number of arguments ($#) is not (!) equal to (-eq) zero (0).
	154	echoerr "DEBUG:Starting processArguments while loop."
	155	echoerr "DEBUG:Provided arguments are:""$@"
	156	case "$1" in
	157	--h \| --help) showUsage; exit 1;; # Display usage.
	158	--version) showVersion; exit 1;; # Show version
	159	--v \| --verbose) OPTION_VERBOSE="true"; vbm "DEBUG:Verbose mode enabled.";; # Enable verbose mode.
8fbca23d	160	--o \| --output) if [ -d "$2" ]; then DIROUT="$2"; fi ;; # Define output directory.
032f4b05 SBS	161	*) echoerr "ERROR: Unrecognized argument."; exit 1;; # Handle unrecognized options.
	162	esac
	163	shift
	164	done
	165	} # Argument Processing
8fbca23d SBS	166	timeUntilMidnight(){
	167	# Desc: Report seconds until midnight
	168	# Output: stdout: integer seconds until midnight
	169	# Output: exit code 0 if stdout > 0; 1 if stdout = 0; 2 if stdout < 0
	170	# Usage: timeUntilMidnight
	171	# Usage: if ! myTTL="$(timeUntilMidnight)"; then yell "ERROR in if statement"; exit 1; fi
	172	local returnState
	173	TIME_CURRENT="$(date --iso-8601=seconds)" ; # Produce `date`-parsable current timestamp with resolution of 1 second.
	174	TIME_CURRENT_SHORT="$(date -d "$TIME_CURRENT" +%Y%m%dT%H%M%S%z)" # Produce separator-less current timestamp with resolution 1 second.
	175	DATE_CURRENT="$(date -d "$TIME_CURRENT" --iso-8601=date)" ; # Produce `date`-parsable current timestamp with resolution of 1 day.
	176	DATE_CURRENT_SHORT="$(date -d "$TIME_CURRENT" +%Y%m%d)" ; # Produce separator-less current timestamp with resolution 1 day.
	177	DATE_TOMORROW="$(date -d "$TIME_CURRENT next day" --iso-8601=date)" ; # Produce timestamp of tomorrow's date (res. 1 day).
	178	TIME_NEXT_MIDNIGHT="$(date -d "$DATE_TOMORROW" --iso-8601=seconds)" ; # Produce `date`-parsable timestamp of closest future midnight (res. 1 second).
	179	SECONDS_UNTIL_NEXT_MIDNIGHT="$(( $(date +%s -d "$TIME_NEXT_MIDNIGHT") - $(date +%s -d "$TIME_CURRENT") ))" ; # Calculate seconds until closest future midnight (res. 1 second).
	180	if [[ "$SECONDS_UNTIL_NEXT_MIDNIGHT" -gt 0 ]]; then
	181	returnState="true";
	182	elif [[ "$SECONDS_UNTIL_NEXT_MIDNIGHT" -eq 0 ]]; then
	183	returnState="WARNING_ZERO";
	184	yell "WARNING:Reported time until midnight exactly zero.";
	185	elif [[ "$SECONDS_UNTIL_NEXT_MIDNIGHT" -lt 0 ]]; then
	186	returnState="WARNING_NEGATIVE";
	187	yell "WARNING:Reported time until midnight is negative.";
	188	fi
032f4b05	189
8fbca23d SBS	190	try echo "$SECONDS_UNTIL_NEXT_MIDNIGHT"; # Report
	191
	192	#===Determine function return code===
	193	if [[ "$returnState" = "true" ]]; then
	194	return 0;
	195	elif [[ "$returnState" = "WARNING_ZERO" ]]; then
	196	return 1;
	197	elif [[ "$returnState" = "WARNING_NEGATIVE" ]]; then
	198	return 2;
	199	fi
	200	} # Report seconds until next midnight
	201	dateTimeShort(){
	202	# Desc: Timestamp without separators (YYYYmmddTHHMMSS+zzzz)
	203	# Usage: dateTimeShort
	204	# Output: stdout: timestamp (ISO-8601, no separators)
	205	TIME_CURRENT="$(date --iso-8601=seconds)" ; # Produce `date`-parsable current timestamp with resolution of 1 second.
	206	TIME_CURRENT_SHORT="$(date -d "$TIME_CURRENT" +%Y%m%dT%H%M%S%z)"; # Produce separator-less current timestamp with resolution 1 second.
	207	echo "$TIME_CURRENT_SHORT";
	208	} # Get date&time without separators
032f4b05 SBS	209	main() {
032f4b05 SBS	210	processArguments # Process arguments.
8fbca23d SBS	211	if checkapp gpspipe && checkdir "$DIROUT"; then
	212	# Determine output file paths
	213	FILEOUT_NMEA="$(dateTimeShort)".."$SCRIPT_HOSTNAME"_location.nmea ;
	214	#FILEOUT_GPX="" ;
	215	#FILEOUT_KML="" ;
032f4b05	216
8fbca23d SBS	217	# Determine script lifespan (note: exit if <= 0 since 'timeout' runs forever if provided "0s".
	218	#if ! scriptTTL="$(timeUntilMidnight)"; then yell "ERROR: timeUntilMidnight exit code $?"; exit 1; fi
	219	scriptTTL="60"; #DEBUG DEBUG DEBUG DEBUG
	220
	221	# Determine buffer lifespan
	222	bufferTTL="15";
032f4b05	223
8fbca23d SBS	224	# Record gps data until life ends
	225	declare debugCounter; debugCounter="0"
	226	while [[ "$SECONDS" -lt "$scriptTTL" ]]; do
	227	((debugCounter++))
	228	timeout "$bufferTTL""s" gpspipe -r 1>> "$DIROUT"/"$FILEOUT_NMEA""$debugCounter"
	229	echo "do stuff" 1>&2;
	230	done
	231	fi
	232	} # Main function.
	233	#===END Declare local script functions===
	234	#==END Define script parameters==
032f4b05 SBS	235
032f4b05 SBS	236
8fbca23d SBS	237	#==BEGIN Perform work and exit==
	238	main "$@" # Run main function.
	239	exit 0;
	240	#==END Perform work and exit==
032f4b05 SBS	241
032f4b05 SBS	242
032f4b05 SBS	243
032f4b05 SBS	244	#gpspipe -r -d -l -o "$DIROUT1"/"$FILEOUT1" ;