#!/bin/bash
# openrefine-batch-docker.sh, Felix Lohmeier, v1.15, 2021-01-04
# https://github.com/felixlohmeier/openrefine-batch

# check system requirements
DOCKER="$(command -v docker 2> /dev/null)"
if [ -z "$DOCKER" ] ; then
    echo 1>&2 "This action requires you to have 'docker' installed and present in your PATH. You can download it for free at http://www.docker.com/"
    exit 1
fi
DOCKERINFO="$(docker info 2>/dev/null | grep 'Server Version')"
if [ -z "$DOCKERINFO" ]
then
    echo "command 'docker info' failed, trying again with sudo..."
    DOCKERINFO="$(sudo docker info 2>/dev/null | grep 'Server Version')"
    echo "OK"
    docker=(sudo docker)
    if [ -z "$DOCKERINFO" ] ; then
        echo 1>&2 "This action requires you to start the docker daemon. Try 'sudo systemctl start docker' or 'sudo start docker'. If the docker daemon is already running then maybe some security privileges are missing to run docker commands.'"
        exit 1
    fi
else
    docker=(docker)
fi

# help screen
function usage () {
    cat <<EOF
Usage: ./openrefine-batch-docker.sh [-a INPUTDIR] [-b TRANSFORMDIR] [-c OUTPUTDIR] ...

== basic arguments ==
    -a INPUTDIR      path to directory with source files (leave empty to transform only ; multiple files may be imported into a single project by providing a zip or tar.gz archive, cf. https://github.com/OpenRefine/OpenRefine/wiki/Importers )
    -b TRANSFORMDIR  path to directory with OpenRefine transformation rules (json files, cf. http://kb.refinepro.com/2012/06/google-refine-json-and-my-notepad-or.html ; leave empty to transform only)
    -c OUTPUTDIR     path to directory for exported files (and OpenRefine workspace)

== options ==
    -d CROSSDIR      path to directory with additional OpenRefine projects (will be copied to workspace before transformation step to support the cross function, cf. https://github.com/OpenRefine/OpenRefine/wiki/GREL-Other-Functions )
    -e EXPORTFORMAT  (csv, tsv, html, xls, xlsx, ods)
    -f INPUTFORMAT   (csv, tsv, xml, json, line-based, fixed-width, xlsx, ods)
    -i INPUTOPTIONS  several options provided by openrefine-client, see below...
    -m RAM           maximum RAM for OpenRefine java heap space (default: 2048M)
    -t TEMPLATING    several options for templating export, see below...
    -v VERSION       OpenRefine version (3.4.1, 3.4, 3.3, 3.2, 3.1, 3.0, 2.8, 2.7, ...; default: 3.4.1)
    -E               do NOT export files
    -R               do NOT restart OpenRefine after each transformation (e.g. config file)
    -X               do NOT restart OpenRefine after each project (e.g. input file)
    -h               displays this help screen

== inputoptions (mandatory for xml, json, fixed-width, xslx, ods) ==
    -i recordPath=RECORDPATH (xml, json): please provide path in multiple arguments without slashes, e.g. /collection/record/ should be entered like this: -i recordPath=collection -i recordPath=record, default xml: record, default json: _ _
    -i columnWidths=COLUMNWIDTHS (fixed-width): please provide widths separated by comma (e.g. 7,5)
    -i sheets=SHEETS (xls, xlsx, ods): please provide sheets separated by comma (e.g. 0,1), default: 0 (first sheet)

== more inputoptions (optional, only together with inputformat) ==
    -i projectName=PROJECTNAME (all formats), default: filename
    -i limit=LIMIT (all formats), default: -1
    -i includeFileSources=true/false (all formats), default: false
    -i trimStrings=true/false (xml, json), default: false
    -i storeEmptyStrings=true/false (xml, json), default: true
    -i guessCellValueTypes=true/false (xml, csv, tsv, fixed-width, json), default: false
    -i encoding=ENCODING (csv, tsv, line-based, fixed-width), please provide short encoding name (e.g. UTF-8)
    -i ignoreLines=IGNORELINES (csv, tsv, line-based, fixed-width, xls, xlsx, ods), default: -1
    -i headerLines=HEADERLINES (csv, tsv, fixed-width, xls, xlsx, ods), default: 1, default fixed-width: 0
    -i skipDataLines=true/false (csv, tsv, line-based, fixed-width, xls, xlsx, ods), default: 0, default line-based: -1
    -i storeBlankRows=true/false (csv, tsv, line-based, fixed-width, xls, xlsx, ods), default: true
    -i processQuotes=true/false (csv, tsv), default: true
    -i storeBlankCellsAsNulls=true/false (csv, tsv, line-based, fixed-width, xls, xlsx, ods), default: true
    -i linesPerRow=LINESPERROW (line-based), default: 1

== templating options (alternative exportformat) ==
    -t template=TEMPLATE (mandatory; (big) text string that you enter in the *row template* textfield in the export/templating menu in the browser app)
    -t mode=row-based/record-based (engine mode, default: row-based)
    -t prefix=PREFIX (text string that you enter in the *prefix* textfield in the browser app)
    -t rowSeparator=ROWSEPARATOR (text string that you enter in the *row separator* textfield in the browser app)
    -t suffix=SUFFIX (text string that you enter in the *suffix* textfield in the browser app)
    -t filterQuery=REGEX (Simple RegEx text filter on filterColumn, e.g. ^12015$)
    -t filterColumn=COLUMNNAME (column name for filterQuery, default: name of first column)
    -t facets=FACETS (facets config in json format, may be extracted with browser dev tools in browser app)
    -t splitToFiles=true/false (will split each row/record into a single file; it specifies a presumably unique character series for splitting; prefix and suffix will be applied to all files
    -t suffixById=true/false (enhancement option for splitToFiles; will generate filename-suffix from values in key column)

== examples ==

download example data

wget https://github.com/opencultureconsulting/openrefine-batch/archive/master.zip
unzip master.zip openrefine-batch-master/examples/*
mv openrefine-batch-master/examples .
rm -f master.zip

example 1 (input, transform, export to tsv)

./openrefine-batch-docker.sh \
-a examples/powerhouse-museum/input/ \
-b examples/powerhouse-museum/config/ \
-c examples/powerhouse-museum/output/ \
-f tsv \
-i processQuotes=false \
-i guessCellValueTypes=true \
-RX

example 2 (input, transform, templating export)

./openrefine-batch-docker.sh -a examples/powerhouse-museum/input/ -b examples/powerhouse-museum/config/ -c examples/powerhouse-museum/output/ -f tsv -i processQuotes=false -i guessCellValueTypes=true -RX -t template='{ "Record ID" : {{jsonize(cells["Record ID"].value)}}, "Object Title" : {{jsonize(cells["Object Title"].value)}}, "Registration Number" : {{jsonize(cells["Registration Number"].value)}}, "Description." : {{jsonize(cells["Description."].value)}}, "Marks" : {{jsonize(cells["Marks"].value)}}, "Production Date" : {{jsonize(cells["Production Date"].value)}}, "Provenance (Production)" : {{jsonize(cells["Provenance (Production)"].value)}}, "Provenance (History)" : {{jsonize(cells["Provenance (History)"].value)}}, "Categories" : {{jsonize(cells["Categories"].value)}}, "Persistent Link" : {{jsonize(cells["Persistent Link"].value)}}, "Height" : {{jsonize(cells["Height"].value)}}, "Width" : {{jsonize(cells["Width"].value)}}, "Depth" : {{jsonize(cells["Depth"].value)}}, "Diameter" : {{jsonize(cells["Diameter"].value)}}, "Weight" : {{jsonize(cells["Weight"].value)}}, "License info" : {{jsonize(cells["License info"].value)}} }' -t rowSeparator=',' -t prefix='{ "rows" : [ ' -t suffix='] }' -t splitToFiles=true
EOF
   exit 1
}

# defaults
ram="2048M"
version="3.4.1"
restartfile="true"
restarttransform="true"
export="true"
exportformat="tsv"
inputdir=/dev/null
configdir=/dev/null
crossdir=/dev/null

# check input
NUMARGS=$#
if [ "$NUMARGS" -eq 0 ]; then
  usage
fi

# get user input
options="a:b:c:d:e:f:i:m:t:v:ERXh"
while getopts $options opt; do
   case $opt in
   a )  inputdir=$(readlink -f ${OPTARG}); if [ -n "${inputdir// }" ] ; then inputfiles=($(find -L "${inputdir}"/* -type f -printf "%f\n" 2>/dev/null)); fi ;;
   b )  configdir=$(readlink -f ${OPTARG}); if [ -n "${configdir// }" ] ; then jsonfiles=($(find -L "${configdir}"/* -type f -printf "%f\n" 2>/dev/null)); fi ;;
   c )  outputdir=$(readlink -m ${OPTARG}); mkdir -p "${outputdir}" ;;
   d )  crossdir=$(readlink -f ${OPTARG}); if [ -n "${crossdir// }" ] ; then crossprojects=($(find -L "${crossdir}"/* -maxdepth 0 -type d -printf "%f\n" 2>/dev/null)); fi ;;
   e )  format="${OPTARG}" ; exportformat="${OPTARG}" ;;
   f )  format="${OPTARG}" ; inputformat="--format=${OPTARG}" ;;
   i )  inputoptions+=("--${OPTARG}") ;;
   m )  ram=${OPTARG} ;;
   t )  templating+=("--${OPTARG}") ; exportformat="txt" ;;
   v )  version=${OPTARG} ;;
   E )  export="false" ;;
   R )  restarttransform="false" ;;
   X )  restartfile="false" ;;
   h )  usage ;;
   \? ) echo 1>&2 "Unknown option: -$OPTARG"; usage; exit 1;;
   :  ) echo 1>&2 "Missing option argument for -$OPTARG"; usage; exit 1;;
   *  ) echo 1>&2 "Unimplemented option: -$OPTARG"; usage; exit 1;;
   esac
done
shift $((OPTIND - 1))

# check for mandatory options
if [ -z "$outputdir" ]; then
    echo 1>&2 "please provide path to directory for exported files (and OpenRefine workspace)"
    echo 1>&2 "example: ./openrefine-batch-docker.sh -c output/"
    exit 1
fi
if [ "$(ls -A "$outputdir" 2>/dev/null)" ];then
    echo 1>&2 "path to directory for exported files (and OpenRefine workspace) is not empty"
    echo 1>&2 "$outputdir"
    exit 1
fi
if [ "$format" = "xml" ] || [ "$format" = "json" ] && [ -z "$inputoptions" ]; then
    echo 1>&2 "error: you specified the inputformat $format but did not provide mandatory input options"
    echo 1>&2 "please provide recordpath in multiple arguments without slashes"
    echo 1>&2 "example: ./openrefine-batch-docker.sh ... -f $format -i recordPath=collection -i recordPath=record"
    exit 1
fi
if [ "$format" = "fixed-width" ] && [ -z "$inputoptions" ]; then
    echo 1>&2 "error: you specified the inputformat $format but did not provide mandatory input options"
    echo 1>&2 "please provide column widths separated by comma (e.g. 7,5)"
    echo 1>&2 "example: ./openrefine-batch-docker.sh ... -f $format -i columnWidths=7,5"
    exit 1
fi
if [ "$format" = "xlsx" ] || [ "$format" = "ods" ] && [ -z "$inputoptions" ]; then
    echo 1>&2 "error: you specified the inputformat $format but did not provide mandatory input options"
    echo 1>&2 "please provide sheets separated by comma (e.g. 0,1), default: 0 (first sheet)"
    echo 1>&2 "example: ./openrefine-batch-docker.sh ... -f $format -i sheets=0"
    exit 1
fi

# print variables
uuid=$(cat /proc/sys/kernel/random/uuid)
echo "Input directory:         $inputdir"
echo "Input files:             ${inputfiles[*]}"
echo "Input format:            $inputformat"
echo "Input options:           ${inputoptions[*]}"
echo "Config directory:        $configdir"
echo "Transformation rules:    ${jsonfiles[*]}"
echo "Cross directory:         $crossdir"
echo "Cross projects:          ${crossprojects[*]}"
echo "OpenRefine heap space:   $ram"
echo "OpenRefine version:      $version"
echo "OpenRefine workspace:    $outputdir"
echo "Export to workspace:     $export"
echo "Export format:           $exportformat"
echo "Templating options:      ${templating[*]}"
echo "Docker container name:   $uuid"
echo "restart after file:      $restartfile"
echo "restart after transform: $restarttransform"
echo ""

# declare additional variables
checkpoints=${#checkpointdate[@]}
checkpointdate[$((checkpoints + 1))]=$(date +%s)
checkpointname[$((checkpoints + 1))]="Start process"
memoryload=()

# safe cleanup handler
cleanup()
{
  echo "cleanup..."
  ${docker[*]} stop -t=5000 ${uuid}
  ${docker[*]} rm ${uuid}
  rm -r -f "${outputdir:?}"/workspace*.json
  # delete duplicates from copied projects
  if [ -n "$crossprojects" ]; then
      for i in "${crossprojects[@]}" ; do rm -r -f "${outputdir}/${i}" ; done
  fi
}
trap "cleanup;exit" SIGHUP SIGINT SIGQUIT SIGTERM

# launch server
checkpoints=${#checkpointdate[@]}
checkpointdate[$((checkpoints + 1))]=$(date +%s)
checkpointname[$((checkpoints + 1))]="Launch OpenRefine"
echo "=== $checkpoints. ${checkpointname[$((checkpoints + 1))]} ==="
echo ""
echo "starting time: $(date --date=@${checkpointdate[$((checkpoints + 1))]})"
echo ""
${docker[*]} run -d --name=${uuid} -v ${outputdir}:/data:z felixlohmeier/openrefine:${version} -i 0.0.0.0 -m ${ram} -d /data
# wait until server is available
until ${docker[*]} run --rm --link ${uuid} --entrypoint /usr/bin/curl felixlohmeier/openrefine-client:v0.3.10 --silent -N http://${uuid}:3333 | cat | grep -q -o "OpenRefine" ; do sleep 1; done
# show server logs
${docker[*]} attach ${uuid} &
echo ""

# import all files
if [ -n "$inputfiles" ]; then
    checkpoints=${#checkpointdate[@]}
    checkpointdate[$((checkpoints + 1))]=$(date +%s)
    checkpointname[$((checkpoints + 1))]="Import all files"
    echo "=== $checkpoints. ${checkpointname[$((checkpoints + 1))]} ==="
    echo ""
    echo "starting time: $(date --date=@${checkpointdate[$((checkpoints + 1))]})"
    echo ""
    for inputfile in "${inputfiles[@]}" ; do
        echo "import ${inputfile}..."
        # run client with input command
        ${docker[*]} run --rm --link ${uuid} -v ${inputdir}:/data:z felixlohmeier/openrefine-client:v0.3.10 -H ${uuid} -c $inputfile $inputformat ${inputoptions[@]}
        # show allocated system resources
        ps -o start,etime,%mem,%cpu,rss -C java --sort=start
        memoryload+=($(ps --no-headers -o rss -C java))
        echo ""
        # restart server to clear memory
        if [ "$restartfile" = "true" ]; then
            echo "save project and restart OpenRefine server..." 
            ${docker[*]} stop -t=5000 ${uuid}
            ${docker[*]} rm ${uuid}
            ${docker[*]} run -d --name=${uuid} -v ${outputdir}:/data:z felixlohmeier/openrefine:${version} -i 0.0.0.0 -m ${ram} -d /data
            until ${docker[*]} run --rm --link ${uuid} --entrypoint /usr/bin/curl felixlohmeier/openrefine-client:v0.3.10 --silent -N http://${uuid}:3333 | cat | grep -q -o "OpenRefine" ; do sleep 1; done
            ${docker[*]} attach ${uuid} &
            echo ""
        fi
    done
fi

# transform and export files
if [ -n "$jsonfiles" ] || [ "$export" = "true" ]; then
    checkpoints=${#checkpointdate[@]}
    checkpointdate[$((checkpoints + 1))]=$(date +%s)
    checkpointname[$((checkpoints + 1))]="Prepare transform & export"
    echo "=== $checkpoints. ${checkpointname[$((checkpoints + 1))]} ==="
    echo ""
    echo "starting time: $(date --date=@${checkpointdate[$((checkpoints + 1))]})"
    echo ""
    
    # get project ids
    echo "get project ids..."
    ${docker[*]} run --rm --link ${uuid} felixlohmeier/openrefine-client:v0.3.10 -H ${uuid} -l > "${outputdir}/projects.tmp"
    projectids=($(cut -c 2-14 "${outputdir}/projects.tmp"))
    projectnames=($(cut -c 17- "${outputdir}/projects.tmp"))
    cat "${outputdir}/projects.tmp" && rm "${outputdir:?}/projects.tmp"
    echo ""
    
    # provide additional OpenRefine projects for cross function
    if [ -n "$crossprojects" ]; then
        echo "provide additional projects for cross function..."
        # copy given projects to workspace
        rsync -a --exclude='*.project/history' "${crossdir}"/*.project "${outputdir}"
        # restart server to advertise copied projects
        echo "restart OpenRefine server to advertise copied projects..." 
        ${docker[*]} stop -t=5000 ${uuid}
        ${docker[*]} rm ${uuid}
        ${docker[*]} run -d --name=${uuid} -v ${outputdir}:/data:z felixlohmeier/openrefine:${version} -i 0.0.0.0 -m ${ram} -d /data
        until ${docker[*]} run --rm --link ${uuid} --entrypoint /usr/bin/curl felixlohmeier/openrefine-client:v0.3.10 --silent -N http://${uuid}:3333 | cat | grep -q -o "OpenRefine" ; do sleep 1; done
        ${docker[*]} attach ${uuid} &
        echo ""
    fi
    
    # loop for all projects
    for ((i=0;i<${#projectids[@]};++i)); do
        
        # apply transformation rules
        if [ -n "$jsonfiles" ]; then
            checkpoints=${#checkpointdate[@]}
            checkpointdate[$((checkpoints + 1))]=$(date +%s)
            checkpointname[$((checkpoints + 1))]="Transform ${projectnames[i]}"
            echo "=== $checkpoints. ${checkpointname[$((checkpoints + 1))]} ==="
            echo ""
            echo "starting time: $(date --date=@${checkpointdate[$((checkpoints + 1))]})"
            echo ""
            for jsonfile in "${jsonfiles[@]}" ; do
                echo "transform ${jsonfile}..."
                # run client with apply command
                ${docker[*]} run --rm --link ${uuid} -v ${configdir}:/data:z felixlohmeier/openrefine-client:v0.3.10 -H ${uuid} -f ${jsonfile} ${projectids[i]}
                # allocated system resources
                ps -o start,etime,%mem,%cpu,rss -C java --sort=start
	        memoryload+=($(ps --no-headers -o rss -C java))
                echo ""
                # restart server to clear memory
                if [ "$restarttransform" = "true" ]; then
                  echo "save project and restart OpenRefine server..." 
                  ${docker[*]} stop -t=5000 ${uuid}
                  ${docker[*]} rm ${uuid}
                  ${docker[*]} run -d --name=${uuid} -v ${outputdir}:/data:z felixlohmeier/openrefine:${version} -i 0.0.0.0 -m ${ram} -d /data
                  until ${docker[*]} run --rm --link ${uuid} --entrypoint /usr/bin/curl felixlohmeier/openrefine-client:v0.3.10 --silent -N http://${uuid}:3333 | cat | grep -q -o "OpenRefine" ; do sleep 1; done
                  ${docker[*]} attach ${uuid} &
                fi
                echo ""
            done
        fi
        
        # export project to workspace
        if [ "$export" = "true" ]; then
            checkpoints=${#checkpointdate[@]}
            checkpointdate[$((checkpoints + 1))]=$(date +%s)
            checkpointname[$((checkpoints + 1))]="Export ${projectnames[i]}"
            echo "=== $checkpoints. ${checkpointname[$((checkpoints + 1))]} ==="
            echo ""
            echo "starting time: $(date --date=@${checkpointdate[$((checkpoints + 1))]})"
            echo ""
            # get filename without extension
            filename=${projectnames[i]%.*}
            echo "export to file ${filename}.${exportformat}..."
            # run client with export command
            ${docker[*]} run --rm --link ${uuid} -v ${outputdir}:/data:z felixlohmeier/openrefine-client:v0.3.10 -H ${uuid} -E --output="${filename}.${exportformat}" "${templating[@]}" ${projectids[i]}
            # show allocated system resources
            ps -o start,etime,%mem,%cpu,rss -C java --sort=start
            memoryload+=($(ps --no-headers -o rss -C java))
            echo ""
        fi
        
        # restart server to clear memory
        if [ "$restartfile" = "true" ]; then    
              echo "restart OpenRefine server..." 
              ${docker[*]} stop -t=5000 ${uuid}
              ${docker[*]} rm ${uuid}
              ${docker[*]} run -d --name=${uuid} -v ${outputdir}:/data:z felixlohmeier/openrefine:${version} -i 0.0.0.0 -m ${ram} -d /data
              until ${docker[*]} run --rm --link ${uuid} --entrypoint /usr/bin/curl felixlohmeier/openrefine-client:v0.3.10 --silent -N http://${uuid}:3333 | cat | grep -q -o "OpenRefine" ; do sleep 1; done
              ${docker[*]} attach ${uuid} &
        fi
        echo ""        

    done
    
    # list output files
    if [ "$export" = "true" ]; then
        echo "output (number of lines / size in bytes):"
        wc -c -l "${outputdir}"/*.${exportformat}
        echo ""
    fi
fi

# run cleanup function
cleanup
echo ""

# calculate and print checkpoints
echo "=== Statistics ==="
echo ""
checkpoints=${#checkpointdate[@]}
checkpointdate[$((checkpoints + 1))]=$(date +%s)
checkpointname[$((checkpoints + 1))]="End process"
echo "starting time and run time of each step:"
checkpoints=${#checkpointdate[@]}
checkpointdate[$((checkpoints + 1))]=$(date +%s)
for i in $(seq 1 $checkpoints); do
    diffsec="$((${checkpointdate[$((i + 1))]} - ${checkpointdate[$i]}))"
    printf "%35s $(date --date=@${checkpointdate[$i]}) ($(date -d@${diffsec} -u +%H:%M:%S))\n" "${checkpointname[$i]}"
done
echo ""
diffsec="$((checkpointdate[$checkpoints] - checkpointdate[1]))"
echo "total run time: $(date -d@${diffsec} -u +%H:%M:%S) (hh:mm:ss)"

# calculate and print memory load
max=${memoryload[0]}
for n in "${memoryload[@]}" ; do
    ((n > max)) && max=$n
done
echo "highest memory load: $((max / 1024)) MB"