Add script to mimick containerized execution

Author: sawenzel

GRID/utils/runGRIDContainerized.sh

@@ -0,0 +1,35 @@
+#!/usr/bin/env bash
+
+# Runs a job containerized ... as would be the case on the GRID.
+# Mimics what the AliEn job handler does.
+
+SCRIPT=$1
+[ $SCRIPT == "" ] && echo "Please provide a script to run" && exit 1
+echo "Trying to run script ${SCRIPT} in a container environment"
+
+# we just use the default singularity container
+APPTAINER_CONTAINER=/cvmfs/alice.cern.ch/containers/fs/singularity/default
+
+# create workdir
+WORK_DIR=$(mktemp -d /tmp/alien-job-XXXXXX)
+echo "This job will be run in $WORK_DIR"
+
+# copy script to WORK_DIR
+cp ${SCRIPT} ${WORK_DIR}/job.sh
+
+# export certificates (need to be created before)
+ALIEN_CERTFILE=$(ls -t /tmp/tokencert_*.pem 2> /dev/null | head -n 1)
+ALIEN_KEYFILE=$(ls -t /tmp/tokenkey_*.pem 2> /dev/null | head -n 1)
+
+[ "${ALIEN_CERTFILE}" == "" ] && echo "No certificate file found; Initialize a token with alien-init-token or similar" && exit 1
+[ "${ALIEN_KEYFILE}" == "" ] && echo "No certificate file found; Initialize a token with alien-init-token or similar" && exit 1
+
+JALIEN_TOKEN_CERT=$(awk '! /^-/{print $0}' ${ALIEN_CERTFILE} | tr -d '\n')
+JALIEN_TOKEN_KEY=$(awk '! /^-/{print $0}' ${ALIEN_KEYFILE} | tr -d '\n')
+
+echo "JALIEN_TOKEN_CERT=${JALIEN_TOKEN_CERT}" > ${WORK_DIR}/envfile
+echo "JALIEN_TOKEN_KEY=${JALIEN_TOKEN_KEY}" >> ${WORK_DIR}/envfile
+
+# launch job = script inside the container in the workdir
+/cvmfs/alice.cern.ch/containers/bin/apptainer/current/bin/apptainer exec -C -B /cvmfs:/cvmfs,${WORK_DIR}:/workdir  \
+                                                                    --pwd /workdir --env-file ${WORK_DIR}/envfile ${APPTAINER_CONTAINER} /workdir/job.sh