start-db2-container.sh

#!/bin/bash

if [ "$NS" == "" ]; then
    echo "Using default namespace"
    export NS=default
fi
export POD_NAME=db2-test-pod

kubectl get pods -n ${NS}

echo "Checking for previous component test leftovers at " `date`
kubectl get -n ${NS} Pod/${POD_NAME}
if [ "$?" == "0" ]; then
    echo "Found pod; deleting it at " `date`
    kubectl delete -n ${NS} Pod/${POD_NAME}
    for i in `seq 1 24`
    do
        podName=`kubectl get -n ${NS} -l app=${POD_NAME} pod -o name`
        if [ "$podName" == "" ]; then
            echo "Pods not running at " `date`
            rc=0
            break
        else
            echo "Found pod $podName at " `date`
        fi
        sleep 5
    done
    sleep 10
else
    echo "No pod found at " `date`
fi

echo "Creating DB2 container for component test at " `date`
cat /work/ace-demo-pipeline/tekton/temp-db2/db2-test-pod.yaml | sed 's/PASSWORD_REPLACEMENT_STRING/SecurePassw0rd/g' | kubectl apply -f -


rc=1
echo "Starting polling for container start at " `date`
for i in `seq 1 120`
do
    kubectl logs -n ${NS} Pod/${POD_NAME} | head -n 20  | grep "Creating"
    if [ "$?" == "0" ]; then
        echo "Container is ready at " `date`
        rc=0
        break
    fi
    if [ $( expr $i % 6 ) == "0" ]; then
	echo "Still waiting after" $( expr $i \* 5 ) "seconds . . ."
    fi
    sleep 5
done

if [ "$rc" == "1" ]; then
    echo "Container start failed; giving up at " `date`
    echo "Current logs from the pod:"
    echo "----------------------------------------"
    kubectl logs -n ${NS} Pod/${POD_NAME}
    echo "----------------------------------------"
    return 1
fi

echo "Setting up auto-shutdown script at " `date`

scriptFile=$(mktemp)
cat <<EOF > $scriptFile
#!/bin/bash

# Create second script to shut the container down after 30 minutes

echo "#!/bin/bash"   > /tmp/timed-shutdown.sh
echo 'echo "### Sleeping for 1800 seconds" >> /proc/1/fd/1' >> /tmp/timed-shutdown.sh
echo "sleep 1800"   >> /tmp/timed-shutdown.sh
echo 'echo "### Sending SIGTERM to process 1" >> /proc/1/fd/1' >> /tmp/timed-shutdown.sh
echo "kill -TERM 1" >> /tmp/timed-shutdown.sh
chmod 775 /tmp/timed-shutdown.sh

echo "### Starting timed shutdown script" >> /proc/1/fd/1
cd /tmp
echo "" | nohup /tmp/timed-shutdown.sh > /dev/null 2>&1 &
echo "Timer script launched; exiting"
EOF

#cat $scriptFile
chmod 775 $scriptFile
kubectl cp $scriptFile ${NS}/${POD_NAME}:/tmp/shutdown-script.sh
kubectl exec db2-test-pod -- /tmp/shutdown-script.sh
rm $scriptFile