Use unique work directories when building with docker.

This allows multiple builds to be run in parallel.

Changelog: Title
Signed-off-by: Drew Moseley <drew.moseley@northern.tech>

.gitignore

@@ -1,8 +1,7 @@
 deploy
 input
-work
 rootfs_overlay_demo/*
 mender_local_config
 *.xml
 *.html
-convert.log
+logs/convert.log*

README.md

@@ -116,7 +116,7 @@ MENDER_ARTIFACT_NAME=release-1 ./docker-mender-convert \
 ```
 
 Conversion will take 10-30 minutes, depending on image size and resources
-available. You can watch `work/convert.log` for progress and diagnostics
+available. You can watch `WORKDIR/convert.log` for progress and diagnostics
 information.
 
 After it finishes, you can find your images in the `deploy` directory on your

docker-mender-convert

@@ -25,13 +25,23 @@ MENDER_CONVERT_DIR="$(pwd)"
 #Pass in version in-case we are added as a git submodule
 MENDER_CONVERT_VERSION=$(git_mender_convert_version)
 
+# Create a unique work directory so we can run multiple containers in parallel
+WORK_DIR=$(mktemp -d -p $(pwd) -t work.XXXX)
+WORK_SUFFIX=$(echo $WORK_DIR | awk -F. '{print $NF}')
+LOG_FILE="convert.log.${WORK_SUFFIX}"
+
+set +e
 docker run \
   --rm \
   -v $MENDER_CONVERT_DIR:/mender-convert \
+  -v $WORK_DIR:/mender-convert/work \
   --privileged=true \
   --cap-add=SYS_MODULE \
   -v /dev:/dev \
   -v /lib/modules:/lib/modules:ro \
   --env MENDER_ARTIFACT_NAME=${MENDER_ARTIFACT_NAME} \
   --env MENDER_CONVERT_VERSION=${MENDER_CONVERT_VERSION} \
+  --env MENDER_CONVERT_LOG_FILE=logs/${LOG_FILE} \
   $IMAGE_NAME "$@"
+
+[ $? -eq 0 ] && rmdir ${WORK_DIR}

mender-convert

@@ -18,8 +18,9 @@ source modules/bootstrap.sh
 source modules/cliparser.sh
 source modules/decompressinput.sh
 
-mkdir -p work
-touch work/convert.log
+export MENDER_CONVERT_LOG_FILE=$(pwd)/${MENDER_CONVERT_LOG_FILE:-logs/convert.log}
+touch ${MENDER_CONVERT_LOG_FILE}
+chown -R --reference=. ${MENDER_CONVERT_LOG_FILE}
 
 ###############################################################################
 #                Declaration of important variables for this file             #
@@ -66,11 +67,10 @@ function trap_exit() {
   EXIT_CODE=$?
   if [[ ${EXIT_CODE} -ne 0 && ${EXIT_CODE} -ne ${FATAL_EXIT_CODE} ]]; then
     log_error "mender-convert failed"
-    [ -e work/convert.log ] && tac work/convert.log | sed '/DEBUG/q' | tac | sed 's/Running/When running/'
+    [ -e ${MENDER_CONVERT_LOG_FILE} ] && tac ${MENDER_CONVERT_LOG_FILE} | sed '/DEBUG/q' | tac | sed 's/Running/When running/'
     log_error "mender-convert exit code: ${EXIT_CODE}"
   fi
-  mv work/convert.log convert.log
-  sudo rm -rf work
+  sudo rm -rf work/*
 }
 
 function trap_term() {

mender-convert-modify

@@ -279,7 +279,7 @@ esac
 run_and_log_cmd "sudo mkdir -p work/rootfs/etc/mender/scripts/"
 run_and_log_cmd "echo -n ${VERSION_STRING} | sudo tee work/rootfs/etc/mender/scripts/version"
 
-log_info "Installing a custom /etc/fstab (see work/convert.log for more info)"
+log_info "Installing a custom /etc/fstab (see ${MENDER_CONVERT_LOG_FILE} for more info)"
 
 if [ "${MENDER_GRUB_EFI_INTEGRATION}" == "y" ]; then
   boot_part_mountpoint="/boot/efi"

modules/log.sh

@@ -16,7 +16,7 @@
 
 # This must be an absolute path, as users might call the log functions
 # from sub-directories
-log_file="${PWD}/work/convert.log"
+log_file="${MENDER_CONVERT_LOG_FILE:-${PWD}/work/convert.log}"
 
 
 # Add some colour to the log messages