publish.sh

#!/bin/sh
#
# Install bootstrap.sh and ezvm local content to Google Cloud Storage
# where it can be accessed by new VMs as they come online.
#

cd "$(dirname $0)"
BASE_DIR="$(dirname $(pwd))"

fatal() {
    r=$1; shift;
    echo "ERROR: $@" 1>&2
    exit $r
}

if [ ! -e $BASE_DIR/configuration ]; then
    fatal 1 "CONFIG: You did not create the configuration file: $BASE_DIR/configuration"
fi

. $BASE_DIR/configuration || fatal 2 "CONFIG: Cannot read $BASE_DIR/configuration"

if [ -z "$GS_EZVM_LOCAL_ARCHIVE" -o "$GS_EZVM_LOCAL_ARCHIVE" = "__CONFIGURE_GS_ARCHIVE_URL__" ]; then
    fatal 3 "CONFIG: You did not configure GS_EZVM_LOCAL_ARCHIVE in $BASE_DIR/configuration"
fi

if [ -z "$GS_BOOTSTRAP_SH" -o "$GS_BOOTSTRAP_SH" = "__CONFIGURE_GS_BOOTSTRAP_URL__" ]; then
    fatal 3 "CONFIG: You did not configure GS_BOOTSTRAP_SH in $BASE_DIR/configuration"
fi


# Create the build dir if needed
[ -d "$BASE_DIR/build" ] || mkdir -p "$BASE_DIR/build" || fatal 5 "Cannot create $BASE_DIR/build directory"

archive=$(basename "$GS_EZVM_LOCAL_ARCHIVE")


# bootstrap.sh cannot read a configuration file because it is being stored
# in GS, where no files can be read.  Thus we just replace the strings in
# there with the actual values, so it is stand-alone ready.

echo "# Building bootstrap.sh"

cat $BASE_DIR/scripts/bootstrap.sh \
    | sed -e "s,__CONFIGURE_GS_ARCHIVE_URL__,$GS_EZVM_LOCAL_ARCHIVE,g" \
    | sed -e "s,__CONFIGURE_GS_BOOTSTRAP_URL__,$GS_BOOTSTRAP_SH,g" \
    > $BASE_DIR/build/bootstrap.sh \
    || fatal $? "Failed to customize bootstrap.sh"


echo "# Building $archive"

cd "$BASE_DIR/local" || fatal $? "cd $BASE_DIR/local failed"

# Copy the configuration file into the local dir, where it will be packaged
# up and distributed with the archive.
( cat <<EOF
###
### This file is automatically copied by ../scripts/publish.sh
### It copied the file from ../configuration to this location
### DO NOT EDIT THIS FILE, YOUR CHANGES WILL BE LOST.
###
EOF
cat $BASE_DIR/configuration
) > $BASE_DIR/local/configuration || fatal $? "Cannot copy configuration"

# Now zip up the archive, including the copied configuration file
tar -czf "$BASE_DIR/build/$archive" * || fatal $? "Create $archive failed"


# Copy files up to Google Cloud Storage

echo "# Uploading to Google Cloud Storage"

cd "$BASE_DIR" || fatal $? "cd $BASE_DIR failed"

gsutil cp build/bootstrap.sh "$GS_BOOTSTRAP_SH" || fatal $? "gsutil cp failed for $GS_BOOTSTRAP_SH"

gsutil cp "build/$archive" "$GS_EZVM_LOCAL_ARCHIVE" || fatal $? "gsutil cp failed for $GS_EZVM_LOCAL_ARCHIVE"