@@ -45,6 +45,37 @@ function short_source {

 # export it so child shells have access to the 'short_source' function also.

 export -f short_source

+# Download a file from a URL

+#

+# Will check cache (in $FILES) or download given URL.

+#

+# Argument is the URL to the remote file

+#

+# Will echo the local path to the file as the output.  Will die on

+# failure to download.

+#

+# Files can be pre-cached for CI environments, see EXTRA_CACHE_URLS

+# and tools/image_list.sh

+function get_extra_file {

+    local file_url=$1

+

+    file_name=$(basename "$file_url")

+    if [[ $file_url != file* ]]; then

+        # If the file isn't cache, download it

+        if [[ ! -f $FILES/$file_name ]]; then

+            wget --progress=dot:giga -c $file_url -O $FILES/$file_name

+            if [[ $? -ne 0 ]]; then

+                die "$file_url could not be downloaded"

+            fi

+        fi

+        echo "$FILES/$file_name"

+        return

+    else

+        # just strip the file:// bit and that's the path to the file

+        echo $file_url | sed 's/$file:\/\///g'

+    fi

+}

+

 # Retrieve an image from a URL and upload into Glance.

 # Uses the following variables:

@@ -24,15 +24,9 @@ set +o xtrace

 # --------

 # Set up default values for etcd

-ETCD_DOWNLOAD_URL=${ETCD_DOWNLOAD_URL:-https://github.com/coreos/etcd/releases/download}

-ETCD_VERSION=${ETCD_VERSION:-v3.1.7}

 ETCD_DATA_DIR="$DATA_DIR/etcd"

 ETCD_SYSTEMD_SERVICE="devstack@etcd.service"

 ETCD_BIN_DIR="$DEST/bin"

-ETCD_SHA256_AMD64="4fde194bbcd259401e2b5c462dfa579ee7f6af539f13f130b8f5b4f52e3b3c52"

-# NOTE(sdague): etcd v3.1.7 doesn't have anything for these architectures, though 3.2.0 does.

-ETCD_SHA256_ARM64=""

-ETCD_SHA256_PPC64=""

 ETCD_PORT=2379

 if is_ubuntu ; then

@@ -95,37 +89,19 @@ function cleanup_etcd3 {

 function install_etcd3 {

     echo "Installing etcd"

-    # Make sure etcd3 downloads the correct architecture

-    if is_arch "x86_64"; then

-        ETCD_ARCH="amd64"

-        ETCD_SHA256=${ETCD_SHA256:-$ETCD_SHA256_AMD64}

-    elif is_arch "aarch64"; then

-        ETCD_ARCH="arm64"

-        ETCD_SHA256=${ETCD_SHA256:-$ETCD_SHA256_ARM64}

-    elif is_arch "ppc64le"; then

-        ETCD_ARCH="ppc64le"

-        ETCD_SHA256=${ETCD_SHA256:-$ETCD_SHA256_PPC64}

-    else

-        exit_distro_not_supported "invalid hardware type - $ETCD_ARCH"

-    fi

-

-    ETCD_NAME=etcd-$ETCD_VERSION-linux-$ETCD_ARCH

-

     # Create the necessary directories

     sudo mkdir -p $ETCD_BIN_DIR

     sudo mkdir -p $ETCD_DATA_DIR

     # Download and cache the etcd tgz for subsequent use

+    local etcd_file

+    etcd_file="$(get_extra_file $ETCD_DOWNLOAD_LOCATION)"

     if [ ! -f "$FILES/etcd-$ETCD_VERSION-linux-$ETCD_ARCH/etcd" ]; then

-        ETCD_DOWNLOAD_FILE=$ETCD_NAME.tar.gz

-        if [ ! -f "$FILES/$ETCD_DOWNLOAD_FILE" ]; then

-            wget $ETCD_DOWNLOAD_URL/$ETCD_VERSION/$ETCD_DOWNLOAD_FILE -O $FILES/$ETCD_DOWNLOAD_FILE

-        fi

-        echo "${ETCD_SHA256} $FILES/${ETCD_DOWNLOAD_FILE}" > $FILES/etcd.sha256sum

+        echo "${ETCD_SHA256} $etcd_file" > $FILES/etcd.sha256sum

         # NOTE(sdague): this should go fatal if this fails

         sha256sum -c $FILES/etcd.sha256sum

-        tar xzvf $FILES/$ETCD_DOWNLOAD_FILE -C $FILES

+        tar xzvf $etcd_file -C $FILES

         sudo cp $FILES/$ETCD_NAME/etcd $ETCD_BIN_DIR/etcd

     fi

     if [ ! -f "$ETCD_BIN_DIR/etcd" ]; then

@@ -732,6 +732,40 @@ if [[ "$DOWNLOAD_DEFAULT_IMAGES" == "True" ]]; then

     DOWNLOAD_DEFAULT_IMAGES=False

 fi

+# This is a comma separated list of extra URLS to be listed for

+# download by the tools/image_list.sh script.  CI environments can

+# pre-download these URLS and place them in $FILES.  Later scripts can

+# then use "get_extra_file <url>" which will print out the path to the

+# file; it will either be downloaded on demand or acquired from the

+# cache if there.

+EXTRA_CACHE_URLS=""

+

+# etcd3 defaults

+ETCD_VERSION=${ETCD_VERSION:-v3.1.7}

+ETCD_SHA256_AMD64="4fde194bbcd259401e2b5c462dfa579ee7f6af539f13f130b8f5b4f52e3b3c52"

+# NOTE(sdague): etcd v3.1.7 doesn't have anything for these architectures, though 3.2.0 does.

+ETCD_SHA256_ARM64=""

+ETCD_SHA256_PPC64=""

+# Make sure etcd3 downloads the correct architecture

+if is_arch "x86_64"; then

+    ETCD_ARCH="amd64"

+    ETCD_SHA256=${ETCD_SHA256:-$ETCD_SHA256_AMD64}

+elif is_arch "aarch64"; then

+    ETCD_ARCH="arm64"

+    ETCD_SHA256=${ETCD_SHA256:-$ETCD_SHA256_ARM64}

+elif is_arch "ppc64le"; then

+    ETCD_ARCH="ppc64le"

+    ETCD_SHA256=${ETCD_SHA256:-$ETCD_SHA256_PPC64}

+else

+    exit_distro_not_supported "invalid hardware type - $ETCD_ARCH"

+fi

+ETCD_DOWNLOAD_URL=${ETCD_DOWNLOAD_URL:-https://github.com/coreos/etcd/releases/download}

+ETCD_NAME=etcd-$ETCD_VERSION-linux-$ETCD_ARCH

+ETCD_DOWNLOAD_FILE=$ETCD_NAME.tar.gz

+ETCD_DOWNLOAD_LOCATION=$ETCD_DOWNLOAD_URL/$ETCD_VERSION/$ETCD_DOWNLOAD_FILE

+# etcd is always required, so place it into list of pre-cached downloads

+EXTRA_CACHE_URLS+=",$ETCD_DOWNLOAD_LOCATION"

+

 # Detect duplicate values in IMAGE_URLS

 for image_url in ${IMAGE_URLS//,/ }; do

     if [ $(echo "$IMAGE_URLS" | grep -o -F "$image_url" | wc -l) -gt 1 ]; then

@@ -1,5 +1,14 @@

 #!/bin/bash

+# Print out a list of image and other files to download for caching.

+# This is mostly used by the OpenStack infrasturucture during daily

+# image builds to save the large images to /opt/cache/files (see [1])

+#

+# The two lists of URL's downloaded are the IMAGE_URLS and

+# EXTRA_CACHE_URLS, which are setup in stackrc

+#

+# [1] project-config:nodepool/elements/cache-devstack/extra-data.d/55-cache-devstack-repos

+

 # Keep track of the DevStack directory

 TOP_DIR=$(cd $(dirname "$0")/.. && pwd)

@@ -31,12 +40,20 @@ for driver in $DRIVERS; do

     ALL_IMAGES+=$URLS

 done

-# Make a nice list

-echo $ALL_IMAGES | tr ',' '\n' | sort | uniq

-

 # Sanity check - ensure we have a minimum number of images

 num=$(echo $ALL_IMAGES | tr ',' '\n' | sort | uniq | wc -l)

 if [[ "$num" -lt 4 ]]; then

     echo "ERROR: We only found $num images in $ALL_IMAGES, which can't be right."

     exit 1

 fi

+

+# This is extra non-image files that we want pre-cached.  This is kept

+# in a separate list because devstack loops over the IMAGE_LIST to

+# upload files glance and these aren't images.  (This was a bit of an

+# after-thought which is why the naming around this is very

+# image-centric)

+URLS=$(source $TOP_DIR/stackrc && echo $EXTRA_CACHE_URLS)

+ALL_IMAGES+=$URLS

+

+# Make a nice combined list

+echo $ALL_IMAGES | tr ',' '\n' | sort | uniq