From: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
Date: Mon, 12 Sep 2016 18:02:42 +0200
Subject: [PATCH] AArch64: Add support for downloading prebuilt DEBs

Change-Id: I6042f9f7bdde5a15e3cb5a94ab67a990faae0418
Signed-off-by: Anders Roxell <anders.roxell@enea.com>
Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
---
 ovs_build/prebuilt-ovs-fetch.sh | 70 +++++++++++++++++++++++++++++++++++++++++
 pre_build_hook                  | 10 ++++++
 2 files changed, 80 insertions(+)
 create mode 100755 ovs_build/prebuilt-ovs-fetch.sh

diff --git a/ovs_build/prebuilt-ovs-fetch.sh b/ovs_build/prebuilt-ovs-fetch.sh
new file mode 100755
index 0000000..b4f30c5
--- /dev/null
+++ b/ovs_build/prebuilt-ovs-fetch.sh
@@ -0,0 +1,70 @@
+#!/bin/bash
+
+set -eux
+
+BUILD_DEST=${BUILD_DEST:-/deb}
+BUILD_HOME=${BUILD_HOME:-/tmp/ovs-dpdk}
+BUILD_ARCH=${BUILD_ARCH:-$(dpkg --print-architecture)}
+UBUNTU_ARCH=${UBUNTU_ARCH:-${BUILD_ARCH}}
+
+# armband_fetch will download all binaries for one debian source package
+#
+# Usage:
+#   armband_fetch <src_deb_name> <src_deb_version> \
+#                 [<repo_base_url> \
+#                 [<repo_Sources_relative_url> \
+#                 [<repo_Packages_relative_url>]]] \
+#
+# e.g.:
+#   armband_fetch dpdk 16.07-0ubuntu5~u1604+mos1 \
+#     https://linux.enea.com/mos-repos/ubuntu/10.0 \
+#     dists/mos10.0-fuel-plugin-ovs/main/source/Sources \
+#     dists/mos10.0-fuel-plugin-ovs/main/binary-arm64/Packages
+function armband_fetch() {
+  local name=$1
+  local ver=${2//\+/\\\+}
+  local repo_base_url=${3:-http://linux.enea.com/mos-repos/ubuntu/10.0}
+  local repo_Sources_url=${4:-dists/mos10.0-fuel-plugin-ovs/main/source/Sources}
+  local repo_Packages_url=${5:-dists/mos10.0-fuel-plugin-ovs/main/binary-arm64/Packages}
+  local found=false
+
+  # Fetch Sources & Packages files if not already present
+  if [ ! -f Sources -o ! -f Packages ]; then
+    sudo apt-get -y --force-yes install wget
+    wget -c "${repo_base_url}/${repo_Sources_url}"
+    wget -c "${repo_base_url}/${repo_Packages_url}"
+  fi
+
+  L=$(grep -Pzo "(?<=Package: ${name}\nBinary: )(\N*?)(?=\nVersion: ${ver}\n)" \
+    Sources | tr -d ',')
+  for deb_binary in ${L}; do
+    D=$(grep -Po "(?<=Filename: )(.*?\/${deb_binary}_${ver}_.*?\.deb)" Packages) || true
+    if [ -n "${D}" ]; then
+      wget -c "${repo_base_url}/${D}" && found=true
+    fi
+  done
+  if [ ${found} = false ]; then
+    echo "ERROR: Could not find DEBs for pkg/ver: ${name}/${ver}"
+    exit 1
+  fi
+}
+
+for arch in ${UBUNTU_ARCH}; do
+  if [ "${arch}" = "${BUILD_ARCH}" ]; then
+   # Skip fetching native binaries
+    continue
+  fi
+
+  cd ${BUILD_DEST}; rm -rf ${BUILD_HOME}; mkdir -p ${BUILD_HOME}
+  cd ${BUILD_HOME}
+
+  ARMBAND_BASE="http://linux.enea.com/mos-repos/ubuntu/10.0"
+  ARMBAND_SRCS="dists/mos10.0-fuel-plugin-ovs/main/source/Sources"
+  ARMBAND_BINS="dists/mos10.0-fuel-plugin-ovs/main/binary-${arch}/Packages"
+
+  # OVS with NSH
+  armband_fetch 'openvswitch' '.*nsh' \
+    "${ARMBAND_BASE}" "${ARMBAND_SRCS}" "${ARMBAND_BINS}"
+  mkdir -p ${BUILD_HOME}/deb; mv *.deb ${BUILD_HOME}/deb; cd ${BUILD_HOME}/deb
+  tar czvf ${BUILD_DEST}/ovs-nsh_${arch}.tar.gz .;
+done
diff --git a/pre_build_hook b/pre_build_hook
index a955678..f9a6010 100755
--- a/pre_build_hook
+++ b/pre_build_hook
@@ -6,6 +6,11 @@ BUILD_FOR=${BUILD_FOR:-ubuntu}
 BUILD_ARCH="$(dpkg --print-architecture)"
 DIR="$(dirname `readlink -f $0`)"

+# Pass target arch(s) (UBUNTU_ARCH) to build scripts.
+# All archs should be represented in `dpkg --print-architecture` format
+# UBUNTU_ARCH holds a space-separated list of target arch(s)
+export UBUNTU_ARCH=${UBUNTU_ARCH:-$(dpkg --print-architecture)}
+
 function build_pkg {
   case ${BUILD_ARCH} in
     arm64)
@@ -24,6 +29,11 @@ function build_pkg {
       rm -rf ${DEB_DIR};  mkdir -p ${DEB_DIR}; chmod 777 ${DEB_DIR};
       sudo docker run -v ${DEB_DIR}:/deb -t  ovs_build /ovs_build/build-ovs-nsh.sh
       cp -r ${DEB_DIR}/*  ${DIR}/repositories/ubuntu/
+
+      rm -rf ${DEB_DIR};  mkdir -p ${DEB_DIR}; chmod 777 ${DEB_DIR};
+      sudo docker run -e "UBUNTU_ARCH=${UBUNTU_ARCH}" -e "BUILD_ARCH=${BUILD_ARCH}" \
+        -v ${DEB_DIR}:/deb -t ovs_build /ovs_build/prebuilt-ovs-fetch.sh
+      cp -r ${DEB_DIR}/*  ${DIR}/repositories/ubuntu/
       rm -rf ${DEB_DIR}

       ;;