Add ARM64 support for the Tanzu CLI

Signed-off-by: Marc Khouzam <marc.khouzam@broadcom.com>

README.md

@@ -29,7 +29,7 @@ asdf install bosh 7.0.0
 asdf global bosh 7.0.0
 ```
 
-To manually install use the following, where tool name is one of the support tools listed above:
+To manually install use the following, where tool name is one of the supported tools listed above:
 ```
 asdf plugin-add <tool name> https://github.com/vmware-tanzu/tanzu-plug-in-for-asdf.git
 ```

bin/download

@@ -9,15 +9,16 @@ set -euo pipefail
 readonly script_dir="$( cd -P "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 readonly file_name="$(basename "$(dirname "${script_dir}")")"
 readonly os=$(uname -s |awk '{print tolower($0)}')
+readonly arch=$(a=$(uname -m) && ([ $a = aarch64 ] || [ $a = arm64 ]) && printf arm64 || printf amd64)
 readonly version=$ASDF_INSTALL_VERSION
 readonly asdf_download_path=$ASDF_DOWNLOAD_PATH
 readonly download_dir="$(mktemp -d -t "asdf_${file_name}_XXXXXXXX")"
 trap 'rm -rf "${download_dir}"' EXIT
 
-. "${script_dir}/../products.inc.sh" "${file_name}" "${version}" "${os}"
+. "${script_dir}/../products.inc.sh" "${file_name}" "${version}" "${os}" "${arch}"
 
-if [[ ${MISSING_PRODUCTS[*]} =~ "${file_name}_${os}" ]]; then
-  echo -e "\nError message: ${file_name} is not available for OS type ${os}\n" >&2
+if [[ ${MISSING_PRODUCTS[*]} =~ "${file_name}_${os}_${arch}" ]]; then
+  echo -e "\nError message: ${file_name} is not available for OS type ${os}_${arch}\n" >&2
   exit 1
 fi
 

products.inc.sh

@@ -11,6 +11,7 @@ setEnv() {
   local product="${1:-}"
   local v="${2:-}"
   local o="${3:-}"
+  local a="${4:-}"
 
   # To add a product create a case statement matching the file name and add variables as follows
   # REPO_SLUG
@@ -78,8 +79,13 @@ setEnv() {
       VERSION_COMMAND='version'
       ;;
     tanzu)
+      # Tanzu CLI only started supporting ARM64 natively for darwin with version 1.1.0*
+      # we therefore use the AMD64 version for older versions
+      if [[ "${o}" == "darwin" && "${v}" < "1.1.0" ]]; then
+        a="amd64"
+      fi
       REPO_SLUG='vmware-tanzu/tanzu-cli'
-      PRIMARY_GIT_TEMPLATE="v${v}/tanzu-cli-${o}-amd64.tar.gz"
+      PRIMARY_GIT_TEMPLATE="v${v}/tanzu-cli-${o}-${a}.tar.gz"
       SECONDARY_GIT_TEMPLATE=""
       VERSION_COMMAND='version' #| grep version | sed -n -e "s/^.*version: v//p"
       ;;
@@ -95,9 +101,11 @@ setEnv() {
       ;;
   esac
 
-  # MISSING_PRODUCTS is used to highlight products that aren't available for an OS type
+  # MISSING_PRODUCTS is used to highlight products that aren't available for an OS_ARCH type
   MISSING_PRODUCTS=(
-    "bbr-s3-config-validator_darwin"
+    "bbr-s3-config-validator_darwin_amd64"
+    "bbr-s3-config-validator_darwin_arm64"
+    "tanzu_linux_arm64"
   )
 
   declare -rx REPO_SLUG GIT_FILE_NAME_TEMPLATE VERSION_COMMAND