Fix API breakage caused by OS Plugin version scan

[releng/global-jjb.git] / shell / packer-install.sh

diff --git a/shell/packer-install.sh b/shell/packer-install.sh
index feecf05..86ddf82 100644 (file)
--- a/shell/packer-install.sh
+++ b/shell/packer-install.sh
@@ -12,23 +12,39 @@ echo "---> packer-install.sh"
 # The script checks for the packer binaries and installs the binary
 # if its not available
 
-# $PACKER_VERSION        : Define a packer version passed as job paramter
-
-PACKER_VERSION="${PACKER_VERSION:-1.1.3}"
-
 # Ensure we fail the job if any steps fail.
 set -eu -o pipefail
 
-if hash packer.io 2>/dev/null; then
-    echo "packer.io command is available."
-else
-    echo "packer.io command not is available. Installing packer ..."
+# $PACKER_VERSION        : Define a packer version passed as job paramter
+PACKER_VERSION="${PACKER_VERSION:-1.2.3}"
+export PATH="${WORKSPACE}/bin:$PATH"
+
+packer_install() {
     # Installs Hashicorp's Packer binary, required for verify & merge packer jobs
-    pushd packer
+    pushd "${WORKSPACE}"
     wget -nv "https://releases.hashicorp.com/packer/${PACKER_VERSION}/packer_${PACKER_VERSION}_linux_amd64.zip"
     mkdir -p "${WORKSPACE}/bin"
-    unzip "packer_${PACKER_VERSION}_linux_amd64.zip" -d ${WORKSPACE}/bin/
+    unzip "packer_${PACKER_VERSION}_linux_amd64.zip" -d "${WORKSPACE}/bin/"
     # rename packer to avoid conflict with binary in cracklib
-    mv ${WORKSPACE}/bin/packer "${WORKSPACE}/bin/packer.io"
+    mv "${WORKSPACE}/bin/packer" "${WORKSPACE}/bin/packer.io"
     popd
+}
+
+# Functions to compare semantic versions x.y.z
+version_gt() { test "$(echo "$@" | tr " " "\n" | sort -V | head -n 1)" != "$1"; }
+version_le() { test "$(echo "$@" | tr " " "\n" | sort -V | head -n 1)" == "$1"; }
+version_lt() { test "$(echo "$@" | tr " " "\n" | sort -rV | head -n 1)" != "$1"; }
+version_ge() { test "$(echo "$@" | tr " " "\n" | sort -rV | head -n 1)" == "$1"; }
+
+if hash packer.io 2>/dev/null; then
+    CURRENT_VERSION="$(packer.io --version)"
+    if version_lt $CURRENT_VERSION $PACKER_VERSION; then
+       echo "Packer version $CURRENT_VERSION installed is less than $PACKER_VERSION available, updating Packer."
+       packer_install
+    else
+      echo "Packer version installed $CURRENT_VERSION is greater than or equal to the required minimum version $PACKER_VERSION."
+    fi
+else
+    echo "Packer binary not available, installing Packer version $PACKER_VERSION."
+    packer_install
 fi