Revert "Remove the -only CLI option for packer build"

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

diff --git a/shell/packer-build.sh b/shell/packer-build.sh
index 1caca8e..73e7496 100644 (file)
--- a/shell/packer-build.sh
+++ b/shell/packer-build.sh
@@ -22,11 +22,11 @@ PACKER_BUILD_LOG="$PACKER_LOGS_DIR/packer-build.log"
 mkdir -p "$PACKER_LOGS_DIR"
 export PATH="${WORKSPACE}/bin:$PATH"
 
-cd packer || exit
+cd packer
 
 # Prioritize the project's own version of vars if available
 platform_file="common-packer/vars/$PACKER_PLATFORM.json"
-if [ -f "vars/$PACKER_PLATFORM.json" ]; then
+if [[ -f "vars/$PACKER_PLATFORM.json" ]]; then
     platform_file="vars/$PACKER_PLATFORM.json"
 fi
 
@@ -36,11 +36,53 @@ packer.io validate \
     -var-file="$CLOUDENV" \
     -var-file="$platform_file" \
     "templates/$PACKER_TEMPLATE.json"
+
+set -x
+# If this is a Gerrit system, check patch comments for successful verify build.
+if [[ -n ${GERRIT_URL:-} ]] && \
+   [[ -n ${GERRIT_CHANGE_NUMBER:-} ]] && \
+   [[ -n ${GERRIT_PATCHSET_NUMBER:-} ]] && \
+   curl -s "${GERRIT_URL}/changes/${GERRIT_CHANGE_NUMBER}/detail" \
+   | tail -n +2 | jq .messages[].message? \
+   | grep "Patch Set ${GERRIT_PATCHSET_NUMBER}:.*Build Successful.*verify-build-${PACKER_PLATFORM}-${PACKER_TEMPLATE}"
+then
+    echo "Build already successful for this patch set. Skipping merge build..."
+    exit
+# If this is Github, check the last non-merge commit for a successful Packer
+# Verify Build status.
+elif [[ "${GIT_BASE:-}" =~ https://github.com ]]; then
+    LAST_CHANGE_SHA=$(git log --no-merges -1 --format=%H)
+    API_BASE=$(echo "$GIT_BASE" | sed -E 's#(www.)?github.com#api.github.com/repos#')
+    STATUS=$(curl "${API_BASE}/statuses/${LAST_CHANGE_SHA}" \
+        | jq ".[] | select(.state == \"success\" and .context == \"Packer ${PACKER_PLATFORM}-${PACKER_TEMPLATE} Verify Build\")")
+    if [[ -n ${STATUS} ]]; then
+        echo "Build already successful for this patch set. Skipping merge build..."
+        exit
+    fi
+fi
+set +x
+
 packer.io build -color=false \
+    -only "${PACKER_BUILDER}" \
     -var-file="$CLOUDENV" \
     -var-file="$platform_file" \
     "templates/$PACKER_TEMPLATE.json"
 
+# Extract image name from log and store value in the downstream job
+if [[ ${UPDATE_CLOUD_IMAGE} == 'true' ]]; then
+
+    NEW_IMAGE_NAME=$(grep -P '(\s+.*image: )(ZZCI\s+.*\d+-\d+\.\d+)' \
+                          "$PACKER_BUILD_LOG" | awk -F': ' '{print $4}')
+
+    echo NEW_IMAGE_NAME="$NEW_IMAGE_NAME" >> "$WORKSPACE/variables.prop"
+    echo "NEW_IMAGE_NAME: ${NEW_IMAGE_NAME}"
+
+    # Copy variables.prop to variables.jenkins-trigger so that the end of build
+    # trigger can pick up the file as input for triggering downstream jobs.
+    # Dont tigger downstream job when UPDATE_CLOUD_IMAGE is set to 'false'
+    cp "$WORKSPACE/variables.prop" "$WORKSPACE/variables.jenkins-trigger"
+fi
+
 # Retrive the list of cloud providers
 mapfile -t clouds < <(jq -r '.builders[].name' "templates/$PACKER_TEMPLATE.json")