reduce-snapshot should return original snapshot

When the single component retrieved does not
exist in the SNAPSHOT parameter, the script should
return the origin SNAPSHOT contents. Currently
it is returning an empty list.

Author: joejstuart

hack/reduce-snapshot.sh

@@ -63,15 +63,15 @@ if [ "${SINGLE_COMPONENT}" == "true" ]; then
     jq --arg component "${SNAPSHOT_CREATION_COMPONENT}" \
     'del(.components[] | select(.name != $component))' "$WORKING_SNAPSHOT" > "$REDUCED_SNAPSHOT"
 
-    mv "$REDUCED_SNAPSHOT" "$WORKING_SNAPSHOT"
-    ## make sure we still have 1 component
-    COMPONENT_COUNT=$(jq -r '[ .components[] ] | length' "$WORKING_SNAPSHOT")
-    echo "COMPONENT_COUNT: ${COMPONENT_COUNT}"
-    if [ "${COMPONENT_COUNT}" != "1" ] ; then
+    COMPONENT_COUNT=$(jq -r '[ .components[] ] | length' "$REDUCED_SNAPSHOT")
+    if [ "${COMPONENT_COUNT}" == "1" ]; then
+      mv "$REDUCED_SNAPSHOT" "$WORKING_SNAPSHOT"
+    else
       echo "Error: Reduced Snapshot has ${COMPONENT_COUNT} components. It should contain 1"
       echo "       Verify that the Snapshot contains the built component: ${SNAPSHOT_CREATION_COMPONENT}"
-      exit 1
+      echo "Returning original Snapshot"
     fi
+
   fi
 fi