Merge pull request #1968 from scoheb/KONFLUX-4136-ec-cli-image

feat(KONFLUX-4136): new reduce-snapshot script

Dockerfile

@@ -72,6 +72,9 @@ COPY --from=build "/build/dist/ec_${TARGETOS}_${TARGETARCH}" /usr/local/bin/ec
 # Copy the one kubectl binary that can run in this container
 COPY --from=build "/build/dist/kubectl_${TARGETOS}_${TARGETARCH}" /usr/local/bin/kubectl
 
+# Copt reduce-snapshot script needed for single component mode
+COPY hack/reduce-snapshot.sh /usr/local/bin
+
 # OpenShift preflight check requires a license
 COPY --from=build /build/LICENSE /licenses/LICENSE
 

hack/reduce-snapshot.sh

@@ -0,0 +1,69 @@
+#!/usr/bin/env bash
+# Copyright The Enterprise Contract Contributors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+# This script attempts to reduce a snapshot to a single component
+# It determines the component via a custom resource's labels.
+# It requires that the following environment variables be defined:
+#
+# - SINGLE_COMPONENT: true if single component mode is enabled.
+# - SNAPSHOT: String representation of Snapshot
+# - CUSTOM_RESOURCE: Custom Resource to query for built component in Snapshot
+# - CUSTOM_RESOURCE_NAMESPACE: Namespace where Custom Resource is found
+# - SNAPSHOT_PATH: The location to place the reduced Snapshot json file
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+echo "Single Component mode? ${SINGLE_COMPONENT}"
+if [ "${SINGLE_COMPONENT}" == "true" ]; then
+
+  CR_NAMESPACE_ARG=
+  if [ "${CUSTOM_RESOURCE_NAMESPACE}" != "" ]; then
+    CR_NAMESPACE_ARG="-n ${CUSTOM_RESOURCE_NAMESPACE}"
+  fi
+  SNAPSHOT_CREATION_TYPE=$(kubectl get "$CUSTOM_RESOURCE" ${CR_NAMESPACE_ARG:+$CR_NAMESPACE_ARG} -ojson \
+      | jq -r '.metadata.labels."test.appstudio.openshift.io/type" // ""')
+  SNAPSHOT_CREATION_COMPONENT=$(kubectl get "$CUSTOM_RESOURCE" ${CR_NAMESPACE_ARG:+$CR_NAMESPACE_ARG} -ojson \
+      | jq -r '.metadata.labels."appstudio.openshift.io/component" // ""')
+
+  echo "SNAPSHOT_CREATION_TYPE: ${SNAPSHOT_CREATION_TYPE}"
+  echo "SNAPSHOT_CREATION_COMPONENT: ${SNAPSHOT_CREATION_COMPONENT}"
+  if [ "${SNAPSHOT_CREATION_TYPE}" == "component" ] && [ "${SNAPSHOT_CREATION_COMPONENT}" != "" ]; then
+    echo "Single Component mode is ${SINGLE_COMPONENT} and Snapshot type is component"
+
+    # verify if in json form
+    SNAPSHOT="$(cat "${SNAPSHOT}" 2> /dev/null || echo "${SNAPSHOT}")"
+
+    [[ ! "${SNAPSHOT}" =~ ^\s*\{ ]] && echo 'Error: Cannot load snapshot from JSON string or file' && exit 1
+
+    REDUCED_SNAPSHOT=$(echo "${SNAPSHOT}" | jq --arg component "${SNAPSHOT_CREATION_COMPONENT}" \
+    'del(.components[] | select(.name != $component))')
+
+    ## make sure we still have 1 component
+    COMPONENT_COUNT=$(echo "$REDUCED_SNAPSHOT" | jq -r '[ .components[] ] | length')
+    echo "COMPONENT_COUNT: ${COMPONENT_COUNT}"
+    if [ "${COMPONENT_COUNT}" != "1" ] ; then
+      echo "Error: Reduced Snapshot has ${COMPONENT_COUNT} components. It should contain 1"
+      echo "       Verify that the Snapshot contains the built component: ${SNAPSHOT_CREATION_COMPONENT}"
+      exit 1
+    fi
+
+    echo "Reducing Snapshot to:"
+    echo "$REDUCED_SNAPSHOT" | jq '.' | tee "${SNAPSHOT_PATH}"
+  fi
+fi