Dump MongoDB db at the end of scenarios

Issue: ZENKO-4898

.github/actions/archive-artifacts/action.yaml

@@ -42,3 +42,25 @@ runs:
             sh -c "kubectl exec -i -n ${NAMESPACE} kcat -- \
                        kcat -L -b ${KAFKA_SERVICE} -t {}  -C -o beginning -e -q -J \
                        > /tmp/artifacts/data/${STAGE}/kafka-messages-{}.log"
+    - name: Dump MongoDB
+      shell: bash
+      continue-on-error: true
+      run: |-
+        set -exu
+
+        ZENKO_MONGODB_DATABASE=${ZENKO_MONGODB_DATABASE:-zenko-database}
+        MONGODB_ROOT_USERNAME="${MONGODB_ROOT_USERNAME:-root}"
+        MONGODB_ROOT_PASSWORD="${MONGODB_ROOT_PASSWORD:-rootpass}"
+        NAMESPACE=${NAMESPACE:-default}
+
+        # Get the list of collections
+        MONGODB_COLLECTIONS=$(kubectl exec -n ${NAMESPACE} data-db-mongodb-sharded-mongos-0 -- mongo "${ZENKO_MONGODB_DATABASE}" -u "${MONGODB_ROOT_USERNAME}" -p "${MONGODB_ROOT_PASSWORD}" --authenticationDatabase admin --eval "db.getCollectionNames()" | grep -v '^__')
+
+        # Iterate over collections and dump them to log files using db.getCollection()
+        for collection in ${MONGODB_COLLECTIONS}; do
+            kubectl exec -n ${NAMESPACE} data-db-mongodb-sharded-mongos-0 -- mongo "${ZENKO_MONGODB_DATABASE}" -u "${MONGODB_ROOT_USERNAME}" -p "${MONGODB_ROOT_PASSWORD}" --authenticationDatabase admin --eval "db.getCollection('${collection}').find().toArray()" | jq -r '.' > /tmp/artifacts/data/${STAGE}/mongodb-${collection}.log
+        done
+
+        # Get full collection information and save to a log file (including system collections)
+        kubectl exec -n ${NAMESPACE} data-db-mongodb-sharded-mongos-0 -- mongo "${ZENKO_MONGODB_DATABASE}" -u "${MONGODB_ROOT_USERNAME}" -p "${MONGODB_ROOT_PASSWORD}" --authenticationDatabase admin --eval "db.getCollectionInfos()" | jq -r '.[] | .name + " " + (.count | tostring)' > /tmp/artifacts/data/${STAGE}/mongodb-collections.log
+