Normalize GKE identifiers in snippets

Author: lsierant

scripts/dev/contexts/funcs/gke

@@ -0,0 +1,30 @@
+# Function to normalize identifier for K8s naming requirements
+normalize_identifier() {
+    local str=$1
+    local max_len=$(($2 - 1))
+
+    # Convert to lowercase and replace invalid characters with hyphens
+    str=$(echo -n "${str}" | tr '[:upper:]_' '[:lower:]-' | sed 's/[^a-z0-9-]/-/g')
+    # Ensure it ends with alphanumeric
+
+    # Truncate to ${max_len} chars by cutting from middle
+    if [[ ${#str} -gt ${max_len} ]]; then
+        half_idx=$((max_len / 2 - 1))
+        local start_part="${str:0:${half_idx}}"
+        local end_part="${str: -${half_idx}}"
+        str="${start_part}x${end_part}"
+    fi
+
+    [[ ${str} =~ -$ ]] && str="${str}0"
+    echo -n "${str}"
+}
+
+# for prerelease builds we have:
+# version_id=mongodb_kubernetes_1.4.0_68c913f767d52d00076a2698-9041 (len=54)
+# k8s cluster name prefix is: k8s-mdb-0- (len=10)
+# K8S_CLUSTER_PREFIX must be shorter than 30 to make the final
+# gke identifier shorter than 40 characters
+create_k8s_cluster_suffix() {
+  echo -n "$(normalize_identifier "${K8S_CLUSTER_SUFFIX:-"-${version_id}-${RANDOM}"}" 28)"
+}
+

scripts/dev/contexts/prerelease_gke_code_snippets

@@ -8,9 +8,12 @@ script_name=$(readlink -f "${BASH_SOURCE[0]}")
 script_dir=$(dirname "${script_name}")
 
 source "${script_dir}/root-context"
+source "${script_dir}/funcs/gke"
+K8S_CLUSTER_SUFFIX="$(create_k8s_cluster_suffix)"
+export K8S_CLUSTER_SUFFIX
 
 export MDB_GKE_PROJECT="scratch-kubernetes-team"
-export K8S_CLUSTER_SUFFIX="${K8S_CLUSTER_SUFFIX:-"-${version_id}-${RANDOM}"}"
+
 export CODE_SNIPPETS_COMMIT_OUTPUT=true
 
 # we reset evg host to use a default ~/.kube/config for GKE instead of the one from evg host

scripts/dev/contexts/private_gke_code_snippets

@@ -10,10 +10,13 @@ script_dir=$(dirname "${script_name}")
 source "${script_dir}/root-context"
 source "${script_dir}/variables/om80"
 
+source "${script_dir}/funcs/gke"
+K8S_CLUSTER_SUFFIX="$(create_k8s_cluster_suffix)"
+export K8S_CLUSTER_SUFFIX
+
 export KUBE_ENVIRONMENT_NAME=multi
 
 export MDB_GKE_PROJECT="scratch-kubernetes-team"
-export K8S_CLUSTER_SUFFIX="${K8S_CLUSTER_SUFFIX:-"-${version_id}-${RANDOM}"}"
 
 # we reset evg host to use a default ~/.kube/config for GKE instead of the one from evg host
 export EVG_HOST_NAME=""

scripts/dev/contexts/public_gke_code_snippets

@@ -9,11 +9,13 @@ script_dir=$(dirname "${script_name}")
 
 source "${script_dir}/root-context"
 
+source "${script_dir}/funcs/gke"
+K8S_CLUSTER_SUFFIX="$(create_k8s_cluster_suffix)"
+export K8S_CLUSTER_SUFFIX
+
 export KUBE_ENVIRONMENT_NAME=multi
 
 export MDB_GKE_PROJECT="scratch-kubernetes-team"
-# shellcheck disable=SC2154
-export K8S_CLUSTER_SUFFIX="${K8S_CLUSTER_SUFFIX:-"-${version_id}-${RANDOM}"}"
 
 # we reset evg host to use a default ~/.kube/config for GKE instead of the one from evg host
 export EVG_HOST_NAME=""