automatically set GOMEMLIMIT env variable

Signed-off-by: Pascal Sthamer <pascal+github@sthamer.xyz>

functions/kubernetes/charts/shuffle/templates/shuffle-worker/_helpers.tpl

@@ -131,17 +131,15 @@ http://shuffle-workers.{{ .Release.Namespace }}.svc.cluster.local
 {{/*
 Return the environment variables of shuffle-worker in the format
 KEY: VALUE
+
+WARNING: Do NOT add environment variables here that would conflict with shuffle.orborus.env.
+Orborus also sets all env variables that are defined here, because they will be passed down to worker when orborus.manageWorkerDeployments is set.
+Instead, add them directly to the deployment template (shuffle-worker-dpl.yaml).
 */}}
 {{- define "shuffle.workerInstance.env" -}}
-IS_KUBERNETES: "true"
-KUBERNETES_NAMESPACE: "{{ .Release.Namespace }}"
 SHUFFLE_SWARM_CONFIG: "run" # Shuffle Worker requires this to be set even when using K8s instead of swarm
-BASE_URL: {{ include "shuffle.backend.baseUrl" . | quote }}
 SHUFFLE_APP_EXPOSED_PORT: {{ .Values.app.exposedContainerPort | quote }}
 WORKER_HOSTNAME: {{ include "shuffle.worker.hostname" . }}
-{{- if .Values.worker.debug }}
-DEBUG: "true"
-{{- end }}
 
 {{- if .Values.worker.manageAppDeployments }}
 # Shuffle app images

functions/kubernetes/charts/shuffle/templates/shuffle-worker/shuffle-worker-dpl.yaml

@@ -85,6 +85,23 @@ spec:
           env:
             - name: CLEANUP
               value: "false" # Do not remove resources when restarting worker
+            - name: IS_KUBERNETES
+              value: "true"
+            - name: KUBERNETES_NAMESPACE
+              value: {{ .Release.Namespace | quote }}
+            - name: BASE_URL
+              value: {{ include "shuffle.backend.baseUrl" . | quote }}
+            {{- if .Values.worker.debug }}
+            - name: DEBUG
+              value: "true"
+            {{- end }}
+            {{- if .Values.worker.autoGOMEMLIMIT }}
+            {{- $workerResources := (.Values.worker.resources | default (include "common.resources.preset" (dict "type" .Values.worker.resourcesPreset) | fromYaml)) -}}
+            {{- if and $workerResources $workerResources.limits $workerResources.limits.memory }}
+            - name: GOMEMLIMIT
+              value: {{ include "shuffle.k8sMemoryLimitToGOMEMLIMIT" (dict "k8sMemoryLimit" $workerResources.limits.memory) | quote }}
+            {{- end }}
+            {{- end }}
             {{- $env := include "shuffle.workerInstance.env" . | fromYaml }}
             {{- range $key, $val := $env }}
             - name: {{ $key | quote }}