helm-chart/templates/loadgenerator.yaml

# Copyright 2022 Google LLC
#
# 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.

{{- if .Values.loadGenerator.create }}
{{- if .Values.serviceAccounts.create }}
apiVersion: v1
kind: ServiceAccount
metadata:
  name: {{ .Values.loadGenerator.name }}
  namespace: {{.Release.Namespace}}
  {{- if not .Values.serviceAccounts.annotationsOnlyForCartservice }}
  {{- with .Values.serviceAccounts.annotations }}
  annotations:
    {{- toYaml . | nindent 4 }}
  {{- end }}
  {{- end }}
---
{{- end }}
apiVersion: apps/v1
kind: Deployment
metadata:
  name: {{ .Values.loadGenerator.name }}
  namespace: {{ .Release.Namespace }}
  labels:
    app: {{ .Values.loadGenerator.name }}
spec:
  selector:
    matchLabels:
      app: {{ .Values.loadGenerator.name }}
  replicas: 1
  template:
    metadata:
      labels:
        app: {{ .Values.loadGenerator.name }}
      annotations:
        sidecar.istio.io/rewriteAppHTTPProbers: "true"
    spec:
      {{- if .Values.serviceAccounts.create }}
      serviceAccountName: {{ .Values.loadGenerator.name }}
      {{- else }}
      serviceAccountName: default
      {{- end }}
      terminationGracePeriodSeconds: 5
      restartPolicy: Always
      {{- if .Values.securityContext.enable }}
      securityContext:
        fsGroup: 1000
        runAsGroup: 1000
        runAsNonRoot: true
        runAsUser: 1000
        {{- if .Values.seccompProfile.enable }}
        seccompProfile:
          type: {{ .Values.seccompProfile.type }}
        {{- end }}
      {{- end }}
      {{- if .Values.loadGenerator.checkFrontendInitContainer }}
      initContainers:
      - command:
        - /bin/sh
        - -exc
        - |
          MAX_RETRIES=12
          RETRY_INTERVAL=10
          for i in $(seq 1 $MAX_RETRIES); do
            echo "Attempt $i: Pinging frontend: ${FRONTEND_ADDR}..."
            STATUSCODE=$(wget --server-response http://${FRONTEND_ADDR} 2>&1 | awk '/^  HTTP/{print $2}')
            if [ $STATUSCODE -eq 200 ]; then
                echo "Frontend is reachable."
                exit 0
            fi
            echo "Error: Could not reach frontend - Status code: ${STATUSCODE}"
            sleep $RETRY_INTERVAL
          done
          echo "Failed to reach frontend after $MAX_RETRIES attempts."
          exit 1
        name: frontend-check
        securityContext:
          allowPrivilegeEscalation: false
          capabilities:
            drop:
              - ALL
          privileged: false
          readOnlyRootFilesystem: true
        image: busybox:latest@sha256:37f7b378a29ceb4c551b1b5582e27747b855bbfaa73fa11914fe0df028dc581f
        env:
        - name: FRONTEND_ADDR
          value: "{{ .Values.frontend.name }}:80"
      {{- end }}
      containers:
      - name: main
        securityContext:
          allowPrivilegeEscalation: false
          capabilities:
            drop:
              - ALL
          privileged: false
          readOnlyRootFilesystem: true
        image: {{ .Values.images.repository }}/{{ .Values.loadGenerator.name }}:{{ .Values.images.tag | default .Chart.AppVersion }}
        env:
        - name: FRONTEND_ADDR
          value: "{{ .Values.frontend.name }}:80"
        - name: USERS
          value: "10"
        - name: RATE
          value: "1"
        resources:
          {{- toYaml .Values.loadGenerator.resources | nindent 10 }}
{{- if .Values.networkPolicies.create }}
---
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: {{ .Values.loadGenerator.name }}
  namespace: {{ .Release.Namespace }}
  labels:
    app: {{ .Values.loadGenerator.name }}
spec:
  podSelector:
    matchLabels:
      app: {{ .Values.loadGenerator.name }}
  policyTypes:
  - Egress
  egress:
  - {}
{{- end }}
{{- if .Values.sidecars.create }}
---
apiVersion: networking.istio.io/v1beta1
kind: Sidecar
metadata:
  name: {{ .Values.loadGenerator.name }}
  namespace: {{ .Release.Namespace }}
spec:
  workloadSelector:
    labels:
      app: {{ .Values.loadGenerator.name }}
  egress:
  - hosts:
    - istio-system/*
    - ./{{ .Values.frontend.name }}.{{ .Release.Namespace }}.svc.cluster.local
    {{- if .Values.opentelemetryCollector.create }}
    - ./{{ .Values.opentelemetryCollector.name }}.{{ .Release.Namespace }}.svc.cluster.local
    {{- end }}
{{- end }}
{{- end }}