initial commit

servflow/.helmignore

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+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*.orig
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/

servflow/Chart.lock

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+dependencies:
+- name: ingress-nginx
+  repository: https://kubernetes.github.io/ingress-nginx
+  version: 4.11.2
+digest: sha256:ab93695e04dab546906b6bad42e147fa538237f6a52a5b3cceff14fc287d4268
+generated: "2024-10-02T06:05:05.964658+01:00"

servflow/Chart.yaml

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+apiVersion: v2
+name: servflow
+description: Helm chart for the helm deployment
+
+# A chart can be either an 'application' or a 'library' chart.
+#
+# Application charts are a collection of templates that can be packaged into versioned archives
+# to be deployed.
+#
+# Library charts provide useful utilities or functions for the chart developer. They're included as
+# a dependency of application charts to inject those utilities and functions into the rendering
+# pipeline. Library charts do not define any templates and therefore cannot be deployed.
+type: application
+
+# This is the chart version. This version number should be incremented each time you make changes
+# to the chart and its templates, including the app version.
+# Versions are expected to follow Semantic Versioning (https://semver.org/)
+version: 1.1.0
+
+# This is the version number of the application being deployed. This version number should be
+# incremented each time you make changes to the application. Versions are not expected to
+# follow Semantic Versioning. They should reflect the version the application is using.
+# It is recommended to use it with quotes.
+appVersion: "1.2.1"

servflow/templates/NOTES.txt

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+HAVE FUN!

servflow/templates/_helpers.tpl

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+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "servflow.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Create a default fully qualified app name.
+We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
+If release name contains chart name it will be used as a full name.
+*/}}
+{{- define "servflow.fullname" -}}
+{{- if .Values.fullnameOverride }}
+{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- $name := default .Chart.Name .Values.nameOverride }}
+{{- if contains $name .Release.Name }}
+{{- .Release.Name | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" }}
+{{- end }}
+{{- end }}
+{{- end }}
+
+{{/*
+Create chart name and version as used by the chart label.
+*/}}
+{{- define "servflow.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "servflow.labels" -}}
+helm.sh/chart: {{ include "servflow.chart" . }}
+{{ include "helm.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "servflow.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create }}
+{{- default (include "servflow.fullname" .) .Values.serviceAccount.name }}
+{{- else }}
+{{- default "default" .Values.serviceAccount.name }}
+{{- end }}
+{{- end }}

servflow/templates/deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: servflow-engine
+  labels:
+    app: servflow-engine
+spec:
+  selector:
+    matchLabels:
+      app: servflow-engine
+  template:
+    metadata:
+      labels:
+        app: servflow-engine
+    spec:
+      {{ if .Values.persistence.enabled }}
+      volumes:
+        - name: data-volume
+          persistentVolumeClaim:
+            claimName: servflow-engine-pvc
+      {{ end }}
+      imagePullSecrets:
+        - name: regcred
+      containers:
+        - name: servflow
+          resources:
+            limits:
+              memory: 50Mi
+          image: "servflow/servflow:v1.2.1"
+          {{ if .Values.persistence.enabled }}
+          volumeMounts:
+            - name: data-volume
+              mountPath: {{ .Values.persistence.storage.mountPath }}
+          {{ end }}
+          ports:
+            - name: http
+              containerPort: 80
+              protocol: TCP
+          env:
+            - name: SERVFLOW_PORT
+              value: "80"
+            - name: SERVFLOW_APPSERVERURL
+              value: "{{ .Values.engine.environment }}-grpc-server-service.default.svc.cluster.local:50051"
+            - name: SERVFLOW_LOGLEVEL
+              value: {{ .Values.engine.environment }}
+            - name: SERVFLOW_APIKEY
+              value: {{ .Values.general.apikey }}
+            - name: SERVFLOW_REDIS_CONNECTIONSTRING
+              valueFrom:
+                secretKeyRef:
+                  key: redis-url
+                  name: redis-secret
+            - name: KEDA_REDIS_ADDRESS
+              valueFrom:
+                secretKeyRef:
+                  name: redis-secret
+                  key: redis-address
+            - name: SERVFLOW_OTEL_ENABLED
+              value: "true"
+            - name: SERVFLOW_OTEL_ADDRESS
+              value: jaeger-service.default.svc.cluster.local:4317
+              {{ if .Values.persistence.enabled }}
+            - name: SERVFLOW_STORAGE_PATH
+              value: {{ .Values.persistence.storage.mountPath }}
+              {{ end}}
+        - name: scalersignal-consumer
+          resources:
+            limits:
+              memory: 10Mi
+          image: servflow/scalersignal-consumer:v0.1.3
+          env:
+            - name: REDIS_ADDR
+              valueFrom:
+                secretKeyRef:
+                  key: redis-url
+                  name: redis-secret
+            - name: SUBDOMAIN
+              value: {{ .Values.general.subdomain }}
+
+---
+{{ if .Values.persistence.enabled }}
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: servflow-engine-pvc
+spec:
+  accessModes:
+    {{ range .Values.persistence.storage.accessModes }}
+    - {{ . }}
+    {{ end }}
+  resources:
+    requests:
+      storage: {{ .Values.persistence.storage.size }}
+  {{ if .Values.persistence.storage.storageClassName }}
+  storageClassName: {{ .Values.persistence.storage.storageClassName }}
+  {{ end }}
+{{ end }}

servflow/templates/ingress.yaml

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+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: servflow-engine
+spec:
+  rules:
+    - host: {{ .Values.general.domain }}
+      http:
+        paths:
+          - path: /
+            pathType: Prefix
+            backend:
+              service:
+                name: servflow-engine-service
+                port:
+                  number: 80

servflow/templates/scaler.yaml

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+apiVersion: keda.sh/v1alpha1
+kind: TriggerAuthentication
+metadata:
+  name: keda-redis-stream-triggerauth
+spec:
+  secretTargetRef:
+    - parameter: username
+      name: redis-secret
+      key: redis-username
+    - parameter: password
+      name: redis-secret
+      key: redis-password
+---
+apiVersion: keda.sh/v1alpha1
+kind: ScaledObject
+metadata:
+  name: redis-streams-scaledobject
+spec:
+  scaleTargetRef:
+    name: servflow-engine
+  pollingInterval: 5
+  cooldownPeriod: 300
+  maxReplicaCount: 1
+  minReplicaCount: 0
+  triggers:
+    - type: redis-streams
+      metadata:
+        addressFromEnv: KEDA_REDIS_ADDRESS
+        stream: "proxy_requests:{{ .Values.general.subdomain }}"
+        streamLength: "1"
+      authenticationRef:
+        name: keda-redis-stream-triggerauth # name of the TriggerAuthentication resource

servflow/templates/service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: servflow-engine-service
+  labels:
+    app: servflow-engine
+spec:
+  type: ClusterIP
+  ports:
+    - port: 80
+      targetPort: http
+      protocol: TCP
+      name: http
+  selector:
+    app: servflow-engine

servflow/values.yaml

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+# Default values for helm.
+# This is a YAML-formatted file.
+# Declare variables to be passed into your templates.
+
+# This will set the replicaset count more information can be found here: https://kubernetes.io/docs/concepts/workloads/controllers/replicaset/
+replicaCount: 1
+
+general:
+  apikey: ""
+  domain: ""
+  subdomain: ""
+
+engine:
+  environment: "staging"
+  redisURL: ""
+
+persistence:
+  enabled: true
+  storage:
+    size: 10Mi
+    mountPath: "/data/servflow"
+    accessModes:
+      - ReadWriteOnce
+    storageClassName: "do-block-storage"