add opentelemetry-demo chart

charts/opentelemetry-demo/.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/

charts/opentelemetry-demo/Chart.yaml

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+apiVersion: v2
+type: application
+name: opentelemetry-demo
+version: 0.1.0
+description: opentelemetry demo helm chart
+home: https://opentelemetry.io/
+sources:
+  - https://github.com/open-telemetry/opentelemetry-demo
+maintainers:
+  - name: dmitryax
+  - name: tylerhelmuth
+  - name: wph95
+icon: https://opentelemetry.io/img/logos/opentelemetry-logo-nav.png
+appVersion: "0.2.0-alpha"

charts/opentelemetry-demo/README.md

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+# OpenTelemetry Demo Helm Chart
+
+The helm chart installs [OpenTelemetry Demo](https://github.com/open-telemetry/opentelemetry-demo)
+in kubernetes cluster.
+
+## Prerequisites
+
+- Helm 3.0+
+
+## Installing the Chart
+
+Add OpenTelemetry Helm repository:
+
+```console
+helm repo add open-telemetry https://open-telemetry.github.io/opentelemetry-helm-charts
+```
+
+To install the chart with the release name my-otel-demo, run the following command:
+
+```console
+helm install my-otel-demo open-telemetry/opentelemetry-demo
+```

charts/opentelemetry-demo/templates/NOTES.txt

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+=======================================================================================
+
+
+ ██████╗ ████████╗███████╗██╗         ██████╗ ███████╗███╗   ███╗ ██████╗ 
+██╔═══██╗╚══██╔══╝██╔════╝██║         ██╔══██╗██╔════╝████╗ ████║██╔═══██╗
+██║   ██║   ██║   █████╗  ██║         ██║  ██║█████╗  ██╔████╔██║██║   ██║
+██║   ██║   ██║   ██╔══╝  ██║         ██║  ██║██╔══╝  ██║╚██╔╝██║██║   ██║
+╚██████╔╝   ██║   ███████╗███████╗    ██████╔╝███████╗██║ ╚═╝ ██║╚██████╔╝
+ ╚═════╝    ╚═╝   ╚══════╝╚══════╝    ╚═════╝ ╚══════╝╚═╝     ╚═╝ ╚═════╝ 
+
+
+- Frontend UI: http://localhost:8080
+  by running these commands:
+     kubectl port-forward svc/{{ include "otel-demo.name" . }}-frontend 8080:8080
+
+
+{{- if $.Values.observability.jaeger.enabled }}
+
+- Jaeger UI: http://localhost:16686
+  by running these commands:
+     kubectl port-forward svc/{{ include "otel-demo.name" . }}-jaeger 16686:16686
+{{- end }}

charts/opentelemetry-demo/templates/_deployment.tpl

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+{{- define "otel.demo.deployment" }}
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "otel-demo.name" . }}-{{ .name }}
+  labels:
+    {{- include "otel-demo.labels" . | nindent 4 }}
+spec:
+  selector:
+    matchLabels:
+      {{- include "otel-demo.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      labels:
+        {{- include "otel-demo.selectorLabels" . | nindent 8 }}
+    spec:
+      {{- if .imageConfig.pullSecrets }}
+      imagePullSecrets:
+        {{- toYaml .imageConfig.pullSecrets | nindent 8}}
+      {{- end }}
+      {{- with .serviceAccountName }}
+      serviceAccountName: {{ .serviceAccountName}} 
+      {{- end }}
+      containers:
+        - name: {{ .name }}
+          image: {{ .image | default (printf "%s:v%s-%s" .imageConfig.repository .Chart.AppVersion (.name | replace "-" "" | lower)) }}
+          {{- if or .ports .servicePort}}
+          ports:
+            {{- include "otel-demo.pod.ports" . | nindent 10 }}
+          {{- end }}
+          env:
+            {{- include "otel-demo.pod.env" . | nindent 10 }}
+
+{{- end }}

charts/opentelemetry-demo/templates/_helpers.tpl

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+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "otel-demo.name" -}}
+{{- default .Release.Name | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Create chart name and version as used by the chart label.
+*/}}
+{{- define "otel-demo.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "otel-demo.labels" -}}
+helm.sh/chart: {{ include "otel-demo.chart" . }}
+{{ include "otel-demo.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "otel-demo.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "otel-demo.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- if .name }}
+app.kubernetes.io/component: {{ .name}}
+{{- end}}
+{{- end }}

charts/opentelemetry-demo/templates/_pod.tpl

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+{{/*
+Component Depends Config
+*/}}
+{{- define "otel-demo.pod.dependsConfig" -}}
+cart-service:
+  - redis
+checkout-service:
+  - cart-service
+  - currency-service
+  - email-service
+  - payment-service
+  - product-catalog-service
+  - shipping-service
+frontend:
+  - ad-service
+  - cart-service
+  - checkout-service
+  - currency-service
+  - product-catalog-service
+  - recommendation-service
+  - shipping-service
+loadgenerator:
+  - frontend
+recommendation-service:
+  - product-catalog-service
+{{- end}}
+
+
+{{/*
+Get Services Port Mapping
+*/}}
+{{- define "otel-demo.pod.serviceMapping" -}}
+{{ $servicePortMap := default dict }}
+{{- range $name, $config := .Values.components }}
+    {{- if $config.servicePort }}
+    {{ $name | kebabcase }}: {{ $config.servicePort }}
+    {{- else if $config.ports }}
+    {{ $name | kebabcase}}: {{ (get (index $config.ports 0 ) "value") }}
+    {{- end }}
+{{- end }}
+{{- end }}
+
+{{/*
+Get Pod Env 
+*/}}
+{{- define "otel-demo.pod.env" -}}
+{{- $prefix := include "otel-demo.name" $ }}
+
+{{- if .env }}
+{{- toYaml .env }}
+{{- end }}
+
+{{- if .observability.otelcol.enabled }} 
+- name: OTEL_EXPORTER_OTLP_ENDPOINT
+  value: http://{{ include "otel-demo.name" . }}-otelcol:4317
+- name: OTEL_RESOURCE_ATTRIBUTES
+  value: service.name={{ .name | kebabcase }}
+{{- end }}
+
+{{- if .servicePort}}
+- name: {{ printf "%s_PORT" .name | snakecase | upper }}
+  value: {{.servicePort | quote}} 
+{{- end }}
+
+# {{ $.depends }}
+# {{ .name }}
+{{- if hasKey $.depends .name }}
+{{- range $depend := get $.depends .name }}
+- name: {{ printf "%s_ADDR" $depend | snakecase | upper }}
+  value: {{ printf "%s-%s:%0.f" $prefix ($depend | kebabcase) (get $.serviceMapping $depend )}}
+{{- end }}
+{{- end }}
+
+{{- end }}
+
+{{/*
+Get Pod ports 
+*/}}
+{{- define "otel-demo.pod.ports" -}}
+{{- if .ports }}
+{{- range $port := .ports }}
+- containerPort: {{ $port.value }}
+  name: {{ $port.name}}
+{{- end }}
+{{- end }}
+
+{{- if .servicePort }}
+- containerPort: {{.servicePort}}
+  name: service
+{{- end }}
+{{- end }}

charts/opentelemetry-demo/templates/component.yaml

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+{{ $serviceMapping := include "otel-demo.pod.serviceMapping" . | fromYaml}}
+{{ $depends := include "otel-demo.pod.dependsConfig" . | fromYaml }}
+{{- range $name, $config := .Values.components }}
+    {{- $config := set . "name" ($name | kebabcase) }}
+    {{- $config := set . "Release" $.Release }}
+    {{- $config := set . "Chart" $.Chart }}
+    {{- $config := set . "imageConfig" $.Values.image }}
+    {{- $config := set . "serviceAccount" $.Values.serviceAccount }}
+    {{- $config := set . "observability" $.Values.observability }}
+    {{- $config := set . "serviceMapping" $serviceMapping }}
+    {{- $config := set . "depends" $depends }}
+
+    {{- if $config.enabled -}}
+        {{- include "otel.demo.deployment" $config -}}
+        {{- include "otel.demo.service" $config -}}
+    {{ end }}
+
+{{- end }}

charts/opentelemetry-demo/templates/jaeger.yaml

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+{{- $config := set . "name" "jaeger" }}
+{{- if $.Values.observability.jaeger.enabled -}}
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "otel-demo.name" . }}-{{ .name }}
+  labels:
+    {{- include "otel-demo.labels" . | nindent 4 }}
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      {{- include "otel-demo.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      labels:
+        {{- include "otel-demo.selectorLabels" . | nindent 8 }}
+    spec:
+      containers:
+      - env:
+        - name: COLLECTOR_ZIPKIN_HTTP_PORT
+          value: "9411"
+        image: jaegertracing/all-in-one
+        name: jaeger
+        ports:
+          - containerPort: 5775
+            protocol: UDP
+          - containerPort: 6831
+            protocol: UDP
+          - containerPort: 6832
+            protocol: UDP
+          - containerPort: 5778
+            protocol: TCP
+          - containerPort: 16686
+            protocol: TCP
+          - containerPort: 14268 
+            protocol: TCP
+          - containerPort: 9411
+            protocol: TCP
+          - containerPort: 14250
+            protocol: TCP
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "otel-demo.name" . }}-{{ .name }}
+  labels:
+    {{- include "otel-demo.labels" . | nindent 4 }}
+spec:
+  ports:
+    - name: frontend
+      port: 16686
+      protocol: TCP
+      targetPort: 16686
+    - name: collector
+      port: 14250
+      protocol: TCP
+      targetPort: 14250
+  selector:
+      {{- include "otel-demo.selectorLabels" . | nindent 4 }}
+{{- end }}