add kafdrop chart (#32)

charts/kafdrop/.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/kafdrop/.kube-linter.yaml

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+---
+checks:
+  exclude:
+    - (( prepend ))
+    - "run-as-non-root"

charts/kafdrop/Chart.yaml

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+apiVersion: v2
+name: kafdrop
+description: Unofficial Helm Chart for Kafdrop
+version: 0.2.3
+appVersion: 3.27.0
+type: application
+home: https://github.com/obsidiandynamics/kafdrop
+icon: https://raw.githubusercontent.com/wiki/obsidiandynamics/kafdrop/images/kafdrop-logo.png
+keywords:
+  - Apache Kafka
+  - Kafdrop
+  - Browsing
+maintainers:
+  - name: SRE
+    email: [email protected]
+dependencies:
+  - name: manifests
+    version: "~0.5.0"
+    repository: https://bedag.github.io/helm-charts/
+annotations:
+  artifacthub.io/containsSecurityUpdates: "false"
+  artifacthub.io/prerelease: "false"
+  artifacthub.io/images: |
+    - name: kafdrop
+      image: obsidiandynamics/kafdrop:3.27.0

charts/kafdrop/README.md.gotmpl

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+# kafdrop
+
+{{ template "chart.deprecationWarning" . }}
+
+{{ template "chart.versionBadge" . }}{{ template "chart.typeBadge" . }}
+
+{{ template "chart.description" . }}
+
+The chart is under active development and may contain bugs/unfinished documentation. Any testing/contributions are welcome! :)
+
+{{ template "chart.homepageLine" . }}
+
+{{/*
+  Chart Maintainers
+*/}}
+{{ template "chart.maintainersSection" . }}
+
+{{/*
+  Chart Sources
+*/}}
+{{ template "chart.sourcesSection" . }}
+
+{{/*
+  Chart Requirements
+*/}}
+{{ template "chart.requirementsSection" . }}
+
+# Major Changes
+
+Major Changes to functions are documented with the version affected. **Before upgrading the dependency version, check this section out!**
+
+| **Change** | **Chart Version** | **Description** | **Commits/PRs** |
+| :--------- | :---------------- | :-------------- | :-------------- |
+|||||
+
+{{/*
+  Chart Values
+*/}}
+{{ template "chart.valuesSection" . }}

charts/kafdrop/templates/_kafdrop.tpl

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+{{/*
+
+Copyright © 2021 Bedag Informatik AG
+
+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.
+*/}}
+{{/*
+  Kafdrop Configuration
+  Renders Broker Connections correctly, if they are type slice, Handles the default, when it's already a single string
+*/}}
+{{- define "kafdrop.connections" -}}
+    {{- $connections := $.Values.config.kafka.connections -}}
+    {{- if kindIs "slice" $.Values.config.kafka.connections }}
+        {{- $connections = ($.Values.config.kafka.connections | join ", ") -}}
+    {{- end }}
+    {{- printf "%s" $connections -}}
+{{- end }}
+
+{{/*
+  Kafdrop Configuration
+  Renders Broker Connections correctly, if they are type slice, Handles the default, when it's already a single string
+*/}}
+{{- define "kafdrop.jvmopts" -}}
+    {{- $jvmopts := $.Values.config.jvm -}}
+    {{- if kindIs "slice" $.Values.config.jvm }}
+        {{- $jvmopts = ($.Values.config.jvm | join " ") -}}
+    {{- end }}
+    {{- printf "%s" $jvmopts -}}
+{{- end -}}
+
+{{/*
+  Kafdrop Configuration Merges Commandline Arguments with Protocol Path, if defined
+*/}}
+{{- define "kafdrop.protobuf" -}}
+{{- if $.Values.config.protoDesc.enabled -}} --message.format=PROTOBUF --protobufdesc.directory={{- $.Values.config.protoDesc.path -}} {{- end -}}
+{{- end -}}
+
+{{/*
+  Kafdrop Configuration
+  Merges Commandline Arguments with Protocol Path, if defined
+*/}}
+{{- define "kafdrop.cmdArgs" -}}
+    {{- if $.Values.config.cmdArgs }}
+        {{- $args := $.Values.config.cmdArgs -}}
+        {{- if kindIs "slice" $.Values.config.cmdArgs }}
+            {{- $args = ($.Values.config.cmdArgs| join " ") -}}
+        {{- end }}
+        {{- printf "%s %s" $args (include "kafdrop.protobuf" .) -}}
+    {{- end }}
+{{- end -}}
+
+{{- define "kafdrop.endpoint" }}
+{{- $.Values.config.server.context | trimSuffix "/" | nospace }}/actuator/health
+{{- end }}
+
+
+{{/*
+  Kafdrop Environment Configuration
+*/}}
+{{- define "kafdrop.configuration" -}}
+- name: KAFKA_BROKERCONNECT
+  value: "{{ template "kafdrop.connections" . }}"
+- name: JVM_OPTS
+  value: "{{ template "kafdrop.jvmopts" . }}"
+- name: SERVER_SERVLET_CONTEXT_PATH
+  value: "{{ $.Values.config.server.context }}"
+- name: SERVER_PORT
+  value: "{{ $.Values.config.server.port }}"
+- name: CMD_ARGS
+  value: "{{ template "kafdrop.cmdArgs" . }}"
+  {{- if $.Values.config.kafka.properties.content }}
+- name: KAFKA_PROPERTIES
+  secret: true
+  value: {{ include "lib.utils.strings.template" (dict "value" .Values.config.kafka.properties.content "context" $) }}
+  {{- end }}
+- name: KAFKA_PROPERTIES_FILE
+  value: "{{ $.Values.config.kafka.properties.destination }}"
+  {{- if $.Values.config.kafka.truststore.content }}
+- name: KAFKA_TRUSTSTORE
+  secret: true
+  value: {{ include "lib.utils.strings.template" (dict "value" .Values.config.kafka.truststore.content "context" $) }}
+  {{- end }}
+- name: KAFKA_TRUSTSTORE_FILE
+  value: "{{ $.Values.config.kafka.truststore.destination }}"
+  {{- if $.Values.config.kafka.keystore.content }}
+- name: KAFKA_KEYSTORE
+  secret: true
+  value: {{ include "lib.utils.strings.template" (dict "value" .Values.config.kafka.keystore.content "context" $) }}
+  {{- end }}
+- name: KAFKA_KEYSTORE_FILE
+  value: "{{ $.Values.config.kafka.keystore.destination }}"
+  {{- if $.Values.jmxExporter.enabled }}
+- name: JMX_PORT
+  value: "{{ $.Values.jmxExporter.targetPort }}"
+  {{- end }}
+{{- end -}}

charts/kafdrop/templates/bundle.yaml

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+{{/*
+
+Copyright © 2021 Bedag Informatik AG
+
+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.
+*/}}
+
+{{- include "bedag-lib.manifest.bundle" $ | nindent 0 }}
+
+{{/*
+  kafdrop Chart Bundle
+*/}}
+{{- define "chart.bundle" -}}
+resources:
+  {{- if $.Values.extraResources }}
+    {{- toYaml $.Values.extraResources | nindent 2 }}
+  {{- end }}
+
+  {{ $jmxExporter := (fromYaml (include "bedag-lib.utils.presets" (dict "preset" "jmxexporter" "values" $.Values.jmxExporter "context" $))) }}
+  {{- if $jmxExporter.extraResources }}
+    {{- toYaml $jmxExporter.extraResources | nindent 2 }}
+  {{- end }}
+
+  - type: "deployment"
+    values: {{ toYaml $.Values.deployment | nindent 6 }}
+    overwrites:
+      podAnnotations:
+        checksum/config: {{ (toYaml $.Values.config) | sha256sum }}
+
+      environment: {{- include "kafdrop.configuration" $ | nindent 8 }}
+        {{- if $.Values.deployment.environment }}
+          {{ include "lib.utils.lists.exceptionList" (dict "list" $.Values.deployment.environment  "exceptions" (list "KAFKA_BROKERCONNECT" "JVM_OPTS")) | nindent 8 }}
+        {{- end }}
+
+      {{/*
+        Predefined Ports
+      */}}
+      ports:
+        {{- if $.Values.deployment.ports }}
+          {{- toYaml $.Values.deployment.ports | nindent 8 }}
+        {{- end }}
+        - name: http
+          containerPort: {{ $.Values.config.server.port }}
+          protocol: TCP
+        {{- if $jmxExporter.ports }}
+          {{- toYaml $jmxExporter.ports | nindent 8 }}
+        {{- end }}
+
+      {{/*
+        Predefined Statefulset Volumes
+      */}}
+      {{- if or $.Values.deployment.volumes $jmxExporter.volumes }}
+      volumes:
+        {{- if $.Values.deployment.volumes }}
+          {{- toYaml $.Values.deployment.volumes | nindent 8 }}
+        {{- end }}
+        {{- if $jmxExporter.volumes }}
+          {{- toYaml $jmxExporter.volumes | nindent 8 }}
+        {{- end }}
+      {{- end }}
+
+      {{/*
+        Predefined Statefulset Sidecars
+      */}}
+      {{- if or $jmxExporter.container $.Values.deployment.sidecars }}
+      sidecars:
+        {{- if $.Values.deployment.sidecars }}
+          {{- toYaml $.Values.deployment.sidecars | nindent 8 }}
+        {{- end }}
+        {{- if $jmxExporter.container }}
+        - {{- toYaml $jmxExporter.container | nindent 10 }}
+        {{- end }}
+      {{- end }}
+
+  - type: "service"
+    values: {{ toYaml $.Values.service | nindent 6 }}
+
+  - type: "ingress"
+    values: {{ toYaml $.Values.ingress | nindent 6 }}
+
+  {{- if (gt (int $.Values.deployment.replicaCount) 1) }}
+  - type: "poddisruptionbudget"
+    values: {{ toYaml $.Values.pdb | nindent 6 }}
+  {{- end }}
+  - type: "horizontalpodautoscaler"
+    values: {{ toYaml $.Values.autoscaling | nindent 6 }}
+    overwrites:
+      scaleTargetRef:
+        apiVersion: apps/v1
+        kind: Statefulset
+        name: '{{ include "lib.utils.common.fullname" $ }}'
+{{- end -}}