add k8s/helm support

.github/workflows/docker.yml

@@ -0,0 +1,38 @@
+name: CI/CD
+on:
+  push:
+    tags:
+      - '*'
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  push-docker:
+    runs-on: ubuntu-latest
+    steps:
+    - name: checkout code
+      uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
+    - name: Log in to the Container registry
+      uses: docker/login-action@65b78e6e13532edd9afa3aa52ac7964289d1a9c1
+      with:
+        registry: ${{ env.REGISTRY }}
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Extract metadata (tags, labels) for Docker
+      id: meta
+      uses: docker/metadata-action@9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7
+      with:
+        images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+
+    - name: Build and push Docker image
+      uses: docker/build-push-action@f2a1d5e99d037542a71f64918e516c093c6f3fc4
+      with:
+        context: .
+        push: true
+        tags: ${{ steps.meta.outputs.tags }}
+        labels: ${{ steps.meta.outputs.labels }}

.github/workflows/release.yml

@@ -0,0 +1,28 @@
+name: CI/CD
+on:
+  push:
+    branches:
+      - master
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  release-chart:
+    runs-on: ubuntu-latest
+    steps:
+    - name: checkout code
+      uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
+    - name: Configure Git
+      run: |
+        git config user.name "$GITHUB_ACTOR"
+        git config user.email "$GITHUB_ACTOR@users.noreply.github.com"
+    - name: Run chart-releaser
+      uses: helm/chart-releaser-action@v1.5.0
+      with:
+        charts_dir: charts
+      env:
+        CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"

Dockerfile

@@ -0,0 +1,17 @@
+FROM golang:alpine as build
+
+WORKDIR /app
+
+COPY go.mod go.mod
+COPY go.sum go.sum
+RUN go mod download
+
+COPY . .
+
+RUN go build -o announcer
+
+FROM alpine
+WORKDIR /announcer
+COPY --from=build /app/announcer /bin/announcer
+
+ENTRYPOINT [ "/bin/announcer" ]

announcements/announcements.go

@@ -3,6 +3,7 @@ package announcements
 import (
 	"context"
 	"fmt"
+	"regexp"
 	"strings"
 	"time"
 
@@ -111,10 +112,21 @@ func remove(im *imap.Dialer, uids []int) error {
 	return err
 }
 
+var bracketLinkRe = regexp.MustCompile(`\[((https?://)([^\]]*[^\\\]]))\]\((https?://[^)]*[^\\)])\)`)
+
 var converter = md.NewConverter("", true, &md.Options{
 	HeadingStyle:    "setext",
 	StrongDelimiter: "**",
 	LinkStyle:       "inlined",
+}).After(func(content string) string {
+	return bracketLinkRe.ReplaceAllStringFunc(content, func(bracketLink string) string {
+		matches := bracketLinkRe.FindStringSubmatch(bracketLink)
+		text, textNoSchema, link := matches[1], matches[3], matches[4]
+		if text == link {
+			return "<" + link + ">"
+		}
+		return fmt.Sprintf("[%s](%s)", textNoSchema, link)
+	})
 })
 
 // markdownBody takes a html string and converts it into a formatted markdown body.

charts/noncer/Chart.yaml

@@ -0,0 +1,24 @@
+apiVersion: v2
+name: noncer
+description: A Helm chart for the go announcements bot
+
+# 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: 0.1.1
+
+# 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: "0.0.2"

charts/noncer/templates/NOTES.txt

@@ -0,0 +1 @@
+dr-docso deployed!

charts/noncer/templates/_helpers.tpl

@@ -0,0 +1,62 @@
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "noncer.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 "noncer.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 "noncer.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "noncer.labels" -}}
+helm.sh/chart: {{ include "noncer.chart" . }}
+{{ include "noncer.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "noncer.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "noncer.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "noncer.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create }}
+{{- default (include "noncer.fullname" .) .Values.serviceAccount.name }}
+{{- else }}
+{{- default "default" .Values.serviceAccount.name }}
+{{- end }}
+{{- end }}

charts/noncer/templates/deployment.yaml

@@ -0,0 +1,81 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "noncer.fullname" . }}
+  labels:
+    {{- include "noncer.labels" . | nindent 4 }}
+spec:
+  selector:
+    matchLabels:
+      {{- include "noncer.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      annotations:
+      {{- with .Values.podAnnotations }}
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      labels:
+        {{- include "noncer.selectorLabels" . | nindent 8 }}
+    spec:
+      {{- with .Values.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      securityContext:
+        {{- toYaml .Values.podSecurityContext | nindent 8 }}
+      containers:
+        - name: {{ .Chart.Name }}
+          securityContext:
+            {{- toYaml .Values.securityContext | nindent 12 }}
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          args:
+          - -user
+          - "{{ .Values.email.user }}"
+          - -host
+          - "{{ .Values.email.host }}"
+          - -port
+          - "{{ .Values.email.port }}"
+          - -pass
+          - "$(PASSWORD)"
+          - -period
+          - "{{ .Values.bot.period }}"
+          - -webhook
+          - "$(WEBHOOK)"
+          {{- range .Values.bot.allowList}}
+          - -allowlist
+          - "{{ . }}"
+          {{- end }}
+          env:
+          - name: PASSWORD
+            valueFrom:
+              secretKeyRef:
+              {{- if .Values.existingSecret }}
+                name: "{{ .Values.existingSecret }}"
+              {{- else }}
+                name: "{{ include "noncer.name" . }}"
+              {{- end }}
+                key: password
+          - name: WEBHOOK
+            valueFrom:
+              secretKeyRef:
+              {{- if .Values.existingSecret }}
+                name: "{{ .Values.existingSecret }}"
+              {{- else }}
+                name: "{{ include "noncer.name" . }}"
+              {{- end }}
+                key: webhook
+          resources:
+            {{- toYaml .Values.resources | nindent 12 }}
+      {{- with .Values.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}

charts/noncer/templates/secret.yaml

@@ -0,0 +1,10 @@
+{{- if not .Values.existingSecret -}}
+apiVersion: v1
+kind: Secret
+metadata:
+  name: "{{ include "noncer.name" . }}"
+type: Opaque
+data:
+  password: {{ .Values.email.password | required ".Values.email.password is required." | b64enc }}
+  webhook: {{ .Values.bot.webhook | required ".Values.bot.webhook is required" | b64enc }}
+{{- end -}}

charts/noncer/values.yaml

@@ -0,0 +1,47 @@
+image:
+  repository: ghcr.io/discord-gophers/noncer
+  pullPolicy: IfNotPresent
+  # Overrides the image tag whose default is the chart appVersion.
+  tag: ""
+
+# The bot can be provided with an existing secret that contains both the password and the webhook.
+# Otherwise a secret will be created
+existingSecret: ""
+
+email:
+  user: ""
+  password: ""
+  host: ""
+  port: 993
+
+bot:
+  period: 60
+  webhook: ""
+  allowList: []
+
+
+imagePullSecrets: []
+nameOverride: ""
+fullnameOverride: ""
+
+podAnnotations: {}
+podSecurityContext: {}
+securityContext: {}
+
+resources: {}
+  # We usually recommend not to specify default resources and to leave this as a conscious
+  # choice for the user. This also increases chances charts run on environments with little
+  # resources, such as Minikube. If you do want to specify resources, uncomment the following
+  # lines, adjust them as necessary, and remove the curly braces after 'resources:'.
+  # limits:
+  #   cpu: 100m
+  #   memory: 128Mi
+  # requests:
+  #   cpu: 100m
+  #   memory: 128Mi
+
+nodeSelector: {}
+
+tolerations: []
+
+affinity: {}