Initial code

.dockerignore

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+chart

.github/workflows/main.yml

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+name: main
+
+on:
+  push:
+    branches:
+      - master
+      - '**'
+
+env:
+  GIT_SHA: ${{ github.sha }}
+  GIT_REF: ${{ github.ref }}
+  CONTAINER_NAME: shelly2prometheus
+  CHART_NAME: shelly2prometheus
+  CHART_GIT_BRANCH: master
+  CHART_REPOSITORY: szymonrychu/charts
+  BOT_TOKEN: ${{ secrets.BOT_TOKEN }}
+  BOT_EMAIL: "[email protected]"
+  BOT_USERNAME: "szymonrychu"
+  DOCKERHUB_USERNAME: ${{ secrets.DOCKERHUB_USERNAME }}
+  DOCKERHUB_PASSWORD: ${{ secrets.DOCKERHUB_PASSWORD }}
+  CONTAINER_REGISTRY: szymonrychu
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Parse versions in commit and setup debs
+        run: |
+          export LATEST_REPO_TAG=$(git tag -l --sort=-v:refname "[0-9]*" | head -n1)
+          if [ -z "${LATEST_REPO_TAG}" ]; then
+            export LATEST_REPO_TAG="0.0.1"
+          fi
+          export SHORT_SHA=$(echo ${GIT_SHA:0:7})
+
+          export APP_VERSION=${LATEST_REPO_TAG}-${SHORT_SHA}
+          export CHART_VERSION=${LATEST_REPO_TAG}-$(git show -s --format=%ct HEAD)-${SHORT_SHA}
+          export CONTAINER_VERSION=${GIT_SHA:0:7}
+
+          echo "APP_VERSION=${APP_VERSION}" >> $GITHUB_ENV
+          echo "CHART_VERSION=${CHART_VERSION}" >> $GITHUB_ENV
+          echo "CONTAINER_VERSION=${CONTAINER_VERSION}" >> $GITHUB_ENV
+          echo "SHORT_SHA=${SHORT_SHA}" >> $GITHUB_ENV
+          echo "LATEST_REPO_TAG=${LATEST_REPO_TAG}" >> $GITHUB_ENV
+
+          sudo wget https://github.com/mikefarah/yq/releases/download/3.4.0/yq_linux_amd64 -O /usr/bin/yq
+          sudo chmod +x /usr/bin/yq
+
+          curl https://raw.githubusercontent.com/helm/helm/master/scripts/get-helm-3 | bash
+
+      - name: Update metadata files
+        run: |
+          set -e
+          cd chart
+          yq w -i ${CHART_NAME}/Chart.yaml version ${CHART_VERSION}
+          yq w -i ${CHART_NAME}/Chart.yaml appVersion ${CONTAINER_VERSION}
+
+      - name: Build, tag, and push panel image to DockerHub
+        run: |
+          set -e
+
+          echo "${DOCKERHUB_PASSWORD}" | docker login -u ${DOCKERHUB_USERNAME} --password-stdin
+          
+          docker build -t ${CONTAINER_REGISTRY}/${CONTAINER_NAME}:${CONTAINER_VERSION} .
+          docker push ${CONTAINER_REGISTRY}/${CONTAINER_NAME}:${CONTAINER_VERSION}
+
+      - name: Package and push helm chart
+        run: |
+          set -e
+
+          cd chart
+
+          CHART_PWD=$(pwd)
+
+          helm dep update ${CHART_NAME}
+          helm package -u ${CHART_NAME}
+
+          git clone https://x-access-token:${BOT_TOKEN}@github.com/${CHART_REPOSITORY}.git /tmp/repo
+          cd /tmp/repo
+          git checkout ${CHART_GIT_BRANCH}
+
+          mv ${CHART_PWD}/${CHART_NAME}-${CHART_VERSION}.tgz ./
+          helm repo index .
+
+          git config --global user.email "${BOT_EMAIL}"
+          git config --global user.name "${BOT_USERNAME}"
+          git add -A
+          git commit -m "Add ${CHART_NAME} ${CHART_VERSION}"
+          git push origin ${CHART_GIT_BRANCH}

.github/workflows/release.yml

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+name: release
+
+on:
+  push:
+    tags:
+      - '[0-9]+.[0-9]+.[0-9]+'
+
+env:
+  GIT_SHA: ${{ github.sha }}
+  GIT_REF: ${{ github.ref }}
+  CONTAINER_NAME: shelly2prometheus
+  CHART_NAME: shelly2prometheus
+  CHART_GIT_BRANCH: master
+  CHART_REPOSITORY: szymonrychu/charts
+  BOT_TOKEN: ${{ secrets.BOT_TOKEN }}
+  BOT_EMAIL: "[email protected]"
+  BOT_USERNAME: "szymonrychu"
+  DOCKERHUB_USERNAME: ${{ secrets.DOCKERHUB_USERNAME }}
+  DOCKERHUB_PASSWORD: ${{ secrets.DOCKERHUB_PASSWORD }}
+  CONTAINER_REGISTRY: szymonrychu
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Parse versions in commit and setup debs
+      run: |
+        export LATEST_REPO_TAG=$(git tag -l --sort=-v:refname "[0-9]*" | head -n1)
+
+        export SHORT_SHA=$(echo ${GIT_SHA:0:7})
+
+        echo "APP_VERSION=${LATEST_REPO_TAG}" >> $GITHUB_ENV
+        echo "CHART_VERSION=${LATEST_REPO_TAG}" >> $GITHUB_ENV
+        echo "CONTAINER_VERSION=${LATEST_REPO_TAG}" >> $GITHUB_ENV
+        echo "SHORT_SHA=${SHORT_SHA}" >> $GITHUB_ENV
+        echo "LATEST_REPO_TAG=${LATEST_REPO_TAG}" >> $GITHUB_ENV
+
+        echo $SHORT_SHA
+        echo $LATEST_REPO_TAG
+
+        sudo wget https://github.com/mikefarah/yq/releases/download/3.4.0/yq_linux_amd64 -O /usr/bin/yq
+        sudo chmod +x /usr/bin/yq
+
+        curl https://raw.githubusercontent.com/helm/helm/master/scripts/get-helm-3 | bash
+
+    - name: Update metadata files
+      run: |
+        set -e
+        cd chart
+        yq w -i ${CHART_NAME}/Chart.yaml version ${CHART_VERSION}
+        yq w -i ${CHART_NAME}/Chart.yaml appVersion ${CONTAINER_VERSION}
+
+    - name: Build, tag, and push panel image to Amazon ECR
+      run: |
+        set -e
+        
+        echo "${DOCKERHUB_PASSWORD}" | docker login -u ${DOCKERHUB_USERNAME} --password-stdin
+
+        docker pull ${CONTAINER_REGISTRY}/${CONTAINER_NAME}:${GIT_SHA:0:7}
+        docker tag ${CONTAINER_REGISTRY}/${CONTAINER_NAME}:${GIT_SHA:0:7} ${CONTAINER_REGISTRY}/${CONTAINER_NAME}:${LATEST_REPO_TAG}
+        docker push ${CONTAINER_REGISTRY}/${CONTAINER_NAME}:${LATEST_REPO_TAG}
+
+        docker tag ${CONTAINER_REGISTRY}/${CONTAINER_NAME}:${GIT_SHA:0:7} ${CONTAINER_REGISTRY}/${CONTAINER_NAME}:latest
+        docker push ${CONTAINER_REGISTRY}/${CONTAINER_NAME}:${LATEST_REPO_TAG}
+
+    - name: Package and push helm chart
+      run: |
+        set -e
+
+        cd chart
+
+        CHART_PWD=$(pwd)
+
+        helm dep update ${CHART_NAME}
+        helm package -u ${CHART_NAME}
+
+        git clone https://x-access-token:${BOT_TOKEN}@github.com/${CHART_REPOSITORY}.git /tmp/repo
+        cd /tmp/repo
+        git checkout ${CHART_GIT_BRANCH}
+
+        mv ${CHART_PWD}/${CHART_NAME}-${CHART_VERSION}.tgz ./
+        helm repo index .
+
+        git config --global user.email "${BOT_EMAIL}"
+        git config --global user.name "${BOT_USERNAME}"
+        git add -A
+        git commit -m "Release ${CHART_NAME} ${CHART_VERSION}"
+        git push origin ${CHART_GIT_BRANCH}
+
+    - name: Create GH Release
+      uses: notlmn/release-with-changelog@v3
+      with:
+        token: ${{ secrets.BOT_TOKEN }}
+        template: '{commits}'

.gitignore

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+src/shelly2prometheus

Dockerfile

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+FROM golang:alpine as build
+
+# Set the Current Working Directory inside the container
+WORKDIR /app
+
+# Copy go mod and sum files
+COPY go.mod go.sum ./
+
+# Download all dependencies. Dependencies will be cached if the go.mod and go.sum files are not changed
+RUN go mod download
+
+COPY . .
+
+# Build the application
+RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -ldflags="-w -s" -o /go/bin/main 
+
+FROM scratch
+
+COPY --from=build /go/bin/main /go/bin/main
+# Expose port 9000 to the outside world
+EXPOSE 8090
+
+# Command to run the executable
+ENTRYPOINT ["/go/bin/main"]

chart/shelly2prometheus/.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/

chart/shelly2prometheus/Chart.yaml

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+apiVersion: v2
+name: shelly2prometheus
+description: A Helm chart for Kubernetes
+
+# 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: 0.0.1
+
+# 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: "0.0.1"

chart/shelly2prometheus/templates/_helpers.tpl

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+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "shelly2prometheus.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 "shelly2prometheus.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 "shelly2prometheus.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "shelly2prometheus.labels" -}}
+helm.sh/chart: {{ include "shelly2prometheus.chart" . }}
+{{ include "shelly2prometheus.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "shelly2prometheus.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "shelly2prometheus.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "shelly2prometheus.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create }}
+{{- default (include "shelly2prometheus.fullname" .) .Values.serviceAccount.name }}
+{{- else }}
+{{- default "default" .Values.serviceAccount.name }}
+{{- end }}
+{{- end }}

chart/shelly2prometheus/templates/configmap.yaml

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+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ include "shelly2prometheus.fullname" . }}
+  labels:
+    {{- include "shelly2prometheus.labels" . | nindent 4 }}
+data:
+  shellyUrl: {{ .Values.shellyUrl | quote }}
+  metricsPrefix: {{ .Values.metrics.prefix | quote }}
+  metricsPort: {{ .Values.metrics.port | quote }}
+  metricsEndpoint: {{ .Values.metrics.endpoint | quote }}