Initial implementation

Author: franksn90

.gitattributes

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+/mvnw text eol=lf
+*.cmd text eol=crlf

.github/workflows/dockerBuildAndPush.yml

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+name: Docker build and publish to GHCR
+
+on:
+  push:
+    branches:
+      - main
+  release:
+    types: [published] # will use tag name regardless of naming
+
+jobs:
+  build_and_publish:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - name: Checkout current Repository
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        id: buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Available platforms
+        run: echo ${{ steps.buildx.outputs.platforms }}
+
+      - name: Log in to the Container registry
+        run:  docker login --username Cambio-Project --password ${{secrets.PUBLISH_PACKAGES}} ghcr.io
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ghcr.io/${{ github.repository }}
+          tags: |
+            type=ref,event=tag
+            type=raw,value=latest
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          platforms: linux/amd64,linux/arm64
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          build-args: |
+            EXECUTION_ENV=ci
+            GITHUB_TOKEN=${{ secrets.PUBLISH_PACKAGES }}
+            GITHUB_USER=${{ github.actor }}

.gitignore

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+HELP.md
+target/
+.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/

.mvn/wrapper/maven-wrapper.properties

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+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you 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.
+wrapperVersion=3.3.2
+distributionType=only-script
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.11/apache-maven-3.9.11-bin.zip

Dockerfile

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+# Stage 1: Build Spring Boot app
+FROM maven:3.9.5-eclipse-temurin-21 AS builder
+WORKDIR /app
+COPY pom.xml .
+COPY src ./src
+RUN mvn clean package -DskipTests
+
+# Stage 2: Runtime with Java + Prometheus
+FROM eclipse-temurin:21-jre
+
+# Set Prometheus version
+ENV PROM_VERSION=3.5.0
+
+# Install Prometheus + promtool
+RUN curl -sSL https://github.com/prometheus/prometheus/releases/download/v${PROM_VERSION}/prometheus-${PROM_VERSION}.linux-amd64.tar.gz \
+    | tar -xz -C /opt && \
+    mv /opt/prometheus-${PROM_VERSION}.linux-amd64 /opt/prometheus
+
+# Symlinks for convenience
+RUN ln -s /opt/prometheus/prometheus /usr/local/bin/prometheus && \
+    ln -s /opt/prometheus/promtool /usr/local/bin/promtool
+
+# Copy Spring Boot JAR
+COPY --from=builder /app/target/*.jar /prometheus-service.jar
+
+# Prometheus config dir
+COPY prometheus.yml /etc/prometheus/prometheus.yml
+
+# Expose ports
+EXPOSE 9090 8080
+
+# Entrypoint: run both Prometheus + Spring Boot
+CMD sh -c "\
+  prometheus \
+    --config.file=/etc/prometheus/prometheus.yml \
+    --storage.tsdb.path=/prometheus \
+    --web.enable-lifecycle & \
+  java -jar /prometheus-service.jar \
+"

README.md

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-Initial
+Endpoint:
+api/import
+Expects OpenMetrics file as Parameter "file"
+
+Local Build:
+podman build -t prom-with-import .
+
+Run:
+podman run -p 9090:9090 -p 8080:8080 prom-with-import