init

.github/workflows/build.yml

@@ -0,0 +1,30 @@
+name: build
+on:
+  - push
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Build
+        run: ./build.sh
+  release:
+    if: startsWith(github.ref, 'refs/tags/v')
+    name: Release
+    needs: build
+    runs-on: ubuntu-22.04
+    permissions:
+      packages: write
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Release
+        run: ./release.sh

.gitignore

@@ -0,0 +1 @@
+aws-docdb-example

.vscode/settings.json

@@ -0,0 +1,8 @@
+{
+    "cSpell.words": [
+        "bson",
+        "DOCDB",
+        "terramate",
+        "Upsert"
+    ]
+}

Dockerfile

@@ -0,0 +1,43 @@
+# syntax=docker.io/docker/dockerfile:1.7
+FROM golang:1.22-bookworm as builder
+WORKDIR /app
+COPY go.* ./
+RUN go mod download
+COPY *.go .
+ARG APP_VERSION='0.0.0-dev'
+ARG APP_REVISION='0000000000000000000000000000000000000000'
+RUN CGO_ENABLED=0 go build -ldflags="-s -X main.version=${APP_VERSION} -X main.revision=${APP_REVISION}"
+
+# NB we use the bookworm-slim (instead of scratch) image so we can enter the container to execute bash etc.
+FROM debian:bookworm-slim
+RUN <<EOF
+#!/bin/bash
+set -euxo pipefail
+apt-get update
+apt-get install -y --no-install-recommends \
+    wget \
+    openssl \
+    iproute2 \
+    bind9-dnsutils \
+    ca-certificates
+rm -rf /var/lib/apt/lists/*
+EOF
+WORKDIR /
+# see https://docs.aws.amazon.com/documentdb/latest/developerguide/connect_programmatically.html#connect_programmatically-tls_enabled
+ADD --chmod=444 https://truststore.pki.rds.amazonaws.com/global/global-bundle.pem .
+COPY --from=builder /app/aws-docdb-example .
+EXPOSE 8000
+# NB 65534:65534 is the uid:gid of the nobody:nogroup user:group.
+# NB we use a numeric uid:gid to easy the use in kubernetes securityContext.
+#    k8s will only be able to infer the runAsUser and runAsGroup values when
+#    the USER intruction has a numeric uid:gid. otherwise it will fail with:
+#       kubelet Error: container has runAsNonRoot and image has non-numeric
+#       user (nobody), cannot verify user is non-root
+USER 65534:65534
+ENTRYPOINT ["/aws-docdb-example"]
+ARG APP_SOURCE_URL
+ARG APP_REVISION
+LABEL org.opencontainers.image.source="$APP_SOURCE_URL"
+LABEL org.opencontainers.image.revision="$APP_REVISION"
+LABEL org.opencontainers.image.description="AWS DocumentDB example application using Go"
+LABEL org.opencontainers.image.licenses="MIT"

README.md

@@ -0,0 +1,9 @@
+# About
+
+[![Build](https://github.com/rgl/aws-docdb-example/actions/workflows/build.yml/badge.svg)](https://github.com/rgl/aws-docdb-example/actions/workflows/build.yml)
+
+AWS DocumentDB example Go application.
+
+This is used in:
+
+* [rgl/terramate-aws-eks-example](https://github.com/rgl/terramate-aws-eks-example)

build.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+set -euxo pipefail
+
+APP_REVISION="${GITHUB_SHA:-0000000000000000000000000000000000000000}"
+
+docker build \
+    --build-arg "APP_REVISION=$APP_REVISION" \
+    .

go.mod

@@ -0,0 +1,35 @@
+module aws-docdb-example
+
+go 1.22.2
+
+require (
+	github.com/aws/aws-sdk-go-v2/config v1.27.11
+	github.com/aws/aws-sdk-go-v2/service/secretsmanager v1.28.6
+	go.mongodb.org/mongo-driver v1.15.0
+)
+
+require (
+	github.com/aws/aws-sdk-go-v2 v1.26.1 // indirect
+	github.com/aws/aws-sdk-go-v2/credentials v1.17.11 // indirect
+	github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.16.1 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/configsources v1.3.5 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.6.5 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/ini v1.8.0 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/accept-encoding v1.11.2 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.11.7 // indirect
+	github.com/aws/aws-sdk-go-v2/service/sso v1.20.5 // indirect
+	github.com/aws/aws-sdk-go-v2/service/ssooidc v1.23.4 // indirect
+	github.com/aws/aws-sdk-go-v2/service/sts v1.28.6 // indirect
+	github.com/aws/smithy-go v1.20.2 // indirect
+	github.com/golang/snappy v0.0.1 // indirect
+	github.com/google/go-cmp v0.6.0 // indirect
+	github.com/klauspost/compress v1.13.6 // indirect
+	github.com/montanaflynn/stats v0.7.0 // indirect
+	github.com/xdg-go/pbkdf2 v1.0.0 // indirect
+	github.com/xdg-go/scram v1.1.2 // indirect
+	github.com/xdg-go/stringprep v1.0.4 // indirect
+	github.com/youmark/pkcs8 v0.0.0-20181117223130-1be2e3e5546d // indirect
+	golang.org/x/crypto v0.22.0 // indirect
+	golang.org/x/sync v0.1.0 // indirect
+	golang.org/x/text v0.14.0 // indirect
+)

go.sum

@@ -0,0 +1,78 @@
+github.com/aws/aws-sdk-go-v2 v1.26.1 h1:5554eUqIYVWpU0YmeeYZ0wU64H2VLBs8TlhRB2L+EkA=
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+github.com/aws/aws-sdk-go-v2/config v1.27.11 h1:f47rANd2LQEYHda2ddSCKYId18/8BhSRM4BULGmfgNA=
+github.com/aws/aws-sdk-go-v2/config v1.27.11/go.mod h1:SMsV78RIOYdve1vf36z8LmnszlRWkwMQtomCAI0/mIE=
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+github.com/aws/aws-sdk-go-v2/credentials v1.17.11/go.mod h1:AQtFPsDH9bI2O+71anW6EKL+NcD7LG3dpKGMV4SShgo=
+github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.16.1 h1:FVJ0r5XTHSmIHJV6KuDmdYhEpvlHpiSd38RQWhut5J4=
+github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.16.1/go.mod h1:zusuAeqezXzAB24LGuzuekqMAEgWkVYukBec3kr3jUg=
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