feat: init

.github/workflows/ci.yml

@@ -0,0 +1,62 @@
+name: ci
+
+on:
+  push:
+    branches:
+      - 'main'
+    tags:
+      - 'v*'
+  pull_request:
+    branches:
+      - 'main'
+
+env:
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - uses: actions/setup-go@v3
+        with:
+          go-version: '^1.18.0'
+
+      - name: Execute go tests
+        run: |
+          go mod download
+          go test ./...
+
+      - name: Log in to the container registry
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v4
+        with:
+          images: steadybit/extension-datadog
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v3
+        with:
+          context: ./
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          platforms: linux/amd64,linux/arm64

.github/workflows/cla.yml

@@ -0,0 +1,12 @@
+name: "CLA Assistant"
+on:
+  issue_comment:
+    types: [created]
+  pull_request_target:
+    types: [opened,closed,synchronize]
+
+jobs:
+  call-workflow:
+    uses: steadybit/.github/.github/workflows/cla.yml@main
+    secrets:
+      PERSONAL_ACCESS_TOKEN: ${{ secrets.PERSONAL_ACCESS_TOKEN_USED_BY_CLA_FROM_ANSGAR }}

.gitignore

@@ -0,0 +1 @@
+/extension-datadog

CHANGELOG.md

@@ -0,0 +1,5 @@
+# Changelog
+
+## v1.0.0
+
+ - Initial release

CONTRIBUTING.md

@@ -0,0 +1,10 @@
+## Contributor License Agreement (CLA)
+
+In order to accept your pull request, we need you to submit a CLA. You only need to do this once. If you are submitting a pull request for the first time, just submit a Pull Request and our CLA Bot will give you instructions on how to sign the CLA before merging your Pull Request.
+
+All contributors must sign an [Individual Contributor License Agreement](https://github.com/steadybit/.github/blob/main/.github/cla/individual-cla.md).
+
+If contributing on behalf of your company, your company must sign a [Corporate Contributor License Agreement](https://github.com/steadybit/.github/blob/main/.github/cla/corporate-cla.md). If so, please contact us via [email protected].
+
+If for any reason, your first contribution is in a PR created by other contributor, please just add a comment to the PR
+with the following text to agree our CLA: "I have read the CLA Document and I hereby sign the CLA".

Dockerfile

@@ -0,0 +1,29 @@
+# syntax=docker/dockerfile:1
+
+##
+## Build
+##
+FROM golang:1.18-alpine AS build
+
+WORKDIR /app
+
+COPY go.mod ./
+COPY go.sum ./
+RUN go mod download
+
+COPY . .
+
+RUN go build -o /extension-datadog
+
+##
+## Runtime
+##
+FROM alpine:3.16
+
+WORKDIR /
+
+COPY --from=build /extension-datadog /extension-datadog
+
+EXPOSE 8088
+
+ENTRYPOINT ["/extension-datadog"]

LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2022 Steadybit GmbH
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

README.md

@@ -0,0 +1,41 @@
+<img src="./logo.png" height="130" align="right" alt="Datadog logo depicting a dog with the text 'Datadog'">
+
+# Steadybit extension-datadog
+
+A [Steadybit](https://www.steadybit.com/) check implementation for data exposed through Datadog.
+
+## Capabilities
+
+ - Check monitor status
+
+## Configuration
+
+TODO
+
+- STEADYBIT_EXTENSION_API_KEY
+- STEADYBIT_EXTENSION_APPLICATION_KEY
+- STEADYBIT_EXTENSION_SITE (see https://docs.datadoghq.com/getting_started/site/#access-the-datadog-site)
+
+## Deployment
+
+We recommend that you deploy the extension with our [official Helm chart](https://github.com/steadybit/helm-charts/tree/main/charts/steadybit-extension-kubernetes).
+
+## Agent Configuration
+
+The Steadybit Kubernetes agent needs to be configured to interact with the Kubernetes extension by adding the following environment variables:
+
+```shell
+# Make sure to adapt the URLs and indices in the environment variables names as necessary for your setup
+
+STEADYBIT_AGENT_ACTIONS_EXTENSIONS_0_URL=http://steadybit-extension-kubernetes.steadybit-extension.svc.cluster.local:8088
+STEADYBIT_AGENT_DISCOVERIES_EXTENSIONS_0_URL=http://steadybit-extension-kubernetes.steadybit-extension.svc.cluster.local:8088
+```
+
+When leveraging our official Helm charts, you can set the configuration through additional environment variables on the agent:
+
+```
+--set agent.env[0].name=STEADYBIT_AGENT_ACTIONS_EXTENSIONS_0_URL \
+--set agent.env[0].value="http://steadybit-extension-kubernetes.steadybit-extension.svc.cluster.local:8088" \
+--set agent.env[1].name=STEADYBIT_AGENT_DISCOVERIES_EXTENSIONS_0_URL \
+--set agent.env[1].value="http://steadybit-extension-kubernetes.steadybit-extension.svc.cluster.local:8088"
+```

config/config.go

@@ -0,0 +1,43 @@
+// SPDX-License-Identifier: MIT
+// SPDX-FileCopyrightText: 2022 Steadybit GmbH
+
+package config
+
+import (
+	"context"
+	"github.com/DataDog/datadog-api-client-go/v2/api/datadog"
+	"github.com/DataDog/datadog-api-client-go/v2/api/datadogV1"
+	"github.com/kelseyhightower/envconfig"
+	"github.com/rs/zerolog/log"
+)
+
+var (
+	Config Specification
+)
+
+func init() {
+	err := envconfig.Process("steadybit_extension", &Config)
+	if err != nil {
+		log.Fatal().Err(err).Msgf("Failed to parse configuration from environment.")
+	}
+	validateConfiguration()
+}
+
+func validateConfiguration() {
+	configuration := datadog.NewConfiguration()
+	apiClient := datadog.NewAPIClient(configuration)
+	api := datadogV1.NewAuthenticationApi(apiClient)
+	resp, r, err := api.Validate(Config.WrapContextWithDatadogContextValues(context.Background()))
+
+	if err != nil {
+		log.Fatal().Err(err).Msgf("Failed to validate extension configuration using the Datadog API. Full HTTP response: %v", r)
+	}
+
+	if !resp.HasValid() {
+		log.Fatal().Msgf("Datadog API did not respond with expected 'valid' field while validating configuration. Full HTTP response: %v", r)
+	}
+
+	if !resp.GetValid() {
+		log.Fatal().Msgf("Datadog API reported that the given configuration is invalid. Please fix the environment configuration. Full HTTP response: %v", r)
+	}
+}

config/specification.go

@@ -0,0 +1,41 @@
+// SPDX-License-Identifier: MIT
+// SPDX-FileCopyrightText: 2022 Steadybit GmbH
+
+package config
+
+import (
+	"context"
+	"github.com/DataDog/datadog-api-client-go/v2/api/datadog"
+)
+
+type Specification struct {
+	// see https://docs.datadoghq.com/getting_started/site/#access-the-datadog-site
+	Site           string `json:"site" split_words:"true" required:"true"`
+	ApiKey         string `json:"apiKey" split_words:"true" required:"true"`
+	ApplicationKey string `json:"applicationKey" split_words:"true" required:"true"`
+}
+
+func (s *Specification) WrapContextWithDatadogContextValues(ctx context.Context) context.Context {
+	ctx = context.WithValue(
+		ctx,
+		datadog.ContextAPIKeys,
+		map[string]datadog.APIKey{
+			"apiKeyAuth": {
+				Key: Config.ApiKey,
+			},
+			"appKeyAuth": {
+				Key: Config.ApplicationKey,
+			},
+		},
+	)
+
+	ctx = context.WithValue(
+		ctx,
+		datadog.ContextServerVariables,
+		map[string]string{
+			"site": Config.Site,
+		},
+	)
+
+	return ctx
+}

extmonitor/common.go

@@ -0,0 +1,9 @@
+// SPDX-License-Identifier: MIT
+// SPDX-FileCopyrightText: 2022 Steadybit GmbH
+
+package extmonitor
+
+const (
+	monitorTargetId = "com.github.steadybit.extension_datadog.monitor"
+	monitorIcon     = "data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20800.55%20856.85%22%3E%3Cpath%20fill%3D%22currentColor%22%20class%3D%22st0%22%20d%3D%22M670.38%20608.27l-71.24-46.99-59.43%2099.27-69.12-20.21-60.86%2092.89%203.12%2029.24%20330.9-60.97-19.22-206.75-54.15%20113.52zm-308.59-89.14l53.09-7.3c8.59%203.86%2014.57%205.33%2024.87%207.95%2016.04%204.18%2034.61%208.19%2062.11-5.67%206.4-3.17%2019.73-15.36%2025.12-22.31l217.52-39.46%2022.19%20268.56-372.65%2067.16-32.25-268.93zm404.06-96.77l-21.47%204.09L703.13.27.27%2081.77l86.59%20702.68%2082.27-11.94c-6.57-9.38-16.8-20.73-34.27-35.26-24.23-20.13-15.66-54.32-1.37-75.91%2018.91-36.48%20116.34-82.84%20110.82-141.15-1.98-21.2-5.35-48.8-25.03-67.71-.74%207.85.59%2015.41.59%2015.41s-8.08-10.31-12.11-24.37c-4-5.39-7.14-7.11-11.39-14.31-3.03%208.33-2.63%2017.99-2.63%2017.99s-6.61-15.62-7.68-28.8c-3.92%205.9-4.91%2017.11-4.91%2017.11s-8.59-24.62-6.63-37.88c-3.92-11.54-15.54-34.44-12.25-86.49%2021.45%2015.03%2068.67%2011.46%2087.07-15.66%206.11-8.98%2010.29-33.5-3.05-81.81-8.57-30.98-29.79-77.11-38.06-94.61l-.99.71c4.36%2014.1%2013.35%2043.66%2016.8%2057.99%2010.44%2043.47%2013.24%2058.6%208.34%2078.64-4.17%2017.42-14.17%2028.82-39.52%2041.56-25.35%2012.78-58.99-18.32-61.12-20.04-24.63-19.62-43.68-51.63-45.81-67.18-2.21-17.02%209.81-27.24%2015.87-41.16-8.67%202.48-18.34%206.88-18.34%206.88s11.54-11.94%2025.77-22.27c5.89-3.9%209.35-6.38%2015.56-11.54-8.99-.15-16.29.11-16.29.11s14.99-8.1%2030.53-14c-11.37-.5-22.25-.08-22.25-.08s33.45-14.96%2059.87-25.94c18.17-7.45%2035.92-5.25%2045.89%209.17%2013.09%2018.89%2026.84%2029.15%2055.98%2035.51%2017.89-7.93%2023.33-12.01%2045.81-18.13%2019.79-21.76%2035.33-24.58%2035.33-24.58s-7.71%207.07-9.77%2018.18c11.22-8.84%2023.52-16.22%2023.52-16.22s-4.76%205.88-9.2%2015.22l1.03%201.53c13.09-7.85%2028.48-14.04%2028.48-14.04s-4.4%205.56-9.56%2012.76c9.87-.08%2029.89.42%2037.66%201.3%2045.87%201.01%2055.39-48.99%2072.99-55.26%2022.04-7.87%2031.89-12.63%2069.45%2024.26%2032.23%2031.67%2057.41%2088.36%2044.91%20101.06-10.48%2010.54-31.16-4.11-54.08-32.68-12.11-15.13-21.27-33.01-25.56-55.74-3.62-19.18-17.71-30.31-17.71-30.31S520%2092.95%20520%20109.01c0%208.77%201.1%2041.56%2015.16%2059.96-1.39%202.69-2.04%2013.31-3.58%2015.34-16.36-19.77-51.49-33.92-57.22-38.09%2019.39%2015.89%2063.96%2052.39%2081.08%2087.37%2016.19%2033.08%206.65%2063.4%2014.84%2071.25%202.33%202.25%2034.82%2042.73%2041.07%2063.07%2010.9%2035.45.65%2072.7-13.62%2095.81l-39.85%206.21c-5.83-1.62-9.76-2.43-14.99-5.46%202.88-5.1%208.61-17.82%208.67-20.44l-2.25-3.95c-12.4%2017.57-33.18%2034.63-50.44%2044.43-22.59%2012.8-48.63%2010.83-65.58%205.58-48.11-14.84-93.6-47.35-104.57-55.89%200%200-.34%206.82%201.73%208.35%2012.13%2013.68%2039.92%2038.43%2066.78%2055.68l-57.26%206.3%2027.07%20210.78c-12%201.72-13.87%202.56-27.01%204.43-11.58-40.91-33.73-67.62-57.94-83.18-21.35-13.72-50.8-16.81-78.99-11.23l-1.81%202.1c19.6-2.04%2042.74.8%2066.51%2015.85%2023.33%2014.75%2042.13%2052.85%2049.05%2075.79%208.86%2029.32%2014.99%2060.68-8.86%2093.92-16.97%2023.63-66.51%2036.69-106.53%208.44%2010.69%2017.19%2025.14%2031.25%2044.59%2033.9%2028.88%203.92%2056.29-1.09%2075.16-20.46%2016.11-16.56%2024.65-51.19%2022.4-87.66l25.49-3.7%209.2%2065.46%20421.98-50.81-34.43-335.8zM509.12%20244.59c-1.18%202.69-3.03%204.45-.25%2013.2l.17.5.44%201.13%201.16%202.62c5.01%2010.24%2010.51%2019.9%2019.7%2024.83%202.38-.4%204.84-.67%207.39-.8%208.63-.38%2014.08.99%2017.54%202.85.31-1.72.38-4.24.19-7.95-.67-12.97%202.57-35.03-22.36-46.64-9.41-4.37-22.61-3.02-27.01%202.43.8.1%201.52.27%202.08.46%206.65%202.33%202.14%204.62.95%207.37m69.87%20121.02c-3.27-1.8-18.55-1.09-29.29.19-20.46%202.41-42.55%209.51-47.39%2013.29-8.8%206.8-4.8%2018.66%201.7%2023.53%2018.23%2013.62%2034.21%2022.75%2051.08%2020.53%2010.36-1.36%2019.49-17.76%2025.96-32.64%204.43-10.25%204.43-21.31-2.06-24.9M397.85%20260.65c5.77-5.48-28.74-12.68-55.52%205.58-19.75%2013.47-20.38%2042.35-1.47%2058.72%201.89%201.62%203.45%202.77%204.91%203.71%205.52-2.6%2011.81-5.23%2019.05-7.58%2012.23-3.97%2022.4-6.02%2030.76-7.11%204-4.47%208.65-12.34%207.49-26.59-1.58-19.33-16.23-16.26-5.22-26.73%22%2F%3E%3C%2Fsvg%3E"
+)