diff --git a/.gitignore b/.gitignore index a9f1a69..084a75e 100644 --- a/.gitignore +++ b/.gitignore @@ -1,4 +1,8 @@ */mta_archives/*.mtar +*/*.mtar +*/.*_mta_build_tmp/ +*/Makefile_*.mta +*/mta-op-*/ .DS_Store */target/* *.code-workspace diff --git a/README.adoc b/README.adoc index 5b86bd8..8fcf914 100644 --- a/README.adoc +++ b/README.adoc @@ -26,6 +26,7 @@ Clone the repository, following the link:https://help.github.com/en/github/creat * link:/cf-app[Simple CF app example, managing app attributes & deploy parameters] * link:/cf-app-features[Managing CF app features with app-features parameter] * link:/cf-app-docker[Docker images as cf apps] +* link:/cf-app-cnb[Cloud Native Buildpacks as cf app staging lifecycle] * link:/app-routes[Managing cf app routes] * link:/sharing-values-between-apps[Sharing configuration values between apps] * link:/skip-app-deploy[Skip app deployment using `skip-deploy` parameter] diff --git a/cf-app-cnb/.cfignore b/cf-app-cnb/.cfignore new file mode 100644 index 0000000..3a4cce3 --- /dev/null +++ b/cf-app-cnb/.cfignore @@ -0,0 +1,7 @@ +node_modules/ +.gitignore +.cfignore +*.mtar +mta-op-*/ +.cf-app-cnb_mta_build_tmp/ +Makefile_*.mta diff --git a/cf-app-cnb/.gitignore b/cf-app-cnb/.gitignore new file mode 100644 index 0000000..c2658d7 --- /dev/null +++ b/cf-app-cnb/.gitignore @@ -0,0 +1 @@ +node_modules/ diff --git a/cf-app-cnb/README.md b/cf-app-cnb/README.md new file mode 100644 index 0000000..5f6ce21 --- /dev/null +++ b/cf-app-cnb/README.md @@ -0,0 +1,52 @@ +# Staging a CF app with the Cloud Native Buildpacks lifecycle +This example shows how to model a Cloud Foundry application whose source code is staged on the platform with the [Cloud Native Buildpacks (CNB) lifecycle][cf-cnb-lifecycle], rather than the classic "buildpack v2" lifecycle. The CNB lifecycle lets you reference any [CNB-compliant builder image][buildpacks-io] (typically from [Paketo Buildpacks][paketo-io] or your own registry) and have the platform run it during staging. CNBs are considered to be the future for Cloud Foundry and already bring in [new capabilities](), including SBOMs, different compilation-options for traditionally supported languages, such as native-builds for Java and support for languages that have been uncovered so far (e.g. Rust, Elixir, Haskell). + +The bundled application is a verbatim copy of the [`nodejs/npm` sample][upstream-sample] from the upstream `paketo-buildpacks/samples` repository: a small Express HTTP server. Only [`mta.yaml`](), [`mtad.yaml`]() and a [`.cfignore`](<.cfignore>) are added on top to wrap the sample as an MTA module. + +[cf-cnb-lifecycle]: +[buildpacks-io]: +[paketo-io]: +[upstream-sample]: + +## Try it out +The example demonstrates 2 different approaches that lead to the same result. + +### Deploy directly from directory +This approach uses deployment descriptor [`mtad.yaml`](). The `.cfignore` file makes sure that no local development artefacts (e.g. `node_modules/` produced by a local `npm install`) are uploaded: +```shell +$ cf deploy ./ -f +``` + +### Build an MTA archive and deploy it +This approach uses development descriptor [`mta.yaml`]() to package the sources into an MTAR archive: +```shell +$ mbt build --platform=cf --target=. +$ cf deploy a.cnb.cf.app_0.0.0.mtar -f +``` + +The Paketo Node.js buildpack then runs `npm install` during staging on the platform and registers `node server.js` (taken from the `start` script in `package.json`) as the `web` process type, so no explicit `command:` parameter is required in the descriptors. + +## Examine the result +```shell +$ cf mta a.cnb.cf.app +Showing health and status for multi-target app a.cnb.cf.app... +OK +Version: 0.0.0 + +Apps: +name requested state instances memory disk urls +my-cnb-managed-app started 1/1 256M 512M . + +$ cf app my-cnb-managed-app +... +buildpacks: + - docker://docker.io/paketobuildpacks/nodejs + +$ curl https://./actuator/health +{"status":"UP"} +``` + +## Clean up resources +```shell +$ cf undeploy a.cnb.cf.app -f +``` diff --git a/cf-app-cnb/mta.yaml b/cf-app-cnb/mta.yaml new file mode 100644 index 0000000..10e4cdc --- /dev/null +++ b/cf-app-cnb/mta.yaml @@ -0,0 +1,38 @@ +_schema-version: "3.3.0" +ID: a.cnb.cf.app +version: 0.0.0 + +modules: + # A CF app whose source is staged on the platform via the Cloud Native + # Buildpacks (CNB) lifecycle. The Paketo Node.js buildpack runs `npm + # install` during staging and registers `node server.js` (taken from the + # `start` script in package.json) as the `web` process type, so no explicit + # `command:` is required here. + - name: my-cnb-managed-app + type: application + path: . + build-parameters: + # Files to exclude from the MTA archive. `node_modules/` would otherwise + # be uploaded if the user ran `npm install` locally; the buildpack + # produces it on the platform during staging. The other entries are + # build artefacts of `mbt` itself, plus the previous run's MTAR. + ignore: + - node_modules/ + - .gitignore + - .cf-app-cnb_mta_build_tmp/ + - Makefile_*.mta + - "*.mtar" + parameters: + # Switch this app from the default "buildpack v2" lifecycle to "buildpack + # v3" (Cloud Native Buildpacks). See the Cloud Foundry documentation: + # https://v3-apidocs.cloudfoundry.org/#the-cnb-lifecycle + lifecycle: cnb + # CNB buildpack image, given as a fully qualified Docker URL. The Paketo + # Node.js image is pulled by the platform during staging. + buildpacks: + - docker://docker.io/paketobuildpacks/nodejs + memory: 256M + disk-quota: 512M + instances: 1 + routes: + - route: ${default-host}.${default-domain} diff --git a/cf-app-cnb/mtad.yaml b/cf-app-cnb/mtad.yaml new file mode 100644 index 0000000..917d841 --- /dev/null +++ b/cf-app-cnb/mtad.yaml @@ -0,0 +1,19 @@ +_schema-version: "3.3.0" +ID: a.cnb.cf.app +version: 0.0.0 + +modules: + # A CF app whose source is staged on the platform via the Cloud Native + # Buildpacks (CNB) lifecycle. + - name: my-cnb-managed-app + type: application + path: . + parameters: + lifecycle: cnb + buildpacks: + - docker://docker.io/paketobuildpacks/nodejs + memory: 256M + disk-quota: 512M + instances: 1 + routes: + - route: ${default-host}.${default-domain} diff --git a/cf-app-cnb/package-lock.json b/cf-app-cnb/package-lock.json new file mode 100644 index 0000000..d13b156 --- /dev/null +++ b/cf-app-cnb/package-lock.json @@ -0,0 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Date(Date.now()).toString(); + console.log(request.method, request.hostname, request.path, requestTime); + next(); +}); + +app.get('/', (request, response) => { + response.send(` + + + Powered By Paketo Buildpacks + + + + +`); +}); + +app.get("/actuator/health", (request, response) => { + response.json({ status: "UP" }); +}); + +app.listen(port, () => { + console.log(`App listening on port ${port}`); +});