Creating a Containerized Application with Buildpacks

Creating a Containerized Application with Buildpacks

lab link : - https://www.skills.google/paths/19/course_templates/530/labs/617946

In this lab, you:

    Build an application with pack, a command-line tool that is used with builders to create container images from source code.
    Use the Google Cloud's buildpacks builder to build a container image.
    Run and test the container locally with Docker.
    Build and redeploy the container to Cloud Run.

PROJECT_ID=$(gcloud config get-value project)
REGION=us-central1

gcloud config set compute/region $REGION

gcloud services enable artifactregistry.googleapis.com run.googleapis.com translate.googleapis.com

mkdir app && cd app
gcloud storage cp gs://cloud-training/CBL513/sample-apps/sample-py-app.zip . && unzip sample-py-app

cat sample-py-app/main.py

cd sample-py-app

(curl -sSL "https://github.com/buildpacks/pack/releases/download/v0.39.0/pack-v0.39.0-linux.tgz" | sudo tar -C /usr/local/bin/ --no-same-owner -xzv pack)

pack build --builder=gcr.io/buildpacks/builder sample-py-app

docker images

docker run -it -e PORT=8080 -p 8080:8080 -d sample-py-app

curl http://localhost:8080/

main.py

from flask import Flask, request
import google.auth
from google.cloud import translate

app = Flask(__name__)
_, PROJECT_ID = google.auth.default()
TRANSLATE = translate.TranslationServiceClient()
PARENT = 'projects/{}'.format(PROJECT_ID)
SOURCE, TARGET = ('en', 'English'), ('es', 'Spanish')

@app.route('/', methods=['GET', 'POST'])
def index():
    # reset all variables
    text = translated = None

    if request.method == 'POST':
        text = request.get_json().get('text').strip()
        if text:
            data = {
                'contents': [text],
                'parent': PARENT,
                'target_language_code': TARGET[0],
            }
            # handle older call for backwards-compatibility
            try:
                rsp = TRANSLATE.translate_text(request=data)
            except TypeError:
                rsp = TRANSLATE.translate_text(**data)
            translated = rsp.translations[0].translated_text

    # create context
    context = {
        'trtext': translated
    }
    return context

if __name__ == "__main__":
    # Dev only: run "python main.py" and open http://localhost:8080
    import os
    app.run(host="localhost", port=int(os.environ.get('PORT', 8080)), debug=True)
    


gcloud run deploy sample-py-app --source . --region=${REGION} --allow-unauthenticated

SERVICE_URL=$(gcloud run services describe sample-py-app --region=${REGION} --format="value(status.url)"); echo $SERVICE_URL

curl $SERVICE_URL -H 'Content-Type: application/json' -d '{"text" : "Welcome to this sample app, built with Google Cloud buildpacks."}'

https://github.com/buildpacks/pack/