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sites.py
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sites.py
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import json
import requests
from flask import (
current_app,
Blueprint,
request,
flash,
redirect,
url_for,
render_template,
)
import pulumi
import pulumi.automation as auto
from pulumi_aws import s3
bp = Blueprint("sites", __name__, url_prefix="/sites")
def create_pulumi_program(content: str):
# Create a bucket and expose a website index document
site_bucket = s3.Bucket(
"s3-website-bucket", website=s3.BucketWebsiteArgs(index_document="index.html")
)
index_content = content
# Write our index.html into the site bucket
s3.BucketObject(
"index",
bucket=site_bucket.id,
content=index_content,
key="index.html",
content_type="text/html; charset=utf-8",
)
# Set the access policy for the bucket so all objects are readable
s3.BucketPolicy(
"bucket-policy",
bucket=site_bucket.id,
policy=site_bucket.id.apply(
lambda id: json.dumps(
{
"Version": "2012-10-17",
"Statement": {
"Effect": "Allow",
"Principal": "*",
"Action": ["s3:GetObject"],
# Policy refers to bucket explicitly
"Resource": [f"arn:aws:s3:::{id}/*"],
},
}
)
),
)
# Export the website URL
pulumi.export("website_url", site_bucket.website_endpoint)
pulumi.export("website_content", index_content)
@bp.route("/new", methods=["GET", "POST"])
def create_site():
"""creates new sites"""
if request.method == "POST":
stack_name = request.form.get("site-id")
file_url = request.form.get("file-url")
if file_url:
site_content = requests.get(file_url).text
else:
site_content = request.form.get("site-content")
def pulumi_program():
return create_pulumi_program(str(site_content))
try:
# create a new stack, generating our pulumi program on the fly from the POST body
stack = auto.create_stack(
stack_name=str(stack_name),
project_name=current_app.config["PROJECT_NAME"],
program=pulumi_program,
)
stack.set_config("aws:region", auto.ConfigValue("us-east-1"))
# deploy the stack, tailing the logs to stdout
stack.up(on_output=print)
flash(
f"Successfully created site '{stack_name}'", category="success")
except auto.StackAlreadyExistsError:
flash(
f"Error: Site with name '{stack_name}' already exists, pick a unique name",
category="danger",
)
return redirect(url_for("sites.list_sites"))
return render_template("sites/create.html")
@bp.route("/", methods=["GET"])
def list_sites():
"""lists all sites"""
sites = []
org_name = current_app.config["PULUMI_ORG"]
project_name = current_app.config["PROJECT_NAME"]
try:
ws = auto.LocalWorkspace(
project_settings=auto.ProjectSettings(
name=project_name, runtime="python")
)
all_stacks = ws.list_stacks()
for stack in all_stacks:
stack = auto.select_stack(
stack_name=stack.name,
project_name=project_name,
# no-op program, just to get outputs
program=lambda: None,
)
outs = stack.outputs()
if 'website_url' in outs:
sites.append(
{
"name": stack.name,
"url": f"http://{outs['website_url'].value}",
"console_url": f"https://app.pulumi.com/{org_name}/{project_name}/{stack.name}",
}
)
except Exception as exn:
flash(str(exn), category="danger")
return render_template("sites/index.html", sites=sites)
@bp.route("/<string:id>/update", methods=["GET", "POST"])
def update_site(id: str):
stack_name = id
if request.method == "POST":
file_url = request.form.get("file-url")
if file_url:
site_content = requests.get(file_url).text
else:
site_content = str(request.form.get("site-content"))
try:
def pulumi_program():
create_pulumi_program(str(site_content))
stack = auto.select_stack(
stack_name=stack_name,
project_name=current_app.config["PROJECT_NAME"],
program=pulumi_program,
)
stack.set_config("aws:region", auto.ConfigValue("us-east-1"))
# deploy the stack, tailing the logs to stdout
stack.up(on_output=print)
flash(f"Site '{stack_name}' successfully updated!",
category="success")
except auto.ConcurrentUpdateError:
flash(
f"Error: site '{stack_name}' already has an update in progress",
category="danger",
)
except Exception as exn:
flash(str(exn), category="danger")
return redirect(url_for("sites.list_sites"))
stack = auto.select_stack(
stack_name=stack_name,
project_name=current_app.config["PROJECT_NAME"],
# noop just to get the outputs
program=lambda: None,
)
outs = stack.outputs()
content_output = outs.get("website_content")
content = content_output.value if content_output else None
return render_template("sites/update.html", name=stack_name, content=content)
@bp.route("/<string:id>/delete", methods=["POST"])
def delete_site(id: str):
stack_name = id
try:
stack = auto.select_stack(
stack_name=stack_name,
project_name=current_app.config["PROJECT_NAME"],
# noop program for destroy
program=lambda: None,
)
stack.destroy(on_output=print)
stack.workspace.remove_stack(stack_name)
flash(f"Site '{stack_name}' successfully deleted!", category="success")
except auto.ConcurrentUpdateError:
flash(
f"Error: Site '{stack_name}' already has update in progress",
category="danger",
)
except Exception as exn:
flash(str(exn), category="danger")
return redirect(url_for("sites.list_sites"))