activity: basic webhook alerts for automation failures

app/portal/webhook.py

@@ -0,0 +1,105 @@
+from datetime import datetime
+
+from flask import Blueprint, flash, Response, render_template, redirect, url_for
+from flask_wtf import FlaskForm
+from sqlalchemy import exc
+from wtforms import StringField, SelectField, SubmitField
+from wtforms.validators import DataRequired
+
+from app.extensions import db
+from app.models.activity import Webhook
+from app.portal.util import response_404, view_lifecycle
+
+bp = Blueprint("webhook", __name__)
+
+@bp.app_template_filter("webhook_format_name")
+def webhook_format_name(s: str) -> str:
+    if s == "telegram":
+        return "Telegram"
+    if s == "matrix":
+        return "Matrix"
+
+
+class NewWebhookForm(FlaskForm):
+    description = StringField('Description', validators=[DataRequired()])
+    format = SelectField('Format', choices=[
+        ("telegram", "Telegram"),
+        ("matrix", "Matrix")
+    ], validators=[DataRequired()])
+    url = StringField('URL', validators=[DataRequired()])
+    submit = SubmitField('Save Changes')
+
+
+@bp.route("/new", methods=['GET', 'POST'])
+def webhook_new():
+    form = NewWebhookForm()
+    if form.validate_on_submit():
+        webhook = Webhook(
+            description=form.description.data,
+            format=form.format.data,
+            url=form.url.data
+        )
+        try:
+            db.session.add(webhook)
+            db.session.commit()
+            flash(f"Created new webhook {webhook.url}.", "success")
+            return redirect(url_for("portal.webhook.webhook_edit", webhook_id=webhook.id))
+        except exc.SQLAlchemyError as e:
+            flash("Failed to create new webhook.", "danger")
+            return redirect(url_for("portal.webhook.webhook_list"))
+    return render_template("new.html.j2", section="webhook", form=form)
+
+
+@bp.route('/edit/<webhook_id>', methods=['GET', 'POST'])
+def webhook_edit(webhook_id):
+    webhook = Webhook.query.filter(Webhook.id == webhook_id).first()
+    if webhook is None:
+        return Response(render_template("error.html.j2",
+                                        section="webhook",
+                                        header="404 Webhook Not Found",
+                                        message="The requested webhook could not be found."),
+                        status=404)
+    form = NewWebhookForm(description=webhook.description,
+                          format=webhook.format,
+                          url=webhook.url)
+    if form.validate_on_submit():
+        webhook.description = form.description.data
+        webhook.format = form.description.data
+        webhook.url = form.description.data
+        webhook.updated = datetime.utcnow()
+        try:
+            db.session.commit()
+            flash("Saved changes to webhook.", "success")
+        except exc.SQLAlchemyError:
+            flash("An error occurred saving the changes to the webhook.", "danger")
+    return render_template("edit.html.j2",
+                           section="webhook",
+                           title="Edit Webhook",
+                           item=webhook, form=form)
+
+
+@bp.route("/list")
+def webhook_list():
+    webhooks = Webhook.query.all()
+    return render_template("list.html.j2",
+                           section="webhook",
+                           title="Webhooks",
+                           item="webhook",
+                           new_link=url_for("portal.webhook.webhook_new"),
+                           items=webhooks)
+
+
+@bp.route("/destroy/<webhook_id>", methods=['GET', 'POST'])
+def webhook_destroy(webhook_id: int):
+    webhook = Webhook.query.filter(Webhook.id == webhook_id, Webhook.destroyed == None).first()
+    if webhook is None:
+        return response_404("The requested webhook could not be found.")
+    return view_lifecycle(
+        header=f"Destroy webhook {webhook.url}",
+        message=webhook.description,
+        success_message="Webhook destroyed.",
+        success_view="portal.webhook.webhook_list",
+        section="webhook",
+        resource=webhook,
+        action="destroy"
+    )