Glados

Network health monitoring tool for the Portal Network

Project Overview

The project is split up into a few different crates.

• glados-core: Contains shared code that is shared by the other crates.
• glados-web: The web application that serves the HTML dashboard
• glados-monitor: The long running system processes that pull in chain data and audit the portal network.

Technology Choices

• sea-orm - ORM and database migrations. The entity and migration crates are sea-orm conventions.
• axum - Web framework for serving HTML.
• askama - Templating for HTML pages.
• web3 - For querying an Ethereum provider for chain data
• tokio - Async runtime.
• tracing - Structured logging

For our database, we use SQLite for local development and Postgres for production.

Architecture

The rough shape of Glados is as follows:

The glados-monitor crate implements a long running process which continually follows the tip of the chain, and computes the ContentID/ContentKey values for new content as new blocks are added to the canonical chain. These values are inserted into a relational database (SQLite for local dev, Postgres for production).

A second long running process (that has not yet been written) then queries the database for content that it will then "audit" to determine whether the content can be successfully retrieved from the network. The audit process will use the Portal Network JSON-RPC api to query the portal network for the given content and then record in the database whether the content could be successfully retrieved. The database is structured such that a piece of content can be audited many times, giving a historical view over the lifetime of the content showing times when it was or was not available.

The glados-web crate implements a web application to display information from the database about the audits. The goal is to have a dashboard that provides a single high level overview of the network health, as well as the ability to drill down into specific pieces of content to see the individual audit history.

Running Things

For specific examples, see the SETUP_GUIDE.md.

Basics

When using SQLite you can use an ephemeral in-memory database or one persisted to disk. This value is referred to as the DATABASE_URL

• in memory: sqlite::memory:
• persistent: sqlite:////absolute/path/to/db.sqlite

In most cases, you will want to set the environment variable RUST_LOG to enable some level of debug level logs. RUST_LOG=glados_monitor=debug is a good way to only enable the debug logs for a specific crate/namespace.

Running glados-monitor

The glados-monitor crate can be run as follows to populate a local database with content ids.

The CLI needs a DATABASE_URL to know what relational database to connect to, as well as an HTTP_PROVIDER_URI to connect to an Ethereum JSON-RPC provider (not a portal node).

$ cargo run -p glados-monitor -- --database-url <DATABASE_URL> follow-head --provider-url <HTTP_PROVIDER_URI>

For example, if an Ethereum execution client is running on localhost port 8545:

$ cargo run -p glados-monitor -- --database-url sqlite::memory: follow-head --provider-url http://127.0.0.1:8545

Importing the pre-merge accumulators

The pre-merge epoch accumulators can be found here: https://github.com/njgheorghita/portal-accumulators

They can be imported with this command

$ cargo run -p glados-monitor -- --database-url <DATABASE_URL> import-pre-merge-accumulators --path /path/to/portal-accumulators/bridge_content

Running glados-web

The CLI needs a DATABASE_URL to know what relational database to connect to, as well as the IPC_PATH which is an absolute path to an IPC socket for a portal client exposing the portal network JSON-RPC api.

This has only been tested using the trin portal network client.

$ cargo run -p glados-web -- --database-url DATABASE_URL

You should then be able to view the web application at http://127.0.0.1:3001/ in your browser.