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README.md

The Swift Package Index

Find the best Swift libraries and frameworks that support the Swift Package Manager.

Reconciliation, Ingestion, and Analysis

The command processes that fetch and parse package metadata are broken up into three separate commands.

  1. Reconciliation: Fetch the package list and reconcile it with the database, adding or deleting rows in the packages table.
  2. Ingestion: Fetch GitHub (or in the future, other hosting services) metadata for a set of package candidates returned by Package.fetchCandidates(app.db, for: .ingestion, limit: 10) and create or update rows in the repositories table.
  3. Analysis: Clone or pull the full git history for a set of package candidates returned by Package.fetchCandidates(app.db, for: .analysis, limit: 10) and create or replace rows in versions and products.

Running this project

The Makefile defines a set of useful targets to get up and running. Make sure you have Docker installed and running, then run:

make db-up

This will bring up two Postgres database docker containers (one for development, the other for the tests). Then, run:

make migrate

This will set up the schema (or migrate it, if you've made changes) on the development database.

make run

This will bring up a local development server.

Running the project from Xcode

Alternatively, you can open the Package.swift file in Xcode and run the server from there. However, it's important to set a custom working directory before running. To do this, navigate to the Product | Scheme | Edit Scheme... menu or press ⌘+<. Select the Run scheme action and select the Options tab. Finally, check the Working Directory checkbox and enter the directory where you have this source code checked out.

Resetting the database

You can reset the database to a clean slate by tearing down the containers by running:

make db-reset

This command will destroy both the development, and test docker containers. Recreate them, and finally migrate the development database.

Running an end-to-end test

Once you're all set up, run:

make test-e2e

This will kick off a local test run of the server update process (reconciliation, ingestion, and analysis) processing just one package. This is a good way to verify everything is working.

Running ingestion locally

The ingest-loop.sh script can serve as a simple way to run a full ingestion cycle:

make reset        # clear dev db
make reconcile    # import package list
./scripts/ingest-loop.sh  # ingest metadata for 100 packages, pause for 10 sec, repeat

If you want to run ingestion for anything other than a cursory test, you'll need authenticated API calls. To do this, set a GITHUB_TOKEN environment variable to a generated personal token which has the public_repo and repo:status scopes.

Running analysis locally

You can run the analysis step locally by running

make analyze

This will run the analysis stage for one package (--limit 1).

NB: The analysis step will check out repositories to your local file system, by default into a directory SPI-checkouts in your project folder. You can change this location by setting the environment variable CHECKOUTS_DIR to another path.

API poking

NB: The API is currently disabled. Uncomment the api routes in Sources/routes.swift to re-enable them.

You can poke at the API using Rester by running the Restfile test.restfile:

rester restfiles/test.testfile

This does not replace testing but helps with API exploration and integration testing.

Running the full stack locally

Set up the required environment variables in an .env file and run

env VERSION=0.4.5 docker-compose up -d

where the VERSION variable references a tag name or a git sha.

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