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47 lines
1.5 KiB
Markdown
47 lines
1.5 KiB
Markdown
# Cloudflare Workers
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Source code for our
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[Cloudflare Workers](https://developers.cloudflare.com/workers/).
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Workers are organized as Yarn workspaces sharing a common `package.json` and
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base `tsconfig`. They can however be deployed individually.
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## Deploying
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Install dependencies with `yarn`.
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> If you have previously deployed, then you will have an old `yarn.lock`. In
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> this case it is safe to delete and recreate using `rm yarn.lock && yarn`.
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Then, to deploy an individual worker
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- Login into wrangler (if needed) using
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`yarn workspace health-check wrangler login`
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- Deploy! `yarn workspace health-check wrangler deploy`
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Wrangler is the CLI provided by Cloudflare to manage workers. Apart from
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deploying, it also allows us to stream logs from running workers by using
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`yarn workspace <worker-name> wrangler tail`.
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## Creating a new worker
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Copy paste an existing one. Unironically this is a good option because
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Cloudflare's template has a lot of unnecessary noise, but if really do want to
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create one from scratch, use `npm create cloudflare@latest`.
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To import an existing worker from the Cloudflare dashboard, use
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```sh
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npm create cloudflare@2 existing-worker-name -- --type pre-existing --existing-script existing-worker-name
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```
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## Logging
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Attach the tail worker to your worker by adding
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tail_consumers = [{ service = "tail" }]
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in its `wrangler.toml`. Then any `console.(log|warn|error)` statements and
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uncaught exceptions in your worker will be logged to Grafana.
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