55 lines
2.3 KiB
Markdown
55 lines
2.3 KiB
Markdown
- [Overview](#overview)
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- [Components](#components)
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- [Boot](#boot)
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<small><i><a href='http://ecotrust-canada.github.io/markdown-toc/'>Table of contents generated with markdown-toc</a></i></small>
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# Overview
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This document will go through various application components
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# Components
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## `internal/boot`
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The boot package in `internal` is utilized to start the application. Everything in the boot process must complete successfully for the application to start. If it does not, the application will not start.
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## `pkg/database`
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The `database` package allows us to interact with a postgres DB. We utilize the interface to ensure we can interact with any `sql` database as well. I copied most of the code here from `vulcanize/go-ethereum`. Down the road, internal teams should be able to reference the package instead of copy pasting it and re-implementing it.
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## `pkg/beaconclient`
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This package will contain code to interact with the beacon client.
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### Known Gaps
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Known Gaps tracking is handled within this package. The columns are as follows:
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- StartSlot - The start slot for known_gaps, inclusive.
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- EndSlot - The end slot for known_gaps, inclusive.
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- CheckedOut - Indicates if any process is currently processing this entry.
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- ErrorMessage - Captures any error message that might have occurred when previously processing this entry.
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- EntryTime - The time this range was added to the DB. This can help us catch ranges that have not been processed for a long time due to some error.
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- EntryProcess - The entry process that added this process. Potential options are StartUp, Error, HeadGap.
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- This can help us understand how a specific entry was added. It can be useful for debugging the application.
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- StartUp - Gaps found when we started the application.
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- Error - Indicates that the entry was added due to an error with processing.
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- HeadGap - Indicates that gaps where found when keeping up with Head.
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## `pkg/version`
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A generic package which can be utilized to easily version our applications.
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## `pkg/gracefulshutdown`
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A generic package that can be used to shutdown various services within an application.
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## `pkg/loghelper`
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This package contains useful functions for logging.
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## `internal/shutdown`
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This package is used to shutdown the `ipld-eth-beacon-indexer`. It calls the `pkg/gracefulshutdown` package.
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