Indexer Agent Configuration by File

[kaiwetlesen]

** RECREATING THIS PR** from PR #395 as the CI pipeline didn't like building off of a fork.

This pull requests implements file-based configuration for the indexer agent such that the configuration file supplements base defaults for a cluster. The idea here is that default values for mainnet, rinkeby, etc can be supplied as code in the repository, with more important parameters being injected via environment variables and CLI flags.

The order of precedence is as follows:

CLI flags
Environment variables
Configuration file parameters

F.eks. running indexer-agent with a configuration file containing ethereum: https://ethereum-node-0:8545 and setting INDEXER_AGENT_ETHEREUM to https://ethereum.hosted.service/accountid/, the effective setting would be https://ethereum.hosted.service/accountid/.

[kaiwetlesen]

Hey @fordN , @chriswessels , and @hopeyen , I've merged in changes from main, which cleaned this PR right up. Ready for review.

Also, the format check for yarn.lock seems to fail, complaining that I'm adding a new package. Ideas?

[hopeyen]

Could you try removing yarn.lock and re yarn?

[fordN]

What do you think about submitting a similar PR for the indexer-service @kaiwetlesen?

[fordN]

Hey @fordN , @chriswessels , and @hopeyen , I've merged in changes from main, which cleaned this PR right up. Ready for review.

Also, the format check for yarn.lock seems to fail, complaining that I'm adding a new package. Ideas?

Can you clean up your commit history here so there is an easily followable path? There should only be one commit for this big of a change and no merge commits.

Incorporated changes

[fordN]

@kaiwetlesen this is still showing 14 commits and includes merge commits. Please rebase on main and squash your commits to a single commit, it's only a 15 line change...

[kaiwetlesen]

this is still showing 14 commits and includes merge commits. Please rebase on main and squash your commits to a single commit, it's only a 15 line change...

@fordN done. Misunderstood what you'd asked for before.

[fordN]

LGTM 👍