* ci: Update GitHub actions and linter.
* Update go deps.
* Include commit ID in build info.
Introduced in go 1.18, debug.ReadBuildInfo allows a go process to discover the git commit it was built from.
Periodic database backups are no longer started automatically in database.Open(), and the backup written by database.Close() can now be disabled.
Only vspd itself requires backups, they are not useful for test code or future upcoming tools such as vote-validator.
* Update linter to 1.49.0
* Move vspd into cmd directory.
This is standard practise in Decred golang repos. Especially useful when multiple executables are built from a single repo.
* Ignore bins in new dir.
This removes all of the global loggers from the project and replaces them with loggers which are instantiated in vspd.go and passed down as params.
To support this, the background package was removed. It only contained one file so it was a bit pointless anyway. It only existed so background tasks could have their own named logger.
While removing the globals from background.go it also made sense to clean up the use of dcrd RPC clients. Previously two seperate clients were maintained, one for making RPC calls and one for receiving notifications. These clients have been unified.
- Rename all instances to "shutdownCtx" to be really explicit. This context is special in that it can be closed at any time without warning, so it should be obvious to the reader.
- Don't use shutdownCtx in RPC clients. Clients should not stop working immediately when shutdown is signalled, they need to keep working while the process is shutting down.
No reason for this to be a standalone func with a param when it can be a method of VspDatabase. This will be useful later when VspDatabase contains its own logger.
`CanTicketVote` doesn't really fit into the RPC client code as it is more of a business logic function. Moving it into the webapi package is more appropriate.
Running as sub-tests has the benefit of automatically logging the test name, no need to include it in failure messages manually. It even works if the test panics.
* Remove global cache variable.
Rather than maintaining cached data in a global variable, instantiate a cache struct and keep it in the `Server` struct.
* Store net params in RPC clients.
This means net params only need to be supplied once at startup, and also removes a global instance of net params in `background.go`.
- Rather than manually downloading and invoking golangci-lint, use the GitHub
action provided by the developers.
- Configure golangci with a config file rather than passing command line args.
This enables the same config to be used locally and on CI without introducing
duplication. It also allows much more flexibililty in configuration than using
CLI args alone.
GitHub is now capable of rendering mermaid.js diagrams, so we don't need to maintain a separate source and rendered .png file. The mermaid source can be embedded directly into the documentation itself.
This allows both tspend and treasury policies to be set by clients on a per-ticket basis. Preferences can be set when initially registering a ticket with `/payfee`, and can be later updated using `/setvotechoices`.
Any requests which alter treasury/tspend policy will be stored in the database using the existing accountability system.
**Note:** This does not include consistency checking, it will need to be added later when dcrwallet has an RPC to retrieve policies in batches.
vspd will now call dcrd RPC `getblockchaininfo` to determine if DCP-0010 is active, and take that information into consideration when calculating ticket registration fee.
