feat: add reload_plugin and unload_plugin admin RPCs

[0xsouravm]

Changes:

• Added unload_plugin(meta, name) and reload_plugin(meta, name, config_file) RPC methods
• Extended PluginManagerCommand enum with UnloadPlugin and ReloadPlugin variants
• Created helper functions load_subgraph_plugin() and unload_plugin_by_uuid() to eliminate code duplication
• Refactored the handler LoadConfig to use helpers and added UnloadPlugin and ReloadPlugin handler
• Added plugin_uuid_map: HashMap<Uuid, usize> to track plugin indices for efficient unload/reload
• Added DestoryCollection command to SubgraphCommand to destroy associated collection after unloading a plugin
• Added unregister_collection and remove_collection methods to use in DestroyCollection command

Reference: #330

[lgalabru]

That's awesome, thanks @0xsouravm!
Have you been able to test this additions with Yellowstone or any other Geyser plugin?

[0xsouravm]

No worries @lgalabru !!
I am actually struggling with the config file. I am trying to curl but I cannot get the config JSON right. Hence the serde parsing fails during load_plugin

[lgalabru]

@0xsouravm what's the issue you're seeing? if you're using Yellowstone, I think there's an issue with the proposed config file from the example in the repo - something with the plugin name that should not be there or something.

[0xsouravm]

@lgalabru I was trying with the example config as @MicaiahReid suggested but the config JSON doesn't sit correctly. Can you tell me how load_config was previously tested? I could get the others working if I get the load_config working.

[MicaiahReid]

Apologies on the latency for this PR, @0xsouravm 🙏

I spent some time testing this today. Here are the steps to test:

1. Build an anchor project with subgraphs set up. This example project would work: https://github.com/txtx/surfpool-examples/tree/main/anchor/simple-pda
2. Start surfpool in the root of that project with subgraphs
3. You'll see the subgraphs deployed and a UUID for the subgraph
4. Send the uuid in an unloadPlugin RPC method

I found that this does not work out of the box, but actually crashes surfpool.

[MicaiahReid]

Previously, the return result would yield the TUI logging:

Now, the TUI logs this, which doesn't really make much sense:

If we're going to log the UUID, it should be via simnet_events_tx.try_send(SimnetEvent::info(...)), and return the endpoint_url for this fn

[0xsouravm]

I added logging through simnet_events_tx as you mentioned!

[0xsouravm]

Hey @MicaiahReid ! No worries and thank you for guiding me how to test it. I ran into the same issues as you and now I fixed those and unload_plugin works as intended!

The issue - We weren't destroying the associated collection after unloading the plugin
The fix - Added a new subgraph command that handles destroying collections upon unload.

Please check out the above screenshot for the logs!

[MicaiahReid]

This will need to be fixed before merge, you should be using the notifier passed into PluginManagerCommand::LoadConfig