Add --min-version= option to gateway

[tbrand]

Overview

This is a sub-task of #5

For security and stability issues, the gateway should be able to filter the minimum version of the node to be randomly selected. The --min-version option will result in a random selection of nodes from among nodes with versions newer than that version.

For example, If you do not want to target versions below version 0.1.5, specify this.

--min-version=0.1.5

Implementation

• Nodes already return their version to the node pool and the node pool returns them to gateways. (Returning version #7)
• Here is the version gateway received.

So all you have to do for this issue is

• Add new option --min-version to this struct.
• Filter the unselected nodes here. Remove the nodes below the version.
• For version comparison, you can add semver crate.

[Darth-Ness]

Okay, I'm going to try to do this one.

[Darth-Ness]

All right, I made an implementation. Would I test it by running
rustc main.rs then executing the binary?

[tbrand]

Awesome. You should do cargo run -p negy-gateway to build and run the package. You can replace negy-gateway with negy-node or negy-node-pool if you edit those files. To confirm the behavior of the implementation, execute docker-compose up --build. After every container is up, execute curl https://example.com -x http://localhost:3000 and confirm the result.

Thanks!

[Darth-Ness]

docker-compose up --build

Thanks for the instructions.
The cargo command works, but the
docker-compse up --build command outputs

Version in "./docker-compose.yml" is unsupported. You might be seeing this error because you're using the wrong Compose file version. Either specify a supported version (e.g "2.2" or "3.3") and place your service definitions under the services key, or omit the version key and place your service definitions at the root of the file to use version 1.
For more on the Compose file format versions, see https://docs.docker.com/compose/compose-file/

Does this have something to with my version of docker-compose?
If so docker-compse version outputs

docker-compose version 1.21.0, build unknown
docker-py version: 3.4.1
CPython version: 3.7.3
OpenSSL version: OpenSSL 1.1.1n 15 Mar 2022

[tbrand]

Yes, you should update docker-compose version. 👍

[Darth-Ness]

Now that this has been implemented in #22, you should be able to close this.

[tbrand]

awesome