fix(florestad): don't panic if a lock cannot be obtained to the datadir, RPC and Electrum ports

[luisschwab]

What is the purpose of this pull request?

• Bug fix
• Documentation update
• New feature
• Test
• Other:

Which crates are being modified?

• floresta-chain
• floresta-cli
• floresta-common
• floresta-compact-filters
• floresta-electrum
• floresta-watch-only
• floresta-wire
• floresta
• florestad
• Other: .

Description

This PR handles errors when trying to bind to already already bound resources (datadir, RPC and Electrum ports).

It logs an error! and then exits via std::process::exit(1):

$ ./target/debug/florestad
[2025-02-04 09:59:04 ERROR florestad::florestad] Cannot obtain a lock on data directory $HOME/.floresta/. Floresta is probably already running.

If using another datadir:

$ ./target/debug/florestad --data-dir=data
[2025-02-04 09:59:13 INFO florestad::florestad] Starting server
[2025-02-04 09:59:13 WARN florestad::florestad] Failed to load SSL certificates, ignoring SSL
[2025-02-04 09:59:13 ERROR florestad::florestad] Failed to bind to address 0.0.0.0:50001. There is probably an Electrum server already running.

Notes to the reviewers

Two tests fail when running cargo test, but they are also failing on master:

failures:

---- tests::test_get_height stdout ----
thread 'tests::test_get_height' panicked at crates/floresta-cli/src/lib.rs:216:47:
called `Result::unwrap()` on an `Err` value: JsonRpc(Rpc(RpcError { code: -32601, message: "Method not found", data: None }))
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

---- tests::test_stop stdout ----
thread 'tests::test_stop' panicked at crates/floresta-cli/src/lib.rs:142:34:
rpc not working: JsonRpc(Json(Error("invalid type: boolean `true`, expected a string", line: 1, column: 4)))

Checklist

• I've signed all my commits
• I ran just lint
• I ran cargo test
• I've checked the integration tests
• I've followed the contribution guidelines
• I'm linking the issue being fixed by this PR (if any)

[jaoleal]

ACK 8c44251

[jaoleal]

Two tests fail when running cargo test, but they are also failing on master:

@luisschwab
This is because the binary in your target/ is from a different version of Floresta than the one your checked into... you need to clear your debug builds and compile florestad right before testing and this error will disappear.