Prevent `rad` from panicking when its stdout is a closed pipe, e.g.
when running `rad config | head`.
The broken pipes are handled at the output boundaries using three
layers of defence:
1. Inner: Route all stdout output through `term::print()` and
`term::print_inline()`, which use explicit `writeln!`/`write!` to
a locked stdout and silently ignore write errors. All `println!`
calls in `radicle-cli` and `radicle-term` are converted.
2. Middle: Catch `BrokenPipe` errors that propagate up via `anyhow`
from subcommands in `main::run()`, and exit cleanly with code 0.
3. Outer: Install a panic hook that intercepts `println!` panics
containing "Broken pipe" (from dependencies like clap) and exits
cleanly, chained in front of human_panic's hook.
To prevent regressions, `#![deny(clippy::print_stdout)]` is added to
`radicle-cli`, requiring all future stdout output to go through the
safe `term::` functions.
Note: `eprintln!` calls (stderr) are not handled, as broken stderr
pipes are extremely rare in practice.
Teach the `rad sync` and `rad clone` commands to accept the
`--signed-refs-feature-level` option. This option configures that
fetch to use the minimum feature level provided when fetching from
other nodes. This overrides the value of
`node.fetch.signedReferences.featureLevel.minimum`, and should only be
used in scenarios where it is necessary to downgrade the security of a
fetch for backwards compatibility.
To achieve this, the `Handle::fetch` method introduces an optional
parameter for threading through the `FeatureLevel`.
The `localtime` crate was defined by cloudhead, and is a minimal
repository with a single `lib.rs`.
Instead of using it as an external dependency, copy the code directly
into a new workspace crate `radicle-localtime`.
The default `serde` implementation goes through the `LocalTime`'s
seconds values rather than milliseconds, since this is the more common
format. This allows the removal of the `serde_ext` functions.
The one place milliseconds was used was for the
`radicle::cob::common::Timestamp` type, where the `Serialize` and
`Deserialize` implementations are manually written.
It also adds a `schemars` feature to remove `schemars_ext` functions
in `radicle` as well.
Fintan Halpenny
Lorenz Leutgeb