This commit complete the migration to 'tracing' for all logging. Below
is a summary of all relevant commits, including this one:
Log improvements:
- All log (trace) messages are structured which means they contain fields
that can formatted by any subscriber.
- Logging can be disabled entirely by disabling the default `trace` feature.
- Routes and catchers now contain location (file/line) information.
- Two log format kinds: pretty and compact via ROCKET_LOG_FORMAT
- Coloring is not disabled globally. Thus applications can color even if
Rocket is configured not to.
- Rocket is more conservative about 'warn' and 'error' messages, reserving
those log levels for messages useful in production.
- Errors from guards logged by codegen now use the 'Display' implementation of
those errors when one exists.
- Secrets are never logged, even when directly asked for.
New features:
- Many Rocket types know how to trace themselves via a new `Trace` trait.
- `Either` types can now be used in `uri!()` calls.
- A `RequestIdLayer` tags all requests with a unique ID.
Breaking changes to configuration:
- `Config::log_level` is of type `Option<Level>`. `None` disables tracing.
- `log_level` now uses the traditional log level names: "off", "error",
"warn", "info", "debug", "trace", or 0-5. This replace the Rocket-specific
"normal", "debug", "critical".
- A new option, `log_format`, which is either `compact` or `pretty`,
determines how Rocket's tracing subscriber log trace messages.
Breaking changes:
- Hidden `rocket::Either` is now publicly available at `rocket::either::Either`.
- `rocket::Error` no longer panics when dropped.
- `main` generated by `#[launch]` returns an `ExitCode`.
- `FromParam` `Err` now always returns the actual error as opposed to the
string that failed to parse. To recover the original string, use `Either<T,
&str>`, where `T: FromParam`, as a parameter guard.
- Many types that implemented `Display` now instead implement `Trace`.
- `Error::pretty_print()` was removed. Use `Error::trace()` via `Trace` impl.
Internal improvements:
- Made more space in CI machines for tasks.
- Cleaned up testbench code using `inventory`.
Resolves#21.
This commit completely rewrites Rocket's HTTP serving. In addition to
significant internal cleanup, this commit introduces the following major
features:
* Support for custom, external listeners in the `listener` module.
The new `listener` module contains new `Bindable`, `Listener`, and
`Connection` traits which enable composable, external
implementations of connection listeners. Rocket can launch on any
`Listener`, or anything that can be used to create a listener
(`Bindable`), via a new `launch_on()` method.
* Support for Unix domain socket listeners out of the box.
The default listener backwards compatibly supports listening on Unix
domain sockets. To do so, configure an `address` of
`unix:path/to/socket` and optional set `reuse` to `true` (the
default) or `false` which controls whether Rocket will handle
creating and deleting the unix domain socket.
In addition to these new features, this commit makes the following major
improvements:
* Rocket now depends on hyper 1.
* Rocket no longer depends on hyper to handle connections. This allows
us to handle more connection failure conditions which results in an
overall more robust server with fewer dependencies.
* Logic to work around hyper's inability to reference incoming request
data in the response results in a 15% performance improvement.
* `Client`s can be marked secure with `Client::{un}tracked_secure()`,
allowing Rocket to treat local connections as running under TLS.
* The `macros` feature of `tokio` is no longer used by Rocket itself.
Dependencies can take advantage of this reduction in compile-time
cost by disabling the new default feature `tokio-macros`.
* A new `TlsConfig::validate()` method allows checking a TLS config.
* New `TlsConfig::{certs,key}_reader()`,
`MtlsConfig::ca_certs_reader()` methods return `BufReader`s, which
allow reading the configured certs and key directly.
* A new `NamedFile::open_with()` constructor allows specifying
`OpenOptions`.
These improvements resulted in the following breaking changes:
* The MSRV is now 1.74.
* `hyper` is no longer exported from `rocket::http`.
* `IoHandler::io` takes `Box<Self>` instead of `Pin<Box<Self>>`.
- Use `Box::into_pin(self)` to recover the previous type.
* `Response::upgrade()` now returns an `&mut dyn IoHandler`, not
`Pin<& mut _>`.
* `Config::{address,port,tls,mtls}` methods have been removed.
- Use methods on `Rocket::endpoint()` instead.
* `TlsConfig` was moved to `tls::TlsConfig`.
* `MutualTls` was renamed and moved to `mtls::MtlsConfig`.
* `ErrorKind::TlsBind` was removed.
* The second field of `ErrorKind::Shutdown` was removed.
* `{Local}Request::{set_}remote()` methods take/return an `Endpoint`.
* `Client::new()` was removed; it was previously deprecated.
Internally, the following major changes were made:
* A new `async_bound` attribute macro was introduced to allow setting
bounds on futures returned by `async fn`s in traits while
maintaining good docs.
* All utility functionality was moved to a new `util` module.
Resolves#2671.
Resolves#1070.
This has the following positive effects:
1) The lifetime retrieved through 'Deref' is now long-lived.
2) An '&State<T>` can be created via an '&T'.
3) '&State<T>' is shorter to type than 'State<'_, T>'.
Sentinels resolve a long-standing usability and functional correctness
issue in Rocket: starting an application with guards and/or responders
that depend on state that isn't available. The canonical example is the
'State' guard. Prior to this commit, an application with routes that
queried unmanaged state via 'State' would fail at runtime. With this
commit, the application refuses to launch with a detailed error message.
The 'Sentinel' docs explains it as:
A sentinel, automatically run on ignition, can trigger a launch
abort should an instance fail to meet arbitrary conditions. Every
type that appears in a mounted route's type signature is eligible to
be a sentinel. Of these, those that implement 'Sentinel' have their
'abort()' method invoked automatically, immediately after ignition,
once for each unique type. Sentinels inspect the finalized instance
of 'Rocket' and can trigger a launch abort by returning 'true'.
The following types are now sentinels:
* 'contrib::databases::Connection' (any '#[database]' type)
* 'contrib::templates::Metadata'
* 'contrib::templates::Template'
* 'core::State'
The following are "specialized" sentinels, which allow sentinel
discovery even through type aliases:
* 'Option<T>', 'Debug<T>' if 'T: Sentinel'
* 'Result<T, E>', 'Either<T, E>' if 'T: Sentinel', 'E: Sentinel'
Closes#464.
Sergio Benitez
pennae