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.
* Trailing slashes are now allowed in all normalized URI paths, except
for route attribute URIs: `/foo/` is considered normalized.
* Query parts of URIs may now be empty: `/foo?` and `/foo/?` are now
considered normalized.
* The `base` field of `Catcher` is now only accessible via a new
getter method: `Catcher::base()`.
* `RawStr::split()` returns a `DoubleEndedIterator`.
* Introduced a second normalization for `Origin`, "nontrailing", and
associated methods: `Origin::normalize_nontrailing()`, and
`Origin::is_normalized_nontrailing()`.
* Added `Origin::has_trailing_slash()`.
* The `Segments<Path>` iterator will now return an empty string if
there is a trailing slash in the referenced path.
* `Segments::len()` is now `Segments::num()`.
* Added `RawStr::trim()`.
Resolves#2512.
The core 'Rocket' type is parameterized: 'Rocket<P: Phase>', where
'Phase' is a newly introduced, sealed marker trait. The trait is
implemented by three new marker types representing the three launch
phases: 'Build', 'Ignite', and 'Orbit'. Progression through these three
phases, in order, is enforced, as are the invariants guaranteed by each
phase. In particular, an instance of 'Rocket' is guaranteed to be in its
final configuration after the 'Build' phase and represent a running
local or public server in the 'Orbit' phase. The 'Ignite' phase serves
as an intermediate, enabling inspection of a finalized but stationary
instance. Transition between phases validates the invariants required
by the transition.
All APIs have been adjusted appropriately, requiring either an instance
of 'Rocket' in a particular phase ('Rocket<Build>', 'Rocket<Ignite>', or
'Rocket<Orbit>') or operating generically on a 'Rocket<P>'.
Documentation is also updated and substantially improved to mention
required and guaranteed invariants.
Additionally, this commit makes the following relevant changes:
* 'Rocket::ignite()' is now a public interface.
* 'Rocket::{build,custom}' methods can no longer panic.
* 'Launch' fairings are now 'ignite' fairings.
* 'Liftoff' fairings are always run, even in local mode.
* All 'ignite' fairings run concurrently at ignition.
* Launch logging occurs on launch, not any point prior.
* Launch log messages have improved formatting.
* A new launch error kind, 'Config', was added.
* A 'fairing::Result' type alias was introduced.
* 'Shutdown::shutdown()' is now 'Shutdown::notify()'.
Some internal changes were also introduced:
* Fairing 'Info' name for 'Templates' is now 'Templating'.
* Shutdown is implemented using 'tokio::sync::Notify'.
* 'Client::debug()' is used nearly universally in tests.
Resolves#1154.
Resolves#1136.
...because loading up a Rocket while it's ignited is a bad idea.
More seriously, because 'Rocket.ignite()' will become an "execute
everything up to here" method.
This commits makes the following high-level changes:
* 'ShutdownHandle' is renamed to 'Shutdown'.
* 'Rocket::shutdown_handle()' is renamed to 'Rocket::shutdown()'.
* '#[launch]` is preferred to '#[rocket::launch]'.
* Various docs phrasings are improved.
* Fixed various broken links in docs.
This commits rearranges top-level exports as follows:
* 'shutdown' module is no longer exported.
* 'Shutdown' is exported from the crate root.
* 'Outcome' is not longer exported from the root.
* 'Handler', 'ErrorHandler' are no longer exported from the root.
Sergio Benitez
许杰友 Jieyou Xu (Joe)
Jeb Rosen