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.
Previously, the heartbeat message, in its raw form, was ":\n\n". This
commit changes the message to be ":\n".
The former message, when parsed as Server-Sent Events, contained an
empty comment (as desired) _and_ a new line (erroneously). The new line
resulted in emitting any event that was presently being emitted, even if
it wasn't complete. That is, emitting an event partly, such as the
event's data but not its name. Removing the extra new line resolves this
issue and ensures that events aren't interrupted by the heartbeat.
Fixes#2152.
The primary aim of this commit is to reduce confusion between
'content::Json' and 'rocket::serde::json::Json' be renaming the former
to 'content::RawJson'. The complete changes in this PR are:
* All responders in the 'content' module are prefixed with 'Raw'.
* The 'content::Custom' responder was removed entirely.
* The 'Plain' responder is now 'RawText'.
* The 'content' API docs point to the 'serde' responders.
* The docs and examples were updated accordingly.
This has the following nice benefits:
* The 'JsonValue' wrapper type is gone.
* 'Local{Request, Response}' natively support JSON/MessagePack.
* The 'json' and 'msgpack' limits are officially recognized.
* Soon, Rocket application will not require an explicit 'serde' dep.
This marks the beginning of the end of 'rocket_contrib'.
This commit entirely rewrites Rocket's URI parsing routines and
overhauls the 'uri!' macro resolving all known issues and removing any
potential limitations for compile-time URI creation. This commit:
* Introduces a new 'Reference' URI variant for URI-references.
* Modifies 'Redirect' to accept 'TryFrom<Reference>'.
* Introduces a new 'Asterisk' URI variant for parity.
* Allows creation of any URI type from a string literal via 'uri!'.
* Enables dynamic/static prefixing/suffixing of route URIs in 'uri!'.
* Unifies 'Segments' and 'QuerySegments' into one generic 'Segments'.
* Consolidates URI formatting types/traits into a 'uri::fmt' module.
* Makes APIs more symmetric across URI types.
It also includes the following less-relevant changes:
* Implements 'FromParam' for a single-segment 'PathBuf'.
* Adds 'FileName::is_safe()'.
* No longer reparses upstream request URIs.
Resolves#842.
Resolves#853.
Resolves#998.
...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.
The new examples directory...
* Contains a `README.md` explaining each example.
* Consolidates examples into more complete chunks.
* Is just better.
Resolves#1447.
