Previously, lychee would blindly retry all requests,
no matter if the request error was transient or fatal.
Taking a lesson from https://github.com/TrueLayer/reqwest-middleware,
we can be more granular about the error behavior.
This PR adds their retry logic to lychee, reducing the number of
unnecessary requests significantly.
I also made some ergonomic changes to the client, which should not
affect its behavior.
`lychee_lib::client`:
- Improved documentation.
- Added an log message in `ClientBuilder::client()` when provied user-agent
overrides the one defined in provied custom header.
- Removed unnecessary error handling in `Client::check()` when setting HTTPS
scheme because all failure cases should occur when checking this URL the first
time already.
- Removed unnecessary error handling in `Client::remap()` since
`lychee-lib::remap::Remaps::remap()` doesn't returns a `Result` anymore.
- Fixed potential integer overflow in `Client::check_website()` when the wait
time between retries doubles, by using `std::time::Duration::saturating_mul`
instead.
- Renamed `invalid()` to `validate_url()`.
`lychee_lib::remap`:
- Improved documentation, in particular, clarified (in the comment) that it's
URLs not URIs being remapped.
- Changed `Remaps::remap()` so it takes `&mut Url` instead of `Uri` as its
argument, and doesn't return a `Result` as a result.
- Using `Url` instead of `Uri` because it aligns with the concept of
remapping locations rather than identifiers.
- Mutating the URL directly instead of returning a new one for it's more
straightforward.
- There is no error handling because we don't convert from URL to URI
anymore. Furthermore, this always succeed in the first place so we never
needed error handling.
- Added implementation of `IntoIterator` for `&'a Remaps` and convenience method
of `Remaps::iter`. (Their mutable or moving counterparts are deliberately
avoided because we don't want library users to modify all consume the
remapping rules after its instantiation.)
`lychee_lib::error`:
- Renamed `ErrorKind::InvalidUriRemap` to `InvalidUrlRemap` and improved
its error message.
Changes to other modules are minor and only serves to accompany aforementioned
changes.
Remaps allow mapping from a URI pattern to a different URI.
The syntax is
```
lychee --remap 'https://example.comhttp://127.0.0.1'
```
Some use-cases are
- Testing URIs prior to production deployment
- Testing URIs behind a proxy
Be careful when using this feature because checking every link against a
large set of regular expressions has a performance impact. Also there are no
constraints on the URI mapping, so the rules might contradict with each
other.
Remap rules get applied in order of definition to every input URI.
This commit mainly added or improved documentation for `lychee-lib::client`
module.
But it also contains a few API changes:
- `ClientBuilder::client()` now consumes itself instead of taking a reference.
This helps to avoid a few unnecessary clones.
- `ClientBuilder::build_filter()` was a private function and is inlined to avoid
unnecessary clones.
- Added a new crate-scoped function `Uri::set_scheme()`.
* added notes on deprecated site-local network
Co-authored-by: Lucius Hu <lebensterben@users.noreply.github.com>
A while ago, caching was removed due to some issues (see #349).
This is a new implementation with the following improvements:
* Architecture: The new implementation is decoupled from the collector, which was a major issue in the last version. Now the collector has a single responsibility: collecting links. This also avoids race-conditions when running multiple collect_links instances, which probably was an issue before.
* Performance: Uses DashMap under the hood, which was noticeably faster than Mutex<HashMap> in my tests.
* Simplicity: The cache format is a CSV file with two columns: URI and status. I decided to create a new struct called CacheStatus for serialization, because trying to serialize the error kinds in Status turned out to be a bit of a nightmare and at this point I don't think it's worth the pain (and probably isn't idiomatic either).
This is an optional feature. Caching only gets used if the `--cache` flag is set.
This avoids creating a DOM tree for link extraction and instead uses a `TokenSink` for on-the-fly extraction. In hyperfine benchmarks it was about 10-25% faster than the master.
Old: 4.557 s ± 0.404 s
New: 3.832 s ± 0.131 s
The performance fluctuates a little less as well.
Some missing element/attribute pairs were also added, which contain links according to the HTML spec. These occur very rarely, but it's good to parse them for completeness' sake.
Furthermore tried to clean up a lot of papercuts around our types. We now differentiate between a `RawUri` (stringy-types) and a Uri, which is a properly parsed `URI` type.
The extractor now only deals with extracting `RawUri`s while the collector creates the request objects.
* Move to from vec to streams
Previously we collected all inputs in one vector
before checking the links, which is not ideal.
Especially when reading many inputs (e.g. by using a glob pattern),
this could cause issues like running out of file handles.
By moving to streams we avoid that scenario. This is also the first
step towards improving performance for many inputs.
To stay as close to the pre-stream behaviour, we want to stop processing
as soon as an Err value appears in the stream. This is easiest when the
stream is consumed in the main thread.
Previously, the stream was consumed in a tokio task and the main thread
waited for responses.
Now, a tokio task waits for responses (and displays them/registers
response stats) and the main thread sends links to the ClientPool.
To ensure that the main thread waits for all responses to have arrived
before finishing the ProgressBar and printing the stats, it waits for
the show_results_task to finish.
* Return collected links as Stream
* Initialize ProgressBar without length because we can't know the amount of links without blocking
* Handle stream results in main thread, not in task
* Add basic directory support using jwalk
* Add test for HTTP protocol file type (http://)
* Remove deadpool (once again): Replaced with `futures::StreamExt::for_each_concurrent`.
* Refactor main; fix tests
* Move commands into separate submodule
* Simplify input handling
* Simplify collector
* Remove unnecessary unwrap
* Simplify main
* cleanup check
* clean up dump command
* Handle requests in parallel
* Fix formatting and lints
Co-authored-by: Timo Freiberg <self@timofreiberg.com>
* Reqwest comes with its own request pool, so there's no need in adding
another layer of indirection. This also gets rid of a lot of allocs.
* Remove cache from collector
* Improve error handling and documentation
* Add back test for request caching in single file
Signed-off-by: MichaIng <micha@dietpi.com>
Co-authored-by: Matthias <matthias-endler@gmx.net>
- Major changes in `lychee-lib::filter` module:
- Fields in `Excludes` except the `RegexSet` is now moved to `Filter`.
- `Filter` contains `Option<Excludes>` and `Option<Includes>`, which are
wrapper struct of `RegexSet` instead of `Option<RegexSet>`. As a result
the code now looks cleaner.
- Factored out some filtering logics to dedicated functions.
- It's possible to write tests for those functions in addition to tests
for the `Filter` struct.
- Added docs to `Filter::is_excluded` and reorgnized the code.
- placed `derive_builder` by `typed_builder`:
- The internal interface very ugly, as admitted by the author, but we no
longer have nested `Option`s like before.
- As a result, the `Client` building is much easier to read.
- Main benefit of `typed_builder` is, the arguments feeded to builder is
checked at compile time instead of run-time.
- Fixed a bug in `lychee::tests::usage` and `lychee-lib::stats::test`.
- Now it will clear environment variable which would otherwise cause an
issue if `GITHUB_TOKEN` is set.
- Updated dependencies.
Co-authored-by: Lucius Hu <lebensterben@users.noreply.github.com>
- The binary component and library component are separated as two
packages in the same workspace.
- `lychee` is the binary component, in `lychee-bin/*`.
- `lychee-lib` is the library component, in `lychee-lib/*`.
- Users can now install only the `lychee-lib`, instead of both
components, that would require fewer dependencies and faster
compilation.
- Dependencies for each component are adjusted and updated. E.g.,
no CLI dependencies for `lychee-lib`.
- CLI tests are only moved to `lychee`, as it has nothing to do
with the library component.
- `Status::Error` is refactored to contain dedicated error enum,
`ErrorKind`.
- The motivation is to delay the formatting of errors to strings.
Note that `e.to_string()` is not necessarily cheap (though
trivial in many cases). The formatting is no delayed until the
error is needed to be displayed to users. So in some cases, if
the error is never used, it means that it won't be formatted at
all.
- Replaced `regex` based matching with one of the following:
- Simple string equality test in the case of 'false positivie'.
- URL parsing based test, in the case of extracting repository and
user name for GitHub links.
- Either cases would be much more efficient than `regex` based
matching. First, there's no need to construct a state machine for
regex. Second, URL is already verified and parsed on its creation,
and extracting its components is fairly cheap. Also, this removes
the dependency on `lazy-static` in `lychee-lib`.
- `types` module now has a sub-directory, and its components are now
separated into their own modules (in that sub-directory).
- `lychee-lib::test_utils` module is only compiled for tests.
- `wiremock` is moved to `dev-dependency` as it's only needed for
`test` modules.
- Dependencies are listed in alphabetical order.
- Imports are organized in the following fashion:
- Imports from `std`
- Imports from 3rd-party crates, and `lychee-lib`.
- Imports from `crate::*` or `super::*`.
- No glob import.
- I followed suggestion from `cargo clippy`, with `clippy::all` and
`clippy:pedantic`.
Co-authored-by: Lucius Hu <lebensterben@users.noreply.github.com>
