diagnostics_log/fuchsia/
mod.rs

1// Copyright 2023 The Fuchsia Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
3
4use crate::PublishOptions;
5use diagnostics_log_types::Severity;
6use fidl::endpoints::ClientEnd;
7use fidl_fuchsia_logger::{
8    LogSinkEvent, LogSinkMarker, LogSinkOnInitRequest, LogSinkProxy, LogSinkSynchronousProxy,
9};
10use fuchsia_async as fasync;
11use fuchsia_component_client::connect::connect_to_protocol;
12use futures::stream::StreamExt;
13use std::borrow::Borrow;
14use std::collections::HashSet;
15use std::fmt::Debug;
16use std::sync::{Arc, Mutex};
17use thiserror::Error;
18
19#[cfg(fuchsia_api_level_less_than = "27")]
20use fidl_fuchsia_diagnostics::Interest;
21#[cfg(fuchsia_api_level_at_least = "27")]
22use fidl_fuchsia_diagnostics_types::Interest;
23
24mod filter;
25mod sink;
26
27use filter::InterestFilter;
28use sink::{BufferedSink, IoBufferSink, Sink, SinkConfig};
29
30pub use diagnostics_log_encoding::Metatag;
31pub use diagnostics_log_encoding::encode::{LogEvent, TestRecord};
32pub use paste::paste;
33
34#[cfg(test)]
35use std::{
36    sync::atomic::{AtomicI64, Ordering},
37    time::Duration,
38};
39
40/// Callback for interest listeners
41pub trait OnInterestChanged {
42    /// Callback for when the interest changes
43    fn on_changed(&self, severity: Severity);
44}
45
46/// Options to configure a `Publisher`.
47#[derive(Default)]
48pub struct PublisherOptions<'t> {
49    blocking: bool,
50    pub(crate) interest: Interest,
51    listen_for_interest_updates: bool,
52    log_sink_client: Option<ClientEnd<LogSinkMarker>>,
53    pub(crate) metatags: HashSet<Metatag>,
54    pub(crate) tags: &'t [&'t str],
55    pub(crate) always_log_file_line: bool,
56    register_global_logger: bool,
57}
58
59impl Default for PublishOptions<'static> {
60    fn default() -> Self {
61        Self {
62            publisher: PublisherOptions {
63                // Default to registering the global logger and listening for interest updates for
64                // `PublishOptions` because it's used by the `initialize...` functions which are
65                // typically called at program start time.
66                listen_for_interest_updates: true,
67                register_global_logger: true,
68                ..PublisherOptions::default()
69            },
70            install_panic_hook: true,
71            panic_prefix: None,
72        }
73    }
74}
75
76macro_rules! publisher_options {
77    ($(($name:ident, $self:ident, $($self_arg:ident),*)),*) => {
78        $(
79            impl<'t> $name<'t> {
80                /// Whether or not to log file/line information regardless of severity.
81                ///
82                /// Default: false.
83                pub fn log_file_line_info(mut $self, enable: bool) -> Self {
84                    let this = &mut $self$(.$self_arg)*;
85                    this.always_log_file_line = enable;
86                    $self
87                }
88
89                /// When set, a `fuchsia_async::Task` will be spawned and held that will be
90                /// listening for interest changes. This option can only be set if
91                /// `register_global_logger` is set.
92                ///
93                /// Default: true for `PublishOptions`, false for `PublisherOptions`.
94                pub fn listen_for_interest_updates(mut $self, enable: bool) -> Self {
95                    let this = &mut $self$(.$self_arg)*;
96                    this.listen_for_interest_updates = enable;
97                    $self
98                }
99
100                /// Sets the `LogSink` that will be used.
101                ///
102                /// Default: the `fuchsia.logger.LogSink` available in the incoming namespace.
103                pub fn use_log_sink(mut $self, client: ClientEnd<LogSinkMarker>) -> Self {
104                    let this = &mut $self$(.$self_arg)*;
105                    this.log_sink_client = Some(client);
106                    $self
107                }
108
109                /// When set to true, writes to the log socket will be blocking. This is, we'll
110                /// retry every time the socket buffer is full until we are able to write the log.
111                ///
112                /// Default: false
113                pub fn blocking(mut $self, is_blocking: bool) -> Self {
114                    let this = &mut $self$(.$self_arg)*;
115                    this.blocking = is_blocking;
116                    $self
117                }
118
119                /// When set to true, the publisher will be registered as the global logger. This
120                /// can only be done once.
121                ///
122                /// Default: true for `PublishOptions`, false for `PublisherOptions`.
123                pub fn register_global_logger(mut $self, value: bool) -> Self {
124                    let this = &mut $self$(.$self_arg)*;
125                    this.register_global_logger = value;
126                    $self
127                }
128            }
129        )*
130    };
131}
132
133publisher_options!((PublisherOptions, self,), (PublishOptions, self, publisher));
134
135/// Initializes logging with the given options.
136///
137/// IMPORTANT: this should be called at most once in a program, and must be
138/// called only after an async executor has been set for the current thread,
139/// otherwise it'll return errors or panic. Therefore it's recommended to never
140/// call this from libraries and only do it from binaries.
141// Ideally this would be an async function, but fixing that is a bit of a Yak shave.
142pub fn initialize(opts: PublishOptions<'_>) -> Result<(), PublishError> {
143    let result = Publisher::new_sync_with_async_listener(opts.publisher);
144    if matches!(result, Err(PublishError::MissingOnInit)) {
145        // NOTE: We ignore missing OnInit errors as these can happen on products where the log sink
146        // connection isn't routed. If this is a mistake, then there will be warning messages from
147        // Component Manager regarding failed routing.
148        return Ok(());
149    }
150    result?;
151    if opts.install_panic_hook {
152        crate::install_panic_hook(opts.panic_prefix);
153    }
154    Ok(())
155}
156
157/// Sets the global minimum log severity.
158/// IMPORTANT: this function can panic if `initialize` wasn't called before.
159pub fn set_minimum_severity(severity: impl Into<Severity>) {
160    let severity: Severity = severity.into();
161    log::set_max_level(severity.into());
162}
163
164/// Initializes logging with the given options.
165///
166/// This must be used when working in an environment where a [`fuchsia_async::Executor`] can't be
167/// used.
168///
169/// IMPORTANT: this should be called at most once in a program, and must be
170/// called only after an async executor has been set for the current thread,
171/// otherwise it'll return errors or panic. Therefore it's recommended to never
172/// call this from libraries and only do it from binaries.
173pub fn initialize_sync(opts: PublishOptions<'_>) {
174    match Publisher::new_sync(opts.publisher) {
175        Ok(_) => {}
176        Err(PublishError::MissingOnInit) => {
177            // NOTE: We ignore missing OnInit errors as these can happen on products where the log
178            // sink connection isn't routed. If this is a mistake, then there will be warning
179            // messages from Component Manager regarding failed routing.
180            return;
181        }
182        Err(e) => panic!("Unable to initialize logging: {e:?}"),
183    }
184    if opts.install_panic_hook {
185        crate::install_panic_hook(opts.panic_prefix);
186    }
187}
188
189/// A `Publisher` acts as broker, implementing [`log::Log`] to receive log
190/// events from a component, and then forwarding that data on to a diagnostics service.
191#[derive(Clone)]
192pub struct Publisher {
193    inner: Arc<InnerPublisher>,
194}
195
196struct InnerPublisher {
197    sink: IoBufferSink,
198    filter: InterestFilter,
199}
200
201impl Publisher {
202    fn new(opts: PublisherOptions<'_>, iob: zx::Iob) -> Self {
203        Self {
204            inner: Arc::new(InnerPublisher {
205                sink: IoBufferSink::new(
206                    iob,
207                    SinkConfig {
208                        tags: opts.tags.iter().map(|s| s.to_string()).collect(),
209                        metatags: opts.metatags,
210                        always_log_file_line: opts.always_log_file_line,
211                    },
212                ),
213                filter: InterestFilter::new(opts.interest),
214            }),
215        }
216    }
217
218    /// Returns a new `Publisher`. This will connect synchronously and, if configured, run a
219    /// listener in a separate thread.
220    pub fn new_sync(opts: PublisherOptions<'_>) -> Result<Self, PublishError> {
221        let listen_for_interest_updates = opts.listen_for_interest_updates;
222        let (publisher, client) = Self::new_sync_no_listener(opts)?;
223        if listen_for_interest_updates {
224            let publisher = publisher.clone();
225            std::thread::spawn(move || {
226                fuchsia_async::LocalExecutor::new()
227                    .run_singlethreaded(publisher.listen_for_interest_updates(client.into_proxy()));
228            });
229        }
230        Ok(publisher)
231    }
232
233    /// Returns a new `Publisher`. This will connect synchronously and, if configured, run a
234    /// listener in an async task. Prefer to use `new_async`.
235    pub fn new_sync_with_async_listener(opts: PublisherOptions<'_>) -> Result<Self, PublishError> {
236        let listen_for_interest_updates = opts.listen_for_interest_updates;
237        let (publisher, client) = Self::new_sync_no_listener(opts)?;
238        if listen_for_interest_updates {
239            fasync::Task::spawn(publisher.clone().listen_for_interest_updates(client.into_proxy()))
240                .detach();
241        }
242        Ok(publisher)
243    }
244
245    /// Returns a new `Publisher`, but doesn't listen for interest updates. This will connect
246    /// synchronously.
247    fn new_sync_no_listener(
248        mut opts: PublisherOptions<'_>,
249    ) -> Result<(Self, ClientEnd<LogSinkMarker>), PublishError> {
250        let PublisherOptions { listen_for_interest_updates, register_global_logger, .. } = opts;
251
252        if listen_for_interest_updates && !register_global_logger {
253            // We can only support listening for interest updates if we are registering a global
254            // logger. This is because if we don't register, the initial interest is dropped.
255            return Err(PublishError::UnsupportedOption);
256        }
257
258        let client = match opts.log_sink_client.take() {
259            Some(log_sink) => log_sink,
260            None => connect_to_protocol()
261                .map_err(|e| e.to_string())
262                .map_err(PublishError::LogSinkConnect)?,
263        };
264
265        let proxy = zx::Unowned::<LogSinkSynchronousProxy>::new(client.channel());
266        let Ok(LogSinkEvent::OnInit {
267            payload: LogSinkOnInitRequest { buffer: Some(iob), interest, .. },
268        }) = proxy.wait_for_event(zx::MonotonicInstant::INFINITE)
269        else {
270            return Err(PublishError::MissingOnInit);
271        };
272        drop(proxy);
273
274        let publisher = Self::new(opts, iob);
275
276        if register_global_logger {
277            publisher.register_logger(if listen_for_interest_updates { interest } else { None })?;
278        }
279
280        Ok((publisher, client))
281    }
282
283    /// Returns a new `Publisher`. This will connect asynchronously and, if configured, run a
284    /// listener in an async task.
285    pub async fn new_async(mut opts: PublisherOptions<'_>) -> Result<Self, PublishError> {
286        let PublisherOptions { listen_for_interest_updates, register_global_logger, .. } = opts;
287
288        if listen_for_interest_updates && !register_global_logger {
289            // We can only support listening for interest updates if we are registering a global
290            // logger. This is because if we don't register, the initial interest is dropped.
291            return Err(PublishError::UnsupportedOption);
292        }
293
294        let proxy = match opts.log_sink_client.take() {
295            Some(log_sink) => log_sink.into_proxy(),
296            None => connect_to_protocol()
297                .map_err(|e| e.to_string())
298                .map_err(PublishError::LogSinkConnect)?,
299        };
300
301        let Some(Ok(LogSinkEvent::OnInit {
302            payload: LogSinkOnInitRequest { buffer: Some(iob), interest, .. },
303        })) = proxy.take_event_stream().next().await
304        else {
305            return Err(PublishError::MissingOnInit);
306        };
307
308        let publisher = Self::new(opts, iob);
309
310        if register_global_logger {
311            publisher.register_logger(if listen_for_interest_updates { interest } else { None })?;
312            fasync::Task::spawn(publisher.clone().listen_for_interest_updates(proxy)).detach();
313        }
314
315        Ok(publisher)
316    }
317
318    /// Publish the provided event for testing.
319    pub fn event_for_testing(&self, record: TestRecord<'_>) {
320        if self.inner.filter.enabled_for_testing(&record) {
321            self.inner.sink.event_for_testing(record);
322        }
323    }
324
325    /// Registers an interest listener
326    pub fn set_interest_listener<T>(&self, listener: T)
327    where
328        T: OnInterestChanged + Send + Sync + 'static,
329    {
330        self.inner.filter.set_interest_listener(listener);
331    }
332
333    /// Sets the global logger to this publisher. This function may only be called once in the
334    /// lifetime of a program.
335    pub fn register_logger(&self, interest: Option<Interest>) -> Result<(), PublishError> {
336        self.inner.filter.update_interest(interest.unwrap_or_default());
337        // SAFETY: This leaks which guarantees the publisher remains alive for the lifetime of the
338        // program.
339        unsafe {
340            let ptr = Arc::into_raw(self.inner.clone());
341            log::set_logger(&*ptr).inspect_err(|_| {
342                let _ = Arc::from_raw(ptr);
343            })?;
344        }
345        Ok(())
346    }
347
348    /// Listens for interest updates. Callers must maintain a clone to keep the publisher alive;
349    /// this function will downgrade to a weak reference.
350    async fn listen_for_interest_updates(self, proxy: LogSinkProxy) {
351        self.inner.filter.listen_for_interest_updates(proxy).await;
352    }
353}
354
355impl log::Log for InnerPublisher {
356    fn enabled(&self, _metadata: &log::Metadata<'_>) -> bool {
357        // NOTE: we handle minimum severity directly through the log max_level. So we call,
358        // log::set_max_level, log::max_level where appropriate.
359        true
360    }
361
362    fn log(&self, record: &log::Record<'_>) {
363        self.sink.record_log(record);
364    }
365
366    fn flush(&self) {}
367}
368
369impl log::Log for Publisher {
370    #[inline]
371    fn enabled(&self, metadata: &log::Metadata<'_>) -> bool {
372        self.inner.enabled(metadata)
373    }
374
375    #[inline]
376    fn log(&self, record: &log::Record<'_>) {
377        self.inner.log(record)
378    }
379
380    #[inline]
381    fn flush(&self) {
382        self.inner.flush()
383    }
384}
385
386impl Borrow<InterestFilter> for InnerPublisher {
387    fn borrow(&self) -> &InterestFilter {
388        &self.filter
389    }
390}
391
392/// Initializes logging, but buffers logs until the connection is established. This is required for
393/// things like Component Manager, which would otherwise deadlock when starting. This carries some
394/// overhead, so should be avoided unless required.
395pub fn initialize_buffered(opts: PublishOptions<'_>) -> Result<(), PublishError> {
396    BufferedPublisher::new(opts.publisher)?;
397    if opts.install_panic_hook {
398        crate::install_panic_hook(opts.panic_prefix);
399    }
400    Ok(())
401}
402
403/// A buffered publisher will buffer log messages until the IOBuffer is received. If this is
404/// registered as the global logger, then messages will be logged at the default level until an
405/// updated level is received from Archivist.
406pub struct BufferedPublisher {
407    sink: BufferedSink,
408    filter: InterestFilter,
409    interest_listening_task: Mutex<Option<fasync::Task<()>>>,
410}
411
412impl BufferedPublisher {
413    /// Returns a publisher that will buffer messages until the IOBuffer is received. An async
414    /// executor must be established.
415    pub fn new(opts: PublisherOptions<'_>) -> Result<Arc<Self>, PublishError> {
416        if opts.listen_for_interest_updates && !opts.register_global_logger {
417            // We can only support listening for interest updates if we are registering a global
418            // logger. This is because if we don't register, the initial interest is dropped.
419            return Err(PublishError::UnsupportedOption);
420        }
421
422        let client = match opts.log_sink_client {
423            Some(log_sink) => log_sink,
424            None => connect_to_protocol()
425                .map_err(|e| e.to_string())
426                .map_err(PublishError::LogSinkConnect)?,
427        };
428
429        let this = Arc::new(Self {
430            sink: BufferedSink::new(SinkConfig {
431                tags: opts.tags.iter().map(|s| s.to_string()).collect(),
432                metatags: opts.metatags,
433                always_log_file_line: opts.always_log_file_line,
434            }),
435            filter: InterestFilter::new(opts.interest),
436            interest_listening_task: Mutex::default(),
437        });
438
439        if opts.register_global_logger {
440            // SAFETY: This leaks which guarantees the publisher remains alive for the lifetime
441            // of the program. This leaks even when there is an error (which shouldn't happen so
442            // we don't worry about it).
443            unsafe {
444                log::set_logger(&*Arc::into_raw(this.clone()))?;
445            }
446        }
447
448        // Whilst we are waiting for the OnInit event, we hold a strong reference to the publisher
449        // which will prevent the publisher from being dropped and ensure that buffered log messages
450        // are sent.
451        let this_clone = this.clone();
452        *this_clone.interest_listening_task.lock().unwrap() =
453            Some(fasync::Task::spawn(async move {
454                let proxy = client.into_proxy();
455
456                let Some(Ok(LogSinkEvent::OnInit {
457                    payload: LogSinkOnInitRequest { buffer: Some(buffer), interest, .. },
458                })) = proxy.take_event_stream().next().await
459                else {
460                    // There's not a lot we can do here: we haven't received the event we expected
461                    // and there's no way we can log the issue.
462                    return;
463                };
464
465                // Ignore the interest sent in the OnInit request if `listen_for_interest_updates`
466                // is false; it is assumed that the caller wants the interest specified in the
467                // options to stick.
468                this.filter.update_interest(
469                    (if opts.listen_for_interest_updates { interest } else { None })
470                        .unwrap_or_default(),
471                );
472
473                this.sink.set_buffer(buffer);
474
475                if opts.listen_for_interest_updates {
476                    this.filter.listen_for_interest_updates(proxy).await;
477                }
478            }));
479
480        Ok(this_clone)
481    }
482}
483
484impl log::Log for BufferedPublisher {
485    fn enabled(&self, _metadata: &log::Metadata<'_>) -> bool {
486        // NOTE: we handle minimum severity directly through the log max_level. So we call,
487        // log::set_max_level, log::max_level where appropriate.
488        true
489    }
490
491    fn log(&self, record: &log::Record<'_>) {
492        self.sink.record_log(record);
493    }
494
495    fn flush(&self) {}
496}
497
498impl Borrow<InterestFilter> for BufferedPublisher {
499    fn borrow(&self) -> &InterestFilter {
500        &self.filter
501    }
502}
503
504/// Errors arising while forwarding a diagnostics stream to the environment.
505#[derive(Debug, Error)]
506pub enum PublishError {
507    /// Connection to fuchsia.logger.LogSink failed.
508    #[error("failed to connect to fuchsia.logger.LogSink ({0})")]
509    LogSinkConnect(String),
510
511    /// Couldn't create a new socket.
512    #[error("failed to create a socket for logging")]
513    MakeSocket(#[source] zx::Status),
514
515    /// An issue with the LogSink channel or socket prevented us from sending it to the `LogSink`.
516    #[error("failed to send a socket to the LogSink")]
517    SendSocket(#[source] fidl::Error),
518
519    /// Installing a Logger.
520    #[error("failed to install the loger")]
521    InitLogForward(#[from] log::SetLoggerError),
522
523    /// Unsupported publish option.
524    #[error("unsupported option")]
525    UnsupportedOption,
526
527    /// The channel was closed with no OnInit event.
528    #[error("did not receive the OnInit event")]
529    MissingOnInit,
530}
531
532#[cfg(test)]
533static CURRENT_TIME_NANOS: AtomicI64 = AtomicI64::new(Duration::from_secs(10).as_nanos() as i64);
534
535/// Increments the test clock.
536#[cfg(test)]
537pub fn increment_clock(duration: Duration) {
538    CURRENT_TIME_NANOS.fetch_add(duration.as_nanos() as i64, Ordering::SeqCst);
539}
540
541/// Gets the current monotonic time in nanoseconds.
542#[doc(hidden)]
543pub fn get_now() -> i64 {
544    #[cfg(not(test))]
545    return zx::MonotonicInstant::get().into_nanos();
546
547    #[cfg(test)]
548    CURRENT_TIME_NANOS.load(Ordering::Relaxed)
549}
550
551/// Logs every N seconds using an Atomic variable
552/// to keep track of the time. This will have a higher
553/// performance impact on ARM compared to regular logging due to the use
554/// of an atomic.
555#[macro_export]
556macro_rules! log_every_n_seconds {
557    ($seconds:expr, $severity:expr, $($arg:tt)*) => {
558        use std::{time::Duration, sync::atomic::{Ordering, AtomicI64}};
559        use $crate::{paste, fuchsia::get_now};
560
561        let now = get_now();
562
563        static LAST_LOG_TIMESTAMP: AtomicI64 = AtomicI64::new(0);
564        if now - LAST_LOG_TIMESTAMP.load(Ordering::Acquire) >= Duration::from_secs($seconds).as_nanos() as i64 {
565            paste! {
566                log::[< $severity:lower >]!($($arg)*);
567            }
568            LAST_LOG_TIMESTAMP.store(now, Ordering::Release);
569        }
570    }
571}
572
573#[cfg(test)]
574mod tests {
575    use super::*;
576    use diagnostics_reader::ArchiveReader;
577    use fidl_fuchsia_diagnostics_crasher::{CrasherMarker, CrasherProxy};
578    use fuchsia_component_test::{Capability, ChildOptions, RealmBuilder, Ref, Route};
579    use futures::{StreamExt, future};
580    use log::{debug, info};
581    use moniker::ExtendedMoniker;
582
583    #[fuchsia::test]
584    async fn panic_integration_test() {
585        let builder = RealmBuilder::new().await.unwrap();
586        let puppet = builder
587            .add_child("rust-crasher", "#meta/crasher.cm", ChildOptions::new())
588            .await
589            .unwrap();
590        builder
591            .add_route(
592                Route::new()
593                    .capability(Capability::protocol::<CrasherMarker>())
594                    .from(&puppet)
595                    .to(Ref::parent()),
596            )
597            .await
598            .unwrap();
599        let realm = builder.build().await.unwrap();
600        let child_name = realm.root.child_name();
601        let reader = ArchiveReader::logs();
602        let (logs, _) = reader.snapshot_then_subscribe().unwrap().split_streams();
603        let proxy: CrasherProxy = realm.root.connect_to_protocol_at_exposed_dir().unwrap();
604        let target_moniker =
605            ExtendedMoniker::parse_str(&format!("realm_builder:{}/rust-crasher", child_name))
606                .unwrap();
607        proxy.crash("This is a test panic.").await.unwrap();
608
609        let result =
610            logs.filter(|data| future::ready(target_moniker == data.moniker)).next().await.unwrap();
611        assert_eq!(result.line_number(), Some(29).as_ref());
612        assert_eq!(
613            result.file_path(),
614            Some("src/lib/diagnostics/log/rust/rust-crasher/src/main.rs")
615        );
616        assert!(
617            result
618                .payload_keys()
619                .unwrap()
620                .get_property("info")
621                .unwrap()
622                .to_string()
623                .contains("This is a test panic.")
624        );
625    }
626
627    #[fuchsia::test(logging = false)]
628    async fn verify_setting_minimum_log_severity() {
629        let reader = ArchiveReader::logs();
630        let (logs, _) = reader.snapshot_then_subscribe().unwrap().split_streams();
631        let _publisher = Publisher::new_async(PublisherOptions {
632            tags: &["verify_setting_minimum_log_severity"],
633            register_global_logger: true,
634            ..PublisherOptions::default()
635        })
636        .await
637        .expect("initialized log");
638
639        info!("I'm an info log");
640        debug!("I'm a debug log and won't show up");
641
642        set_minimum_severity(Severity::Debug);
643        debug!("I'm a debug log and I show up");
644
645        let results = logs
646            .filter(|data| {
647                future::ready(
648                    data.tags().unwrap().iter().any(|t| t == "verify_setting_minimum_log_severity"),
649                )
650            })
651            .take(2)
652            .collect::<Vec<_>>()
653            .await;
654        assert_eq!(results[0].msg().unwrap(), "I'm an info log");
655        assert_eq!(results[1].msg().unwrap(), "I'm a debug log and I show up");
656    }
657
658    #[fuchsia::test]
659    async fn log_macro_logs_are_recorded() {
660        let reader = ArchiveReader::logs();
661        let (logs, _) = reader.snapshot_then_subscribe().unwrap().split_streams();
662
663        let total_threads = 10;
664
665        for i in 0..total_threads {
666            std::thread::spawn(move || {
667                log::info!(thread=i; "log from thread {}", i);
668            });
669        }
670
671        let mut results = logs
672            .filter(|data| {
673                future::ready(
674                    data.tags().unwrap().iter().any(|t| t == "log_macro_logs_are_recorded"),
675                )
676            })
677            .take(total_threads);
678
679        let mut seen = vec![];
680        while let Some(log) = results.next().await {
681            let hierarchy = log.payload_keys().unwrap();
682            assert_eq!(hierarchy.properties.len(), 1);
683            assert_eq!(hierarchy.properties[0].name(), "thread");
684            let thread_id = hierarchy.properties[0].uint().unwrap();
685            seen.push(thread_id as usize);
686            assert_eq!(log.msg().unwrap(), format!("log from thread {thread_id}"));
687        }
688        seen.sort();
689        assert_eq!(seen, (0..total_threads).collect::<Vec<_>>());
690    }
691}
diagnostics_log/fuchsia/mod.rs

diagnostics_log/fuchsia/
mod.rs
