1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
use std::any::TypeId;
use std::borrow::Cow;
use std::fmt;
use std::panic::RefUnwindSafe;
use std::sync::Arc;
use std::sync::RwLock;
use std::time::Duration;

use rand::random;
use sentry_types::protocol::v7::SessionUpdate;

use crate::constants::SDK_INFO;
use crate::protocol::{ClientSdkInfo, Event};
use crate::session::SessionFlusher;
use crate::types::{Dsn, Uuid};
use crate::{ClientOptions, Envelope, Hub, Integration, Scope, SessionMode, Transport};

impl<T: Into<ClientOptions>> From<T> for Client {
    fn from(o: T) -> Client {
        Client::with_options(o.into())
    }
}

pub(crate) type TransportArc = Arc<RwLock<Option<Arc<dyn Transport>>>>;

/// The Sentry Client.
///
/// The Client is responsible for event processing and sending events to the
/// sentry server via the configured [`Transport`]. It can be created from a
/// [`ClientOptions`].
///
/// See the [Unified API] document for more details.
///
/// # Examples
///
/// ```
/// sentry::Client::from(sentry::ClientOptions::default());
/// ```
///
/// [`ClientOptions`]: struct.ClientOptions.html
/// [`Transport`]: trait.Transport.html
/// [Unified API]: https://develop.sentry.dev/sdk/unified-api/
pub struct Client {
    options: ClientOptions,
    transport: TransportArc,
    session_flusher: RwLock<Option<SessionFlusher>>,
    integrations: Vec<(TypeId, Arc<dyn Integration>)>,
    pub(crate) sdk_info: ClientSdkInfo,
}

impl fmt::Debug for Client {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        f.debug_struct("Client")
            .field("dsn", &self.dsn())
            .field("options", &self.options)
            .finish()
    }
}

impl Clone for Client {
    fn clone(&self) -> Client {
        let transport = Arc::new(RwLock::new(self.transport.read().unwrap().clone()));
        let session_flusher = RwLock::new(Some(SessionFlusher::new(
            transport.clone(),
            self.options.session_mode,
        )));
        Client {
            options: self.options.clone(),
            transport,
            session_flusher,
            integrations: self.integrations.clone(),
            sdk_info: self.sdk_info.clone(),
        }
    }
}

impl Client {
    /// Creates a new Sentry client from a config.
    ///
    /// # Supported Configs
    ///
    /// The following common values are supported for the client config:
    ///
    /// * `ClientOptions`: configure the client with the given client options.
    /// * `()` or empty string: Disable the client.
    /// * `&str` / `String` / `&OsStr` / `String`: configure the client with the given DSN.
    /// * `Dsn` / `&Dsn`: configure the client with a given DSN.
    /// * `(Dsn, ClientOptions)`: configure the client from the given DSN and optional options.
    ///
    /// The `Default` implementation of `ClientOptions` pulls in the DSN from the
    /// `SENTRY_DSN` environment variable.
    ///
    /// # Panics
    ///
    /// The `Into<ClientOptions>` implementations can panic for the forms where a DSN needs to be
    /// parsed.  If you want to handle invalid DSNs you need to parse them manually by calling
    /// parse on it and handle the error.
    pub fn from_config<O: Into<ClientOptions>>(opts: O) -> Client {
        Client::with_options(opts.into())
    }

    /// Creates a new sentry client for the given options.
    ///
    /// If the DSN on the options is set to `None` the client will be entirely
    /// disabled.
    pub fn with_options(mut options: ClientOptions) -> Client {
        // Create the main hub eagerly to avoid problems with the background thread
        // See https://github.com/getsentry/sentry-rust/issues/237
        Hub::with(|_| {});

        let create_transport = || {
            options.dsn.as_ref()?;
            let factory = options.transport.as_ref()?;
            Some(factory.create_transport(&options))
        };

        let transport = Arc::new(RwLock::new(create_transport()));

        let mut sdk_info = SDK_INFO.clone();

        // NOTE: We do not filter out duplicate integrations based on their
        // TypeId.
        let integrations: Vec<_> = options
            .integrations
            .iter()
            .map(|integration| (integration.as_ref().type_id(), integration.clone()))
            .collect();

        for (_, integration) in integrations.iter() {
            integration.setup(&mut options);
            sdk_info.integrations.push(integration.name().to_string());
        }

        let session_flusher = RwLock::new(Some(SessionFlusher::new(
            transport.clone(),
            options.session_mode,
        )));
        Client {
            options,
            transport,
            session_flusher,
            integrations,
            sdk_info,
        }
    }

    pub(crate) fn get_integration<I>(&self) -> Option<&I>
    where
        I: Integration,
    {
        let id = TypeId::of::<I>();
        let integration = &self.integrations.iter().find(|(iid, _)| *iid == id)?.1;
        integration.as_ref().as_any().downcast_ref()
    }

    fn prepare_event(
        &self,
        mut event: Event<'static>,
        scope: Option<&Scope>,
    ) -> Option<Event<'static>> {
        // event_id and sdk_info are set before the processors run so that the
        // processors can poke around in that data.
        if event.event_id.is_nil() {
            event.event_id = Uuid::new_v4();
        }

        if event.sdk.is_none() {
            // NOTE: we need to clone here because `Event` must be `'static`
            event.sdk = Some(Cow::Owned(self.sdk_info.clone()));
        }

        if let Some(scope) = scope {
            event = match scope.apply_to_event(event) {
                Some(event) => event,
                None => return None,
            };
        }

        for (_, integration) in self.integrations.iter() {
            let id = event.event_id;
            event = match integration.process_event(event, &self.options) {
                Some(event) => event,
                None => {
                    sentry_debug!("integration dropped event {:?}", id);
                    return None;
                }
            }
        }

        if event.release.is_none() {
            event.release = self.options.release.clone();
        }
        if event.environment.is_none() {
            event.environment = self.options.environment.clone();
        }
        if event.server_name.is_none() {
            event.server_name = self.options.server_name.clone();
        }
        if &event.platform == "other" {
            event.platform = "native".into();
        }

        if let Some(ref func) = self.options.before_send {
            sentry_debug!("invoking before_send callback");
            let id = event.event_id;
            if let Some(processed_event) = func(event) {
                event = processed_event;
            } else {
                sentry_debug!("before_send dropped event {:?}", id);
                return None;
            }
        }

        if let Some(scope) = scope {
            scope.update_session_from_event(&event);
        }

        if !self.sample_should_send(self.options.sample_rate) {
            None
        } else {
            Some(event)
        }
    }

    /// Returns the options of this client.
    pub fn options(&self) -> &ClientOptions {
        &self.options
    }

    /// Returns the DSN that constructed this client.
    pub fn dsn(&self) -> Option<&Dsn> {
        self.options.dsn.as_ref()
    }

    /// Quick check to see if the client is enabled.
    ///
    /// The Client is enabled if it has a valid DSN and Transport configured.
    ///
    /// # Examples
    ///
    /// ```
    /// use std::sync::Arc;
    ///
    /// let client = sentry::Client::from(sentry::ClientOptions::default());
    /// assert!(!client.is_enabled());
    ///
    /// let dsn = "https://public@example.com/1";
    /// let transport = sentry::test::TestTransport::new();
    /// let client = sentry::Client::from((
    ///     dsn,
    ///     sentry::ClientOptions {
    ///         transport: Some(Arc::new(transport)),
    ///         ..Default::default()
    ///     },
    /// ));
    /// assert!(client.is_enabled());
    /// ```
    pub fn is_enabled(&self) -> bool {
        self.options.dsn.is_some() && self.transport.read().unwrap().is_some()
    }

    /// Captures an event and sends it to sentry.
    pub fn capture_event(&self, event: Event<'static>, scope: Option<&Scope>) -> Uuid {
        if let Some(ref transport) = *self.transport.read().unwrap() {
            if let Some(event) = self.prepare_event(event, scope) {
                let event_id = event.event_id;
                let mut envelope: Envelope = event.into();
                // For request-mode sessions, we aggregate them all instead of
                // flushing them out early.
                if self.options.session_mode == SessionMode::Application {
                    let session_item = scope.and_then(|scope| {
                        scope
                            .session
                            .lock()
                            .unwrap()
                            .as_mut()
                            .and_then(|session| session.create_envelope_item())
                    });
                    if let Some(session_item) = session_item {
                        envelope.add_item(session_item);
                    }
                }

                if let Some(scope) = scope {
                    for attachment in scope.attachments.iter().cloned() {
                        envelope.add_item(attachment);
                    }
                }

                transport.send_envelope(envelope);
                return event_id;
            }
        }
        Default::default()
    }

    /// Sends the specified [`Envelope`] to sentry.
    pub fn send_envelope(&self, envelope: Envelope) {
        if let Some(ref transport) = *self.transport.read().unwrap() {
            transport.send_envelope(envelope);
        }
    }

    pub(crate) fn enqueue_session(&self, session_update: SessionUpdate<'static>) {
        if let Some(ref flusher) = *self.session_flusher.read().unwrap() {
            flusher.enqueue(session_update);
        }
    }

    /// Drains all pending events without shutting down.
    pub fn flush(&self, timeout: Option<Duration>) -> bool {
        if let Some(ref flusher) = *self.session_flusher.read().unwrap() {
            flusher.flush();
        }
        if let Some(ref transport) = *self.transport.read().unwrap() {
            transport.flush(timeout.unwrap_or(self.options.shutdown_timeout))
        } else {
            true
        }
    }

    /// Drains all pending events and shuts down the transport behind the
    /// client.  After shutting down the transport is removed.
    ///
    /// This returns `true` if the queue was successfully drained in the
    /// given time or `false` if not (for instance because of a timeout).
    /// If no timeout is provided the client will wait for as long a
    /// `shutdown_timeout` in the client options.
    pub fn close(&self, timeout: Option<Duration>) -> bool {
        drop(self.session_flusher.write().unwrap().take());
        let transport_opt = self.transport.write().unwrap().take();
        if let Some(transport) = transport_opt {
            sentry_debug!("client close; request transport to shut down");
            transport.shutdown(timeout.unwrap_or(self.options.shutdown_timeout))
        } else {
            sentry_debug!("client close; no transport to shut down");
            true
        }
    }

    /// Returns a random boolean with a probability defined
    /// by rate
    pub fn sample_should_send(&self, rate: f32) -> bool {
        if rate >= 1.0 {
            true
        } else {
            random::<f32>() <= rate
        }
    }
}

// Make this unwind safe. It's not out of the box because of the
// `BeforeCallback`s inside `ClientOptions`, and the contained Integrations
impl RefUnwindSafe for Client {}