archivist_lib/logs/servers/
log_settings.rs

1// Copyright 2022 The Fuchsia Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5use crate::logs::error::LogsError;
6use crate::logs::repository::{LogsRepository, STATIC_CONNECTION_ID};
7use fidl::endpoints::{ControlHandle, DiscoverableProtocolMarker};
8use futures::StreamExt;
9use log::warn;
10use std::sync::Arc;
11use {fidl_fuchsia_diagnostics as fdiagnostics, fuchsia_async as fasync};
12
13pub struct LogSettingsServer {
14    /// The repository holding the logs.
15    logs_repo: Arc<LogsRepository>,
16
17    /// Scope holding all of the server Tasks.
18    scope: fasync::Scope,
19}
20
21impl LogSettingsServer {
22    pub fn new(logs_repo: Arc<LogsRepository>, scope: fasync::Scope) -> Self {
23        Self { logs_repo, scope }
24    }
25
26    /// Spawn a task to handle requests from components reading the shared log.
27    pub fn spawn(&self, stream: fdiagnostics::LogSettingsRequestStream) {
28        let logs_repo = Arc::clone(&self.logs_repo);
29        self.scope.spawn(async move {
30            if let Err(e) = Self::handle_requests(logs_repo, stream).await {
31                warn!("error handling Log requests: {}", e);
32            }
33        });
34    }
35
36    pub async fn handle_requests(
37        logs_repo: Arc<LogsRepository>,
38        mut stream: fdiagnostics::LogSettingsRequestStream,
39    ) -> Result<(), LogsError> {
40        let connection_id = logs_repo.new_interest_connection();
41        while let Some(request) = stream.next().await {
42            let request = request.map_err(|source| LogsError::HandlingRequests {
43                protocol: fdiagnostics::LogSettingsMarker::PROTOCOL_NAME,
44                source,
45            })?;
46            match request {
47                fdiagnostics::LogSettingsRequest::RegisterInterest { control_handle, .. } => {
48                    warn!("fuchsia.diagnostics/LogSettings.RegisterInterest is not supported; closing the channel");
49                    control_handle.shutdown();
50                }
51                fdiagnostics::LogSettingsRequest::SetInterest { selectors, responder } => {
52                    logs_repo.update_logs_interest(connection_id, selectors);
53                    responder.send().ok();
54                }
55                fidl_fuchsia_diagnostics::LogSettingsRequest::SetComponentInterest {
56                    payload,
57                    responder,
58                } => {
59                    if let Some(selectors) = payload.selectors {
60                        let connection_id = if payload.persist.unwrap_or(false) {
61                            STATIC_CONNECTION_ID
62                        } else {
63                            connection_id
64                        };
65                        logs_repo.update_logs_interest(connection_id, selectors);
66                    }
67                    responder.send().ok();
68                }
69            }
70        }
71        logs_repo.finish_interest_connection(connection_id);
72
73        Ok(())
74    }
75}
archivist_lib/logs/servers/log_settings.rs

archivist_lib/logs/servers/
log_settings.rs
