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

use std::fmt;

use crate::sinks::{prelude::*, util::partitioner::KeyPartitioner};

pub struct GcsSink<Svc, RB> {
    service: Svc,
    request_builder: RB,
    partitioner: KeyPartitioner,
    batcher_settings: BatcherSettings,
    protocol: &'static str,
}

impl<Svc, RB> GcsSink<Svc, RB> {
    pub const fn new(
        service: Svc,
        request_builder: RB,
        partitioner: KeyPartitioner,
        batcher_settings: BatcherSettings,
        protocol: &'static str,
    ) -> Self {
        Self {
            service,
            request_builder,
            partitioner,
            batcher_settings,
            protocol,
        }
    }
}

impl<Svc, RB> GcsSink<Svc, RB>
where
    Svc: Service<RB::Request> + Send + 'static,
    Svc::Future: Send + 'static,
    Svc::Response: DriverResponse + Send + 'static,
    Svc::Error: fmt::Debug + Into<crate::Error> + Send,
    RB: RequestBuilder<(String, Vec<Event>)> + Send + Sync + 'static,
    RB::Error: fmt::Display + Send,
    RB::Request: Finalizable + MetaDescriptive + Send,
{
    async fn run_inner(self: Box<Self>, input: BoxStream<'_, Event>) -> Result<(), ()> {
        let partitioner = self.partitioner;
        let settings = self.batcher_settings;

        let request_builder = self.request_builder;

        input
            .batched_partitioned(partitioner, || settings.as_byte_size_config())
            .filter_map(|(key, batch)| async move {
                // A `TemplateRenderingError` will have been emitted by `KeyPartitioner` if the key here is `None`,
                // thus no further `EventsDropped` event needs emitting at this stage.
                key.map(move |k| (k, batch))
            })
            .request_builder(default_request_builder_concurrency_limit(), request_builder)
            .filter_map(|request| async move {
                match request {
                    Err(error) => {
                        emit!(SinkRequestBuildError { error });
                        None
                    }
                    Ok(req) => Some(req),
                }
            })
            .into_driver(self.service)
            .protocol(self.protocol)
            .run()
            .await
    }
}

#[async_trait]
impl<Svc, RB> StreamSink<Event> for GcsSink<Svc, RB>
where
    Svc: Service<RB::Request> + Send + 'static,
    Svc::Future: Send + 'static,
    Svc::Response: DriverResponse + Send + 'static,
    Svc::Error: fmt::Debug + Into<crate::Error> + Send,
    RB: RequestBuilder<(String, Vec<Event>)> + Send + Sync + 'static,
    RB::Error: fmt::Display + Send,
    RB::Request: Finalizable + MetaDescriptive + Send,
{
    async fn run(mut self: Box<Self>, input: BoxStream<'_, Event>) -> Result<(), ()> {
        self.run_inner(input).await
    }
}