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
use std::{
future::Future,
pin::Pin,
sync::Arc,
task::{Context, Poll},
time::Duration,
};
use bytes::Bytes;
use futures::{FutureExt, Stream, StreamExt};
use hyper::{
client::{Client, HttpConnector},
Request, Uri,
};
use hyper_tls::HttpsConnector;
use crate::{batch::BatchStream, channel::Message, error::Error};
const DEFAULT_REQUEST_TIMEOUT: u64 = 5;
pub struct LogglyClientBuilder {
token: String,
tag: String,
request_timeout: Duration,
debug: bool,
connector: Option<HttpsConnector<HttpConnector>>,
}
impl LogglyClientBuilder {
fn new(token: &str, tag: &str) -> LogglyClientBuilder {
let request_timeout = Duration::from_secs(DEFAULT_REQUEST_TIMEOUT);
LogglyClientBuilder {
token: token.to_string(),
tag: tag.to_string(),
request_timeout,
debug: false,
connector: None,
}
}
pub fn debug_mode(mut self, enable: bool) -> LogglyClientBuilder {
self.debug = enable;
self
}
pub fn request_timeout(mut self, timeout: Duration) -> LogglyClientBuilder {
self.request_timeout = timeout;
self
}
pub fn connector(mut self, connector: HttpsConnector<HttpConnector>) -> LogglyClientBuilder {
self.connector = Some(connector);
self
}
pub fn build(self) -> Result<LogglyClient, Error> {
let connector;
if let Some(c) = self.connector {
connector = c;
} else {
connector = HttpsConnector::new();
}
let client = Client::builder().build(connector);
let url = format!(
"https://logs-01.loggly.com/bulk/{}/tag/{}/",
self.token, self.tag
);
let url = url
.parse()
.map_err(|_| Error::new("unable to parse Loggly URL"))?;
let url = Arc::new(url);
let res = LogglyClient {
url,
timeout: self.request_timeout,
debug: self.debug,
client,
};
Ok(res)
}
}
#[derive(Clone)]
pub struct LogglyClient {
url: Arc<Uri>,
timeout: Duration,
debug: bool,
client: Client<HttpsConnector<HttpConnector>>,
}
impl LogglyClient {
pub fn builder(token: &str, tag: &str) -> LogglyClientBuilder {
LogglyClientBuilder::new(token, tag)
}
pub async fn batch_send<I>(&self, messages: I)
where
I: IntoIterator<Item = Bytes>,
{
let mut batch = Vec::<u8>::new();
for msg in messages {
batch.extend_from_slice(msg.as_ref());
batch.push(b'\n');
}
self.send(Bytes::from(batch)).await
}
pub async fn send(&self, msg: Bytes) {
loop {
if self.try_send(msg.clone()).await.is_ok() {
return;
}
}
}
pub async fn try_send(&self, msg: Bytes) -> Result<(), Error> {
let send = tokio::time::timeout(self.timeout, self.try_send_inner(msg));
let res = match send.await {
Ok(Ok(())) => Ok(()),
Ok(Err(err)) => Err(err),
Err(_) => Err(Error::new("request timeout")),
};
if self.debug {
if let Err(err) = res.as_ref() {
eprintln!("Loggly request failed: {}", err);
}
}
res
}
async fn try_send_inner(&self, msg: Bytes) -> Result<(), Error> {
let request = Request::post(&*self.url)
.header("Content-Type", "text/plain")
.body(msg.into())
.map_err(|_| Error::new("unable to create a request body"))?;
let res = self
.client
.request(request)
.await
.map_err(|err| Error::new(format!("unable to send a request: {}", err)))?;
let status = res.status();
let body = hyper::body::to_bytes(res.into_body())
.await
.map_err(|err| Error::new(format!("unable to read a response body: {}", err)))?;
if status.is_success() {
Ok(())
} else {
let body = String::from_utf8_lossy(&body);
Err(Error::new(format!(
"server responded with HTTP {}:\n{}",
status, body
)))
}
}
pub fn send_all<S>(
self,
messages: S,
batch_size: usize,
sender_count: usize,
) -> LogglyMessageSender
where
S: Stream<Item = Message<Bytes>> + Send + Unpin + 'static,
{
let sender = messages
.batch_stream(batch_size)
.map(move |messages| {
let mut batch = Vec::new();
let mut dhandles = Vec::new();
for msg in messages.into_iter() {
let (payload, dhandle) = msg.deconstruct();
batch.push(payload);
dhandles.push(dhandle);
}
let client = self.clone();
async move {
client.batch_send(batch).await;
for mut dhandle in dhandles {
dhandle.delete();
}
}
})
.buffer_unordered(sender_count)
.for_each(|_| futures::future::ready(()));
LogglyMessageSender {
inner: Box::pin(sender),
}
}
}
pub struct LogglyMessageSender {
inner: Pin<Box<dyn Future<Output = ()> + Send>>,
}
impl Future for LogglyMessageSender {
type Output = ();
fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
self.inner.poll_unpin(cx)
}
}