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
use crate::deserializer::{ParseError, Parser, RawResponse};
use crate::error::SkyhashError;
use crate::types::FromSkyhashBytes;
use crate::Element;
use crate::Pipeline;
use crate::Query;
use crate::SkyQueryResult;
use crate::SkyResult;
use crate::WriteQueryAsync;
use bytes::{Buf, BytesMut};
use std::io::{Error as IoError, ErrorKind};
use tokio::io::{AsyncReadExt, AsyncWriteExt, BufWriter};
use tokio::net::TcpStream;
const BUF_CAP: usize = 4096;
macro_rules! impl_async_methods {
($ty:ty, $inner:ty) => {
impl $ty {
pub async fn run_query<T: FromSkyhashBytes, Q: AsRef<Query>>(&mut self, query: Q) -> SkyResult<T> {
self.run_query_raw(query).await?.try_element_into()
}
pub async fn run_query_raw<Q: AsRef<Query>>(&mut self, query: Q) -> SkyResult<Element> {
match self._run_query(query.as_ref()).await? {
RawResponse::SimpleQuery(sq) => Ok(sq),
RawResponse::PipelinedQuery(_) => Err(SkyhashError::InvalidResponse.into()),
}
}
#[deprecated(
since = "0.7.0",
note = "this will be removed in a future release. consider using `run_query_raw` instead")
]
pub async fn run_simple_query(&mut self, query: &Query) -> SkyQueryResult {
self.run_query_raw(query).await
}
pub async fn run_pipeline(&mut self, pipeline: Pipeline) -> SkyResult<Vec<Element>> {
match self._run_query(&pipeline).await? {
RawResponse::PipelinedQuery(pq) => Ok(pq),
RawResponse::SimpleQuery(_) => Err(SkyhashError::InvalidResponse.into()),
}
}
async fn _run_query<Q: WriteQueryAsync<$inner>>(
&mut self,
query: &Q,
) -> SkyResult<RawResponse> {
query.write_async(&mut self.stream).await?;
self.stream.flush().await?;
loop {
if 0usize == self.stream.read_buf(&mut self.buffer).await? {
return Err(IoError::from(ErrorKind::ConnectionReset).into());
}
match self.try_response() {
Ok((query, forward_by)) => {
self.buffer.advance(forward_by);
return Ok(query);
}
Err(e) => match e {
ParseError::NotEnough => (),
ParseError::BadPacket | ParseError::UnexpectedByte => {
self.buffer.clear();
return Err(SkyhashError::InvalidResponse.into());
}
ParseError::DataTypeError => {
return Err(SkyhashError::ParseError.into())
}
ParseError::Empty => {
return Err(IoError::from(ErrorKind::ConnectionReset).into())
}
ParseError::UnknownDatatype => {
return Err(SkyhashError::UnknownDataType.into())
}
},
}
}
}
fn try_response(&mut self) -> Result<(RawResponse, usize), ParseError> {
if self.buffer.is_empty() {
return Err(ParseError::Empty);
}
Parser::new(&self.buffer).parse()
}
}
impl crate::actions::AsyncSocket for $ty {
fn run(&mut self, q: Query) -> crate::AsyncResult<SkyQueryResult> {
Box::pin(async move { self.run_query_raw(&q).await })
}
}
};
}
cfg_async!(
pub struct Connection {
stream: BufWriter<TcpStream>,
buffer: BytesMut,
}
impl Connection {
pub async fn new(host: &str, port: u16) -> SkyResult<Self> {
let stream = TcpStream::connect((host, port)).await?;
Ok(Connection {
stream: BufWriter::new(stream),
buffer: BytesMut::with_capacity(BUF_CAP),
})
}
}
impl_async_methods!(Connection, BufWriter<TcpStream>);
);
cfg_async_ssl_any!(
use tokio_openssl::SslStream;
use openssl::ssl::{SslContext, SslMethod, Ssl};
use core::pin::Pin;
use crate::error::Error;
pub struct TlsConnection {
stream: SslStream<TcpStream>,
buffer: BytesMut
}
impl TlsConnection {
pub async fn new(host: &str, port: u16, sslcert: &str) -> Result<Self, Error> {
let mut ctx = SslContext::builder(SslMethod::tls_client())?;
ctx.set_ca_file(sslcert)?;
let ssl = Ssl::new(&ctx.build())?;
let stream = TcpStream::connect((host, port)).await?;
let mut stream = SslStream::new(ssl, stream)?;
Pin::new(&mut stream).connect().await?;
Ok(Self {
stream,
buffer: BytesMut::with_capacity(BUF_CAP),
})
}
}
impl_async_methods!(TlsConnection, SslStream<TcpStream>);
);