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
use crate::utils::error_notes::ErrorNotes;
use anyhow::Result;
use diem_crypto::HashValue;
use diem_types::transaction::Version;
use diemdb::backup::backup_handler::DbState;
use futures::TryStreamExt;
use structopt::StructOpt;
use tokio::io::{AsyncRead, AsyncReadExt};
use tokio_util::compat::FuturesAsyncReadCompatExt;
#[derive(StructOpt)]
pub struct BackupServiceClientOpt {
#[structopt(
long = "backup-service-address",
default_value = "http://localhost:6186",
help = "Backup service address."
)]
pub address: String,
}
pub struct BackupServiceClient {
address: String,
client: reqwest::Client,
}
impl BackupServiceClient {
pub fn new_with_opt(opt: BackupServiceClientOpt) -> Self {
Self::new(opt.address)
}
pub fn new(address: String) -> Self {
Self {
address,
client: reqwest::Client::builder()
.no_proxy()
.build()
.expect("Http client should build."),
}
}
async fn get(&self, path: &str) -> Result<impl AsyncRead> {
let url = format!("{}/{}", self.address, path);
Ok(self
.client
.get(&url)
.send()
.await
.err_notes(&url)?
.error_for_status()
.err_notes(&url)?
.bytes_stream()
.map_err(|e| futures::io::Error::new(futures::io::ErrorKind::Other, e))
.into_async_read()
.compat())
}
pub async fn get_db_state(&self) -> Result<Option<DbState>> {
let mut buf = Vec::new();
self.get("db_state").await?.read_to_end(&mut buf).await?;
Ok(bcs::from_bytes(&buf)?)
}
pub async fn get_account_range_proof(
&self,
key: HashValue,
version: Version,
) -> Result<impl AsyncRead> {
self.get(&format!("state_range_proof/{}/{:x}", version, key))
.await
}
pub async fn get_state_snapshot(&self, version: Version) -> Result<impl AsyncRead> {
self.get(&format!("state_snapshot/{}", version)).await
}
pub async fn get_state_root_proof(&self, version: Version) -> Result<Vec<u8>> {
let mut buf = Vec::new();
self.get(&format!("state_root_proof/{}", version))
.await?
.read_to_end(&mut buf)
.await?;
Ok(buf)
}
pub async fn get_epoch_ending_ledger_infos(
&self,
start_epoch: u64,
end_epoch: u64,
) -> Result<impl AsyncRead> {
self.get(&format!(
"epoch_ending_ledger_infos/{}/{}",
start_epoch, end_epoch
))
.await
}
pub async fn get_transactions(
&self,
start_version: Version,
num_transactions: usize,
) -> Result<impl AsyncRead> {
self.get(&format!(
"transactions/{}/{}",
start_version, num_transactions
))
.await
}
pub async fn get_transaction_range_proof(
&self,
first_version: Version,
last_version: Version,
) -> Result<impl AsyncRead> {
self.get(&format!(
"transaction_range_proof/{}/{}",
first_version, last_version,
))
.await
}
}