bendsql 0.25.2

Databend Native Command Line Tool
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

// Copyright 2021 Datafuse Labs
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

use std::collections::BTreeMap;

use anyhow::{anyhow, Result};
use databend_client::SensitiveString;
use percent_encoding::{percent_decode_str, utf8_percent_encode, NON_ALPHANUMERIC};

#[derive(Debug, Clone, PartialEq, Default)]
pub struct ConnectionArgs {
    pub host: String,
    pub port: Option<u16>,
    pub user: String,
    pub password: SensitiveString,
    pub database: Option<String>,
    pub flight: bool,
    pub args: BTreeMap<String, String>,
}

impl ConnectionArgs {
    pub fn get_dsn(self) -> Result<String> {
        let mut dsn = url::Url::parse("databend://")?;
        dsn.set_host(Some(&self.host))?;
        _ = dsn.set_port(self.port);
        _ = dsn.set_username(&self.user);
        let password = utf8_percent_encode(self.password.inner(), NON_ALPHANUMERIC).to_string();
        _ = dsn.set_password(Some(&password));
        if let Some(database) = self.database {
            dsn.set_path(&database);
        }
        if self.flight {
            _ = dsn.set_scheme("databend+flight");
        }
        let mut query = url::form_urlencoded::Serializer::new(String::new());
        if !self.args.is_empty() {
            for (k, v) in self.args {
                query.append_pair(&k, &v);
            }
        }
        dsn.set_query(Some(&query.finish()));
        Ok(dsn.to_string())
    }

    pub fn from_dsn(dsn: &str) -> Result<Self> {
        let u = url::Url::parse(dsn)?;
        let mut args = BTreeMap::new();
        if let Some(query) = u.query() {
            for (k, v) in url::form_urlencoded::parse(query.as_bytes()) {
                args.insert(k.to_string(), v.to_string());
            }
        }
        let flight = matches!(u.scheme(), "databend+flight");
        let host = u.host_str().ok_or(anyhow!("missing host"))?.to_string();
        let port = u.port();
        let user = u.username().to_string();
        let password = u.password().unwrap_or_default();
        let password = percent_decode_str(password).decode_utf8()?.to_string();
        let password = SensitiveString::from(password);
        let database = u.path().strip_prefix('/').map(|s| s.to_string());
        Ok(Self {
            host,
            port,
            user,
            password,
            database,
            flight,
            args,
        })
    }
}

#[cfg(test)]
mod test {
    use super::*;

    #[test]
    fn parse_dsn() -> Result<()> {
        let dsn = "databend://username:3a%40SC%28nYE%25a1k%3D%7B%7BR@app.databend.com/test?wait_time_secs=10&max_rows_in_buffer=5000000&max_rows_per_page=10000&warehouse=wh&sslmode=disable";
        let args = ConnectionArgs::from_dsn(dsn)?;
        let password_str = "3a@SC(nYE%a1k={{R";
        assert_eq!(args.password.inner(), password_str);
        let expected = ConnectionArgs {
            host: "app.databend.com".to_string(),
            port: None,
            user: "username".to_string(),
            password: SensitiveString::from(password_str),
            database: Some("test".to_string()),
            flight: false,
            args: {
                let mut args = BTreeMap::new();
                args.insert("wait_time_secs".to_string(), "10".to_string());
                args.insert("max_rows_in_buffer".to_string(), "5000000".to_string());
                args.insert("max_rows_per_page".to_string(), "10000".to_string());
                args.insert("warehouse".to_string(), "wh".to_string());
                args.insert("sslmode".to_string(), "disable".to_string());
                args
            },
        };
        assert_eq!(args, expected);
        Ok(())
    }

    #[test]
    fn format_dsn() -> Result<()> {
        let password_str = "3a@SC(nYE%a1k={{R";
        let args = ConnectionArgs {
            host: "app.databend.com".to_string(),
            port: Some(443),
            user: "username".to_string(),
            password: SensitiveString::from(password_str),
            database: Some("test".to_string()),
            flight: false,
            args: {
                let mut args = BTreeMap::new();
                args.insert("wait_time_secs".to_string(), "10".to_string());
                args.insert("max_rows_in_buffer".to_string(), "5000000".to_string());
                args.insert("max_rows_per_page".to_string(), "10000".to_string());
                args.insert("warehouse".to_string(), "wh".to_string());
                args.insert("sslmode".to_string(), "disable".to_string());
                args
            },
        };
        let dsn = args.get_dsn()?;
        let expected = "databend://username:3a%40SC%28nYE%25a1k%3D%7B%7BR@app.databend.com:443/test?max_rows_in_buffer=5000000&max_rows_per_page=10000&sslmode=disable&wait_time_secs=10&warehouse=wh";
        assert_eq!(dsn, expected);
        Ok(())
    }
}