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
// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you 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::net::Ipv6Addr;
use std::time::{SystemTime, UNIX_EPOCH};

use chrono::NaiveDateTime;

/// The entry for one line audit log
#[derive(Clone, Debug, Eq, PartialEq)]
pub struct Entry {
    /// Timestamp
    datetime: NaiveDateTime,
    /// Where the request is from.
    ip: Ipv6Addr,
    /// Who conducts the request.
    user: String,
    /// What the user wants.
    message: String,
    /// The result for the message.
    /// true for success and false for failure
    result: bool,
}

impl Default for Entry {
    fn default() -> Self {
        let datetime = NaiveDateTime::from_timestamp_micros(0).unwrap();
        let ip = Ipv6Addr::UNSPECIFIED;
        let user = String::new();
        let message = String::new();
        let result = false;

        Self {
            datetime,
            ip,
            user,
            message,
            result,
        }
    }
}

impl Entry {
    pub fn datetime(&self) -> NaiveDateTime {
        self.datetime
    }

    pub fn ip(&self) -> Ipv6Addr {
        self.ip
    }

    pub fn user(&self) -> String {
        self.user.clone()
    }

    pub fn message(&self) -> String {
        self.message.clone()
    }

    pub fn result(&self) -> bool {
        self.result
    }
}

#[derive(Default, Clone)]
pub struct EntryBuilder {
    /// The microsecond since the UNIX epoch
    microsecond: Option<i64>,
    ip: Option<Ipv6Addr>,
    user: Option<String>,
    message: Option<String>,
    result: Option<bool>,
}

impl EntryBuilder {
    pub fn new() -> Self {
        Default::default()
    }

    pub fn microsecond(mut self, microsecond: i64) -> Self {
        self.microsecond = Some(microsecond);
        self
    }

    pub fn ip(mut self, ip: Ipv6Addr) -> Self {
        self.ip = Some(ip);
        self
    }

    pub fn user(mut self, user: String) -> Self {
        self.user = Some(user);
        self
    }

    pub fn message(mut self, message: String) -> Self {
        self.message = Some(message);
        self
    }

    pub fn result(mut self, result: bool) -> Self {
        self.result = Some(result);
        self
    }

    pub fn build(self) -> Entry {
        let datetime = self
            .microsecond
            .and_then(NaiveDateTime::from_timestamp_micros)
            .unwrap_or_else(|| {
                // The time when the build happens
                let now = SystemTime::now().duration_since(UNIX_EPOCH).unwrap();
                let microsecond = now.as_micros() as i64;
                NaiveDateTime::from_timestamp_micros(microsecond).unwrap()
            });

        Entry {
            datetime,
            ip: self.ip.unwrap_or(Ipv6Addr::UNSPECIFIED),
            user: self.user.unwrap_or_default(),
            message: self.message.unwrap_or_default(),
            result: self.result.unwrap_or(false),
        }
    }
}