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

// Copyright Materialize, Inc. and contributors. All rights reserved.
//
// Use of this software is governed by the Business Source License
// included in the LICENSE file.
//
// As of the Change Date specified in that file, in accordance with
// the Business Source License, use of this software will be governed
// by the Apache License, Version 2.0.

use std::fmt;
use std::str::FromStr;

use anyhow::{anyhow, Error};
use mz_lowertest::MzReflect;
use mz_proto::{RustType, TryFromProtoError};
use proptest_derive::Arbitrary;
use serde::{Deserialize, Serialize};

include!(concat!(env!("OUT_DIR"), "/mz_repr.catalog_item_id.rs"));

/// The identifier for an item within the Catalog.
#[derive(
    Arbitrary,
    Clone,
    Copy,
    Debug,
    Eq,
    PartialEq,
    Ord,
    PartialOrd,
    Hash,
    Serialize,
    Deserialize,
    MzReflect,
)]
pub enum CatalogItemId {
    /// System namespace.
    System(u64),
    /// Introspection Source Index namespace.
    IntrospectionSourceIndex(u64),
    /// User namespace.
    User(u64),
    /// Transient item.
    Transient(u64),
}

impl CatalogItemId {
    /// Reports whether this ID is in the system namespace.
    pub fn is_system(&self) -> bool {
        matches!(
            self,
            CatalogItemId::System(_) | CatalogItemId::IntrospectionSourceIndex(_)
        )
    }

    /// Reports whether this ID is in the user namespace.
    pub fn is_user(&self) -> bool {
        matches!(self, CatalogItemId::User(_))
    }

    /// Reports whether this ID is for a transient item.
    pub fn is_transient(&self) -> bool {
        matches!(self, CatalogItemId::Transient(_))
    }
}

impl FromStr for CatalogItemId {
    type Err = Error;

    fn from_str(mut s: &str) -> Result<Self, Self::Err> {
        if s.len() < 2 {
            return Err(anyhow!("couldn't parse id {}", s));
        }
        let tag = s.chars().next().unwrap();
        s = &s[1..];
        let variant = match tag {
            's' => {
                if Some('i') == s.chars().next() {
                    s = &s[1..];
                    CatalogItemId::IntrospectionSourceIndex
                } else {
                    CatalogItemId::System
                }
            }
            'u' => CatalogItemId::User,
            't' => CatalogItemId::Transient,
            _ => return Err(anyhow!("couldn't parse id {}", s)),
        };
        let val: u64 = s.parse()?;
        Ok(variant(val))
    }
}

impl fmt::Display for CatalogItemId {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        match self {
            CatalogItemId::System(id) => write!(f, "s{}", id),
            CatalogItemId::IntrospectionSourceIndex(id) => write!(f, "si{}", id),
            CatalogItemId::User(id) => write!(f, "u{}", id),
            CatalogItemId::Transient(id) => write!(f, "t{}", id),
        }
    }
}

impl RustType<ProtoCatalogItemId> for CatalogItemId {
    fn into_proto(&self) -> ProtoCatalogItemId {
        use proto_catalog_item_id::Kind::*;
        ProtoCatalogItemId {
            kind: Some(match self {
                CatalogItemId::System(x) => System(*x),
                CatalogItemId::IntrospectionSourceIndex(x) => IntrospectionSourceIndex(*x),
                CatalogItemId::User(x) => User(*x),
                CatalogItemId::Transient(x) => Transient(*x),
            }),
        }
    }

    fn from_proto(proto: ProtoCatalogItemId) -> Result<Self, TryFromProtoError> {
        use proto_catalog_item_id::Kind::*;
        match proto.kind {
            Some(System(x)) => Ok(CatalogItemId::System(x)),
            Some(IntrospectionSourceIndex(x)) => Ok(CatalogItemId::IntrospectionSourceIndex(x)),
            Some(User(x)) => Ok(CatalogItemId::User(x)),
            Some(Transient(x)) => Ok(CatalogItemId::Transient(x)),
            None => Err(TryFromProtoError::missing_field("ProtoCatalogItemId::kind")),
        }
    }
}

#[cfg(test)]
mod tests {
    use proptest::prelude::*;

    use super::*;

    #[mz_ore::test]
    fn proptest_catalog_item_id_roundtrips() {
        fn testcase(og: CatalogItemId) {
            let s = og.to_string();
            let rnd: CatalogItemId = s.parse().unwrap();
            assert_eq!(og, rnd);
        }

        proptest!(|(id in any::<CatalogItemId>())| {
            testcase(id);
        })
    }
}