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
|
use serde::{Deserialize, Serialize};
use garage_table::crdt::*;
use garage_table::*;
/// An api key
#[derive(PartialEq, Clone, Debug, Serialize, Deserialize)]
pub struct Key {
/// The id of the key (immutable)
pub key_id: String,
/// The secret_key associated
// shouldn't it be hashed or something, so it's trully secret?
pub secret_key: String,
/// Name for the key
pub name: crdt::LWW<String>,
/// Is the key deleted
pub deleted: crdt::Bool,
/// Buckets in which the key is authorized. Empty if `Key` is deleted
pub authorized_buckets: crdt::LWWMap<String, PermissionSet>,
}
impl Key {
/// Create a new key
pub fn new(name: String) -> Self {
let key_id = format!("GK{}", hex::encode(&rand::random::<[u8; 12]>()[..]));
let secret_key = hex::encode(&rand::random::<[u8; 32]>()[..]);
Self {
key_id,
secret_key,
name: crdt::LWW::new(name),
deleted: crdt::Bool::new(false),
authorized_buckets: crdt::LWWMap::new(),
}
}
/// Import a key from it's parts
pub fn import(key_id: &str, secret_key: &str, name: &str) -> Self {
Self {
key_id: key_id.to_string(),
secret_key: secret_key.to_string(),
name: crdt::LWW::new(name.to_string()),
deleted: crdt::Bool::new(false),
authorized_buckets: crdt::LWWMap::new(),
}
}
/// Create a new Key which can me merged to mark an existing key deleted
pub fn delete(key_id: String) -> Self {
Self {
key_id,
secret_key: "".into(),
name: crdt::LWW::new("".to_string()),
deleted: crdt::Bool::new(true),
authorized_buckets: crdt::LWWMap::new(),
}
}
/// Check if `Key` is allowed to read in bucket
pub fn allow_read(&self, bucket: &str) -> bool {
self.authorized_buckets
.get(&bucket.to_string())
.map(|x| x.allow_read)
.unwrap_or(false)
}
/// Check if `Key` is allowed to write in bucket
pub fn allow_write(&self, bucket: &str) -> bool {
self.authorized_buckets
.get(&bucket.to_string())
.map(|x| x.allow_write)
.unwrap_or(false)
}
}
/// Permission given to a key in a bucket
#[derive(PartialOrd, Ord, PartialEq, Eq, Clone, Debug, Serialize, Deserialize)]
pub struct PermissionSet {
/// The key can be used to read the bucket
pub allow_read: bool,
/// The key can be used to write in the bucket
pub allow_write: bool,
}
impl AutoCRDT for PermissionSet {
const WARN_IF_DIFFERENT: bool = true;
}
impl Entry<EmptyKey, String> for Key {
fn partition_key(&self) -> &EmptyKey {
&EmptyKey
}
fn sort_key(&self) -> &String {
&self.key_id
}
}
impl CRDT for Key {
fn merge(&mut self, other: &Self) {
self.name.merge(&other.name);
self.deleted.merge(&other.deleted);
if self.deleted.get() {
self.authorized_buckets.clear();
} else {
self.authorized_buckets.merge(&other.authorized_buckets);
}
}
}
pub struct KeyTable;
#[derive(Clone, Debug, Serialize, Deserialize)]
pub enum KeyFilter {
Deleted(DeletedFilter),
Matches(String),
}
impl TableSchema for KeyTable {
type P = EmptyKey;
type S = String;
type E = Key;
type Filter = KeyFilter;
fn updated(&self, _old: Option<Self::E>, _new: Option<Self::E>) {
// nothing to do when updated
}
fn matches_filter(entry: &Self::E, filter: &Self::Filter) -> bool {
match filter {
KeyFilter::Deleted(df) => df.apply(entry.deleted.get()),
KeyFilter::Matches(pat) => {
let pat = pat.to_lowercase();
entry.key_id.to_lowercase().starts_with(&pat)
|| entry.name.get().to_lowercase() == pat
}
}
}
}
|
