aboutsummaryrefslogtreecommitdiff
path: root/src/model/bucket_table.rs
blob: d687e77485507921a9473233681639056f656b15 (plain) (blame)
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
149
150
151
152
use serde::{Deserialize, Serialize};

use garage_table::crdt::Crdt;
use garage_table::*;
use garage_util::data::*;
use garage_util::time::*;

use crate::permission::BucketKeyPerm;

/// A bucket is a collection of objects
///
/// Its parameters are not directly accessible as:
///  - It must be possible to merge paramaters, hence the use of a LWW CRDT.
///  - A bucket has 2 states, Present or Deleted and parameters make sense only if present.
#[derive(PartialEq, Clone, Debug, Serialize, Deserialize)]
pub struct Bucket {
	/// ID of the bucket
	pub id: Uuid,
	/// State, and configuration if not deleted, of the bucket
	pub state: crdt::Deletable<BucketParams>,
}

/// Configuration for a bucket
#[derive(PartialEq, Clone, Debug, Serialize, Deserialize)]
pub struct BucketParams {
	/// Bucket's creation date
	pub creation_date: u64,
	/// Map of key with access to the bucket, and what kind of access they give
	pub authorized_keys: crdt::Map<String, BucketKeyPerm>,
	/// Whether this bucket is allowed for website access
	/// (under all of its global alias names),
	/// and if so, the website configuration XML document
	pub website_config: crdt::Lww<Option<WebsiteConfig>>,
	/// Map of aliases that are or have been given to this bucket
	/// in the global namespace
	/// (not authoritative: this is just used as an indication to
	/// map back to aliases when doing ListBuckets)
	pub aliases: crdt::LwwMap<String, bool>,
	/// Map of aliases that are or have been given to this bucket
	/// in namespaces local to keys
	/// key = (access key id, alias name)
	pub local_aliases: crdt::LwwMap<(String, String), bool>,
}

#[derive(PartialEq, Eq, Clone, Debug, Serialize, Deserialize)]
pub struct WebsiteConfig {
	pub index_document: String,
	pub error_document: Option<String>,
}

impl BucketParams {
	/// Create an empty BucketParams with no authorized keys and no website accesss
	pub fn new() -> Self {
		BucketParams {
			creation_date: now_msec(),
			authorized_keys: crdt::Map::new(),
			website_config: crdt::Lww::new(None),
			aliases: crdt::LwwMap::new(),
			local_aliases: crdt::LwwMap::new(),
		}
	}
}

impl Crdt for BucketParams {
	fn merge(&mut self, o: &Self) {
		self.creation_date = std::cmp::min(self.creation_date, o.creation_date);
		self.authorized_keys.merge(&o.authorized_keys);
		self.website_config.merge(&o.website_config);
		self.aliases.merge(&o.aliases);
		self.local_aliases.merge(&o.local_aliases);
	}
}

impl Default for Bucket {
	fn default() -> Self {
		Self::new()
	}
}

impl Default for BucketParams {
	fn default() -> Self {
		Self::new()
	}
}

impl Bucket {
	/// Initializes a new instance of the Bucket struct
	pub fn new() -> Self {
		Bucket {
			id: gen_uuid(),
			state: crdt::Deletable::present(BucketParams::new()),
		}
	}

	/// Returns true if this represents a deleted bucket
	pub fn is_deleted(&self) -> bool {
		self.state.is_deleted()
	}

	/// Return the list of authorized keys, when each was updated, and the permission associated to
	/// the key
	pub fn authorized_keys(&self) -> &[(String, BucketKeyPerm)] {
		match &self.state {
			crdt::Deletable::Deleted => &[],
			crdt::Deletable::Present(state) => state.authorized_keys.items(),
		}
	}

	pub fn aliases(&self) -> &[(String, u64, bool)] {
		match &self.state {
			crdt::Deletable::Deleted => &[],
			crdt::Deletable::Present(state) => state.aliases.items(),
		}
	}

	pub fn local_aliases(&self) -> &[((String, String), u64, bool)] {
		match &self.state {
			crdt::Deletable::Deleted => &[],
			crdt::Deletable::Present(state) => state.local_aliases.items(),
		}
	}
}

impl Entry<EmptyKey, Uuid> for Bucket {
	fn partition_key(&self) -> &EmptyKey {
		&EmptyKey
	}
	fn sort_key(&self) -> &Uuid {
		&self.id
	}
}

impl Crdt for Bucket {
	fn merge(&mut self, other: &Self) {
		self.state.merge(&other.state);
	}
}

pub struct BucketTable;

impl TableSchema for BucketTable {
	const TABLE_NAME: &'static str = "bucket_v2";

	type P = EmptyKey;
	type S = Uuid;
	type E = Bucket;
	type Filter = DeletedFilter;

	fn matches_filter(entry: &Self::E, filter: &Self::Filter) -> bool {
		filter.apply(entry.is_deleted())
	}
}