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
153
154

use chrono::{DateTime, Utc};
use serde::{Deserialize, Serialize};

use crate::entities::{CompressionAlgorithm, Epoch};
use crate::messages::CardanoDbBeaconMessagePart;

/// Message structure of a snapshot
#[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
pub struct SnapshotMessage {
    /// Digest that is signed by the signer participants
    pub digest: String,

    /// Cardano network
    pub network: String,

    /// Mithril beacon on the Cardano chain
    pub beacon: CardanoDbBeaconMessagePart,

    /// Hash of the associated certificate
    pub certificate_hash: String,

    /// Size of the snapshot file in Bytes
    pub size: u64,

    /// Date and time at which the snapshot was created
    pub created_at: DateTime<Utc>,

    /// Locations where the binary content of the snapshot can be retrieved
    pub locations: Vec<String>,

    /// Compression algorithm of the snapshot archive
    pub compression_algorithm: CompressionAlgorithm,

    /// Cardano node version
    pub cardano_node_version: String,
}

impl SnapshotMessage {
    /// Return a dummy test entity (test-only).
    pub fn dummy() -> Self {
        Self {
            digest: "0b9f5ad7f33cc523775c82249294eb8a1541d54f08eb3107cafc5638403ec7c6".to_string(),
            network: "preview".to_string(),
            beacon: CardanoDbBeaconMessagePart {
                network: Some("preview".to_string()),
                epoch: Epoch(86),
                immutable_file_number: 1728,
            },
            certificate_hash: "d5daf6c03ace4a9c074e951844075b9b373bafc4e039160e3e2af01823e9abfb"
                .to_string(),
            size: 807803196,
            created_at: DateTime::parse_from_rfc3339("2023-01-19T13:43:05.618857482Z")
                .unwrap()
                .with_timezone(&Utc),
            locations: vec!["https://host/certificate.tar.gz".to_string()],
            compression_algorithm: CompressionAlgorithm::Gzip,
            cardano_node_version: "0.0.1".to_string(),
        }
    }
}

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

    const ACTUAL_JSON: &str = r#"{
        "digest": "0b9f5ad7f33cc523775c82249294eb8a1541d54f08eb3107cafc5638403ec7c6",
        "network": "preview",
        "beacon": {
            "network": "preview",
            "epoch": 86,
            "immutable_file_number": 1728
        },
        "certificate_hash": "d5daf6c03ace4a9c074e951844075b9b373bafc4e039160e3e2af01823e9abfb",
        "size": 807803196,
        "created_at": "2023-01-19T13:43:05.618857482Z",
        "locations": [
            "https://host/certificate.tar.gz"
        ],
        "compression_algorithm": "gzip",
        "cardano_node_version": "0.0.1"
    }"#;

    #[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
    pub struct SnapshotMessageUntilV0_1_35 {
        pub digest: String,
        pub beacon: CardanoDbBeaconMessagePart,
        pub certificate_hash: String,
        pub size: u64,
        pub created_at: DateTime<Utc>,
        pub locations: Vec<String>,
        #[serde(skip_serializing_if = "Option::is_none")]
        pub compression_algorithm: Option<CompressionAlgorithm>,
        #[serde(skip_serializing_if = "Option::is_none")]
        pub cardano_node_version: Option<String>,
    }

    fn golden_message_until_open_api_0_1_35() -> SnapshotMessageUntilV0_1_35 {
        SnapshotMessageUntilV0_1_35 {
            digest: "0b9f5ad7f33cc523775c82249294eb8a1541d54f08eb3107cafc5638403ec7c6".to_string(),
            beacon: CardanoDbBeaconMessagePart {
                network: Some("preview".to_string()),
                epoch: Epoch(86),
                immutable_file_number: 1728,
            },
            certificate_hash: "d5daf6c03ace4a9c074e951844075b9b373bafc4e039160e3e2af01823e9abfb"
                .to_string(),
            size: 807803196,
            created_at: DateTime::parse_from_rfc3339("2023-01-19T13:43:05.618857482Z")
                .unwrap()
                .with_timezone(&Utc),
            locations: vec!["https://host/certificate.tar.gz".to_string()],
            compression_algorithm: Some(CompressionAlgorithm::Gzip),
            cardano_node_version: Some("0.0.1".to_string()),
        }
    }

    fn golden_message_actual() -> SnapshotMessage {
        SnapshotMessage {
            digest: "0b9f5ad7f33cc523775c82249294eb8a1541d54f08eb3107cafc5638403ec7c6".to_string(),
            network: "preview".to_string(),
            beacon: CardanoDbBeaconMessagePart {
                network: Some("preview".to_string()),
                epoch: Epoch(86),
                immutable_file_number: 1728,
            },
            certificate_hash: "d5daf6c03ace4a9c074e951844075b9b373bafc4e039160e3e2af01823e9abfb"
                .to_string(),
            size: 807803196,
            created_at: DateTime::parse_from_rfc3339("2023-01-19T13:43:05.618857482Z")
                .unwrap()
                .with_timezone(&Utc),
            locations: vec!["https://host/certificate.tar.gz".to_string()],
            compression_algorithm: CompressionAlgorithm::Gzip,
            cardano_node_version: "0.0.1".to_string(),
        }
    }

    #[test]
    fn test_actual_json_deserialized_into_message_supported_until_open_api_0_1_35() {
        let json = ACTUAL_JSON;
        let message: SnapshotMessageUntilV0_1_35 = serde_json::from_str(json).unwrap();

        assert_eq!(golden_message_until_open_api_0_1_35(), message);
    }

    #[test]
    fn test_actual_json_deserialized_into_actual_message() {
        let json = ACTUAL_JSON;
        let message: SnapshotMessage = serde_json::from_str(json).unwrap();

        assert_eq!(golden_message_actual(), message);
    }
}