sim-cli 0.6.0

CLI tool for running and comparing Solana simulator backtests
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

use std::collections::{BTreeSet, HashMap};

use solana_transaction_status::{
    EncodedConfirmedTransactionWithStatusMeta, EncodedTransaction, UiMessage,
    option_serializer::OptionSerializer,
};

use crate::output::{SolChange, TokenChange, Transaction};

/// Build a partial [`Transaction`] from a Solana-standard
/// [`EncodedConfirmedTransactionWithStatusMeta`]. `logs` and `account_diffs`
/// are left empty for callers to fill in. Returns `None` if the meta or the
/// inner transaction body is missing/unusable.
///
/// The payload is produced by the server's `transactionSubscribe` stream,
/// which mirrors the shape of a standard `getTransaction` RPC response. There
/// is no fallback HTTP path: the CLI relies on subscriptions for *all*
/// transaction-level data.
pub fn transaction_from_encoded(
    confirmed: EncodedConfirmedTransactionWithStatusMeta,
    signature: &str,
    slot: u64,
) -> Option<Transaction> {
    let block_time = confirmed.block_time.map(|t| t as u64);
    let inner = confirmed.transaction;
    let meta = inner.meta.as_ref()?;
    let error = meta.err.as_ref().map(|e| e.to_string());

    let static_keys: Vec<String> = match &inner.transaction {
        EncodedTransaction::Json(ui_tx) => match &ui_tx.message {
            UiMessage::Raw(raw) => raw.account_keys.clone(),
            UiMessage::Parsed(parsed) => parsed
                .account_keys
                .iter()
                .map(|k| k.pubkey.clone())
                .collect(),
        },
        _ => return None,
    };

    let mut keys = static_keys;
    if let OptionSerializer::Some(addresses) = &meta.loaded_addresses {
        keys.extend(addresses.writable.iter().cloned());
        keys.extend(addresses.readonly.iter().cloned());
    }

    let sol_changes: Vec<SolChange> = keys
        .iter()
        .enumerate()
        .filter_map(|(i, pubkey)| {
            let pre = *meta.pre_balances.get(i)?;
            let post = *meta.post_balances.get(i)?;
            if pre == post {
                return None;
            }
            Some(SolChange {
                pubkey: pubkey.clone(),
                pre_lamports: pre,
                post_lamports: post,
            })
        })
        .collect();

    let empty = Vec::new();
    let pre_tokens = match &meta.pre_token_balances {
        OptionSerializer::Some(v) => v,
        _ => &empty,
    };
    let post_tokens = match &meta.post_token_balances {
        OptionSerializer::Some(v) => v,
        _ => &empty,
    };

    let mut pre_map: HashMap<u8, (u64, String, String, u8)> = HashMap::new();
    for t in pre_tokens {
        let amount = t.ui_token_amount.amount.parse::<u64>().unwrap_or(0);
        let owner = match &t.owner {
            OptionSerializer::Some(o) => o.clone(),
            _ => String::new(),
        };
        pre_map.insert(
            t.account_index,
            (amount, t.mint.clone(), owner, t.ui_token_amount.decimals),
        );
    }

    let mut post_map: HashMap<u8, (u64, String, String, u8)> = HashMap::new();
    for t in post_tokens {
        let amount = t.ui_token_amount.amount.parse::<u64>().unwrap_or(0);
        let owner = match &t.owner {
            OptionSerializer::Some(o) => o.clone(),
            _ => String::new(),
        };
        post_map.insert(
            t.account_index,
            (amount, t.mint.clone(), owner, t.ui_token_amount.decimals),
        );
    }

    let mut all_indices: BTreeSet<u8> = BTreeSet::new();
    all_indices.extend(pre_map.keys().copied());
    all_indices.extend(post_map.keys().copied());

    let token_changes: Vec<TokenChange> = all_indices
        .into_iter()
        .filter_map(|idx| {
            let pubkey = keys.get(idx as usize)?.clone();
            let (pre_amount, mint, owner, decimals) = if let Some(info) = pre_map.get(&idx) {
                (info.0, info.1.clone(), info.2.clone(), info.3)
            } else {
                let info = post_map.get(&idx)?;
                (0, info.1.clone(), info.2.clone(), info.3)
            };
            let post_amount = post_map.get(&idx).map(|i| i.0).unwrap_or(0);
            if pre_amount == post_amount {
                return None;
            }
            Some(TokenChange {
                pubkey,
                mint,
                owner,
                pre_amount,
                post_amount,
                decimals,
            })
        })
        .collect();

    Some(Transaction {
        slot,
        timestamp: block_time,
        signature: signature.to_string(),
        success: error.is_none(),
        error,
        sol_changes,
        token_changes,
        logs: Vec::new(),
        account_diffs: Vec::new(),
    })
}