sol_parser_sdk/
rpc_parser.rs

1//! RPC Transaction Parser
2//!
3//! 提供独立的 RPC 交易解析功能，不依赖 gRPC streaming
4//! 可以用于测试验证和离线分析
5
6use crate::core::events::DexEvent;
7use crate::grpc::instruction_parser::parse_instructions_enhanced;
8use crate::grpc::types::EventTypeFilter;
9use crate::instr::read_pubkey_fast;
10use base64::{engine::general_purpose, Engine as _};
11use solana_client::rpc_client::RpcClient;
12use solana_client::rpc_config::RpcTransactionConfig;
13use solana_sdk::pubkey::Pubkey;
14use solana_sdk::signature::Signature;
15use solana_transaction_status::{
16    EncodedConfirmedTransactionWithStatusMeta, EncodedTransaction, UiTransactionEncoding,
17};
18use std::collections::HashMap;
19use yellowstone_grpc_proto::prelude::{
20    CompiledInstruction, InnerInstruction, InnerInstructions, Message, MessageAddressTableLookup,
21    MessageHeader, Transaction, TransactionStatusMeta,
22};
23
24/// Parse a transaction from RPC by signature
25///
26/// # Arguments
27/// * `rpc_client` - RPC client to fetch the transaction
28/// * `signature` - Transaction signature
29/// * `filter` - Optional event type filter
30///
31/// # Returns
32/// Vector of parsed DEX events
33///
34/// # Example
35/// ```no_run
36/// use solana_client::rpc_client::RpcClient;
37/// use solana_sdk::signature::Signature;
38/// use sol_parser_sdk::parse_transaction_from_rpc;
39/// use std::str::FromStr;
40///
41/// let client = RpcClient::new("https://api.mainnet-beta.solana.com".to_string());
42/// let sig = Signature::from_str("your-signature-here").unwrap();
43/// let events = parse_transaction_from_rpc(&client, &sig, None).unwrap();
44/// ```
45pub fn parse_transaction_from_rpc(
46    rpc_client: &RpcClient,
47    signature: &Signature,
48    filter: Option<&EventTypeFilter>,
49) -> Result<Vec<DexEvent>, ParseError> {
50    // Fetch transaction from RPC with V0 transaction support
51    let config = RpcTransactionConfig {
52        encoding: Some(UiTransactionEncoding::Base64),
53        commitment: None,
54        max_supported_transaction_version: Some(0),
55    };
56
57    let rpc_tx = rpc_client.get_transaction_with_config(signature, config).map_err(|e| {
58        let msg = e.to_string();
59        if msg.contains("invalid type: null") && msg.contains("EncodedConfirmedTransactionWithStatusMeta") {
60            ParseError::RpcError(format!(
61                "Transaction not found (RPC returned null). Common causes: 1) Transaction is too old and pruned (use an archive RPC). 2) Wrong network or invalid signature. Try SOLANA_RPC_URL with an archive endpoint (e.g. Helius, QuickNode) or a more recent tx. Original: {}",
62                msg
63            ))
64        } else {
65            ParseError::RpcError(msg)
66        }
67    })?;
68
69    parse_rpc_transaction(&rpc_tx, filter)
70}
71
72/// Parse a RPC transaction structure
73///
74/// # Arguments
75/// * `rpc_tx` - RPC transaction to parse
76/// * `filter` - Optional event type filter
77///
78/// # Returns
79/// Vector of parsed DEX events
80///
81/// # Example
82/// ```no_run
83/// use sol_parser_sdk::parse_rpc_transaction;
84///
85/// // Assuming you have an rpc_tx from RPC
86/// // let events = parse_rpc_transaction(&rpc_tx, None).unwrap();
87/// ```
88pub fn parse_rpc_transaction(
89    rpc_tx: &EncodedConfirmedTransactionWithStatusMeta,
90    filter: Option<&EventTypeFilter>,
91) -> Result<Vec<DexEvent>, ParseError> {
92    // Convert RPC format to gRPC format
93    let (grpc_meta, grpc_tx) = convert_rpc_to_grpc(rpc_tx)?;
94
95    // Extract metadata
96    let signature = extract_signature(rpc_tx)?;
97    let slot = rpc_tx.slot;
98    let block_time_us = rpc_tx.block_time.map(|t| t * 1_000_000);
99    let grpc_recv_us =
100        std::time::SystemTime::now().duration_since(std::time::UNIX_EPOCH).unwrap().as_micros()
101            as i64;
102
103    // Wrap grpc_tx in Option for reuse
104    let grpc_tx_opt = Some(grpc_tx);
105
106    let recent_blockhash = grpc_tx_opt.as_ref().and_then(|t| t.message.as_ref()).and_then(|m| {
107        if m.recent_blockhash.is_empty() {
108            None
109        } else {
110            Some(m.recent_blockhash.clone())
111        }
112    });
113
114    let mut program_invokes: HashMap<Pubkey, Vec<(i32, i32)>> = HashMap::new();
115
116    if let Some(ref tx) = grpc_tx_opt {
117        if let Some(ref msg) = tx.message {
118            let keys_len = msg.account_keys.len();
119            let writable_len = grpc_meta.loaded_writable_addresses.len();
120            let get_key = |i: usize| -> Option<&Vec<u8>> {
121                if i < keys_len {
122                    msg.account_keys.get(i)
123                } else if i < keys_len + writable_len {
124                    grpc_meta.loaded_writable_addresses.get(i - keys_len)
125                } else {
126                    grpc_meta.loaded_readonly_addresses.get(i - keys_len - writable_len)
127                }
128            };
129
130            for (i, ix) in msg.instructions.iter().enumerate() {
131                let pid = get_key(ix.program_id_index as usize)
132                    .map_or(Pubkey::default(), |k| read_pubkey_fast(k));
133                program_invokes.entry(pid).or_default().push((i as i32, -1));
134            }
135
136            for inner in &grpc_meta.inner_instructions {
137                let outer_idx = inner.index as usize;
138                for (j, inner_ix) in inner.instructions.iter().enumerate() {
139                    let pid = get_key(inner_ix.program_id_index as usize)
140                        .map_or(Pubkey::default(), |k| read_pubkey_fast(k));
141                    program_invokes.entry(pid).or_default().push((outer_idx as i32, j as i32));
142                }
143            }
144        }
145    }
146
147    // Parse instructions
148    let mut events = parse_instructions_enhanced(
149        &grpc_meta,
150        &grpc_tx_opt,
151        signature,
152        slot,
153        0, // tx_idx
154        block_time_us,
155        grpc_recv_us,
156        filter,
157    );
158
159    // Parse logs (for protocols like PumpFun that emit events in logs)
160    let mut is_created_buy = false;
161
162    for log in &grpc_meta.log_messages {
163        if let Some(mut event) = crate::logs::parse_log(
164            log,
165            signature,
166            slot,
167            0, // tx_index
168            block_time_us,
169            grpc_recv_us,
170            filter,
171            is_created_buy,
172            recent_blockhash.as_deref(),
173        ) {
174            // Check if this is a PumpFun create event to set is_created_buy flag
175            if matches!(event, DexEvent::PumpFunCreate(_) | DexEvent::PumpFunCreateV2(_)) {
176                is_created_buy = true;
177            }
178
179            // Fill account fields - use same function as gRPC parsing
180            crate::core::account_dispatcher::fill_accounts_with_owned_keys(
181                &mut event,
182                &grpc_meta,
183                &grpc_tx_opt,
184                &program_invokes,
185            );
186
187            // Fill additional data fields (e.g., PumpSwap is_pump_pool)
188            crate::core::common_filler::fill_data(
189                &mut event,
190                &grpc_meta,
191                &grpc_tx_opt,
192                &program_invokes,
193            );
194
195            events.push(event);
196        }
197    }
198
199    Ok(events)
200}
201
202/// Parse error types
203#[derive(Debug)]
204pub enum ParseError {
205    RpcError(String),
206    ConversionError(String),
207    MissingField(String),
208}
209
210impl std::fmt::Display for ParseError {
211    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
212        match self {
213            ParseError::RpcError(msg) => write!(f, "RPC error: {}", msg),
214            ParseError::ConversionError(msg) => write!(f, "Conversion error: {}", msg),
215            ParseError::MissingField(msg) => write!(f, "Missing field: {}", msg),
216        }
217    }
218}
219
220impl std::error::Error for ParseError {}
221
222// ============================================================================
223// Internal conversion functions
224// ============================================================================
225
226fn extract_signature(
227    rpc_tx: &EncodedConfirmedTransactionWithStatusMeta,
228) -> Result<Signature, ParseError> {
229    let ui_tx = &rpc_tx.transaction.transaction;
230
231    match ui_tx {
232        EncodedTransaction::Binary(data, _encoding) => {
233            let bytes = general_purpose::STANDARD.decode(data).map_err(|e| {
234                ParseError::ConversionError(format!("Failed to decode base64: {}", e))
235            })?;
236
237            let versioned_tx: solana_sdk::transaction::VersionedTransaction =
238                bincode::deserialize(&bytes).map_err(|e| {
239                    ParseError::ConversionError(format!("Failed to deserialize transaction: {}", e))
240                })?;
241
242            Ok(versioned_tx.signatures[0])
243        }
244        _ => Err(ParseError::ConversionError("Unsupported transaction encoding".to_string())),
245    }
246}
247
248pub fn convert_rpc_to_grpc(
249    rpc_tx: &EncodedConfirmedTransactionWithStatusMeta,
250) -> Result<(TransactionStatusMeta, Transaction), ParseError> {
251    let rpc_meta = rpc_tx
252        .transaction
253        .meta
254        .as_ref()
255        .ok_or_else(|| ParseError::MissingField("meta".to_string()))?;
256
257    // Convert meta
258    let mut grpc_meta = TransactionStatusMeta {
259        err: None,
260        fee: rpc_meta.fee,
261        pre_balances: rpc_meta.pre_balances.clone(),
262        post_balances: rpc_meta.post_balances.clone(),
263        inner_instructions: Vec::new(),
264        log_messages: {
265            let opt: Option<Vec<String>> = rpc_meta.log_messages.clone().into();
266            opt.unwrap_or_default()
267        },
268        pre_token_balances: Vec::new(),
269        post_token_balances: Vec::new(),
270        rewards: Vec::new(),
271        loaded_writable_addresses: {
272            let loaded_opt: Option<solana_transaction_status::UiLoadedAddresses> =
273                rpc_meta.loaded_addresses.clone().into();
274            loaded_opt
275                .map(|addrs| {
276                    addrs
277                        .writable
278                        .iter()
279                        .map(|pk_str| {
280                            use std::str::FromStr;
281                            solana_sdk::pubkey::Pubkey::from_str(pk_str)
282                                .unwrap()
283                                .to_bytes()
284                                .to_vec()
285                        })
286                        .collect()
287                })
288                .unwrap_or_default()
289        },
290        loaded_readonly_addresses: {
291            let loaded_opt: Option<solana_transaction_status::UiLoadedAddresses> =
292                rpc_meta.loaded_addresses.clone().into();
293            loaded_opt
294                .map(|addrs| {
295                    addrs
296                        .readonly
297                        .iter()
298                        .map(|pk_str| {
299                            use std::str::FromStr;
300                            solana_sdk::pubkey::Pubkey::from_str(pk_str)
301                                .unwrap()
302                                .to_bytes()
303                                .to_vec()
304                        })
305                        .collect()
306                })
307                .unwrap_or_default()
308        },
309        return_data: None,
310        compute_units_consumed: rpc_meta.compute_units_consumed.clone().into(),
311
312        inner_instructions_none: {
313            let opt: Option<Vec<_>> = rpc_meta.inner_instructions.clone().into();
314            opt.is_none()
315        },
316        log_messages_none: {
317            let opt: Option<Vec<String>> = rpc_meta.log_messages.clone().into();
318            opt.is_none()
319        },
320        return_data_none: {
321            let opt: Option<solana_transaction_status::UiTransactionReturnData> =
322                rpc_meta.return_data.clone().into();
323            opt.is_none()
324        },
325        cost_units: rpc_meta.compute_units_consumed.clone().into(),
326    };
327
328    // Convert inner instructions
329    let inner_instructions_opt: Option<Vec<_>> = rpc_meta.inner_instructions.clone().into();
330    if let Some(ref inner_instructions) = inner_instructions_opt {
331        for inner in inner_instructions {
332            let mut grpc_inner =
333                InnerInstructions { index: inner.index as u32, instructions: Vec::new() };
334
335            for ix in &inner.instructions {
336                if let solana_transaction_status::UiInstruction::Compiled(compiled) = ix {
337                    // Decode base58 data
338                    let data = bs58::decode(&compiled.data).into_vec().map_err(|e| {
339                        ParseError::ConversionError(format!(
340                            "Failed to decode instruction data: {}",
341                            e
342                        ))
343                    })?;
344
345                    grpc_inner.instructions.push(InnerInstruction {
346                        program_id_index: compiled.program_id_index as u32,
347                        accounts: compiled.accounts.clone(),
348                        data,
349                        stack_height: compiled.stack_height.map(|h| h as u32),
350                    });
351                }
352            }
353
354            grpc_meta.inner_instructions.push(grpc_inner);
355        }
356    }
357
358    // Convert transaction
359    let ui_tx = &rpc_tx.transaction.transaction;
360
361    let (message, signatures) = match ui_tx {
362        EncodedTransaction::Binary(data, _encoding) => {
363            // Decode base64
364            let bytes = general_purpose::STANDARD.decode(data).map_err(|e| {
365                ParseError::ConversionError(format!("Failed to decode base64: {}", e))
366            })?;
367
368            // Parse as versioned transaction
369            let versioned_tx: solana_sdk::transaction::VersionedTransaction =
370                bincode::deserialize(&bytes).map_err(|e| {
371                    ParseError::ConversionError(format!("Failed to deserialize transaction: {}", e))
372                })?;
373
374            let sigs: Vec<Vec<u8>> =
375                versioned_tx.signatures.iter().map(|s| s.as_ref().to_vec()).collect();
376
377            let message = match versioned_tx.message {
378                solana_sdk::message::VersionedMessage::Legacy(legacy_msg) => {
379                    convert_legacy_message(&legacy_msg)?
380                }
381                solana_sdk::message::VersionedMessage::V0(v0_msg) => convert_v0_message(&v0_msg)?,
382            };
383
384            (message, sigs)
385        }
386        EncodedTransaction::Json(_) => {
387            return Err(ParseError::ConversionError(
388                "JSON encoded transactions not supported yet".to_string(),
389            ));
390        }
391        _ => {
392            return Err(ParseError::ConversionError(
393                "Unsupported transaction encoding".to_string(),
394            ));
395        }
396    };
397
398    let grpc_tx = Transaction { signatures, message: Some(message) };
399
400    Ok((grpc_meta, grpc_tx))
401}
402
403fn convert_legacy_message(
404    msg: &solana_sdk::message::legacy::Message,
405) -> Result<Message, ParseError> {
406    let account_keys: Vec<Vec<u8>> =
407        msg.account_keys.iter().map(|k| k.to_bytes().to_vec()).collect();
408
409    let instructions: Vec<CompiledInstruction> = msg
410        .instructions
411        .iter()
412        .map(|ix| CompiledInstruction {
413            program_id_index: ix.program_id_index as u32,
414            accounts: ix.accounts.clone(),
415            data: ix.data.clone(),
416        })
417        .collect();
418
419    Ok(Message {
420        header: Some(MessageHeader {
421            num_required_signatures: msg.header.num_required_signatures as u32,
422            num_readonly_signed_accounts: msg.header.num_readonly_signed_accounts as u32,
423            num_readonly_unsigned_accounts: msg.header.num_readonly_unsigned_accounts as u32,
424        }),
425        account_keys,
426        recent_blockhash: msg.recent_blockhash.to_bytes().to_vec(),
427        instructions,
428        versioned: false,
429        address_table_lookups: Vec::new(),
430    })
431}
432
433fn convert_v0_message(msg: &solana_sdk::message::v0::Message) -> Result<Message, ParseError> {
434    let account_keys: Vec<Vec<u8>> =
435        msg.account_keys.iter().map(|k| k.to_bytes().to_vec()).collect();
436
437    let instructions: Vec<CompiledInstruction> = msg
438        .instructions
439        .iter()
440        .map(|ix| CompiledInstruction {
441            program_id_index: ix.program_id_index as u32,
442            accounts: ix.accounts.clone(),
443            data: ix.data.clone(),
444        })
445        .collect();
446
447    Ok(Message {
448        header: Some(MessageHeader {
449            num_required_signatures: msg.header.num_required_signatures as u32,
450            num_readonly_signed_accounts: msg.header.num_readonly_signed_accounts as u32,
451            num_readonly_unsigned_accounts: msg.header.num_readonly_unsigned_accounts as u32,
452        }),
453        account_keys,
454        recent_blockhash: msg.recent_blockhash.to_bytes().to_vec(),
455        instructions,
456        versioned: true,
457        address_table_lookups: msg
458            .address_table_lookups
459            .iter()
460            .map(|lookup| MessageAddressTableLookup {
461                account_key: lookup.account_key.to_bytes().to_vec(),
462                writable_indexes: lookup.writable_indexes.clone(),
463                readonly_indexes: lookup.readonly_indexes.clone(),
464            })
465            .collect(),
466    })
467}
sol_parser_sdk/rpc_parser.rs

sol_parser_sdk/
rpc_parser.rs
