go-ethereum/docs/xdc/debug/debug.md
JukLee0ira b114eb0e5b
docs: update jsonrpc api document (#1468)
* module admin

* module eth

* module net

* module txpool

* module XDPoS

* module miner

* module debug
2025-09-11 08:45:23 +08:00

1204 lines
23 KiB
Markdown

# Module debug
The `debug` API gives you access to several non-standard RPC methods, which will allow you to inspect, debug and set certain debugging flags during runtime.
## Method debug_blockProfile
The `blockProfile` method turns on block profiling for the given duration and writes profile data to disk. It uses a profile rate of 1 for most accurate information. If a different rate is desired, set the rate and write the profile manually using debug_writeBlockProfile.
Parameters:
- file: string, required, file name
- nsec: uint, required, number of seconds
Returns:
result: error
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_blockProfile",
"params": [
"block-profile.bin",
10
]
}' | jq
```
## Method debug_chaindbCompact
The `chaindbCompact` method flattens the entire key-value database into a single level, removing all unused slots and merging all keys.
Parameters:
None
Returns:
result: error
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_chaindbCompact"
}' | jq
```
## Method debug_chaindbProperty
The `chaindbProperty` method returns leveldb properties of the key-value database.
Parameters:
- property: string, required
Returns:
result: string
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_chaindbProperty",
"params": [
""
]
}' | jq
```
## Method debug_cpuProfile
The `cpuProfile` method turns on CPU profiling for the given duration and writes profile data to disk.
Parameters:
- file: string, required, file name
- nsec: uint, required, number of seconds
Returns:
result: error
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_cpuProfile",
"params": [
"cpu-profile.bin",
10
]
}' | jq
```
Response:
```json
{
"jsonrpc": "2.0",
"id": 1001,
"result": null
}
```
## Method debug_dbGet
The `dbGet` method returns the raw value of a key stored in the database.
Parameters:
- key: string, required
Returns:
result: array of byte
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_dbGet",
"params": [
"key"
]
}' | jq
```
## Method debug_dumpBlock
The `dumpBlock` method retrieves the entire state of the database at a given block.
Parameters:
- number: BlockNumber, required, block number
Returns:
result: object Dump
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_dumpBlock",
"params": [
"earliest"
]
}' | jq
```
Response:
See [debug_dumpBlock.json](./debug_dumpBlock_response.json)
## Method debug_getBadBlocks
The `getBadBlocks` method returns a list of the last 'bad blocks' that the client has seen on the network and returns them as a JSON list of block-hashes.
Parameters:
None
Returns:
result: array of BadBlockArgs
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_getBadBlocks"
}' | jq
```
Response:
```json
{
"jsonrpc": "2.0",
"id": 1001,
"result": []
}
```
## Method debug_gcStats
The `gcStats` method returns garbage collection statistics.
Parameters:
None
Returns:
result: ojbect GCStats
See <https://golang.org/pkg/runtime/debug/#GCStats> for information about the fields of the returned object.
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_gcStats"
}' | jq
```
Response:
See [debug_gcStats.json](./debug_gcStats_response.json)
## Method debug_getBlockRlp
The `getBlockRlp` retrieves the RLP encoded for of a single block.
Parameters:
- number: uint64, required, block number
Returns:
result: string
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_getBlockRlp",
"params": [
0
]
}' | jq
```
Response:
```json
{
"jsonrpc": "2.0",
"id": 1001,
"result": "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"
}
```
## Method debug_getModifiedAccountsByHash
The `getModifiedAccountsByHash` method returns all accounts that have changed between the two blocks specified. A change is defined as a difference in nonce, balance, code hash, or storage hash. With one parameter, returns the list of accounts modified in the specified block.
Parameters:
- startHash: hash, required, start block hash
- endHash: hash optional, end block hash
Returns:
result: array of address
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_getModifiedAccountsByNumber",
"params": [
"start-hash",
"end-hash"
]
}' | jq
```
## Method debug_getModifiedAccountsByNumber
The `getModifiedAccountsByNumber` method returns all accounts that have changed between the two blocks specified. A change is defined as a difference in nonce, balance, code hash or storage hash.
Parameters:
- startNum: uint64, required, start block number
- endNum: uint64, optional, end block number
Returns:
result: array of address
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_getModifiedAccountsByNumber",
"params": [
1
]
}' | jq
```
Response:
```json
{
"jsonrpc": "2.0",
"id": 1001,
"result": null
}
```
## Method debug_goTrace
The `goTrace` method turns on Go runtime tracing for the given duration and writes trace data to disk.
Parameters:
- file: string, required, file name
- nsec: uint, required, number of seconds
Returns:
result: error
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_goTrace",
"params": [
"go-trace.bin",
10
]
}' | jq
```
## Method debug_freeOSMemory
The debug `freeOSMemory` forces garbage collection.
Parameters:
None
Returns:
result: null
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_freeOSMemory"
}' | jq
```
Response:
```json
{
"jsonrpc": "2.0",
"id": 1001,
"result": null
}
```
## Method debug_memStats
The `memStats` method returns detailed runtime memory statistics.
Parameters:
None
Returns:
result: object MemStats
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_memStats"
}' | jq
```
Response:
See [debug_memStats_response.json](./debug_memStats_response.json)
## Method debug_mutexProfile
The `mutexProfile` method turns on mutex profiling for nsec seconds and writes profile data to file. It uses a profile rate of 1 for most accurate information. If a different rate is desired, set the rate and write the profile manually.
Parameters:
- file: string, required, file name
- nsec: uint, required, number of seconds
Returns:
result: error
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_mutexProfile",
"params": [
"mutex-profile.bin",
10
]
}' | jq
```
## Method debug_preimage
The `preimage` method returns the preimage for a sha3 hash, if known.
Parameters:
- hash: hash, required
Returns:
result: array of bytes
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_preimage",
"params": [
"hash",
]
}' | jq
```
## Method debug_printBlock
The `printBlock` method retrieves a block and returns its pretty printed form.
Parameters:
- number: uint64, required, block number
Returns:
result: string
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_printBlock",
"params": [
0
]
}' | jq
```
Response:
```json
{
"jsonrpc": "2.0",
"id": 1001,
"result": "Block(#0): Size: 669.00 B {\nMinerHash: 5b1ad24d49ce2360509d0c13fd05358abbab323bf6021d8e85ebcc2b2ec7841f\nHeader(4a9d748bd78a8d0385b67788c2435dcdb914f98a96250b68863a1f8b7642d6b1):\n[\n\tParentHash:\t 0000000000000000000000000000000000000000000000000000000000000000\n\tUncleHash:\t 1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347\n\tCoinbase:\t 0000000000000000000000000000000000000000\n\tRoot:\t\t 49be235b0098b048f9805aed38a279d8c189b469ff9ba307b39c7ad3a3bc55ae\n\tTxSha\t\t 56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421\n\tReceiptSha:\t 56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421\n\tBloom:\t\t 00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000\n\tDifficulty:\t 1\n\tNumber:\t\t 0\n\tGasLimit:\t 4700000\n\tGasUsed:\t 0\n\tTime:\t\t 1559211559\n\tExtra:\t\t \u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000%ĸ[K7ĸĸ|ĸĸWsŐ_sgp\"ĸĸĸĸԝ\n,ĸĸĸĸĸĸX\u001aĸeĸNȲĸĸĸޡ\u0000j\\ĸ}ĸĸĸĸĸĸidbĸe\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\n\tMixDigest: 0000000000000000000000000000000000000000000000000000000000000000\n\tNonce:\t\t 0000000000000000\n]\nTransactions:\n[]\nUncles:\n[]\n}\n"
}
```
## Method debug_seedHash
The `seedHash` method retrieves the seed hash of a block.
Parameters:
- number: uint64, required, block number
Returns:
result: string
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_seedHash",
"params": [
0
]
}' | jq
```
Response:
```json
{
"jsonrpc": "2.0",
"id": 1001,
"result": "0x0000000000000000000000000000000000000000000000000000000000000000"
}
```
## Method debug_setBlockProfileRate
The `setBlockProfileRate` method sets the rate (in samples/sec) of goroutine block profile data collection. A non-zero rate enables block profiling, setting it to zero stops the profile. Collected profile data can be written using `debug_writeBlockProfile`.
Parameters:
- rate: int, required
Returns:
result: null
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_setBlockProfileRate",
"params": [
0
]
}' | jq
```
Response:
```json
{
"jsonrpc": "2.0",
"id": 1001,
"result": null
}
```
## Method debug_setGCPercent
The `setGCPercent` method sets the garbage collection target percentage. A negative value disables garbage collection.
Parameters:
- v: int, required
Returns:
result: int
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_setGCPercent",
"params": [
80
]
}' | jq
```
Response:
```json
{
"jsonrpc": "2.0",
"id": 1001,
"result": 100
}
```
## Method debug_setHead
The `setHead` method sets the current head of the local chain by block number. Note, this is a destructive action and may severely damage your chain. Use with extreme caution.
Parameters:
- number: uint64, required, block number
Returns:
result: string
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_setHead",
"params": [
"0x544b420"
]
}' | jq
```
Response:
```json
{
"jsonrpc": "2.0",
"id": 1001,
"result": null
}
```
## Method debug_stacks
The `stacks` method returns a printed representation of the stacks of all goroutines. Note that the web3 wrapper for this method takes care of the printing and does not return the string.
Parameters:
None
Returns:
result: string
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_stacks"
}' | jq
```
Response:
See [debug_stacks_response.json](./debug_stacks_response.json)
## Method debug_startCPUProfile
The `startCPUProfile` method turns on CPU profiling indefinitely, writing to the given file.
Parameters:
- file: string, required, file name
Returns:
result: error
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_startCPUProfile",
"params": [
"cpu-profile.bin"
]
}' | jq
```
Response:
```json
{
"jsonrpc": "2.0",
"id": 1001,
"result": null
}
```
## Method debug_stopCPUProfile
The `stopCPUProfile` method stops an ongoing CPU profile.
Parameters:
None
Returns:
result: error
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_stopCPUProfile"
}' | jq
```
Response:
```json
{
"jsonrpc": "2.0",
"id": 1001,
"result": null
}
```
## Method debug_startGoTrace
The `startGoTrace` starts writing a Go runtime trace to the given file.
Parameters:
- file: string, required, file name
Returns:
result: error
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_startGoTrace",
"params": [
"go-trace.bin"
]
}' | jq
```
Response:
```json
{
"jsonrpc": "2.0",
"id": 1001,
"result": null
}
```
## Method debug_stopGoTrace
The `stopGoTrace` method stops writing the Go runtime trace.
Parameters:
None
Returns:
result: error
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_stopGoTrace"
}' | jq
```
Response:
```json
{
"jsonrpc": "2.0",
"id": 1001,
"result": null
}
```
## Method debug_storageRangeAt
The `storageRangeAt` method returns the storage at the given block height and transaction index. The result can be paged by providing a maxResult to cap the number of storage slots returned as well as specifying the offset via keyStart (hash of storage key).
Parameters:
- blockHash: Hash, required
- txIndex: int, required
- contractAddress: address, required
- keyStart: array of bytes, required
- maxResult: int, required
Returns:
result: object StorageRangeResult
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_storageRangeAt"
}' | jq
```
## Method debug_traceBlock
The `debug_traceBlock` method will return a full stack trace of all invoked opcodes of all transaction that were included in this block. Note, the parent of this block must be present or it will fail. For the second parameter see TraceConfig reference.
Parameters:
- blob: array of byte, required, the RLP encoded block
- config: object of TraceConfig, optional
Returns:
result: array of object txTraceResult
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_traceBlock",
"params": [
"RLP_ENCODED_BLOCK"
]
}' | jq
```
## Method debug_traceBlockByHash
The `traceBlockByHash` method accepts a block hash and will replay the block that is already present in the database.
Parameters:
- hash: Hash, required, block hash
- config: TraceConfig, optional
Returns:
result: array of object txTraceResult
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_traceBlockByHash",
"params": [
"block-hash"
]
}' | jq
```
## Method debug_traceBlockByNumber
The `debug_traceBlockByNumber` method accepts a block number and will replay the block that is already present in the database.
Parameters:
- number: BlockNumber, required, block number
- config: TraceConfig, optional
Returns:
result: array of object txTraceResult
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_traceBlockByNumber",
"params": [
"latest"
]
}' | jq
```
Response:
See [debug_traceBlockByNumber_response.json](./debug_traceBlockByNumber_response.json)
## Method debug_traceBlockFromFile
The `traceBlockFromFile` meothod accepts a file containing the RLP of the block.
Parameters:
- file: string, required, file name
- config: object of TraceConfig, optional
Returns:
result: array of object txTraceResult
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_traceBlockFromFile",
"params": [
"filename"
]
}' | jq
```
## Method debug_traceCall
The `traceCall` method lets you run an eth_call within the context of the given block execution using the final state of parent block as the base.
Parameters:
- args: TransactionArgs, required
- blockNrOrHash: BlockNumberOrHash, required, hash or number
- config: TraceCallConfig, optional
Returns:
same as debug_traceTransaction
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_traceCall",
"params": [
{
"to": "0x46eda75e7ca73cb1c2f83c3927211655420dbc44",
"data": "0x3fb5c1cb00000000000000000000000000000000000000000000000000000000000003e7"
},
"latest",
]
}' | jq
```
Response:
```json
{
"jsonrpc": "2.0",
"id": 1001,
"result": {
"gas": 21528,
"failed": false,
"returnValue": "",
"structLogs": []
}
}
```
## Method debug_traceTransaction
The `traceTransaction` method debugging method will attempt to run the transaction in the exact same manner as it was executed on the network. It will replay any transaction that may have been executed prior to this one before it will finally attempt to execute the transaction that corresponds to the given hash.
Parameters:
- hash: Hash, required, transaction hash
- config: TraceConfig, optional
Returns:
result: object
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_traceTransaction",
"params": [
"tx-hash"
]
}' | jq
```
## Method debug_verbosity
The `verbosity` method sets the logging verbosity ceiling. Log messages with level up to and including the given level will be printed.
Parameters:
- level: int, required
Returns:
result: null
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_verbosity",
"params": [
3
]
}' | jq
```
Response:
```json
{
"jsonrpc": "2.0",
"id": 1001,
"result": null
}
```
## Method debug_vmodule
The `vmodule` method sets the logging verbosity pattern.
Parameters:
- pattern: string, required
Returns:
result: error
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_vmodule",
"params": [
"eth/*=3,p2p=4"
]
}' | jq
```
Response:
```json
{
"jsonrpc": "2.0",
"id": 1001,
"result": null
}
```
## Method debug_writeBlockProfile
The `writeBlockProfile` method writes a goroutine blocking profile to the given file.
Parameters:
- file: string, required
Returns:
result: error
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_writeBlockProfile",
"params": [
"block-profile.bin"
]
}' | jq
```
Response:
```json
{
"jsonrpc": "2.0",
"id": 1001,
"result": null
}
```
## Method debug_writeMemProfile
The `writeMemProfile` method writes an allocation profile to the given file. Note that the profiling rate cannot be set through the API, it must be set on the command line using the `--pprof-memprofilerate` flag.
Parameters:
- file: string, required, file name
Returns:
result: error
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_writeMemProfile",
"params": [
"memory-profile.bin",
]
}' | jq
```
Response:
```json
{
"jsonrpc": "2.0",
"id": 1001,
"result": null
}
```
## Method debug_writeMutexProfile
The `writeMutexProfile` method writes a goroutine blocking profile to the given file.
Parameters:
- file: string, required, file name
Returns:
result: error
Example:
```shell
curl -s -X POST -H "Content-Type: application/json" ${RPC} -d '{
"jsonrpc": "2.0",
"id": 1001,
"method": "debug_writeMutexProfile",
"params": [
"mutex-profile.bin",
]
}' | jq
```
Response:
```json
{
"jsonrpc": "2.0",
"id": 1001,
"result": null
}
```