Preprocess
Preprocess is called prior to /construction/payloads
to construct a request for any metadata that is needed for transaction construction given (i.e. account nonce). The options
object returned from this endpoint will be sent to the /construction/metadata
endpoint UNMODIFIED by the caller (in an offline execution environment). If your Construction API implementation has configuration options, they MUST be specified in the /construction/preprocess
request (in the metadata
field).
ConstructionPreprocessRequest is passed to the /construction/preprocess
endpoint so that a Rosetta implementation can determine which metadata it needs to request for construction. Metadata provided in this object should NEVER be a product of live data (i.e. the caller must follow some network-specific data fetching strategy outside of the Construction API to populate required Metadata). If live data is required for construction, it MUST be fetched in the call to /construction/metadata
.
POST /construction/preprocess HTTP/1.1
Host:
Content-Type: application/json
Accept: */*
Content-Length: 1245
{
"network_identifier": {
"blockchain": "bitcoin",
"network": "mainnet",
"sub_network_identifier": {
"network": "shard 1",
"metadata": {
"producer": "0x52bc44d5378309ee2abf1539bf71de1b7d7be3b5"
}
}
},
"operations": [
{
"operation_identifier": {
"index": 5,
"network_index": 0
},
"related_operations": [
{
"index": 1
},
{
"index": 2
}
],
"type": "Transfer",
"status": "Reverted",
"account": {
"address": "0x3a065000ab4183c6bf581dc1e55a605455fc6d61",
"sub_account": {
"address": "0x6b175474e89094c44da98b954eedeac495271d0f",
"metadata": {}
},
"metadata": {}
},
"amount": {
"value": "1238089899992",
"currency": {
"symbol": "BTC",
"decimals": 8,
"metadata": {
"Issuer": "Satoshi"
}
},
"metadata": {}
},
"coin_change": {
"coin_identifier": {
"identifier": "0x2f23fd8cca835af21f3ac375bac601f97ead75f2e79143bdf71fe2c4be043e8f:1"
},
"coin_action": "coin_created"
},
"metadata": {
"asm": "304502201fd8abb11443f8b1b9a04e0495e0543d05611473a790c8939f089d073f90509a022100f4677825136605d732e2126d09a2d38c20c75946cd9fc239c0497e84c634e3dd01 03301a8259a12e35694cc22ebc45fee635f4993064190f6ce96e7fb19a03bb6be2",
"hex": "48304502201fd8abb11443f8b1b9a04e0495e0543d05611473a790c8939f089d073f90509a022100f4677825136605d732e2126d09a2d38c20c75946cd9fc239c0497e84c634e3dd012103301a8259a12e35694cc22ebc45fee635f4993064190f6ce96e7fb19a03bb6be2"
}
}
],
"metadata": {}
}
{
"options": {},
"required_public_keys": [
{
"address": "0x3a065000ab4183c6bf581dc1e55a605455fc6d61",
"sub_account": {
"address": "0x6b175474e89094c44da98b954eedeac495271d0f",
"metadata": {}
},
"metadata": {}
}
]
}