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import { arraysEqual, entity, sdk, table, verifyId, verifyOneOrNone } from "../../../index.client";
import { EntityBase } from ".";
export class ProvenTx extends EntityBase<table.ProvenTx> {
/**
* Given a txid and optionally its rawTx, create a new ProvenTx object.
*
* rawTx is fetched if not provided.
*
* Only succeeds (proven is not undefined) if a proof is confirmed for rawTx,
* and hash of rawTx is confirmed to match txid
*
* The returned ProvenTx and ProvenTxReq objects have not been added to the dojo database,
* this is optional and can be done by the caller if appropriate.
*
* @param txid
* @param services
* @param rawTx
* @returns
*/
static async fromTxid(txid: string, services: sdk.WalletServices, rawTx?: number[])
: Promise<ProvenTxFromTxidResult> {
const r: ProvenTxFromTxidResult = { proven: undefined, rawTx }
const chain = services.chain
if (!r.rawTx) {
const gr = await services.getRawTx(txid)
if (!gr?.rawTx)
// Failing to find anything...
return r
r.rawTx = gr.rawTx!
}
const gmpr = await services.getMerklePath(txid)
if (gmpr.merklePath && gmpr.header) {
const index = gmpr.merklePath.path[0].find(l => l.hash === txid)?.offset
if (index !== undefined) {
const api: table.ProvenTx = {
created_at: new Date(),
updated_at: new Date(),
provenTxId: 0,
txid,
height: gmpr.header.height,
index,
merklePath: gmpr.merklePath.toBinary(),
rawTx: r.rawTx,
blockHash: gmpr.header.hash,
merkleRoot: gmpr.header.merkleRoot
}
r.proven = new ProvenTx(api)
}
}
return r
}
constructor(api?: table.ProvenTx) {
const now = new Date()
super(api || {
provenTxId: 0,
created_at: now,
updated_at: now,
txid: '',
height: 0,
index: 0,
merklePath: [],
rawTx: [],
blockHash: '',
merkleRoot: ''
})
}
override updateApi(): void {
/* nothing needed yet... */
}
/**
* @returns desirialized `MerklePath` object, value is cached.
*/
getMerklePath() : MerklePath { if (!this._mp) this._mp = MerklePath.fromBinary(this.api.merklePath); return this._mp }
_mp?: MerklePath
get provenTxId() { return this.api.provenTxId }
set provenTxId(v: number) { this.api.provenTxId = v }
get created_at() { return this.api.created_at }
set created_at(v: Date) { this.api.created_at = v }
get updated_at() { return this.api.updated_at }
set updated_at(v: Date) { this.api.updated_at = v }
get txid() { return this.api.txid }
set txid(v: string) { this.api.txid = v }
get height() { return this.api.height }
set height(v: number) { this.api.height = v }
get index() { return this.api.index }
set index(v: number) { this.api.index = v }
get merklePath() { return this.api.merklePath }
set merklePath(v: number[]) { this.api.merklePath = v }
get rawTx() { return this.api.rawTx }
set rawTx(v: number[]) { this.api.rawTx = v }
get blockHash() { return this.api.blockHash }
set blockHash(v: string) { this.api.blockHash = v }
get merkleRoot() { return this.api.merkleRoot }
set merkleRoot(v: string) { this.api.merkleRoot = v }
override get id() { return this.api.provenTxId }
override set id(v: number) { this.api.provenTxId = v }
override get entityName(): string { return 'ProvenTx' }
override get entityTable(): string { return 'proven_txs' }
override equals(ei: table.ProvenTx, syncMap?: entity.SyncMap | undefined): boolean {
const eo = this.toApi()
if (
eo.txid != ei.txid ||
eo.height != ei.height ||
eo.index != ei.index ||
!arraysEqual(eo.merklePath,ei.merklePath) ||
!arraysEqual(eo.rawTx, ei.rawTx) ||
eo.blockHash !== ei.blockHash ||
eo.merkleRoot !== ei.merkleRoot
// equality does not depend on timestamps.
// || eo.created_at !== ei.created_at
// || eo.updated_at !== ei.updated_at
)
return false
if (syncMap) {
if (eo.provenTxId !== syncMap.provenTx.idMap[ei.provenTxId])
return false
} else {
if ( eo.provenTxId !== ei.provenTxId)
return false
}
return true
}
static async mergeFind(storage: entity.EntityStorage, userId: number, ei: table.ProvenTx, syncMap: entity.SyncMap, trx?: sdk.TrxToken)
: Promise<{ found: boolean, eo: entity.ProvenTx, eiId: number }> {
const ef = verifyOneOrNone(await storage.findProvenTxs({ partial: { txid: ei.txid }, trx }))
return {
found: !!ef,
eo: new ProvenTx(ef || { ...ei }),
eiId: verifyId(ei.provenTxId)
}
}
override async mergeNew(storage: entity.EntityStorage, userId: number, syncMap: entity.SyncMap, trx?: sdk.TrxToken): Promise<void> {
this.provenTxId = 0
// TODO: Since these records are a shared resource, the record must be validated before accepting it...
this.provenTxId = await storage.insertProvenTx(this.toApi(), trx)
}
override async mergeExisting(storage: entity.EntityStorage, since: Date | undefined, ei: table.ProvenTx, syncMap: entity.SyncMap, trx?: sdk.TrxToken): Promise<boolean> {
// ProvenTxs are never updated.
return false
}
/**
* How high attempts can go before status is forced to invalid
*/
static getProofAttemptsLimit = 8
/**
* How many hours we have to try for a poof
*/
static getProofMinutes = 60
/**
* Try to create a new ProvenTx from a ProvenTxReq and GetMerkleProofResultApi
*
* Otherwise it returns undefined and updates req.status to either 'unknown', 'invalid', or 'unconfirmed'
*
* @param req
* @param gmpResult
* @returns
*/
static async fromReq(
req: entity.ProvenTxReq,
gmpResult: sdk.GetMerklePathResult,
countsAsAttempt: boolean
)
: Promise<ProvenTx | undefined>
{
Iif (!req.txid) throw new sdk.WERR_MISSING_PARAMETER('req.txid')
Iif (!req.rawTx) throw new sdk.WERR_MISSING_PARAMETER('req.rawTx')
Iif (!req.rawTx) throw new sdk.WERR_INTERNAL('rawTx must be valid')
req.addHistoryNote({ what: 'getMerkleProof result', result: gmpResult, attempts: req.attempts })
if (!gmpResult.name && !gmpResult.merklePath && !gmpResult.error) {
// Most likely offline or now services configured.
// Does not count as a proof attempt.
return undefined
}
Iif (!gmpResult.merklePath) {
Iif (req.created_at) {
const reqAgeInMsecs = Date.now() - req.created_at.getTime()
const reqAgeInMinutes = Math.ceil(reqAgeInMsecs < 1 ? 0 : reqAgeInMsecs / (1000 * 60))
Iif (req.attempts > entity.ProvenTx.getProofAttemptsLimit && reqAgeInMinutes > entity.ProvenTx.getProofMinutes) {
// Start the process of setting transactions to 'failed'
req.addHistoryNote({ what: 'getMerkleProof invalid', attempts: req.attempts, ageInMinutes: reqAgeInMinutes })
req.notified = false
req.status = 'invalid'
}
}
return undefined
}
Iif (countsAsAttempt)
req.attempts++
const merklePaths = (Array.isArray(gmpResult.merklePath)) ? gmpResult.merklePath : [gmpResult.merklePath]
for (const proof of merklePaths) {
try {
const now = new Date()
const leaf = proof.path[0].find(leaf => leaf.txid === true && leaf.hash === req.txid)
Iif (!leaf) throw new sdk.WERR_INTERNAL('merkle path does not contain leaf for txid')
const proven = new ProvenTx({
created_at: now,
updated_at: now,
provenTxId: 0,
txid: req.txid,
height: proof.blockHeight,
index: leaf.offset,
merklePath: proof.toBinary(),
rawTx: req.rawTx,
merkleRoot: gmpResult.header!.merkleRoot,
blockHash: gmpResult.header!.hash
})
return proven
} catch (err: unknown) {
req.addHistoryNote({
what: "getMerkleProof catch",
proof,
error: sdk.WalletError.fromUnknown(err)
})
}
}
}
}
export interface ProvenTxFromTxidResult {
proven?: entity.ProvenTx
rawTx?: number[]
} |