// HARDFORK 21,000
//
// TestPreForkValidStorageProofs checks that storage proofs which are invalid
// before the hardfork (but valid afterwards) are still rejected before the
// hardfork).
func TestPreForkValidStorageProofs(t *testing.T) {
if testing.Short() {
t.SkipNow()
}
t.Parallel()
cst, err := createConsensusSetTester("TestPreForkValidStorageProofs")
if err != nil {
t.Fatal(err)
}
defer cst.Close()
// Try a proof set where there is padding on the last segment in the file.
file := make([]byte, 100)
_, err = rand.Read(file)
if err != nil {
t.Fatal(err)
}
root := crypto.MerkleRoot(file)
fc := types.FileContract{
FileSize: 100,
FileMerkleRoot: root,
Payout: types.NewCurrency64(1),
WindowStart: 2,
WindowEnd: 1200,
}
// Find a proofIndex that has the value '1'.
var fcid types.FileContractID
var proofIndex uint64
for {
fcid[0]++
cst.cs.dbAddFileContract(fcid, fc)
proofIndex, err = cst.cs.dbStorageProofSegment(fcid)
if err != nil {
t.Fatal(err)
}
if proofIndex == 1 {
break
}
}
base, proofSet := crypto.MerkleProof(file, proofIndex)
txn := types.Transaction{
StorageProofs: []types.StorageProof{{
ParentID: fcid,
HashSet: proofSet,
}},
}
copy(txn.StorageProofs[0].Segment[:], base)
err = cst.cs.dbValidStorageProofs(txn)
if err != errInvalidStorageProof {
t.Log(cst.cs.dbBlockHeight())
t.Fatal(err)
}
}
// TestStorageProofBoundaries creates file contracts and submits storage proofs
// for them, probing segment boundaries (first segment, last segment,
// incomplete segment, etc.).
func TestStorageProofBoundaries(t *testing.T) {
if testing.Short() {
t.SkipNow()
}
t.Parallel()
cst, err := createConsensusSetTester("TestStorageProofBoundaries")
if err != nil {
t.Fatal(err)
}
defer cst.Close()
// Mine enough blocks to put us beyond the testing hardfork.
for i := 0; i < 10; i++ {
_, err = cst.miner.AddBlock()
if err != nil {
t.Fatal(err)
}
}
// Try storage proofs on data between 0 bytes and 128 bytes (0 segments and
// 1 segment). Perform the operation five times because we can't control
// which segment gets selected - it is randomly decided by the block.
segmentRange := []int{0, 1, 2, 3, 4, 5, 15, 25, 30, 32, 62, 63, 64, 65, 66, 70, 81, 89, 90, 126, 127, 128, 129}
for i := 0; i < 3; i++ {
randData, err := crypto.RandBytes(140)
if err != nil {
t.Fatal(err)
}
// Create a file contract for all sizes of the data between 0 and 2
// segments and put them in the transaction pool.
var fcids []types.FileContractID
for _, k := range segmentRange {
// Create the data and the file contract around it.
truncatedData := randData[:k]
fc := types.FileContract{
FileSize: uint64(k),
FileMerkleRoot: crypto.MerkleRoot(truncatedData),
WindowStart: cst.cs.dbBlockHeight() + 2,
WindowEnd: cst.cs.dbBlockHeight() + 4,
Payout: types.NewCurrency64(500), // Too small to be subject to siafund fee.
ValidProofOutputs: []types.SiacoinOutput{{Value: types.NewCurrency64(500)}},
MissedProofOutputs: []types.SiacoinOutput{{Value: types.NewCurrency64(500)}},
}
// Create a transaction around the file contract and add it to the
// transaction pool.
b := cst.wallet.StartTransaction()
err = b.FundSiacoins(types.NewCurrency64(500))
if err != nil {
t.Fatal(err)
}
b.AddFileContract(fc)
txnSet, err := b.Sign(true)
if err != nil {
t.Fatal(err)
}
err = cst.tpool.AcceptTransactionSet(txnSet)
if err != nil {
t.Fatal(err)
}
// Store the file contract id for later when building the storage
// proof.
fcids = append(fcids, txnSet[len(txnSet)-1].FileContractID(0))
}
// Mine blocks to get the file contracts into the blockchain and
// confirming.
for j := 0; j < 2; j++ {
_, err = cst.miner.AddBlock()
if err != nil {
t.Fatal(err)
}
}
// Create storage proofs for the file contracts and submit the proofs
// to the blockchain.
for j, k := range segmentRange {
// Build the storage proof.
truncatedData := randData[:k]
proofIndex, err := cst.cs.StorageProofSegment(fcids[j])
if err != nil {
t.Fatal(err)
}
base, hashSet := crypto.MerkleProof(truncatedData, proofIndex)
sp := types.StorageProof{
ParentID: fcids[j],
HashSet: hashSet,
}
copy(sp.Segment[:], base)
if k > 0 {
// Try submitting an empty storage proof, to make sure that the
// hardfork code didn't accidentally allow empty storage proofs
// in situations other than file sizes with 0 bytes.
badSP := types.StorageProof{ParentID: fcids[j]}
badTxn := types.Transaction{
StorageProofs: []types.StorageProof{badSP},
}
if sp.Segment == badSP.Segment {
continue
}
err = cst.tpool.AcceptTransactionSet([]types.Transaction{badTxn})
if err == nil {
t.Fatal("An empty storage proof got into the transaction pool with non-empty data")
}
}
// Submit the storage proof to the blockchain in a transaction.
txn := types.Transaction{
StorageProofs: []types.StorageProof{sp},
}
err = cst.tpool.AcceptTransactionSet([]types.Transaction{txn})
if err != nil {
t.Fatal(err, "-", j, k)
}
}
// Mine blocks to get the storage proofs on the blockchain.
for j := 0; j < 2; j++ {
_, err = cst.miner.AddBlock()
if err != nil {
t.Fatal(err)
}
}
}
}
// TestValidStorageProofs probes the validStorageProofs method of the consensus
// set.
func TestValidStorageProofs(t *testing.T) {
if testing.Short() {
t.SkipNow()
}
t.Parallel()
cst, err := createConsensusSetTester("TestValidStorageProofs")
if err != nil {
t.Fatal(err)
}
defer cst.Close()
// COMPATv0.4.0
//
// Mine 10 blocks so that the post-hardfork rules are in effect.
for i := 0; i < 10; i++ {
block, _ := cst.miner.FindBlock()
err = cst.cs.AcceptBlock(block)
if err != nil {
t.Fatal(err)
}
}
// Create a file contract for which a storage proof can be created.
var fcid types.FileContractID
fcid[0] = 12
simFile := make([]byte, 64*1024)
_, err = rand.Read(simFile)
if err != nil {
t.Fatal(err)
}
root := crypto.MerkleRoot(simFile)
fc := types.FileContract{
FileSize: 64 * 1024,
FileMerkleRoot: root,
Payout: types.NewCurrency64(1),
WindowStart: 2,
WindowEnd: 1200,
}
cst.cs.dbAddFileContract(fcid, fc)
// Create a transaction with a storage proof.
proofIndex, err := cst.cs.dbStorageProofSegment(fcid)
if err != nil {
t.Fatal(err)
}
base, proofSet := crypto.MerkleProof(simFile, proofIndex)
txn := types.Transaction{
StorageProofs: []types.StorageProof{{
ParentID: fcid,
HashSet: proofSet,
}},
}
copy(txn.StorageProofs[0].Segment[:], base)
err = cst.cs.dbValidStorageProofs(txn)
if err != nil {
t.Error(err)
}
// Corrupt the proof set.
proofSet[0][0]++
txn = types.Transaction{
StorageProofs: []types.StorageProof{{
ParentID: fcid,
HashSet: proofSet,
}},
}
copy(txn.StorageProofs[0].Segment[:], base)
err = cst.cs.dbValidStorageProofs(txn)
if err != errInvalidStorageProof {
t.Error(err)
}
// Try to validate a proof for a file contract that doesn't exist.
txn.StorageProofs[0].ParentID = types.FileContractID{}
err = cst.cs.dbValidStorageProofs(txn)
if err != errUnrecognizedFileContractID {
t.Error(err)
}
// Try a proof set where there is padding on the last segment in the file.
file := make([]byte, 100)
_, err = rand.Read(file)
if err != nil {
t.Fatal(err)
}
root = crypto.MerkleRoot(file)
fc = types.FileContract{
FileSize: 100,
FileMerkleRoot: root,
Payout: types.NewCurrency64(1),
WindowStart: 2,
WindowEnd: 1200,
}
// Find a proofIndex that has the value '1'.
for {
fcid[0]++
cst.cs.dbAddFileContract(fcid, fc)
proofIndex, err = cst.cs.dbStorageProofSegment(fcid)
if err != nil {
t.Fatal(err)
}
if proofIndex == 1 {
break
}
}
base, proofSet = crypto.MerkleProof(file, proofIndex)
txn = types.Transaction{
StorageProofs: []types.StorageProof{{
ParentID: fcid,
HashSet: proofSet,
}},
}
copy(txn.StorageProofs[0].Segment[:], base)
err = cst.cs.dbValidStorageProofs(txn)
if err != nil {
t.Fatal(err)
}
}
// threadedHandleActionItem will look at a storage obligation and determine
// which action is necessary for the storage obligation to succeed.
func (h *Host) threadedHandleActionItem(soid types.FileContractID, wg *sync.WaitGroup) {
// The calling thread is responsible for calling Add to the thread group.
defer wg.Done()
// Lock the storage obligation in question.
h.managedLockStorageObligation(soid)
defer func() {
h.managedUnlockStorageObligation(soid)
}()
// Convert the storage obligation id into a storage obligation.
var err error
var so storageObligation
h.mu.RLock()
blockHeight := h.blockHeight
err = h.db.View(func(tx *bolt.Tx) error {
so, err = getStorageObligation(tx, soid)
return err
})
h.mu.RUnlock()
if err != nil {
h.log.Println("Could not get storage obligation:", err)
return
}
// Check whether the storage obligation has already been completed.
if so.ObligationStatus != obligationUnresolved {
// Storage obligation has already been completed, skip action item.
return
}
// Check whether the file contract has been seen. If not, resubmit and
// queue another action item. Check for death. (signature should have a
// kill height)
if !so.OriginConfirmed {
// Submit the transaction set again, try to get the transaction
// confirmed.
err := h.tpool.AcceptTransactionSet(so.OriginTransactionSet)
if err != nil {
h.log.Debugln("Could not get origin transaction set accepted", err)
// Check if the transaction is invalid with the current consensus set.
// If so, the transaction is highly unlikely to ever be confirmed, and
// the storage obligation should be removed. This check should come
// after logging the errror so that the function can quit.
//
// TODO: If the host or tpool is behind consensus, might be difficult
// to have certainty about the issue. If some but not all of the
// parents are confirmed, might be some difficulty.
_, t := err.(modules.ConsensusConflict)
if t {
h.log.Println("Consensus conflict on the origin transaction set, id", so.id())
h.mu.Lock()
err = h.removeStorageObligation(so, obligationRejected)
h.mu.Unlock()
if err != nil {
h.log.Println("Error removing storage obligation:", err)
}
return
}
}
// Queue another action item to check the status of the transaction.
h.mu.Lock()
err = h.queueActionItem(h.blockHeight+resubmissionTimeout, so.id())
h.mu.Unlock()
if err != nil {
h.log.Println("Error queuing action item:", err)
}
}
// Check if the file contract revision is ready for submission. Check for death.
if !so.RevisionConfirmed && len(so.RevisionTransactionSet) > 0 && blockHeight > so.expiration()-revisionSubmissionBuffer {
// Sanity check - there should be a file contract revision.
rtsLen := len(so.RevisionTransactionSet)
if rtsLen < 1 || len(so.RevisionTransactionSet[rtsLen-1].FileContractRevisions) != 1 {
h.log.Critical("transaction revision marked as unconfirmed, yet there is no transaction revision")
return
}
// Check if the revision has failed to submit correctly.
if blockHeight > so.expiration() {
// TODO: Check this error.
//
// TODO: this is not quite right, because a previous revision may
// be confirmed, and the origin transaction may be confirmed, which
// would confuse the revenue stuff a bit. Might happen frequently
// due to the dynamic fee pool.
h.log.Println("Full time has elapsed, but the revision transaction could not be submitted to consensus, id", so.id())
h.mu.Lock()
h.removeStorageObligation(so, obligationRejected)
h.mu.Unlock()
return
}
// Queue another action item to check the status of the transaction.
h.mu.Lock()
err := h.queueActionItem(blockHeight+resubmissionTimeout, so.id())
h.mu.Unlock()
if err != nil {
h.log.Println("Error queuing action item:", err)
}
// Add a miner fee to the transaction and submit it to the blockchain.
revisionTxnIndex := len(so.RevisionTransactionSet) - 1
revisionParents := so.RevisionTransactionSet[:revisionTxnIndex]
revisionTxn := so.RevisionTransactionSet[revisionTxnIndex]
builder := h.wallet.RegisterTransaction(revisionTxn, revisionParents)
_, feeRecommendation := h.tpool.FeeEstimation()
if so.value().Div64(2).Cmp(feeRecommendation) < 0 {
// There's no sense submitting the revision if the fee is more than
// half of the anticipated revenue - fee market went up
// unexpectedly, and the money that the renter paid to cover the
// fees is no longer enough.
return
}
txnSize := uint64(len(encoding.MarshalAll(so.RevisionTransactionSet)) + 300)
requiredFee := feeRecommendation.Mul64(txnSize)
err = builder.FundSiacoins(requiredFee)
if err != nil {
h.log.Println("Error funding transaction fees", err)
}
builder.AddMinerFee(requiredFee)
if err != nil {
h.log.Println("Error adding miner fees", err)
}
feeAddedRevisionTransactionSet, err := builder.Sign(true)
if err != nil {
h.log.Println("Error signing transaction", err)
}
err = h.tpool.AcceptTransactionSet(feeAddedRevisionTransactionSet)
if err != nil {
h.log.Println("Error submitting transaction to transaction pool", err)
}
so.TransactionFeesAdded = so.TransactionFeesAdded.Add(requiredFee)
// return
}
// Check whether a storage proof is ready to be provided, and whether it
// has been accepted. Check for death.
if !so.ProofConfirmed && blockHeight >= so.expiration()+resubmissionTimeout {
h.log.Debugln("Host is attempting a storage proof for", so.id())
// If the window has closed, the host has failed and the obligation can
// be removed.
if so.proofDeadline() < blockHeight || len(so.SectorRoots) == 0 {
h.log.Debugln("storage proof not confirmed by deadline, id", so.id())
h.mu.Lock()
err := h.removeStorageObligation(so, obligationFailed)
h.mu.Unlock()
if err != nil {
h.log.Println("Error removing storage obligation:", err)
}
return
}
// Get the index of the segment, and the index of the sector containing
// the segment.
segmentIndex, err := h.cs.StorageProofSegment(so.id())
if err != nil {
h.log.Debugln("Host got an error when fetching a storage proof segment:", err)
return
}
sectorIndex := segmentIndex / (modules.SectorSize / crypto.SegmentSize)
// Pull the corresponding sector into memory.
sectorRoot := so.SectorRoots[sectorIndex]
sectorBytes, err := h.ReadSector(sectorRoot)
if err != nil {
h.log.Debugln(err)
return
}
// Build the storage proof for just the sector.
sectorSegment := segmentIndex % (modules.SectorSize / crypto.SegmentSize)
base, cachedHashSet := crypto.MerkleProof(sectorBytes, sectorSegment)
// Using the sector, build a cached root.
log2SectorSize := uint64(0)
for 1<<log2SectorSize < (modules.SectorSize / crypto.SegmentSize) {
log2SectorSize++
}
ct := crypto.NewCachedTree(log2SectorSize)
ct.SetIndex(segmentIndex)
for _, root := range so.SectorRoots {
ct.Push(root)
}
hashSet := ct.Prove(base, cachedHashSet)
sp := types.StorageProof{
ParentID: so.id(),
HashSet: hashSet,
}
copy(sp.Segment[:], base)
// Create and build the transaction with the storage proof.
builder := h.wallet.StartTransaction()
_, feeRecommendation := h.tpool.FeeEstimation()
if so.value().Cmp(feeRecommendation) < 0 {
// There's no sense submitting the storage proof if the fee is more
// than the anticipated revenue.
h.log.Debugln("Host not submitting storage proof due to a value that does not sufficiently exceed the fee cost")
return
}
txnSize := uint64(len(encoding.Marshal(sp)) + 300)
requiredFee := feeRecommendation.Mul64(txnSize)
err = builder.FundSiacoins(requiredFee)
if err != nil {
h.log.Println("Host error when funding a storage proof transaction fee:", err)
return
}
builder.AddMinerFee(requiredFee)
builder.AddStorageProof(sp)
storageProofSet, err := builder.Sign(true)
if err != nil {
h.log.Println("Host error when signing the storage proof transaction:", err)
return
}
err = h.tpool.AcceptTransactionSet(storageProofSet)
if err != nil {
h.log.Println("Host unable to submit storage proof transaction to transaction pool:", err)
return
}
so.TransactionFeesAdded = so.TransactionFeesAdded.Add(requiredFee)
// Queue another action item to check whether there the storage proof
// got confirmed.
h.mu.Lock()
err = h.queueActionItem(so.proofDeadline(), so.id())
h.mu.Unlock()
if err != nil {
h.log.Println("Error queuing action item:", err)
}
}
// Save the storage obligation to account for any fee changes.
err = h.db.Update(func(tx *bolt.Tx) error {
soBytes, err := json.Marshal(so)
if err != nil {
return err
}
return tx.Bucket(bucketStorageObligations).Put(soid[:], soBytes)
})
if err != nil {
h.log.Println("Error updating the storage obligations", err)
}
// Check if all items have succeeded with the required confirmations. Report
// success, delete the obligation.
if so.ProofConfirmed && blockHeight >= so.proofDeadline() {
h.log.Println("file contract complete, id", so.id())
h.mu.Lock()
h.removeStorageObligation(so, obligationSucceeded)
h.mu.Unlock()
}
}
// testFileContractRevision creates and revises a file contract on the
// blockchain.
func (cst *consensusSetTester) testFileContractRevision() {
// COMPATv0.4.0 - Step the block height up past the hardfork amount. This
// code stops nondeterministic failures when producing storage proofs that
// is related to buggy old code.
for cst.cs.dbBlockHeight() <= 10 {
_, err := cst.miner.AddBlock()
if err != nil {
panic(err)
}
}
// Create a file (as a bytes.Buffer) that will be used for the file
// contract.
filesize := uint64(4e3)
file, err := crypto.RandBytes(int(filesize))
if err != nil {
panic(err)
}
merkleRoot := crypto.MerkleRoot(file)
// Create a spendable unlock hash for the file contract.
sk, pk, err := crypto.GenerateKeyPair()
if err != nil {
panic(err)
}
uc := types.UnlockConditions{
PublicKeys: []types.SiaPublicKey{{
Algorithm: types.SignatureEd25519,
Key: pk[:],
}},
SignaturesRequired: 1,
}
// Create a file contract that will be revised.
validProofDest := randAddress()
payout := types.NewCurrency64(400e6)
fc := types.FileContract{
FileSize: filesize,
FileMerkleRoot: crypto.Hash{},
WindowStart: cst.cs.dbBlockHeight() + 2,
WindowEnd: cst.cs.dbBlockHeight() + 3,
Payout: payout,
ValidProofOutputs: []types.SiacoinOutput{{
UnlockHash: validProofDest,
Value: types.PostTax(cst.cs.dbBlockHeight(), payout),
}},
MissedProofOutputs: []types.SiacoinOutput{{
UnlockHash: types.UnlockHash{},
Value: types.PostTax(cst.cs.dbBlockHeight(), payout),
}},
UnlockHash: uc.UnlockHash(),
}
// Submit a transaction with the file contract.
txnBuilder := cst.wallet.StartTransaction()
err = txnBuilder.FundSiacoins(payout)
if err != nil {
panic(err)
}
fcIndex := txnBuilder.AddFileContract(fc)
txnSet, err := txnBuilder.Sign(true)
if err != nil {
panic(err)
}
err = cst.tpool.AcceptTransactionSet(txnSet)
if err != nil {
panic(err)
}
_, err = cst.miner.AddBlock()
if err != nil {
panic(err)
}
// Submit a revision for the file contract.
ti := len(txnSet) - 1
fcid := txnSet[ti].FileContractID(fcIndex)
fcr := types.FileContractRevision{
ParentID: fcid,
UnlockConditions: uc,
NewRevisionNumber: 69292,
NewFileSize: filesize,
NewFileMerkleRoot: merkleRoot,
NewWindowStart: cst.cs.dbBlockHeight() + 1,
NewWindowEnd: cst.cs.dbBlockHeight() + 2,
NewValidProofOutputs: fc.ValidProofOutputs,
NewMissedProofOutputs: fc.MissedProofOutputs,
NewUnlockHash: uc.UnlockHash(),
}
ts := types.TransactionSignature{
ParentID: crypto.Hash(fcid),
CoveredFields: types.CoveredFields{WholeTransaction: true},
PublicKeyIndex: 0,
}
txn := types.Transaction{
FileContractRevisions: []types.FileContractRevision{fcr},
TransactionSignatures: []types.TransactionSignature{ts},
}
encodedSig, err := crypto.SignHash(txn.SigHash(0), sk)
if err != nil {
panic(err)
}
txn.TransactionSignatures[0].Signature = encodedSig[:]
err = cst.tpool.AcceptTransactionSet([]types.Transaction{txn})
if err != nil {
panic(err)
}
_, err = cst.miner.AddBlock()
if err != nil {
panic(err)
}
// Create and submit a storage proof for the file contract.
segmentIndex, err := cst.cs.StorageProofSegment(fcid)
if err != nil {
panic(err)
}
segment, hashSet := crypto.MerkleProof(file, segmentIndex)
sp := types.StorageProof{
ParentID: fcid,
HashSet: hashSet,
}
copy(sp.Segment[:], segment)
txnBuilder = cst.wallet.StartTransaction()
txnBuilder.AddStorageProof(sp)
txnSet, err = txnBuilder.Sign(true)
if err != nil {
panic(err)
}
err = cst.tpool.AcceptTransactionSet(txnSet)
if err != nil {
panic(err)
}
_, err = cst.miner.AddBlock()
if err != nil {
panic(err)
}
// Check that the file contract has been removed.
_, err = cst.cs.dbGetFileContract(fcid)
if err != errNilItem {
panic("file contract should not exist in the database")
}
}
// testValidStorageProofBlocks adds a block with a file contract, and then
// submits a storage proof for that file contract.
func (cst *consensusSetTester) testValidStorageProofBlocks() {
// COMPATv0.4.0 - Step the block height up past the hardfork amount. This
// code stops nondeterministic failures when producing storage proofs that
// is related to buggy old code.
for cst.cs.dbBlockHeight() <= 10 {
_, err := cst.miner.AddBlock()
if err != nil {
panic(err)
}
}
// Create a file (as a bytes.Buffer) that will be used for the file
// contract.
filesize := uint64(4e3)
file, err := crypto.RandBytes(int(filesize))
if err != nil {
panic(err)
}
merkleRoot := crypto.MerkleRoot(file)
// Create a file contract that will be successful.
validProofDest := randAddress()
payout := types.NewCurrency64(400e6)
fc := types.FileContract{
FileSize: filesize,
FileMerkleRoot: merkleRoot,
WindowStart: cst.cs.dbBlockHeight() + 1,
WindowEnd: cst.cs.dbBlockHeight() + 2,
Payout: payout,
ValidProofOutputs: []types.SiacoinOutput{{
UnlockHash: validProofDest,
Value: types.PostTax(cst.cs.dbBlockHeight(), payout),
}},
MissedProofOutputs: []types.SiacoinOutput{{
UnlockHash: types.UnlockHash{},
Value: types.PostTax(cst.cs.dbBlockHeight(), payout),
}},
}
// Submit a transaction with the file contract.
oldSiafundPool := cst.cs.dbGetSiafundPool()
txnBuilder := cst.wallet.StartTransaction()
err = txnBuilder.FundSiacoins(payout)
if err != nil {
panic(err)
}
fcIndex := txnBuilder.AddFileContract(fc)
txnSet, err := txnBuilder.Sign(true)
if err != nil {
panic(err)
}
err = cst.tpool.AcceptTransactionSet(txnSet)
if err != nil {
panic(err)
}
_, err = cst.miner.AddBlock()
if err != nil {
panic(err)
}
// Check that the siafund pool was increased by the tax on the payout.
siafundPool := cst.cs.dbGetSiafundPool()
if siafundPool.Cmp(oldSiafundPool.Add(types.Tax(cst.cs.dbBlockHeight()-1, payout))) != 0 {
panic("siafund pool was not increased correctly")
}
// Check that the file contract made it into the database.
ti := len(txnSet) - 1
fcid := txnSet[ti].FileContractID(fcIndex)
_, err = cst.cs.dbGetFileContract(fcid)
if err != nil {
panic(err)
}
// Create and submit a storage proof for the file contract.
segmentIndex, err := cst.cs.StorageProofSegment(fcid)
if err != nil {
panic(err)
}
segment, hashSet := crypto.MerkleProof(file, segmentIndex)
sp := types.StorageProof{
ParentID: fcid,
HashSet: hashSet,
}
copy(sp.Segment[:], segment)
txnBuilder = cst.wallet.StartTransaction()
txnBuilder.AddStorageProof(sp)
txnSet, err = txnBuilder.Sign(true)
if err != nil {
panic(err)
}
err = cst.tpool.AcceptTransactionSet(txnSet)
if err != nil {
panic(err)
}
_, err = cst.miner.AddBlock()
if err != nil {
panic(err)
}
// Check that the file contract has been removed.
_, err = cst.cs.dbGetFileContract(fcid)
if err != errNilItem {
panic("file contract should not exist in the database")
}
// Check that the siafund pool has not changed.
postProofPool := cst.cs.dbGetSiafundPool()
if postProofPool.Cmp(siafundPool) != 0 {
panic("siafund pool should not change after submitting a storage proof")
}
// Check that a delayed output was created for the valid proof.
spoid := fcid.StorageProofOutputID(types.ProofValid, 0)
dsco, err := cst.cs.dbGetDSCO(cst.cs.dbBlockHeight()+types.MaturityDelay, spoid)
if err != nil {
panic(err)
}
if dsco.UnlockHash != fc.ValidProofOutputs[0].UnlockHash {
panic("wrong unlock hash in dsco")
}
if dsco.Value.Cmp(fc.ValidProofOutputs[0].Value) != 0 {
panic("wrong sco value in dsco")
}
}
