fixed issue with untouched child nodes needing a parent update

src/claimscriptop.cpp

@@ -15,7 +15,7 @@ bool CClaimScriptAddOp::claimName(CClaimTrieCache& trieCache, const std::string&
         const std::vector<unsigned char>& metadata)
 {
     auto claimId = ClaimIdHash(point.hash, point.n);
-    LogPrint(BCLog::CLAIMS, "+++ Claim added: %s, c: %.6s, t: %.6s:%d, h: %.6d, a: %du\n",
+    LogPrint(BCLog::CLAIMS, "+++ Claim added: %s, c: %.6s, t: %.6s:%d, h: %.6d, a: %d\n",
                             name, claimId.GetHex(), point.hash.GetHex(), point.n, nHeight, nValue);
     return addClaim(trieCache, name, claimId, -1, metadata);
 }
@@ -23,7 +23,7 @@ bool CClaimScriptAddOp::claimName(CClaimTrieCache& trieCache, const std::string&
 bool CClaimScriptAddOp::updateClaim(CClaimTrieCache& trieCache, const std::string& name, const uint160& claimId,
         const std::vector<unsigned char>& metadata)
 {
-    LogPrint(BCLog::CLAIMS, "+++ Claim updated: %s, c: %.6s, t: %.6s:%d, h: %.6d, a: %du\n",
+    LogPrint(BCLog::CLAIMS, "+++ Claim updated: %s, c: %.6s, t: %.6s:%d, h: %.6d, a: %d\n",
              name, claimId.GetHex(), point.hash.GetHex(), point.n, nHeight, nValue);
     return addClaim(trieCache, name, claimId, -1, metadata);
 }
@@ -37,7 +37,7 @@ bool CClaimScriptAddOp::addClaim(CClaimTrieCache& trieCache, const std::string&
 bool CClaimScriptAddOp::supportClaim(CClaimTrieCache& trieCache, const std::string& name, const uint160& claimId,
                                      const std::vector<unsigned char>& metadata)
 {
-    LogPrint(BCLog::CLAIMS, "+++ Support added: %s, c: %.6s, t: %.6s:%d, h: %.6d, a: %du\n",
+    LogPrint(BCLog::CLAIMS, "+++ Support added: %s, c: %.6s, t: %.6s:%d, h: %.6d, a: %d\n",
              name, claimId.GetHex(), point.hash.GetHex(), point.n, nHeight, nValue);
     return trieCache.addSupport(name, point, nValue, claimId, nHeight, -1, metadata);
 }

src/claimtrie.cpp

@@ -99,6 +99,8 @@ CClaimTrieCacheBase::~CClaimTrieCacheBase() {
         db << "rollback";
         transacting = false;
     }
+    claimHashQuery.used(true);
+    childHashQuery.used(true);
 }
 
 bool CClaimTrie::SyncToDisk()
@@ -234,6 +236,12 @@ void CClaimTrieCacheBase::ensureTreeStructureIsUpToDate() {
                               "SELECT SUBSTR(p, 1, LENGTH(p)-1) FROM prefix WHERE p != '') SELECT p FROM prefix) "
                               "ORDER BY name DESC LIMIT 1";
 
+    auto insertQuery = db << "INSERT INTO nodes(name, parent, hash) VALUES(?, ?, NULL) "
+                             "ON CONFLICT(name) DO UPDATE SET parent = excluded.parent, hash = NULL";
+
+    auto updateUnaffectedsQuery = db << "UPDATE nodes SET parent = ? WHERE name LIKE ? AND LENGTH(parent) < ?";
+
+
     for (auto& name: names) {
         std::vector<std::string> claims;
         std::string parent;
@@ -273,26 +281,43 @@ void CClaimTrieCacheBase::ensureTreeStructureIsUpToDate() {
                     break;
                 }
                 // insert the split node:
-                LogPrint(BCLog::CLAIMS, "Inserting split node %s, parent %s\n", newNodeName, parent);
+                LogPrint(BCLog::CLAIMS, "Inserting split node %s near %s, parent %s\n", newNodeName, sibling, parent);
-                db << "INSERT INTO nodes(name, parent, hash) VALUES(?, ?, NULL) "
+                insertQuery << newNodeName << parent;
-                       "ON CONFLICT(name) DO UPDATE SET parent = excluded.parent, hash = NULL"
+                insertQuery++;
-                    << newNodeName << parent;
+
+                if (newNodeName.find('_') == std::string::npos && newNodeName.find('%') == std::string::npos) {
+                    updateUnaffectedsQuery << newNodeName << newNodeName + "_%" << newNodeName.size();
+                    updateUnaffectedsQuery++;
+                }
+                else
+                    db << "UPDATE nodes SET parent = ?1 WHERE SUBSTR(name, 1, ?2) = ?1 AND LENGTH(parent) < ?2 AND name != ?1"
+                       << newNodeName << newNodeName.size();
+
+
                 parent = std::move(newNodeName);
                 break;
             }
         }
 
         LogPrint(BCLog::CLAIMS, "Inserting or updating node %s, parent %s\n", name, parent);
-        db << "INSERT INTO nodes(name, parent, hash) VALUES(?, ?, NULL) "
+        insertQuery << name << parent;
-               "ON CONFLICT(name) DO UPDATE SET parent = excluded.parent, hash = NULL"
+        insertQuery++;
-            << name << parent;
         if (splitPos == 0)
             db << "UPDATE nodes SET hash = NULL WHERE name = ?" << parent;
 
+        if (name.find('_') == std::string::npos && name.find('%') == std::string::npos) {
+            updateUnaffectedsQuery << name << name + "_%" << name.size();
+            updateUnaffectedsQuery++;
+        }
+        else
             db << "UPDATE nodes SET parent = ?1 WHERE SUBSTR(name, 1, ?2) = ?1 AND LENGTH(parent) < ?2 AND name != ?1"
                 << name << name.size();
     }
 
+    parentQuery.used(true);
+    insertQuery.used(true);
+    updateUnaffectedsQuery.used(true);
+
     // now we need to percolate the nulls up the tree
     // parents should all be set right
     db << "UPDATE nodes SET hash = NULL WHERE name IN (WITH RECURSIVE prefix(p) AS "
@@ -320,7 +345,7 @@ std::size_t CClaimTrieCacheBase::getTotalClaimsInTrie() const
 CAmount CClaimTrieCacheBase::getTotalValueOfClaimsInTrie(bool fControllingOnly) const
 {
     CAmount ret = 0;
-    std::string query("SELECT (SELECT TOTAL(s.amount)+c.amount FROM supports s "
+    std::string query("SELECT TOTAL(SELECT TOTAL(s.amount)+c.amount FROM supports s "
                       "WHERE s.supportedClaimID = c.claimID AND s.validHeight < ?1 AND s.expirationHeight >= ?1) "
                       "FROM claims c WHERE c.validHeight < ?1 AND s.expirationHeight >= ?1");
     if (fControllingOnly)
@@ -417,6 +442,7 @@ uint256 CClaimTrieCacheBase::recursiveComputeMerkleHash(const std::string& name,
         if (child.hash->IsNull()) {
             *child.hash = recursiveComputeMerkleHash(child.name, child.takeoverHeight, checkOnly);
         }
+        LogPrint(BCLog::CLAIMS, "Hash of %s: %s, takeover: %d\n", child.name, (*child.hash).GetHex(), child.takeoverHeight);
         completeHash(*child.hash, child.name, pos);
         vchToHash.push_back(child.name[pos]);
         vchToHash.insert(vchToHash.end(), child.hash->begin(), child.hash->end());
@@ -1003,6 +1029,10 @@ bool CClaimTrieCacheBase::incrementBlock(insertUndoType& insertUndo, claimUndoTy
         }
     }
 
+    getTakeoverQuery.used(true);
+    hasCandidateQuery.used(true);
+    noCandidateQuery.used(true);
+
     nNextHeight++;
     return true;
 }
@@ -1302,8 +1332,7 @@ bool CClaimTrieCacheBase::getProofForName(const std::string& name, const uint160
 
         const auto pos = key.size();
         std::vector<std::pair<unsigned char, uint256>> children;
-        auto childQuery = db << "SELECT name, hash FROM nodes WHERE parent = ?" << key;
+        for (auto&& child : childHashQuery << key) {
-        for (auto&& child : childQuery) {
             std::string childKey;
             uint256 hash;
             child >> childKey >> hash;
@@ -1321,6 +1350,7 @@ bool CClaimTrieCacheBase::getProofForName(const std::string& name, const uint160
             completeHash(hash, childKey, pos);
             children.emplace_back(childKey[pos], hash);
         }
+        childHashQuery++;
         if (key == name) {
             proof.hasValue = fNodeHasValue && claim.claimId == finalClaim;
             if (proof.hasValue) {

src/test/claimtriebranching_tests.cpp

@@ -42,6 +42,22 @@ BOOST_AUTO_TEST_CASE(takeover_stability_test) {
     BOOST_CHECK_EQUAL(takeover, height);
 }
 
+BOOST_AUTO_TEST_CASE(unaffected_children_get_new_parents_test) {
+    // this happens first on block 193976
+    ClaimTrieChainFixture fixture;
+    CMutableTransaction tx1 = fixture.MakeClaim(fixture.GetCoinbase(), "longest123", "one", 1);
+    fixture.IncrementBlocks(1);
+    CMutableTransaction tx2 = fixture.MakeClaim(fixture.GetCoinbase(), "longest", "two", 2);
+    CMutableTransaction tx3 = fixture.MakeClaim(fixture.GetCoinbase(), "longest1", "three", 3);
+    CMutableTransaction tx4 = fixture.MakeClaim(tx3, "longest1", "three1234", 2);
+    fixture.IncrementBlocks(1);
+    auto n1 = fixture.getNodeChildren("longest");
+    auto n2 = fixture.getNodeChildren("longest1");
+    BOOST_CHECK_EQUAL(n1[0], "longest1");
+    BOOST_CHECK_EQUAL(n2[0], "longest123");
+    // TODO: this test at present fails to cover the split node case of the same thing (which occurs on block 202577)
+}
+
 /*
     claims
         no competing bids

src/test/claimtriefixture.cpp

@@ -403,3 +403,12 @@ bool ClaimTrieChainFixture::getClaimById(const uint160 &claimId, std::string &na
     }
     return hit;
 }
+
+std::vector<std::string> ClaimTrieChainFixture::getNodeChildren(const std::string &name) {
+    std::vector<std::string> ret;
+    for (auto&& row: db << "SELECT name FROM nodes WHERE parent = ?" << name) {
+        ret.emplace_back();
+        row >> ret.back();
+    }
+    return ret;
+}

src/test/claimtriefixture.h

@@ -113,6 +113,8 @@ struct ClaimTrieChainFixture: public CClaimTrieCache
 
     // check effective quantity of best claim
     boost::test_tools::predicate_result best_claim_effective_amount_equals(const std::string& name, CAmount amount);
+
+    std::vector<std::string> getNodeChildren(const std::string& name);
 };
 
 #endif // _CLAIMTRIEFIXTURE_H_