Defer container UPDATEs until we've finished the current statement

Postgres would otherwise deadlock forever. I'm not sure why this worked
when testing - perhaps we always had fewer than BATCH_SIZE rows?

Signed-off-by: Graham <gpe@openrs2.org>
bzip2
Graham 4 years ago
parent 42c3c4c120
commit b1ccd9371d
  1. 67
      archive/src/main/kotlin/org/openrs2/archive/key/KeyBruteForcer.kt

@ -15,6 +15,13 @@ import javax.inject.Singleton
public class KeyBruteForcer @Inject constructor(
private val database: Database
) {
private data class ValidatedKey(
val keyId: Long,
val containerId: Long,
val uncompressedLength: Int,
val uncompressedChecksum: Int
)
/*
* The code for writing to the containers and keys tables ensures that the
* row IDs are allocated monotonically (by forbidding any other
@ -94,6 +101,7 @@ public class KeyBruteForcer @Inject constructor(
while (true) {
val pair = nextContainer(connection, lastContainerId) ?: break
val (containerId, data) = pair
var validatedKey: ValidatedKey? = null
connection.prepareStatement(
"""
@ -113,12 +121,17 @@ public class KeyBruteForcer @Inject constructor(
val k3 = rows.getInt(5)
val key = XteaKey(k0, k1, k2, k3)
if (validateKey(connection, data, key, keyId, containerId)) {
validatedKey = validateKey(data, key, keyId, containerId)
if (validatedKey != null) {
break
}
}
}
if (validatedKey != null) {
updateContainers(connection, listOf(validatedKey!!))
}
lastContainerId = containerId
}
}
@ -187,6 +200,7 @@ public class KeyBruteForcer @Inject constructor(
while (true) {
val pair = nextKey(connection, lastKeyId) ?: break
val (keyId, key) = pair
val validatedKeys = mutableListOf<ValidatedKey>()
connection.prepareStatement(
"""
@ -203,11 +217,16 @@ public class KeyBruteForcer @Inject constructor(
val containerId = rows.getLong(1)
val data = rows.getBytes(2)
validateKey(connection, data, key, keyId, containerId)
val validatedKey = validateKey(data, key, keyId, containerId)
if (validatedKey != null) {
validatedKeys += validatedKey
}
}
}
}
updateContainers(connection, validatedKeys)
lastKeyId = keyId
}
@ -253,34 +272,42 @@ public class KeyBruteForcer @Inject constructor(
}
private fun validateKey(
connection: Connection,
data: ByteArray,
key: XteaKey,
keyId: Long,
containerId: Long
): Boolean {
): ValidatedKey? {
Unpooled.wrappedBuffer(data).use { buf ->
Js5Compression.uncompressIfKeyValid(buf, key).use { uncompressed ->
if (uncompressed == null) {
return false
return if (uncompressed != null) {
ValidatedKey(keyId, containerId, uncompressed.readableBytes(), uncompressed.crc32())
} else {
null
}
}
}
}
connection.prepareStatement(
"""
UPDATE containers
SET key_id = ?, uncompressed_length = ?, uncompressed_crc32 = ?
WHERE id = ?
""".trimIndent()
).use { stmt ->
stmt.setLong(1, keyId)
stmt.setInt(2, uncompressed.readableBytes())
stmt.setInt(3, uncompressed.crc32())
stmt.setLong(4, containerId)
stmt.execute()
}
private fun updateContainers(connection: Connection, keys: List<ValidatedKey>) {
if (keys.isEmpty()) {
return
}
return true
connection.prepareStatement(
"""
UPDATE containers
SET key_id = ?, uncompressed_length = ?, uncompressed_crc32 = ?
WHERE id = ?""".trimIndent()
).use { stmt ->
for (key in keys) {
stmt.setLong(1, key.keyId)
stmt.setInt(2, key.uncompressedLength)
stmt.setInt(3, key.uncompressedChecksum)
stmt.setLong(4, key.containerId)
stmt.addBatch()
}
stmt.executeBatch()
}
}

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