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fix: check actual collisions instead of not

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This commit is contained in:
jubb 2021-04-09 14:19:48 +10:00
parent 50c4dd4b43
commit f723069775
2 changed files with 12 additions and 9 deletions
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8
app/src/main/java/org/thoughtcrime/securesms/loki/database/SessionJobDatabase.kt
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@ -23,14 +23,6 @@ class SessionJobDatabase(context: Context, helper: SQLCipherOpenHelper) : Databa
fun persistJob(job: Job) { fun persistJob(job: Job) {
val database = databaseHelper.writableDatabase val database = databaseHelper.writableDatabase
val contentValues = ContentValues(4) val contentValues = ContentValues(4)
val existing = database.get(sessionJobTable, "$jobID = ?", arrayOf(job.id!!)) { cursor ->
cursor.count
} ?: 0
// When adding multiple jobs in rapid succession, timestamps might not be good enough as a unique ID. To
// deal with this we keep track of the number of jobs with a given timestamp and that to the end of the
// timestamp to make it a unique ID. We can't use a random number because we do still want to keep track
// of the order in which the jobs were added.
job.id += existing
contentValues.put(jobID, job.id) contentValues.put(jobID, job.id)
contentValues.put(jobType, job.getFactoryKey()) contentValues.put(jobType, job.getFactoryKey())
contentValues.put(failureCount, job.failureCount) contentValues.put(failureCount, job.failureCount)

13
libsession/src/main/java/org/session/libsession/messaging/jobs/JobQueue.kt
View File

@ -6,7 +6,9 @@ import kotlinx.coroutines.channels.Channel.Factory.UNLIMITED
import org.session.libsession.messaging.MessagingConfiguration import org.session.libsession.messaging.MessagingConfiguration
import org.session.libsignal.utilities.logging.Log import org.session.libsignal.utilities.logging.Log
import java.util.* import java.util.*
import java.util.concurrent.ConcurrentHashMap
import java.util.concurrent.Executors import java.util.concurrent.Executors
import java.util.concurrent.atomic.AtomicInteger
import kotlin.concurrent.schedule import kotlin.concurrent.schedule
import kotlin.math.min import kotlin.math.min
import kotlin.math.pow import kotlin.math.pow
@ -16,6 +18,8 @@ import kotlin.math.roundToLong
class JobQueue : JobDelegate { class JobQueue : JobDelegate {
private var hasResumedPendingJobs = false // Just for debugging private var hasResumedPendingJobs = false // Just for debugging
private val jobTimestampMap = ConcurrentHashMap<Long, AtomicInteger>()
private val dispatcher = Executors.newSingleThreadExecutor().asCoroutineDispatcher() private val dispatcher = Executors.newSingleThreadExecutor().asCoroutineDispatcher()
private val scope = GlobalScope + SupervisorJob() private val scope = GlobalScope + SupervisorJob()
private val queue = Channel<Job>(UNLIMITED) private val queue = Channel<Job>(UNLIMITED)
@ -44,7 +48,14 @@ class JobQueue : JobDelegate {
} }
private fun addWithoutExecuting(job: Job) { private fun addWithoutExecuting(job: Job) {
job.id = System.currentTimeMillis().toString() // When adding multiple jobs in rapid succession, timestamps might not be good enough as a unique ID. To
// deal with this we keep track of the number of jobs with a given timestamp and that to the end of the
// timestamp to make it a unique ID. We can't use a random number because we do still want to keep track
// of the order in which the jobs were added.
val currentTime = System.currentTimeMillis()
jobTimestampMap.putIfAbsent(currentTime, AtomicInteger())
job.id = jobTimestampMap[currentTime]!!.getAndIncrement().toString()
MessagingConfiguration.shared.storage.persistJob(job) MessagingConfiguration.shared.storage.persistJob(job)
} }