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Add an index specifically for improving thread count perf.

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This commit is contained in:
Greyson Parrelli
2023-09-01 11:45:36 -04:00
committed by Nicholas Tinsley
parent bc1c8032c1
commit 494b2c6786
6 changed files with 42 additions and 37 deletions
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18
app/src/main/java/org/thoughtcrime/securesms/database/MessageTable.kt
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@@ -268,6 +268,7 @@ open class MessageTable(context: Context?, databaseHelper: SignalDatabase) : Dat
private const val INDEX_THREAD_STORY_SCHEDULED_DATE_LATEST_REVISION_ID = "message_thread_story_parent_story_scheduled_date_latest_revision_id_index"
private const val INDEX_DATE_SENT_FROM_TO_THREAD = "message_date_sent_from_to_thread_index"
private const val INDEX_THREAD_COUNT = "message_thread_count_index"
@JvmField
val CREATE_INDEXS = arrayOf(
@@ -286,7 +287,9 @@ open class MessageTable(context: Context?, databaseHelper: SignalDatabase) : Dat
"CREATE INDEX IF NOT EXISTS message_latest_revision_id_index ON $TABLE_NAME ($LATEST_REVISION_ID)",
"CREATE INDEX IF NOT EXISTS message_from_recipient_id_index ON $TABLE_NAME ($FROM_RECIPIENT_ID)",
"CREATE INDEX IF NOT EXISTS message_to_recipient_id_index ON $TABLE_NAME ($TO_RECIPIENT_ID)",
"CREATE UNIQUE INDEX IF NOT EXISTS message_unique_sent_from_thread ON $TABLE_NAME ($DATE_SENT, $FROM_RECIPIENT_ID, $THREAD_ID)"
"CREATE UNIQUE INDEX IF NOT EXISTS message_unique_sent_from_thread ON $TABLE_NAME ($DATE_SENT, $FROM_RECIPIENT_ID, $THREAD_ID)",
// This index is created specifically for getting the number of messages in a thread and therefore needs to be kept in sync with that query
"CREATE INDEX IF NOT EXISTS $INDEX_THREAD_COUNT ON $TABLE_NAME ($THREAD_ID) WHERE $STORY_TYPE = 0 AND $PARENT_STORY_ID <= 0 AND $SCHEDULED_DATE = -1 AND $LATEST_REVISION_ID IS NULL"
)
private val MMS_PROJECTION_BASE = arrayOf(
@@ -1810,17 +1813,8 @@ open class MessageTable(context: Context?, databaseHelper: SignalDatabase) : Dat
fun getMessageCountForThread(threadId: Long): Int {
return readableDatabase
.select("COUNT(*)")
.from("$TABLE_NAME INDEXED BY $INDEX_THREAD_STORY_SCHEDULED_DATE_LATEST_REVISION_ID")
.where("$THREAD_ID = ? AND $STORY_TYPE = ? AND $PARENT_STORY_ID <= ? AND $SCHEDULED_DATE = ? AND $LATEST_REVISION_ID IS NULL", threadId, 0, 0, -1)
.run()
.readToSingleInt()
}
fun getMessageCountForThread(threadId: Long, beforeTime: Long): Int {
return readableDatabase
.select("COUNT(*)")
.from("$TABLE_NAME INDEXED BY $INDEX_THREAD_STORY_SCHEDULED_DATE_LATEST_REVISION_ID")
.where("$THREAD_ID = ? AND $DATE_RECEIVED < ? AND $STORY_TYPE = ? AND $PARENT_STORY_ID <= ? AND $SCHEDULED_DATE = ? AND $LATEST_REVISION_ID IS NULL", threadId, beforeTime, 0, 0, -1)
.from("$TABLE_NAME INDEXED BY $INDEX_THREAD_COUNT")
.where("$THREAD_ID = $threadId AND $STORY_TYPE = 0 AND $PARENT_STORY_ID <= 0 AND $SCHEDULED_DATE = -1 AND $LATEST_REVISION_ID IS NULL")
.run()
.readToSingleInt()
}

7
app/src/main/java/org/thoughtcrime/securesms/database/helpers/SignalDatabaseMigrations.kt
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@@ -61,6 +61,7 @@ import org.thoughtcrime.securesms.database.helpers.migration.V202_DropMessageTab
import org.thoughtcrime.securesms.database.helpers.migration.V203_PreKeyStaleTimestamp
import org.thoughtcrime.securesms.database.helpers.migration.V204_GroupForeignKeyMigration
import org.thoughtcrime.securesms.database.helpers.migration.V205_DropPushTable
import org.thoughtcrime.securesms.database.helpers.migration.V206_AddConversationCountIndex
/**
* Contains all of the database migrations for [SignalDatabase]. Broken into a separate file for cleanliness.
@@ -69,7 +70,7 @@ object SignalDatabaseMigrations {
val TAG: String = Log.tag(SignalDatabaseMigrations.javaClass)
const val DATABASE_VERSION = 205
const val DATABASE_VERSION = 206
@JvmStatic
fun migrate(context: Application, db: SQLiteDatabase, oldVersion: Int, newVersion: Int) {
@@ -300,6 +301,10 @@ object SignalDatabaseMigrations {
if (oldVersion < 205) {
V205_DropPushTable.migrate(context, db, oldVersion, newVersion)
}
if (oldVersion < 206) {
V206_AddConversationCountIndex.migrate(context, db, oldVersion, newVersion)
}
}
@JvmStatic

19
app/src/main/java/org/thoughtcrime/securesms/database/helpers/migration/V206_AddConversationCountIndex.kt Normal file
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@@ -0,0 +1,19 @@
/*
* Copyright 2023 Signal Messenger, LLC
* SPDX-License-Identifier: AGPL-3.0-only
*/
package org.thoughtcrime.securesms.database.helpers.migration
import android.app.Application
import net.zetetic.database.sqlcipher.SQLiteDatabase
/**
* Add an index to speed up thread counts.
*/
@Suppress("ClassName")
object V206_AddConversationCountIndex : SignalDatabaseMigration {
override fun migrate(context: Application, db: SQLiteDatabase, oldVersion: Int, newVersion: Int) {
db.execSQL("CREATE INDEX IF NOT EXISTS message_thread_count_index ON message (thread_id) WHERE story_type = 0 AND parent_story_id <= 0 AND scheduled_date = -1 AND latest_revision_id IS NULL")
}
}