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Migration to cleanup orphan TrustLevelEntities

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This commit is contained in:
Benoit Marty 2021-07-29 17:42:55 +02:00
parent b4e7f10019
commit 54f707644c
1 changed files with 58 additions and 1 deletions
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59
matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/store/db/RealmCryptoStoreMigration.kt
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@ -55,7 +55,7 @@ internal object RealmCryptoStoreMigration : RealmMigration {
// 0, 1, 2: legacy Riot-Android
// 3: migrate to RiotX schema
// 4, 5, 6, 7, 8, 9: migrations from RiotX (which was previously 1, 2, 3, 4, 5, 6)
const val CRYPTO_STORE_SCHEMA_VERSION = 12L
const val CRYPTO_STORE_SCHEMA_VERSION = 13L
private fun RealmObjectSchema.addFieldIfNotExists(fieldName: String, fieldType: Class<*>): RealmObjectSchema {
if (!hasField(fieldName)) {
@ -93,6 +93,7 @@ internal object RealmCryptoStoreMigration : RealmMigration {
if (oldVersion <= 9) migrateTo10(realm)
if (oldVersion <= 10) migrateTo11(realm)
if (oldVersion <= 11) migrateTo12(realm)
if (oldVersion <= 12) migrateTo13(realm)
}
private fun migrateTo1Legacy(realm: DynamicRealm) {
@ -497,4 +498,60 @@ internal object RealmCryptoStoreMigration : RealmMigration {
realm.schema.get("CryptoRoomEntity")
?.addRealmObjectField(CryptoRoomEntityFields.OUTBOUND_SESSION_INFO.`$`, outboundEntitySchema)
}
// Version 13L delete unreferenced TrustLevelEntity
private fun migrateTo13(realm: DynamicRealm) {
Timber.d("Step 12 -> 13")
// Use a trick to do that... Ref: https://stackoverflow.com/questions/55221366
val trustLevelEntitySchema = realm.schema.get("TrustLevelEntity")
/*
Creating a new temp field called isLinked which is set to true for those which are
references by other objects. Rest of them are set to false. Then removing all
those which are false and hence duplicate and unnecessary. Then removing the temp field
isLinked
*/
var mainCounter = 0
var deviceInfoCounter = 0
var keyInfoCounter = 0
val deleteCounter: Int
trustLevelEntitySchema
?.addField("isLinked", Boolean::class.java)
?.transform { obj ->
// Setting to false for all by default
obj.set("isLinked", false)
mainCounter++
}
realm.schema.get("DeviceInfoEntity")?.transform { obj ->
// Setting to true for those which are referenced in DeviceInfoEntity
deviceInfoCounter++
obj.getObject("trustLevelEntity")?.set("isLinked", true)
}
realm.schema.get("KeyInfoEntity")?.transform { obj ->
// Setting to true for those which are referenced in KeyInfoEntity
keyInfoCounter++
obj.getObject("trustLevelEntity")?.set("isLinked", true)
}
// Removing all those which are set as false
realm.where("TrustLevelEntity")
.equalTo("isLinked", false)
.findAll()
.also { deleteCounter = it.size }
.deleteAllFromRealm()
trustLevelEntitySchema?.removeField("isLinked")
Timber.w("TrustLevelEntity cleanup: $mainCounter entities")
Timber.w("TrustLevelEntity cleanup: $deviceInfoCounter entities referenced in DeviceInfoEntities")
Timber.w("TrustLevelEntity cleanup: $keyInfoCounter entities referenced in KeyInfoEntity")
Timber.w("TrustLevelEntity cleanup: $deleteCounter entities deleted!")
if (mainCounter != deviceInfoCounter + keyInfoCounter + deleteCounter) {
Timber.e("TrustLevelEntity cleanup: Something is not correct...")
}
}
}