99 lines
3.6 KiB
Kotlin
99 lines
3.6 KiB
Kotlin
package dev.inmo.micro_utils.repos.cache
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import dev.inmo.micro_utils.repos.*
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import dev.inmo.micro_utils.repos.cache.cache.KVCache
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import kotlinx.coroutines.CoroutineScope
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import kotlinx.coroutines.Dispatchers
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import kotlinx.coroutines.flow.*
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open class ReadCRUDCacheRepo<ObjectType, IdType>(
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protected open val parentRepo: ReadCRUDRepo<ObjectType, IdType>,
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protected open val kvCache: KVCache<IdType, ObjectType>,
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protected open val idGetter: (ObjectType) -> IdType
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) : ReadCRUDRepo<ObjectType, IdType> by parentRepo {
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override suspend fun getById(id: IdType): ObjectType? = kvCache.get(id) ?: (parentRepo.getById(id) ?.also {
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kvCache.set(id, it)
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})
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override suspend fun contains(id: IdType): Boolean = kvCache.contains(id) || parentRepo.contains(id)
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}
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fun <ObjectType, IdType> ReadCRUDRepo<ObjectType, IdType>.cached(
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kvCache: KVCache<IdType, ObjectType>,
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idGetter: (ObjectType) -> IdType
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) = ReadCRUDCacheRepo(this, kvCache, idGetter)
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open class WriteCRUDCacheRepo<ObjectType, IdType, InputValueType>(
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protected open val parentRepo: WriteCRUDRepo<ObjectType, IdType, InputValueType>,
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protected open val kvCache: KVCache<IdType, ObjectType>,
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protected open val scope: CoroutineScope = CoroutineScope(Dispatchers.Default),
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protected open val idGetter: (ObjectType) -> IdType
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) : WriteCRUDRepo<ObjectType, IdType, InputValueType> {
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override val newObjectsFlow: Flow<ObjectType> by parentRepo::newObjectsFlow
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override val updatedObjectsFlow: Flow<ObjectType> by parentRepo::updatedObjectsFlow
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override val deletedObjectsIdsFlow: Flow<IdType> by parentRepo::deletedObjectsIdsFlow
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val deletedObjectsFlowJob = parentRepo.deletedObjectsIdsFlow.onEach {
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kvCache.unset(it)
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}.launchIn(scope)
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override suspend fun deleteById(ids: List<IdType>) = parentRepo.deleteById(ids)
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override suspend fun update(values: List<UpdatedValuePair<IdType, InputValueType>>): List<ObjectType> {
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val updated = parentRepo.update(values)
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kvCache.unset(values.map { it.id })
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kvCache.set(updated.associateBy { idGetter(it) })
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return updated
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}
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override suspend fun update(id: IdType, value: InputValueType): ObjectType? {
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return parentRepo.update(id, value) ?.also {
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kvCache.unset(id)
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kvCache.set(idGetter(it), it)
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}
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}
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override suspend fun create(values: List<InputValueType>): List<ObjectType> {
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val created = parentRepo.create(values)
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kvCache.set(
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created.associateBy { idGetter(it) }
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)
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return created
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}
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}
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fun <ObjectType, IdType, InputType> WriteCRUDRepo<ObjectType, IdType, InputType>.caching(
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kvCache: KVCache<IdType, ObjectType>,
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scope: CoroutineScope,
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idGetter: (ObjectType) -> IdType
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) = WriteCRUDCacheRepo(this, kvCache, scope, idGetter)
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open class CRUDCacheRepo<ObjectType, IdType, InputValueType>(
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override val parentRepo: CRUDRepo<ObjectType, IdType, InputValueType>,
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kvCache: KVCache<IdType, ObjectType>,
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scope: CoroutineScope = CoroutineScope(Dispatchers.Default),
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idGetter: (ObjectType) -> IdType
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) : ReadCRUDCacheRepo<ObjectType, IdType>(
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parentRepo,
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kvCache,
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idGetter
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),
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WriteCRUDRepo<ObjectType, IdType, InputValueType> by WriteCRUDCacheRepo(
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parentRepo,
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kvCache,
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scope,
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idGetter
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),
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CRUDRepo<ObjectType, IdType, InputValueType>
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fun <ObjectType, IdType, InputType> CRUDRepo<ObjectType, IdType, InputType>.cached(
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kvCache: KVCache<IdType, ObjectType>,
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scope: CoroutineScope,
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idGetter: (ObjectType) -> IdType
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) = CRUDCacheRepo(this, kvCache, scope, idGetter)
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