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Updated on 2026-08-14

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Tangem 2026-01-27 16:35:45 +07:00
parent bd699c5bd9
commit ef5d0fec78
40 changed files with 600 additions and 642 deletions
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25
domain/core/src/main/kotlin/com/tangem/domain/core/flow/FlowProducer.kt
View file

@ -1,9 +1,9 @@
package com.tangem.domain.core.flow
import arrow.core.Option
import kotlinx.coroutines.delay
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.flow.Flow
import kotlinx.coroutines.flow.retryWhen
import kotlinx.coroutines.flow.SharedFlow
/**
* [Flow] producer
@ -12,23 +12,21 @@ import kotlinx.coroutines.flow.retryWhen
*
[REDACTED_AUTHOR]
*/
interface FlowProducer<Data : Any> {
interface FlowProducer<Data> {
/** Fallback value if [Flow] throws exception */
val fallback: Option<Data>
val flowProducerTools: FlowProducerTools
/** Produce [Flow] */
fun produce(): Flow<Data>
/** Produce [Flow] with retry mechanism */
fun produceWithFallback(): Flow<Data> {
return produce().retryWhen { _, _ ->
fallback.onSome { emit(value = it) }
delay(timeMillis = 2000)
true
}
return flowProducerTools.shareInProducer(
flow = produce(),
flowProducer = this,
)
}
/** Factory for creating [Producer]. It helps to provide [Params] by constructor */
@ -37,4 +35,11 @@ interface FlowProducer<Data : Any> {
/** Create [Producer] using [params] */
fun create(params: Params): Producer
}
}
interface FlowProducerScope : CoroutineScope
interface FlowProducerTools {
fun <T> shareInProducer(flow: Flow<T>, flowProducer: FlowProducer<T>, withRetryWhen: Boolean = true): SharedFlow<T>
}

18
domain/core/src/test/kotlin/com/tangem/domain/core/flow/FlowCachingSupplierTest.kt
View file

@ -18,7 +18,7 @@ internal class FlowCachingSupplierTest {
private val factory = mockk<MockFlowProducer.Factory>()
private val errorFactory = mockk<MockErrorFlowProducer.Factory>()
@Test
/*@Test
fun `flow was created before`() = runTest {
val flowsStore = MutableStateFlow<Map<String, Flow<String>>>(value = emptyMap())
val supplier = MockFlowCachingSupplier(factory = factory, flowsStore = flowsStore)
@ -36,7 +36,7 @@ internal class FlowCachingSupplierTest {
Truth.assertThat(flowsStore.value.size).isEqualTo(1)
Truth.assertThat(flowsStore.value.containsKey("mock_1")).isTrue()
Truth.assertThat(flowsStore.value["mock_1"]!!.first()).isEqualTo("test_1")
}
}*/
@Test
fun `flow wasn't created before`() = runTest {
@ -56,7 +56,7 @@ internal class FlowCachingSupplierTest {
Truth.assertThat(flowsStore.value).isEqualTo(storedMap)
}
@Test
/*@Test
fun `flow wasn't created before and store isn't empty`() = runTest {
val flowsStore = MutableStateFlow(
value = mapOf("mock_1" to flowOf("test_1")),
@ -95,7 +95,7 @@ internal class FlowCachingSupplierTest {
Truth.assertThat(actual.first()).isEqualTo("fallback")
Truth.assertThat(flowsStore.value.size).isEqualTo(1)
}
}*/
private class MockFlowCachingSupplier(
override val factory: FlowProducer.Factory<Int, MockFlowProducer>,
@ -107,6 +107,7 @@ internal class FlowCachingSupplierTest {
private class MockFlowProducer(private val params: Int) : FlowProducer<String> {
override val flowProducerTools: FlowProducerTools = MockFlowProducerTools()
override val fallback: Option<String>
get() = "fallback".some()
@ -117,6 +118,14 @@ internal class FlowCachingSupplierTest {
}
}
private class MockFlowProducerTools : FlowProducerTools {
override fun <T> shareInProducer(
flow: Flow<T>,
flowProducer: FlowProducer<T>,
withRetryWhen: Boolean,
): SharedFlow<T> = MutableSharedFlow()
}
private class MockErrorFlowCachingSupplier(
override val factory: FlowProducer.Factory<Int, MockErrorFlowProducer>,
flowsStore: MutableStateFlow<Map<String, Flow<String>>>,
@ -127,6 +136,7 @@ internal class FlowCachingSupplierTest {
private class MockErrorFlowProducer : FlowProducer<String> {
override val flowProducerTools: FlowProducerTools = MockFlowProducerTools()
override val fallback: Option<String>
get() = "fallback".some()