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Add abstraction for writeable magix history

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This commit is contained in:
Alexander Nozik 2023-08-03 19:21:35 +03:00
parent dc2d0094fc
commit a172da0a3d
5 changed files with 70 additions and 18 deletions
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13
magix/magix-api/src/commonMain/kotlin/space/kscience/magix/api/MagixMessage.kt
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@ -1,7 +1,7 @@
package space.kscience.magix.api
import kotlinx.serialization.Serializable
import kotlinx.serialization.json.JsonElement
import kotlinx.serialization.json.*
/*
@ -33,3 +33,14 @@ public data class MagixMessage(
val parentId: String? = null,
val user: JsonElement? = null,
)
/**
* The default accessor for username. If `user` is an object, take it's "name" field.
* If it is primitive, take its content. Return "@error" if it is an array.
*/
public val MagixMessage.userName: String? get() = when(user){
null, JsonNull -> null
is JsonObject -> user.jsonObject["name"]?.jsonPrimitive?.content
is JsonPrimitive -> user.content
else -> "@error"
}

1
magix/magix-storage/build.gradle.kts
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@ -15,6 +15,7 @@ kscience {
useSerialization {
json()
}
useCoroutines()
dependencies {
api(projects.magix.magixApi)
api(spclibs.kotlinx.datetime)

21
magix/magix-storage/magix-storage-xodus/src/main/kotlin/space/kscience/magix/storage/xodus/XodusMagixStorage.kt
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@ -6,12 +6,11 @@ import kotlinx.coroutines.flow.launchIn
import kotlinx.coroutines.flow.onEach
import kotlinx.serialization.encodeToString
import kotlinx.serialization.json.JsonObject
import kotlinx.serialization.json.JsonPrimitive
import kotlinx.serialization.json.jsonPrimitive
import space.kscience.magix.api.MagixEndpoint
import space.kscience.magix.api.MagixEndpoint.Companion.magixJson
import space.kscience.magix.api.MagixMessage
import space.kscience.magix.api.MagixMessageFilter
import space.kscience.magix.api.userName
import space.kscience.magix.storage.*
import java.nio.file.Path
import kotlin.sequences.Sequence
@ -31,7 +30,7 @@ private fun Entity.parseMagixMessage(): MagixMessage = MagixMessage(
},
)
public class XodusMagixHistory(private val store: PersistentEntityStore) : MagixHistory {
public class XodusMagixHistory(private val store: PersistentEntityStore) : WriteableMagixHistory {
public fun writeMessage(storeTransaction: StoreTransaction, message: MagixMessage) {
storeTransaction.newEntity(XodusMagixStorage.MAGIC_MESSAGE_ENTITY_TYPE).apply {
@ -49,20 +48,13 @@ public class XodusMagixHistory(private val store: PersistentEntityStore) : Magix
message.parentId?.let {
setProperty(MagixMessage::parentId.name, it)
}
message.user?.let {
setProperty(
MagixMessage::user.name,
when (it) {
is JsonObject -> it["name"]?.jsonPrimitive?.content ?: "@error"
is JsonPrimitive -> it.content
else -> "@error"
}
)
message.userName?.let {
setProperty(MagixMessage::user.name, it)
}
}
}
public fun sendMessage(message: MagixMessage) {
override suspend fun send(message: MagixMessage) {
store.executeInTransaction { transaction ->
writeMessage(transaction, message)
}
@ -139,6 +131,7 @@ public class XodusMagixHistory(private val store: PersistentEntityStore) : Magix
}
}
/**
* Attach a Xodus storage process to the given endpoint.
*/
@ -154,7 +147,7 @@ public class XodusMagixStorage(
//TODO consider message buffering
private val subscriptionJob = endpoint.subscribe(subscriptionFilter).onEach { message ->
history.sendMessage(message)
history.send(message)
}.launchIn(scope)
private val broadcastJob = endpoint.launchHistory(scope, history, endpointName = endpointName)

19
magix/magix-storage/src/commonMain/kotlin/space/kscience/magix/storage/MagixHistory.kt
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@ -4,7 +4,9 @@ import kotlinx.datetime.LocalDateTime
import kotlinx.serialization.SerialName
import kotlinx.serialization.Serializable
import kotlinx.serialization.json.JsonElement
import kotlinx.serialization.json.doubleOrNull
import kotlinx.serialization.json.jsonObject
import kotlinx.serialization.json.jsonPrimitive
import space.kscience.magix.api.MagixFormat
import space.kscience.magix.api.MagixMessage
import space.kscience.magix.api.MagixMessageFilter
@ -56,8 +58,17 @@ private fun JsonElement.takeElement(path: String): JsonElement? = if (path.isEmp
public fun MagixPayloadFilter.test(element: JsonElement): Boolean = when (this) {
is MagixPayloadFilter.Equals -> element.takeElement(path) == value
is MagixPayloadFilter.DateTimeInRange -> TODO()
is MagixPayloadFilter.NumberInRange -> TODO()
is MagixPayloadFilter.DateTimeInRange -> {
element.takeElement(path)?.jsonPrimitive?.content?.let {
LocalDateTime.parse(it) in from..to
} ?: false
}
is MagixPayloadFilter.NumberInRange -> {
element.takeElement(path)?.jsonPrimitive?.doubleOrNull?.let {
it in (from.toDouble()..to.toDouble())
} ?: false
}
is MagixPayloadFilter.Not -> !argument.test(element)
is MagixPayloadFilter.And -> left.test(element) && right.test(element)
is MagixPayloadFilter.Or -> left.test(element) || right.test(element)
@ -103,3 +114,7 @@ public interface MagixHistory {
}
}
public interface WriteableMagixHistory: MagixHistory{
public suspend fun send(message: MagixMessage)
}

32
magix/magix-storage/src/commonTest/kotlin/InMemoryMagixHistory.kt Normal file
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@ -0,0 +1,32 @@
package space.kscience.magix.storage
import kotlinx.coroutines.sync.Mutex
import kotlinx.coroutines.sync.withLock
import space.kscience.magix.api.MagixMessage
import space.kscience.magix.api.MagixMessageFilter
class InMemoryMagixHistory() : WriteableMagixHistory {
private val cache = mutableListOf<MagixMessage>()
private val mutex = Mutex()
override suspend fun send(message: MagixMessage) {
mutex.withLock {
cache.add(message)
}
}
override suspend fun useMessages(
magixFilter: MagixMessageFilter?,
payloadFilter: MagixPayloadFilter?,
userFilter: MagixUsernameFilter?,
callback: (Sequence<MagixMessage>) -> Unit,
) = mutex.withLock {
val sequence = cache.asSequence().filter { message ->
(magixFilter?.accepts(message) ?: true) &&
(userFilter?.userName?.equals(message.user) ?: true) &&
payloadFilter?.test(message.payload) ?: true
}
callback(sequence)
}
}