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Optimise SnodesAPI

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This commit is contained in:
bemusementpark 2024-08-03 20:19:29 +09:30
parent 482f169df1
commit c1d40cdbe7
2 changed files with 181 additions and 189 deletions
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349
libsession/src/main/java/org/session/libsession/snode/SnodeAPI.kt
View File

@ -18,6 +18,8 @@ import nl.komponents.kovenant.task
import org.session.libsession.messaging.MessagingModuleConfiguration
import org.session.libsession.messaging.utilities.MessageWrapper
import org.session.libsession.messaging.utilities.SodiumUtilities.sodium
import org.session.libsession.utilities.buildMutableMap
import org.session.libsession.utilities.mapValuesNotNull
import org.session.libsession.utilities.toByteArray
import org.session.libsignal.crypto.getRandomElement
import org.session.libsignal.database.LokiAPIDatabaseProtocol
@ -73,20 +75,18 @@ object SnodeAPI {
// Use port 4433 if the API level can handle the network security configuration and enforce pinned certificates
private val seedNodePort = if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) 443 else 4443
private const val snodeFailureThreshold = 3
private const val useOnionRequests = true
private const val useTestnet = false
private val seedNodePool = if (useTestnet) {
setOf( "http://public.loki.foundation:38157" )
} else {
setOf(
"https://seed1.getsession.org:$seedNodePort",
"https://seed2.getsession.org:$seedNodePort",
"https://seed3.getsession.org:$seedNodePort",
)
}
private val seedNodePool = if (useTestnet) setOf(
"http://public.loki.foundation:38157"
) else setOf(
"https://seed1.getsession.org:$seedNodePort",
"https://seed2.getsession.org:$seedNodePort",
"https://seed3.getsession.org:$seedNodePort",
)
private const val snodeFailureThreshold = 3
private const val useOnionRequests = true
private const val KEY_IP = "public_ip"
private const val KEY_PORT = "storage_port"
@ -121,48 +121,45 @@ object SnodeAPI {
parameters: Map<String, Any>,
publicKey: String? = null,
version: Version = Version.V3
): RawResponsePromise = if (useOnionRequests) OnionRequestAPI.sendOnionRequest(method, parameters, snode, version, publicKey).map {
val body = it.body ?: throw Error.Generic
JsonUtil.fromJson(body, Map::class.java)
} else task {
val payload = mapOf( "method" to method.rawValue, "params" to parameters )
try {
val url = "${snode.address}:${snode.port}/storage_rpc/v1"
val response = HTTP.execute(HTTP.Verb.POST, url, payload).toString()
JsonUtil.fromJson(response, Map::class.java)
} catch (exception: Exception) {
(exception as? HTTP.HTTPRequestFailedException)?.run {
handleSnodeError(statusCode, json, snode, publicKey)
// TODO Check if we meant to throw the error returned by handleSnodeError
throw exception
): RawResponsePromise = when {
useOnionRequests -> OnionRequestAPI.sendOnionRequest(method, parameters, snode, version, publicKey).map {
JsonUtil.fromJson(it.body ?: throw Error.Generic, Map::class.java)
}
else -> task {
HTTP.execute(
HTTP.Verb.POST,
url = "${snode.address}:${snode.port}/storage_rpc/v1",
parameters = buildMap {
this["method"] = method.rawValue
this["params"] = parameters
}
Log.d("Loki", "Unhandled exception: $exception.")
throw exception
).toString().let {
JsonUtil.fromJson(it, Map::class.java)
}
}.fail { e ->
when (e) {
is HTTP.HTTPRequestFailedException -> handleSnodeError(e.statusCode, e.json, snode, publicKey)
else -> Log.d("Loki", "Unhandled exception: $e.")
}
}
}
private val GET_RANDOM_SNODE_PARAMS = buildMap<String, Any> {
this["method"] = "get_n_service_nodes"
this["params"] = buildMap {
this["active_only"] = true
this["fields"] = sequenceOf(KEY_IP, KEY_PORT, KEY_X25519, KEY_ED25519, KEY_VERSION).associateWith { true }
}
}
internal fun getRandomSnode(): Promise<Snode, Exception> =
snodePool.takeIf { it.size >= minimumSnodePoolCount }?.let { Promise.of(it.getRandomElement()) } ?: task {
snodePool.takeIf { it.size >= minimumSnodePoolCount }?.getRandomElement()?.let { Promise.of(it) } ?: task {
val target = seedNodePool.random()
val url = "$target/json_rpc"
Log.d("Loki", "Populating snode pool using: $target.")
val parameters = mapOf(
"method" to "get_n_service_nodes",
"params" to mapOf(
"active_only" to true,
"fields" to mapOf(
KEY_IP to true, KEY_PORT to true,
KEY_X25519 to true, KEY_ED25519 to true,
KEY_VERSION to true
)
)
)
val response = HTTP.execute(HTTP.Verb.POST, url, parameters, useSeedNodeConnection = true)
val json = try {
JsonUtil.fromJson(response, Map::class.java)
} catch (exception: Exception) {
mapOf( "result" to response.toString())
}
val url = "$target/json_rpc"
val response = HTTP.execute(HTTP.Verb.POST, url, GET_RANDOM_SNODE_PARAMS, useSeedNodeConnection = true)
val json = runCatching { JsonUtil.fromJson(response, Map::class.java) }.getOrNull()
?: buildMap { this["result"] = response.toString() }
val intermediate = json["result"] as? Map<*, *> ?: throw Error.Generic
.also { Log.d("Loki", "Failed to update snode pool, intermediate was null.") }
val rawSnodes = intermediate["service_node_states"] as? List<*> ?: throw Error.Generic
@ -180,7 +177,7 @@ object SnodeAPI {
).also { if (it == null) Log.d("Loki", "Failed to parse: ${rawSnode.prettifiedDescription()}.") }
}.toSet().also {
Log.d("Loki", "Persisting snode pool to database.")
this.snodePool = it
snodePool = it
}.runCatching { getRandomElement() }.onFailure {
Log.d("Loki", "Got an empty snode pool from: $target.")
throw SnodeAPI.Error.Generic
@ -220,10 +217,13 @@ object SnodeAPI {
}
val base64EncodedNameHash = Base64.encodeBytes(nameHash)
// Ask 3 different snodes for the Account ID associated with the given name hash
val parameters = mapOf(
"endpoint" to "ons_resolve",
"params" to mapOf( "type" to 0, "name_hash" to base64EncodedNameHash )
)
val parameters = buildMap<String, Any> {
this["endpoint"] = "ons_resolve"
this["params"] = buildMap {
this["type"] = 0
this["name_hash"] = base64EncodedNameHash
}
}
val promises = List(validationCount) {
getRandomSnode().bind { snode ->
retryIfNeeded(maxRetryCount) {
@ -232,10 +232,9 @@ object SnodeAPI {
}
}
return all(promises).map { results ->
val accountIDs = mutableListOf<String>()
for (json in results) {
val intermediate = json["result"] as? Map<*, *>
val hexEncodedCiphertext = intermediate?.get("encrypted_value") as? String ?: throw Error.Generic
results.map { json ->
val intermediate = json["result"] as? Map<*, *> ?: throw Error.Generic
val hexEncodedCiphertext = intermediate["encrypted_value"] as? String ?: throw Error.Generic
val ciphertext = Hex.fromStringCondensed(hexEncodedCiphertext)
val isArgon2Based = (intermediate["nonce"] == null)
if (isArgon2Based) {
@ -251,7 +250,7 @@ object SnodeAPI {
if (!sodium.cryptoSecretBoxOpenEasy(accountIDAsData, ciphertext, ciphertext.size.toLong(), nonce, key)) {
throw Error.DecryptionFailed
}
accountIDs.add(Hex.toStringCondensed(accountIDAsData))
Hex.toStringCondensed(accountIDAsData)
} else {
val hexEncodedNonce = intermediate["nonce"] as? String ?: throw Error.Generic
val nonce = Hex.fromStringCondensed(hexEncodedNonce)
@ -263,10 +262,9 @@ object SnodeAPI {
if (!sodium.cryptoAeadXChaCha20Poly1305IetfDecrypt(accountIDAsData, null, null, ciphertext, ciphertext.size.toLong(), null, 0, nonce, key)) {
throw Error.DecryptionFailed
}
accountIDs.add(Hex.toStringCondensed(accountIDAsData))
Hex.toStringCondensed(accountIDAsData)
}
}
accountIDs.takeIf { it.size == validationCount && it.toSet().size == 1 }?.first()
}.takeIf { it.size == validationCount && it.toSet().size == 1 }?.first()
?: throw Error.ValidationFailed
}
}
@ -274,30 +272,31 @@ object SnodeAPI {
fun getSwarm(publicKey: String): Promise<Set<Snode>, Exception> =
database.getSwarm(publicKey)?.takeIf { it.size >= minimumSwarmSnodeCount }?.let(Promise.Companion::of)
?: getRandomSnode().bind {
invoke(Snode.Method.GetSwarm, it, parameters = mapOf( "pubKey" to publicKey ), publicKey)
invoke(Snode.Method.GetSwarm, it, parameters = buildMap { this["pubKey"] = publicKey }, publicKey)
}.map {
parseSnodes(it).toSet()
}.success {
database.setSwarm(publicKey, it)
}
private fun signAndEncode(data: ByteArray, userED25519KeyPair: KeyPair) = sign(data, userED25519KeyPair).let(Base64::encodeBytes)
private fun signAndEncodeCatching(data: ByteArray, userED25519KeyPair: KeyPair): Result<String> =
runCatching { signAndEncode(data, userED25519KeyPair) }
private fun signAndEncode(data: ByteArray, userED25519KeyPair: KeyPair): String =
sign(data, userED25519KeyPair).let(Base64::encodeBytes)
private fun sign(data: ByteArray, userED25519KeyPair: KeyPair): ByteArray = ByteArray(Sign.BYTES).also {
sodium.cryptoSignDetached(
it,
data,
data.size.toLong(),
userED25519KeyPair.secretKey.asBytes
)
sodium.cryptoSignDetached(it, data, data.size.toLong(), userED25519KeyPair.secretKey.asBytes)
}
fun getRawMessages(snode: Snode, publicKey: String, requiresAuth: Boolean = true, namespace: Int = 0): RawResponsePromise {
// Get last message hash
val lastHashValue = database.getLastMessageHashValue(snode, publicKey, namespace) ?: ""
val parameters = mutableMapOf<String, Any>(
"pubKey" to publicKey,
"last_hash" to lastHashValue,
)
val parameters = buildMutableMap<String, Any> {
this["pubKey"] = publicKey
this["last_hash"] = lastHashValue
// If the namespace is default (0) here it will be implicitly read as 0 on the storage server
// we only need to specify it explicitly if we want to (in future) or if it is non-zero
namespace.takeIf { it != 0 }?.let { this["namespace"] = it }
}
// Construct signature
if (requiresAuth) {
val userED25519KeyPair = try {
@ -311,23 +310,13 @@ object SnodeAPI {
val ed25519PublicKey = userED25519KeyPair.publicKey.asHexString
val verificationData = buildString {
append("retrieve")
if (namespace != 0) append(namespace)
namespace.takeIf { it != 0 }?.let(::append)
append(timestamp)
}.toByteArray()
val signature = try {
signAndEncode(verificationData, userED25519KeyPair)
} catch (exception: Exception) {
return Promise.ofFail(Error.SigningFailed)
}
parameters["signature"] = signAndEncodeCatching(verificationData, userED25519KeyPair).getOrNull()
?: return Promise.ofFail(Error.SigningFailed)
parameters["timestamp"] = timestamp
parameters["pubkey_ed25519"] = ed25519PublicKey
parameters["signature"] = signature
}
// If the namespace is default (0) here it will be implicitly read as 0 on the storage server
// we only need to specify it explicitly if we want to (in future) or if it is non-zero
if (namespace != 0) {
parameters["namespace"] = namespace
}
// Make the request
@ -341,11 +330,8 @@ object SnodeAPI {
val userED25519KeyPair = runCatching { MessagingModuleConfiguration.shared.getUserED25519KeyPair() }.getOrNull() ?: return null
val verificationData = "store$namespace$messageTimestamp".toByteArray()
val signature = try {
signAndEncode(verificationData, userED25519KeyPair)
} catch (e: Exception) {
Log.e("Loki", "Signing data failed with user secret key", e)
return null
val signature = signAndEncodeCatching(verificationData, userED25519KeyPair).run {
getOrNull() ?: return null.also { Log.e("Loki", "Signing data failed with user secret key", exceptionOrNull()) }
}
val params = buildMap {
@ -478,13 +464,13 @@ object SnodeAPI {
Log.e("Loki", "Signing data failed with user secret key", e)
return@retryIfNeeded Promise.ofFail(e)
}
val params = mapOf(
"pubkey" to publicKey,
"messages" to hashes,
"timestamp" to timestamp,
"pubkey_ed25519" to ed25519PublicKey,
"signature" to signature
)
val params = buildMap {
this["pubkey"] = publicKey
this["messages"] = hashes
this["timestamp"] = timestamp
this["pubkey_ed25519"] = ed25519PublicKey
this["signature"] = signature
}
getSingleTargetSnode(publicKey) bind { snode ->
invoke(Snode.Method.GetExpiries, snode, params, publicKey)
}
@ -578,7 +564,7 @@ object SnodeAPI {
}
}
fun deleteMessage(publicKey: String, serverHashes: List<String>): Promise<Map<String,Boolean>, Exception> =
fun deleteMessage(publicKey: String, serverHashes: List<String>): Promise<Map<String, Boolean>, Exception> =
retryIfNeeded(maxRetryCount) {
val module = MessagingModuleConfiguration.shared
val userED25519KeyPair = module.getUserED25519KeyPair() ?: return@retryIfNeeded Promise.ofFail(Error.NoKeyPair)
@ -586,35 +572,40 @@ object SnodeAPI {
getSingleTargetSnode(publicKey).bind { snode ->
retryIfNeeded(maxRetryCount) {
val verificationData = sequenceOf(Snode.Method.DeleteMessage.rawValue).plus(serverHashes).toByteArray()
val deleteMessageParams = mapOf(
"pubkey" to userPublicKey,
"pubkey_ed25519" to userED25519KeyPair.publicKey.asHexString,
"messages" to serverHashes,
"signature" to signAndEncode(verificationData, userED25519KeyPair)
)
val deleteMessageParams = buildMap {
this["pubkey"] = userPublicKey
this["pubkey_ed25519"] = userED25519KeyPair.publicKey.asHexString
this["messages"] = serverHashes
this["signature"] = signAndEncode(verificationData, userED25519KeyPair)
}
invoke(Snode.Method.DeleteMessage, snode, deleteMessageParams, publicKey).map { rawResponse ->
val swarms = rawResponse["swarm"] as? Map<String, Any> ?: return@map mapOf()
val result = swarms.mapNotNull { (hexSnodePublicKey, rawJSON) ->
val json = rawJSON as? Map<String, Any> ?: return@mapNotNull null
val isFailed = json["failed"] as? Boolean ?: false
val statusCode = json["code"] as? String
val reason = json["reason"] as? String
hexSnodePublicKey to if (isFailed) {
Log.e("Loki", "Failed to delete messages from: $hexSnodePublicKey due to error: $reason ($statusCode).")
false
} else {
val hashes = json["deleted"] as List<String> // Hashes of deleted messages
val signature = json["signature"] as String
val snodePublicKey = Key.fromHexString(hexSnodePublicKey)
// The signature looks like ( PUBKEY_HEX || RMSG[0] || ... || RMSG[N] || DMSG[0] || ... || DMSG[M] )
val message = sequenceOf(userPublicKey).plus(serverHashes).plus(hashes).toByteArray()
sodium.cryptoSignVerifyDetached(Base64.decode(signature), message, message.size, snodePublicKey.asBytes)
swarms.mapValuesNotNull { (hexSnodePublicKey, rawJSON) ->
(rawJSON as? Map<String, Any>)?.let { json ->
val isFailed = json["failed"] as? Boolean ?: false
val statusCode = json["code"] as? String
val reason = json["reason"] as? String
if (isFailed) {
Log.e("Loki", "Failed to delete messages from: $hexSnodePublicKey due to error: $reason ($statusCode).")
false
} else {
// Hashes of deleted messages
val hashes = json["deleted"] as List<String>
val signature = json["signature"] as String
val snodePublicKey = Key.fromHexString(hexSnodePublicKey)
// The signature looks like ( PUBKEY_HEX || RMSG[0] || ... || RMSG[N] || DMSG[0] || ... || DMSG[M] )
val message = sequenceOf(userPublicKey).plus(serverHashes).plus(hashes).toByteArray()
sodium.cryptoSignVerifyDetached(
Base64.decode(signature),
message,
message.size,
snodePublicKey.asBytes
)
}
}
}
return@map result.toMap()
}.fail { e ->
Log.e("Loki", "Failed to delete messages", e)
}
}.fail { e -> Log.e("Loki", "Failed to delete messages", e) }
}
}
}
@ -643,18 +634,16 @@ object SnodeAPI {
retryIfNeeded(maxRetryCount) {
getNetworkTime(snode).bind { (_, timestamp) ->
val verificationData = (Snode.Method.DeleteAll.rawValue + Namespace.ALL + timestamp.toString()).toByteArray()
val deleteMessageParams = mapOf(
"pubkey" to userPublicKey,
"pubkey_ed25519" to userED25519KeyPair.publicKey.asHexString,
"timestamp" to timestamp,
"signature" to signAndEncode(verificationData, userED25519KeyPair),
"namespace" to Namespace.ALL,
)
invoke(Snode.Method.DeleteAll, snode, deleteMessageParams, userPublicKey).map {
rawResponse -> parseDeletions(userPublicKey, timestamp, rawResponse)
}.fail { e ->
Log.e("Loki", "Failed to clear data", e)
val deleteMessageParams = buildMap {
this["pubkey"] = userPublicKey
this["pubkey_ed25519"] = userED25519KeyPair.publicKey.asHexString
this["timestamp"] = timestamp
this["signature"] = signAndEncode(verificationData, userED25519KeyPair)
this["namespace"] = Namespace.ALL
}
invoke(Snode.Method.DeleteAll, snode, deleteMessageParams, userPublicKey)
.map { rawResponse -> parseDeletions(userPublicKey, timestamp, rawResponse) }
.fail { e -> Log.e("Loki", "Failed to clear data", e) }
}
}
}
@ -662,69 +651,53 @@ object SnodeAPI {
fun parseRawMessagesResponse(rawResponse: RawResponse, snode: Snode, publicKey: String, namespace: Int = 0, updateLatestHash: Boolean = true, updateStoredHashes: Boolean = true): List<Pair<SignalServiceProtos.Envelope, String?>> =
(rawResponse["messages"] as? List<*>)?.let { messages ->
if (updateLatestHash) {
updateLastMessageHashValueIfPossible(snode, publicKey, messages, namespace)
}
if (updateLatestHash) updateLastMessageHashValueIfPossible(snode, publicKey, messages, namespace)
removeDuplicates(publicKey, messages, namespace, updateStoredHashes).let(::parseEnvelopes)
} ?: listOf()
fun updateLastMessageHashValueIfPossible(snode: Snode, publicKey: String, rawMessages: List<*>, namespace: Int) {
val lastMessageAsJSON = rawMessages.lastOrNull() as? Map<*, *>
val hashValue = lastMessageAsJSON?.get("hash") as? String
if (hashValue != null) {
database.setLastMessageHashValue(snode, publicKey, hashValue, namespace)
} else if (rawMessages.isNotEmpty()) {
Log.d("Loki", "Failed to update last message hash value from: ${rawMessages.prettifiedDescription()}.")
when {
hashValue != null -> database.setLastMessageHashValue(snode, publicKey, hashValue, namespace)
rawMessages.isNotEmpty() -> Log.d("Loki", "Failed to update last message hash value from: ${rawMessages.prettifiedDescription()}.")
}
}
fun removeDuplicates(publicKey: String, rawMessages: List<*>, namespace: Int, updateStoredHashes: Boolean): List<*> {
val originalMessageHashValues = database.getReceivedMessageHashValues(publicKey, namespace) ?: emptySet()
val receivedMessageHashValues = originalMessageHashValues.toMutableSet()
val result = rawMessages.filter { rawMessage ->
return rawMessages.filter { rawMessage ->
(rawMessage as? Map<*, *>)
?.let { it["hash"] as? String }
?.let { receivedMessageHashValues.add(it) }
?: false.also { Log.d("Loki", "Missing hash value for message: ${rawMessage?.prettifiedDescription()}.") }
}
if (updateStoredHashes && originalMessageHashValues.containsAll(receivedMessageHashValues)) {
database.setReceivedMessageHashValues(publicKey, receivedMessageHashValues, namespace)
}
return result
}
private fun parseEnvelopes(rawMessages: List<*>): List<Pair<SignalServiceProtos.Envelope, String?>> =
rawMessages.mapNotNull { rawMessage ->
val rawMessageAsJSON = rawMessage as? Map<*, *>
val base64EncodedData = rawMessageAsJSON?.get("data") as? String
val data = base64EncodedData?.let { Base64.decode(it) }
data?.runCatching(MessageWrapper::unwrap)
?.map { it to rawMessageAsJSON["hash"] as? String }
?.onFailure { Log.d("Loki", "Failed to unwrap data for message: ${rawMessage.prettifiedDescription()}.") }
if (data != null) {
try {
MessageWrapper.unwrap(data) to rawMessageAsJSON["hash"] as? String
} catch (e: Exception) {
Log.d("Loki", "Failed to unwrap data for message: ${rawMessage.prettifiedDescription()}.")
null
}
} else {
Log.d("Loki", "Failed to decode data for message: ${rawMessage?.prettifiedDescription()}.")
null
}.also {
if (updateStoredHashes && originalMessageHashValues.containsAll(receivedMessageHashValues)) {
database.setReceivedMessageHashValues(publicKey, receivedMessageHashValues, namespace)
}
}
}
private fun parseEnvelopes(rawMessages: List<*>): List<Pair<SignalServiceProtos.Envelope, String?>> = rawMessages.mapNotNull { rawMessage ->
val rawMessageAsJSON = rawMessage as? Map<*, *>
val base64EncodedData = rawMessageAsJSON?.get("data") as? String
val data = base64EncodedData?.let { Base64.decode(it) }
data ?: Log.d("Loki", "Failed to decode data for message: ${rawMessage?.prettifiedDescription()}.")
data?.runCatching { MessageWrapper.unwrap(this) to rawMessageAsJSON["hash"] as? String }
?.onFailure { Log.d("Loki", "Failed to unwrap data for message: ${rawMessage.prettifiedDescription()}.") }
?.getOrNull()
}
@Suppress("UNCHECKED_CAST")
private fun parseDeletions(userPublicKey: String, timestamp: Long, rawResponse: RawResponse): Map<String, Boolean> {
val swarms = rawResponse["swarm"] as? Map<String, Any> ?: return mapOf()
return swarms.mapNotNull { (hexSnodePublicKey, rawJSON) ->
val json = rawJSON as? Map<String, Any> ?: return@mapNotNull null
val isFailed = json["failed"] as? Boolean ?: false
val statusCode = json["code"] as? String
val reason = json["reason"] as? String
hexSnodePublicKey to if (isFailed) {
private fun parseDeletions(userPublicKey: String, timestamp: Long, rawResponse: RawResponse): Map<String, Boolean> =
(rawResponse["swarm"] as? Map<String, Any>)?.mapValuesNotNull { (hexSnodePublicKey, rawJSON) ->
val json = rawJSON as? Map<String, Any> ?: return@mapValuesNotNull null
if (json["failed"] as? Boolean == true) {
val reason = json["reason"] as? String
val statusCode = json["code"] as? String
Log.e("Loki", "Failed to delete all messages from: $hexSnodePublicKey due to error: $reason ($statusCode).")
false
} else {
@ -735,8 +708,7 @@ object SnodeAPI {
val message = sequenceOf(userPublicKey, "$timestamp").plus(hashes).toByteArray()
sodium.cryptoSignVerifyDetached(Base64.decode(signature), message, message.size, snodePublicKey.asBytes)
}
}.toMap()
}
} ?: mapOf()
// endregion
@ -752,7 +724,7 @@ object SnodeAPI {
publicKey?.let { dropSnodeFromSwarmIfNeeded(snode, it) }
snodePool -= snode
Log.d("Loki", "Snode pool count: ${snodePool.count()}.")
snodeFailureCount[snode] = 0
snodeFailureCount.remove(snode)
}
}
when (statusCode) {
@ -765,15 +737,14 @@ object SnodeAPI {
}
421 -> {
// The snode isn't associated with the given public key anymore
if (publicKey != null) {
json?.let(::parseSnodes)
?.takeIf { it.isNotEmpty() }
?.let { database.setSwarm(publicKey, it.toSet()) }
?: run {
Log.d("Loki", "Invalidating swarm for: $publicKey.")
dropSnodeFromSwarmIfNeeded(snode, publicKey)
}
} else Log.d("Loki", "Got a 421 without an associated public key.")
if (publicKey == null) Log.d("Loki", "Got a 421 without an associated public key.")
else json?.let(::parseSnodes)
?.takeIf { it.isNotEmpty() }
?.let { database.setSwarm(publicKey, it.toSet()) }
?: run {
Log.d("Loki", "Invalidating swarm for: $publicKey.")
dropSnodeFromSwarmIfNeeded(snode, publicKey)
}
}
404 -> {
Log.d("Loki", "404, probably no file found")

21
libsession/src/main/java/org/session/libsession/utilities/Util.kt
View File

@ -402,6 +402,12 @@ fun <E, K: Any, V: Any> Iterable<E>.associateByNotNull(
for(e in this) { it[keySelector(e) ?: continue] = valueTransform(e) ?: continue }
}
fun <K: Any, V: Any, W : Any> Map<K, V>.mapValuesNotNull(
valueTransform: (Map.Entry<K, V>) -> W?
): Map<K, W> = mutableMapOf<K, W>().also {
for(e in this) { it[e.key] = valueTransform(e) ?: continue }
}
/**
* Groups elements of the original collection by the key returned by the given [keySelector] function
* applied to each element and returns a map where each group key is associated with a list of
@ -413,6 +419,21 @@ inline fun <E, K> Iterable<E>.groupByNotNull(keySelector: (E) -> K?): Map<K, Lis
forEach { e -> keySelector(e)?.let { k -> it.getOrPut(k) { mutableListOf() } += e } }
}
/**
* Analogous to [buildMap], this function creates a [MutableMap] and populates it using the given [action].
*/
inline fun <K, V> buildMutableMap(action: MutableMap<K, V>.() -> Unit): MutableMap<K, V> =
mutableMapOf<K, V>().apply(action)
/**
* Converts a list of Pairs into a Map, filtering out any Pairs where the value is null.
*
* @param pairs The list of Pairs to convert.
* @return A Map with non-null values.
*/
fun <K : Any, V : Any> Iterable<Pair<K, V?>>.toMapNotNull(): Map<K, V> =
associateByNotNull(Pair<K, V?>::first, Pair<K, V?>::second)
fun Sequence<String>.toByteArray(): ByteArray = ByteArrayOutputStream().use { output ->
forEach { it.byteInputStream().use { input -> input.copyTo(output) } }
output.toByteArray()