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Code Issues Releases Activity

Several microopts

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This commit is contained in:
carbotaniuman 2021-01-26 10:15:50 -06:00
parent f553bddff6
commit d410e5ec17
9 changed files with 71 additions and 70 deletions
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3
CHANGELOG.md
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@ -15,7 +15,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
### Fixed
- [2021-01-25] Add `privileged: true` to mangadex-at-home service in docker-compose to enable use of IOUring for the dockerized version [@_tde9].
- [2021-01-26] Make updated config restart the webserver and apply changes[@carbotaniuman].
- [2021-01-26] Make updated config restart the webserver and apply changes [@carbotaniuman].
- [2021-01-26] Optimize some code to reduce allocations [@carbotaniuman].
### Security

3
src/main/kotlin/mdnet/MangaDexClient.kt
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@ -196,9 +196,6 @@ class MangaDexClient(private val settingsFile: File, databaseFile: File, cacheFo
if (it.port in Constants.RESTRICTED_PORTS) {
throw ClientSettingsException("Config Error: Unsafe port number")
}
if (it.threads < 4) {
throw ClientSettingsException("Config Error: Invalid number of threads, must be >= 4")
}
if (it.maxMebibytesPerHour < 0) {
throw ClientSettingsException("Config Error: Max bandwidth must be >= 0")
}

13
src/main/kotlin/mdnet/ServerManager.kt
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@ -33,7 +33,6 @@ import org.slf4j.LoggerFactory
import java.util.concurrent.CountDownLatch
import java.util.concurrent.Executors
import java.util.concurrent.TimeUnit
import java.util.concurrent.atomic.AtomicReference
sealed class State
@ -61,9 +60,7 @@ class ServerManager(
// this must remain single-threaded because of how the state mechanism works
private val executor = Executors.newSingleThreadScheduledExecutor()
private val registry = PrometheusMeterRegistry(PrometheusConfig.DEFAULT)
private val statistics: AtomicReference<Statistics> = AtomicReference(
Statistics()
)
private val statistics = Statistics()
// state that must only be accessed from the thread on the executor
private var state: State
@ -80,11 +77,11 @@ class ServerManager(
DefaultMicrometerMetrics(registry, storage.cacheDirectory)
loginAndStartServer()
var lastBytesSent = statistics.get().bytesSent
var lastBytesSent = statistics.bytesSent.get()
executor.scheduleAtFixedRate(
{
try {
lastBytesSent = statistics.get().bytesSent
lastBytesSent = statistics.bytesSent.get()
val state = this.state
if (state is GracefulStop && state.nextState != Shutdown) {
@ -157,7 +154,7 @@ class ServerManager(
try {
val state = this.state
if (state is Running) {
val currentBytesSent = statistics.get().bytesSent - lastBytesSent
val currentBytesSent = statistics.bytesSent.get() - lastBytesSent
if (settings.serverSettings.maxMebibytesPerHour != 0L && settings.serverSettings.maxMebibytesPerHour * 1024 * 1024 /* MiB to bytes */ < currentBytesSent) {
LOGGER.info { "Stopping image server as hourly bandwidth limit reached" }
@ -220,8 +217,8 @@ class ServerManager(
storage,
remoteSettings,
settings.serverSettings,
statistics,
settings.metricsSettings,
statistics,
registry
).start()

10
src/main/kotlin/mdnet/cache/ImageStorage.kt vendored
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@ -165,6 +165,8 @@ class ImageStorage(
* @return the [Image] associated with the id or null.
*/
fun loadImage(id: String): Image? {
LOGGER.trace { "Loading image $id from cache" }
return try {
// this try catch handles the case where the image has been deleted
// we assume total control over the directory, so this file open
@ -197,6 +199,8 @@ class ImageStorage(
* @return the [Writer] associated with the id or null.
*/
fun storeImage(id: String, metadata: ImageMetadata): Writer? {
LOGGER.trace { "Storing image $id into cache" }
if (id.length < 3) {
throw IllegalArgumentException("id length needs to be at least 3")
}
@ -210,6 +214,8 @@ class ImageStorage(
}
private fun deleteImage(id: String) {
LOGGER.trace { "Deleting image $id from cache" }
database.useTransaction {
val path = getTempPath()
@ -222,7 +228,6 @@ class ImageStorage(
Files.deleteIfExists(path)
} catch (e: IOException) {
LOGGER.trace(e) { "Deleting image failed, ignoring" }
// a failure means the image did not exist
} finally {
database.delete(DbImage) {
@ -354,11 +359,10 @@ class ImageStorage(
companion object {
private val LOGGER = LoggerFactory.getLogger(ImageStorage::class.java)
private val JACKSON: ObjectMapper = jacksonObjectMapper()
private fun String.toCachePath() =
this.substring(0, 3).replace(".(?!$)".toRegex(), "$0 ").split(" ".toRegex()).reversed()
.plus(this).joinToString(File.separator)
private val JACKSON: ObjectMapper = jacksonObjectMapper()
}
}

8
src/main/kotlin/mdnet/data/Statistics.kt
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@ -18,10 +18,8 @@ along with this MangaDex@Home. If not, see <http://www.gnu.org/licenses/>.
*/
package mdnet.data
import com.fasterxml.jackson.databind.PropertyNamingStrategies
import com.fasterxml.jackson.databind.annotation.JsonNaming
import java.util.concurrent.atomic.AtomicLong
@JsonNaming(PropertyNamingStrategies.SnakeCaseStrategy::class)
data class Statistics(
val bytesSent: Long = 0,
class Statistics(
val bytesSent: AtomicLong = AtomicLong(0),
)

86
src/main/kotlin/mdnet/netty/ApplicationNetty.kt
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@ -27,7 +27,9 @@ import io.netty.channel.nio.NioEventLoopGroup
import io.netty.channel.socket.SocketChannel
import io.netty.channel.socket.nio.NioServerSocketChannel
import io.netty.handler.codec.DecoderException
import io.netty.handler.codec.http.*
import io.netty.handler.codec.http.HttpObjectAggregator
import io.netty.handler.codec.http.HttpServerCodec
import io.netty.handler.codec.http.HttpServerKeepAliveHandler
import io.netty.handler.ssl.SslContextBuilder
import io.netty.handler.stream.ChunkedWriteHandler
import io.netty.handler.timeout.ReadTimeoutException
@ -39,11 +41,12 @@ import io.netty.handler.traffic.TrafficCounter
import io.netty.incubator.channel.uring.IOUring
import io.netty.incubator.channel.uring.IOUringEventLoopGroup
import io.netty.incubator.channel.uring.IOUringServerSocketChannel
import io.netty.util.concurrent.DefaultEventExecutorGroup
import io.netty.util.internal.SystemPropertyUtil
import mdnet.Constants
import mdnet.data.Statistics
import mdnet.logging.info
import mdnet.logging.trace
import mdnet.logging.warn
import mdnet.settings.ServerSettings
import mdnet.settings.TlsCert
import org.http4k.core.HttpHandler
@ -59,33 +62,33 @@ import java.net.SocketException
import java.security.PrivateKey
import java.security.cert.CertificateFactory
import java.security.cert.X509Certificate
import java.util.concurrent.atomic.AtomicReference
import java.util.Locale
import javax.net.ssl.SSLException
interface NettyTransport {
val masterGroup: EventLoopGroup
val bossGroup: EventLoopGroup
val workerGroup: EventLoopGroup
val factory: ChannelFactory<ServerChannel>
fun shutdownGracefully() {
masterGroup.shutdownGracefully()
bossGroup.shutdownGracefully()
workerGroup.shutdownGracefully()
}
private class NioTransport : NettyTransport {
override val masterGroup = NioEventLoopGroup()
override val bossGroup = NioEventLoopGroup(1)
override val workerGroup = NioEventLoopGroup()
override val factory = ChannelFactory<ServerChannel> { NioServerSocketChannel() }
}
private class EpollTransport : NettyTransport {
override val masterGroup = EpollEventLoopGroup()
override val bossGroup = EpollEventLoopGroup(1)
override val workerGroup = EpollEventLoopGroup()
override val factory = ChannelFactory<ServerChannel> { EpollServerSocketChannel() }
}
private class IOUringTransport : NettyTransport {
override val masterGroup = IOUringEventLoopGroup()
override val bossGroup = IOUringEventLoopGroup(1)
override val workerGroup = IOUringEventLoopGroup()
override val factory = ChannelFactory<ServerChannel> { IOUringServerSocketChannel() }
}
@ -94,21 +97,24 @@ interface NettyTransport {
private val LOGGER = LoggerFactory.getLogger(NettyTransport::class.java)
fun bestForPlatform(): NettyTransport {
if (IOUring.isAvailable()) {
LOGGER.info("Using IOUring transport")
return IOUringTransport()
} else {
LOGGER.info(IOUring.unavailabilityCause()) {
"IOUring transport not available"
val name = SystemPropertyUtil.get("os.name").toLowerCase(Locale.UK).trim { it <= ' ' }
if (name.startsWith("linux")) {
if (IOUring.isAvailable()) {
LOGGER.info("Using IOUring transport")
return IOUringTransport()
} else {
LOGGER.info(IOUring.unavailabilityCause()) {
"IOUring transport not available"
}
}
}
if (Epoll.isAvailable()) {
LOGGER.info("Using Epoll transport")
return EpollTransport()
} else {
LOGGER.info(Epoll.unavailabilityCause()) {
"Epoll transport not available"
if (Epoll.isAvailable()) {
LOGGER.info("Using Epoll transport")
return EpollTransport()
} else {
LOGGER.info(Epoll.unavailabilityCause()) {
"Epoll transport not available"
}
}
}
@ -118,10 +124,13 @@ interface NettyTransport {
}
}
class Netty(private val tls: TlsCert, private val serverSettings: ServerSettings, private val statistics: AtomicReference<Statistics>) : ServerConfig {
class Netty(
private val tls: TlsCert,
private val serverSettings: ServerSettings,
private val statistics: Statistics
) : ServerConfig {
override fun toServer(httpHandler: HttpHandler): Http4kServer = object : Http4kServer {
private val transport = NettyTransport.bestForPlatform()
private val executor = DefaultEventExecutorGroup(serverSettings.threads)
private lateinit var closeFuture: ChannelFuture
private lateinit var address: InetSocketAddress
@ -130,15 +139,13 @@ class Netty(private val tls: TlsCert, private val serverSettings: ServerSettings
transport.workerGroup, serverSettings.maxKilobitsPerSecond * 1000L / 8L, 0, 50
) {
override fun doAccounting(counter: TrafficCounter) {
statistics.getAndUpdate {
it.copy(bytesSent = it.bytesSent + counter.cumulativeWrittenBytes())
}
statistics.bytesSent.getAndAccumulate(counter.cumulativeWrittenBytes()) { a, b -> a + b }
counter.resetCumulativeTime()
}
}
override fun start(): Http4kServer = apply {
LOGGER.info { "Starting Netty with ${serverSettings.threads} threads" }
LOGGER.info { "Starting Netty!" }
val certs = getX509Certs(tls.certificate)
val sslContext = SslContextBuilder
@ -147,7 +154,7 @@ class Netty(private val tls: TlsCert, private val serverSettings: ServerSettings
.build()
val bootstrap = ServerBootstrap()
bootstrap.group(transport.masterGroup, transport.workerGroup)
bootstrap.group(transport.bossGroup, transport.workerGroup)
.channelFactory(transport.factory)
.childHandler(object : ChannelInitializer<SocketChannel>() {
public override fun initChannel(ch: SocketChannel) {
@ -159,24 +166,28 @@ class Netty(private val tls: TlsCert, private val serverSettings: ServerSettings
ch.pipeline().addLast("burstLimiter", burstLimiter)
ch.pipeline().addLast("readTimeoutHandler", ReadTimeoutHandler(Constants.MAX_READ_TIME_SECONDS))
ch.pipeline().addLast("writeTimeoutHandler", WriteTimeoutHandler(Constants.MAX_WRITE_TIME_SECONDS))
ch.pipeline().addLast(
"readTimeoutHandler",
ReadTimeoutHandler(Constants.MAX_READ_TIME_SECONDS)
)
ch.pipeline().addLast(
"writeTimeoutHandler",
WriteTimeoutHandler(Constants.MAX_WRITE_TIME_SECONDS)
)
ch.pipeline().addLast("streamer", ChunkedWriteHandler())
ch.pipeline().addLast(executor, "handler", Http4kChannelHandler(httpHandler))
ch.pipeline().addLast("handler", Http4kChannelHandler(httpHandler))
ch.pipeline().addLast(
"exceptions",
object : ChannelInboundHandlerAdapter() {
override fun exceptionCaught(ctx: ChannelHandlerContext, cause: Throwable) {
if (cause is SSLException || (cause is DecoderException && cause.cause is SSLException)) {
LOGGER.trace { "Ignored invalid SSL connection" }
LOGGER.trace(cause) { "Exception in pipeline" }
LOGGER.trace(cause) { "Ignored invalid SSL connection" }
} else if (cause is IOException || cause is SocketException) {
LOGGER.info { "User (downloader) abruptly closed the connection" }
LOGGER.trace(cause) { "Exception in pipeline" }
LOGGER.trace(cause) { "User (downloader) abruptly closed the connection" }
} else if (cause !is ReadTimeoutException && cause !is WriteTimeoutException) {
ctx.fireExceptionCaught(cause)
LOGGER.warn(cause) { "Exception in pipeline" }
}
}
}
@ -194,10 +205,9 @@ class Netty(private val tls: TlsCert, private val serverSettings: ServerSettings
override fun stop() = apply {
closeFuture.cancel(false)
transport.shutdownGracefully()
executor.shutdownGracefully()
}
override fun port(): Int = if (serverSettings.port > 0) serverSettings.port else address.port
override fun port(): Int = serverSettings.port
}
companion object {

11
src/main/kotlin/mdnet/server/ImageServer.kt
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@ -69,7 +69,6 @@ import java.time.Clock
import java.time.OffsetDateTime
import java.util.*
import java.util.concurrent.Executors
import java.util.concurrent.atomic.AtomicReference
private val LOGGER = LoggerFactory.getLogger(ImageServer::class.java)
private val JACKSON: ObjectMapper = jacksonObjectMapper()
@ -125,7 +124,7 @@ class ImageServer(
Response(Status.NOT_MODIFIED)
.header("Last-Modified", lastModified)
} else {
LOGGER.info { "Request for $sanitizedUri hit cache" }
LOGGER.info { "Request for $sanitizedUri is being served" }
respondWithImage(
BufferedInputStream(image.stream),
@ -136,8 +135,6 @@ class ImageServer(
}
private fun Request.handleCacheMiss(sanitizedUri: String, imageId: String): Response {
LOGGER.info { "Request for $sanitizedUri missed cache" }
val mdResponse = client(Request(Method.GET, sanitizedUri))
if (mdResponse.status != Status.OK) {
@ -234,8 +231,8 @@ fun getServer(
storage: ImageStorage,
remoteSettings: RemoteSettings,
serverSettings: ServerSettings,
statistics: AtomicReference<Statistics>,
metricsSettings: MetricsSettings,
statistics: Statistics,
registry: PrometheusMeterRegistry,
): Http4kServer {
val apache = ApacheClient(
@ -261,8 +258,6 @@ fun getServer(
val client =
ClientFilters.SetBaseUriFrom(remoteSettings.imageServer)
.then(ClientFilters.MicrometerMetrics.RequestCounter(registry))
.then(ClientFilters.MicrometerMetrics.RequestTimer(registry))
.then(apache)
val imageServer = ImageServer(
@ -274,7 +269,7 @@ fun getServer(
FunctionCounter.builder(
"client_sent_bytes",
statistics,
{ it.get().bytesSent.toDouble() }
{ it.bytesSent.get().toDouble() }
).register(registry)
val verifier = tokenVerifier(

1
src/main/kotlin/mdnet/settings/ClientSettings.kt
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@ -41,7 +41,6 @@ data class ServerSettings(
val externalMaxKilobitsPerSecond: Long = 0,
val maxMebibytesPerHour: Long = 0,
val port: Int = 443,
val threads: Int = 4,
)
@JsonNaming(PropertyNamingStrategies.SnakeCaseStrategy::class)

6
src/main/resources/logback.xml
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@ -1,7 +1,7 @@
<configuration>
<appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
<filter class="ch.qos.logback.classic.filter.ThresholdFilter">
<level>${file-level:-WARN}</level>
<level>${file-level:-${root-level:-WARN}}}</level>
</filter>
<file>log/latest.log</file>
@ -20,7 +20,7 @@
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<filter class="ch.qos.logback.classic.filter.ThresholdFilter">
<level>${stdout-level:-INFO}</level>
<level>${stdout-level:-${root-level:-INFO}}</level>
</filter>
<encoder>
@ -29,7 +29,7 @@
</encoder>
</appender>
<root level="TRACE">
<root level="${root-level:-INFO}">
<appender-ref ref="STDOUT"/>
<appender-ref ref="FILE"/>
</root>