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Detect broken macOS localhost resolution and tell the user how to fix it.

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This commit is contained in:
Mike Hearn
2017-05-08 13:27:07 +02:00
parent b5dea88b39
commit 8016bc5fcd
3 changed files with 57 additions and 3 deletions
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32
node/src/main/kotlin/net/corda/node/Corda.kt
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@ -3,6 +3,7 @@
package net.corda.node
import com.jcabi.manifests.Manifests
import com.sun.org.apache.xml.internal.serializer.utils.Utils.messages
import com.typesafe.config.ConfigException
import joptsimple.OptionException
import net.corda.core.*
@ -22,8 +23,9 @@ import java.io.*
import java.lang.management.ManagementFactory
import java.net.InetAddress
import java.nio.file.Paths
import java.util.Locale
import java.util.*
import kotlin.system.exitProcess
import kotlin.system.measureTimeMillis
private var renderBasicInfoToConsole = true
@ -35,6 +37,7 @@ fun printBasicNodeInfo(description: String, info: String? = null) {
}
val LOGS_DIRECTORY_NAME = "logs"
private val log by lazy { LoggerFactory.getLogger("Main") }
private fun initLogging(cmdlineOptions: CmdLineOptions) {
val loggingLevel = cmdlineOptions.loggingLevel.name.toLowerCase(Locale.ENGLISH)
@ -90,7 +93,6 @@ fun main(args: Array<String>) {
drawBanner(versionInfo)
val log = LoggerFactory.getLogger("Main")
printBasicNodeInfo("Logs can be found in", System.getProperty("log-path"))
val conf = try {
@ -123,7 +125,7 @@ fun main(args: Array<String>) {
log.info("bootclasspath: ${info.bootClassPath}")
log.info("classpath: ${info.classPath}")
log.info("VM ${info.vmName} ${info.vmVendor} ${info.vmVersion}")
log.info("Machine: ${InetAddress.getLocalHost().hostName}")
checkForSlowLocalhostResolution()
log.info("Working Directory: ${cmdlineOptions.baseDirectory}")
val agentProperties = sun.misc.VMSupport.getAgentProperties()
if (agentProperties.containsKey("sun.jdwp.listenerAddress")) {
@ -164,6 +166,30 @@ fun main(args: Array<String>) {
exitProcess(0)
}
private fun checkForSlowLocalhostResolution() {
val start = System.currentTimeMillis()
val hostName: String = InetAddress.getLocalHost().hostName
val elapsed = System.currentTimeMillis() - start
if (elapsed > 1000 && hostName.endsWith(".local")) {
// User is probably on macOS and experiencing this problem: http://stackoverflow.com/questions/10064581/how-can-i-eliminate-slow-resolving-loading-of-localhost-virtualhost-a-2-3-secon
//
// Also see https://bugs.openjdk.java.net/browse/JDK-8143378
val messages = listOf(
"Your computer took over a second to resolve localhost due an incorrect configuration. Corda will work but start very slowly until this is fixed. ",
"Please see https://docs.corda.net/getting-set-up-fault-finding.html#slow-localhost-resolution for information on how to fix this. ",
"It will only take a few seconds for you to resolve."
)
log.warn(messages.joinToString(""))
Emoji.renderIfSupported {
print(Ansi.ansi().fgBrightRed())
messages.forEach {
println("${Emoji.sleepingFace}$it")
}
print(Ansi.ansi().reset())
}
}
}
private fun assertCanNormalizeEmptyPath() {
// Check we're not running a version of Java with a known bug: https://github.com/corda/corda/issues/83
try {