Only check for the latest release version number on GitHub every 10 minutes.

modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/misc/GithubApi2.kt

@@ -1,8 +1,10 @@
 package com.beust.kobalt.misc
 
 import com.beust.kobalt.KobaltException
+import com.beust.kobalt.api.Kobalt
 import com.beust.kobalt.internal.DocUrl
 import com.beust.kobalt.internal.KobaltSettings
+import com.beust.kobalt.internal.build.VersionCheckTimestampFile
 import com.beust.kobalt.maven.Http
 import com.beust.kobalt.maven.aether.Exceptions
 import com.google.gson.Gson
@@ -16,6 +18,8 @@ import retrofit2.converter.gson.GsonConverterFactory
 import retrofit2.http.*
 import rx.Observable
 import java.io.File
+import java.time.Duration
+import java.time.Instant
 import java.util.*
 import java.util.concurrent.Callable
 import java.util.concurrent.Future
@@ -110,7 +114,11 @@ class GithubApi2 @Inject constructor(
         get() {
             val callable = Callable<String> {
                 var result = "0"
-
+                if (Duration.ofMinutes(10L) >
+                        Duration.between(VersionCheckTimestampFile.timestamp, Instant.now())) {
+                    kobaltLog(2, "Skipping GitHub latest release check, too soon.")
+                    result = Kobalt.version
+                } else {
                     val username = localProperties.getNoThrows(PROPERTY_USERNAME, DOC_URL)
                     val accessToken = localProperties.getNoThrows(PROPERTY_ACCESS_TOKEN, DOC_URL)
                     try {
@@ -153,6 +161,7 @@ class GithubApi2 @Inject constructor(
 //                    kobaltLog(2, "Couldn't retrieve releases from github, ${error.message ?: e}: "
 //                            + details?.code + " field: " + details?.field)
                     }
+                }
                 result
             }