问题描述
<features xmlns="http://karaf.apache.org/xmlns/features/v1.0.0">
<repository>mvn:com.eclipsesource.jaxrs/features/4.3/xml/features</repository>
<feature name="FeatureA" version="1.0.0" install="auto">
<feature>FeatureB</feature>
</feature>
在大多数情况下，两个KAR都已正确部署。偶尔我会遇到一个问题，即功能B仅在KaraF控制台的list命令中安装并列出。但是功能A在（部署文件夹中）。
我遍历了KaraF源代码，并发现了 如果功能A首先出现，它将在 DelayedDeployerThread 中等待2毫秒。安装功能B后，它将变量cancel设置为true，这样就退出了循环，并且功能A继续进行安装。
2020-09-29T11:46:36.122+0200 | INFO | .4/instances/test/deploy | o.a.k.d.k.KarartifactInstaller | eployer.kar.KarartifactInstaller 48 | 39 - org.apache.karaf.deployer.kar - 4.1.4 | Installing KAR file /opt/osgi/apache-custom-karaf-4.1.4/instances/test/deploy/FeatureA.kar
2020-09-29T11:46:36.123+0200 | DEBUG | .4/instances/test/deploy | o.a.k.k.i.KarServiceImpl | araf.kar.internal.KarServiceImpl 93 | 50 - org.apache.karaf.kar.core - 4.1.4 | Installing KAR test from file:/opt/osgi/apache-custom-karaf-4.1.4/instances/test/deploy/FeatureA.kar
2020-09-29T11:46:36.124+0200 | DEBUG | .4/instances/test/deploy | o.a.k.k.i.KarServiceImpl | rg.apache.karaf.kar.internal.Kar 96 | 50 - org.apache.karaf.kar.core - 4.1.4 | Uncompress the KAR file file:/opt/osgi/apache-custom-karaf-4.1.4/instances/test/deploy/FeatureA.kar into directory /opt/osgi/apache-custom-karaf-4.1.4/instances/test/data/kar/FeatureA
2020-09-29T11:46:36.124+0200 | DEBUG | .4/instances/test/deploy | o.a.k.k.i.KarServiceImpl | rg.apache.karaf.kar.internal.Kar 157 | 50 - org.apache.karaf.kar.core - 4.1.4 | Creating directory test
2020-09-29T11:46:37.203+0200 | INFO | .4/instances/test/deploy | o.a.k.k.i.KarServiceImpl | araf.kar.internal.KarServiceImpl 267 | 50 - org.apache.karaf.kar.core - 4.1.4 | Added feature repository 'file:/opt/osgi/apache-custom-karaf-4.1.4/instances/test/data/kar/test/featureA/features_A.xml'
2020-09-29T11:46:37.209+0200 | DEBUG | .4/instances/test/deploy | o.a.k.f.i.s.Blacklist | tures.internal.service.Blacklist 139 | 10 - org.apache.karaf.features.core - 4.1.4 | Unable to load blacklist bundles list
2020-09-29T11:46:37.210+0200 | WARN | .4/instances/test/deploy | o.a.k.k.i.KarServiceImpl | araf.kar.internal.KarServiceImpl 121 | 50 - org.apache.karaf.kar.core - 4.1.4 | Feature dependency FeatureB/0.0.0 is not available. Kar deployment postponed to see if it is about to be deployed
2020-09-29T11:46:37.212+0200 | INFO | .4/instances/test/deploy | o.a.k.d.k.KarartifactInstaller | eployer.kar.KarartifactInstaller 48 | 39 - org.apache.karaf.deployer.kar - 4.1.4 | Installing KAR file /opt/osgi/apache-custom-karaf-4.1.4/instances/test/deploy/FeatureB.kar
2020-09-29T11:46:37.213+0200 | DEBUG | Delayed kar deployment | o.a.k.k.i.KarServiceImpl | araf.kar.internal.KarServiceImpl 287 | 50 - org.apache.karaf.kar.core - 4.1.4 | noAutoRefreshBundles is false
2020-09-29T11:46:37.212+0200 | DEBUG | .4/instances/test/deploy | o.a.k.k.i.KarServiceImpl | araf.kar.internal.KarServiceImpl 93 | 50 - org.apache.karaf.kar.core - 4.1.4 | Installing KAR FeatureB from file:/opt/osgi/apache-custom-karaf-4.1.4/instances/test/deploy/FeatureB.kar
2020-09-29T11:46:37.213+0200 | DEBUG | Delayed kar deployment | o.a.k.k.i.KarServiceImpl | araf.kar.internal.KarServiceImpl 291 | 50 - org.apache.karaf.kar.core - 4.1.4 | noAutoStartBundles is false (default false)
2020-09-29T11:46:37.215+0200 | DEBUG | .4/instances/test/deploy | o.a.k.k.i.KarServiceImpl | rg.apache.karaf.kar.internal.Kar 96 | 50 - org.apache.karaf.kar.core - 4.1.4 | Uncompress the KAR file file:/opt/osgi/apache-custom-karaf-4.1.4/instances/test/deploy/FeatureB.kar into directory /opt/osgi/apache-custom-karaf-4.1.4/instances/test/data/kar/FeatureB
2020-09-29T11:46:37.216+0200 | DEBUG | .4/instances/test/deploy | o.a.k.k.i.KarServiceImpl | rg.apache.karaf.kar.internal.Kar 157 | 50 - org.apache.karaf.kar.core - 4.1.4 | Creating directory FeatureB
2020-09-29T11:46:37.216+0200 | INFO | Delayed kar deployment | o.a.k.f.i.s.FeaturesServiceImpl | rnal.service.FeaturesServiceImpl 1286 | 10 - org.apache.karaf.features.core - 4.1.4 | Adding features: FeatureA/[1.0.0,1.0.0]
2020-09-29T11:46:37.217+0200 | DEBUG | .4/instances/test/deploy | o.a.k.k.i.KarServiceImpl | rg.apache.karaf.kar.internal.Kar 157 | 50 - org.apache.karaf.kar.core - 4.1.4 | Creating directory FeatureB
2020-09-29T11:46:37.217+0200 | DEBUG | .4/instances/test/deploy | o.a.k.k.i.KarServiceImpl | rg.apache.karaf.kar.internal.Kar 157 | 50 - org.apache.karaf.kar.core - 4.1.4 | Creating directory bundles
2020-09-29T11:46:37.219+0200 | DEBUG | features-1-thread-1 | o.a.k.f.i.s.Overrides | tures.internal.service.Overrides 130 | 10 - org.apache.karaf.features.core - 4.1.4 | Unable to load overrides bundles list
在此SimpleDownloadTask之后，尝试安装功能A中的所有捆绑软件。 最终陷入错误
2020-09-29T11:46:37.901+0200 | WARN | Delayed kar deployment | o.a.k.k.i.KarServiceImpl | araf.kar.internal.KarServiceImpl 297 | 50 - org.apache.karaf.kar.core - 4.1.4 | Unable to install Kar feature featureA/1.0.0
预期的行为是它应该等待功能B完成并开始安装。同样的事情发生 成功的案例中
2020-09-28T19:18:07.846+0200 | INFO | .4/instances/test/deploy | o.a.k.d.k.KarartifactInstaller | eployer.kar.KarartifactInstaller 75 | 39 - org.apache.karaf.deployer.kar - 4.1.4 | Found a .kar file to deploy.
2020-09-28T19:18:07.846+0200 | INFO | .4/instances/test/deploy | o.a.k.d.k.KarartifactInstaller | eployer.kar.KarartifactInstaller 75 | 39 - org.apache.karaf.deployer.kar - 4.1.4 | Found a .kar file to deploy.
2020-09-28T19:18:07.846+0200 | INFO | .4/instances/test/deploy | o.a.k.d.k.KarartifactInstaller | eployer.kar.KarartifactInstaller 48 | 39 - org.apache.karaf.deployer.kar - 4.1.4 | Installing KAR file /opt/osgi/apache-custom-karaf-4.1.4/instances/test/deploy/featureA.kar
2020-09-28T19:18:07.847+0200 | DEBUG | .4/instances/test/deploy | o.a.k.k.i.KarServiceImpl | araf.kar.internal.KarServiceImpl 93 | 50 - org.apache.karaf.kar.core - 4.1.4 | Installing KAR test from file:/opt/osgi/apache-custom-karaf-4.1.4/instances/test/deploy/FeatureA.kar
2020-09-28T19:18:07.848+0200 | DEBUG | .4/instances/test/deploy | o.a.k.k.i.KarServiceImpl | rg.apache.karaf.kar.internal.Kar 96 | 50 - org.apache.karaf.kar.core - 4.1.4 | Uncompress the KAR file file:/opt/osgi/apache-custom-karaf-4.1.4/instances/test/deploy/FeatureA.kar into directory /opt/osgi/apache-custom-karaf-4.1.4/instances/test/data/kar/test
2020-09-28T19:18:07.848+0200 | DEBUG | .4/instances/test/deploy | o.a.k.k.i.KarServiceImpl | rg.apache.karaf.kar.internal.Kar 157 | 50 - org.apache.karaf.kar.core - 4.1.4 | Creating directory test
2020-09-28T19:18:08.113+0200 | DEBUG | .4/instances/test/deploy | o.a.k.k.i.KarServiceImpl | rg.apache.karaf.kar.internal.Kar 157 | 50 - org.apache.karaf.kar.core - 4.1.4 | Creating directory bundles
2020-09-28T19:18:08.253+0200 | DEBUG | .4/instances/test/deploy | o.a.k.k.i.KarServiceImpl | rg.apache.karaf.kar.internal.Kar 157 | 50 - org.apache.karaf.kar.core - 4.1.4 | Creating directory featureA
2020-09-28T19:18:08.926+0200 | INFO | .4/instances/test/deploy | o.a.k.k.i.KarServiceImpl | araf.kar.internal.KarServiceImpl 267 | 50 - org.apache.karaf.kar.core - 4.1.4 | Added feature repository 'file:/opt/osgi/apache-custom-karaf-4.1.4/instances/test/data/kar/test/featureA/featuresA.xml'
2020-09-28T19:18:08.934+0200 | WARN | .4/instances/test/deploy | o.a.k.k.i.KarServiceImpl | araf.kar.internal.KarServiceImpl 121 | 50 - org.apache.karaf.kar.core - 4.1.4 | Feature dependency featureB/0.0.0 is not available. Kar deployment postponed to see if it is about to be deployed
2020-09-28T19:18:08.936+0200 | INFO | .4/instances/test/deploy | o.a.k.d.k.KarartifactInstaller | eployer.kar.KarartifactInstaller 48 | 39 - org.apache.karaf.deployer.kar - 4.1.4 | Installing KAR file /opt/osgi/apache-custom-karaf-4.1.4/instances/test/deploy/featureB.kar
2020-09-28T19:18:08.936+0200 | DEBUG | .4/instances/test/deploy | o.a.k.k.i.KarServiceImpl | araf.kar.internal.KarServiceImpl 93 | 50 - org.apache.karaf.kar.core - 4.1.4 | Installing KAR featureB from file:/opt/osgi/apache-custom-karaf-4.1.4/instances/test/deploy/featureB.kar
2020-09-28T19:18:08.937+0200 | DEBUG | .4/instances/test/deploy | o.a.k.k.i.KarServiceImpl | rg.apache.karaf.kar.internal.Kar 96 | 50 - org.apache.karaf.kar.core - 4.1.4 | Uncompress the KAR file file:/opt/osgi/apache-custom-karaf-4.1.4/instances/test/deploy/featureB.kar into directory /opt/osgi/apache-custom-karaf-4.1.4/instances/test/data/kar/featureB
2020-09-28T19:18:08.937+0200 | DEBUG | .4/instances/test/deploy | o.a.k.k.i.KarServiceImpl | rg.apache.karaf.kar.internal.Kar 157 | 50 - org.apache.karaf.kar.core - 4.1.4 | Creating directory featureB
2020-09-28T19:18:08.938+0200 | DEBUG | .4/instances/test/deploy | o.a.k.k.i.KarServiceImpl | rg.apache.karaf.kar.internal.Kar 157 | 50 - org.apache.karaf.kar.core - 4.1.4 | Creating directory featureB
2020-09-28T19:18:08.938+0200 | DEBUG | .4/instances/test/deploy | o.a.k.k.i.KarServiceImpl | rg.apache.karaf.kar.internal.Kar 157 | 50 - org.apache.karaf.kar.core - 4.1.4 | Creating directory bundles
2020-09-28T19:18:10.866+0200 | DEBUG | .4/instances/test/deploy | o.a.k.f.i.s.Blacklist | tures.internal.service.Blacklist 139 | 10 - org.apache.karaf.features.core - 4.1.4 | Unable to load blacklist bundles list
2020-09-28T19:18:10.869+0200 | INFO | .4/instances/test/deploy | o.a.k.k.i.KarServiceImpl | araf.kar.internal.KarServiceImpl 267 | 50 - org.apache.karaf.kar.core - 4.1.4 | Added feature repository 'file:/opt/osgi/apache-custom-karaf-4.1.4/instances/test/data/kar/featureB/featureB/featuresB.xml'
2020-09-28T19:18:10.871+0200 | DEBUG | .4/instances/test/deploy | o.a.k.k.i.KarServiceImpl | araf.kar.internal.KarServiceImpl 287 | 50 - org.apache.karaf.kar.core - 4.1.4 | noAutoRefreshBundles is false
2020-09-28T19:18:10.871+0200 | DEBUG | .4/instances/test/deploy | o.a.k.k.i.KarServiceImpl | araf.kar.internal.KarServiceImpl 291 | 50 - org.apache.karaf.kar.core - 4.1.4 | noAutoStartBundles is false (default false)
不确定为什么失败不会在循环中等待并继续进行功能A的安装，时间差也为1毫秒。 我们正在使用maven插件生成功能文件，并且有一个属性“ 先决条件”的文档，该文档要求功能B在功能A之前完成（启动/激活）。 任何帮助将不胜感激。
karServiceimpl.java的解决方法
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