Neo4j“No dependency满足类型org.neo4j.kernel.api.index.SchemaIndexProvider” [英] Neo4j "No dependency satisfies type class org.neo4j.kernel.api.index.SchemaIndexProvider"

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问题描述

Neo4j社区2.3.3 Linux（Ubuntu 14.04）试图运行一个消费Kafka主题的Java应用程序，在查询Neo4j时处理它的消息并写入它们到另一个Kafka话题。

  hduser @ ubuntu：〜$ java -jar gradle1-0.1.0.jar localhost：9092 musicgrp raw -events enriched-events bad-events /home/ubuntu/GeoLiteCity.dat 
 SLF4J：未能加载类org.slf4j.impl.StaticLoggerBinder。 
 SLF4J：默认为无操作（NOP）记录器实现
 SLF4J：有关详细信息，请参阅http://www.slf4j.org/codes.html#StaticLoggerBinder。 
线程main中的异常java.lang.RuntimeException：启动org.neo4j.kernel.impl.factory.CommunityFacadeFactory时出错，/home/hduser/neo4jdb2/data/graph.db 
 at org.neo4j .kernel.impl.factory.GraphDatabaseFacadeFactory.newFacade（GraphDatabaseFacadeFactory.java:143）
 at org.neo4j.kernel.impl.factory.CommunityFacadeFactory.newFacade（CommunityFacadeFactory.java:43）
 at org.neo4j .kernel.impl.factory.GraphDatabaseFacadeFactory.newFacade（GraphDatabaseFacadeFactory.java:108）
 at org.neo4j.graphdb.factory.GraphDatabaseFactory.newDatabase（GraphDatabaseFactory.java:129）
 at org.neo4j.graphdb .factory.GraphDatabaseFactory $ 1.newDatabase（GraphDatabaseFactory.java:117）
 at org.neo4j.graphdb.factory.GraphDatabaseBuilder.newGraphDatabase（GraphDatabaseBuilder.java:185）
 at music.StreamApp.main（StreamApp。 java：40）
导致：org.neo4j.kernel.lifecycle.LifecycleException：组件'org.neo4j.kernel.NeoStoreDataSource@1d606256'成功合理地初始化，但未能开始。请参阅附加的原因异常。 
 at org.neo4j.kernel.lifecycle.LifeSupport $ LifecycleInstance.start（LifeSupport.java:462）
 at org.neo4j.kernel.lifecycle.LifeSupport.start（LifeSupport.java:111）
 at org.neo4j.kernel.impl.transaction.state.DataSourceManager.start（DataSourceManager.java:112）
 at org.neo4j.kernel.lifecycle.LifeSupport $ LifecycleInstance.start（LifeSupport.java:452） 
 at org.neo4j.kernel.lifecycle.LifeSupport.start（LifeSupport.java:111）
 at org.neo4j.kernel.impl.factory.GraphDatabaseFacadeFactory.newFacade（GraphDatabaseFacadeFactory.java:139）
 ... 6 more 
导致：org.neo4j.kernel.impl.util.UnsatisfiedDependencyException：没有依赖关系满足类型org.neo4j.kernel.api.index.SchemaIndexProvider 
 at org.neo4j .kernel.impl.util.Dependencies.resolveDependency（Dependencies.java:78）
 at org.neo4j.kernel.impl.util.Dependencies.resolveDependency（Dependencies.java:74）
 at org.neo4j .kernel.NeoStoreDataSource.start（NeoStoreDataS 
 at org.neo4j.kernel.lifecycle.LifeSupport $ LifecycleInstance.start（LifeSupport.java:452）
 ... 11 more

这是我的 gradle.build ，我读了一些关于将Neo4j罐子从包中取出的帖子...到它的罐子 - classpath ...我是新来的Gradle，这是相关的吗？



<$ p $应用插件：'java'
apply插件：'application'
sourceCompatibility ='1.8'
mainClassName ='music.StreamApp'
repositories {
mavenCentral（）
}
version ='0.1.0'
dependencies {
compile'org.apache.kafka：kafka-clients：0.9.0.0'
compile'c​​om.maxmind.geoip：geoip-api：1.2.14'
compile'c​​om.fasterxml.jackson.core：jackson-databind：2.6.3'
compile'org.slf4j ：slf4j-api：1.7.5'
compile'org.neo4j：neo4j：2.3.3'
}
jar {// c
manifest {
attributes 主类'：mainClassName
}
from {
configurations.compile.collect {
it.isDirectory（）？ it：zipTree
$ b $ {
不包括META-INF / *。SF
不包括META-INF / *。DSA
排除META-INF / * .RSA
}
}


解决方案

我怀疑你的jar中没有 META-INF / services / org.neo4j.kernel.extension.KernelExtensionFactory 文件正确。内部Neo4j使用JVM的ServiceLoader来加载它的组件。



参见 https://github.com/neo4j/neo4j/blob/2.3/community/lucene -index / src / main / resources / META-INF / services / org.neo4j.kernel.extension.KernelExtensionFactory 。



我假设解决此问题的正确方法不是通过更改Gradle的默认jar任务，而是使用正确处理 META-INF 文件的插件。我对影子插件做了一些很好的体验。


Neo4j Community 2.3.3 Linux (Ubuntu 14.04)

Trying to run a Java app which consumes a Kafka topic, process its messages while querying Neo4j, and writes them to another Kafka topic.

hduser@ubuntu:~$ java -jar gradle1-0.1.0.jar localhost:9092 musicgrp raw-events enriched-events bad-events /home/ubuntu/GeoLiteCity.dat
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
Exception in thread "main" java.lang.RuntimeException: Error starting org.neo4j.kernel.impl.factory.CommunityFacadeFactory, /home/hduser/neo4jdb2/data/graph.db
    at org.neo4j.kernel.impl.factory.GraphDatabaseFacadeFactory.newFacade(GraphDatabaseFacadeFactory.java:143)
    at org.neo4j.kernel.impl.factory.CommunityFacadeFactory.newFacade(CommunityFacadeFactory.java:43)
    at org.neo4j.kernel.impl.factory.GraphDatabaseFacadeFactory.newFacade(GraphDatabaseFacadeFactory.java:108)
    at org.neo4j.graphdb.factory.GraphDatabaseFactory.newDatabase(GraphDatabaseFactory.java:129)
    at org.neo4j.graphdb.factory.GraphDatabaseFactory$1.newDatabase(GraphDatabaseFactory.java:117)
    at org.neo4j.graphdb.factory.GraphDatabaseBuilder.newGraphDatabase(GraphDatabaseBuilder.java:185)
    at music.StreamApp.main(StreamApp.java:40)
Caused by: org.neo4j.kernel.lifecycle.LifecycleException: Component 'org.neo4j.kernel.NeoStoreDataSource@1d606256' was successfully initialized, but failed to start. Please see attached cause exception.
    at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:462)
    at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:111)
    at org.neo4j.kernel.impl.transaction.state.DataSourceManager.start(DataSourceManager.java:112)
    at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:452)
    at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:111)
    at org.neo4j.kernel.impl.factory.GraphDatabaseFacadeFactory.newFacade(GraphDatabaseFacadeFactory.java:139)
    ... 6 more
Caused by: org.neo4j.kernel.impl.util.UnsatisfiedDependencyException: No dependency satisfies type class org.neo4j.kernel.api.index.SchemaIndexProvider
    at org.neo4j.kernel.impl.util.Dependencies.resolveDependency(Dependencies.java:78)
    at org.neo4j.kernel.impl.util.Dependencies.resolveDependency(Dependencies.java:74)
    at org.neo4j.kernel.NeoStoreDataSource.start(NeoStoreDataSource.java:507)
    at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:452)
    ... 11 more

This is my gradle.build, I read some post about keeping Neo4j jars out of the bundle ... by pointing to its jars with --classpath ... I'm new to Gradle, is this relevant ?

apply plugin: 'java'
apply plugin: 'application'
sourceCompatibility = '1.8' 
mainClassName = 'music.StreamApp'
repositories {
    mavenCentral()
}
version = '0.1.0'
dependencies { 
    compile 'org.apache.kafka:kafka-clients:0.9.0.0'
    compile 'com.maxmind.geoip:geoip-api:1.2.14'
    compile 'com.fasterxml.jackson.core:jackson-databind:2.6.3'
    compile 'org.slf4j:slf4j-api:1.7.5'
    compile 'org.neo4j:neo4j:2.3.3'
}
jar { // c
manifest {
    attributes 'Main-Class': mainClassName
}
from {
    configurations.compile.collect {
        it.isDirectory() ? it : zipTree(it)
    }
} {
    exclude "META-INF/*.SF"
    exclude "META-INF/*.DSA"
    exclude "META-INF/*.RSA"
}
}

解决方案

My suspicion is that you don't have the META-INF/services/org.neo4j.kernel.extension.KernelExtensionFactory files in your jar correctly. Internally Neo4j uses JVM's ServiceLoader to load its components.

See https://github.com/neo4j/neo4j/blob/2.3/community/lucene-index/src/main/resources/META-INF/services/org.neo4j.kernel.extension.KernelExtensionFactory for the potentially missing piece.

I assume the right way to solve this is not by changing Gradle's default jar task, instead use a plugin that handles META-INF files correctly. I've made some good experiences with the shadow plugin.

这篇关于Neo4j“No dependency满足类型org.neo4j.kernel.api.index.SchemaIndexProvider”的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！

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