im running a nexus (OSS 3.36.0-01) instance which hosts some maven artefacts for my application (Apache Flink Jobs).
These Jar-files needs to be downloaded by a java a application (it's a flink k8s operator).
Using the nexus-internal swagger UI on /v1/search/assets i've build a query which contains the desired jar only.
https://<my-nexus-url>/service/rest/v1/search/assets?repository=maven-releases&maven.groupId=de.ilem0n.ngbm&maven.artifactId=kafka-health-check&maven.baseVersion=1.0.0&maven.extension=jar
Result:
{
"items": [
{
"downloadUrl": "https://<my-nexus-url>/repository/maven-releases/de/ilem0n/ngbm/kafka-health-check/1.0.0/kafka-health-check-1.0.0.jar",
"path": "de/ilem0n/ngbm/kafka-health-check/1.0.0/kafka-health-check-1.0.0.jar",
"id": "<artefact-id>",
"repository": "maven-releases",
"format": "maven2",
"checksum": {
"sha1": "<checksum>",
"sha256": "<checksum>",
"sha512": "<checksum>",
"md5": "<checksum>"
},
"contentType": "application/java-archive",
"lastModified": "2021-12-28T12:11:28.622+00:00",
"maven2": {
"extension": "jar",
"groupId": "de.ilem0n.ngbm",
"artifactId": "kafka-health-check",
"version": "1.0.0"
}
}],
"continuationToken": null
}
The same query on /v1/search/assets/download from postman or even in the browser runs fine and gives me the correct jar-file back.
In my java application i use the following code to do the same:
String url = "https://<my-nexus-url>/service/rest/v1/search/assets?repository=maven-releases&maven.groupId=de.ilem0n.ngbm&maven.artifactId=kafka-health-check&maven.baseVersion=1.0.0&maven.extension=jar";
Authenticator auth = new Authenticator() {
public Request authenticate(Route route, Response response) throws IOException {
String credential = Credentials.basic(username, password);
return response.request().newBuilder().header("Authorization", credential).build();
}
};
OkHttpClient httpClient = new OkHttpClient.Builder().authenticator(auth).build();
Request.Builder requestBuilder = new Request.Builder();
requestBuilder.url(url);
Response response = client.newCall(requestBuilder.build()).execute();
But here I get back an empty list in the response body:
{
"items" : [ ],
"continuationToken" : null
}
Does anyone has a hint what's wrong here or a better solution to download a single jar-file from a nexus maven repository programmatically? (Background here is that this jar-file will be uploaded to the Flink REST API and therefore it needs to be present on the machine)
POM-File:
<?xml version="1.0"?>
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<modelVersion>4.0.0</modelVersion>
<groupId>de.ilem0n.ngbm</groupId>
<artifactId>flink-operator-next</artifactId>
<version>0.1.2</version>
<properties>
<compiler-plugin.version>3.8.1</compiler-plugin.version>
<maven.compiler.parameters>true</maven.compiler.parameters>
<maven.compiler.source>11</maven.compiler.source>
<maven.compiler.target>11</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<quarkus.platform.version>2.6.0.CR1</quarkus.platform.version>
<surefire-plugin.version>3.0.0-M5</surefire-plugin.version>
<flink-client.version>1.0.4</flink-client.version>
<quarkus-sdk.version>2.0.2</quarkus-sdk.version>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-bom</artifactId>
<version>${quarkus.platform.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-core</artifactId>
<version>2.6.0.CR1</version>
</dependency>
<!-- Operator SDK -->
<dependency>
<groupId>io.quarkiverse.operatorsdk</groupId>
<artifactId>quarkus-operator-sdk</artifactId>
<version>${quarkus-sdk.version}</version>
</dependency>
<dependency>
<groupId>com.nextbreakpoint</groupId>
<artifactId>com.nextbreakpoint.flinkclient</artifactId>
<version>${flink-client.version}</version>
</dependency>
<dependency>
<groupId>com.squareup.okio</groupId>
<artifactId>okio</artifactId>
<version>2.7.0</version>
</dependency>
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-kafka-client</artifactId>
</dependency>
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-smallrye-health</artifactId>
</dependency>
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-kubernetes-config</artifactId>
</dependency>
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-kubernetes</artifactId>
</dependency>
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-smallrye-context-propagation</artifactId>
</dependency>
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-smallrye-metrics</artifactId>
</dependency>
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-arc</artifactId>
</dependency>
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-junit5</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.22</version>
<scope>compile</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>io.quarkus.platform</groupId>
<artifactId>quarkus-maven-plugin</artifactId>
<version>${quarkus.platform.version}</version>
<extensions>true</extensions>
<executions>
<execution>
<goals>
<goal>build</goal>
<goal>generate-code</goal>
<goal>generate-code-tests</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>${compiler-plugin.version}</version>
<configuration>
<parameters>${maven.compiler.parameters}</parameters>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>${surefire-plugin.version}</version>
<configuration>
<systemPropertyVariables>
<java.util.logging.manager>org.jboss.logmanager.LogManager</java.util.logging.manager>
<maven.home>${maven.home}</maven.home>
</systemPropertyVariables>
</configuration>
</plugin>
</plugins>
</build>
<profiles>
<profile>
<id>native</id>
<activation>
<property>
<name>native</name>
</property>
</activation>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-failsafe-plugin</artifactId>
<version>${surefire-plugin.version}</version>
<executions>
<execution>
<goals>
<goal>integration-test</goal>
<goal>verify</goal>
</goals>
<configuration>
<systemPropertyVariables>
<native.image.path>${project.build.directory}/${project.build.finalName}-runner</native.image.path> <java.util.logging.manager>org.jboss.logmanager.LogManager</java.util.logging.manager>
<maven.home>${maven.home}</maven.home>
</systemPropertyVariables>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
<properties>
<quarkus.package.type>native</quarkus.package.type>
</properties>
</profile>
</profiles>
</project>
