Add runtime dependency management to Container for TCK connector isolation

[Copilot]

TCK containers require runtime dependency resolution based on configuration (e.g., JDBC drivers selected at runtime), with each container maintaining isolated dependency versions. The existing infrastructure only supported static dependencies from POM files.

Changes

Container.java

• Added dynamicDependencies collection tracked separately from static dependencies
• New methods: addDynamicDependency(), addDynamicDependencies(), getDynamicDependencies()
• Modified findDependencies() and findExistingClasspathFiles() to stream-concat static + dynamic deps
• Automatic classloader reload on dependency addition

Testing

• 6 new tests validating: single/batch addition, multi-container isolation, Maven GAV loading, flat lib/ folder loading
• All 50 tests pass (44 existing + 6 new)

Documentation

• DYNAMIC_DEPENDENCIES.md with usage patterns and @DynamicDependencies integration guide

Usage

// Load container from Maven coordinates
Container container = manager.builder("jdbc-connector", "com.example:jdbc-connector:1.0").create();

// Add driver based on runtime config
Artifact driver = new Artifact("org.postgresql", "postgresql", "jar", null, "42.5.0", "compile");
container.addDynamicDependency(driver);

// Classloader reloaded - driver classes now available via ServiceLoader

Isolation Guarantee

Different containers can load different versions of the same dependency without conflicts:

Container pg = manager.builder("pg", module).create();
Container mysql = manager.builder("mysql", module).create();

pg.addDynamicDependency(new Artifact("org.postgresql", "postgresql", "jar", null, "42.5.0", "compile"));
mysql.addDynamicDependency(new Artifact("com.mysql", "mysql-connector-j", "jar", null, "8.0.33", "compile"));

// Each container's ConfigurableClassLoader maintains its own dependencies

Loading Mechanisms

Containers resolve from multiple sources via existing ContainerManager.resolve():

• Maven GAV: groupId:artifactId:version
• Maven repository structure: groupId/artifactId/version/
• Flat lib/ folder: jarname.jar

SPI implementations and resources in dynamic dependencies are discoverable via standard classloader mechanisms after reload.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• artifacts-oss.talend.com
  • Triggering command: /usr/lib/jvm/temurin-17-jdk-amd64/bin/java /usr/lib/jvm/temurin-17-jdk-amd64/bin/java --enable-native-access=ALL-UNNAMED -classpath /usr/share/apache-maven-3.9.12/boot/plexus-classworlds-2.9.0.jar -Dclassworlds.conf=/usr/share/apache-maven-3.9.12/bin/m2.conf -Dmaven.home=/usr/share/apache-maven-3.9.12 -Dlibrary.jansi.path=/usr/share/apache-maven-3.9.12/lib/jansi-native -Dmaven.multiModuleProjectDirectory=/home/REDACTED/work/component-runtime/component-runtime/container/container-core org.codehaus.plexus.classworlds.launcher.Launcher clean compile -DskipTests (dns block)
  • Triggering command: /usr/lib/jvm/temurin-17-jdk-amd64/bin/java /usr/lib/jvm/temurin-17-jdk-amd64/bin/java -classpath /tmp/semmleTempDir14170739140737611935/apache-maven-3.8.8/boot/plexus-classworlds-2.6.0.jar -Dclassworlds.conf=/tmp/semmleTempDir14170739140737611935/apache-maven-3.8.8/bin/m2.conf -Dmaven.home=/tmp/semmleTempDir14170739140737611935/apache-maven-3.8.8 -Dlibrary.jansi.path=/tmp/semmleTempDir14170739140737611935/apache-maven-3.8.8/lib/jansi-native -Dmaven.multiModuleProjectDirectory=/home/REDACTED/work/component-runtime/component-runtime org.codehaus.plexus.classworlds.launcher.Launcher -f pom.xml -B -V -e -Dfindbugs.skip -Dcheckstyle.skip -Dpmd.skip=true -Dspotbugs.skip -Denforcer.skip -Dmaven.javadoc.skip -DskipTests (dns block)
• central.sonatype.com
  • Triggering command: /usr/lib/jvm/temurin-17-jdk-amd64/bin/java /usr/lib/jvm/temurin-17-jdk-amd64/bin/java --enable-native-access=ALL-UNNAMED -classpath /usr/share/apache-maven-3.9.12/boot/plexus-classworlds-2.9.0.jar -Dclassworlds.conf=/usr/share/apache-maven-3.9.12/bin/m2.conf -Dmaven.home=/usr/share/apache-maven-3.9.12 -Dlibrary.jansi.path=/usr/share/apache-maven-3.9.12/lib/jansi-native -Dmaven.multiModuleProjectDirectory=/home/REDACTED/work/component-runtime/component-runtime/container/container-core org.codehaus.plexus.classworlds.launcher.Launcher clean compile -DskipTests (dns block)
  • Triggering command: /usr/lib/jvm/temurin-17-jdk-amd64/bin/java /usr/lib/jvm/temurin-17-jdk-amd64/bin/java -classpath /tmp/semmleTempDir14170739140737611935/apache-maven-3.8.8/boot/plexus-classworlds-2.6.0.jar -Dclassworlds.conf=/tmp/semmleTempDir14170739140737611935/apache-maven-3.8.8/bin/m2.conf -Dmaven.home=/tmp/semmleTempDir14170739140737611935/apache-maven-3.8.8 -Dlibrary.jansi.path=/tmp/semmleTempDir14170739140737611935/apache-maven-3.8.8/lib/jansi-native -Dmaven.multiModuleProjectDirectory=/home/REDACTED/work/component-runtime/component-runtime org.codehaus.plexus.classworlds.launcher.Launcher -f pom.xml -B -V -e -Dfindbugs.skip -Dcheckstyle.skip -Dpmd.skip=true -Dspotbugs.skip -Denforcer.skip -Dmaven.javadoc.skip -DskipTests (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

Implement and/or improve the container loading mechanism so that TCK connectors (TCK containers) can be:

Discovered and loaded from:

• A Maven repository, using their Maven GAV (groupId, artifactId, version).
• The classpath, where all Java libraries and TCK bundles are placed in a single lib/ folder at the same directory level.

Isolated with a ConfigurableClassLoader:

-Each TCK container must have its own ConfigurableClassLoader.

• The classloader must provide isolation between containers, so that two different TCK containers can use the same dependency with different versions without conflicts.

Handle static vs dynamic dependencies:

• Static dependencies: All dependencies explicitly declared in the POM of the TCK connector must be loaded into the container’s ConfigurableClassLoader.
• Dynamic dependencies: Some TCK connectors provide a @DynamicDependency service that returns a list of Maven GAV coordinates based on their runtime configuration.
  • These dynamic dependencies must be resolved and then loaded into the same ConfigurableClassLoader of the specific TCK container that requires them (not globally shared).

Java SPI and resources:

• Connectors may use Java Service Provider Interfaces (SPI).
• SPI implementations that live in dynamic dependencies must be discoverable and correctly loaded by the container’s ConfigurableClassLoader.
  • This includes correctly handling META-INF/services/* lookups from both static and dynamic dependencies.
• Resources (e.g. files under META-INF/, configuration files, etc.) that reside in dynamic dependencies must be discoverable via the container’s classloader (e.g. getResource, getResources).

Requirements and expectations

• Design or adapt the ContainerManager so it can:
  • Discover/load TCK containers from both:
    • Maven coordinates (remote/local repositories).
    • A flat lib/ folder on the classpath (all jars in one directory).
  • For each container, create and manage its isolated ConfigurableClassLoader.
  • Load:
    • All static dependencies (from the connector’s POM).
    • All dynamic dependencies returned by the connector’s @DynamicDependency service.
• Ensure:
  • Class/resource lookup is correctly delegated so that:
    • Different containers do not interfere with each other’s dependency versions.
    • SPI implementations in dynamic dependencies are visible to the connector code.
    • Resources in dynamic dependencies are findable.
  • Prefer minimal, focused changes that integrate well with existing container and classloader infrastructure in this repo.
    • Add or update tests to cover:
    • Loading a container from Maven.
    • Loading a container from a lib/ folder classpath.
    • Using different versions of the same dependency in two containers.
    • Discovering SPI implementations and resources located in dynamic dependencies.

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[sonar-eks]

Quality Gate failed

• 0.00% Coverage on New Code (is less than 80.00%)
• 3 New Issues (is greater than 0)

Project ID: org.talend.sdk.component:component-runtime

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