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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"docker-java-transport-zerodep fails to relocate org/publicsuffix/list/effective_tld_names.dat","articleBody":"## Problem\n\n`docker-java-transport-zerodep` shades `httpclient5` internally, relocating its classes from `org.apache.*` to `com.github.dockerjava.zerodep.shaded.org.apache.*`. However, the `org/publicsuffix/list/effective_tld_names.dat` resource bundled by httpclient5 is **not relocated** — it remains at its original path inside zerodep's jar.\n\nWhen a project depends on both `docker-java-transport-zerodep` and `httpclient5` directly (e.g. via WireMock, Spring's RestClient, etc.), two copies of `effective_tld_names.dat` land on the classpath at the same path. Maven's `duplicate-finder-maven-plugin` fails the build. This failure is normally not a problem, but it can become one.\n\nSince, `PublicSuffixMatcherLoader` (already shaded to `com.github.dockerjava.zerodep.shaded.org.apache.hc.client5.http.psl.PublicSuffixMatcherLoader`) contains the hardcoded absolute resource path `/org/publicsuffix/list/effective_tld_names.dat` in its bytecode, it was not updated by the shade plugin's string relocation because the path uses slash notation with a leading `/`, not dot notation.\n\n## Fix\n\nAdd two relocation entries to the shade plugin config in `docker-java-transport-zerodep/pom.xml`:\n\n```xml\n\u003c!-- Relocates the resource file itself --\u003e\n\u003crelocation\u003e\n    \u003cpattern\u003eorg.publicsuffix\u003c/pattern\u003e\n    \u003cshadedPattern\u003ecom.github.dockerjava.zerodep.shaded.org.publicsuffix\u003c/shadedPattern\u003e\n\u003c/relocation\u003e\n\u003c!-- Fixes the absolute-path string literal in PublicSuffixMatcherLoader bytecode --\u003e\n\u003crelocation\u003e\n    \u003crawString\u003etrue\u003c/rawString\u003e\n    \u003cpattern\u003e/org/publicsuffix\u003c/pattern\u003e\n    \u003cshadedPattern\u003e/com/github/dockerjava/zerodep/shaded/org/publicsuffix\u003c/shadedPattern\u003e\n\u003c/relocation\u003e\n```\n\nThis moves the dat file to `com/github/dockerjava/zerodep/shaded/org/publicsuffix/list/effective_tld_names.dat` inside the jar and updates the `getResource()` call in the shaded bytecode to match — zerodep remains fully self-contained.\n","author":{"url":"https://github.com/JKomoroski","@type":"Person","name":"JKomoroski"},"datePublished":"2026-05-12T15:38:18.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":5},"url":"https://github.com/2625/docker-java/issues/2625"}