Expand Up @@ -197,19 +197,41 @@ public ContainerRef rewrite(ContainerRef ref) { return ref; } // No rewrite possible if location and prefix are not set String registry = matchingConfig.get().location(); String location = matchingConfig.get().location(); String prefix = matchingConfig.get().prefix(); if (registry == null || registry.isBlank() || prefix == null || prefix.isBlank()) { if (location == null || location.isBlank() || prefix == null || prefix.isBlank()) { return ref; } String currentRefString = ref.toString(); String rewrittenRefString = currentRefString.replaceFirst(prefix, registry); String rewrittenRefString;
// Replace all subdomain if prefix starts with "*." (e.g., *.example.com → my-registry.com) if (prefix.startsWith("*.")) {
// The subdomain replacement can include an optional path int firtSlashIndex = prefix.indexOf('/'); String prefixPath = firtSlashIndex < 0 ? "" : prefix.substring(firtSlashIndex);
// Remove matched host + optional prefixPath String remainder = currentRefString.substring(ref.getRegistry().length()); if (!prefixPath.isEmpty() && remainder.startsWith(prefixPath)) { remainder = remainder.substring(prefixPath.length()); }
rewrittenRefString = location + remainder; }
// Just replace the prefix with the location (e.g., docker.io/library → my-registry.com/library) else { rewrittenRefString = location + currentRefString.substring(prefix.length()); }
LOG.debug( "Rewriting container reference from '{}' to '{}' using registry config with prefix '{}' and location '{}'", currentRefString, rewrittenRefString, prefix, registry); location); return ContainerRef.parse(rewrittenRefString); }
Expand Down Expand Up @@ -248,14 +270,25 @@ private boolean matches(ContainerRef ref, @Nullable String prefix) {
// No path restriction → host-only match if (p.path().isEmpty()) { LOG.debug("Found registry table '{}'", p); return true; }
// Path prefix match (namespace/repo) String refPath = String.join("/", ref.getNamespace()) + "/" + ref.getRepository(); return refPath.equals(p.path()) || refPath.startsWith(p.path() + "/"); boolean result = refPath.equals(p.path()) || refPath.startsWith(p.path() + "/"); if (result) { LOG.debug("Found registry table '{}' matching path '{}'", p, refPath); } return result; }
/** * Check if the given host matches the specified prefix host, which can be a specific hostname or a wildcard pattern (e.g., *.example.com). * @param host the host to check for a match against the prefix host, which is the host component of the prefix. * @param prefixHost the prefix host to match against, which can be a specific hostname or a wildcard pattern (e.g., *.example.com). * @return true if the host matches the prefix host, false otherwise. */ private boolean hostMatches(String host, String prefixHost) { if (prefixHost.startsWith("*.")) { String domain = prefixHost.substring(2); Expand Down