Source:
protected void run(BookKeeper bk, Flags flags) throws Exception { BookKeeperAdmin admin = new BookKeeperAdmin((org.apache.bookkeeper.client.BookKeeper) bk); LedgerManager ledgerManager = ((org.apache.bookkeeper.client.BookKeeper) bk).getLedgerManager(); long i = 0; BookieSocketAddress fromAddr = new BookieSocketAddress(flags.from); BookieSocketAddress toAddr = new BookieSocketAddress(flags.to); System.out.println(String.format("Replacing bookie id %s with %s in metadata", fromAddr, toAddr)); RateLimiter limiter = RateLimiter.create(flags.rate); for (Long lid : admin.listLedgers()) { Versioned<LedgerMetadata> md = ledgerManager.readLedgerMetadata(lid).get(); if (md.getValue().getAllEnsembles().entrySet().stream().anyMatch(e -> e.getValue().contains(fromAddr))) { limiter.acquire(); LedgerMetadataBuilder builder = LedgerMetadataBuilder.from(md.getValue()); md.getValue().getAllEnsembles().entrySet().stream() .filter(e -> e.getValue().contains(fromAddr)) .forEach(e -> { List<BookieSocketAddress> ensemble = new ArrayList<>(e.getValue()); ensemble.replaceAll((a) -> { if (a.equals(fromAddr)) { return toAddr; } else { return a; } }); builder.replaceEnsembleEntry(e.getKey(), ensemble); }); LedgerMetadata newMeta = builder.build(); if (flags.verbose) { System.out.println("Replacing ledger " + lid + " metadata ..."); System.out.println(md.getValue().toString()); System.out.println("with ..."); System.out.println(newMeta.toString()); } i++; if (!flags.dryRun) { ledgerManager.writeLedgerMetadata(lid, newMeta, md.getVersion()).get(); } } if (i >= flags.max) { System.out.println("Max number of ledgers processed, exiting"); break; } } System.out.println("Replaced bookie ID in " + i + " ledgers"); }

Target:
protected void run(BookKeeper bk, Flags flags) throws Exception { try (BookKeeperAdmin admin = new BookKeeperAdmin((org.apache.bookkeeper.client.BookKeeper) bk)) { LedgerManager ledgerManager = ((org.apache.bookkeeper.client.BookKeeper) bk).getLedgerManager(); long i = 0; BookieSocketAddress fromAddr = new BookieSocketAddress(flags.from); BookieSocketAddress toAddr = new BookieSocketAddress(flags.to); System.out.println(String.format("Replacing bookie id %s with %s in metadata", fromAddr, toAddr)); RateLimiter limiter = RateLimiter.create(flags.rate); for (Long lid : admin.listLedgers()) { Versioned<LedgerMetadata> md = ledgerManager.readLedgerMetadata(lid).get(); if (md.getValue().getAllEnsembles().entrySet() .stream().anyMatch(e -> e.getValue().contains(fromAddr))) { limiter.acquire(); LedgerMetadataBuilder builder = LedgerMetadataBuilder.from(md.getValue()); md.getValue().getAllEnsembles().entrySet().stream() .filter(e -> e.getValue().contains(fromAddr)) .forEach(e -> { List<BookieSocketAddress> ensemble = new ArrayList<>(e.getValue()); ensemble.replaceAll((a) -> { if (a.equals(fromAddr)) { return toAddr; } else { return a; } }); builder.replaceEnsembleEntry(e.getKey(), ensemble); }); LedgerMetadata newMeta = builder.build(); if (flags.verbose) { System.out.println("Replacing ledger " + lid + " metadata ..."); System.out.println(md.getValue().toSafeString()); System.out.println("with ..."); System.out.println(newMeta.toSafeString()); } i++; if (!flags.dryRun) { ledgerManager.writeLedgerMetadata(lid, newMeta, md.getVersion()).get(); } } if (i >= flags.max) { System.out.println("Max number of ledgers processed, exiting"); break; } } System.out.println("Replaced bookie ID in " + i + " ledgers"); } }