Package org.apache.zookeeper.AsyncCallback

Examples of org.apache.zookeeper.AsyncCallback.StringCallback

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                                            .getChildren());
                                } else {
                                    cb.processResult(rc, path, p.ctx, null);
                                }
                            } else if (p.response instanceof CreateResponse) {
                                StringCallback cb = (StringCallback) p.cb;
                                CreateResponse rsp = (CreateResponse) p.response;
                                if (rc == 0) {
                                    cb.processResult(rc, path, p.ctx, rsp
                                            .getPath());
                                } else {
                                    cb.processResult(rc, path, p.ctx, null);
                                }
                            } else if (p.cb instanceof VoidCallback) {
                                VoidCallback cb = (VoidCallback) p.cb;
                                cb.processResult(rc, path, p.ctx);
                            }
                        }
                    } catch (Throwable t) {
                        LOG.error("Caught unexpected throwable", t);
                    }
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    }

    @Override
    public void createLedger(final LedgerMetadata metadata, final GenericCallback<Long> ledgerCb) {
        ZkUtils.createFullPathOptimistic(zk, idGenPath, new byte[0], Ids.OPEN_ACL_UNSAFE,
            CreateMode.EPHEMERAL_SEQUENTIAL, new StringCallback() {
            @Override
            public void processResult(int rc, String path, Object ctx, final String idPathName) {
                if (rc != KeeperException.Code.OK.intValue()) {
                    LOG.error("Could not generate new ledger id",
                              KeeperException.create(KeeperException.Code.get(rc), path));
                    ledgerCb.operationComplete(rc, null);
                    return;
                }
                /*
                 * Extract ledger id from gen path
                 */
                long ledgerId;
                try {
                    ledgerId = getLedgerIdFromGenPath(idPathName);
                } catch (IOException e) {
                    LOG.error("Could not extract ledger-id from id gen path:" + path, e);
                    ledgerCb.operationComplete(KeeperException.Code.SYSTEMERROR.intValue(), null);
                    return;
                }
                String ledgerPath = getLedgerPath(ledgerId);
                final long lid = ledgerId;
                StringCallback scb = new StringCallback() {
                    @Override
                    public void processResult(int rc, String path,
                            Object ctx, String name) {
                        if (rc != KeeperException.Code.OK.intValue()) {
                            LOG.error("Could not create node for ledger",
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                                            .getChildren());
                                } else {
                                    cb.processResult(rc, path, p.ctx, null);
                                }
                            } else if (p.response instanceof CreateResponse) {
                                StringCallback cb = (StringCallback) p.cb;
                                CreateResponse rsp = (CreateResponse) p.response;
                                if (rc == 0) {
                                    cb.processResult(rc, path, p.ctx, rsp
                                            .getPath());
                                } else {
                                    cb.processResult(rc, path, p.ctx, null);
                                }
                            } else if (p.cb instanceof VoidCallback) {
                                VoidCallback cb = (VoidCallback) p.cb;
                                cb.processResult(rc, path, p.ctx);
                            }
                        }
                    } catch (Throwable t) {
                        LOG.error("Caught unexpected throwable", t);
                    }
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    public static void createFullPathOptimistic(
        final ZooKeeper zk, final String originalPath, final byte[] data,
        final List<ACL> acl, final CreateMode createMode,
        final AsyncCallback.StringCallback callback, final Object ctx) {

        zk.create(originalPath, data, acl, createMode, new StringCallback() {
            @Override
            public void processResult(int rc, String path, Object ctx, String name) {

                if (rc != Code.NONODE.intValue()) {
                    callback.processResult(rc, path, ctx, name);
                    return;
                }

                // Since I got a nonode, it means that my parents don't exist
                // create mode is persistent since ephemeral nodes can't be
                // parents
                createFullPathOptimistic(zk, new File(originalPath).getParent().replace("\\", "/"), new byte[0], acl,
                        CreateMode.PERSISTENT, new StringCallback() {

                            @Override
                            public void processResult(int rc, String path, Object ctx, String name) {
                                if (rc == Code.OK.intValue() || rc == Code.NODEEXISTS.intValue()) {
                                    // succeeded in creating the parent, now
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    }

    @Override
    public void newLedgerPath(final GenericCallback<String> ledgerCb) {
        ZkUtils.createFullPathOptimistic(zk, idGenPath, new byte[0], Ids.OPEN_ACL_UNSAFE,
            CreateMode.EPHEMERAL_SEQUENTIAL, new StringCallback() {
            @Override
            public void processResult(int rc, String path, Object ctx, final String idPathName) {
                if (rc != KeeperException.Code.OK.intValue()) {
                    LOG.error("Could not generate new ledger id",
                              KeeperException.create(KeeperException.Code.get(rc), path));
                    ledgerCb.operationComplete(rc, null);
                    return;
                }
                /*
                 * Extract ledger id from gen path
                 */
                long ledgerId;
                try {
                    ledgerId = getLedgerIdFromGenPath(idPathName);
                } catch (IOException e) {
                    LOG.error("Could not extract ledger-id from id gen path:" + path, e);
                    ledgerCb.operationComplete(KeeperException.Code.SYSTEMERROR.intValue(), null);
                    return;
                }
                StringCallback scb = new StringCallback() {
                    @Override
                    public void processResult(int rc, String path,
                            Object ctx, String name) {
                        if (rc != KeeperException.Code.OK.intValue()) {
                            ledgerCb.operationComplete(rc, null);
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        activeLedgers = new ConcurrentHashMap<Long, Boolean>();
    }

    @Override
    public void newLedgerPath(final GenericCallback<String> cb) {
        StringCallback scb = new StringCallback() {
            @Override
            public void processResult(int rc, String path, Object ctx,
                    String name) {
                if (Code.OK.intValue() != rc) {
                    cb.operationComplete(rc, null);
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                                  .getChildren(), rsp.getStat());
                      } else {
                          cb.processResult(rc, clientPath, p.ctx, null, null);
                      }
                  } else if (p.response instanceof CreateResponse) {
                      StringCallback cb = (StringCallback) p.cb;
                      CreateResponse rsp = (CreateResponse) p.response;
                      if (rc == 0) {
                          cb.processResult(rc, clientPath, p.ctx,
                                  (chrootPath == null
                                          ? rsp.getPath()
                                          : rsp.getPath()
                                    .substring(chrootPath.length())));
                      } else {
                          cb.processResult(rc, clientPath, p.ctx, null);
                      }
                  } else if (p.cb instanceof VoidCallback) {
                      VoidCallback cb = (VoidCallback) p.cb;
                      cb.processResult(rc, clientPath, p.ctx);
                  }
              }
          } catch (Throwable t) {
              LOG.error("Caught unexpected throwable", t);
          }
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                                  .getChildren(), rsp.getStat());
                      } else {
                          cb.processResult(rc, clientPath, p.ctx, null, null);
                      }
                  } else if (p.response instanceof CreateResponse) {
                      StringCallback cb = (StringCallback) p.cb;
                      CreateResponse rsp = (CreateResponse) p.response;
                      if (rc == 0) {
                          cb.processResult(rc, clientPath, p.ctx,
                                  (chrootPath == null
                                          ? rsp.getPath()
                                          : rsp.getPath()
                                    .substring(chrootPath.length())));
                      } else {
                          cb.processResult(rc, clientPath, p.ctx, null);
                      }
                  } else if (p.cb instanceof VoidCallback) {
                      VoidCallback cb = (VoidCallback) p.cb;
                      cb.processResult(rc, clientPath, p.ctx);
                  }
              }
          } catch (Throwable t) {
              LOG.error("Caught unexpected throwable", t);
          }
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    final String zkAvailablePath = conf.get(BKJM_ZK_LEDGERS_AVAILABLE_PATH,
        BKJM_ZK_LEDGERS_AVAILABLE_PATH_DEFAULT);
    final CountDownLatch zkPathLatch = new CountDownLatch(1);

    final AtomicBoolean success = new AtomicBoolean(false);
    StringCallback callback = new StringCallback() {
      @Override
      public void processResult(int rc, String path, Object ctx, String name) {
        if (KeeperException.Code.OK.intValue() == rc
            || KeeperException.Code.NODEEXISTS.intValue() == rc) {
          LOG.info("Successfully created bookie available path : "
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    // create bookie available path in zookeeper if it doesn't exists
    final String zkAvailablePath = conf.get(BKJM_ZK_LEDGERS_AVAILABLE_PATH,
        BKJM_ZK_LEDGERS_AVAILABLE_PATH_DEFAULT);
    final CountDownLatch zkPathLatch = new CountDownLatch(1);

    StringCallback callback = new StringCallback() {
      @Override
      public void processResult(int rc, String path, Object ctx, String name) {
        if (KeeperException.Code.OK.intValue() == rc
            || KeeperException.Code.NODEEXISTS.intValue() == rc) {
          LOG.info("Successfully created bookie available path : "
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Related Classes of org.apache.zookeeper.AsyncCallback.StringCallback

  • org.apache.bookkeeper.meta.FlatLedgerManager
  • org.apache.bookkeeper.meta.HierarchicalLedgerManager
  • org.apache.bookkeeper.meta.MSLedgerManagerFactory$MsLedgerManager
  • org.apache.bookkeeper.util.ZkUtils
  • org.apache.hadoop.contrib.bkjournal.BookKeeperJournalManager
  • org.apache.zookeeper.ClientCnxn$EventThread
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