Example usage for org.apache.zookeeper KeeperException code

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Usage

From source file:fr.eurecom.hybris.mds.ZkRmds.java

License:Apache License

public void markOrphanKey(final String key, final Timestamp ts, final List<Kvs> savedReplicas) {
    new Thread(new Runnable() {
        public void run() {
            // create ZNode <root>-gc/orphans/<KvsKey>
            String path = gcOrphansDir + "/" + Utils.getKvsKey(key, ts);
            byte[] value = new Metadata(ts, null, 0, savedReplicas, null).serialize();
            try {
                ZkRmds.this.zkCli.create().forPath(path, value);
                logger.debug("GcMarker: marked {} as orphan", path);
            } catch (KeeperException e) {
                if (e.code() != KeeperException.Code.NODEEXISTS)
                    logger.warn("GcMarker: could not create orphan node " + path, e);
            } catch (Exception e) {
                logger.warn("GcMarker: could not create orphan node " + path, e);
            }//from ww w .  j  a  va2 s  .c o  m
        }
    }).start();
}

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From source file:fr.eurecom.hybris.mds.ZkRmds.java

License:Apache License

public void removeOrphanKeys(Set<String> orphanKeys) {

    for (String key : orphanKeys) {
        String znodePath = this.gcOrphansDir + "/" + key;
        try {//from  w w  w .  ja va 2 s.  c  om
            this.zkCli.delete().forPath(znodePath);
        } catch (KeeperException e) {
            if (e.code() != KeeperException.Code.NONODE)
                logger.warn("Could not delete orphan ZNode " + znodePath, e);
        } catch (Exception e) {
            logger.warn("Could not delete orphan ZNode " + znodePath, e);
        }
    }
}

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From source file:fr.eurecom.hybris.mds.ZkRmds.java

License:Apache License

public void removeStaleKey(String staleKey) {

    String znodePath = this.gcStaleDir + "/" + staleKey;
    try {/*from  w  w w  .j a v  a2 s .  c o  m*/
        this.zkCli.delete().forPath(znodePath);
    } catch (KeeperException e) {
        if (e.code() != KeeperException.Code.NONODE)
            logger.warn("Could not delete orphan ZNode " + znodePath, e);
    } catch (Exception e) {
        logger.warn("Could not delete orphan ZNode " + znodePath, e);
    }
}

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From source file:fr.eurecom.hybris.test.mds.ConsulRmdsTest.java

License:Apache License

@Ignore
@Test//from w w  w .  j  a  v  a  2 s . c o  m
public void testTransactionalWrite() {

    LinkedHashMap<String, Metadata> map = new LinkedHashMap<String, Metadata>();
    LinkedHashMap<String, Stat> statMap = new LinkedHashMap<String, Stat>();
    int numKeys = 5, i = 0;
    byte[] hash = new byte[Utils.HASH_LENGTH];
    this.random.nextBytes(hash);
    List<Kvs> replicas = new ArrayList<Kvs>();
    replicas.add(new TransientKvs("transient", "d", true, 20));
    Metadata retrieved;
    for (i = 0; i < numKeys; i++) {
        String key = this.TEST_KEY_PREFIX + new BigInteger(50, this.random).toString(32);
        map.put(key, new Metadata(new Timestamp(this.random.nextInt(10), "qwe"), hash, 2, replicas, null));
        Stat st = new Stat();
        st.setVersion(-1);
        statMap.put(key, st);
    }

    // successful transactional write creating znodes
    try {
        mds.tsMultiWrite(map, statMap);
        for (Entry<String, Metadata> entry : map.entrySet()) {
            retrieved = mds.tsRead(entry.getKey(), new Stat());
            assertEquals(entry.getValue(), retrieved);
        }
    } catch (HybrisException e) {
        fail(e.getMessage());
    }

    // fails for mismatching versions of all the keys
    try {
        mds.tsMultiWrite(map, statMap);
        fail();
    } catch (HybrisException e) {
        KeeperException ke = (KeeperException) e.getCause();
        assertEquals(KeeperException.Code.NODEEXISTS, ke.code());
    }

    // successful transactional write modifying all znodes
    for (Entry<String, Stat> entry : statMap.entrySet())
        entry.getValue().setVersion(entry.getValue().getVersion() + 1);
    try {
        for (Entry<String, Metadata> entry : map.entrySet())
            map.put(entry.getKey(),
                    new Metadata(new Timestamp(this.random.nextInt(10), "NEW"), hash, 10, replicas, null));
        mds.tsMultiWrite(map, statMap);
        for (Entry<String, Metadata> entry : map.entrySet()) {
            retrieved = mds.tsRead(entry.getKey(), new Stat());
            assertEquals(entry.getValue(), retrieved);
        }
    } catch (HybrisException e) {
        fail(e.getMessage());
    }

    // successful transactional write with mix of modify and create nodes
    for (Entry<String, Stat> entry : statMap.entrySet())
        entry.getValue().setVersion(entry.getValue().getVersion() + 1);
    int numNewKeys = 3;
    for (i = 0; i < numNewKeys; i++) {
        String key = this.TEST_KEY_PREFIX + new BigInteger(50, this.random).toString(32);
        map.put(key, new Metadata(new Timestamp(this.random.nextInt(10), "qwe"), hash, 2, replicas, null));
        Stat st = new Stat();
        st.setVersion(-1);
        statMap.put(key, st);
    }
    try {
        mds.tsMultiWrite(map, statMap);
        for (Entry<String, Metadata> entry : map.entrySet()) {
            retrieved = mds.tsRead(entry.getKey(), new Stat());
            assertEquals(entry.getValue(), retrieved);
        }
    } catch (HybrisException e) {
        fail(e.getMessage());
    }

    // fails for mismatching version of one key
    for (Entry<String, Stat> entry : statMap.entrySet()) {
        if (this.random.nextInt(10) > 5)
            entry.getValue().setVersion(entry.getValue().getVersion() + 1);
        else
            entry.getValue().setVersion(123);
    }
    try {
        mds.tsMultiWrite(map, statMap);
        fail();
    } catch (HybrisException e) {
        KeeperException ke = (KeeperException) e.getCause();
        assertEquals(KeeperException.Code.BADVERSION, ke.code());
    }
}

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From source file:fr.eurecom.hybris.test.mds.MdsManagerTest.java

License:Apache License

@Test
public void testDeleteNotExistingKey() {

    String key = this.TEST_KEY_PREFIX + new BigInteger(50, this.random).toString(32);
    try {/*from   www . java  2 s .c o  m*/
        Timestamp ts1 = new Timestamp(1, "BBBB");
        Timestamp ts2 = new Timestamp(1, "AAAA");
        Timestamp ts3 = new Timestamp(1, "CCCC");

        mds.delete(key, Metadata.getTombstone(ts1), -1); // writes the tombstone no matter which znode version
        mds.delete(key, Metadata.getTombstone(ts2), 5); // finds a smaller znode version, retries (because ts is greater) and eventually succeeds
        mds.delete(key, Metadata.getTombstone(ts3), 5); // finds a smaller znode version, silently fails

        Stat stat = new Stat();
        Metadata md = mds.tsRead(key, stat);
        assertNotNull(md);
        assertEquals(md.getTs(), ts2);
        assertNull(md.getChunksLst());
        assertNull(md.getHash());
        assertEquals(0, md.getSize());
        assertTrue(md.isTombstone());
    } catch (HybrisException e) {
        e.printStackTrace();
        fail();
    }

    key = this.TEST_KEY_PREFIX + new BigInteger(50, this.random).toString(32);
    try {
        mds.delete(key, Metadata.getTombstone(new Timestamp(1, "QWERTY")), 7); // writes the tombstone anyway
        fail();
    } catch (HybrisException e) {
        KeeperException ke = (KeeperException) e.getCause();
        assertEquals(KeeperException.Code.NONODE, ke.code());
    }
}

---

From source file:fr.eurecom.hybris.test.mds.ZkRmdsTest.java

License:Apache License

@Test
public void testTransactionalWrite() {

    LinkedHashMap<String, Metadata> map = new LinkedHashMap<String, Metadata>();
    LinkedHashMap<String, Stat> statMap = new LinkedHashMap<String, Stat>();
    int numKeys = 5, i = 0;
    byte[] hash = new byte[Utils.HASH_LENGTH];
    this.random.nextBytes(hash);
    List<Kvs> replicas = new ArrayList<Kvs>();
    replicas.add(new TransientKvs("transient", "d", true, 20));
    Metadata retrieved;//  www .j  av  a2 s . c om
    for (i = 0; i < numKeys; i++) {
        String key = this.TEST_KEY_PREFIX + new BigInteger(50, this.random).toString(32);
        map.put(key, new Metadata(new Timestamp(this.random.nextInt(10), "qwe"), hash, 2, replicas, null));
        Stat st = new Stat();
        st.setVersion(-1);
        statMap.put(key, st);
    }

    // successful transactional write creating znodes
    try {
        mds.tsMultiWrite(map, statMap);
        for (Entry<String, Metadata> entry : map.entrySet()) {
            retrieved = mds.tsRead(entry.getKey(), new Stat());
            assertEquals(entry.getValue(), retrieved);
        }
    } catch (HybrisException e) {
        fail(e.getMessage());
    }

    // fails for mismatching versions of all the keys
    try {
        mds.tsMultiWrite(map, statMap);
        fail();
    } catch (HybrisException e) {
        KeeperException ke = (KeeperException) e.getCause();
        assertEquals(KeeperException.Code.NODEEXISTS, ke.code());
    }

    // successful transactional write modifying all znodes
    for (Entry<String, Stat> entry : statMap.entrySet())
        entry.getValue().setVersion(entry.getValue().getVersion() + 1);
    try {
        for (Entry<String, Metadata> entry : map.entrySet())
            map.put(entry.getKey(),
                    new Metadata(new Timestamp(this.random.nextInt(10), "NEW"), hash, 10, replicas, null));
        mds.tsMultiWrite(map, statMap);
        for (Entry<String, Metadata> entry : map.entrySet()) {
            retrieved = mds.tsRead(entry.getKey(), new Stat());
            assertEquals(entry.getValue(), retrieved);
        }
    } catch (HybrisException e) {
        fail(e.getMessage());
    }

    // successful transactional write with mix of modify and create nodes
    for (Entry<String, Stat> entry : statMap.entrySet())
        entry.getValue().setVersion(entry.getValue().getVersion() + 1);
    int numNewKeys = 3;
    for (i = 0; i < numNewKeys; i++) {
        String key = this.TEST_KEY_PREFIX + new BigInteger(50, this.random).toString(32);
        map.put(key, new Metadata(new Timestamp(this.random.nextInt(10), "qwe"), hash, 2, replicas, null));
        Stat st = new Stat();
        st.setVersion(-1);
        statMap.put(key, st);
    }
    try {
        mds.tsMultiWrite(map, statMap);
        for (Entry<String, Metadata> entry : map.entrySet()) {
            retrieved = mds.tsRead(entry.getKey(), new Stat());
            assertEquals(entry.getValue(), retrieved);
        }
    } catch (HybrisException e) {
        fail(e.getMessage());
    }

    // fails for mismatching version of one key
    for (Entry<String, Stat> entry : statMap.entrySet()) {
        if (this.random.nextInt(10) > 5)
            entry.getValue().setVersion(entry.getValue().getVersion() + 1);
        else
            entry.getValue().setVersion(123);
    }
    try {
        mds.tsMultiWrite(map, statMap);
        fail();
    } catch (HybrisException e) {
        KeeperException ke = (KeeperException) e.getCause();
        assertEquals(KeeperException.Code.BADVERSION, ke.code());
    }
}

---

From source file:fr.eurecom.hybris.test.mds.ZkRmdsTest.java

License:Apache License

@Test
public void testDeleteNotExistingKey() {

    String key = this.TEST_KEY_PREFIX + new BigInteger(50, this.random).toString(32);
    try {//from   ww w  .j  a v a2 s.  co  m
        Timestamp ts1 = new Timestamp(1, "BBBB");
        Timestamp ts2 = new Timestamp(1, "AAAA");
        Timestamp ts3 = new Timestamp(1, "CCCC");

        mds.delete(key, Metadata.getTombstone(ts1), -1); // writes the tombstone no matter which znode version
        mds.delete(key, Metadata.getTombstone(ts2), 5); // finds a smaller znode version, retries (because ts is greater) and eventually succeeds
        mds.delete(key, Metadata.getTombstone(ts3), 5); // finds a smaller znode version, silently fails

        Stat stat = new Stat();
        Metadata md = mds.tsRead(key, stat);
        assertNotNull(md);
        assertEquals(md.getTs(), ts2);
        assertNull(md.getReplicasLst());
        assertNull(md.getHash());
        assertEquals(0, md.getSize());
        assertTrue(md.isTombstone());
    } catch (HybrisException e) {
        e.printStackTrace();
        fail();
    }

    key = this.TEST_KEY_PREFIX + new BigInteger(50, this.random).toString(32);
    try {
        mds.delete(key, Metadata.getTombstone(new Timestamp(1, "QWERTY")), 7); // writes the tombstone anyway
        fail();
    } catch (HybrisException e) {
        KeeperException ke = (KeeperException) e.getCause();
        assertEquals(KeeperException.Code.NONODE, ke.code());
    }
}

---

From source file:hws.util.ZkDataMonitor.java

License:Apache License

public void deleteAll(String path) throws KeeperException, InterruptedException {
    List<String> children = null;
    try {//from  w w w.  j a va 2  s .  com
        children = this.zk.getChildren(path, false);
    } catch (KeeperException e) {
        if (e.code() != KeeperException.Code.NONODE) {
            throw e;
        }
    }
    if (children != null) {
        for (String child : children) {
            deleteAll((new File(path)).getPath() + "/" + child);
        }
    }
    this.zk.delete(path, -1);
}

---

From source file:io.fabric8.groups.internal.ZooKeeperGroup.java

License:Apache License

void getDataAndStat(final String fullPath) throws Exception {
    Stat stat = new Stat();
    byte[] data = client.getData().storingStatIn(stat).usingWatcher(dataWatcher).forPath(fullPath);
    applyNewData(fullPath, KeeperException.Code.OK.intValue(), stat, data);
}

---

From source file:io.fabric8.groups.internal.ZooKeeperGroup.java

License:Apache License

private void applyNewData(String fullPath, int resultCode, Stat stat, byte[] bytes) {
    if (resultCode == KeeperException.Code.OK.intValue()) {
        // otherwise - node must have dropped or something - we should be getting another event
        ChildData<T> data = new ChildData<T>(fullPath, stat, bytes, decode(bytes));
        ChildData<T> previousData = currentData.put(fullPath, data);
        if (previousData == null || previousData.getStat().getVersion() != stat.getVersion()) {
            offerOperation(new EventOperation(this, GroupListener.GroupEvent.CHANGED));
        }/*w ww.j a v a 2  s.  c  o m*/
    }
}

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